diff --git a/docutranslate/agents/agent.py b/docutranslate/agents/agent.py
index de466f1..c9bd261 100644
--- a/docutranslate/agents/agent.py
+++ b/docutranslate/agents/agent.py
@@ -42,10 +42,10 @@ class PartialAgentResultError(ValueError):
 class AgentConfig:
     logger: logging.Logger
     base_url: str
-    api_key: str
+    api_key: str | None = None
     model_id: str
     temperature: float = 0.7
-    max_concurrent: int = 30
+    concurrent: int = 30
     timeout: int = 2000
     thinking: ThinkingMode = "default"
 
@@ -114,11 +114,11 @@ class Agent:
         if self.baseurl.endswith("/"):
             self.baseurl = self.baseurl[:-1]
         self.domain = urlparse(self.baseurl).netloc
-        self.key = config.api_key.strip() or "xx"
+        self.key = config.api_key.strip() if config.api_key else "xx"
         self.model_id = config.model_id.strip()
         self.system_prompt = ""
         self.temperature = config.temperature
-        self.max_concurrent = config.max_concurrent
+        self.max_concurrent = config.concurrent
         self.timeout = config.timeout
         self.thinking = config.thinking
         self.logger = config.logger or global_logger
@@ -437,4 +437,4 @@ class Agent:
 
 
 if __name__ == '__main__':
-    pass
\ No newline at end of file
+    pass
diff --git a/docutranslate/app.py b/docutranslate/app.py
index 0ed3df6..d792cd7 100644
--- a/docutranslate/app.py
+++ b/docutranslate/app.py
@@ -233,7 +233,7 @@ class GlossaryAgentConfigPayload(BaseModel):
     model_id: str = Field(..., description="用于术语表生成的Agent的模型ID。", examples=["gpt-4-turbo"])
     to_lang: str = Field(..., description="术语表生成的目标语言。", examples=["简体中文", "English"])
     temperature: float = Field(default=0.7, description="用于术语表生成的Agent的温度参数。")
-    max_concurrent: int = Field(default=30, description="Agent的最大并发请求数。")
+    concurrent: int = Field(default=30, description="Agent的最大并发请求数。")
     timeout: int = Field(default=2000, description="Agent的API调用超时时间。")
     thinking: ThinkingMode = Field(default="default", description="Agent的思考模式。")
 
@@ -243,7 +243,7 @@ class BaseWorkflowParams(BaseModel):
     skip_translate: bool = Field(default=False, description="是否跳过翻译步骤。如果为True，则仅执行文档解析和格式转换。")
     base_url: Optional[str] = Field(default=None, validation_alias=AliasChoices('base_url', 'baseurl'), description="LLM API的基础URL。当 `skip_translate` 为 `False` 时必填。",
                                     examples=["https://api.openai.com/v1"])
-    api_key: Optional[str] = Field(default=None, validation_alias=AliasChoices('api_key', 'key'), description="LLM API的密钥。当 `skip_translate` 为 `False` 时必填。",
+    api_key: Optional[str] = Field(default=None, validation_alias=AliasChoices('api_key', 'key'), description="LLM API的密钥（可选）。",
                                    examples=["sk-xxxxxxxxxxxxxxxxxxxxxxxxxxxx"])
     model_id: Optional[str] = Field(default=None, description="要使用的LLM模型ID。当 `skip_translate` 为 `False` 时必填。",
                                     examples=["gpt-4o"])
@@ -251,6 +251,7 @@ class BaseWorkflowParams(BaseModel):
     chunk_size: int = Field(default=default_params["chunk_size"], description="文本分割的块大小（字符）。")
     concurrent: int = Field(default=default_params["concurrent"], description="并发请求数。")
     temperature: float = Field(default=default_params["temperature"], description="LLM温度参数。")
+    timeout: int = Field(default=2000, description="API调用超时时间（毫秒）。")
     thinking: ThinkingMode = Field(default=default_params["thinking"], description="Agent的思考模式。",
                                    examples=["default", "enable", "disable"])
     custom_prompt: Optional[str] = Field(None, description="用户自定义的翻译Prompt。", alias="custom_prompt")
@@ -267,8 +268,6 @@ class BaseWorkflowParams(BaseModel):
             # Check for standard keys or their aliases
             if not (values.get('base_url') or values.get('baseurl')):
                 raise ValueError("当 `skip_translate` 为 `False` 时, `base_url` 或 `baseurl` 字段是必须的。")
-            if not (values.get('api_key') or values.get('key')):
-                raise ValueError("当 `skip_translate` 为 `False` 时, `api_key` 或 `key` 字段是必须的。")
             if not values.get('model_id'):
                 raise ValueError("当 `skip_translate` 为 `False` 时, `model_id` 字段是必须的。")
         # 如果跳过翻译，则不进行任何检查，允许 base_url 等字段为空
@@ -417,6 +416,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                         "glossary_generate_enable": False,
                         "convert_engine": "mineru",
@@ -438,6 +438,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                         "glossary_generate_enable": False,
                         "json_paths": ["$.product.name", "$.product.description", "$.features[*]"],
@@ -456,6 +457,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                         "glossary_generate_enable": False,
                         "insert_mode": "replace",
@@ -483,7 +485,7 @@ class TranslateServiceRequest(BaseModel):
                             "model_id": "gpt-4-turbo",
                             "to_lang": "中文",
                             "temperature": 0.7,
-                            "max_concurrent": 30,
+                            "concurrent": 30,
                             "timeout": 2000,
                             "thinking": "default"
                         }
@@ -504,6 +506,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                     }
                 },
@@ -522,6 +525,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                     }
                 },
@@ -540,6 +544,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                     }
                 },
@@ -558,6 +563,7 @@ class TranslateServiceRequest(BaseModel):
                         "chunk_size": default_params["chunk_size"],
                         "concurrent": default_params["concurrent"],
                         "temperature": default_params["temperature"],
+                        "timeout": 2000,
                         "thinking": "default",
                     }
                 }
@@ -612,7 +618,7 @@ async def _perform_translation(
             task_logger.info("构建 MarkdownBasedWorkflow 配置。")
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
-                'temperature', 'thinking', 'chunk_size', 'concurrent', 'glossary_dict'
+                'temperature', 'thinking', 'chunk_size', 'concurrent', 'glossary_dict', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -639,7 +645,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent', 'glossary_dict',
-                'insert_mode', 'separator'
+                'insert_mode', 'separator', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -657,7 +663,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent', 'glossary_dict',
-                'json_paths'
+                'json_paths', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -675,7 +681,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent',
-                'insert_mode', 'separator', 'translate_regions', 'glossary_dict'
+                'insert_mode', 'separator', 'translate_regions', 'glossary_dict', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -694,7 +700,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent',
-                'insert_mode', 'separator', 'glossary_dict'
+                'insert_mode', 'separator', 'glossary_dict', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -713,7 +719,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent',
-                'insert_mode', 'separator', 'glossary_dict'
+                'insert_mode', 'separator', 'glossary_dict', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -732,7 +738,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent',
-                'insert_mode', 'separator', 'glossary_dict'
+                'insert_mode', 'separator', 'glossary_dict', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
@@ -752,7 +758,7 @@ async def _perform_translation(
             translator_args = payload.model_dump(include={
                 'skip_translate', 'base_url', 'api_key', 'model_id', 'to_lang', 'custom_prompt',
                 'temperature', 'thinking', 'chunk_size', 'concurrent',
-                'insert_mode', 'separator', 'glossary_dict'
+                'insert_mode', 'separator', 'glossary_dict', 'timeout'
             }, exclude_none=True)
             translator_args['glossary_generate_enable'] = payload.glossary_generate_enable
             translator_args['glossary_agent_config'] = build_glossary_agent_config()
diff --git a/docutranslate/static/index.html b/docutranslate/static/index.html
index 909b627..7590fc0 100644
--- a/docutranslate/static/index.html
+++ b/docutranslate/static/index.html
@@ -1 +1 @@
-<!DOCTYPE html>
<html lang="zh-CN" data-bs-theme="auto">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title data-i18n-title="pageTitle">DocuTranslate - 交互式文档翻译</title>
    <link rel="icon" href="/static/favicon.ico" type="image/x-icon">
    <!-- Bootstrap CSS -->
    <link href="/static/bootstrap.css" rel="stylesheet" crossorigin="anonymous">
    <!-- Bootstrap Icons -->
    <link rel="stylesheet" href="/static/bootstrap-icons.css">

    <style>
        body {
            background-color: var(--bs-body-bg);
        }

        button:focus {
            outline: none !important;
            box-shadow: none !important;
        }

        .main-container {
            display: flex;
            flex-direction: column;
            height: 100vh;
            padding-top: 1rem;
            padding-bottom: 1rem;
        }

        .settings-panel {
            height: calc(100vh - 2rem);
            overflow-y: auto;
            padding-right: 15px; /* for scrollbar */
        }

        .task-area {
            height: calc(100vh - 2rem);
            overflow-y: auto;
        }

        .task-card {
            transition: all 0.3s ease-in-out;
        }


        .task-id-placeholder {
            color: var(--bs-secondary-color);
            font-style: italic;
        }

        .log-area {
            height: 150px;
            background-color: var(--bs-tertiary-bg);
            border: 1px solid var(--bs-border-color);
            border-radius: .375rem;
            font-family: monospace;
            font-size: 0.8rem;
            padding: 10px;
            overflow-y: auto;
            white-space: pre-wrap;
            word-break: break-all;
        }

        .file-drop-area {
            border: 2px dashed var(--bs-secondary-bg);
            border-radius: .375rem;
            padding: 2rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease-in-out;
            background-color: var(--bs-body-bg);
        }

        .file-drop-area.drag-over {
            border-color: var(--bs-primary);
            background-color: var(--bs-secondary-bg);
        }

        .file-drop-area.file-selected {
            border-style: solid;
            border-color: var(--bs-success);
            background-color: var(--bs-success-bg-subtle);
        }

        .file-drop-area.input-error {
            border-color: var(--bs-danger);
        }

        .file-name-display.input-error-text {
            color: var(--bs-danger);
            font-weight: bold;
        }

        #printFrame, #translatedPreviewFrame {
            border: none;
            width: 100%;
        }

        #previewOffcanvas {
            --bs-offcanvas-width: 95vw;
            max-width: 1600px;
        }

        .preview-split-container {
            display: flex;
            flex-direction: row;
            height: 90%;
        }

        .preview-pane-wrapper {
            display: flex;
            flex-direction: column;
            overflow: hidden; /* Important for split.js */
        }

        .preview-pane-wrapper h6 {
            flex-shrink: 0;
            padding: 0.25rem;
        }

        .preview-pane-wrapper .preview-pane {
            flex-grow: 1; /* Make the inner pane grow */
            border: 1px solid var(--bs-border-color);
            border-radius: .375rem;
            overflow: auto;
        }

        .gutter {
            background-color: var(--bs-tertiary-bg);
            background-repeat: no-repeat;
            background-position: 50%;
        }

        .gutter.gutter-horizontal {
            cursor: col-resize;
            border-left: 1px solid var(--bs-border-color);
            border-right: 1px solid var(--bs-border-color);
        }

        .gutter.gutter-vertical {
            cursor: row-resize;
            border-top: 1px solid var(--bs-border-color);
            border-bottom: 1px solid var(--bs-border-color);
        }


        .preview-pane iframe, .preview-pane pre {
            width: 100%;
            height: 95%;
            border: none;
            margin: 0;
            padding: 0;
            overflow: auto;
            background-color: var(--bs-body-bg);
        }

        .slider-reset-btn {
            visibility: hidden;
        }

        .bottom-left-controls {
            position: fixed;
            bottom: 1rem;
            left: 1rem;
            z-index: 1050;
            display: flex;
            gap: 0.5rem;
        }

        .project-info p {
            letter-spacing: 0.8px;
            line-height: 1.6;
        }

        @media (max-width: 991.98px) {
            .main-container {
                height: auto;
                padding-bottom: 6rem;
            }

            .settings-panel, .task-area {
                height: auto;
                overflow-y: visible;
            }

            .settings-panel {
                padding-right: 0;
                margin-bottom: 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .task-card .col-md-7 {
                margin-top: 1.5rem;
            }

            #previewOffcanvas {
                --bs-offcanvas-width: 100vw;
            }
        }
    </style>
</head>
<body>

<div class="container-fluid main-container">
    <div class="row gx-4">
        <!-- Left: Settings Panel -->
        <div class="col-lg-4">
            <div class="settings-panel">
                <div class="d-flex justify-content-between align-items-center mb-3">
                    <div class="d-flex align-items-center">
                        <h4 class="mb-0 me-3 fw-bold">DocuTranslate</h4>
                        <div class="btn-group">
                            <button type="button" class="btn btn-sm btn-outline-info" data-bs-toggle="modal"
                                    data-bs-target="#tutorialModal">
                                <i class="bi bi-question-circle-fill me-1"></i><span data-i18n="tutorialBtn">教程</span>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-warning" data-bs-toggle="modal"
                                    data-bs-target="#contributorsModal">
                                <i class="bi bi-people-fill me-1"></i><span
                                    data-i18n="projectContributeBtn">项目协作</span>
                            </button>
                        </div>
                    </div>
                </div>

                <form id="translateForm">
                    <div class="accordion" id="settingsAccordion">

                        <!-- Workflow Selection -->
                        <div class="accordion-item" id="workflowSettingsContainer">
                            <h2 class="accordion-header" id="headingZero">
                                <button class="accordion-button" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseZero" aria-expanded="true"
                                        aria-controls="collapseZero">
                                    <strong><i class="bi bi-diagram-3 me-2"></i><span
                                            data-i18n="workflowTitle">选择工作流</span></strong>
                                </button>
                            </h2>
                            <div id="collapseZero" class="accordion-collapse collapse show"
                                 aria-labelledby="headingZero">
                                <div class="accordion-body">
                                    <select class="form-select" id="workflowTypeSelect">
                                        <option value="markdown_based" data-i18n="workflowOptionMarkdown">转Markdown再翻译
                                            (.pdf/.md/.png等)
                                        </option>
                                        <option value="txt" data-i18n="workflowOptionTxt">纯文本翻译 (.txt)</option>
                                        <option value="json" data-i18n="workflowOptionJson">JSON翻译 (.json)</option>
                                        <option value="docx" data-i18n="workflowOptionDocx">DOCX翻译 (.docx)</option>
                                        <option value="xlsx" data-i18n="workflowOptionXlsx">XLSX翻译 (.xlsx/.csv)
                                        </option>
                                        <option value="srt" data-i18n="workflowOptionSrt">SRT字幕翻译 (.srt)</option>
                                        <option value="epub" data-i18n="workflowOptionEpub">EPUB翻译 (.epub)</option>
                                        <option value="html" data-i18n="workflowOptionHtml">HTML翻译 (.html)</option>
                                    </select>
                                    <div class="form-check form-switch mt-2">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="autoWorkflowSwitch">
                                        <label class="form-check-label" for="autoWorkflowSwitch"
                                               data-i18n="autoWorkflowLabel">自动选择工作流</label>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] TXT Settings Container -->
                        <div class="accordion-item" id="txtSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingTxt">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseTxt" aria-expanded="false"
                                        aria-controls="collapseTxt">
                                    <strong id="txtSettingsTitle"><i
                                            class="bi bi-filetype-txt me-2"></i>TXT翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseTxt" class="accordion-collapse collapse" aria-labelledby="headingTxt">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="txt_insert_mode" class="form-label"
                                               data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="txt_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpTxt">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="txtSeparatorGroup" style="display: none;">
                                        <label for="txt_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="txt_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] DOCX Settings Container -->
                        <div class="accordion-item" id="docxSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingDocx">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseDocx" aria-expanded="false"
                                        aria-controls="collapseDocx">
                                    <strong id="docxSettingsTitle"><i class="bi bi-file-earmark-word me-2"></i>DOCX翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseDocx" class="accordion-collapse collapse" aria-labelledby="headingDocx">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="docx_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="docx_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpDocx">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="docxSeparatorGroup" style="display: none;">
                                        <label for="docx_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="docx_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholder"
                                               placeholder="例如: \n---翻译---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- XLSX Settings Container -->
                        <div class="accordion-item" id="xlsxSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingXlsx">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseXlsx" aria-expanded="false"
                                        aria-controls="collapseXlsx">
                                    <strong id="xlsxSettingsTitle"><i
                                            class="bi bi-file-earmark-spreadsheet me-2"></i>XLSX翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseXlsx" class="accordion-collapse collapse" aria-labelledby="headingXlsx">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="xlsx_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="xlsx_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpXlsx">
                                            选择如何将翻译后的文本插入到单元格中。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="xlsxSeparatorGroup" style="display: none;">
                                        <label for="xlsx_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="xlsx_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                    <div class="mb-3">
                                        <label for="xlsx_translate_regions" class="form-label"
                                               data-i18n="xlsxTranslateRegionsLabel">翻译区域 (可选)</label>
                                        <textarea class="form-control" id="xlsx_translate_regions"
                                                  name="translate_regions" rows="3"
                                                  data-i18n-placeholder="xlsxTranslateRegionsPlaceholder"
                                                  placeholder="每行一个区域, 例如:Sheet1!A1:B10（不指定表名则对所有表生效）"></textarea>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] SRT Settings Container -->
                        <div class="accordion-item" id="srtSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingSrt">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseSrt" aria-expanded="false"
                                        aria-controls="collapseSrt">
                                    <strong id="srtSettingsTitle"><i
                                            class="bi bi-file-text me-2"></i>SRT翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseSrt" class="accordion-collapse collapse" aria-labelledby="headingSrt">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="srt_insert_mode" class="form-label"
                                               data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="srt_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpSrt">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="srtSeparatorGroup" style="display: none;">
                                        <label for="srt_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="srt_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] EPUB Settings Container -->
                        <div class="accordion-item" id="epubSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingEpub">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseEpub" aria-expanded="false"
                                        aria-controls="collapseEpub">
                                    <strong id="epubSettingsTitle"><i class="bi bi-book me-2"></i>EPUB翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseEpub" class="accordion-collapse collapse" aria-labelledby="headingEpub">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="epub_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="epub_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpEpub">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="epubSeparatorGroup" style="display: none;">
                                        <label for="epub_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="epub_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] HTML Settings Container -->
                        <div class="accordion-item" id="htmlSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingHtml">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseHtml" aria-expanded="false"
                                        aria-controls="collapseHtml">
                                    <strong id="htmlSettingsTitle"><i class="bi bi-filetype-html me-2"></i>HTML翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseHtml" class="accordion-collapse collapse" aria-labelledby="headingHtml">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="html_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="html_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpHtml">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="htmlSeparatorGroup" style="display: none;">
                                        <label for="html_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="html_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: <!-- translated -->">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>


                        <!-- JSON Paths Settings Container -->
                        <div class="accordion-item" id="jsonSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingJson">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseJson" aria-expanded="false"
                                        aria-controls="collapseJson">
                                    <strong id="jsonSettingsTitle"><i class="bi bi-signpost-split me-2"></i>JSON路径配置</strong>
                                </button>
                            </h2>
                            <div id="collapseJson" class="accordion-collapse collapse" aria-labelledby="headingJson">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="json_paths_textarea" class="form-label" data-i18n="jsonPathLabel">需要翻译的JSON路径</label>
                                        <textarea class="form-control" id="json_paths_textarea" name="json_paths"
                                                  rows="4" required
                                                  data-i18n-placeholder="jsonPathPlaceholder" placeholder="每行一个路径, 例如:
$.name
$.*"></textarea>
                                        <div class="form-text" data-i18n="jsonPathHelp">
                                            采用<code>jsonpath-ng</code>的路径选择语法，每一行表示一个json路径。
                                            将翻译路径匹配对象内的所有字符串
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- Parsing Engine Settings Container -->
                        <div class="accordion-item" id="parsingSettingsContainer">
                            <h2 class="accordion-header" id="headingOne">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne">
                                    <strong id="parsingSettingsTitle"><i class="bi bi-file-earmark-binary me-2"></i>解析配置</strong>
                                </button>
                            </h2>
                            <div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="convert_engine" class="form-label" data-i18n="parsingEngineLabel">解析引擎</label>
                                        <select class="form-select" id="convert_engine" name="convert_engine">
                                            <!-- Options will be populated by JS -->
                                        </select>
                                        <div class="form-text" data-i18n="parsingEngineHelp">
                                            如果上传的文件本身是.md格式，此项可不选。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="mineruTokenGroup">
                                        <label for="mineru_token" class="form-label">
                                            Mineru Token
                                            <a href="https://mineru.net/apiManage/token" target="_blank" class="ms-1"
                                               data-i18n-title="getMineruTokenTitle" title="获取Mineru Token"><i
                                                    class="bi bi-box-arrow-up-right"></i></a>
                                        </label>
                                        <div class="input-group">
                                            <input type="password" class="form-control" id="mineru_token"
                                                   name="mineru_token" data-i18n-placeholder="mineruTokenPlaceholder"
                                                   placeholder="使用Mineru引擎时需要">
                                            <button class="btn btn-outline-secondary toggle-password" type="button"
                                                    data-target="mineru_token">
                                                <i class="bi bi-eye-slash"></i>
                                            </button>
                                        </div>
                                    </div>
                                    <!-- NEW: Mineru Model Version -->
                                    <div class="mb-3" id="mineruModelVersionGroup">
                                        <label for="model_version" class="form-label" data-i18n="modelVersionLabel">Mineru
                                            模型版本</label>
                                        <select class="form-select" id="model_version" name="model_version">
                                            <option value="vlm" data-i18n="modelVersionVlm">VLM</option>
                                            <option value="pipeline" data-i18n="modelVersionPipline">Pipeline</option>
                                        </select>
                                        <div class="form-text" data-i18n="modelVersionHelp">
                                            mineru VLM是更新的内测模型。
                                        </div>
                                    </div>
                                    <div class="form-check form-switch mb-2">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="formula_ocr"
                                               name="formula_ocr" checked>
                                        <label class="form-check-label" for="formula_ocr" data-i18n="formulaOcrLabel">公式识别</label>
                                    </div>
                                    <div class="form-check form-switch mb-2" id="codeOcrSwitch">
                                        <input class="form-check-input" type="checkbox" role="switch" id="code_ocr"
                                               name="code_ocr" checked>
                                        <label class="form-check-label" for="code_ocr"
                                               data-i18n="codeOcrLabel">代码识别</label>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- AI Settings -->
                        <div class="accordion-item">
                            <h2 class="accordion-header" id="headingTwo">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
                                    <strong id="aiSettingsTitle"><i class="bi bi-robot me-2"></i>翻译模型</strong>
                                </button>
                            </h2>
                            <div id="collapseTwo" class="accordion-collapse collapse" aria-labelledby="headingTwo">
                                <div class="accordion-body">
                                    <!-- [MODIFIED] Translation Mode to Checkbox -->
                                    <div class="form-check form-switch mb-3">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="skipTranslationSwitch">
                                        <label class="form-check-label" for="skipTranslationSwitch"
                                               data-i18n="skipTranslationLabel">跳过翻译</label>
                                    </div>

                                    <!-- Wrapper for AI Model settings -->
                                    <div id="aiModelSettingsContainer">
                                        <div>
                                            <label for="platform_select" class="form-label"
                                                   data-i18n="platformLabel">选择平台</label>
                                            <select class="form-select" id="platform_select">
                                                <option value="custom" data-i18n="platformCustom">自定义接口</option>
                                                <option value="https://api.openai.com/v1">OpenAI</option>
                                                <option value="https://generativelanguage.googleapis.com/v1beta/openai/">
                                                    Gemini
                                                </option>
                                                <option value="https://api.deepseek.com/v1">DeepSeek</option>
                                                <option value="https://dashscope.aliyuncs.com/compatible-mode/v1">
                                                    阿里云百炼(DashScope)
                                                </option>
                                                <option value="https://ark.cn-beijing.volces.com/api/v3">火山引擎(volces)
                                                </option>
                                                <option value="https://api.siliconflow.cn/v1">硅基流动(siliconflow CN)
                                                </option>
                                                <option value="https://open.bigmodel.cn/api/paas/v4">智谱AI(bigmodel
                                                    CN)
                                                </option>
                                                <option value="https://www.dmxapi.cn/v1">DMXAPI(CN)</option>
                                                <option value="https://www.dmxapi.com/v1">DMXAPI(Global)</option>
                                                <option value="https://openrouter.ai/api/v1">OpenRouter</option>
                                                <option value="http://127.0.0.1:1234/v1">LM Studio</option>
                                                <option value="http://127.0.0.1:11434/v1">Ollama</option>
                                            </select>
                                        </div>
                                        <div class="form-text mb-3" id="main_base_url_display_container">
                                            Base URL: <code id="main_base_url_display"></code>
                                        </div>
                                        <div class="mb-3" id="baseUrlGroup">
                                            <label for="base_url" class="form-label" data-i18n="baseUrlLabel">API 地址
                                                (Base
                                                URL)</label>
                                            <input type="url" class="form-control" id="base_url" name="base_url"
                                                   required
                                                   data-i18n-placeholder="baseUrlPlaceholder"
                                                   placeholder="OpenAi兼容地址">
                                        </div>
                                        <div class="mb-3">
                                            <label for="api_key" class="form-label">
                                                API Key
                                                <a href="#" target="_blank" class="ms-1" id="api_href"
                                                   data-i18n-title="getApiKeyTitle" title="获取API Key"><i
                                                        class="bi bi-box-arrow-up-right"></i></a>
                                            </label>
                                            <div class="input-group">
                                                <input type="password" class="form-control" id="api_key" name="api_key"
                                                       required
                                                       data-i18n-placeholder="apiKeyPlaceholder"
                                                       placeholder="请输入您的API Key">
                                                <button class="btn btn-outline-secondary toggle-password" type="button"
                                                        data-target="api_key">
                                                    <i class="bi bi-eye-slash"></i>
                                                </button>
                                            </div>
                                        </div>
                                        <div class="mb-3">
                                            <label for="model_id" class="form-label"
                                                   data-i18n="modelIdLabel">选择模型</label>
                                            <input type="text" class="form-control" id="model_id" name="model_id"
                                                   required
                                                   data-i18n-placeholder="modelIdPlaceholder"
                                                   placeholder="例如: gpt-4o, glm-4">
                                        </div>

                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- Translation Settings -->
                        <div class="accordion-item" id="translationSettingsAccordionItem">
                            <h2 class="accordion-header" id="headingThree">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseThree" aria-expanded="false"
                                        aria-controls="collapseThree">
                                    <strong id="translationSettingsTitle"><i
                                            class="bi bi-translate me-2"></i>翻译配置</strong>
                                </button>
                            </h2>
                            <div id="collapseThree" class="accordion-collapse collapse" aria-labelledby="headingThree">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="to_lang" class="form-label"
                                               data-i18n="targetLanguageLabel">目标语言</label>
                                        <select class="form-select" id="to_lang" name="to_lang">
                                            <option value="中文">中文(简体中文)</option>
                                            <option value="英文">英文(English)</option>
                                            <option value="西班牙文">西班牙文(Español)</option>
                                            <option value="法文">法文(Français)</option>
                                            <option value="德文">德文(Deutsch)</option>
                                            <option value="日文">日文(日本語)</option>
                                            <option value="韩文">韩文(한국어)</option>
                                            <option value="俄文">俄文(Русский)</option>
                                            <option value="葡萄牙文">葡萄牙文(Português)</option>
                                            <option value="阿拉伯文">阿拉伯文(العَرَبِيَّة)</option>
                                            <option value="越南文">越南文(tiếng Việt)</option>
                                            <option value="custom" data-i18n="targetLanguageCustom">其它 (自定义)
                                            </option>
                                        </select>
                                        <div class="mt-2" id="customLangGroup" style="display: none;">
                                            <input type="text" class="form-control" id="custom_to_lang"
                                                   name="custom_to_lang" data-i18n-placeholder="customLangPlaceholder"
                                                   placeholder="请输入目标语言, 例如: Italian">
                                        </div>
                                    </div>
                                    <div class="mb-3">
                                        <label class="form-label" data-i18n="thinkingModeLabel">思考模式</label><i
                                            class="bi bi-question-circle ms-2 tooltip-icon"
                                            data-bs-toggle="tooltip"
                                            data-bs-placement="top"
                                            data-i18n-title="thinkingModeTooltip"
                                            data-bs-title="设置混合推理模型的思考模式，目前支持智谱平台的glm-4.5系列、阿里云的qwen3系列、火山引擎的Doubao-Seed-1.6系列等,建议关闭">
                                    </i>
                                        <div id="thinkingModeBtnGroup" class="btn-group w-100" role="group"
                                             aria-label="Thinking Mode Toggle">
                                            <input type="radio" class="btn-check" name="thinking" id="thinkingEnable"
                                                   value="enable" autocomplete="off">
                                            <label class="btn btn-outline-primary" for="thinkingEnable"
                                                   data-i18n="thinkingModeEnable">启用</label>

                                            <input type="radio" class="btn-check" name="thinking" id="thinkingDisable"
                                                   value="disable" autocomplete="off">
                                            <label class="btn btn-outline-primary" for="thinkingDisable"
                                                   data-i18n="thinkingModeDisable">禁用(推荐)</label>

                                            <input type="radio" class="btn-check" name="thinking" id="thinkingDefault"
                                                   value="default" autocomplete="off">
                                            <label class="btn btn-outline-primary" for="thinkingDefault"
                                                   data-i18n="thinkingModeDefault">默认</label>
                                        </div>
                                    </div>
                                    <div class="mb-3">
                                        <label for="custom_prompt" class="form-label" data-i18n="customPromptLabel">自定义Prompt</label>
                                        <textarea class="form-control" id="custom_prompt"
                                                  name="custom_prompt" rows="3"
                                                  data-i18n-placeholder="customPromptPlaceholder"
                                                  placeholder="可选，如“人名保持原文不翻译”"></textarea>
                                    </div>
                                    <!-- MOVED FROM ADVANCED SETTINGS -->
                                    <div class="mb-3 border-top pt-3">
                                        <label for="chunk-size-slider"
                                               class="form-label d-flex justify-content-between">
                                            <span><span data-i18n="chunkSizeLabel">分块大小</span>: <span
                                                    id="chunk-size-display"></span></span>
                                            <button type="button"
                                                    class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                    id="chunk-size-reset" data-i18n="resetBtn">重置
                                            </button>
                                        </label>
                                        <input type="range" class="form-range" min="1000" max="8000" step="100"
                                               id="chunk-size-slider" name="chunk_size">
                                    </div>
                                    <div class="mb-3">
                                        <label for="concurrent-slider"
                                               class="form-label d-flex justify-content-between">
                                            <span><span data-i18n="concurrentLabel">并发数</span>: <span
                                                    id="concurrent-display"></span></span>
                                            <button type="button"
                                                    class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                    id="concurrent-reset" data-i18n="resetBtn">重置
                                            </button>
                                        </label>
                                        <input type="range" class="form-range" min="1" max="60" step="1"
                                               id="concurrent-slider" name="concurrent">
                                    </div>
                                    <div class="mb-3">
                                        <label for="temperature-slider"
                                               class="form-label d-flex justify-content-between">
                                            <span>Temperature: <span id="temperature-display"></span></span>
                                            <button type="button"
                                                    class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                    id="temperature-reset" data-i18n="resetBtn">重置
                                            </button>
                                        </label>
                                        <input type="range" class="form-range" min="0" max="2" step="0.1"
                                               id="temperature-slider" name="temperature">
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [MODIFIED] Glossary Generation Settings -->
                        <div class="accordion-item" id="glossaryGenerationContainer">
                            <h2 class="accordion-header" id="headingGlossaryGen">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseGlossaryGen" aria-expanded="false"
                                        aria-controls="collapseGlossaryGen">
                                    <strong id="glossaryGenSettingsTitle"><i
                                            class="bi bi-journal-bookmark me-2"></i><span data-i18n="glossaryGenTitle">术语表</span></strong>
                                </button>
                            </h2>
                            <div id="collapseGlossaryGen" class="accordion-collapse collapse"
                                 aria-labelledby="headingGlossaryGen">
                                <div class="accordion-body">
                                    <!-- [MOVED] Glossary Section -->
                                    <div class="mb-3">
                                        <label for="glossary_files" class="form-label" data-i18n="glossaryLabel">术语表
                                            (可选)</label>
                                        <input class="form-control" type="file" id="glossary_files" multiple
                                               accept=".csv">
                                        <div class="form-text" data-i18n="glossaryHelp">
                                            选择一个或多个CSV文件。文件需包含'src'和'dst'两列标题，分别代表原文和译文。
                                        </div>
                                        <div class="btn-group mt-2" role="group">
                                            <button type="button" class="btn btn-sm btn-outline-info"
                                                    id="viewGlossaryBtn">
                                                <i class="bi bi-card-list me-1"></i><span data-i18n="viewGlossaryBtn">查看术语表</span>
                                            </button>
                                            <button type="button" class="btn btn-sm btn-outline-danger"
                                                    id="clearGlossaryBtn">
                                                <i class="bi bi-trash me-1"></i><span
                                                    data-i18n="clearGlossaryBtn">清空</span>
                                            </button>
                                        </div>
                                    </div>

                                    <!-- Enable/Disable Switch -->
                                    <div class="form-check form-switch mb-3 border-top pt-3">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="glossary_generate_enable" name="glossary_generate_enable">
                                        <label class="form-check-label" for="glossary_generate_enable"
                                               data-i18n="glossaryGenEnableLabel">自动生成术语表</label>
                                    </div>

                                    <!-- Agent Config Options (conditionally displayed) -->
                                    <div id="glossaryAgentOptionsContainer" style="display: none;">
                                        <div class="mb-3">
                                            <label class="form-label"
                                                   data-i18n="glossaryGenConfigLabel">生成术语表配置</label>
                                            <div class="btn-group w-100" role="group">
                                                <input type="radio" class="btn-check"
                                                       name="glossary_agent_config_choice" id="glossaryAgentSame"
                                                       value="same" autocomplete="off" checked>
                                                <label class="btn btn-outline-primary" for="glossaryAgentSame"
                                                       data-i18n="glossaryGenConfigSame">与翻译配置相同</label>

                                                <input type="radio" class="btn-check"
                                                       name="glossary_agent_config_choice" id="glossaryAgentCustom"
                                                       value="custom" autocomplete="off">
                                                <label class="btn btn-outline-primary" for="glossaryAgentCustom"
                                                       data-i18n="glossaryGenConfigCustom">自定义</label>
                                            </div>
                                        </div>

                                        <!-- Custom Agent Config Form (conditionally displayed) -->
                                        <div id="glossaryAgentCustomConfigContainer" class="border p-3 rounded"
                                             style="display: none;">

                                            <div>
                                                <label for="glossary_agent_platform_select" class="form-label"
                                                       data-i18n="platformLabel">选择平台</label>
                                                <select class="form-select" id="glossary_agent_platform_select">
                                                    <!-- Options will be copied from main select -->
                                                </select>
                                            </div>
                                            <div class="form-text mb-3" id="glossary_base_url_display_container">
                                                Base URL: <code id="glossary_base_url_display"></code>
                                            </div>
                                            <div class="mb-3" id="glossaryAgentBaseUrlGroup" style="display: none;">
                                                <label for="glossary_agent_baseurl" class="form-label"
                                                       data-i18n="baseUrlLabel">API 地址 (Base URL)</label>
                                                <input type="url" class="form-control" id="glossary_agent_baseurl"
                                                       name="glossary_agent_baseurl"
                                                       data-i18n-placeholder="baseUrlPlaceholder"
                                                       placeholder="OpenAi兼容地址">
                                            </div>

                                            <div class="mb-3">
                                                <label for="glossary_agent_key" class="form-label">API Key</label>
                                                <div class="input-group">
                                                    <input type="password" class="form-control" id="glossary_agent_key"
                                                           name="glossary_agent_key"
                                                           data-i18n-placeholder="apiKeyPlaceholder"
                                                           placeholder="请输入您的API Key">
                                                    <button class="btn btn-outline-secondary toggle-password"
                                                            type="button" data-target="glossary_agent_key"><i
                                                            class="bi bi-eye-slash"></i></button>
                                                </div>
                                            </div>

                                            <div class="mb-3">
                                                <label for="glossary_agent_model_id" class="form-label"
                                                       data-i18n="modelIdLabel">选择模型</label>
                                                <input type="text" class="form-control" id="glossary_agent_model_id"
                                                       name="glossary_agent_model_id"
                                                       data-i18n-placeholder="modelIdPlaceholder"
                                                       placeholder="例如: gpt-4-turbo, glm-4">
                                            </div>


                                            <!-- START: Added Target Language for Glossary Agent -->
                                            <div class="mb-3">
                                                <label for="glossary_agent_to_lang" class="form-label"
                                                       data-i18n="targetLanguageLabel">目标语言</label>
                                                <select class="form-select" id="glossary_agent_to_lang"
                                                        name="glossary_agent_to_lang">
                                                    <option value="中文">中文(简体中文)</option>
                                                    <option value="英文">英文(English)</option>
                                                    <option value="西班牙文">西班牙文(Español)</option>
                                                    <option value="法文">法文(Français)</option>
                                                    <option value="德文">德文(Deutsch)</option>
                                                    <option value="日文">日文(日本語)</option>
                                                    <option value="韩文">韩文(한국어)</option>
                                                    <option value="俄文">俄文(Русский)</option>
                                                    <option value="葡萄牙文">葡萄牙文(Português)</option>
                                                    <option value="阿拉伯文">阿拉伯文(العَرَبِيَّة)</option>
                                                    <option value="越南文">越南文(tiếng Việt)</option>
                                                    <option value="custom" data-i18n="targetLanguageCustom">其它
                                                        (自定义)
                                                    </option>
                                                </select>
                                                <div class="mt-2" id="glossaryAgentCustomLangGroup"
                                                     style="display: none;">
                                                    <input type="text" class="form-control"
                                                           id="glossary_agent_custom_to_lang"
                                                           name="glossary_agent_custom_to_lang"
                                                           data-i18n-placeholder="customLangPlaceholder"
                                                           placeholder="请输入目标语言, 例如: Italian">
                                                </div>
                                            </div>
                                            <!-- END: Added Target Language for Glossary Agent -->

                                            <div class="mb-3">
                                                <label for="glossary-agent-chunk-size-slider"
                                                       class="form-label d-flex justify-content-between">
                                                    <span><span data-i18n="chunkSizeLabel">分块大小</span>: <span
                                                            id="glossary-agent-chunk-size-display"></span></span>
                                                    <button type="button"
                                                            class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                            id="glossary-agent-chunk-size-reset" data-i18n="resetBtn">重置
                                                    </button>
                                                </label>
                                                <input type="range" class="form-range" min="1000" max="8000" step="100"
                                                       id="glossary-agent-chunk-size-slider"
                                                       name="glossary_agent_chunk_size">
                                            </div>
                                            <div class="mb-3">
                                                <label for="glossary-agent-concurrent-slider"
                                                       class="form-label d-flex justify-content-between">
                                                    <span><span data-i18n="concurrentLabel">并发数</span>: <span
                                                            id="glossary-agent-concurrent-display"></span></span>
                                                    <button type="button"
                                                            class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                            id="glossary-agent-concurrent-reset" data-i18n="resetBtn">重置
                                                    </button>
                                                </label>
                                                <input type="range" class="form-range" min="1" max="60" step="1"
                                                       id="glossary-agent-concurrent-slider"
                                                       name="glossary_agent_concurrent">
                                            </div>
                                            <div class="mb-3">
                                                <label for="glossary-agent-temperature-slider"
                                                       class="form-label d-flex justify-content-between">
                                                    <span>Temperature: <span
                                                            id="glossary-agent-temperature-display">0.7</span></span>
                                                    <button type="button"
                                                            class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                            id="glossary-agent-temperature-reset" data-i18n="resetBtn">
                                                        重置
                                                    </button>
                                                </label>
                                                <input type="range" class="form-range" min="0" max="2" step="0.1"
                                                       id="glossary-agent-temperature-slider"
                                                       name="glossary_agent_temperature">
                                            </div>

                                            <div class="mb-3">
                                                <label class="form-label" data-i18n="thinkingModeLabel">思考模式</label>
                                                <div id="glossaryAgentThinkingModeBtnGroup" class="btn-group w-100"
                                                     role="group">
                                                    <input type="radio" class="btn-check" name="glossary_agent_thinking"
                                                           id="glossaryAgentThinkingEnable" value="enable"
                                                           autocomplete="off">
                                                    <label class="btn btn-outline-primary"
                                                           for="glossaryAgentThinkingEnable"
                                                           data-i18n="thinkingModeEnable">启用</label>
                                                    <input type="radio" class="btn-check" name="glossary_agent_thinking"
                                                           id="glossaryAgentThinkingDisable" value="disable"
                                                           autocomplete="off">
                                                    <label class="btn btn-outline-primary"
                                                           for="glossaryAgentThinkingDisable"
                                                           data-i18n="thinkingModeDisable">禁用(推荐)</label>
                                                    <input type="radio" class="btn-check" name="glossary_agent_thinking"
                                                           id="glossaryAgentThinkingDefault" value="default"
                                                           autocomplete="off" checked>
                                                    <label class="btn btn-outline-primary"
                                                           for="glossaryAgentThinkingDefault"
                                                           data-i18n="thinkingModeDefault">默认</label>
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                    </div>
                </form>

                <!-- 项目信息 -->
                <div class="mt-4 text-center text-muted small project-info">
                    <p class="bi bi-github mb-2" data-i18n="githubInfo">
                        GitHub主页(欢迎star❤): <br/>
                        <a href="https://github.com/xunbu/docutranslate" target="_blank" rel="noopener noreferrer">https://github.com/xunbu/docutranslate</a>
                    </p>
                    <p class="bi bi-tencent-qq mb-2" data-i18n="qqGroupInfo">
                        交流QQ群: 1047781902
                    </p>
                    <p class="bi mb-0">version:<span id="versionDisplay"></span></p>
                </div>

            </div>
        </div>

        <!-- Right: Task Area -->
        <div class="col-lg-8">
            <div class="task-area" id="task-area-container">
                <div class="d-flex justify-content-between align-items-center mb-3">
                    <h4 class="mb-0"><i class="bi bi-list-task me-2"></i><span data-i18n="taskListTitle">任务列表</span>
                    </h4>
                    <button class="btn btn-primary" id="addNewTaskBtn"><i class="bi bi-plus-circle-fill me-2"></i><span
                            data-i18n="newTaskBtn">新建任务</span>
                    </button>
                </div>
                <div id="task-container">
                    <!-- Task cards will be injected here -->
                </div>
                <div id="no-task-placeholder" class="text-center text-muted mt-5">
                    <img src="/static/favicon.ico" alt="LOGO" style="width:10%;min-width: 55px; height: auto;">
                    <p class="mt-3" data-i18n="noTaskPlaceholder">当前没有任务，点击“新建任务”开始吧！</p>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Task Card Template -->
<template id="taskCardTemplate">
    <div class="card mb-3 task-card">
        <div class="card-header d-flex justify-content-between align-items-center">
            <span class="fw-bold"><span data-i18n="taskCardIdLabel">任务 ID</span>: <code class="task-id-display"><span
                    class="task-id-placeholder" data-i18n="taskCardIdPlaceholder">等待提交...</span></code></span>
            <button type="button" class="btn-close remove-task-btn" aria-label="Close"></button>
        </div>
        <div class="card-body">
            <div class="row">
                <div class="col-md-5">
                    <input type="file" class="d-none file-input">
                    <div class="file-drop-area">
                        <div class="file-drop-default">
                            <i class="bi bi-cloud-arrow-up fs-1"></i>
                            <p class="file-drop-prompt mb-0" data-i18n="taskCardFileDrop">点击或拖拽文件到此处</p>
                        </div>
                        <div class="file-drop-selected" style="display: none;">
                            <i class="bi bi-check-circle-fill fs-1 text-success"></i>
                            <p class="mb-0 mt-2 fw-bold text-success" data-i18n="taskCardFileSelected">文件已选择</p>
                        </div>
                    </div>
                    <div class="file-name-display-wrapper mt-2" style="display: none;">
                        <span class="fw-bold" data-i18n="taskCardFilenameLabel">文件名: </span>
                        <span class="file-name-display text-success"></span>
                    </div>
                </div>
                <div class="col-md-7">
                    <h6><i class="bi bi-terminal me-2"></i><span data-i18n="taskCardLogLabel">日志</span></h6>
                    <div class="log-area"></div>
                    <div class="mt-2">
                        <div class="status-message-container">
                            <span class="status-message small text-muted"
                                  data-i18n="taskCardStatusWaiting">等待上传文件...</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <div class="card-footer d-flex justify-content-between align-items-center">
            <div class="download-buttons" style="display: none;">
                <button class="btn btn-sm btn-success preview-html-btn" style="display: none;"><i
                        class="bi bi-eye-fill me-1"></i><span data-i18n="taskCardPreviewBtn">预览</span>
                </button>
                <div class="btn-group">
                    <button type="button" class="btn btn-sm btn-secondary dropdown-toggle" data-bs-toggle="dropdown"
                            aria-expanded="false">
                        <i class="bi bi-download me-1"></i><span data-i18n="taskCardDownloadBtn">下载</span>
                    </button>
                    <ul class="dropdown-menu download-menu-container">
                        <!-- Populated by JavaScript -->
                    </ul>
                </div>
                <!-- [NEW] Attachment Button Group -->
                <div class="btn-group attachment-btn-group" style="display: none;">
                    <button type="button" class="btn btn-sm btn-info dropdown-toggle" data-bs-toggle="dropdown"
                            aria-expanded="false">
                        <i class="bi bi-paperclip me-1"></i><span data-i18n="taskCardAttachmentBtn">附件</span>
                    </button>
                    <ul class="dropdown-menu attachment-menu-container">
                        <!-- Populated by JavaScript -->
                    </ul>
                </div>
            </div>
            <button class="btn btn-primary start-translate-btn ms-auto"><i class="bi bi-play-fill me-1"></i><span
                    data-i18n="taskCardStartBtn">开始翻译</span>
            </button>
        </div>
    </div>
</template>

<!-- Reusable Download Menu Template -->
<template id="downloadMenuTemplate">
    <li class="download-item-md"><a class="dropdown-item" href="#"><i
            class="bi bi-markdown me-2"></i><span data-i18n="downloadMdEmbedded">Markdown(嵌图)</span></a></li>
    <li class="download-item-md-zip"><a class="dropdown-item" href="#"><i
            class="bi bi-file-zip me-2"></i><span data-i18n="downloadMdZip">Markdown压缩包</span></a></li>
    <li class="download-item-txt"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-txt me-2"></i>TXT</a></li>
    <li class="download-item-json"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-json me-2"></i>JSON</a></li>
    <li class="download-item-docx"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-docx me-2"></i>DOCX</a></li>
    <li class="download-item-xlsx"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-xlsx me-2"></i>XLSX</a></li>
    <li class="download-item-csv"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-csv me-2"></i>CSV</a></li>
    <li class="download-item-srt"><a class="dropdown-item" href="#"><i
            class="bi bi-file-text me-2"></i>SRT</a></li>
    <li class="download-item-epub"><a class="dropdown-item" href="#"><i
            class="bi bi-book me-2"></i>EPUB</a></li>
    <li class="download-item-html"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-html me-2"></i>HTML</a></li>
    <li class="download-item-pdf"><a class="dropdown-item" href="#"><i
            class="bi bi-file-earmark-pdf me-2"></i>PDF</a></li>
</template>


<!-- Preview Offcanvas with Resizable Panes -->
<div class="offcanvas offcanvas-end" data-bs-scroll="true" tabindex="-1" id="previewOffcanvas"
     aria-labelledby="previewOffcanvasLabel">
    <div class="offcanvas-header border-bottom">
        <h5 class="offcanvas-title" id="previewOffcanvasLabel" data-i18n="previewTitle">预览</h5>
        <div class="btn-group me-auto ms-4" role="group">
            <button type="button" class="btn btn-sm btn-primary" id="setBilingualViewBtn"
                    data-i18n="previewBilingualBtn">双语
            </button>
            <button type="button" class="btn btn-sm btn-outline-primary" id="setTranslatedOnlyViewBtn"
                    data-i18n="previewTranslatedOnlyBtn">仅译文
            </button>
        </div>
        <button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
    </div>
    <div class="offcanvas-body d-flex flex-column p-2">
        <div class="preview-split-container flex-grow-1">
            <div id="originalPreviewContainer" class="preview-pane-wrapper">
                <h6 class="text-center text-muted small" data-i18n="previewOriginal">原文</h6>
                <div class="preview-pane" id="originalPreviewPane"></div>
            </div>
            <div id="translatedPreviewContainer" class="preview-pane-wrapper">
                <h6 class="text-center text-muted small" data-i18n="previewTranslated">译文</h6>
                <div class="preview-pane">
                    <iframe id="translatedPreviewFrame" src="about:blank"></iframe>
                </div>
            </div>
        </div>
        <div class="offcanvas-footer mt-2 pt-3 border-top d-flex justify-content-end align-items-center">
            <button type="button" class="btn btn-secondary" data-bs-dismiss="offcanvas" data-i18n="closeBtn">关闭
            </button>
            <div class="btn-group ms-2">
                <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown"
                        aria-expanded="false" id="previewDownloadBtn">
                    <i class="bi bi-download me-1"></i><span data-i18n="downloadBtn">下载</span>
                </button>
                <ul class="dropdown-menu dropdown-menu-end" id="previewDownloadMenu">
                    <!-- Populated by JavaScript -->
                </ul>
            </div>
        </div>
    </div>
</div>

<!-- Hidden iframe for direct PDF printing -->
<iframe id="printFrame" style="display: none;"></iframe>

<!-- Bottom Left Controls -->
<div class="bottom-left-controls">
    <!-- Language Switcher -->
    <div class="dropdown">
        <button class="btn btn-secondary dropdown-toggle" type="button" id="language-switcher" data-bs-toggle="dropdown"
                aria-expanded="false" title="切换语言 / Switch Language">
            <i class="bi bi-translate"></i>
        </button>
        <ul class="dropdown-menu" aria-labelledby="language-switcher" id="languageMenu">
            <li><a class="dropdown-item" href="#" data-lang="zh">中文</a></li>
            <li><a class="dropdown-item" href="#" data-lang="en">English</a></li>
        </ul>
    </div>

    <!-- Theme Switcher -->
    <div class="dropdown">
        <button class="btn btn-secondary dropdown-toggle" type="button" id="theme-switcher" data-bs-toggle="dropdown"
                aria-expanded="false">
            <i class="bi bi-circle-half"></i>
        </button>
        <ul class="dropdown-menu" aria-labelledby="theme-switcher">
            <li>
                <button class="dropdown-item" type="button" data-bs-theme-value="light"><i
                        class="bi bi-sun-fill me-2"></i>
                    Light
                </button>
            </li>
            <li>
                <button class="dropdown-item" type="button" data-bs-theme-value="dark"><i
                        class="bi bi-moon-stars-fill me-2"></i> Dark
                </button>
            </li>
            <li>
                <button class="dropdown-item active" type="button" data-bs-theme-value="auto"><i
                        class="bi bi-circle-half me-2"></i> Auto
                </button>
            </li>
        </ul>
    </div>
</div>


<!-- Tutorial Modal -->
<div class="modal fade" id="tutorialModal" tabindex="-1" aria-labelledby="tutorialModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-lg modal-dialog-centered modal-dialog-scrollable">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="tutorialModalLabel"><i class="bi bi-book-half me-2"></i><span
                        data-i18n="tutorialModalTitle">使用教程</span></h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body" data-i18n="tutorialModalBody">
                <p><i class="bi bi-camera-video me-2"></i>视频教程可以在B站搜索 <a
                        href="https://search.bilibili.com/all?keyword=docutranslate" target="_blank">docutranslate</a>
                    获取。</p>
                <p>欢迎使用 DocuTranslate！请按照以下步骤完成文档翻译：</p>
                <ol>
                    <li>
                        <strong><i class="bi bi-diagram-3 me-2"></i>选择工作流</strong>
                        <p class="mt-2">
                            首先，在配置面板顶部选择您需要的翻译流程。不同的工作流适用于不同类型的文件：
                        <ul>
                            <li><b>转Markdown再翻译</b>: 适用于翻译PDF、markdown、图片等文件。</li>
                            <li><b>纯文本翻译</b>: 用于翻译 <code>.txt</code> 等纯文本文件。</li>
                            <li><b>JSON翻译</b>: 用于翻译 <code>.json</code> 文件中的特定字段。</li>
                            <li><b>DOCX翻译</b>: 用于翻译 <code>.docx</code> 文件。</li>
                            <li><b>XLSX翻译</b>: 用于翻译 <code>.xlsx</code> 电子表格、 <code>.csv</code> 文件。</li>
                            <li><b>SRT字幕翻译</b>: 用于翻译 <code>.srt</code> 字幕文件。</li>
                            <li><b>EPUB翻译</b>: 用于翻译 <code>.epub</code> 电子书文件。</li>
                            <li><b>HTML翻译</b>: 用于翻译 <code>.html</code> 文件。</li>
                        </ul>
                        <div class="alert alert-info mt-2" role="alert">
                            <i class="bi bi-lightbulb-fill me-2"></i>新增功能:
                            "自动选择工作流"开关已默认开启。您只需上传文件，系统会自动为您匹配合适的工作流，简化操作。
                        </div>
                        </p>
                    </li>
                    <li>
                        <strong><i class="bi bi-gear-fill me-2"></i>配置参数</strong>
                        <p class="mt-2">根据您选择的工作流，完成相应的配置。所有配置项都会自动保存在您的浏览器中。</p>
                        <ul>
                            <li class="mb-2"><strong>解析配置</strong> (仅在“转Markdown再翻译”工作流下显示):
                                <ul class="mt-1">
                                    <li><strong>解析引擎</strong>:
                                        选择一个引擎将您的文件（如PDF）转换为适合翻译的Markdown格式。如果您的文件已经是Markdown格式，则无需选择。
                                    </li>
                                    <li><strong>Mineru Token</strong>: 如果您选择 <code>minerU</code> 引擎，需要在此处填入您的Token。
                                    </li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>TXT/DOCX/XLSX/SRT/EPUB/HTML翻译选项</strong> (在对应工作流下显示):
                                <ul class="mt-1">
                                    <li><strong>插入模式</strong>:
                                        定义翻译结果如何放入文档或字幕。您可以选择直接“替换”原文，或是在原文之后“附加”，或是在原文之前“前置”。
                                    </li>
                                    <li><strong>分隔符</strong>: 当选择“附加”或“前置”模式时，此项用于在原文和译文之间插入分隔符。
                                    </li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>JSON路径配置</strong> (仅在“JSON翻译”工作流下显示):
                                <ul class="mt-1">
                                    <li><strong>需要翻译的JSON路径</strong>: 每行输入一个 <a
                                            href="https://goessner.net/articles/JsonPath/" target="_blank">JSONPath</a>
                                        表达式，指定需要翻译的字段。
                                    </li>
                                    <li>例如:<code>$..description</code>翻译所有键为description的值。<code>$.items[0].name</code>翻译第一个item的name值。
                                        <code>$.*</code>翻译所有字符串。
                                    </li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>翻译模型</strong>:
                                <ul class="mt-1">
                                    <li><strong>跳过翻译</strong>:
                                        勾选此项后，将只执行文档解析和格式转换，不调用AI进行翻译。
                                    </li>
                                    <li><strong>选择平台/API 地址/API Key/模型 ID</strong>:
                                        配置您希望使用的AI翻译服务。
                                    </li>
                                    <li>模型ID参考平台文档，建议使用非推理模型或混合推理模型（关闭思考）。</li>
                                    <li>模型能力指令遵循越强，<strong>出错</strong>、<strong>漏翻</strong>的概率越低。</li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>翻译配置</strong>:
                                <ul class="mt-1">
                                    <li><strong>目标语言/自定义Prompt/术语表</strong>:
                                        指定翻译的目标语言、附加指令以及用于保证特定名词翻译准确性的术语表。
                                    </li>
                                    <li><strong>思考模式</strong>:设置混合推理模型是否进行思考，目前支持智谱的glm4.5系列、阿里云的qwen3系列、火山引擎的seed1.6系列，建议选择禁用思考。
                                    </li>
                                    <li><strong>分块大小/并发数/Temperature</strong>: 发给AI的分块大小、并发请求数和温度，通常保持默认即可。
                                    </li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                    <li>
                        <strong><i class="bi bi-file-earmark-arrow-up-fill me-2"></i>上传文件</strong>
                        <p class="mt-2">在右侧的任务列表中，点击或拖拽您的文档到文件上传区域。</p>
                    </li>
                    <li>
                        <strong><i class="bi bi-play-circle-fill me-2"></i>开始翻译</strong>
                        <p class="mt-2">文件选择成功后，点击任务卡片右下角的 <span
                                class="badge bg-primary">开始翻译</span> 按钮。系统将开始处理任务，您可以在日志区域查看实时进度。
                        </p>
                    </li>
                    <li>
                        <strong><i class="bi bi-check-circle-fill me-2"></i>查看与下载</strong>
                        <p class="mt-2">翻译完成后，任务卡片下方会出现操作按钮：</p>
                        <ul>
                            <li><span class="badge bg-success"><i class="bi bi-eye-fill me-1"></i>预览</span>:
                                在右侧滑出的面板中进行原文和译文的对照预览（仅作参考）。
                            </li>
                            <li><span class="badge bg-secondary"><i class="bi bi-download me-1"></i>下载</span>:
                                下载包括 PDF, DOCX, XLSX, HTML, Markdown 等多种格式的译文。
                            </li>
                            <li><span class="badge bg-info"><i class="bi bi-paperclip me-1"></i>附件</span>:
                                如果翻译过程中生成了附加文件（如术语表），可在此处下载。
                            </li>
                        </ul>
                    </li>
                </ol>
                <div class="alert alert-info mt-3" role="alert">
                    <i class="bi bi-info-circle-fill me-2"></i><strong>提示</strong>: 所有配置都会自动保存在您的浏览器本地，方便下次使用。
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-primary" data-bs-dismiss="modal" data-i18n="tutorialUnderstandBtn">
                    我明白了
                </button>
            </div>
        </div>
    </div>
</div>
<!-- Contributors Modal -->
<div class="modal fade" id="contributorsModal" tabindex="-1" aria-labelledby="contributorsModalLabel"
     aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="contributorsModalLabel"><i
                        class="bi bi-heart-fill me-2 text-danger"></i><span
                        data-i18n="contributorsModalTitle">感谢贡献</span>
                </h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body">
                <p data-i18n="contributorsPara1">DocuTranslate是一个开源项目！大家的需求与使用是项目进步的动力。</p>
                <p data-i18n="contributorsPara2">感谢所有资助项目、提交代码与宝贵建议及给项目star的朋友们！</p>
                <div class="alert alert-success mt-4" role="alert">
                    <p data-i18n="contributorsWelcome">欢迎通过以下方式参与贡献：</p>
                    <hr>
                    <p class="mb-0">
                        <a href="https://github.com/xunbu/docutranslate" target="_blank"
                           class="btn btn-info btn-sm ms-2">
                            <i class="bi bi-github me-1"></i><span data-i18n="contributorsGithub">github 主页</span>
                        </a>
                        <a href="https://github.com/xunbu/docutranslate/pulls" target="_blank"
                           class="btn btn-success btn-sm ms-2">
                            <i class="bi bi-git me-1"></i><span data-i18n="contributorsPR">提交 Pull Request</span>
                        </a>
                        <a href="https://github.com/xunbu/docutranslate/issues" target="_blank"
                           class="btn btn-warning btn-sm ms-2">
                            <i class="bi bi-bug-fill me-1"></i><span data-i18n="contributorsIssue">报告 Issue</span>
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                    </p>
                    <hr>
                    <p data-i18n="contributorsQQ">或者通过QQ群联系作者：<span>1047781902</span></p>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal" data-i18n="closeBtn">关闭
                </button>
            </div>
        </div>
    </div>
</div>

<!-- [NEW] Glossary Modal -->
<div class="modal fade" id="glossaryModal" tabindex="-1" aria-labelledby="glossaryModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered modal-dialog-scrollable">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="glossaryModalLabel" data-i18n="glossaryModalTitle">当前术语表</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body">
                <table class="table table-striped table-hover">
                    <thead>
                    <tr>
                        <th scope="col" data-i18n="glossaryTableSource">原文 (src)</th>
                        <th scope="col" data-i18n="glossaryTableDestination">译文 (dst)</th>
                    </tr>
                    </thead>
                    <tbody id="glossaryTableBody">
                    <!-- Content will be populated by JS -->
                    </tbody>
                </table>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal" data-i18n="closeBtn">关闭
                </button>
            </div>
        </div>
    </div>
</div>


<!-- Bootstrap JS -->
<script src="/static/bootstrap.bundle.min.js" crossorigin="anonymous"></script>
<!-- Split.js for resizable panes -->
<script src="/static/split.min.js"></script>
<!-- [NEW] PapaParse for CSV parsing -->
<script src="/static/papaparse.min.js"></script>

<script type="module">
    // --- I18N Data ---
    // Initialize with a minimal fallback for critical error messages.
    // The full dataset will be loaded asynchronously in the init() function.
    let i18nData = {
        zh: {
            init_i18n_failed_alert: '加载界面翻译资源失败，请检查网络连接或联系管理员。',
            init_failed_alert: '初始化失败，无法连接到后端服务。请检查服务是否运行或刷新页面。'
        },
        en: {
            init_i18n_failed_alert: 'Failed to load interface translations. Please check your network connection or contact an administrator.',
            init_failed_alert: 'Initialization failed, could not connect to the backend service. Please ensure the service is running and refresh the page.'
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    /**
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        const i18nTargets = {
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            'data-i18n-title': (el, text) => {
                if (el.tagName === 'TITLE') {
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        // Update all elements with i18n attributes in a single pass
        Object.entries(i18nTargets).forEach(([attribute, updater]) => {
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        // Update dynamic UI parts that are built with JS
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        // Update language switcher active state
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        // Save preference
        saveToStorage('ui_language', lang);
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    function initI18n() {
        const langMenu = document.getElementById('languageMenu');
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        const savedLang = getFromStorage('ui_language') || (navigator.language.toLowerCase().startsWith('en') ? 'en' : 'zh');
        setLanguage(savedLang);
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    // --- End I18N ---

    const tooltipTriggerList = document.querySelectorAll('[data-bs-toggle="tooltip"]');
    const tooltipList = [...tooltipTriggerList].map(tooltipTriggerEl => new bootstrap.Tooltip(tooltipTriggerEl));

    // --- DOM Elements ---
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    // Workflow elements
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    const parsingSettingsContainer = document.getElementById('parsingSettingsContainer');
    const parsingSettingsTitle = document.getElementById('parsingSettingsTitle');
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    const txtSeparatorGroup = document.getElementById('txtSeparatorGroup');
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    const xlsxSettingsContainer = document.getElementById('xlsxSettingsContainer');
    const xlsxSettingsTitle = document.getElementById('xlsxSettingsTitle');
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    const xlsxSeparatorInput = document.getElementById('xlsx_separator');
    const xlsxTranslateRegionsTextarea = document.getElementById('xlsx_translate_regions');
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    const docxInsertModeSelect = document.getElementById('docx_insert_mode');
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    const srtInsertModeSelect = document.getElementById('srt_insert_mode');
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    const epubSettingsTitle = document.getElementById('epubSettingsTitle');
    const epubInsertModeSelect = document.getElementById('epub_insert_mode');
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    const htmlInsertModeSelect = document.getElementById('html_insert_mode');
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    const htmlSeparatorInput = document.getElementById('html_separator');
    const aiSettingsTitle = document.getElementById('aiSettingsTitle');
    const translationSettingsTitle = document.getElementById('translationSettingsTitle');
    const glossaryGenSettingsTitle = document.getElementById('glossaryGenSettingsTitle');


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    const convertEnginSelect = document.getElementById('convert_engine');
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    const mineruTokenInput = document.getElementById('mineru_token');
    const mineruModelVersionGroup = document.getElementById('mineruModelVersionGroup');
    const modelVersionSelect = document.getElementById('model_version');
    const formulaCheckbox = document.getElementById('formula_ocr');
    const codeCheckbox = document.getElementById('code_ocr');
    const codeOcrSwitch = document.getElementById('codeOcrSwitch');
    const formulaOcrSwitch = formulaCheckbox.parentElement;

    // AI elements
    const skipTranslationSwitch = document.getElementById('skipTranslationSwitch');
    const aiModelSettingsContainer = document.getElementById('aiModelSettingsContainer');
    const platformSelect = document.getElementById('platform_select');
    const apiHref = document.getElementById('api_href');
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    const baseUrlInput = document.getElementById('base_url');
    const apikeyInput = document.getElementById('api_key');
    const modelInput = document.getElementById('model_id');
    const mainBaseUrlDisplay = document.getElementById('main_base_url_display');

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    const toLangSelect = document.getElementById('to_lang');
    const customLangGroup = document.getElementById('customLangGroup');
    const customLangInput = document.getElementById('custom_to_lang');
    const customPromptTranslateArea = document.getElementById("custom_prompt");
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    const glossaryFilesInput = document.getElementById('glossary_files');
    const viewGlossaryBtn = document.getElementById('viewGlossaryBtn');
    const clearGlossaryBtn = document.getElementById('clearGlossaryBtn');
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    const glossaryModal = new bootstrap.Modal(glossaryModalEl);
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    // [MODIFIED] Glossary Generation elements
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    const taskCardTemplate = document.getElementById('taskCardTemplate');
    const downloadMenuTemplate = document.getElementById('downloadMenuTemplate');
    const previewOffcanvasEl = document.getElementById('previewOffcanvas');
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    const printFrameEl = document.getElementById('printFrame');

    // --- Global State ---
    let defaultParams = {};
    let glossaryData = {}; // [NEW] For glossary_dict
    const tasks = {}; // { cardId: { elements: {...}, state: {...}, intervals: {...} } }
    let isAdminMode = false;
    let previewSplitInstance = null;

    const apiHrefMap = {
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        "https://dashscope.aliyuncs.com/compatible-mode/v1": "https://bailian.console.aliyun.com/?tab=model#/api-key",
        "https://ark.cn-beijing.volces.com/api/v3": "https://console.volcengine.com/ark/region:ark+cn-beijing/apiKey?apikey=%7B%7D",
        "https://api.siliconflow.cn/v1": "https://cloud.siliconflow.cn/account/ak",
        "https://www.dmxapi.cn/v1": "https://www.dmxapi.cn/token",
        "https://www.dmxapi.com/v1": "https://www.dmxapi.com/console/token",
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        'epub': 'epub',
        'html': 'html',
        'htm': 'html',
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    // --- Utility Functions ---
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    // --- [NEW] Glossary Functions ---
    async function handleGlossaryFiles(event) {
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        let newGlossary = {};
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                                const dst = row.dst ? row.dst.trim() : null;
                                // Add only if src is valid and not already in the dictionary
                                if (src && dst && !newGlossary.hasOwnProperty(src)) {
                                    newGlossary[src] = dst;
                                }
                            });
                        }
                        resolve();
                    },
                    error: (err) => {
                        console.error(`Error parsing ${file.name}:`, err);
                        resolve(); // Resolve anyway to not block other files
                    }
                });
            });
        });

        await Promise.all(parsePromises);

        glossaryData = newGlossary;
        loadedCount = Object.keys(glossaryData).length;

        // Simple feedback
        const btnText = viewGlossaryBtn.querySelector('span');
        if (btnText) {
            btnText.textContent = `${getText('viewGlossaryBtn')} (${loadedCount})`;
        }
        console.log("Glossary loaded:", glossaryData);
    }

    function populateGlossaryModal() {
        glossaryTableBody.innerHTML = ''; // Clear previous content
        const terms = Object.entries(glossaryData);

        if (terms.length === 0) {
            const tr = document.createElement('tr');
            const td = document.createElement('td');
            td.colSpan = 2;
            td.textContent = getText('glossaryEmpty');
            td.className = 'text-center text-muted';
            tr.appendChild(td);
            glossaryTableBody.appendChild(tr);
        } else {
            terms.forEach(([src, dst]) => {
                const tr = document.createElement('tr');
                const tdSrc = document.createElement('td');
                const tdDst = document.createElement('td');
                tdSrc.textContent = src;
                tdDst.textContent = dst;
                tr.appendChild(tdSrc);
                tr.appendChild(tdDst);
                glossaryTableBody.appendChild(tr);
            });
        }
    }

    function clearGlossary() {
        // Reset the data
        glossaryData = {};
        // Clear the file input so the user can re-select the same file if they want
        glossaryFilesInput.value = '';
        // Update the view button text to remove the count
        const btnText = viewGlossaryBtn.querySelector('span');
        if (btnText) {
            btnText.textContent = getText('viewGlossaryBtn');
        }
        console.log("Glossary cleared.");
        // If the modal is open, re-populate it to show it's empty
        if (glossaryModalEl.classList.contains('show')) {
            populateGlossaryModal();
        }
    }


    // --- UI Update Functions based on Workflow ---
    // [REFACTORED] Configuration object to drive workflow UI updates
    const workflowConfigs = {
        'markdown_based': {
            container: parsingSettingsContainer,
            titleEl: parsingSettingsTitle,
            titleKey: 'parsingSettingsTitleText',
            icon: 'bi-file-earmark-binary'
        },
        'txt': {
            container: txtSettingsContainer,
            titleEl: txtSettingsTitle,
            titleKey: 'txtSettingsTitleText',
            icon: 'bi-filetype-txt',
            modeSelect: txtInsertModeSelect,
            separatorGroup: txtSeparatorGroup
        },
        'json': {
            container: jsonSettingsContainer,
            titleEl: jsonSettingsTitle,
            titleKey: 'jsonSettingsTitleText',
            icon: 'bi-signpost-split'
        },
        'xlsx': {
            container: xlsxSettingsContainer,
            titleEl: xlsxSettingsTitle,
            titleKey: 'xlsxSettingsTitleText',
            icon: 'bi-file-earmark-spreadsheet',
            modeSelect: xlsxInsertModeSelect,
            separatorGroup: xlsxSeparatorGroup
        },
        'docx': {
            container: docxSettingsContainer,
            titleEl: docxSettingsTitle,
            titleKey: 'docxSettingsTitleText',
            icon: 'bi-file-earmark-word',
            modeSelect: docxInsertModeSelect,
            separatorGroup: docxSeparatorGroup
        },
        'srt': {
            container: srtSettingsContainer,
            titleEl: srtSettingsTitle,
            titleKey: 'srtSettingsTitleText',
            icon: 'bi-file-text',
            modeSelect: srtInsertModeSelect,
            separatorGroup: srtSeparatorGroup
        },
        'epub': {
            container: epubSettingsContainer,
            titleEl: epubSettingsTitle,
            titleKey: 'epubSettingsTitleText',
            icon: 'bi-book',
            modeSelect: epubInsertModeSelect,
            separatorGroup: epubSeparatorGroup
        },
        'html': {
            container: htmlSettingsContainer,
            titleEl: htmlSettingsTitle,
            titleKey: 'htmlSettingsTitleText',
            icon: 'bi-filetype-html',
            modeSelect: htmlInsertModeSelect,
            separatorGroup: htmlSeparatorGroup
        }
    };

    /**
     * [REFACTORED] Updates the UI based on the selected workflow, using a configuration object.
     */
    function updateWorkflowUI() {
        const selectedWorkflow = workflowTypeSelect.value;
        const translations = i18nData[currentLang] || i18nData.zh;

        // Hide all workflow-specific containers
        Object.values(workflowConfigs).forEach(config => {
            if (config.container) config.container.style.display = 'none';
        });

        // --- Dynamic Numbering ---
        let currentStep = 1;
        const getStep = () => currentStep++;

        // 1. Workflow Selection (Always visible)
        document.querySelector('#headingZero button strong').innerHTML = `<i class="bi bi-diagram-3 me-2"></i>${getStep()}. ${translations.workflowTitle}`;

        // 2. Show and configure the selected workflow's panel
        const activeConfig = workflowConfigs[selectedWorkflow];
        if (activeConfig) {
            activeConfig.container.style.display = 'block';
            activeConfig.titleEl.innerHTML = `<i class="bi ${activeConfig.icon} me-2"></i>${getStep()}. ${translations[activeConfig.titleKey]}`;
            if (activeConfig.modeSelect) {
                updateSeparatorVisibility(activeConfig.modeSelect, activeConfig.separatorGroup);
            }
        }

        // 3. Renumber common sections
        aiSettingsTitle.innerHTML = `<i class="bi bi-robot me-2"></i>${getStep()}. ${translations.aiSettingsTitleText}`;
        if (translationSettingsAccordionItem.style.display !== 'none') {
            translationSettingsTitle.innerHTML = `<i class="bi bi-translate me-2"></i>${getStep()}. ${translations.translationSettingsTitleText}`;
        }
        glossaryGenSettingsTitle.innerHTML = `<i class="bi bi-journal-bookmark-fill me-2"></i>${getStep()}. ${translations.glossaryGenTitle}`;

        saveToStorage('translator_last_workflow', selectedWorkflow);
    }

    function updateSeparatorVisibility(modeSelect, separatorGroup) {
        const selectedMode = modeSelect.value;
        separatorGroup.style.display = (selectedMode === 'append' || selectedMode === 'prepend') ? 'block' : 'none';
    }

    /**
     * [REFACTORED] Generic function to update custom language input UI.
     * @param {HTMLSelectElement} selectEl - The language select element.
     * @param {HTMLElement} groupEl - The container for the custom input.
     * @param {HTMLInputElement} inputEl - The custom language text input.
     */
    function updateCustomLangUI(selectEl, groupEl, inputEl) {
        const isCustom = selectEl.value === 'custom';
        groupEl.style.display = isCustom ? 'block' : 'none';
        inputEl.required = isCustom;
    }


    // --- Other UI Update Functions ---
    function updateTranslationModeUI() {
        const skipTranslate = skipTranslationSwitch.checked;

        aiModelSettingsContainer.style.display = skipTranslate ? 'none' : 'block';
        translationSettingsAccordionItem.style.display = skipTranslate ? 'none' : 'block';

        // Make inputs not required when skipping translation
        baseUrlInput.required = !skipTranslate && platformSelect.value === 'custom';
        apikeyInput.required = !skipTranslate;
        modelInput.required = !skipTranslate;

        if (!skipTranslate) {
            mainPlatformUpdater();
        }
        updateWorkflowUI(); // Call to update numbering
    }

    /**
     * [REFACTORED] Creates a reusable function to manage platform selection UI.
     * @param {object} elements - An object containing the DOM elements for this UI section.
     * @param {string} storagePrefix - The prefix for localStorage keys.
     * @returns {function} An updater function to be called on change.
     */
    function createPlatformUIUpdater(elements, storagePrefix) {
        const {
            platformSelect,
            apikeyInput,
            modelInput,
            baseUrlGroup,
            baseUrlInput,
            apiHref: platformApiHref,
            baseUrlDisplay
        } = elements;
        return () => {
            const selectedPlatformValue = platformSelect.value;
            apikeyInput.value = getFromStorage(`${storagePrefix}_${selectedPlatformValue}_apikey`);
            modelInput.value = getFromStorage(`${storagePrefix}_${selectedPlatformValue}_model_id`);

            const isCustom = selectedPlatformValue === 'custom';
            baseUrlGroup.style.display = isCustom ? 'block' : 'none';
            baseUrlInput.required = isCustom && !skipTranslationSwitch.checked;
            baseUrlInput.value = isCustom ? getFromStorage(`${storagePrefix}_custom_base_url`) : selectedPlatformValue;

            if (baseUrlDisplay) {
                baseUrlDisplay.textContent = baseUrlInput.value;
            }

            if (platformApiHref) {
                if (!isCustom && apiHrefMap[baseUrlInput.value]) {
                    platformApiHref.href = apiHrefMap[baseUrlInput.value];
                    platformApiHref.style.display = 'inline-block';
                } else {
                    platformApiHref.style.display = 'none';
                }
            }
            saveToStorage(`${storagePrefix}_last_platform`, selectedPlatformValue);
        };
    }

    const mainPlatformUpdater = createPlatformUIUpdater({
        platformSelect, apikeyInput, modelInput, baseUrlGroup, baseUrlInput, apiHref,
        baseUrlDisplay: mainBaseUrlDisplay
    }, 'translator_platform');

    /**
     * Updates the visibility of parsing options (formula/code OCR) based on the selected engine.
     * This acts as a factory for UI configuration.
     * @param {string} engine The selected parsing engine ('identity', 'mineru', 'docling').
     */
    function updateParsingOptionsVisibility(engine) {
        const optionsConfig = {
            identity: {showFormula: false, showCode: false},
            mineru: {showFormula: true, showCode: false},
            docling: {showFormula: true, showCode: true}
        };

        // Default to hiding options if engine is not in config
        const config = optionsConfig[engine] || {showFormula: false, showCode: false};

        formulaOcrSwitch.style.display = config.showFormula ? 'block' : 'none';
        codeOcrSwitch.style.display = config.showCode ? 'block' : 'none';
    }


    function updateConvertEnginUI(isLanguageChange = false) {
        if (!isLanguageChange) {
            const selectedEngin = convertEnginSelect.value;
            const isMineru = selectedEngin === 'mineru';
            mineruTokenGroup.style.display = isMineru ? 'block' : 'none';
            mineruModelVersionGroup.style.display = isMineru ? 'block' : 'none';
            mineruTokenInput.required = isMineru;

            updateParsingOptionsVisibility(selectedEngin);

            if (isMineru) {
                mineruTokenInput.value = getFromStorage('translator_mineru_token');
            }
            saveToStorage('translator_convert_engin', selectedEngin);
        } else {
            // Repopulate options with translated text
            const savedValue = convertEnginSelect.value;
            Array.from(convertEnginSelect.options).forEach(option => {
                const keyMap = {
                    'identity': 'engineOptionIdentity',
                    'mineru': 'engineOptionMineru',
                    'docling': 'engineOptionDocling'
                };
                option.textContent = getText(keyMap[option.value] || option.value, option.value);
            });
            convertEnginSelect.value = savedValue;
        }
    }

    // [MODIFIED] Glossary Generation UI Functions
    function updateGlossaryGenUI() {
        const isEnabled = glossaryGenerateEnableSwitch.checked;
        glossaryAgentOptionsContainer.style.display = isEnabled ? 'block' : 'none';
        if (isEnabled) {
            updateGlossaryCustomConfigUI();
        }
    }

    function updateGlossaryCustomConfigUI() {
        const choice = document.querySelector('input[name="glossary_agent_config_choice"]:checked').value;
        glossaryAgentCustomConfigContainer.style.display = choice === 'custom' ? 'block' : 'none';
    }

    const glossaryAgentPlatformUpdater = createPlatformUIUpdater({
        platformSelect: glossaryAgentPlatformSelect,
        apikeyInput: glossaryAgentKeyInput,
        modelInput: glossaryAgentModelIdInput,
        baseUrlGroup: glossaryAgentBaseUrlGroup,
        baseUrlInput: glossaryAgentBaseUrlInput,
        baseUrlDisplay: glossaryBaseUrlDisplay
    }, 'glossary_agent_platform');


    function setupGlossaryAgentPlatformUI() {
        glossaryAgentPlatformSelect.innerHTML = platformSelect.innerHTML;
        glossaryAgentPlatformSelect.value = getFromStorage('glossary_agent_last_platform', 'https://api.openai.com/v1');
        glossaryAgentPlatformUpdater();
    }


    function createSliderUpdater(slider, display, resetBtn, key, params) {
        return () => {
            const value = slider.value;
            display.textContent = value;
            resetBtn.style.visibility = value !== String(params[key]) ? 'visible' : 'hidden';
            saveToStorage(key, value);
        };
    }

    function setupSlider(slider, display, resetBtn, key, params) {
        slider.value = getFromStorage(key, params[key]);
        const updater = createSliderUpdater(slider, display, resetBtn, key, params);
        slider.addEventListener('input', updater);
        resetBtn.addEventListener('click', () => {
            slider.value = params[key];
            updater();
        });
        updater(); // Initial call
    }

    function updateTaskPlaceholderVisibility() {
        noTaskPlaceholder.style.display = Object.keys(tasks).length === 0 ? 'block' : 'none';
    }

    function saveTaskIds() {
        if (isAdminMode) return;
        const submittedTaskIds = Object.values(tasks)
            .map(task => task.state.backendTaskId)
            .filter(id => id);
        saveToStorage('active_task_ids', JSON.stringify(submittedTaskIds));
    }

    // --- Task Card Management ---
    function createTaskCard(backendTaskId = null, restoreState = false) {
        const cardId = backendTaskId || generateCardId();
        if (tasks[cardId]) return; // Avoid duplicate cards

        const cardFragment = taskCardTemplate.content.cloneNode(true);
        const cardElement = cardFragment.querySelector('.task-card');
        cardElement.dataset.cardId = cardId;

        // Translate the new card immediately
        const translations = i18nData[currentLang] || i18nData.zh;
        cardElement.querySelectorAll('[data-i18n]').forEach(el => el.innerHTML = translations[el.dataset.i18n] || el.innerHTML);
        cardElement.querySelectorAll('[data-i18n-placeholder]').forEach(el => el.placeholder = translations[el.dataset.i18nPlaceholder] || el.placeholder);


        const elements = {
            card: cardElement,
            taskIdDisplay: cardElement.querySelector('.task-id-display'),
            removeBtn: cardElement.querySelector('.remove-task-btn'),
            fileInput: cardElement.querySelector('.file-input'),
            fileDropArea: cardElement.querySelector('.file-drop-area'),
            fileDropDefault: cardElement.querySelector('.file-drop-default'),
            fileDropSelected: cardElement.querySelector('.file-drop-selected'),
            fileNameDisplayWrapper: cardElement.querySelector('.file-name-display-wrapper'),
            fileNameDisplay: cardElement.querySelector('.file-name-display'),
            logArea: cardElement.querySelector('.log-area'),
            statusMessage: cardElement.querySelector('.status-message'),
            downloadButtons: cardElement.querySelector('.download-buttons'),
            downloadMenuContainer: cardElement.querySelector('.download-menu-container'),
            previewBtn: cardElement.querySelector('.preview-html-btn'),
            startBtn: cardElement.querySelector('.start-translate-btn'),
            // [NEW] Attachment elements
            attachmentBtnGroup: cardElement.querySelector('.attachment-btn-group'),
            attachmentMenuContainer: cardElement.querySelector('.attachment-menu-container'),
        };

        if (restoreState && backendTaskId) {
            elements.taskIdDisplay.innerHTML = `<code>${backendTaskId}</code>`;
        }

        tasks[cardId] = {
            elements,
            state: {
                backendTaskId: backendTaskId,
                isTranslating: false,
                file: null,
                htmlUrl: null,
                fileNameStem: null,
                isSubmitted: restoreState,
                downloads: {},
                attachment: {},
                workflow: null
            },
            intervals: {
                log: null,
                status: null
            }
        };

        addEventListenersToCard(cardId);

        taskContainer.prepend(cardElement);
        updateTaskPlaceholderVisibility();

        if (restoreState && backendTaskId) {
            pollStatus(backendTaskId, true);
        }
    }

    async function releaseTask(backendTaskId) {
        try {
            await fetch(`/service/release/${backendTaskId}`, {method: 'POST'});
            console.log(`[${backendTaskId}] Release request sent to backend.`);
        } catch (error) {
            console.error(`[${backendTaskId}] Failed to send release request:`, error);
        }
    }

    async function removeTask(cardId) {
        const task = tasks[cardId];
        if (!task) return;

        const backendTaskId = task.state.backendTaskId;
        if (backendTaskId) {
            stopPolling(backendTaskId);
            await releaseTask(backendTaskId);
        }

        task.elements.card.remove();
        delete tasks[cardId];

        saveTaskIds();
        updateTaskPlaceholderVisibility();
    }

    function addEventListenersToCard(cardId) {
        const {elements} = tasks[cardId];

        elements.card.addEventListener('click', () => {
            const task = tasks[cardId];
            if (task && task.state.workflow) {
                workflowTypeSelect.value = task.state.workflow;
                updateWorkflowUI();
            }
        });

        elements.removeBtn.addEventListener('click', () => removeTask(cardId));

        elements.fileDropArea.addEventListener('click', () => elements.fileInput.click());
        elements.fileInput.addEventListener('change', () => handleFileSelect(cardId));
        ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
            elements.fileDropArea.addEventListener(eventName, e => {
                e.preventDefault();
                e.stopPropagation();
            }, false);
        });
        ['dragenter', 'dragover'].forEach(eventName => {
            elements.fileDropArea.addEventListener(eventName, () => elements.fileDropArea.classList.add('drag-over'), false);
        });
        ['dragleave', 'drop'].forEach(eventName => {
            elements.fileDropArea.addEventListener(eventName, () => elements.fileDropArea.classList.remove('drag-over'), false);
        });
        elements.fileDropArea.addEventListener('drop', e => {
            if (e.dataTransfer.files.length > 0) {
                elements.fileInput.files = e.dataTransfer.files;
                handleFileSelect(cardId);
            }
        }, false);

        elements.startBtn.addEventListener('click', () => {
            if (tasks[cardId].state.isTranslating) {
                cancelTranslation(cardId);
            } else {
                startTranslation(cardId);
            }
        });
    }

    function handleFileSelect(cardId) {
        const {elements, state} = tasks[cardId];
        const file = elements.fileInput.files[0];
        if (file) {
            state.file = file;
            elements.fileNameDisplay.textContent = file.name;
            elements.fileNameDisplayWrapper.style.display = 'block';
            elements.fileDropArea.classList.add('file-selected');
            elements.fileDropDefault.style.display = 'none';
            elements.fileDropSelected.style.display = 'block';
            elements.fileDropArea.classList.remove('input-error');
            elements.fileNameDisplay.classList.remove('input-error-text');

            if (autoWorkflowSwitch.checked) {
                const fileExtension = file.name.split('.').pop().toLowerCase();
                const targetWorkflow = workflowExtensionMap[fileExtension] || defaultAutoWorkflow;
                workflowTypeSelect.value = targetWorkflow;
                updateWorkflowUI();
            }
        }
    }

    function buildGlossaryAgentConfig() {
        if (!glossaryGenerateEnableSwitch.checked) {
            return {config: null, isValid: true};
        }

        const agentChoice = document.querySelector('input[name="glossary_agent_config_choice"]:checked').value;

        if (agentChoice === 'same') {
            // When using the same config as the translator, pass null. The backend will handle it.
            return {config: null, isValid: true};
        }

        // Handle 'custom' config
        let isValid = true;
        const requiredAgentInputs = [glossaryAgentKeyInput, glossaryAgentModelIdInput];
        if (glossaryAgentPlatformSelect.value === 'custom') {
            requiredAgentInputs.push(glossaryAgentBaseUrlInput);
        }
        requiredAgentInputs.forEach(input => {
            input.classList.remove('is-invalid');
            if (!input.value.trim()) {
                input.classList.add('is-invalid');
                isValid = false;
            }
        });

        let glossaryTargetLanguage = glossaryAgentToLangSelect.value;
        if (glossaryTargetLanguage === 'custom') {
            glossaryTargetLanguage = glossaryAgentCustomLangInput.value.trim();
            glossaryAgentCustomLangInput.classList.remove('is-invalid');
            if (!glossaryTargetLanguage) {
                glossaryAgentCustomLangInput.classList.add('is-invalid');
                isValid = false;
            }
        }

        if (!isValid) {
            return {config: null, isValid: false};
        }

        // Build the agentConfig object with keys matching the backend Python model.
        const agentConfig = {
            base_url: glossaryAgentBaseUrlInput.value,
            api_key: glossaryAgentKeyInput.value,
            model_id: glossaryAgentModelIdInput.value,
            to_lang: glossaryTargetLanguage,
            temperature: parseFloat(glossaryAgentTemperatureSlider.value),
            max_concurrent: parseInt(glossaryAgentConcurrentSlider.value, 10),
            timeout: 2000,
            thinking: document.querySelector('input[name="glossary_agent_thinking"]:checked')?.value || 'default',
        };

        return {config: agentConfig, isValid: true};
    }


    function validateAndBuildPayload() {
        const skipTranslate = skipTranslationSwitch.checked;
        let isValid = true;

        // --- Common settings validation ---
        if (!skipTranslate) {
            const requiredCommonInputs = [apikeyInput, modelInput];
            if (platformSelect.value === 'custom') requiredCommonInputs.push(baseUrlInput);

            requiredCommonInputs.forEach(input => {
                input.classList.remove('is-invalid');
                if (!input.value.trim()) {
                    input.classList.add('is-invalid');
                    isValid = false;
                }
            });

            if (toLangSelect.value === 'custom') {
                customLangInput.classList.remove('is-invalid');
                if (!customLangInput.value.trim()) {
                    customLangInput.classList.add('is-invalid');
                    isValid = false;
                }
            }
        }

        // --- Base Payload Construction ---
        const targetLanguage = toLangSelect.value === 'custom' ? customLangInput.value.trim() : toLangSelect.value;
        const basePayload = {
            skip_translate: skipTranslate,
            base_url: baseUrlInput.value,
            api_key: apikeyInput.value,
            model_id: modelInput.value,
            to_lang: targetLanguage,
            thinking: document.querySelector('input[name="thinking"]:checked')?.value || 'disable',
            chunk_size: parseInt(chunkSizeSlider.value, 10),
            concurrent: parseInt(concurrentSlider.value, 10),
            temperature: parseFloat(temperatureSlider.value),
            custom_prompt: customPromptTranslateArea.value || null,
            glossary_dict: Object.keys(glossaryData).length > 0 ? glossaryData : null,
        };

        // --- Glossary Generation Config ---
        const glossaryResult = buildGlossaryAgentConfig();
        if (!glossaryResult.isValid) isValid = false;
        basePayload.glossary_generate_enable = glossaryGenerateEnableSwitch.checked;
        basePayload.glossary_agent_config = glossaryResult.config;

        // --- Workflow-specific validation and payload building ---
        const workflowType = workflowTypeSelect.value;
        let workflowPayload = {...basePayload, workflow_type: workflowType};

        switch (workflowType) {
            case 'markdown_based':
                if (convertEnginSelect.value === 'mineru' && !mineruTokenInput.value.trim()) {
                    mineruTokenInput.classList.add('is-invalid');
                    isValid = false;
                } else {
                    mineruTokenInput.classList.remove('is-invalid');
                }
                Object.assign(workflowPayload, {
                    convert_engine: convertEnginSelect.value || null,
                    mineru_token: mineruTokenInput.value || null,
                    formula_ocr: formulaCheckbox.checked,
                    code_ocr: codeCheckbox.checked,
                    model_version: modelVersionSelect.value,
                });
                break;
            case 'json':
                const jsonPaths = jsonPathsTextarea.value.trim().split('\n').map(p => p.trim()).filter(p => p);
                if (jsonPaths.length === 0) {
                    jsonPathsTextarea.classList.add('is-invalid');
                    isValid = false;
                } else {
                    jsonPathsTextarea.classList.remove('is-invalid');
                }
                workflowPayload.json_paths = jsonPaths;
                break;
            case 'xlsx':
                const translateRegions = xlsxTranslateRegionsTextarea.value.trim().split('\n').map(p => p.trim()).filter(p => p);
                Object.assign(workflowPayload, {
                    insert_mode: xlsxInsertModeSelect.value,
                    separator: xlsxSeparatorInput.value.replace(/\\n/g, '\n'),
                    translate_regions: translateRegions.length > 0 ? translateRegions : null
                });
                break;
            case 'txt':
            case 'docx':
            case 'srt':
            case 'epub':
            case 'html':
                const controls = {
                    txt: {mode: txtInsertModeSelect, sep: txtSeparatorInput},
                    docx: {mode: docxInsertModeSelect, sep: docxSeparatorInput},
                    srt: {mode: srtInsertModeSelect, sep: srtSeparatorInput},
                    epub: {mode: epubInsertModeSelect, sep: epubSeparatorInput},
                    html: {mode: htmlInsertModeSelect, sep: htmlSeparatorInput},
                }[workflowType];
                Object.assign(workflowPayload, {
                    insert_mode: controls.mode.value,
                    separator: controls.sep.value.replace(/\\n/g, '\n')
                });
                break;
        }

        return {payload: isValid ? workflowPayload : null, isValid};
    }

    async function startTranslation(cardId) {
        const {elements, state} = tasks[cardId];

        if (!state.file) {
            elements.statusMessage.textContent = getText('status_selectFileFirst');
            elements.statusMessage.className = 'status-message small text-danger';
            elements.fileDropArea.classList.add('input-error');
            return;
        }

        const {payload, isValid} = validateAndBuildPayload();
        state.workflow = workflowTypeSelect.value; // Store the workflow type for the task

        if (!isValid) {
            elements.statusMessage.textContent = getText('status_fillRequired');
            elements.statusMessage.className = 'status-message small text-danger';
            // Find the first invalid input and scroll to it
            const firstInvalid = document.querySelector('.is-invalid, .input-error');
            if (firstInvalid) {
                firstInvalid.scrollIntoView({behavior: 'smooth', block: 'center'});
            }
            return;
        }

        // --- Release old task and start new one ---
        const oldBackendTaskId = state.backendTaskId;
        if (oldBackendTaskId) {
            await releaseTask(oldBackendTaskId);
            state.backendTaskId = null;
        }

        state.isTranslating = true;
        elements.startBtn.disabled = true;
        elements.startBtn.innerHTML = `<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span> <span data-i18n="btn_initializing">${getText('btn_initializing')}</span>`;
        elements.logArea.innerHTML = '';
        elements.statusMessage.textContent = getText('status_encodingAndSubmitting');
        elements.statusMessage.className = 'status-message small text-muted';
        elements.downloadButtons.style.display = 'none';
        elements.card.querySelector('.progress')?.remove(); // Make sure no old progress bar exists

        // Temporarily add a spinner next to the status message
        elements.statusMessage.insertAdjacentHTML('afterend', '<div class="spinner-border spinner-border-sm ms-2" role="status" id="temp-spinner-' + cardId + '"><span class="visually-hidden">Loading...</span></div>');


        try {
            const fileContentBase64 = await fileToBase64(state.file);
            const finalRequest = {
                file_name: state.file.name,
                file_content: fileContentBase64,
                payload: payload
            };

            const response = await fetch('/service/translate', {
                method: 'POST',
                headers: {'Content-Type': 'application/json'},
                body: JSON.stringify(finalRequest)
            });
            const result = await response.json();

            if (response.ok && result.task_started) {
                const backendTaskId = result.task_id;
                state.backendTaskId = backendTaskId;
                state.isSubmitted = true;
                elements.taskIdDisplay.innerHTML = `<code>${backendTaskId}</code>`;
                elements.taskIdDisplay.classList.remove('task-id-placeholder');

                saveTaskIds();

                elements.statusMessage.textContent = result.message || getText('status_requestOk');
                elements.statusMessage.className = 'status-message small text-info';
                elements.startBtn.innerHTML = `<i class="bi bi-stop-circle-fill me-1"></i><span data-i18n="btn_cancelTranslation">${getText('btn_cancelTranslation')}</span>`;
                elements.startBtn.classList.replace('btn-primary', 'btn-danger');
                elements.startBtn.disabled = false;

                startPolling(backendTaskId);
            } else {
                let errorMessage = result.detail || result.message || `${getText('status_requestFail')} (${response.status})`;
                if (typeof errorMessage === 'object') errorMessage = JSON.stringify(errorMessage);
                throw new Error(errorMessage);
            }
        } catch (error) {
            state.isSubmitted = false;
            console.error('Request failed:', error);
            elements.statusMessage.textContent = `${getText('status_initFail')}: ${error.message}`;
            elements.statusMessage.className = 'status-message small text-danger';
            elements.startBtn.innerHTML = `<i class="bi bi-play-fill me-1"></i><span data-i8n="taskCardStartBtn">${getText('taskCardStartBtn')}</span>`;
            elements.startBtn.classList.replace('btn-danger', 'btn-primary');
            elements.startBtn.disabled = false;
            document.getElementById('temp-spinner-' + cardId)?.remove();
            state.isTranslating = false;
        }
    }


    async function cancelTranslation(cardId) {
        const task = tasks[cardId];
        if (!task || !task.state.backendTaskId) return;

        const {elements} = task;
        const backendTaskId = task.state.backendTaskId;

        elements.startBtn.disabled = true;
        elements.startBtn.innerHTML = `<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span> <span data-i18n="status_cancelling">${getText('status_cancelling')}</span>`;

        try {
            const response = await fetch(`/service/cancel/${backendTaskId}`, {method: 'POST'});
            const result = await response.json();

            if (response.ok && result.cancelled) {
                elements.statusMessage.textContent = result.message || getText('status_cancelSent');
                elements.statusMessage.className = 'status-message small text-warning';
            } else {
                throw new Error(result.message || getText('status_cancelFail'));
            }
        } catch (error) {
            elements.statusMessage.textContent = `${getText('status_cancelFail')}: ${error.message}`;
            elements.statusMessage.className = 'status-message small text-danger';
            elements.startBtn.disabled = false;
            elements.startBtn.innerHTML = `<i class="bi bi-stop-circle-fill me-1"></i><span data-i18n="btn_cancelTranslation">${getText('btn_cancelTranslation')}</span>`;
        }
    }

    // --- Polling ---
    function startPolling(backendTaskId) {
        stopPolling(backendTaskId);
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) return;

        card.intervals.log = setInterval(() => pollLogs(backendTaskId), 2000);
        card.intervals.status = setInterval(() => pollStatus(backendTaskId), 1500);
        pollLogs(backendTaskId);
        pollStatus(backendTaskId);
    }

    function stopPolling(backendTaskId) {
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) return;

        const {intervals} = card;
        if (intervals.log) clearInterval(intervals.log);
        if (intervals.status) clearInterval(intervals.status);
        intervals.log = null;
        intervals.status = null;
    }

    async function pollLogs(backendTaskId) {
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) return;
        const {elements} = card;

        try {
            const response = await fetch(`/service/logs/${backendTaskId}`);
            if (!response.ok) return;
            const data = await response.json();
            if (data.logs && data.logs.length > 0) {
                elements.logArea.innerHTML += data.logs.map(log => log.replace(/</g, "<").replace(/>/g, ">") + '<br>').join('');
                elements.logArea.scrollTop = elements.logArea.scrollHeight;
            }
        } catch (error) {
            console.warn(`[${backendTaskId}] Error polling logs:`, error);
        }
    }

    async function pollStatus(backendTaskId, isRestore = false) {
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) {
            if (isRestore) {
                console.warn(`Restored task ${backendTaskId} not found in UI, removing from storage.`);
                const savedTaskIds = JSON.parse(getFromStorage('active_task_ids', '[]'));
                const newIds = savedTaskIds.filter(id => id !== backendTaskId);
                saveToStorage('active_task_ids', JSON.stringify(newIds));
            }
            return;
        }
        const {elements, state} = card;
        const cardId = elements.card.dataset.cardId;

        try {
            const response = await fetch(`/service/status/${backendTaskId}`);
            if (!response.ok) {
                if (response.status === 404 && isRestore) {
                    console.warn(`Task ${backendTaskId} not found on server (404). Removing from UI.`);
                    await removeTask(cardId);
                }
                return;
            }
            const status = await response.json();

            if (status.original_filename && (!state.file || isRestore)) {
                elements.fileNameDisplay.textContent = status.original_filename;
                elements.fileNameDisplayWrapper.style.display = 'block';
            }

            elements.statusMessage.textContent = status.status_message || getText('status_gettingStatus');
            elements.statusMessage.className = `status-message small ${status.error_flag ? 'text-danger' : 'text-info'}`;

            if (!status.is_processing) {
                pollLogs(backendTaskId); // Get final logs
                stopPolling(backendTaskId);
                state.isTranslating = false;
                elements.startBtn.disabled = false;
                elements.startBtn.innerHTML = `<i class="bi bi-arrow-clockwise me-1"></i><span data-i18n="btn_reTranslate">${getText('btn_reTranslate')}</span>`;
                elements.startBtn.classList.replace('btn-danger', 'btn-primary');
                document.getElementById('temp-spinner-' + cardId)?.remove();

                if (status.download_ready && !status.error_flag) {
                    elements.statusMessage.className = 'status-message small text-success';
                    updateResultButtons(cardId, status);
                } else {
                    elements.downloadButtons.style.display = 'none';
                }
            } else {
                state.isTranslating = true;
                elements.startBtn.innerHTML = `<i class="bi bi-stop-circle-fill me-1"></i><span data-i18n="btn_cancelTranslation">${getText('btn_cancelTranslation')}</span>`;
                elements.startBtn.classList.replace('btn-primary', 'btn-danger');
                elements.startBtn.disabled = false;
                elements.downloadButtons.style.display = 'none';

                if (isRestore && !card.intervals.status) {
                    startPolling(backendTaskId);
                }
            }

        } catch (error) {
            console.error(`[${backendTaskId}] Error polling status:`, error);
            elements.statusMessage.textContent = getText('status_updateError');
            elements.statusMessage.className = 'status-message small text-danger';
        }
    }

    // --- Download and Preview ---
    function populateDownloadMenu(menuElement, downloads, cardId) {
        menuElement.innerHTML = ''; // Clear existing items
        if (!downloadMenuTemplate) return false;

        const content = downloadMenuTemplate.content.cloneNode(true);
        // Translate the template before using
        content.querySelectorAll('[data-i18n]').forEach(el => el.innerHTML = getText(el.dataset.i18n));
        let anyLinkAdded = false;

        const setupLink = (selector, key) => {
            const li = content.querySelector(selector);
            if (li && downloads[key]) {
                li.querySelector('a').href = downloads[key];
                menuElement.appendChild(li);
                anyLinkAdded = true;
            }
        };

        setupLink('.download-item-md', 'markdown');
        setupLink('.download-item-md-zip', 'markdown_zip');
        setupLink('.download-item-txt', 'txt');
        setupLink('.download-item-json', 'json');
        setupLink('.download-item-docx', 'docx');
        setupLink('.download-item-xlsx', 'xlsx');
        setupLink('.download-item-csv', 'csv');
        setupLink('.download-item-srt', 'srt');
        setupLink('.download-item-epub', 'epub');
        setupLink('.download-item-html', 'html');

        // Special handler for PDF, which is generated on the fly
        const pdfLi = content.querySelector('.download-item-pdf');
        if (pdfLi && downloads.html) {
            const pdfLink = pdfLi.querySelector('a');
            pdfLink.href = '#';
            pdfLink.onclick = (e) => {
                e.preventDefault();
                downloadPdf(cardId);
            };
            menuElement.appendChild(pdfLi);
            anyLinkAdded = true;
        }

        return anyLinkAdded;
    }


    function updateResultButtons(cardId, status) {
        const {elements, state} = tasks[cardId];
        const {downloads, attachment} = status;
        state.downloads = downloads;
        state.attachment = attachment;

        const {
            previewBtn,
            downloadButtons,
            downloadMenuContainer,
            attachmentBtnGroup,
            attachmentMenuContainer
        } = elements;

        // Reset visibility of individual components first
        previewBtn.style.display = 'none';
        attachmentBtnGroup.style.display = 'none';
        let anyDownloadAvailable = false;
        let anyAttachmentAvailable = false;
        let anyPreviewAvailable = false;

        // Handle preview
        if (downloads && downloads.html) {
            state.htmlUrl = downloads.html;
            state.fileNameStem = status.original_filename_stem;
            previewBtn.style.display = 'inline-block';
            previewBtn.onclick = () => setupPreview(cardId);
            anyPreviewAvailable = true;
        }

        // Handle standard downloads
        if (downloads) {
            anyDownloadAvailable = populateDownloadMenu(downloadMenuContainer, downloads, cardId);
        }

        // Handle attachments
        if (attachment && Object.keys(attachment).length > 0) {
            attachmentMenuContainer.innerHTML = ''; // Clear previous items
            Object.entries(attachment).forEach(([identifier, url]) => {
                const li = document.createElement('li');
                const a = document.createElement('a');
                a.className = 'dropdown-item';
                a.href = url;
                // A simple icon and the identifier text
                a.innerHTML = `<i class="bi bi-file-earmark-arrow-down me-2"></i>${identifier}`;
                li.appendChild(a);
                attachmentMenuContainer.appendChild(li);
            });
            attachmentBtnGroup.style.display = 'inline-block';
            anyAttachmentAvailable = true;
        }


        // Set visibility of the main container
        if (anyPreviewAvailable || anyDownloadAvailable || anyAttachmentAvailable) {
            downloadButtons.style.display = 'flex'; // Use flex for proper alignment
        } else {
            downloadButtons.style.display = 'none';
        }
    }


    function setupPreview(cardId) {
        const {state} = tasks[cardId];
        if (!state.htmlUrl) return;

        const existingOriginalContent = originalPreviewPane.querySelector('iframe, pre, p');
        if (existingOriginalContent) existingOriginalContent.remove();
        translatedPreviewFrame.src = 'about:blank';
        translatedPreviewFrame.srcdoc = getText('preview_loading');

        setPreviewDisplayMode('bilingual');
        previewOffcanvas.show();

        const menu = document.getElementById('previewDownloadMenu');
        populateDownloadMenu(menu, state.downloads, cardId);


        if (state.file) {
            const fileType = state.file.type;
            const fileExtension = state.file.name.split('.').pop().toLowerCase();
            const textLikeExtensions = ['md', 'json', 'xml', 'log', 'py', 'js', 'css', 'java', 'c', 'cpp', 'h', 'hpp', 'cs', 'rb', 'php', 'swift', 'kt', 'go', 'rs', 'ts', 'txt', 'srt'];

            if (fileType.startsWith('text/') || textLikeExtensions.includes(fileExtension)) {
                const pre = document.createElement('pre');
                state.file.text()
                    .then(text => pre.textContent = text)
                    .catch(() => pre.textContent = getText('preview_cantReadOriginal'));
                originalPreviewPane.appendChild(pre);
            } else if (['application/pdf', 'text/html'].includes(fileType) || ['html', 'htm'].includes(fileExtension)) {
                const iframe = document.createElement('iframe');
                iframe.src = URL.createObjectURL(state.file);
                originalPreviewPane.appendChild(iframe);
            } else {
                const p = document.createElement('p');
                p.className = 'p-3 text-muted';
                p.textContent = `${getText('preview_cantPreviewType')} (${fileType || 'unknown: ' + fileExtension}).`;
                originalPreviewPane.appendChild(p);
            }
        } else {
            const p = document.createElement('p');
            p.className = 'p-3 text-muted';
            p.textContent = getText('preview_noOriginalCache');
            originalPreviewPane.appendChild(p);
        }

        fetch(state.htmlUrl)
            .then(resp => resp.ok ? resp.text() : Promise.reject(`HTTP error ${resp.status}`))
            .then(html => {
                translatedPreviewFrame.srcdoc = html;
            })
            .catch(err => {
                console.error('Preview fetch failed:', err);
                translatedPreviewFrame.srcdoc = `${getText('preview_loadFailed')}<p>${err.message}</p>`;
            });
    }

    function downloadPdf(cardId) {
        const {elements, state} = tasks[cardId];
        if (!state.htmlUrl) return;

        const toast = new bootstrap.Toast(document.createElement('div'), {
            autohide: true,
            delay: 3000
        });
        toast._element.classList.add('toast', 'position-fixed', 'top-0', 'end-0', 'p-3', 'bg-info', 'text-white');
        toast._element.innerHTML = `<div class="toast-body">${getText('pdf_preparing')}</div>`;
        document.body.appendChild(toast._element);
        toast.show();

        fetch(state.htmlUrl)
            .then(resp => resp.ok ? resp.text() : Promise.reject(`HTTP error ${resp.status}`))
            .then(html => {
                printFrameEl.onload = () => {
                    setTimeout(() => {
                        try {
                            printFrameEl.contentWindow.focus();
                            printFrameEl.contentWindow.print();
                        } catch (err) {
                            alert(getText('pdf_print_failed'));
                        } finally {
                            printFrameEl.onload = null;
                            printFrameEl.srcdoc = ''; // Clear content
                        }
                    }, 500);
                };
                printFrameEl.srcdoc = html;
            })
            .catch(err => {
                alert(getText('pdf_fetch_failed'));
            });
    }

    function setPreviewDisplayMode(mode) {
        if (previewSplitInstance) {
            previewSplitInstance.destroy();
            previewSplitInstance = null;
        }

        const isMobileView = window.innerWidth < 992;
        const splitContainer = document.querySelector('.preview-split-container');
        originalPreviewContainer.style.display = 'flex';
        translatedPreviewContainer.style.display = 'flex';
        [originalPreviewContainer, translatedPreviewContainer].forEach(el => {
            el.style.width = '';
            el.style.height = '';
        });
        splitContainer.style.flexDirection = isMobileView ? 'column' : 'row';

        if (mode === 'bilingual') {
            previewOffcanvasLabel.textContent = getText('preview_bilingual');

            if (isMobileView) {
                previewSplitInstance = Split(['#originalPreviewContainer', '#translatedPreviewContainer'], {
                    direction: 'vertical', sizes: [50, 50], minSize: 150, gutterSize: 10, cursor: 'row-resize',
                });
            } else {
                previewSplitInstance = Split(['#originalPreviewContainer', '#translatedPreviewContainer'], {
                    direction: 'horizontal', sizes: [50, 50], minSize: 200, gutterSize: 10, cursor: 'col-resize',
                });
            }

            setBilingualViewBtn.classList.add('btn-primary');
            setBilingualViewBtn.classList.remove('btn-outline-primary');
            setTranslatedOnlyViewBtn.classList.remove('btn-primary');
            setTranslatedOnlyViewBtn.classList.add('btn-outline-primary');

        } else { // mode === 'translatedOnly'
            previewOffcanvasLabel.textContent = getText('preview_translatedOnly');
            originalPreviewContainer.style.display = 'none';

            if (isMobileView) {
                translatedPreviewContainer.style.height = '100%';
            } else {
                translatedPreviewContainer.style.width = '100%';
            }

            setTranslatedOnlyViewBtn.classList.add('btn-primary');
            setTranslatedOnlyViewBtn.classList.remove('btn-outline-primary');
            setBilingualViewBtn.classList.remove('btn-primary');
            setBilingualViewBtn.classList.add('btn-outline-primary');
        }
    }

    // --- Password Toggle Functionality ---
    function setupPasswordToggle(button) {
        const targetId = button.dataset.target;
        const passwordInput = document.getElementById(targetId);
        const icon = button.querySelector('i');

        button.addEventListener('click', () => {
            if (passwordInput.type === 'password') {
                passwordInput.type = 'text';
                icon.classList.remove('bi-eye-slash');
                icon.classList.add('bi-eye');
            } else {
                passwordInput.type = 'password';
                icon.classList.remove('bi-eye');
                icon.classList.add('bi-eye-slash');
            }
        });
    }


    // --- Initialization ---

    /**
     * [REFACTORED] Restores user settings from localStorage using a configuration array.
     */
    function restoreSettings(settingsConfig) {
        settingsConfig.forEach(setting => {
            const savedValue = getFromStorage(setting.key, setting.defaultValue);
            if (setting.type === 'boolean') {
                setting.element.checked = savedValue === 'true';
            } else if (setting.type === 'radio') {
                const radioToSelect = document.querySelector(`${setting.selector}[value="${savedValue}"]`);
                if (radioToSelect) radioToSelect.checked = true;
            } else {
                setting.element.value = savedValue;
            }
        });
    }

    /**
     * [REFACTORED] Sets up event listeners for saving settings using a configuration array.
     */
    function setupEventListeners(listenersConfig) {
        listenersConfig.forEach(config => {
            const handler = config.handler || ((e) => {
                const value = e.target.type === 'checkbox' ? e.target.checked : e.target.value;
                if (config.saveKey) saveToStorage(config.saveKey, value);
                if (config.postHook) config.postHook();
            });
            config.element.addEventListener(config.event, handler);
        });
    }


    async function init() {
        // Step 1: Fetch i18n data
        try {
            const response = await fetch("/static/i18nData.json");
            if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
            i18nData = await response.json();
        } catch (error) {
            console.error("Fatal: Failed to load i18n data.", error);
            currentLang = getFromStorage('ui_language') || (navigator.language.toLowerCase().startsWith('en') ? 'en' : 'zh');
            alert(getText('init_i18n_failed_alert'));
            return;
        }

        // Step 2: Fetch other backend data
        isAdminMode = window.location.pathname.includes('/admin');
        try {
            const [metaRes, enginRes, paramsRes] = await Promise.all([
                fetch("/service/meta"), fetch('/service/engin-list'), fetch("/service/default-params")
            ]);
            if (!metaRes.ok || !enginRes.ok || !paramsRes.ok) throw new Error("Failed to fetch initial data.");

            const meta = await metaRes.json();
            versionDisplay.textContent = `v${meta.version}`;

            const enginList = await enginRes.json();
            convertEnginSelect.innerHTML = '<option value="identity"></option>'; // Default option ，选项显示"已经是markdown格式"
            enginList.forEach(engin => {
                const option = document.createElement('option');
                option.value = engin;
                convertEnginSelect.appendChild(option);
            });

            defaultParams = await paramsRes.json();
        } catch (error) {
            console.error("Initialization failed:", error);
            alert(getText('init_failed_alert'));
            return;
        }

        // Step 3: Initialize i18n system
        initI18n();

        // Step 4: [REFACTORED] Restore user settings and setup event listeners using config
        const settingsToRestore = [
            {element: workflowTypeSelect, key: 'translator_last_workflow', defaultValue: 'markdown_based'},
            {
                element: autoWorkflowSwitch,
                key: 'translator_auto_workflow_enabled',
                defaultValue: 'true',
                type: 'boolean'
            },
            {element: txtInsertModeSelect, key: 'translator_txt_insert_mode', defaultValue: 'replace'},
            {element: txtSeparatorInput, key: 'translator_txt_separator', defaultValue: '\\n'},
            {element: xlsxInsertModeSelect, key: 'translator_xlsx_insert_mode', defaultValue: 'replace'},
            {element: xlsxSeparatorInput, key: 'translator_xlsx_separator', defaultValue: '\\n'},
            {element: xlsxTranslateRegionsTextarea, key: 'translator_xlsx_translate_regions', defaultValue: ''},
            {element: docxInsertModeSelect, key: 'translator_docx_insert_mode', defaultValue: 'replace'},
            {element: docxSeparatorInput, key: 'translator_docx_separator', defaultValue: '\\n'},
            {element: srtInsertModeSelect, key: 'translator_srt_insert_mode', defaultValue: 'replace'},
            {element: srtSeparatorInput, key: 'translator_srt_separator', defaultValue: '\\n'},
            {element: epubInsertModeSelect, key: 'translator_epub_insert_mode', defaultValue: 'replace'},
            {element: epubSeparatorInput, key: 'translator_epub_separator', defaultValue: '\\n'},
            {element: htmlInsertModeSelect, key: 'translator_html_insert_mode', defaultValue: 'replace'},
            {element: htmlSeparatorInput, key: 'translator_html_separator', defaultValue: ' '},
            {element: jsonPathsTextarea, key: 'translator_json_paths', defaultValue: ''},
            {element: skipTranslationSwitch, key: 'translator_skip_translate', defaultValue: 'false', type: 'boolean'},
            {element: platformSelect, key: 'translator_last_platform', defaultValue: 'https://api.openai.com/v1'},
            {element: convertEnginSelect, key: 'translator_convert_engin', defaultValue: 'mineru'},
            {element: modelVersionSelect, key: 'translator_model_version', defaultValue: 'vlm'},
            {element: toLangSelect, key: 'translator_to_lang', defaultValue: '中文'},
            {element: customLangInput, key: 'translator_custom_to_lang', defaultValue: ''},
            {element: formulaCheckbox, key: 'translator_formula_ocr', defaultValue: 'true', type: 'boolean'},
            {element: codeCheckbox, key: 'translator_code_ocr', defaultValue: 'true', type: 'boolean'},
            {element: customPromptTranslateArea, key: 'custom_prompt', defaultValue: ''},
            {
                type: 'radio',
                selector: '#thinkingModeBtnGroup input[name="thinking"]',
                key: 'translator_thinking_mode',
                defaultValue: 'default'
            },
            // Glossary Gen Settings
            {
                element: glossaryGenerateEnableSwitch,
                key: 'glossary_generate_enable',
                defaultValue: 'false',
                type: 'boolean'
            },
            {
                type: 'radio',
                selector: 'input[name="glossary_agent_config_choice"]',
                key: 'glossary_agent_config_choice',
                defaultValue: 'same'
            },
            {element: glossaryAgentToLangSelect, key: 'glossary_agent_to_lang', defaultValue: '中文'},
            {element: glossaryAgentCustomLangInput, key: 'glossary_agent_custom_to_lang', defaultValue: ''},
            {
                type: 'radio',
                selector: 'input[name="glossary_agent_thinking"]',
                key: 'glossary_agent_thinking_mode',
                defaultValue: 'default'
            }
        ];
        restoreSettings(settingsToRestore);


        // Initial UI updates
        updateWorkflowUI();
        mainPlatformUpdater();
        updateConvertEnginUI();
        updateCustomLangUI(toLangSelect, customLangGroup, customLangInput);
        updateTranslationModeUI();

        setupGlossaryAgentPlatformUI();
        updateGlossaryGenUI();
        updateCustomLangUI(glossaryAgentToLangSelect, glossaryAgentCustomLangGroup, glossaryAgentCustomLangInput);

        // Setup sliders
        setupSlider(chunkSizeSlider, chunkSizeDisplay, chunkSizeReset, 'chunk_size', defaultParams);
        setupSlider(concurrentSlider, concurrentDisplay, concurrentReset, 'concurrent', defaultParams);
        setupSlider(temperatureSlider, temperatureDisplay, temperatureReset, 'temperature', defaultParams);
        const agentDefaultParams = { // Agent sliders default to main config defaults
            'glossary_agent_temperature': defaultParams.temperature,
            'glossary_agent_chunk_size': defaultParams.chunk_size,
            'glossary_agent_concurrent': defaultParams.concurrent
        };
        setupSlider(glossaryAgentTemperatureSlider, glossaryAgentTemperatureDisplay, glossaryAgentTemperatureReset, 'glossary_agent_temperature', agentDefaultParams);
        setupSlider(glossaryAgentChunkSizeSlider, glossaryAgentChunkSizeDisplay, glossaryAgentChunkSizeReset, 'glossary_agent_chunk_size', agentDefaultParams);
        setupSlider(glossaryAgentConcurrentSlider, glossaryAgentConcurrentDisplay, glossaryAgentConcurrentReset, 'glossary_agent_concurrent', agentDefaultParams);

        // Setup event listeners
        const eventListenersConfig = [
            // Main settings with save logic and UI updates
            {element: workflowTypeSelect, event: 'change', handler: updateWorkflowUI},
            {element: autoWorkflowSwitch, event: 'change', saveKey: 'translator_auto_workflow_enabled'},
            {
                element: txtInsertModeSelect,
                event: 'change',
                saveKey: 'translator_txt_insert_mode',
                postHook: () => updateSeparatorVisibility(txtInsertModeSelect, txtSeparatorGroup)
            },
            {
                element: xlsxInsertModeSelect,
                event: 'change',
                saveKey: 'translator_xlsx_insert_mode',
                postHook: () => updateSeparatorVisibility(xlsxInsertModeSelect, xlsxSeparatorGroup)
            },
            {
                element: docxInsertModeSelect,
                event: 'change',
                saveKey: 'translator_docx_insert_mode',
                postHook: () => updateSeparatorVisibility(docxInsertModeSelect, docxSeparatorGroup)
            },
            {
                element: srtInsertModeSelect,
                event: 'change',
                saveKey: 'translator_srt_insert_mode',
                postHook: () => updateSeparatorVisibility(srtInsertModeSelect, srtSeparatorGroup)
            },
            {
                element: epubInsertModeSelect,
                event: 'change',
                saveKey: 'translator_epub_insert_mode',
                postHook: () => updateSeparatorVisibility(epubInsertModeSelect, epubSeparatorGroup)
            },
            {
                element: htmlInsertModeSelect,
                event: 'change',
                saveKey: 'translator_html_insert_mode',
                postHook: () => updateSeparatorVisibility(htmlInsertModeSelect, htmlSeparatorGroup)
            },
            {
                element: skipTranslationSwitch,
                event: 'change',
                saveKey: 'translator_skip_translate',
                postHook: updateTranslationModeUI
            },
            {element: platformSelect, event: 'change', handler: mainPlatformUpdater},
            {element: convertEnginSelect, event: 'change', handler: () => updateConvertEnginUI(false)},
            {
                element: toLangSelect,
                event: 'change',
                saveKey: 'translator_to_lang',
                postHook: () => updateCustomLangUI(toLangSelect, customLangGroup, customLangInput)
            },
            // Simple value savers
            {element: txtSeparatorInput, event: 'input', saveKey: 'translator_txt_separator'},
            {element: xlsxSeparatorInput, event: 'input', saveKey: 'translator_xlsx_separator'},
            {element: xlsxTranslateRegionsTextarea, event: 'input', saveKey: 'translator_xlsx_translate_regions'},
            {element: docxSeparatorInput, event: 'input', saveKey: 'translator_docx_separator'},
            {element: srtSeparatorInput, event: 'input', saveKey: 'translator_srt_separator'},
            {element: epubSeparatorInput, event: 'input', saveKey: 'translator_epub_separator'},
            {element: htmlSeparatorInput, event: 'input', saveKey: 'translator_html_separator'},
            {element: jsonPathsTextarea, event: 'input', saveKey: 'translator_json_paths'},
            {
                element: apikeyInput,
                event: 'input',
                handler: e => saveToStorage(`translator_platform_${platformSelect.value}_apikey`, e.target.value)
            },
            {
                element: modelInput,
                event: 'input',
                handler: e => saveToStorage(`translator_platform_${platformSelect.value}_model_id`, e.target.value)
            },
            {
                element: baseUrlInput, event: 'input', handler: e => {
                    const newValue = e.target.value;
                    // 新增下面这行来更新显示区域
                    mainBaseUrlDisplay.textContent = newValue;
                    if (platformSelect.value === 'custom') {
                        saveToStorage('translator_platform_custom_base_url', newValue);
                    }
                }
            },
            {element: mineruTokenInput, event: 'input', saveKey: 'translator_mineru_token'},
            {element: modelVersionSelect, event: 'change', saveKey: 'translator_model_version'},
            {element: customLangInput, event: 'input', saveKey: 'translator_custom_to_lang'},
            {element: formulaCheckbox, event: 'change', saveKey: 'translator_formula_ocr'},
            {element: codeCheckbox, event: 'change', saveKey: 'translator_code_ocr'},
            {element: customPromptTranslateArea, event: 'input', saveKey: 'custom_prompt'},
            // Glossary Gen event listeners
            {
                element: glossaryGenerateEnableSwitch,
                event: 'change',
                saveKey: 'glossary_generate_enable',
                postHook: updateGlossaryGenUI
            },
            {element: glossaryAgentPlatformSelect, event: 'change', handler: glossaryAgentPlatformUpdater},
            {
                element: glossaryAgentBaseUrlInput, event: 'input', handler: e => {
                    const newValue = e.target.value;
                    // 新增下面这行来更新术语表的显示区域
                    glossaryBaseUrlDisplay.textContent = newValue;
                    if (glossaryAgentPlatformSelect.value === 'custom') {
                        saveToStorage('glossary_agent_platform_custom_baseurl', newValue);
                    }
                }
            },
            {
                element: glossaryAgentKeyInput,
                event: 'input',
                handler: e => saveToStorage(`glossary_agent_platform_${glossaryAgentPlatformSelect.value}_apikey`, e.target.value)
            },
            {
                element: glossaryAgentModelIdInput,
                event: 'input',
                handler: e => saveToStorage(`glossary_agent_platform_${glossaryAgentPlatformSelect.value}_model_id`, e.target.value)
            },
            {
                element: glossaryAgentToLangSelect,
                event: 'change',
                saveKey: 'glossary_agent_to_lang',
                postHook: () => updateCustomLangUI(glossaryAgentToLangSelect, glossaryAgentCustomLangGroup, glossaryAgentCustomLangInput)
            },
            {element: glossaryAgentCustomLangInput, event: 'input', saveKey: 'glossary_agent_custom_to_lang'},
            // Others
            {element: glossaryFilesInput, event: 'change', handler: handleGlossaryFiles},
            {
                element: viewGlossaryBtn, event: 'click', handler: () => {
                    populateGlossaryModal();
                    glossaryModal.show();
                }
            },
            {element: clearGlossaryBtn, event: 'click', handler: clearGlossary},
            {element: addNewTaskBtn, event: 'click', handler: () => createTaskCard()},
            {element: setBilingualViewBtn, event: 'click', handler: () => setPreviewDisplayMode('bilingual')},
            {element: setTranslatedOnlyViewBtn, event: 'click', handler: () => setPreviewDisplayMode('translatedOnly')},
        ];
        setupEventListeners(eventListenersConfig);

        // Setup radio button groups separately as they are collections
        document.querySelectorAll('#thinkingModeBtnGroup input[name="thinking"]').forEach(radio => radio.addEventListener('change', e => saveToStorage('translator_thinking_mode', e.target.value)));
        glossaryAgentConfigChoiceRadios.forEach(radio => radio.addEventListener('change', e => {
            saveToStorage('glossary_agent_config_choice', e.target.value);
            updateGlossaryCustomConfigUI();
        }));
        glossaryAgentThinkingRadios.forEach(radio => radio.addEventListener('change', e => saveToStorage('glossary_agent_thinking_mode', e.target.value)));

        document.querySelectorAll('.toggle-password').forEach(setupPasswordToggle);

        // Restore tasks
        if (isAdminMode) {
            document.title = "DocuTranslate - Admin Panel";
            try {
                const response = await fetch('/service/task-list');
                if (!response.ok) throw new Error(`Failed to fetch task list: ${response.statusText}`);
                const allTaskIds = await response.json();
                if (allTaskIds && allTaskIds.length > 0) {
                    allTaskIds.reverse().forEach(taskId => createTaskCard(taskId, true));
                }
            } catch (error) {
                console.error("Admin mode: Failed to load task list.", error);
                alert(getText('admin_tasklist_failed'));
            }
            updateTaskPlaceholderVisibility();
        } else {
            const savedTaskIds = JSON.parse(getFromStorage('active_task_ids', '[]'));
            if (savedTaskIds.length > 0) {
                savedTaskIds.forEach(taskId => createTaskCard(taskId, true));
            } else {
                createTaskCard();
            }
        }

        // Add resize listener for preview
        window.addEventListener('resize', () => {
            if (previewOffcanvasEl.classList.contains('show')) {
                const currentMode = originalPreviewContainer.style.display !== 'none' ? 'bilingual' : 'translatedOnly';
                setPreviewDisplayMode(currentMode);
            }
        });
    }

    // --- Theme switcher logic ---
    const getPreferredTheme = () => {
        const storedTheme = localStorage.getItem('theme');
        if (storedTheme) {
            return storedTheme;
        }
        return 'auto';
    };
    const setTheme = theme => {
        if (theme === 'auto') {
            document.documentElement.setAttribute('data-bs-theme', window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
        } else {
            document.documentElement.setAttribute('data-bs-theme', theme);
        }
    };
    const showActiveTheme = (theme) => {
        document.querySelectorAll('[data-bs-theme-value]').forEach(element => {
            element.classList.remove('active');
        });
        const activeButton = document.querySelector(`[data-bs-theme-value="${theme}"]`);
        if (activeButton) {
            activeButton.classList.add('active');
        }
    };
    const preferredTheme = getPreferredTheme();
    setTheme(preferredTheme);
    showActiveTheme(preferredTheme);
    window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
        const storedTheme = localStorage.getItem('theme');
        if (storedTheme === 'auto' || !storedTheme) {
            setTheme('auto');
        }
    });
    document.querySelectorAll('[data-bs-theme-value]').forEach(toggle => {
        toggle.addEventListener('click', () => {
            const theme = toggle.getAttribute('data-bs-theme-value');
            localStorage.setItem('theme', theme);
            setTheme(theme);
            showActiveTheme(theme);
        });
    });

    // --- Start the application ---
    document.addEventListener('DOMContentLoaded', init);
</script>
</body>
</html>
\ No newline at end of file
+<!DOCTYPE html>
<html lang="zh-CN" data-bs-theme="auto">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title data-i18n-title="pageTitle">DocuTranslate - 交互式文档翻译</title>
    <link rel="icon" href="/static/favicon.ico" type="image/x-icon">
    <!-- Bootstrap CSS -->
    <link href="/static/bootstrap.css" rel="stylesheet" crossorigin="anonymous">
    <!-- Bootstrap Icons -->
    <link rel="stylesheet" href="/static/bootstrap-icons.css">

    <style>
        body {
            background-color: var(--bs-body-bg);
        }

        button:focus {
            outline: none !important;
            box-shadow: none !important;
        }

        .main-container {
            display: flex;
            flex-direction: column;
            height: 100vh;
            padding-top: 1rem;
            padding-bottom: 1rem;
        }

        .settings-panel {
            height: calc(100vh - 2rem);
            overflow-y: auto;
            padding-right: 15px; /* for scrollbar */
        }

        .task-area {
            height: calc(100vh - 2rem);
            overflow-y: auto;
        }

        .task-card {
            transition: all 0.3s ease-in-out;
        }


        .task-id-placeholder {
            color: var(--bs-secondary-color);
            font-style: italic;
        }

        .log-area {
            height: 150px;
            background-color: var(--bs-tertiary-bg);
            border: 1px solid var(--bs-border-color);
            border-radius: .375rem;
            font-family: monospace;
            font-size: 0.8rem;
            padding: 10px;
            overflow-y: auto;
            white-space: pre-wrap;
            word-break: break-all;
        }

        .file-drop-area {
            border: 2px dashed var(--bs-secondary-bg);
            border-radius: .375rem;
            padding: 2rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease-in-out;
            background-color: var(--bs-body-bg);
        }

        .file-drop-area.drag-over {
            border-color: var(--bs-primary);
            background-color: var(--bs-secondary-bg);
        }

        .file-drop-area.file-selected {
            border-style: solid;
            border-color: var(--bs-success);
            background-color: var(--bs-success-bg-subtle);
        }

        .file-drop-area.input-error {
            border-color: var(--bs-danger);
        }

        .file-name-display.input-error-text {
            color: var(--bs-danger);
            font-weight: bold;
        }

        #printFrame, #translatedPreviewFrame {
            border: none;
            width: 100%;
        }

        #previewOffcanvas {
            --bs-offcanvas-width: 95vw;
            max-width: 1600px;
        }

        .preview-split-container {
            display: flex;
            flex-direction: row;
            height: 90%;
        }

        .preview-pane-wrapper {
            display: flex;
            flex-direction: column;
            overflow: hidden; /* Important for split.js */
        }

        .preview-pane-wrapper h6 {
            flex-shrink: 0;
            padding: 0.25rem;
        }

        .preview-pane-wrapper .preview-pane {
            flex-grow: 1; /* Make the inner pane grow */
            border: 1px solid var(--bs-border-color);
            border-radius: .375rem;
            overflow: auto;
        }

        .gutter {
            background-color: var(--bs-tertiary-bg);
            background-repeat: no-repeat;
            background-position: 50%;
        }

        .gutter.gutter-horizontal {
            cursor: col-resize;
            border-left: 1px solid var(--bs-border-color);
            border-right: 1px solid var(--bs-border-color);
        }

        .gutter.gutter-vertical {
            cursor: row-resize;
            border-top: 1px solid var(--bs-border-color);
            border-bottom: 1px solid var(--bs-border-color);
        }


        .preview-pane iframe, .preview-pane pre {
            width: 100%;
            height: 95%;
            border: none;
            margin: 0;
            padding: 0;
            overflow: auto;
            background-color: var(--bs-body-bg);
        }

        .slider-reset-btn {
            visibility: hidden;
        }

        .bottom-left-controls {
            position: fixed;
            bottom: 1rem;
            left: 1rem;
            z-index: 1050;
            display: flex;
            gap: 0.5rem;
        }

        .project-info p {
            letter-spacing: 0.8px;
            line-height: 1.6;
        }

        @media (max-width: 991.98px) {
            .main-container {
                height: auto;
                padding-bottom: 6rem;
            }

            .settings-panel, .task-area {
                height: auto;
                overflow-y: visible;
            }

            .settings-panel {
                padding-right: 0;
                margin-bottom: 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .task-card .col-md-7 {
                margin-top: 1.5rem;
            }

            #previewOffcanvas {
                --bs-offcanvas-width: 100vw;
            }
        }
    </style>
</head>
<body>

<div class="container-fluid main-container">
    <div class="row gx-4">
        <!-- Left: Settings Panel -->
        <div class="col-lg-4">
            <div class="settings-panel">
                <div class="d-flex justify-content-between align-items-center mb-3">
                    <div class="d-flex align-items-center">
                        <h4 class="mb-0 me-3 fw-bold">DocuTranslate</h4>
                        <div class="btn-group">
                            <button type="button" class="btn btn-sm btn-outline-info" data-bs-toggle="modal"
                                    data-bs-target="#tutorialModal">
                                <i class="bi bi-question-circle-fill me-1"></i><span data-i18n="tutorialBtn">教程</span>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-warning" data-bs-toggle="modal"
                                    data-bs-target="#contributorsModal">
                                <i class="bi bi-people-fill me-1"></i><span
                                    data-i18n="projectContributeBtn">项目协作</span>
                            </button>
                        </div>
                    </div>
                </div>

                <form id="translateForm">
                    <div class="accordion" id="settingsAccordion">

                        <!-- Workflow Selection -->
                        <div class="accordion-item" id="workflowSettingsContainer">
                            <h2 class="accordion-header" id="headingZero">
                                <button class="accordion-button" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseZero" aria-expanded="true"
                                        aria-controls="collapseZero">
                                    <strong><i class="bi bi-diagram-3 me-2"></i><span
                                            data-i18n="workflowTitle">选择工作流</span></strong>
                                </button>
                            </h2>
                            <div id="collapseZero" class="accordion-collapse collapse show"
                                 aria-labelledby="headingZero">
                                <div class="accordion-body">
                                    <select class="form-select" id="workflowTypeSelect">
                                        <option value="markdown_based" data-i18n="workflowOptionMarkdown">转Markdown再翻译
                                            (.pdf/.md/.png等)
                                        </option>
                                        <option value="txt" data-i18n="workflowOptionTxt">纯文本翻译 (.txt)</option>
                                        <option value="json" data-i18n="workflowOptionJson">JSON翻译 (.json)</option>
                                        <option value="docx" data-i18n="workflowOptionDocx">DOCX翻译 (.docx)</option>
                                        <option value="xlsx" data-i18n="workflowOptionXlsx">XLSX翻译 (.xlsx/.csv)
                                        </option>
                                        <option value="srt" data-i18n="workflowOptionSrt">SRT字幕翻译 (.srt)</option>
                                        <option value="epub" data-i18n="workflowOptionEpub">EPUB翻译 (.epub)</option>
                                        <option value="html" data-i18n="workflowOptionHtml">HTML翻译 (.html)</option>
                                    </select>
                                    <div class="form-check form-switch mt-2">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="autoWorkflowSwitch">
                                        <label class="form-check-label" for="autoWorkflowSwitch"
                                               data-i18n="autoWorkflowLabel">自动选择工作流</label>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] TXT Settings Container -->
                        <div class="accordion-item" id="txtSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingTxt">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseTxt" aria-expanded="false"
                                        aria-controls="collapseTxt">
                                    <strong id="txtSettingsTitle"><i
                                            class="bi bi-filetype-txt me-2"></i>TXT翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseTxt" class="accordion-collapse collapse" aria-labelledby="headingTxt">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="txt_insert_mode" class="form-label"
                                               data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="txt_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpTxt">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="txtSeparatorGroup" style="display: none;">
                                        <label for="txt_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="txt_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] DOCX Settings Container -->
                        <div class="accordion-item" id="docxSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingDocx">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseDocx" aria-expanded="false"
                                        aria-controls="collapseDocx">
                                    <strong id="docxSettingsTitle"><i class="bi bi-file-earmark-word me-2"></i>DOCX翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseDocx" class="accordion-collapse collapse" aria-labelledby="headingDocx">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="docx_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="docx_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpDocx">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="docxSeparatorGroup" style="display: none;">
                                        <label for="docx_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="docx_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholder"
                                               placeholder="例如: \n---翻译---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- XLSX Settings Container -->
                        <div class="accordion-item" id="xlsxSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingXlsx">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseXlsx" aria-expanded="false"
                                        aria-controls="collapseXlsx">
                                    <strong id="xlsxSettingsTitle"><i
                                            class="bi bi-file-earmark-spreadsheet me-2"></i>XLSX翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseXlsx" class="accordion-collapse collapse" aria-labelledby="headingXlsx">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="xlsx_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="xlsx_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpXlsx">
                                            选择如何将翻译后的文本插入到单元格中。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="xlsxSeparatorGroup" style="display: none;">
                                        <label for="xlsx_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="xlsx_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                    <div class="mb-3">
                                        <label for="xlsx_translate_regions" class="form-label"
                                               data-i18n="xlsxTranslateRegionsLabel">翻译区域 (可选)</label>
                                        <textarea class="form-control" id="xlsx_translate_regions"
                                                  name="translate_regions" rows="3"
                                                  data-i18n-placeholder="xlsxTranslateRegionsPlaceholder"
                                                  placeholder="每行一个区域, 例如:Sheet1!A1:B10（不指定表名则对所有表生效）"></textarea>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] SRT Settings Container -->
                        <div class="accordion-item" id="srtSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingSrt">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseSrt" aria-expanded="false"
                                        aria-controls="collapseSrt">
                                    <strong id="srtSettingsTitle"><i
                                            class="bi bi-file-text me-2"></i>SRT翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseSrt" class="accordion-collapse collapse" aria-labelledby="headingSrt">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="srt_insert_mode" class="form-label"
                                               data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="srt_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpSrt">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="srtSeparatorGroup" style="display: none;">
                                        <label for="srt_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="srt_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] EPUB Settings Container -->
                        <div class="accordion-item" id="epubSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingEpub">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseEpub" aria-expanded="false"
                                        aria-controls="collapseEpub">
                                    <strong id="epubSettingsTitle"><i class="bi bi-book me-2"></i>EPUB翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseEpub" class="accordion-collapse collapse" aria-labelledby="headingEpub">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="epub_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="epub_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpEpub">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="epubSeparatorGroup" style="display: none;">
                                        <label for="epub_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="epub_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: \n---\n">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [NEW] HTML Settings Container -->
                        <div class="accordion-item" id="htmlSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingHtml">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseHtml" aria-expanded="false"
                                        aria-controls="collapseHtml">
                                    <strong id="htmlSettingsTitle"><i class="bi bi-filetype-html me-2"></i>HTML翻译选项</strong>
                                </button>
                            </h2>
                            <div id="collapseHtml" class="accordion-collapse collapse" aria-labelledby="headingHtml">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="html_insert_mode" class="form-label" data-i18n="insertModeLabel">插入模式</label>
                                        <select class="form-select" id="html_insert_mode" name="insert_mode">
                                            <option value="replace" data-i18n="insertModeReplace">替换原文 (Replace)
                                            </option>
                                            <option value="append" data-i18n="insertModeAppend">附加到原文后 (Append)
                                            </option>
                                            <option value="prepend" data-i18n="insertModePrepend">附加到原文前
                                                (Prepend)
                                            </option>
                                        </select>
                                        <div class="form-text" data-i18n="insertModeHelpHtml">
                                            选择如何将翻译后的文本插入。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="htmlSeparatorGroup" style="display: none;">
                                        <label for="html_separator" class="form-label"
                                               data-i18n="separatorLabel">分隔符</label>
                                        <input type="text" class="form-control" id="html_separator" name="separator"
                                               data-i18n-placeholder="separatorPlaceholderSimple"
                                               placeholder="例如: <!-- translated -->">
                                        <div class="form-text" data-i18n="separatorHelp">
                                            当插入模式为附加或前置时，用于分隔原文和译文的字符。<code>\n</code> 代表换行。
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>


                        <!-- JSON Paths Settings Container -->
                        <div class="accordion-item" id="jsonSettingsContainer" style="display: none;">
                            <h2 class="accordion-header" id="headingJson">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseJson" aria-expanded="false"
                                        aria-controls="collapseJson">
                                    <strong id="jsonSettingsTitle"><i class="bi bi-signpost-split me-2"></i>JSON路径配置</strong>
                                </button>
                            </h2>
                            <div id="collapseJson" class="accordion-collapse collapse" aria-labelledby="headingJson">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="json_paths_textarea" class="form-label" data-i18n="jsonPathLabel">需要翻译的JSON路径</label>
                                        <textarea class="form-control" id="json_paths_textarea" name="json_paths"
                                                  rows="4" required
                                                  data-i18n-placeholder="jsonPathPlaceholder" placeholder="每行一个路径, 例如:
$.name
$.*"></textarea>
                                        <div class="form-text" data-i18n="jsonPathHelp">
                                            采用<code>jsonpath-ng</code>的路径选择语法，每一行表示一个json路径。
                                            将翻译路径匹配对象内的所有字符串
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- Parsing Engine Settings Container -->
                        <div class="accordion-item" id="parsingSettingsContainer">
                            <h2 class="accordion-header" id="headingOne">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne">
                                    <strong id="parsingSettingsTitle"><i class="bi bi-file-earmark-binary me-2"></i>解析配置</strong>
                                </button>
                            </h2>
                            <div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="convert_engine" class="form-label" data-i18n="parsingEngineLabel">解析引擎</label>
                                        <select class="form-select" id="convert_engine" name="convert_engine">
                                            <!-- Options will be populated by JS -->
                                        </select>
                                        <div class="form-text" data-i18n="parsingEngineHelp">
                                            如果上传的文件本身是.md格式，此项可不选。
                                        </div>
                                    </div>
                                    <div class="mb-3" id="mineruTokenGroup">
                                        <label for="mineru_token" class="form-label">
                                            Mineru Token
                                            <a href="https://mineru.net/apiManage/token" target="_blank" class="ms-1"
                                               data-i18n-title="getMineruTokenTitle" title="获取Mineru Token"><i
                                                    class="bi bi-box-arrow-up-right"></i></a>
                                        </label>
                                        <div class="input-group">
                                            <input type="password" class="form-control" id="mineru_token"
                                                   name="mineru_token" data-i18n-placeholder="mineruTokenPlaceholder"
                                                   placeholder="使用Mineru引擎时需要">
                                            <button class="btn btn-outline-secondary toggle-password" type="button"
                                                    data-target="mineru_token">
                                                <i class="bi bi-eye-slash"></i>
                                            </button>
                                        </div>
                                    </div>
                                    <!-- NEW: Mineru Model Version -->
                                    <div class="mb-3" id="mineruModelVersionGroup">
                                        <label for="model_version" class="form-label" data-i18n="modelVersionLabel">Mineru
                                            模型版本</label>
                                        <select class="form-select" id="model_version" name="model_version">
                                            <option value="vlm" data-i18n="modelVersionVlm">VLM</option>
                                            <option value="pipeline" data-i18n="modelVersionPipline">Pipeline</option>
                                        </select>
                                        <div class="form-text" data-i18n="modelVersionHelp">
                                            mineru VLM是更新的内测模型。
                                        </div>
                                    </div>
                                    <div class="form-check form-switch mb-2">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="formula_ocr"
                                               name="formula_ocr" checked>
                                        <label class="form-check-label" for="formula_ocr" data-i18n="formulaOcrLabel">公式识别</label>
                                    </div>
                                    <div class="form-check form-switch mb-2" id="codeOcrSwitch">
                                        <input class="form-check-input" type="checkbox" role="switch" id="code_ocr"
                                               name="code_ocr" checked>
                                        <label class="form-check-label" for="code_ocr"
                                               data-i18n="codeOcrLabel">代码识别</label>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- AI Settings -->
                        <div class="accordion-item">
                            <h2 class="accordion-header" id="headingTwo">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
                                    <strong id="aiSettingsTitle"><i class="bi bi-robot me-2"></i>翻译模型</strong>
                                </button>
                            </h2>
                            <div id="collapseTwo" class="accordion-collapse collapse" aria-labelledby="headingTwo">
                                <div class="accordion-body">
                                    <!-- [MODIFIED] Translation Mode to Checkbox -->
                                    <div class="form-check form-switch mb-3">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="skipTranslationSwitch">
                                        <label class="form-check-label" for="skipTranslationSwitch"
                                               data-i18n="skipTranslationLabel">跳过翻译</label>
                                    </div>

                                    <!-- Wrapper for AI Model settings -->
                                    <div id="aiModelSettingsContainer">
                                        <div>
                                            <label for="platform_select" class="form-label"
                                                   data-i18n="platformLabel">选择平台</label>
                                            <select class="form-select" id="platform_select">
                                                <option value="custom" data-i18n="platformCustom">自定义接口</option>
                                                <option value="https://api.openai.com/v1">OpenAI</option>
                                                <option value="https://generativelanguage.googleapis.com/v1beta/openai/">
                                                    Gemini
                                                </option>
                                                <option value="https://api.deepseek.com/v1">DeepSeek</option>
                                                <option value="https://dashscope.aliyuncs.com/compatible-mode/v1">
                                                    阿里云百炼(DashScope)
                                                </option>
                                                <option value="https://ark.cn-beijing.volces.com/api/v3">火山引擎(volces)
                                                </option>
                                                <option value="https://api.siliconflow.cn/v1">硅基流动(siliconflow CN)
                                                </option>
                                                <option value="https://open.bigmodel.cn/api/paas/v4">智谱AI(bigmodel
                                                    CN)
                                                </option>
                                                <option value="https://www.dmxapi.cn/v1">DMXAPI(CN)</option>
                                                <option value="https://www.dmxapi.com/v1">DMXAPI(Global)</option>
                                                <option value="https://openrouter.ai/api/v1">OpenRouter</option>
                                                <option value="http://127.0.0.1:1234/v1">LM Studio</option>
                                                <option value="http://127.0.0.1:11434/v1">Ollama</option>
                                            </select>
                                        </div>
                                        <div class="form-text mb-3" id="main_base_url_display_container">
                                            Base URL: <code id="main_base_url_display"></code>
                                        </div>
                                        <div class="mb-3" id="baseUrlGroup">
                                            <label for="base_url" class="form-label" data-i18n="baseUrlLabel">API 地址
                                                (Base
                                                URL)</label>
                                            <input type="url" class="form-control" id="base_url" name="base_url"
                                                   required
                                                   data-i18n-placeholder="baseUrlPlaceholder"
                                                   placeholder="OpenAi兼容地址">
                                        </div>
                                        <div class="mb-3">
                                            <label for="api_key" class="form-label">
                                                API Key
                                                <a href="#" target="_blank" class="ms-1" id="api_href"
                                                   data-i18n-title="getApiKeyTitle" title="获取API Key"><i
                                                        class="bi bi-box-arrow-up-right"></i></a>
                                            </label>
                                            <div class="input-group">
                                                <input type="password" class="form-control" id="api_key" name="api_key"
                                                       data-i18n-placeholder="apiKeyPlaceholderOptional"
                                                       placeholder="请输入您的API Key（可选）">
                                                <button class="btn btn-outline-secondary toggle-password" type="button"
                                                        data-target="api_key">
                                                    <i class="bi bi-eye-slash"></i>
                                                </button>
                                            </div>
                                        </div>
                                        <div class="mb-3">
                                            <label for="model_id" class="form-label"
                                                   data-i18n="modelIdLabel">选择模型</label>
                                            <input type="text" class="form-control" id="model_id" name="model_id"
                                                   required
                                                   data-i18n-placeholder="modelIdPlaceholder"
                                                   placeholder="例如: gpt-4o, glm-4">
                                        </div>

                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- Translation Settings -->
                        <div class="accordion-item" id="translationSettingsAccordionItem">
                            <h2 class="accordion-header" id="headingThree">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseThree" aria-expanded="false"
                                        aria-controls="collapseThree">
                                    <strong id="translationSettingsTitle"><i
                                            class="bi bi-translate me-2"></i>翻译配置</strong>
                                </button>
                            </h2>
                            <div id="collapseThree" class="accordion-collapse collapse" aria-labelledby="headingThree">
                                <div class="accordion-body">
                                    <div class="mb-3">
                                        <label for="to_lang" class="form-label"
                                               data-i18n="targetLanguageLabel">目标语言</label>
                                        <select class="form-select" id="to_lang" name="to_lang">
                                            <option value="中文">中文(简体中文)</option>
                                            <option value="英文">英文(English)</option>
                                            <option value="西班牙文">西班牙文(Español)</option>
                                            <option value="法文">法文(Français)</option>
                                            <option value="德文">德文(Deutsch)</option>
                                            <option value="日文">日文(日本語)</option>
                                            <option value="韩文">韩文(한국어)</option>
                                            <option value="俄文">俄文(Русский)</option>
                                            <option value="葡萄牙文">葡萄牙文(Português)</option>
                                            <option value="阿拉伯文">阿拉伯文(العَرَبِيَّة)</option>
                                            <option value="越南文">越南文(tiếng Việt)</option>
                                            <option value="custom" data-i18n="targetLanguageCustom">其它 (自定义)
                                            </option>
                                        </select>
                                        <div class="mt-2" id="customLangGroup" style="display: none;">
                                            <input type="text" class="form-control" id="custom_to_lang"
                                                   name="custom_to_lang" data-i18n-placeholder="customLangPlaceholder"
                                                   placeholder="请输入目标语言, 例如: Italian">
                                        </div>
                                    </div>
                                    <div class="mb-3">
                                        <label class="form-label" data-i18n="thinkingModeLabel">思考模式</label><i
                                            class="bi bi-question-circle ms-2 tooltip-icon"
                                            data-bs-toggle="tooltip"
                                            data-bs-placement="top"
                                            data-i18n-title="thinkingModeTooltip"
                                            data-bs-title="设置混合推理模型的思考模式，目前支持智谱平台的glm-4.5系列、阿里云的qwen3系列、火山引擎的Doubao-Seed-1.6系列等,建议关闭">
                                    </i>
                                        <div id="thinkingModeBtnGroup" class="btn-group w-100" role="group"
                                             aria-label="Thinking Mode Toggle">
                                            <input type="radio" class="btn-check" name="thinking" id="thinkingEnable"
                                                   value="enable" autocomplete="off">
                                            <label class="btn btn-outline-primary" for="thinkingEnable"
                                                   data-i18n="thinkingModeEnable">启用</label>

                                            <input type="radio" class="btn-check" name="thinking" id="thinkingDisable"
                                                   value="disable" autocomplete="off">
                                            <label class="btn btn-outline-primary" for="thinkingDisable"
                                                   data-i18n="thinkingModeDisable">禁用(推荐)</label>

                                            <input type="radio" class="btn-check" name="thinking" id="thinkingDefault"
                                                   value="default" autocomplete="off">
                                            <label class="btn btn-outline-primary" for="thinkingDefault"
                                                   data-i18n="thinkingModeDefault">默认</label>
                                        </div>
                                    </div>
                                    <div class="mb-3">
                                        <label for="custom_prompt" class="form-label" data-i18n="customPromptLabel">自定义Prompt</label>
                                        <textarea class="form-control" id="custom_prompt"
                                                  name="custom_prompt" rows="3"
                                                  data-i18n-placeholder="customPromptPlaceholder"
                                                  placeholder="可选，如“人名保持原文不翻译”"></textarea>
                                    </div>
                                    <!-- MOVED FROM ADVANCED SETTINGS -->
                                    <div class="mb-3 border-top pt-3">
                                        <label for="chunk-size-slider"
                                               class="form-label d-flex justify-content-between">
                                            <span><span data-i18n="chunkSizeLabel">分块大小</span>: <span
                                                    id="chunk-size-display"></span></span>
                                            <button type="button"
                                                    class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                    id="chunk-size-reset" data-i18n="resetBtn">重置
                                            </button>
                                        </label>
                                        <input type="range" class="form-range" min="1000" max="8000" step="100"
                                               id="chunk-size-slider" name="chunk_size">
                                    </div>
                                    <div class="mb-3">
                                        <label for="concurrent-slider"
                                               class="form-label d-flex justify-content-between">
                                            <span><span data-i18n="concurrentLabel">并发数</span>: <span
                                                    id="concurrent-display"></span></span>
                                            <button type="button"
                                                    class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                    id="concurrent-reset" data-i18n="resetBtn">重置
                                            </button>
                                        </label>
                                        <input type="range" class="form-range" min="1" max="60" step="1"
                                               id="concurrent-slider" name="concurrent">
                                    </div>
                                    <div class="mb-3">
                                        <label for="temperature-slider"
                                               class="form-label d-flex justify-content-between">
                                            <span>Temperature: <span id="temperature-display"></span></span>
                                            <button type="button"
                                                    class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                    id="temperature-reset" data-i18n="resetBtn">重置
                                            </button>
                                        </label>
                                        <input type="range" class="form-range" min="0" max="2" step="0.1"
                                               id="temperature-slider" name="temperature">
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- [MODIFIED] Glossary Generation Settings -->
                        <div class="accordion-item" id="glossaryGenerationContainer">
                            <h2 class="accordion-header" id="headingGlossaryGen">
                                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse"
                                        data-bs-target="#collapseGlossaryGen" aria-expanded="false"
                                        aria-controls="collapseGlossaryGen">
                                    <strong id="glossaryGenSettingsTitle"><i
                                            class="bi bi-journal-bookmark me-2"></i><span data-i18n="glossaryGenTitle">术语表</span></strong>
                                </button>
                            </h2>
                            <div id="collapseGlossaryGen" class="accordion-collapse collapse"
                                 aria-labelledby="headingGlossaryGen">
                                <div class="accordion-body">
                                    <!-- [MOVED] Glossary Section -->
                                    <div class="mb-3">
                                        <label for="glossary_files" class="form-label" data-i18n="glossaryLabel">术语表
                                            (可选)</label>
                                        <input class="form-control" type="file" id="glossary_files" multiple
                                               accept=".csv">
                                        <div class="form-text" data-i18n="glossaryHelp">
                                            选择一个或多个CSV文件。文件需包含'src'和'dst'两列标题，分别代表原文和译文。
                                        </div>
                                        <div class="btn-group mt-2" role="group">
                                            <button type="button" class="btn btn-sm btn-outline-info"
                                                    id="viewGlossaryBtn">
                                                <i class="bi bi-card-list me-1"></i><span data-i18n="viewGlossaryBtn">查看术语表</span>
                                            </button>
                                            <button type="button" class="btn btn-sm btn-outline-danger"
                                                    id="clearGlossaryBtn">
                                                <i class="bi bi-trash me-1"></i><span
                                                    data-i18n="clearGlossaryBtn">清空</span>
                                            </button>
                                        </div>
                                    </div>

                                    <!-- Enable/Disable Switch -->
                                    <div class="form-check form-switch mb-3 border-top pt-3">
                                        <input class="form-check-input" type="checkbox" role="switch"
                                               id="glossary_generate_enable" name="glossary_generate_enable">
                                        <label class="form-check-label" for="glossary_generate_enable"
                                               data-i18n="glossaryGenEnableLabel">自动生成术语表</label>
                                    </div>

                                    <!-- Agent Config Options (conditionally displayed) -->
                                    <div id="glossaryAgentOptionsContainer" style="display: none;">
                                        <div class="mb-3">
                                            <label class="form-label"
                                                   data-i18n="glossaryGenConfigLabel">生成术语表配置</label>
                                            <div class="btn-group w-100" role="group">
                                                <input type="radio" class="btn-check"
                                                       name="glossary_agent_config_choice" id="glossaryAgentSame"
                                                       value="same" autocomplete="off" checked>
                                                <label class="btn btn-outline-primary" for="glossaryAgentSame"
                                                       data-i18n="glossaryGenConfigSame">与翻译配置相同</label>

                                                <input type="radio" class="btn-check"
                                                       name="glossary_agent_config_choice" id="glossaryAgentCustom"
                                                       value="custom" autocomplete="off">
                                                <label class="btn btn-outline-primary" for="glossaryAgentCustom"
                                                       data-i18n="glossaryGenConfigCustom">自定义</label>
                                            </div>
                                        </div>

                                        <!-- Custom Agent Config Form (conditionally displayed) -->
                                        <div id="glossaryAgentCustomConfigContainer" class="border p-3 rounded"
                                             style="display: none;">

                                            <div>
                                                <label for="glossary_agent_platform_select" class="form-label"
                                                       data-i18n="platformLabel">选择平台</label>
                                                <select class="form-select" id="glossary_agent_platform_select">
                                                    <!-- Options will be copied from main select -->
                                                </select>
                                            </div>
                                            <div class="form-text mb-3" id="glossary_base_url_display_container">
                                                Base URL: <code id="glossary_base_url_display"></code>
                                            </div>
                                            <div class="mb-3" id="glossaryAgentBaseUrlGroup" style="display: none;">
                                                <label for="glossary_agent_baseurl" class="form-label"
                                                       data-i18n="baseUrlLabel">API 地址 (Base URL)</label>
                                                <input type="url" class="form-control" id="glossary_agent_baseurl"
                                                       name="glossary_agent_baseurl"
                                                       data-i18n-placeholder="baseUrlPlaceholder"
                                                       placeholder="OpenAi兼容地址">
                                            </div>

                                            <div class="mb-3">
                                                <label for="glossary_agent_key" class="form-label">API Key</label>
                                                <div class="input-group">
                                                    <input type="password" class="form-control" id="glossary_agent_key"
                                                           name="glossary_agent_key"
                                                           data-i18n-placeholder="apiKeyPlaceholderOptional"
                                                           placeholder="请输入您的API Key（可选）">
                                                    <button class="btn btn-outline-secondary toggle-password"
                                                            type="button" data-target="glossary_agent_key"><i
                                                            class="bi bi-eye-slash"></i></button>
                                                </div>
                                            </div>

                                            <div class="mb-3">
                                                <label for="glossary_agent_model_id" class="form-label"
                                                       data-i18n="modelIdLabel">选择模型</label>
                                                <input type="text" class="form-control" id="glossary_agent_model_id"
                                                       name="glossary_agent_model_id"
                                                       data-i18n-placeholder="modelIdPlaceholder"
                                                       placeholder="例如: gpt-4-turbo, glm-4">
                                            </div>


                                            <!-- START: Added Target Language for Glossary Agent -->
                                            <div class="mb-3">
                                                <label for="glossary_agent_to_lang" class="form-label"
                                                       data-i18n="targetLanguageLabel">目标语言</label>
                                                <select class="form-select" id="glossary_agent_to_lang"
                                                        name="glossary_agent_to_lang">
                                                    <option value="中文">中文(简体中文)</option>
                                                    <option value="英文">英文(English)</option>
                                                    <option value="西班牙文">西班牙文(Español)</option>
                                                    <option value="法文">法文(Français)</option>
                                                    <option value="德文">德文(Deutsch)</option>
                                                    <option value="日文">日文(日本語)</option>
                                                    <option value="韩文">韩文(한국어)</option>
                                                    <option value="俄文">俄文(Русский)</option>
                                                    <option value="葡萄牙文">葡萄牙文(Português)</option>
                                                    <option value="阿拉伯文">阿拉伯文(العَرَبِيَّة)</option>
                                                    <option value="越南文">越南文(tiếng Việt)</option>
                                                    <option value="custom" data-i18n="targetLanguageCustom">其它
                                                        (自定义)
                                                    </option>
                                                </select>
                                                <div class="mt-2" id="glossaryAgentCustomLangGroup"
                                                     style="display: none;">
                                                    <input type="text" class="form-control"
                                                           id="glossary_agent_custom_to_lang"
                                                           name="glossary_agent_custom_to_lang"
                                                           data-i18n-placeholder="customLangPlaceholder"
                                                           placeholder="请输入目标语言, 例如: Italian">
                                                </div>
                                            </div>
                                            <!-- END: Added Target Language for Glossary Agent -->

                                            <div class="mb-3">
                                                <label for="glossary-agent-chunk-size-slider"
                                                       class="form-label d-flex justify-content-between">
                                                    <span><span data-i18n="chunkSizeLabel">分块大小</span>: <span
                                                            id="glossary-agent-chunk-size-display"></span></span>
                                                    <button type="button"
                                                            class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                            id="glossary-agent-chunk-size-reset" data-i18n="resetBtn">重置
                                                    </button>
                                                </label>
                                                <input type="range" class="form-range" min="1000" max="8000" step="100"
                                                       id="glossary-agent-chunk-size-slider"
                                                       name="glossary_agent_chunk_size">
                                            </div>
                                            <div class="mb-3">
                                                <label for="glossary-agent-concurrent-slider"
                                                       class="form-label d-flex justify-content-between">
                                                    <span><span data-i18n="concurrentLabel">并发数</span>: <span
                                                            id="glossary-agent-concurrent-display"></span></span>
                                                    <button type="button"
                                                            class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                            id="glossary-agent-concurrent-reset" data-i18n="resetBtn">重置
                                                    </button>
                                                </label>
                                                <input type="range" class="form-range" min="1" max="60" step="1"
                                                       id="glossary-agent-concurrent-slider"
                                                       name="glossary_agent_concurrent">
                                            </div>
                                            <div class="mb-3">
                                                <label for="glossary-agent-temperature-slider"
                                                       class="form-label d-flex justify-content-between">
                                                    <span>Temperature: <span
                                                            id="glossary-agent-temperature-display">0.7</span></span>
                                                    <button type="button"
                                                            class="btn btn-sm btn-outline-secondary py-0 px-1 slider-reset-btn"
                                                            id="glossary-agent-temperature-reset" data-i18n="resetBtn">
                                                        重置
                                                    </button>
                                                </label>
                                                <input type="range" class="form-range" min="0" max="2" step="0.1"
                                                       id="glossary-agent-temperature-slider"
                                                       name="glossary_agent_temperature">
                                            </div>

                                            <div class="mb-3">
                                                <label class="form-label" data-i18n="thinkingModeLabel">思考模式</label>
                                                <div id="glossaryAgentThinkingModeBtnGroup" class="btn-group w-100"
                                                     role="group">
                                                    <input type="radio" class="btn-check" name="glossary_agent_thinking"
                                                           id="glossaryAgentThinkingEnable" value="enable"
                                                           autocomplete="off">
                                                    <label class="btn btn-outline-primary"
                                                           for="glossaryAgentThinkingEnable"
                                                           data-i18n="thinkingModeEnable">启用</label>
                                                    <input type="radio" class="btn-check" name="glossary_agent_thinking"
                                                           id="glossaryAgentThinkingDisable" value="disable"
                                                           autocomplete="off">
                                                    <label class="btn btn-outline-primary"
                                                           for="glossaryAgentThinkingDisable"
                                                           data-i18n="thinkingModeDisable">禁用(推荐)</label>
                                                    <input type="radio" class="btn-check" name="glossary_agent_thinking"
                                                           id="glossaryAgentThinkingDefault" value="default"
                                                           autocomplete="off" checked>
                                                    <label class="btn btn-outline-primary"
                                                           for="glossaryAgentThinkingDefault"
                                                           data-i18n="thinkingModeDefault">默认</label>
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                    </div>
                </form>

                <!-- 项目信息 -->
                <div class="mt-4 text-center text-muted small project-info">
                    <p class="bi bi-github mb-2" data-i18n="githubInfo">
                        GitHub主页(欢迎star❤): <br/>
                        <a href="https://github.com/xunbu/docutranslate" target="_blank" rel="noopener noreferrer">https://github.com/xunbu/docutranslate</a>
                    </p>
                    <p class="bi bi-tencent-qq mb-2" data-i18n="qqGroupInfo">
                        交流QQ群: 1047781902
                    </p>
                    <p class="bi mb-0">version:<span id="versionDisplay"></span></p>
                </div>

            </div>
        </div>

        <!-- Right: Task Area -->
        <div class="col-lg-8">
            <div class="task-area" id="task-area-container">
                <div class="d-flex justify-content-between align-items-center mb-3">
                    <h4 class="mb-0"><i class="bi bi-list-task me-2"></i><span data-i18n="taskListTitle">任务列表</span>
                    </h4>
                    <button class="btn btn-primary" id="addNewTaskBtn"><i class="bi bi-plus-circle-fill me-2"></i><span
                            data-i18n="newTaskBtn">新建任务</span>
                    </button>
                </div>
                <div id="task-container">
                    <!-- Task cards will be injected here -->
                </div>
                <div id="no-task-placeholder" class="text-center text-muted mt-5">
                    <img src="/static/favicon.ico" alt="LOGO" style="width:10%;min-width: 55px; height: auto;">
                    <p class="mt-3" data-i18n="noTaskPlaceholder">当前没有任务，点击“新建任务”开始吧！</p>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Task Card Template -->
<template id="taskCardTemplate">
    <div class="card mb-3 task-card">
        <div class="card-header d-flex justify-content-between align-items-center">
            <span class="fw-bold"><span data-i18n="taskCardIdLabel">任务 ID</span>: <code class="task-id-display"><span
                    class="task-id-placeholder" data-i18n="taskCardIdPlaceholder">等待提交...</span></code></span>
            <button type="button" class="btn-close remove-task-btn" aria-label="Close"></button>
        </div>
        <div class="card-body">
            <div class="row">
                <div class="col-md-5">
                    <input type="file" class="d-none file-input">
                    <div class="file-drop-area">
                        <div class="file-drop-default">
                            <i class="bi bi-cloud-arrow-up fs-1"></i>
                            <p class="file-drop-prompt mb-0" data-i18n="taskCardFileDrop">点击或拖拽文件到此处</p>
                        </div>
                        <div class="file-drop-selected" style="display: none;">
                            <i class="bi bi-check-circle-fill fs-1 text-success"></i>
                            <p class="mb-0 mt-2 fw-bold text-success" data-i18n="taskCardFileSelected">文件已选择</p>
                        </div>
                    </div>
                    <div class="file-name-display-wrapper mt-2" style="display: none;">
                        <span class="fw-bold" data-i18n="taskCardFilenameLabel">文件名: </span>
                        <span class="file-name-display text-success"></span>
                    </div>
                </div>
                <div class="col-md-7">
                    <h6><i class="bi bi-terminal me-2"></i><span data-i18n="taskCardLogLabel">日志</span></h6>
                    <div class="log-area"></div>
                    <div class="mt-2">
                        <div class="status-message-container">
                            <span class="status-message small text-muted"
                                  data-i18n="taskCardStatusWaiting">等待上传文件...</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <div class="card-footer d-flex justify-content-between align-items-center">
            <div class="download-buttons" style="display: none;">
                <button class="btn btn-sm btn-success preview-html-btn" style="display: none;"><i
                        class="bi bi-eye-fill me-1"></i><span data-i18n="taskCardPreviewBtn">预览</span>
                </button>
                <div class="btn-group">
                    <button type="button" class="btn btn-sm btn-secondary dropdown-toggle" data-bs-toggle="dropdown"
                            aria-expanded="false">
                        <i class="bi bi-download me-1"></i><span data-i18n="taskCardDownloadBtn">下载</span>
                    </button>
                    <ul class="dropdown-menu download-menu-container">
                        <!-- Populated by JavaScript -->
                    </ul>
                </div>
                <!-- [NEW] Attachment Button Group -->
                <div class="btn-group attachment-btn-group" style="display: none;">
                    <button type="button" class="btn btn-sm btn-info dropdown-toggle" data-bs-toggle="dropdown"
                            aria-expanded="false">
                        <i class="bi bi-paperclip me-1"></i><span data-i18n="taskCardAttachmentBtn">附件</span>
                    </button>
                    <ul class="dropdown-menu attachment-menu-container">
                        <!-- Populated by JavaScript -->
                    </ul>
                </div>
            </div>
            <button class="btn btn-primary start-translate-btn ms-auto"><i class="bi bi-play-fill me-1"></i><span
                    data-i18n="taskCardStartBtn">开始翻译</span>
            </button>
        </div>
    </div>
</template>

<!-- Reusable Download Menu Template -->
<template id="downloadMenuTemplate">
    <li class="download-item-md"><a class="dropdown-item" href="#"><i
            class="bi bi-markdown me-2"></i><span data-i18n="downloadMdEmbedded">Markdown(嵌图)</span></a></li>
    <li class="download-item-md-zip"><a class="dropdown-item" href="#"><i
            class="bi bi-file-zip me-2"></i><span data-i18n="downloadMdZip">Markdown压缩包</span></a></li>
    <li class="download-item-txt"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-txt me-2"></i>TXT</a></li>
    <li class="download-item-json"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-json me-2"></i>JSON</a></li>
    <li class="download-item-docx"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-docx me-2"></i>DOCX</a></li>
    <li class="download-item-xlsx"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-xlsx me-2"></i>XLSX</a></li>
    <li class="download-item-csv"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-csv me-2"></i>CSV</a></li>
    <li class="download-item-srt"><a class="dropdown-item" href="#"><i
            class="bi bi-file-text me-2"></i>SRT</a></li>
    <li class="download-item-epub"><a class="dropdown-item" href="#"><i
            class="bi bi-book me-2"></i>EPUB</a></li>
    <li class="download-item-html"><a class="dropdown-item" href="#"><i
            class="bi bi-filetype-html me-2"></i>HTML</a></li>
    <li class="download-item-pdf"><a class="dropdown-item" href="#"><i
            class="bi bi-file-earmark-pdf me-2"></i>PDF</a></li>
</template>


<!-- Preview Offcanvas with Resizable Panes -->
<div class="offcanvas offcanvas-end" data-bs-scroll="true" tabindex="-1" id="previewOffcanvas"
     aria-labelledby="previewOffcanvasLabel">
    <div class="offcanvas-header border-bottom">
        <h5 class="offcanvas-title" id="previewOffcanvasLabel" data-i18n="previewTitle">预览</h5>
        <div class="btn-group me-auto ms-4" role="group">
            <button type="button" class="btn btn-sm btn-primary" id="setBilingualViewBtn"
                    data-i18n="previewBilingualBtn">双语
            </button>
            <button type="button" class="btn btn-sm btn-outline-primary" id="setTranslatedOnlyViewBtn"
                    data-i18n="previewTranslatedOnlyBtn">仅译文
            </button>
        </div>
        <button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
    </div>
    <div class="offcanvas-body d-flex flex-column p-2">
        <div class="preview-split-container flex-grow-1">
            <div id="originalPreviewContainer" class="preview-pane-wrapper">
                <h6 class="text-center text-muted small" data-i18n="previewOriginal">原文</h6>
                <div class="preview-pane" id="originalPreviewPane"></div>
            </div>
            <div id="translatedPreviewContainer" class="preview-pane-wrapper">
                <h6 class="text-center text-muted small" data-i18n="previewTranslated">译文</h6>
                <div class="preview-pane">
                    <iframe id="translatedPreviewFrame" src="about:blank"></iframe>
                </div>
            </div>
        </div>
        <div class="offcanvas-footer mt-2 pt-3 border-top d-flex justify-content-end align-items-center">
            <button type="button" class="btn btn-secondary" data-bs-dismiss="offcanvas" data-i18n="closeBtn">关闭
            </button>
            <div class="btn-group ms-2">
                <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown"
                        aria-expanded="false" id="previewDownloadBtn">
                    <i class="bi bi-download me-1"></i><span data-i18n="downloadBtn">下载</span>
                </button>
                <ul class="dropdown-menu dropdown-menu-end" id="previewDownloadMenu">
                    <!-- Populated by JavaScript -->
                </ul>
            </div>
        </div>
    </div>
</div>

<!-- Hidden iframe for direct PDF printing -->
<iframe id="printFrame" style="display: none;"></iframe>

<!-- Bottom Left Controls -->
<div class="bottom-left-controls">
    <!-- Language Switcher -->
    <div class="dropdown">
        <button class="btn btn-secondary dropdown-toggle" type="button" id="language-switcher" data-bs-toggle="dropdown"
                aria-expanded="false" title="切换语言 / Switch Language">
            <i class="bi bi-translate"></i>
        </button>
        <ul class="dropdown-menu" aria-labelledby="language-switcher" id="languageMenu">
            <li><a class="dropdown-item" href="#" data-lang="zh">中文</a></li>
            <li><a class="dropdown-item" href="#" data-lang="en">English</a></li>
        </ul>
    </div>

    <!-- Theme Switcher -->
    <div class="dropdown">
        <button class="btn btn-secondary dropdown-toggle" type="button" id="theme-switcher" data-bs-toggle="dropdown"
                aria-expanded="false">
            <i class="bi bi-circle-half"></i>
        </button>
        <ul class="dropdown-menu" aria-labelledby="theme-switcher">
            <li>
                <button class="dropdown-item" type="button" data-bs-theme-value="light"><i
                        class="bi bi-sun-fill me-2"></i>
                    Light
                </button>
            </li>
            <li>
                <button class="dropdown-item" type="button" data-bs-theme-value="dark"><i
                        class="bi bi-moon-stars-fill me-2"></i> Dark
                </button>
            </li>
            <li>
                <button class="dropdown-item active" type="button" data-bs-theme-value="auto"><i
                        class="bi bi-circle-half me-2"></i> Auto
                </button>
            </li>
        </ul>
    </div>
</div>


<!-- Tutorial Modal -->
<div class="modal fade" id="tutorialModal" tabindex="-1" aria-labelledby="tutorialModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-lg modal-dialog-centered modal-dialog-scrollable">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="tutorialModalLabel"><i class="bi bi-book-half me-2"></i><span
                        data-i18n="tutorialModalTitle">使用教程</span></h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body" data-i18n="tutorialModalBody">
                <p><i class="bi bi-camera-video me-2"></i>视频教程可以在B站搜索 <a
                        href="https://search.bilibili.com/all?keyword=docutranslate" target="_blank">docutranslate</a>
                    获取。</p>
                <p>欢迎使用 DocuTranslate！请按照以下步骤完成文档翻译：</p>
                <ol>
                    <li>
                        <strong><i class="bi bi-diagram-3 me-2"></i>选择工作流</strong>
                        <p class="mt-2">
                            首先，在配置面板顶部选择您需要的翻译流程。不同的工作流适用于不同类型的文件：
                        <ul>
                            <li><b>转Markdown再翻译</b>: 适用于翻译PDF、markdown、图片等文件。</li>
                            <li><b>纯文本翻译</b>: 用于翻译 <code>.txt</code> 等纯文本文件。</li>
                            <li><b>JSON翻译</b>: 用于翻译 <code>.json</code> 文件中的特定字段。</li>
                            <li><b>DOCX翻译</b>: 用于翻译 <code>.docx</code> 文件。</li>
                            <li><b>XLSX翻译</b>: 用于翻译 <code>.xlsx</code> 电子表格、 <code>.csv</code> 文件。</li>
                            <li><b>SRT字幕翻译</b>: 用于翻译 <code>.srt</code> 字幕文件。</li>
                            <li><b>EPUB翻译</b>: 用于翻译 <code>.epub</code> 电子书文件。</li>
                            <li><b>HTML翻译</b>: 用于翻译 <code>.html</code> 文件。</li>
                        </ul>
                        <div class="alert alert-info mt-2" role="alert">
                            <i class="bi bi-lightbulb-fill me-2"></i>新增功能:
                            "自动选择工作流"开关已默认开启。您只需上传文件，系统会自动为您匹配合适的工作流，简化操作。
                        </div>
                        </p>
                    </li>
                    <li>
                        <strong><i class="bi bi-gear-fill me-2"></i>配置参数</strong>
                        <p class="mt-2">根据您选择的工作流，完成相应的配置。所有配置项都会自动保存在您的浏览器中。</p>
                        <ul>
                            <li class="mb-2"><strong>解析配置</strong> (仅在“转Markdown再翻译”工作流下显示):
                                <ul class="mt-1">
                                    <li><strong>解析引擎</strong>:
                                        选择一个引擎将您的文件（如PDF）转换为适合翻译的Markdown格式。如果您的文件已经是Markdown格式，则无需选择。
                                    </li>
                                    <li><strong>Mineru Token</strong>: 如果您选择 <code>minerU</code> 引擎，需要在此处填入您的Token。
                                    </li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>TXT/DOCX/XLSX/SRT/EPUB/HTML翻译选项</strong> (在对应工作流下显示):
                                <ul class="mt-1">
                                    <li><strong>插入模式</strong>:
                                        定义翻译结果如何放入文档或字幕。您可以选择直接“替换”原文，或是在原文之后“附加”，或是在原文之前“前置”。
                                    </li>
                                    <li><strong>分隔符</strong>: 当选择“附加”或“前置”模式时，此项用于在原文和译文之间插入分隔符。
                                    </li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>JSON路径配置</strong> (仅在“JSON翻译”工作流下显示):
                                <ul class="mt-1">
                                    <li><strong>需要翻译的JSON路径</strong>: 每行输入一个 <a
                                            href="https://goessner.net/articles/JsonPath/" target="_blank">JSONPath</a>
                                        表达式，指定需要翻译的字段。
                                    </li>
                                    <li>例如:<code>$..description</code>翻译所有键为description的值。<code>$.items[0].name</code>翻译第一个item的name值。
                                        <code>$.*</code>翻译所有字符串。
                                    </li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>翻译模型</strong>:
                                <ul class="mt-1">
                                    <li><strong>跳过翻译</strong>:
                                        勾选此项后，将只执行文档解析和格式转换，不调用AI进行翻译。
                                    </li>
                                    <li><strong>选择平台/API 地址/API Key/模型 ID</strong>:
                                        配置您希望使用的AI翻译服务。
                                    </li>
                                    <li>模型ID参考平台文档，建议使用非推理模型或混合推理模型（关闭思考）。</li>
                                    <li>模型能力指令遵循越强，<strong>出错</strong>、<strong>漏翻</strong>的概率越低。</li>
                                </ul>
                            </li>
                            <li class="mb-2"><strong>翻译配置</strong>:
                                <ul class="mt-1">
                                    <li><strong>目标语言/自定义Prompt/术语表</strong>:
                                        指定翻译的目标语言、附加指令以及用于保证特定名词翻译准确性的术语表。
                                    </li>
                                    <li><strong>思考模式</strong>:设置混合推理模型是否进行思考，目前支持智谱的glm4.5系列、阿里云的qwen3系列、火山引擎的seed1.6系列，建议选择禁用思考。
                                    </li>
                                    <li><strong>分块大小/并发数/Temperature</strong>: 发给AI的分块大小、并发请求数和温度，通常保持默认即可。
                                    </li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                    <li>
                        <strong><i class="bi bi-file-earmark-arrow-up-fill me-2"></i>上传文件</strong>
                        <p class="mt-2">在右侧的任务列表中，点击或拖拽您的文档到文件上传区域。</p>
                    </li>
                    <li>
                        <strong><i class="bi bi-play-circle-fill me-2"></i>开始翻译</strong>
                        <p class="mt-2">文件选择成功后，点击任务卡片右下角的 <span
                                class="badge bg-primary">开始翻译</span> 按钮。系统将开始处理任务，您可以在日志区域查看实时进度。
                        </p>
                    </li>
                    <li>
                        <strong><i class="bi bi-check-circle-fill me-2"></i>查看与下载</strong>
                        <p class="mt-2">翻译完成后，任务卡片下方会出现操作按钮：</p>
                        <ul>
                            <li><span class="badge bg-success"><i class="bi bi-eye-fill me-1"></i>预览</span>:
                                在右侧滑出的面板中进行原文和译文的对照预览（仅作参考）。
                            </li>
                            <li><span class="badge bg-secondary"><i class="bi bi-download me-1"></i>下载</span>:
                                下载包括 PDF, DOCX, XLSX, HTML, Markdown 等多种格式的译文。
                            </li>
                            <li><span class="badge bg-info"><i class="bi bi-paperclip me-1"></i>附件</span>:
                                如果翻译过程中生成了附加文件（如术语表），可在此处下载。
                            </li>
                        </ul>
                    </li>
                </ol>
                <div class="alert alert-info mt-3" role="alert">
                    <i class="bi bi-info-circle-fill me-2"></i><strong>提示</strong>: 所有配置都会自动保存在您的浏览器本地，方便下次使用。
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-primary" data-bs-dismiss="modal" data-i18n="tutorialUnderstandBtn">
                    我明白了
                </button>
            </div>
        </div>
    </div>
</div>
<!-- Contributors Modal -->
<div class="modal fade" id="contributorsModal" tabindex="-1" aria-labelledby="contributorsModalLabel"
     aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="contributorsModalLabel"><i
                        class="bi bi-heart-fill me-2 text-danger"></i><span
                        data-i18n="contributorsModalTitle">感谢贡献</span>
                </h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body">
                <p data-i18n="contributorsPara1">DocuTranslate是一个开源项目！大家的需求与使用是项目进步的动力。</p>
                <p data-i18n="contributorsPara2">感谢所有资助项目、提交代码与宝贵建议及给项目star的朋友们！</p>
                <div class="alert alert-success mt-4" role="alert">
                    <p data-i18n="contributorsWelcome">欢迎通过以下方式参与贡献：</p>
                    <hr>
                    <p class="mb-0">
                        <a href="https://github.com/xunbu/docutranslate" target="_blank"
                           class="btn btn-info btn-sm ms-2">
                            <i class="bi bi-github me-1"></i><span data-i18n="contributorsGithub">github 主页</span>
                        </a>
                        <a href="https://github.com/xunbu/docutranslate/pulls" target="_blank"
                           class="btn btn-success btn-sm ms-2">
                            <i class="bi bi-git me-1"></i><span data-i18n="contributorsPR">提交 Pull Request</span>
                        </a>
                        <a href="https://github.com/xunbu/docutranslate/issues" target="_blank"
                           class="btn btn-warning btn-sm ms-2">
                            <i class="bi bi-bug-fill me-1"></i><span data-i18n="contributorsIssue">报告 Issue</span>
                        </a>
                    </p>
                    <hr>
                    <p data-i18n="contributorsQQ">或者通过QQ群联系作者：<span>1047781902</span></p>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal" data-i18n="closeBtn">关闭
                </button>
            </div>
        </div>
    </div>
</div>

<!-- [NEW] Glossary Modal -->
<div class="modal fade" id="glossaryModal" tabindex="-1" aria-labelledby="glossaryModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered modal-dialog-scrollable">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="glossaryModalLabel" data-i18n="glossaryModalTitle">当前术语表</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body">
                <table class="table table-striped table-hover">
                    <thead>
                    <tr>
                        <th scope="col" data-i18n="glossaryTableSource">原文 (src)</th>
                        <th scope="col" data-i18n="glossaryTableDestination">译文 (dst)</th>
                    </tr>
                    </thead>
                    <tbody id="glossaryTableBody">
                    <!-- Content will be populated by JS -->
                    </tbody>
                </table>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal" data-i18n="closeBtn">关闭
                </button>
            </div>
        </div>
    </div>
</div>


<!-- Bootstrap JS -->
<script src="/static/bootstrap.bundle.min.js" crossorigin="anonymous"></script>
<!-- Split.js for resizable panes -->
<script src="/static/split.min.js"></script>
<!-- [NEW] PapaParse for CSV parsing -->
<script src="/static/papaparse.min.js"></script>

<script type="module">
    // --- I18N Data ---
    // Initialize with a minimal fallback for critical error messages.
    // The full dataset will be loaded asynchronously in the init() function.
    let i18nData = {
        zh: {
            init_i18n_failed_alert: '加载界面翻译资源失败，请检查网络连接或联系管理员。',
            init_failed_alert: '初始化失败，无法连接到后端服务。请检查服务是否运行或刷新页面。'
        },
        en: {
            init_i18n_failed_alert: 'Failed to load interface translations. Please check your network connection or contact an administrator.',
            init_failed_alert: 'Initialization failed, could not connect to the backend service. Please ensure the service is running and refresh the page.'
        }
    };

    let currentLang = 'zh'; // Global language state

    // --- I18N Helper Functions ---
    const getText = (key, fallback = '') => {
        const translations = i18nData[currentLang] || i18nData.zh;
        return translations[key] || fallback || key;
    };

    /**
     * Updates the UI language based on the selected language.
     * @param {string} lang - The language code (e.g., 'zh', 'en').
     */
    function setLanguage(lang) {
        if (!i18nData[lang]) return;
        currentLang = lang;
        const translations = i18nData[lang];
        document.documentElement.lang = lang === 'zh' ? 'zh-CN' : 'en';

        // Define attributes and corresponding properties to update
        const i18nTargets = {
            'data-i18n': (el, text) => el.innerHTML = text,
            'data-i18n-placeholder': (el, text) => el.placeholder = text,
            'data-i18n-title': (el, text) => {
                if (el.tagName === 'TITLE') {
                    el.textContent = text;
                } else {
                    el.title = text;
                    const tooltipInstance = bootstrap.Tooltip.getInstance(el);
                    if (tooltipInstance) {
                        tooltipInstance.setContent({'.tooltip-inner': text});
                    }
                }
            }
        };

        // Update all elements with i18n attributes in a single pass
        Object.entries(i18nTargets).forEach(([attribute, updater]) => {
            document.querySelectorAll(`[${attribute}]`).forEach(el => {
                const key = el.getAttribute(attribute);
                if (translations[key] !== undefined) {
                    updater(el, translations[key]);
                }
            });
        });

        // Update dynamic UI parts that are built with JS
        updateWorkflowUI();
        updateConvertEnginUI(true);

        // Update language switcher active state
        const langMenu = document.getElementById('languageMenu');
        langMenu.querySelectorAll('a.active').forEach(a => a.classList.remove('active'));
        const activeLink = langMenu.querySelector(`a[data-lang="${lang}"]`);
        if (activeLink) activeLink.classList.add('active');

        // Save preference
        saveToStorage('ui_language', lang);
    }


    function initI18n() {
        const langMenu = document.getElementById('languageMenu');
        langMenu.querySelectorAll('a[data-lang]').forEach(a => {
            a.addEventListener('click', (e) => {
                e.preventDefault();
                setLanguage(a.dataset.lang);
            });
        });

        const savedLang = getFromStorage('ui_language') || (navigator.language.toLowerCase().startsWith('en') ? 'en' : 'zh');
        setLanguage(savedLang);
    }

    // --- End I18N ---

    const tooltipTriggerList = document.querySelectorAll('[data-bs-toggle="tooltip"]');
    const tooltipList = [...tooltipTriggerList].map(tooltipTriggerEl => new bootstrap.Tooltip(tooltipTriggerEl));

    // --- DOM Elements ---
    const settingsForm = document.getElementById('translateForm');

    // Workflow elements
    const workflowTypeSelect = document.getElementById('workflowTypeSelect');
    const autoWorkflowSwitch = document.getElementById('autoWorkflowSwitch');
    const parsingSettingsContainer = document.getElementById('parsingSettingsContainer');
    const parsingSettingsTitle = document.getElementById('parsingSettingsTitle');
    const jsonSettingsContainer = document.getElementById('jsonSettingsContainer');
    const jsonSettingsTitle = document.getElementById('jsonSettingsTitle');
    const jsonPathsTextarea = document.getElementById('json_paths_textarea');
    const txtSettingsContainer = document.getElementById('txtSettingsContainer');
    const txtSettingsTitle = document.getElementById('txtSettingsTitle');
    const txtInsertModeSelect = document.getElementById('txt_insert_mode');
    const txtSeparatorGroup = document.getElementById('txtSeparatorGroup');
    const txtSeparatorInput = document.getElementById('txt_separator');
    const xlsxSettingsContainer = document.getElementById('xlsxSettingsContainer');
    const xlsxSettingsTitle = document.getElementById('xlsxSettingsTitle');
    const xlsxInsertModeSelect = document.getElementById('xlsx_insert_mode');
    const xlsxSeparatorGroup = document.getElementById('xlsxSeparatorGroup');
    const xlsxSeparatorInput = document.getElementById('xlsx_separator');
    const xlsxTranslateRegionsTextarea = document.getElementById('xlsx_translate_regions');
    const docxSettingsContainer = document.getElementById('docxSettingsContainer');
    const docxSettingsTitle = document.getElementById('docxSettingsTitle');
    const docxInsertModeSelect = document.getElementById('docx_insert_mode');
    const docxSeparatorGroup = document.getElementById('docxSeparatorGroup');
    const docxSeparatorInput = document.getElementById('docx_separator');
    const srtSettingsContainer = document.getElementById('srtSettingsContainer');
    const srtSettingsTitle = document.getElementById('srtSettingsTitle');
    const srtInsertModeSelect = document.getElementById('srt_insert_mode');
    const srtSeparatorGroup = document.getElementById('srtSeparatorGroup');
    const srtSeparatorInput = document.getElementById('srt_separator');
    const epubSettingsContainer = document.getElementById('epubSettingsContainer');
    const epubSettingsTitle = document.getElementById('epubSettingsTitle');
    const epubInsertModeSelect = document.getElementById('epub_insert_mode');
    const epubSeparatorGroup = document.getElementById('epubSeparatorGroup');
    const epubSeparatorInput = document.getElementById('epub_separator');
    const htmlSettingsContainer = document.getElementById('htmlSettingsContainer');
    const htmlSettingsTitle = document.getElementById('htmlSettingsTitle');
    const htmlInsertModeSelect = document.getElementById('html_insert_mode');
    const htmlSeparatorGroup = document.getElementById('htmlSeparatorGroup');
    const htmlSeparatorInput = document.getElementById('html_separator');
    const aiSettingsTitle = document.getElementById('aiSettingsTitle');
    const translationSettingsTitle = document.getElementById('translationSettingsTitle');
    const glossaryGenSettingsTitle = document.getElementById('glossaryGenSettingsTitle');


    // Parsing elements
    const convertEnginSelect = document.getElementById('convert_engine');
    const mineruTokenGroup = document.getElementById('mineruTokenGroup');
    const mineruTokenInput = document.getElementById('mineru_token');
    const mineruModelVersionGroup = document.getElementById('mineruModelVersionGroup');
    const modelVersionSelect = document.getElementById('model_version');
    const formulaCheckbox = document.getElementById('formula_ocr');
    const codeCheckbox = document.getElementById('code_ocr');
    const codeOcrSwitch = document.getElementById('codeOcrSwitch');
    const formulaOcrSwitch = formulaCheckbox.parentElement;

    // AI elements
    const skipTranslationSwitch = document.getElementById('skipTranslationSwitch');
    const aiModelSettingsContainer = document.getElementById('aiModelSettingsContainer');
    const platformSelect = document.getElementById('platform_select');
    const apiHref = document.getElementById('api_href');
    const baseUrlGroup = document.getElementById('baseUrlGroup');
    const baseUrlInput = document.getElementById('base_url');
    const apikeyInput = document.getElementById('api_key');
    const modelInput = document.getElementById('model_id');
    const mainBaseUrlDisplay = document.getElementById('main_base_url_display');

    // Translation elements
    const translationSettingsAccordionItem = document.getElementById('translationSettingsAccordionItem');
    const toLangSelect = document.getElementById('to_lang');
    const customLangGroup = document.getElementById('customLangGroup');
    const customLangInput = document.getElementById('custom_to_lang');
    const customPromptTranslateArea = document.getElementById("custom_prompt");
    // [NEW] Glossary elements
    const glossaryFilesInput = document.getElementById('glossary_files');
    const viewGlossaryBtn = document.getElementById('viewGlossaryBtn');
    const clearGlossaryBtn = document.getElementById('clearGlossaryBtn');
    const glossaryModalEl = document.getElementById('glossaryModal');
    const glossaryModal = new bootstrap.Modal(glossaryModalEl);
    const glossaryTableBody = document.getElementById('glossaryTableBody');

    // [MODIFIED] Glossary Generation elements
    const glossaryGenerationContainer = document.getElementById('glossaryGenerationContainer');
    const glossaryGenerateEnableSwitch = document.getElementById('glossary_generate_enable');
    const glossaryAgentOptionsContainer = document.getElementById('glossaryAgentOptionsContainer');
    const glossaryAgentConfigChoiceRadios = document.querySelectorAll('input[name="glossary_agent_config_choice"]');
    const glossaryAgentCustomConfigContainer = document.getElementById('glossaryAgentCustomConfigContainer');
    const glossaryAgentPlatformSelect = document.getElementById('glossary_agent_platform_select');
    const glossaryAgentBaseUrlGroup = document.getElementById('glossaryAgentBaseUrlGroup');
    const glossaryAgentBaseUrlInput = document.getElementById('glossary_agent_baseurl');
    const glossaryAgentKeyInput = document.getElementById('glossary_agent_key');
    const glossaryAgentModelIdInput = document.getElementById('glossary_agent_model_id');
    const glossaryBaseUrlDisplay = document.getElementById('glossary_base_url_display');
    const glossaryAgentToLangSelect = document.getElementById('glossary_agent_to_lang');
    const glossaryAgentCustomLangGroup = document.getElementById('glossaryAgentCustomLangGroup');
    const glossaryAgentCustomLangInput = document.getElementById('glossary_agent_custom_to_lang');
    const glossaryAgentTemperatureSlider = document.getElementById('glossary-agent-temperature-slider');
    const glossaryAgentTemperatureDisplay = document.getElementById('glossary-agent-temperature-display');
    const glossaryAgentTemperatureReset = document.getElementById('glossary-agent-temperature-reset');
    const glossaryAgentChunkSizeSlider = document.getElementById('glossary-agent-chunk-size-slider');
    const glossaryAgentChunkSizeDisplay = document.getElementById('glossary-agent-chunk-size-display');
    const glossaryAgentChunkSizeReset = document.getElementById('glossary-agent-chunk-size-reset');
    const glossaryAgentConcurrentSlider = document.getElementById('glossary-agent-concurrent-slider');
    const glossaryAgentConcurrentDisplay = document.getElementById('glossary-agent-concurrent-display');
    const glossaryAgentConcurrentReset = document.getElementById('glossary-agent-concurrent-reset');
    const glossaryAgentThinkingRadios = document.querySelectorAll('input[name="glossary_agent_thinking"]');


    // Moved Advanced elements (now part of translation settings)
    const chunkSizeSlider = document.getElementById('chunk-size-slider');
    const chunkSizeDisplay = document.getElementById('chunk-size-display');
    const chunkSizeReset = document.getElementById('chunk-size-reset');
    const concurrentSlider = document.getElementById('concurrent-slider');
    const concurrentDisplay = document.getElementById('concurrent-display');
    const concurrentReset = document.getElementById("concurrent-reset");
    const temperatureSlider = document.getElementById('temperature-slider');
    const temperatureDisplay = document.getElementById('temperature-display');
    const temperatureReset = document.getElementById("temperature-reset");

    // General UI elements
    const versionDisplay = document.getElementById("versionDisplay");
    const addNewTaskBtn = document.getElementById('addNewTaskBtn');
    const taskContainer = document.getElementById('task-container');
    const noTaskPlaceholder = document.getElementById('no-task-placeholder');
    const taskCardTemplate = document.getElementById('taskCardTemplate');
    const downloadMenuTemplate = document.getElementById('downloadMenuTemplate');
    const previewOffcanvasEl = document.getElementById('previewOffcanvas');
    const previewOffcanvas = new bootstrap.Offcanvas(previewOffcanvasEl);
    const previewOffcanvasLabel = document.getElementById('previewOffcanvasLabel');
    const originalPreviewPane = document.getElementById('originalPreviewPane');
    const translatedPreviewFrame = document.getElementById('translatedPreviewFrame');
    const originalPreviewContainer = document.getElementById('originalPreviewContainer');
    const translatedPreviewContainer = document.getElementById('translatedPreviewContainer');
    const setBilingualViewBtn = document.getElementById('setBilingualViewBtn');
    const setTranslatedOnlyViewBtn = document.getElementById('setTranslatedOnlyViewBtn');
    const printFrameEl = document.getElementById('printFrame');

    // --- Global State ---
    let defaultParams = {};
    let glossaryData = {}; // [NEW] For glossary_dict
    const tasks = {}; // { cardId: { elements: {...}, state: {...}, intervals: {...} } }
    let isAdminMode = false;
    let previewSplitInstance = null;

    const apiHrefMap = {
        "https://openrouter.ai/api/v1": "https://openrouter.ai/settings/keys",
        "https://api.openai.com/v1": "https://platform.openai.com/api-keys",
        "https://api.deepseek.com/v1": "https://platform.deepseek.com/api_keys",
        "https://open.bigmodel.cn/api/paas/v4": "https://open.bigmodel.cn/usercenter/apikeys",
        "https://dashscope.aliyuncs.com/compatible-mode/v1": "https://bailian.console.aliyun.com/?tab=model#/api-key",
        "https://ark.cn-beijing.volces.com/api/v3": "https://console.volcengine.com/ark/region:ark+cn-beijing/apiKey?apikey=%7B%7D",
        "https://api.siliconflow.cn/v1": "https://cloud.siliconflow.cn/account/ak",
        "https://www.dmxapi.cn/v1": "https://www.dmxapi.cn/token",
        "https://www.dmxapi.com/v1": "https://www.dmxapi.com/console/token",
        "https://generativelanguage.googleapis.com/v1beta/openai/": "https://aistudio.google.com/u/0/apikey"
    };

    const workflowExtensionMap = {
        'txt': 'txt',
        'xlsx': 'xlsx',
        'csv': 'xlsx', // Map csv input to xlsx workflow
        'docx': 'docx',
        'json': 'json',
        'srt': 'srt',
        'epub': 'epub',
        'html': 'html',
        'htm': 'html',
    };
    const defaultAutoWorkflow = 'markdown_based';

    // --- Utility Functions ---
    const generateCardId = () => `card_${Math.random().toString(36).substring(2, 10)}`;
    const saveToStorage = (key, value) => {
        try {
            localStorage.setItem(key, value);
        } catch (e) {
            console.warn("Save to storage failed:", e);
        }
    };
    const getFromStorage = (key, defaultValue = '') => {
        try {
            return localStorage.getItem(key) || defaultValue;
        } catch (e) {
            console.warn("Read from storage failed:", e);
            return defaultValue;
        }
    };

    function fileToBase64(file) {
        return new Promise((resolve, reject) => {
            const reader = new FileReader();
            reader.readAsDataURL(file);
            reader.onload = () => {
                const base64String = reader.result.split(',')[1];
                resolve(base64String);
            };
            reader.onerror = error => reject(error);
        });
    }

    // --- [NEW] Glossary Functions ---
    async function handleGlossaryFiles(event) {
        const files = event.target.files;
        if (!files.length) return;

        let newGlossary = {};
        let loadedCount = 0;

        const parsePromises = Array.from(files).map(file => {
            return new Promise((resolve) => {
                Papa.parse(file, {
                    header: true,
                    skipEmptyLines: true,
                    complete: (results) => {
                        if (results.data) {
                            results.data.forEach(row => {
                                const src = row.src ? row.src.trim() : null;
                                const dst = row.dst ? row.dst.trim() : null;
                                // Add only if src is valid and not already in the dictionary
                                if (src && dst && !newGlossary.hasOwnProperty(src)) {
                                    newGlossary[src] = dst;
                                }
                            });
                        }
                        resolve();
                    },
                    error: (err) => {
                        console.error(`Error parsing ${file.name}:`, err);
                        resolve(); // Resolve anyway to not block other files
                    }
                });
            });
        });

        await Promise.all(parsePromises);

        glossaryData = newGlossary;
        loadedCount = Object.keys(glossaryData).length;

        // Simple feedback
        const btnText = viewGlossaryBtn.querySelector('span');
        if (btnText) {
            btnText.textContent = `${getText('viewGlossaryBtn')} (${loadedCount})`;
        }
        console.log("Glossary loaded:", glossaryData);
    }

    function populateGlossaryModal() {
        glossaryTableBody.innerHTML = ''; // Clear previous content
        const terms = Object.entries(glossaryData);

        if (terms.length === 0) {
            const tr = document.createElement('tr');
            const td = document.createElement('td');
            td.colSpan = 2;
            td.textContent = getText('glossaryEmpty');
            td.className = 'text-center text-muted';
            tr.appendChild(td);
            glossaryTableBody.appendChild(tr);
        } else {
            terms.forEach(([src, dst]) => {
                const tr = document.createElement('tr');
                const tdSrc = document.createElement('td');
                const tdDst = document.createElement('td');
                tdSrc.textContent = src;
                tdDst.textContent = dst;
                tr.appendChild(tdSrc);
                tr.appendChild(tdDst);
                glossaryTableBody.appendChild(tr);
            });
        }
    }

    function clearGlossary() {
        // Reset the data
        glossaryData = {};
        // Clear the file input so the user can re-select the same file if they want
        glossaryFilesInput.value = '';
        // Update the view button text to remove the count
        const btnText = viewGlossaryBtn.querySelector('span');
        if (btnText) {
            btnText.textContent = getText('viewGlossaryBtn');
        }
        console.log("Glossary cleared.");
        // If the modal is open, re-populate it to show it's empty
        if (glossaryModalEl.classList.contains('show')) {
            populateGlossaryModal();
        }
    }


    // --- UI Update Functions based on Workflow ---
    // [REFACTORED] Configuration object to drive workflow UI updates
    const workflowConfigs = {
        'markdown_based': {
            container: parsingSettingsContainer,
            titleEl: parsingSettingsTitle,
            titleKey: 'parsingSettingsTitleText',
            icon: 'bi-file-earmark-binary'
        },
        'txt': {
            container: txtSettingsContainer,
            titleEl: txtSettingsTitle,
            titleKey: 'txtSettingsTitleText',
            icon: 'bi-filetype-txt',
            modeSelect: txtInsertModeSelect,
            separatorGroup: txtSeparatorGroup
        },
        'json': {
            container: jsonSettingsContainer,
            titleEl: jsonSettingsTitle,
            titleKey: 'jsonSettingsTitleText',
            icon: 'bi-signpost-split'
        },
        'xlsx': {
            container: xlsxSettingsContainer,
            titleEl: xlsxSettingsTitle,
            titleKey: 'xlsxSettingsTitleText',
            icon: 'bi-file-earmark-spreadsheet',
            modeSelect: xlsxInsertModeSelect,
            separatorGroup: xlsxSeparatorGroup
        },
        'docx': {
            container: docxSettingsContainer,
            titleEl: docxSettingsTitle,
            titleKey: 'docxSettingsTitleText',
            icon: 'bi-file-earmark-word',
            modeSelect: docxInsertModeSelect,
            separatorGroup: docxSeparatorGroup
        },
        'srt': {
            container: srtSettingsContainer,
            titleEl: srtSettingsTitle,
            titleKey: 'srtSettingsTitleText',
            icon: 'bi-file-text',
            modeSelect: srtInsertModeSelect,
            separatorGroup: srtSeparatorGroup
        },
        'epub': {
            container: epubSettingsContainer,
            titleEl: epubSettingsTitle,
            titleKey: 'epubSettingsTitleText',
            icon: 'bi-book',
            modeSelect: epubInsertModeSelect,
            separatorGroup: epubSeparatorGroup
        },
        'html': {
            container: htmlSettingsContainer,
            titleEl: htmlSettingsTitle,
            titleKey: 'htmlSettingsTitleText',
            icon: 'bi-filetype-html',
            modeSelect: htmlInsertModeSelect,
            separatorGroup: htmlSeparatorGroup
        }
    };

    /**
     * [REFACTORED] Updates the UI based on the selected workflow, using a configuration object.
     */
    function updateWorkflowUI() {
        const selectedWorkflow = workflowTypeSelect.value;
        const translations = i18nData[currentLang] || i18nData.zh;

        // Hide all workflow-specific containers
        Object.values(workflowConfigs).forEach(config => {
            if (config.container) config.container.style.display = 'none';
        });

        // --- Dynamic Numbering ---
        let currentStep = 1;
        const getStep = () => currentStep++;

        // 1. Workflow Selection (Always visible)
        document.querySelector('#headingZero button strong').innerHTML = `<i class="bi bi-diagram-3 me-2"></i>${getStep()}. ${translations.workflowTitle}`;

        // 2. Show and configure the selected workflow's panel
        const activeConfig = workflowConfigs[selectedWorkflow];
        if (activeConfig) {
            activeConfig.container.style.display = 'block';
            activeConfig.titleEl.innerHTML = `<i class="bi ${activeConfig.icon} me-2"></i>${getStep()}. ${translations[activeConfig.titleKey]}`;
            if (activeConfig.modeSelect) {
                updateSeparatorVisibility(activeConfig.modeSelect, activeConfig.separatorGroup);
            }
        }

        // 3. Renumber common sections
        aiSettingsTitle.innerHTML = `<i class="bi bi-robot me-2"></i>${getStep()}. ${translations.aiSettingsTitleText}`;
        if (translationSettingsAccordionItem.style.display !== 'none') {
            translationSettingsTitle.innerHTML = `<i class="bi bi-translate me-2"></i>${getStep()}. ${translations.translationSettingsTitleText}`;
        }
        glossaryGenSettingsTitle.innerHTML = `<i class="bi bi-journal-bookmark-fill me-2"></i>${getStep()}. ${translations.glossaryGenTitle}`;

        saveToStorage('translator_last_workflow', selectedWorkflow);
    }

    function updateSeparatorVisibility(modeSelect, separatorGroup) {
        const selectedMode = modeSelect.value;
        separatorGroup.style.display = (selectedMode === 'append' || selectedMode === 'prepend') ? 'block' : 'none';
    }

    /**
     * [REFACTORED] Generic function to update custom language input UI.
     * @param {HTMLSelectElement} selectEl - The language select element.
     * @param {HTMLElement} groupEl - The container for the custom input.
     * @param {HTMLInputElement} inputEl - The custom language text input.
     */
    function updateCustomLangUI(selectEl, groupEl, inputEl) {
        const isCustom = selectEl.value === 'custom';
        groupEl.style.display = isCustom ? 'block' : 'none';
        inputEl.required = isCustom;
    }


    // --- Other UI Update Functions ---
    function updateTranslationModeUI() {
        const skipTranslate = skipTranslationSwitch.checked;

        aiModelSettingsContainer.style.display = skipTranslate ? 'none' : 'block';
        translationSettingsAccordionItem.style.display = skipTranslate ? 'none' : 'block';

        // Make inputs not required when skipping translation
        baseUrlInput.required = !skipTranslate && platformSelect.value === 'custom';
        apikeyInput.required = false; // Always optional
        modelInput.required = !skipTranslate;

        if (!skipTranslate) {
            mainPlatformUpdater();
        }
        updateWorkflowUI(); // Call to update numbering
    }

    /**
     * [REFACTORED] Creates a reusable function to manage platform selection UI.
     * @param {object} elements - An object containing the DOM elements for this UI section.
     * @param {string} storagePrefix - The prefix for localStorage keys.
     * @returns {function} An updater function to be called on change.
     */
    function createPlatformUIUpdater(elements, storagePrefix) {
        const {
            platformSelect,
            apikeyInput,
            modelInput,
            baseUrlGroup,
            baseUrlInput,
            apiHref: platformApiHref,
            baseUrlDisplay
        } = elements;
        return () => {
            const selectedPlatformValue = platformSelect.value;
            apikeyInput.value = getFromStorage(`${storagePrefix}_${selectedPlatformValue}_apikey`);
            modelInput.value = getFromStorage(`${storagePrefix}_${selectedPlatformValue}_model_id`);

            const isCustom = selectedPlatformValue === 'custom';
            baseUrlGroup.style.display = isCustom ? 'block' : 'none';
            baseUrlInput.required = isCustom && !skipTranslationSwitch.checked;
            baseUrlInput.value = isCustom ? getFromStorage(`${storagePrefix}_custom_base_url`) : selectedPlatformValue;

            if (baseUrlDisplay) {
                baseUrlDisplay.textContent = baseUrlInput.value;
            }

            if (platformApiHref) {
                if (!isCustom && apiHrefMap[baseUrlInput.value]) {
                    platformApiHref.href = apiHrefMap[baseUrlInput.value];
                    platformApiHref.style.display = 'inline-block';
                } else {
                    platformApiHref.style.display = 'none';
                }
            }
            saveToStorage(`${storagePrefix}_last_platform`, selectedPlatformValue);
        };
    }

    const mainPlatformUpdater = createPlatformUIUpdater({
        platformSelect, apikeyInput, modelInput, baseUrlGroup, baseUrlInput, apiHref,
        baseUrlDisplay: mainBaseUrlDisplay
    }, 'translator_platform');

    /**
     * Updates the visibility of parsing options (formula/code OCR) based on the selected engine.
     * This acts as a factory for UI configuration.
     * @param {string} engine The selected parsing engine ('identity', 'mineru', 'docling').
     */
    function updateParsingOptionsVisibility(engine) {
        const optionsConfig = {
            identity: {showFormula: false, showCode: false},
            mineru: {showFormula: true, showCode: false},
            docling: {showFormula: true, showCode: true}
        };

        // Default to hiding options if engine is not in config
        const config = optionsConfig[engine] || {showFormula: false, showCode: false};

        formulaOcrSwitch.style.display = config.showFormula ? 'block' : 'none';
        codeOcrSwitch.style.display = config.showCode ? 'block' : 'none';
    }


    function updateConvertEnginUI(isLanguageChange = false) {
        if (!isLanguageChange) {
            const selectedEngin = convertEnginSelect.value;
            const isMineru = selectedEngin === 'mineru';
            mineruTokenGroup.style.display = isMineru ? 'block' : 'none';
            mineruModelVersionGroup.style.display = isMineru ? 'block' : 'none';
            mineruTokenInput.required = isMineru;

            updateParsingOptionsVisibility(selectedEngin);

            if (isMineru) {
                mineruTokenInput.value = getFromStorage('translator_mineru_token');
            }
            saveToStorage('translator_convert_engin', selectedEngin);
        } else {
            // Repopulate options with translated text
            const savedValue = convertEnginSelect.value;
            Array.from(convertEnginSelect.options).forEach(option => {
                const keyMap = {
                    'identity': 'engineOptionIdentity',
                    'mineru': 'engineOptionMineru',
                    'docling': 'engineOptionDocling'
                };
                option.textContent = getText(keyMap[option.value] || option.value, option.value);
            });
            convertEnginSelect.value = savedValue;
        }
    }

    // [MODIFIED] Glossary Generation UI Functions
    function updateGlossaryGenUI() {
        const isEnabled = glossaryGenerateEnableSwitch.checked;
        glossaryAgentOptionsContainer.style.display = isEnabled ? 'block' : 'none';
        if (isEnabled) {
            updateGlossaryCustomConfigUI();
        }
    }

    function updateGlossaryCustomConfigUI() {
        const choice = document.querySelector('input[name="glossary_agent_config_choice"]:checked').value;
        glossaryAgentCustomConfigContainer.style.display = choice === 'custom' ? 'block' : 'none';
    }

    const glossaryAgentPlatformUpdater = createPlatformUIUpdater({
        platformSelect: glossaryAgentPlatformSelect,
        apikeyInput: glossaryAgentKeyInput,
        modelInput: glossaryAgentModelIdInput,
        baseUrlGroup: glossaryAgentBaseUrlGroup,
        baseUrlInput: glossaryAgentBaseUrlInput,
        baseUrlDisplay: glossaryBaseUrlDisplay
    }, 'glossary_agent_platform');


    function setupGlossaryAgentPlatformUI() {
        glossaryAgentPlatformSelect.innerHTML = platformSelect.innerHTML;
        glossaryAgentPlatformSelect.value = getFromStorage('glossary_agent_last_platform', 'https://api.openai.com/v1');
        glossaryAgentPlatformUpdater();
    }


    function createSliderUpdater(slider, display, resetBtn, key, params) {
        return () => {
            const value = slider.value;
            display.textContent = value;
            resetBtn.style.visibility = value !== String(params[key]) ? 'visible' : 'hidden';
            saveToStorage(key, value);
        };
    }

    function setupSlider(slider, display, resetBtn, key, params) {
        slider.value = getFromStorage(key, params[key]);
        const updater = createSliderUpdater(slider, display, resetBtn, key, params);
        slider.addEventListener('input', updater);
        resetBtn.addEventListener('click', () => {
            slider.value = params[key];
            updater();
        });
        updater(); // Initial call
    }

    function updateTaskPlaceholderVisibility() {
        noTaskPlaceholder.style.display = Object.keys(tasks).length === 0 ? 'block' : 'none';
    }

    function saveTaskIds() {
        if (isAdminMode) return;
        const submittedTaskIds = Object.values(tasks)
            .map(task => task.state.backendTaskId)
            .filter(id => id);
        saveToStorage('active_task_ids', JSON.stringify(submittedTaskIds));
    }

    // --- Task Card Management ---
    function createTaskCard(backendTaskId = null, restoreState = false) {
        const cardId = backendTaskId || generateCardId();
        if (tasks[cardId]) return; // Avoid duplicate cards

        const cardFragment = taskCardTemplate.content.cloneNode(true);
        const cardElement = cardFragment.querySelector('.task-card');
        cardElement.dataset.cardId = cardId;

        // Translate the new card immediately
        const translations = i18nData[currentLang] || i18nData.zh;
        cardElement.querySelectorAll('[data-i18n]').forEach(el => el.innerHTML = translations[el.dataset.i18n] || el.innerHTML);
        cardElement.querySelectorAll('[data-i18n-placeholder]').forEach(el => el.placeholder = translations[el.dataset.i18nPlaceholder] || el.placeholder);


        const elements = {
            card: cardElement,
            taskIdDisplay: cardElement.querySelector('.task-id-display'),
            removeBtn: cardElement.querySelector('.remove-task-btn'),
            fileInput: cardElement.querySelector('.file-input'),
            fileDropArea: cardElement.querySelector('.file-drop-area'),
            fileDropDefault: cardElement.querySelector('.file-drop-default'),
            fileDropSelected: cardElement.querySelector('.file-drop-selected'),
            fileNameDisplayWrapper: cardElement.querySelector('.file-name-display-wrapper'),
            fileNameDisplay: cardElement.querySelector('.file-name-display'),
            logArea: cardElement.querySelector('.log-area'),
            statusMessage: cardElement.querySelector('.status-message'),
            downloadButtons: cardElement.querySelector('.download-buttons'),
            downloadMenuContainer: cardElement.querySelector('.download-menu-container'),
            previewBtn: cardElement.querySelector('.preview-html-btn'),
            startBtn: cardElement.querySelector('.start-translate-btn'),
            // [NEW] Attachment elements
            attachmentBtnGroup: cardElement.querySelector('.attachment-btn-group'),
            attachmentMenuContainer: cardElement.querySelector('.attachment-menu-container'),
        };

        if (restoreState && backendTaskId) {
            elements.taskIdDisplay.innerHTML = `<code>${backendTaskId}</code>`;
        }

        tasks[cardId] = {
            elements,
            state: {
                backendTaskId: backendTaskId,
                isTranslating: false,
                file: null,
                htmlUrl: null,
                fileNameStem: null,
                isSubmitted: restoreState,
                downloads: {},
                attachment: {},
                workflow: null
            },
            intervals: {
                log: null,
                status: null
            }
        };

        addEventListenersToCard(cardId);

        taskContainer.prepend(cardElement);
        updateTaskPlaceholderVisibility();

        if (restoreState && backendTaskId) {
            pollStatus(backendTaskId, true);
        }
    }

    async function releaseTask(backendTaskId) {
        try {
            await fetch(`/service/release/${backendTaskId}`, {method: 'POST'});
            console.log(`[${backendTaskId}] Release request sent to backend.`);
        } catch (error) {
            console.error(`[${backendTaskId}] Failed to send release request:`, error);
        }
    }

    async function removeTask(cardId) {
        const task = tasks[cardId];
        if (!task) return;

        const backendTaskId = task.state.backendTaskId;
        if (backendTaskId) {
            stopPolling(backendTaskId);
            await releaseTask(backendTaskId);
        }

        task.elements.card.remove();
        delete tasks[cardId];

        saveTaskIds();
        updateTaskPlaceholderVisibility();
    }

    function addEventListenersToCard(cardId) {
        const {elements} = tasks[cardId];

        elements.card.addEventListener('click', () => {
            const task = tasks[cardId];
            if (task && task.state.workflow) {
                workflowTypeSelect.value = task.state.workflow;
                updateWorkflowUI();
            }
        });

        elements.removeBtn.addEventListener('click', () => removeTask(cardId));

        elements.fileDropArea.addEventListener('click', () => elements.fileInput.click());
        elements.fileInput.addEventListener('change', () => handleFileSelect(cardId));
        ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
            elements.fileDropArea.addEventListener(eventName, e => {
                e.preventDefault();
                e.stopPropagation();
            }, false);
        });
        ['dragenter', 'dragover'].forEach(eventName => {
            elements.fileDropArea.addEventListener(eventName, () => elements.fileDropArea.classList.add('drag-over'), false);
        });
        ['dragleave', 'drop'].forEach(eventName => {
            elements.fileDropArea.addEventListener(eventName, () => elements.fileDropArea.classList.remove('drag-over'), false);
        });
        elements.fileDropArea.addEventListener('drop', e => {
            if (e.dataTransfer.files.length > 0) {
                elements.fileInput.files = e.dataTransfer.files;
                handleFileSelect(cardId);
            }
        }, false);

        elements.startBtn.addEventListener('click', () => {
            if (tasks[cardId].state.isTranslating) {
                cancelTranslation(cardId);
            } else {
                startTranslation(cardId);
            }
        });
    }

    function handleFileSelect(cardId) {
        const {elements, state} = tasks[cardId];
        const file = elements.fileInput.files[0];
        if (file) {
            state.file = file;
            elements.fileNameDisplay.textContent = file.name;
            elements.fileNameDisplayWrapper.style.display = 'block';
            elements.fileDropArea.classList.add('file-selected');
            elements.fileDropDefault.style.display = 'none';
            elements.fileDropSelected.style.display = 'block';
            elements.fileDropArea.classList.remove('input-error');
            elements.fileNameDisplay.classList.remove('input-error-text');

            if (autoWorkflowSwitch.checked) {
                const fileExtension = file.name.split('.').pop().toLowerCase();
                const targetWorkflow = workflowExtensionMap[fileExtension] || defaultAutoWorkflow;
                workflowTypeSelect.value = targetWorkflow;
                updateWorkflowUI();
            }
        }
    }

    function buildGlossaryAgentConfig() {
        if (!glossaryGenerateEnableSwitch.checked) {
            return {config: null, isValid: true};
        }

        const agentChoice = document.querySelector('input[name="glossary_agent_config_choice"]:checked').value;

        if (agentChoice === 'same') {
            // When using the same config as the translator, pass null. The backend will handle it.
            return {config: null, isValid: true};
        }

        // Handle 'custom' config
        let isValid = true;
        // API key is not required anymore, so it's removed from validation.
        const requiredAgentInputs = [glossaryAgentModelIdInput];
        if (glossaryAgentPlatformSelect.value === 'custom') {
            requiredAgentInputs.push(glossaryAgentBaseUrlInput);
        }
        requiredAgentInputs.forEach(input => {
            input.classList.remove('is-invalid');
            if (!input.value.trim()) {
                input.classList.add('is-invalid');
                isValid = false;
            }
        });

        let glossaryTargetLanguage = glossaryAgentToLangSelect.value;
        if (glossaryTargetLanguage === 'custom') {
            glossaryTargetLanguage = glossaryAgentCustomLangInput.value.trim();
            glossaryAgentCustomLangInput.classList.remove('is-invalid');
            if (!glossaryTargetLanguage) {
                glossaryAgentCustomLangInput.classList.add('is-invalid');
                isValid = false;
            }
        }

        if (!isValid) {
            return {config: null, isValid: false};
        }

        // Build the agentConfig object with keys matching the backend Python model.
        const agentConfig = {
            base_url: glossaryAgentBaseUrlInput.value,
            api_key: glossaryAgentKeyInput.value,
            model_id: glossaryAgentModelIdInput.value,
            to_lang: glossaryTargetLanguage,
            temperature: parseFloat(glossaryAgentTemperatureSlider.value),
            concurrent: parseInt(glossaryAgentConcurrentSlider.value, 10),
            thinking: document.querySelector('input[name="glossary_agent_thinking"]:checked')?.value || 'default',
        };

        return {config: agentConfig, isValid: true};
    }


    function validateAndBuildPayload() {
        const skipTranslate = skipTranslationSwitch.checked;
        let isValid = true;

        // --- Common settings validation ---
        if (!skipTranslate) {
            // API key is not required anymore, so it's removed from validation.
            const requiredCommonInputs = [modelInput];
            if (platformSelect.value === 'custom') requiredCommonInputs.push(baseUrlInput);

            requiredCommonInputs.forEach(input => {
                input.classList.remove('is-invalid');
                if (!input.value.trim()) {
                    input.classList.add('is-invalid');
                    isValid = false;
                }
            });

            if (toLangSelect.value === 'custom') {
                customLangInput.classList.remove('is-invalid');
                if (!customLangInput.value.trim()) {
                    customLangInput.classList.add('is-invalid');
                    isValid = false;
                }
            }
        }

        // --- Base Payload Construction ---
        const targetLanguage = toLangSelect.value === 'custom' ? customLangInput.value.trim() : toLangSelect.value;
        const basePayload = {
            skip_translate: skipTranslate,
            base_url: baseUrlInput.value,
            api_key: apikeyInput.value,
            model_id: modelInput.value,
            to_lang: targetLanguage,
            thinking: document.querySelector('input[name="thinking"]:checked')?.value || 'disable',
            chunk_size: parseInt(chunkSizeSlider.value, 10),
            concurrent: parseInt(concurrentSlider.value, 10),
            temperature: parseFloat(temperatureSlider.value),
            custom_prompt: customPromptTranslateArea.value || null,
            glossary_dict: Object.keys(glossaryData).length > 0 ? glossaryData : null,
        };

        // --- Glossary Generation Config ---
        const glossaryResult = buildGlossaryAgentConfig();
        if (!glossaryResult.isValid) isValid = false;
        basePayload.glossary_generate_enable = glossaryGenerateEnableSwitch.checked;
        basePayload.glossary_agent_config = glossaryResult.config;

        // --- Workflow-specific validation and payload building ---
        const workflowType = workflowTypeSelect.value;
        let workflowPayload = {...basePayload, workflow_type: workflowType};

        switch (workflowType) {
            case 'markdown_based':
                if (convertEnginSelect.value === 'mineru' && !mineruTokenInput.value.trim()) {
                    mineruTokenInput.classList.add('is-invalid');
                    isValid = false;
                } else {
                    mineruTokenInput.classList.remove('is-invalid');
                }
                Object.assign(workflowPayload, {
                    convert_engine: convertEnginSelect.value || null,
                    mineru_token: mineruTokenInput.value || null,
                    formula_ocr: formulaCheckbox.checked,
                    code_ocr: codeCheckbox.checked,
                    model_version: modelVersionSelect.value,
                });
                break;
            case 'json':
                const jsonPaths = jsonPathsTextarea.value.trim().split('\n').map(p => p.trim()).filter(p => p);
                if (jsonPaths.length === 0) {
                    jsonPathsTextarea.classList.add('is-invalid');
                    isValid = false;
                } else {
                    jsonPathsTextarea.classList.remove('is-invalid');
                }
                workflowPayload.json_paths = jsonPaths;
                break;
            case 'xlsx':
                const translateRegions = xlsxTranslateRegionsTextarea.value.trim().split('\n').map(p => p.trim()).filter(p => p);
                Object.assign(workflowPayload, {
                    insert_mode: xlsxInsertModeSelect.value,
                    separator: xlsxSeparatorInput.value.replace(/\\n/g, '\n'),
                    translate_regions: translateRegions.length > 0 ? translateRegions : null
                });
                break;
            case 'txt':
            case 'docx':
            case 'srt':
            case 'epub':
            case 'html':
                const controls = {
                    txt: {mode: txtInsertModeSelect, sep: txtSeparatorInput},
                    docx: {mode: docxInsertModeSelect, sep: docxSeparatorInput},
                    srt: {mode: srtInsertModeSelect, sep: srtSeparatorInput},
                    epub: {mode: epubInsertModeSelect, sep: epubSeparatorInput},
                    html: {mode: htmlInsertModeSelect, sep: htmlSeparatorInput},
                }[workflowType];
                Object.assign(workflowPayload, {
                    insert_mode: controls.mode.value,
                    separator: controls.sep.value.replace(/\\n/g, '\n')
                });
                break;
        }

        return {payload: isValid ? workflowPayload : null, isValid};
    }

    async function startTranslation(cardId) {
        const {elements, state} = tasks[cardId];

        if (!state.file) {
            elements.statusMessage.textContent = getText('status_selectFileFirst');
            elements.statusMessage.className = 'status-message small text-danger';
            elements.fileDropArea.classList.add('input-error');
            return;
        }

        const {payload, isValid} = validateAndBuildPayload();
        state.workflow = workflowTypeSelect.value; // Store the workflow type for the task

        if (!isValid) {
            elements.statusMessage.textContent = getText('status_fillRequired');
            elements.statusMessage.className = 'status-message small text-danger';
            // Find the first invalid input and scroll to it
            const firstInvalid = document.querySelector('.is-invalid, .input-error');
            if (firstInvalid) {
                firstInvalid.scrollIntoView({behavior: 'smooth', block: 'center'});
            }
            return;
        }

        // --- Release old task and start new one ---
        const oldBackendTaskId = state.backendTaskId;
        if (oldBackendTaskId) {
            await releaseTask(oldBackendTaskId);
            state.backendTaskId = null;
        }

        state.isTranslating = true;
        elements.startBtn.disabled = true;
        elements.startBtn.innerHTML = `<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span> <span data-i18n="btn_initializing">${getText('btn_initializing')}</span>`;
        elements.logArea.innerHTML = '';
        elements.statusMessage.textContent = getText('status_encodingAndSubmitting');
        elements.statusMessage.className = 'status-message small text-muted';
        elements.downloadButtons.style.display = 'none';
        elements.card.querySelector('.progress')?.remove(); // Make sure no old progress bar exists

        // Temporarily add a spinner next to the status message
        elements.statusMessage.insertAdjacentHTML('afterend', '<div class="spinner-border spinner-border-sm ms-2" role="status" id="temp-spinner-' + cardId + '"><span class="visually-hidden">Loading...</span></div>');


        try {
            const fileContentBase64 = await fileToBase64(state.file);
            const finalRequest = {
                file_name: state.file.name,
                file_content: fileContentBase64,
                payload: payload
            };

            const response = await fetch('/service/translate', {
                method: 'POST',
                headers: {'Content-Type': 'application/json'},
                body: JSON.stringify(finalRequest)
            });
            const result = await response.json();

            if (response.ok && result.task_started) {
                const backendTaskId = result.task_id;
                state.backendTaskId = backendTaskId;
                state.isSubmitted = true;
                elements.taskIdDisplay.innerHTML = `<code>${backendTaskId}</code>`;
                elements.taskIdDisplay.classList.remove('task-id-placeholder');

                saveTaskIds();

                elements.statusMessage.textContent = result.message || getText('status_requestOk');
                elements.statusMessage.className = 'status-message small text-info';
                elements.startBtn.innerHTML = `<i class="bi bi-stop-circle-fill me-1"></i><span data-i18n="btn_cancelTranslation">${getText('btn_cancelTranslation')}</span>`;
                elements.startBtn.classList.replace('btn-primary', 'btn-danger');
                elements.startBtn.disabled = false;

                startPolling(backendTaskId);
            } else {
                let errorMessage = result.detail || result.message || `${getText('status_requestFail')} (${response.status})`;
                if (typeof errorMessage === 'object') errorMessage = JSON.stringify(errorMessage);
                throw new Error(errorMessage);
            }
        } catch (error) {
            state.isSubmitted = false;
            console.error('Request failed:', error);
            elements.statusMessage.textContent = `${getText('status_initFail')}: ${error.message}`;
            elements.statusMessage.className = 'status-message small text-danger';
            elements.startBtn.innerHTML = `<i class="bi bi-play-fill me-1"></i><span data-i8n="taskCardStartBtn">${getText('taskCardStartBtn')}</span>`;
            elements.startBtn.classList.replace('btn-danger', 'btn-primary');
            elements.startBtn.disabled = false;
            document.getElementById('temp-spinner-' + cardId)?.remove();
            state.isTranslating = false;
        }
    }


    async function cancelTranslation(cardId) {
        const task = tasks[cardId];
        if (!task || !task.state.backendTaskId) return;

        const {elements} = task;
        const backendTaskId = task.state.backendTaskId;

        elements.startBtn.disabled = true;
        elements.startBtn.innerHTML = `<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span> <span data-i18n="status_cancelling">${getText('status_cancelling')}</span>`;

        try {
            const response = await fetch(`/service/cancel/${backendTaskId}`, {method: 'POST'});
            const result = await response.json();

            if (response.ok && result.cancelled) {
                elements.statusMessage.textContent = result.message || getText('status_cancelSent');
                elements.statusMessage.className = 'status-message small text-warning';
            } else {
                throw new Error(result.message || getText('status_cancelFail'));
            }
        } catch (error) {
            elements.statusMessage.textContent = `${getText('status_cancelFail')}: ${error.message}`;
            elements.statusMessage.className = 'status-message small text-danger';
            elements.startBtn.disabled = false;
            elements.startBtn.innerHTML = `<i class="bi bi-stop-circle-fill me-1"></i><span data-i18n="btn_cancelTranslation">${getText('btn_cancelTranslation')}</span>`;
        }
    }

    // --- Polling ---
    function startPolling(backendTaskId) {
        stopPolling(backendTaskId);
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) return;

        card.intervals.log = setInterval(() => pollLogs(backendTaskId), 2000);
        card.intervals.status = setInterval(() => pollStatus(backendTaskId), 1500);
        pollLogs(backendTaskId);
        pollStatus(backendTaskId);
    }

    function stopPolling(backendTaskId) {
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) return;

        const {intervals} = card;
        if (intervals.log) clearInterval(intervals.log);
        if (intervals.status) clearInterval(intervals.status);
        intervals.log = null;
        intervals.status = null;
    }

    async function pollLogs(backendTaskId) {
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) return;
        const {elements} = card;

        try {
            const response = await fetch(`/service/logs/${backendTaskId}`);
            if (!response.ok) return;
            const data = await response.json();
            if (data.logs && data.logs.length > 0) {
                elements.logArea.innerHTML += data.logs.map(log => log.replace(/</g, "<").replace(/>/g, ">") + '<br>').join('');
                elements.logArea.scrollTop = elements.logArea.scrollHeight;
            }
        } catch (error) {
            console.warn(`[${backendTaskId}] Error polling logs:`, error);
        }
    }

    async function pollStatus(backendTaskId, isRestore = false) {
        const card = Object.values(tasks).find(t => t.state.backendTaskId === backendTaskId);
        if (!card) {
            if (isRestore) {
                console.warn(`Restored task ${backendTaskId} not found in UI, removing from storage.`);
                const savedTaskIds = JSON.parse(getFromStorage('active_task_ids', '[]'));
                const newIds = savedTaskIds.filter(id => id !== backendTaskId);
                saveToStorage('active_task_ids', JSON.stringify(newIds));
            }
            return;
        }
        const {elements, state} = card;
        const cardId = elements.card.dataset.cardId;

        try {
            const response = await fetch(`/service/status/${backendTaskId}`);
            if (!response.ok) {
                if (response.status === 404 && isRestore) {
                    console.warn(`Task ${backendTaskId} not found on server (404). Removing from UI.`);
                    await removeTask(cardId);
                }
                return;
            }
            const status = await response.json();

            if (status.original_filename && (!state.file || isRestore)) {
                elements.fileNameDisplay.textContent = status.original_filename;
                elements.fileNameDisplayWrapper.style.display = 'block';
            }

            elements.statusMessage.textContent = status.status_message || getText('status_gettingStatus');
            elements.statusMessage.className = `status-message small ${status.error_flag ? 'text-danger' : 'text-info'}`;

            if (!status.is_processing) {
                pollLogs(backendTaskId); // Get final logs
                stopPolling(backendTaskId);
                state.isTranslating = false;
                elements.startBtn.disabled = false;
                elements.startBtn.innerHTML = `<i class="bi bi-arrow-clockwise me-1"></i><span data-i18n="btn_reTranslate">${getText('btn_reTranslate')}</span>`;
                elements.startBtn.classList.replace('btn-danger', 'btn-primary');
                document.getElementById('temp-spinner-' + cardId)?.remove();

                if (status.download_ready && !status.error_flag) {
                    elements.statusMessage.className = 'status-message small text-success';
                    updateResultButtons(cardId, status);
                } else {
                    elements.downloadButtons.style.display = 'none';
                }
            } else {
                state.isTranslating = true;
                elements.startBtn.innerHTML = `<i class="bi bi-stop-circle-fill me-1"></i><span data-i18n="btn_cancelTranslation">${getText('btn_cancelTranslation')}</span>`;
                elements.startBtn.classList.replace('btn-primary', 'btn-danger');
                elements.startBtn.disabled = false;
                elements.downloadButtons.style.display = 'none';

                if (isRestore && !card.intervals.status) {
                    startPolling(backendTaskId);
                }
            }

        } catch (error) {
            console.error(`[${backendTaskId}] Error polling status:`, error);
            elements.statusMessage.textContent = getText('status_updateError');
            elements.statusMessage.className = 'status-message small text-danger';
        }
    }

    // --- Download and Preview ---
    function populateDownloadMenu(menuElement, downloads, cardId) {
        menuElement.innerHTML = ''; // Clear existing items
        if (!downloadMenuTemplate) return false;

        const content = downloadMenuTemplate.content.cloneNode(true);
        // Translate the template before using
        content.querySelectorAll('[data-i18n]').forEach(el => el.innerHTML = getText(el.dataset.i18n));
        let anyLinkAdded = false;

        const setupLink = (selector, key) => {
            const li = content.querySelector(selector);
            if (li && downloads[key]) {
                li.querySelector('a').href = downloads[key];
                menuElement.appendChild(li);
                anyLinkAdded = true;
            }
        };

        setupLink('.download-item-md', 'markdown');
        setupLink('.download-item-md-zip', 'markdown_zip');
        setupLink('.download-item-txt', 'txt');
        setupLink('.download-item-json', 'json');
        setupLink('.download-item-docx', 'docx');
        setupLink('.download-item-xlsx', 'xlsx');
        setupLink('.download-item-csv', 'csv');
        setupLink('.download-item-srt', 'srt');
        setupLink('.download-item-epub', 'epub');
        setupLink('.download-item-html', 'html');

        // Special handler for PDF, which is generated on the fly
        const pdfLi = content.querySelector('.download-item-pdf');
        if (pdfLi && downloads.html) {
            const pdfLink = pdfLi.querySelector('a');
            pdfLink.href = '#';
            pdfLink.onclick = (e) => {
                e.preventDefault();
                downloadPdf(cardId);
            };
            menuElement.appendChild(pdfLi);
            anyLinkAdded = true;
        }

        return anyLinkAdded;
    }


    function updateResultButtons(cardId, status) {
        const {elements, state} = tasks[cardId];
        const {downloads, attachment} = status;
        state.downloads = downloads;
        state.attachment = attachment;

        const {
            previewBtn,
            downloadButtons,
            downloadMenuContainer,
            attachmentBtnGroup,
            attachmentMenuContainer
        } = elements;

        // Reset visibility of individual components first
        previewBtn.style.display = 'none';
        attachmentBtnGroup.style.display = 'none';
        let anyDownloadAvailable = false;
        let anyAttachmentAvailable = false;
        let anyPreviewAvailable = false;

        // Handle preview
        if (downloads && downloads.html) {
            state.htmlUrl = downloads.html;
            state.fileNameStem = status.original_filename_stem;
            previewBtn.style.display = 'inline-block';
            previewBtn.onclick = () => setupPreview(cardId);
            anyPreviewAvailable = true;
        }

        // Handle standard downloads
        if (downloads) {
            anyDownloadAvailable = populateDownloadMenu(downloadMenuContainer, downloads, cardId);
        }

        // Handle attachments
        if (attachment && Object.keys(attachment).length > 0) {
            attachmentMenuContainer.innerHTML = ''; // Clear previous items
            Object.entries(attachment).forEach(([identifier, url]) => {
                const li = document.createElement('li');
                const a = document.createElement('a');
                a.className = 'dropdown-item';
                a.href = url;
                // A simple icon and the identifier text
                a.innerHTML = `<i class="bi bi-file-earmark-arrow-down me-2"></i>${identifier}`;
                li.appendChild(a);
                attachmentMenuContainer.appendChild(li);
            });
            attachmentBtnGroup.style.display = 'inline-block';
            anyAttachmentAvailable = true;
        }


        // Set visibility of the main container
        if (anyPreviewAvailable || anyDownloadAvailable || anyAttachmentAvailable) {
            downloadButtons.style.display = 'flex'; // Use flex for proper alignment
        } else {
            downloadButtons.style.display = 'none';
        }
    }


    function setupPreview(cardId) {
        const {state} = tasks[cardId];
        if (!state.htmlUrl) return;

        const existingOriginalContent = originalPreviewPane.querySelector('iframe, pre, p');
        if (existingOriginalContent) existingOriginalContent.remove();
        translatedPreviewFrame.src = 'about:blank';
        translatedPreviewFrame.srcdoc = getText('preview_loading');

        setPreviewDisplayMode('bilingual');
        previewOffcanvas.show();

        const menu = document.getElementById('previewDownloadMenu');
        populateDownloadMenu(menu, state.downloads, cardId);


        if (state.file) {
            const fileType = state.file.type;
            const fileExtension = state.file.name.split('.').pop().toLowerCase();
            const textLikeExtensions = ['md', 'json', 'xml', 'log', 'py', 'js', 'css', 'java', 'c', 'cpp', 'h', 'hpp', 'cs', 'rb', 'php', 'swift', 'kt', 'go', 'rs', 'ts', 'txt', 'srt'];

            if (fileType.startsWith('text/') || textLikeExtensions.includes(fileExtension)) {
                const pre = document.createElement('pre');
                state.file.text()
                    .then(text => pre.textContent = text)
                    .catch(() => pre.textContent = getText('preview_cantReadOriginal'));
                originalPreviewPane.appendChild(pre);
            } else if (['application/pdf', 'text/html'].includes(fileType) || ['html', 'htm'].includes(fileExtension)) {
                const iframe = document.createElement('iframe');
                iframe.src = URL.createObjectURL(state.file);
                originalPreviewPane.appendChild(iframe);
            } else {
                const p = document.createElement('p');
                p.className = 'p-3 text-muted';
                p.textContent = `${getText('preview_cantPreviewType')} (${fileType || 'unknown: ' + fileExtension}).`;
                originalPreviewPane.appendChild(p);
            }
        } else {
            const p = document.createElement('p');
            p.className = 'p-3 text-muted';
            p.textContent = getText('preview_noOriginalCache');
            originalPreviewPane.appendChild(p);
        }

        fetch(state.htmlUrl)
            .then(resp => resp.ok ? resp.text() : Promise.reject(`HTTP error ${resp.status}`))
            .then(html => {
                translatedPreviewFrame.srcdoc = html;
            })
            .catch(err => {
                console.error('Preview fetch failed:', err);
                translatedPreviewFrame.srcdoc = `${getText('preview_loadFailed')}<p>${err.message}</p>`;
            });
    }

    function downloadPdf(cardId) {
        const {elements, state} = tasks[cardId];
        if (!state.htmlUrl) return;

        const toast = new bootstrap.Toast(document.createElement('div'), {
            autohide: true,
            delay: 3000
        });
        toast._element.classList.add('toast', 'position-fixed', 'top-0', 'end-0', 'p-3', 'bg-info', 'text-white');
        toast._element.innerHTML = `<div class="toast-body">${getText('pdf_preparing')}</div>`;
        document.body.appendChild(toast._element);
        toast.show();

        fetch(state.htmlUrl)
            .then(resp => resp.ok ? resp.text() : Promise.reject(`HTTP error ${resp.status}`))
            .then(html => {
                printFrameEl.onload = () => {
                    setTimeout(() => {
                        try {
                            printFrameEl.contentWindow.focus();
                            printFrameEl.contentWindow.print();
                        } catch (err) {
                            alert(getText('pdf_print_failed'));
                        } finally {
                            printFrameEl.onload = null;
                            printFrameEl.srcdoc = ''; // Clear content
                        }
                    }, 500);
                };
                printFrameEl.srcdoc = html;
            })
            .catch(err => {
                alert(getText('pdf_fetch_failed'));
            });
    }

    function setPreviewDisplayMode(mode) {
        if (previewSplitInstance) {
            previewSplitInstance.destroy();
            previewSplitInstance = null;
        }

        const isMobileView = window.innerWidth < 992;
        const splitContainer = document.querySelector('.preview-split-container');
        originalPreviewContainer.style.display = 'flex';
        translatedPreviewContainer.style.display = 'flex';
        [originalPreviewContainer, translatedPreviewContainer].forEach(el => {
            el.style.width = '';
            el.style.height = '';
        });
        splitContainer.style.flexDirection = isMobileView ? 'column' : 'row';

        if (mode === 'bilingual') {
            previewOffcanvasLabel.textContent = getText('preview_bilingual');

            if (isMobileView) {
                previewSplitInstance = Split(['#originalPreviewContainer', '#translatedPreviewContainer'], {
                    direction: 'vertical', sizes: [50, 50], minSize: 150, gutterSize: 10, cursor: 'row-resize',
                });
            } else {
                previewSplitInstance = Split(['#originalPreviewContainer', '#translatedPreviewContainer'], {
                    direction: 'horizontal', sizes: [50, 50], minSize: 200, gutterSize: 10, cursor: 'col-resize',
                });
            }

            setBilingualViewBtn.classList.add('btn-primary');
            setBilingualViewBtn.classList.remove('btn-outline-primary');
            setTranslatedOnlyViewBtn.classList.remove('btn-primary');
            setTranslatedOnlyViewBtn.classList.add('btn-outline-primary');

        } else { // mode === 'translatedOnly'
            previewOffcanvasLabel.textContent = getText('preview_translatedOnly');
            originalPreviewContainer.style.display = 'none';

            if (isMobileView) {
                translatedPreviewContainer.style.height = '100%';
            } else {
                translatedPreviewContainer.style.width = '100%';
            }

            setTranslatedOnlyViewBtn.classList.add('btn-primary');
            setTranslatedOnlyViewBtn.classList.remove('btn-outline-primary');
            setBilingualViewBtn.classList.remove('btn-primary');
            setBilingualViewBtn.classList.add('btn-outline-primary');
        }
    }

    // --- Password Toggle Functionality ---
    function setupPasswordToggle(button) {
        const targetId = button.dataset.target;
        const passwordInput = document.getElementById(targetId);
        const icon = button.querySelector('i');

        button.addEventListener('click', () => {
            if (passwordInput.type === 'password') {
                passwordInput.type = 'text';
                icon.classList.remove('bi-eye-slash');
                icon.classList.add('bi-eye');
            } else {
                passwordInput.type = 'password';
                icon.classList.remove('bi-eye');
                icon.classList.add('bi-eye-slash');
            }
        });
    }


    // --- Initialization ---

    /**
     * [REFACTORED] Restores user settings from localStorage using a configuration array.
     */
    function restoreSettings(settingsConfig) {
        settingsConfig.forEach(setting => {
            const savedValue = getFromStorage(setting.key, setting.defaultValue);
            if (setting.type === 'boolean') {
                setting.element.checked = savedValue === 'true';
            } else if (setting.type === 'radio') {
                const radioToSelect = document.querySelector(`${setting.selector}[value="${savedValue}"]`);
                if (radioToSelect) radioToSelect.checked = true;
            } else {
                setting.element.value = savedValue;
            }
        });
    }

    /**
     * [REFACTORED] Sets up event listeners for saving settings using a configuration array.
     */
    function setupEventListeners(listenersConfig) {
        listenersConfig.forEach(config => {
            const handler = config.handler || ((e) => {
                const value = e.target.type === 'checkbox' ? e.target.checked : e.target.value;
                if (config.saveKey) saveToStorage(config.saveKey, value);
                if (config.postHook) config.postHook();
            });
            config.element.addEventListener(config.event, handler);
        });
    }


    async function init() {
        // Step 1: Fetch i18n data
        try {
            const response = await fetch("/static/i18nData.json");
            if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
            i18nData = await response.json();
        } catch (error) {
            console.error("Fatal: Failed to load i18n data.", error);
            currentLang = getFromStorage('ui_language') || (navigator.language.toLowerCase().startsWith('en') ? 'en' : 'zh');
            alert(getText('init_i18n_failed_alert'));
            return;
        }

        // Step 2: Fetch other backend data
        isAdminMode = window.location.pathname.includes('/admin');
        try {
            const [metaRes, enginRes, paramsRes] = await Promise.all([
                fetch("/service/meta"), fetch('/service/engin-list'), fetch("/service/default-params")
            ]);
            if (!metaRes.ok || !enginRes.ok || !paramsRes.ok) throw new Error("Failed to fetch initial data.");

            const meta = await metaRes.json();
            versionDisplay.textContent = `v${meta.version}`;

            const enginList = await enginRes.json();
            convertEnginSelect.innerHTML = '<option value="identity"></option>'; // Default option ，选项显示"已经是markdown格式"
            enginList.forEach(engin => {
                const option = document.createElement('option');
                option.value = engin;
                convertEnginSelect.appendChild(option);
            });

            defaultParams = await paramsRes.json();
        } catch (error) {
            console.error("Initialization failed:", error);
            alert(getText('init_failed_alert'));
            return;
        }

        // Step 3: Initialize i18n system
        initI18n();

        // Step 4: [REFACTORED] Restore user settings and setup event listeners using config
        const settingsToRestore = [
            {element: workflowTypeSelect, key: 'translator_last_workflow', defaultValue: 'markdown_based'},
            {
                element: autoWorkflowSwitch,
                key: 'translator_auto_workflow_enabled',
                defaultValue: 'true',
                type: 'boolean'
            },
            {element: txtInsertModeSelect, key: 'translator_txt_insert_mode', defaultValue: 'replace'},
            {element: txtSeparatorInput, key: 'translator_txt_separator', defaultValue: '\\n'},
            {element: xlsxInsertModeSelect, key: 'translator_xlsx_insert_mode', defaultValue: 'replace'},
            {element: xlsxSeparatorInput, key: 'translator_xlsx_separator', defaultValue: '\\n'},
            {element: xlsxTranslateRegionsTextarea, key: 'translator_xlsx_translate_regions', defaultValue: ''},
            {element: docxInsertModeSelect, key: 'translator_docx_insert_mode', defaultValue: 'replace'},
            {element: docxSeparatorInput, key: 'translator_docx_separator', defaultValue: '\\n'},
            {element: srtInsertModeSelect, key: 'translator_srt_insert_mode', defaultValue: 'replace'},
            {element: srtSeparatorInput, key: 'translator_srt_separator', defaultValue: '\\n'},
            {element: epubInsertModeSelect, key: 'translator_epub_insert_mode', defaultValue: 'replace'},
            {element: epubSeparatorInput, key: 'translator_epub_separator', defaultValue: '\\n'},
            {element: htmlInsertModeSelect, key: 'translator_html_insert_mode', defaultValue: 'replace'},
            {element: htmlSeparatorInput, key: 'translator_html_separator', defaultValue: ' '},
            {element: jsonPathsTextarea, key: 'translator_json_paths', defaultValue: ''},
            {element: skipTranslationSwitch, key: 'translator_skip_translate', defaultValue: 'false', type: 'boolean'},
            {element: platformSelect, key: 'translator_last_platform', defaultValue: 'https://api.openai.com/v1'},
            {element: convertEnginSelect, key: 'translator_convert_engin', defaultValue: 'mineru'},
            {element: modelVersionSelect, key: 'translator_model_version', defaultValue: 'vlm'},
            {element: toLangSelect, key: 'translator_to_lang', defaultValue: '中文'},
            {element: customLangInput, key: 'translator_custom_to_lang', defaultValue: ''},
            {element: formulaCheckbox, key: 'translator_formula_ocr', defaultValue: 'true', type: 'boolean'},
            {element: codeCheckbox, key: 'translator_code_ocr', defaultValue: 'true', type: 'boolean'},
            {element: customPromptTranslateArea, key: 'custom_prompt', defaultValue: ''},
            {
                type: 'radio',
                selector: '#thinkingModeBtnGroup input[name="thinking"]',
                key: 'translator_thinking_mode',
                defaultValue: 'default'
            },
            // Glossary Gen Settings
            {
                element: glossaryGenerateEnableSwitch,
                key: 'glossary_generate_enable',
                defaultValue: 'false',
                type: 'boolean'
            },
            {
                type: 'radio',
                selector: 'input[name="glossary_agent_config_choice"]',
                key: 'glossary_agent_config_choice',
                defaultValue: 'same'
            },
            {element: glossaryAgentToLangSelect, key: 'glossary_agent_to_lang', defaultValue: '中文'},
            {element: glossaryAgentCustomLangInput, key: 'glossary_agent_custom_to_lang', defaultValue: ''},
            {
                type: 'radio',
                selector: 'input[name="glossary_agent_thinking"]',
                key: 'glossary_agent_thinking_mode',
                defaultValue: 'default'
            }
        ];
        restoreSettings(settingsToRestore);


        // Initial UI updates
        updateWorkflowUI();
        mainPlatformUpdater();
        updateConvertEnginUI();
        updateCustomLangUI(toLangSelect, customLangGroup, customLangInput);
        updateTranslationModeUI();

        setupGlossaryAgentPlatformUI();
        updateGlossaryGenUI();
        updateCustomLangUI(glossaryAgentToLangSelect, glossaryAgentCustomLangGroup, glossaryAgentCustomLangInput);

        // Setup sliders
        setupSlider(chunkSizeSlider, chunkSizeDisplay, chunkSizeReset, 'chunk_size', defaultParams);
        setupSlider(concurrentSlider, concurrentDisplay, concurrentReset, 'concurrent', defaultParams);
        setupSlider(temperatureSlider, temperatureDisplay, temperatureReset, 'temperature', defaultParams);
        const agentDefaultParams = { // Agent sliders default to main config defaults
            'glossary_agent_temperature': defaultParams.temperature,
            'glossary_agent_chunk_size': defaultParams.chunk_size,
            'glossary_agent_concurrent': defaultParams.concurrent
        };
        setupSlider(glossaryAgentTemperatureSlider, glossaryAgentTemperatureDisplay, glossaryAgentTemperatureReset, 'glossary_agent_temperature', agentDefaultParams);
        setupSlider(glossaryAgentChunkSizeSlider, glossaryAgentChunkSizeDisplay, glossaryAgentChunkSizeReset, 'glossary_agent_chunk_size', agentDefaultParams);
        setupSlider(glossaryAgentConcurrentSlider, glossaryAgentConcurrentDisplay, glossaryAgentConcurrentReset, 'glossary_agent_concurrent', agentDefaultParams);

        // Setup event listeners
        const eventListenersConfig = [
            // Main settings with save logic and UI updates
            {element: workflowTypeSelect, event: 'change', handler: updateWorkflowUI},
            {element: autoWorkflowSwitch, event: 'change', saveKey: 'translator_auto_workflow_enabled'},
            {
                element: txtInsertModeSelect,
                event: 'change',
                saveKey: 'translator_txt_insert_mode',
                postHook: () => updateSeparatorVisibility(txtInsertModeSelect, txtSeparatorGroup)
            },
            {
                element: xlsxInsertModeSelect,
                event: 'change',
                saveKey: 'translator_xlsx_insert_mode',
                postHook: () => updateSeparatorVisibility(xlsxInsertModeSelect, xlsxSeparatorGroup)
            },
            {
                element: docxInsertModeSelect,
                event: 'change',
                saveKey: 'translator_docx_insert_mode',
                postHook: () => updateSeparatorVisibility(docxInsertModeSelect, docxSeparatorGroup)
            },
            {
                element: srtInsertModeSelect,
                event: 'change',
                saveKey: 'translator_srt_insert_mode',
                postHook: () => updateSeparatorVisibility(srtInsertModeSelect, srtSeparatorGroup)
            },
            {
                element: epubInsertModeSelect,
                event: 'change',
                saveKey: 'translator_epub_insert_mode',
                postHook: () => updateSeparatorVisibility(epubInsertModeSelect, epubSeparatorGroup)
            },
            {
                element: htmlInsertModeSelect,
                event: 'change',
                saveKey: 'translator_html_insert_mode',
                postHook: () => updateSeparatorVisibility(htmlInsertModeSelect, htmlSeparatorGroup)
            },
            {
                element: skipTranslationSwitch,
                event: 'change',
                saveKey: 'translator_skip_translate',
                postHook: updateTranslationModeUI
            },
            {element: platformSelect, event: 'change', handler: mainPlatformUpdater},
            {element: convertEnginSelect, event: 'change', handler: () => updateConvertEnginUI(false)},
            {
                element: toLangSelect,
                event: 'change',
                saveKey: 'translator_to_lang',
                postHook: () => updateCustomLangUI(toLangSelect, customLangGroup, customLangInput)
            },
            // Simple value savers
            {element: txtSeparatorInput, event: 'input', saveKey: 'translator_txt_separator'},
            {element: xlsxSeparatorInput, event: 'input', saveKey: 'translator_xlsx_separator'},
            {element: xlsxTranslateRegionsTextarea, event: 'input', saveKey: 'translator_xlsx_translate_regions'},
            {element: docxSeparatorInput, event: 'input', saveKey: 'translator_docx_separator'},
            {element: srtSeparatorInput, event: 'input', saveKey: 'translator_srt_separator'},
            {element: epubSeparatorInput, event: 'input', saveKey: 'translator_epub_separator'},
            {element: htmlSeparatorInput, event: 'input', saveKey: 'translator_html_separator'},
            {element: jsonPathsTextarea, event: 'input', saveKey: 'translator_json_paths'},
            {
                element: apikeyInput,
                event: 'input',
                handler: e => saveToStorage(`translator_platform_${platformSelect.value}_apikey`, e.target.value)
            },
            {
                element: modelInput,
                event: 'input',
                handler: e => saveToStorage(`translator_platform_${platformSelect.value}_model_id`, e.target.value)
            },
            {
                element: baseUrlInput, event: 'input', handler: e => {
                    const newValue = e.target.value;
                    // 新增下面这行来更新显示区域
                    mainBaseUrlDisplay.textContent = newValue;
                    if (platformSelect.value === 'custom') {
                        saveToStorage('translator_platform_custom_base_url', newValue);
                    }
                }
            },
            {element: mineruTokenInput, event: 'input', saveKey: 'translator_mineru_token'},
            {element: modelVersionSelect, event: 'change', saveKey: 'translator_model_version'},
            {element: customLangInput, event: 'input', saveKey: 'translator_custom_to_lang'},
            {element: formulaCheckbox, event: 'change', saveKey: 'translator_formula_ocr'},
            {element: codeCheckbox, event: 'change', saveKey: 'translator_code_ocr'},
            {element: customPromptTranslateArea, event: 'input', saveKey: 'custom_prompt'},
            // Glossary Gen event listeners
            {
                element: glossaryGenerateEnableSwitch,
                event: 'change',
                saveKey: 'glossary_generate_enable',
                postHook: updateGlossaryGenUI
            },
            {element: glossaryAgentPlatformSelect, event: 'change', handler: glossaryAgentPlatformUpdater},
            {
                element: glossaryAgentBaseUrlInput, event: 'input', handler: e => {
                    const newValue = e.target.value;
                    // 新增下面这行来更新术语表的显示区域
                    glossaryBaseUrlDisplay.textContent = newValue;
                    if (glossaryAgentPlatformSelect.value === 'custom') {
                        saveToStorage('glossary_agent_platform_custom_baseurl', newValue);
                    }
                }
            },
            {
                element: glossaryAgentKeyInput,
                event: 'input',
                handler: e => saveToStorage(`glossary_agent_platform_${glossaryAgentPlatformSelect.value}_apikey`, e.target.value)
            },
            {
                element: glossaryAgentModelIdInput,
                event: 'input',
                handler: e => saveToStorage(`glossary_agent_platform_${glossaryAgentPlatformSelect.value}_model_id`, e.target.value)
            },
            {
                element: glossaryAgentToLangSelect,
                event: 'change',
                saveKey: 'glossary_agent_to_lang',
                postHook: () => updateCustomLangUI(glossaryAgentToLangSelect, glossaryAgentCustomLangGroup, glossaryAgentCustomLangInput)
            },
            {element: glossaryAgentCustomLangInput, event: 'input', saveKey: 'glossary_agent_custom_to_lang'},
            // Others
            {element: glossaryFilesInput, event: 'change', handler: handleGlossaryFiles},
            {
                element: viewGlossaryBtn, event: 'click', handler: () => {
                    populateGlossaryModal();
                    glossaryModal.show();
                }
            },
            {element: clearGlossaryBtn, event: 'click', handler: clearGlossary},
            {element: addNewTaskBtn, event: 'click', handler: () => createTaskCard()},
            {element: setBilingualViewBtn, event: 'click', handler: () => setPreviewDisplayMode('bilingual')},
            {element: setTranslatedOnlyViewBtn, event: 'click', handler: () => setPreviewDisplayMode('translatedOnly')},
        ];
        setupEventListeners(eventListenersConfig);

        // Setup radio button groups separately as they are collections
        document.querySelectorAll('#thinkingModeBtnGroup input[name="thinking"]').forEach(radio => radio.addEventListener('change', e => saveToStorage('translator_thinking_mode', e.target.value)));
        glossaryAgentConfigChoiceRadios.forEach(radio => radio.addEventListener('change', e => {
            saveToStorage('glossary_agent_config_choice', e.target.value);
            updateGlossaryCustomConfigUI();
        }));
        glossaryAgentThinkingRadios.forEach(radio => radio.addEventListener('change', e => saveToStorage('glossary_agent_thinking_mode', e.target.value)));

        document.querySelectorAll('.toggle-password').forEach(setupPasswordToggle);

        // Restore tasks
        if (isAdminMode) {
            document.title = "DocuTranslate - Admin Panel";
            try {
                const response = await fetch('/service/task-list');
                if (!response.ok) throw new Error(`Failed to fetch task list: ${response.statusText}`);
                const allTaskIds = await response.json();
                if (allTaskIds && allTaskIds.length > 0) {
                    allTaskIds.reverse().forEach(taskId => createTaskCard(taskId, true));
                }
            } catch (error) {
                console.error("Admin mode: Failed to load task list.", error);
                alert(getText('admin_tasklist_failed'));
            }
            updateTaskPlaceholderVisibility();
        } else {
            const savedTaskIds = JSON.parse(getFromStorage('active_task_ids', '[]'));
            if (savedTaskIds.length > 0) {
                savedTaskIds.forEach(taskId => createTaskCard(taskId, true));
            } else {
                createTaskCard();
            }
        }

        // Add resize listener for preview
        window.addEventListener('resize', () => {
            if (previewOffcanvasEl.classList.contains('show')) {
                const currentMode = originalPreviewContainer.style.display !== 'none' ? 'bilingual' : 'translatedOnly';
                setPreviewDisplayMode(currentMode);
            }
        });
    }

    // --- Theme switcher logic ---
    const getPreferredTheme = () => {
        const storedTheme = localStorage.getItem('theme');
        if (storedTheme) {
            return storedTheme;
        }
        return 'auto';
    };
    const setTheme = theme => {
        if (theme === 'auto') {
            document.documentElement.setAttribute('data-bs-theme', window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
        } else {
            document.documentElement.setAttribute('data-bs-theme', theme);
        }
    };
    const showActiveTheme = (theme) => {
        document.querySelectorAll('[data-bs-theme-value]').forEach(element => {
            element.classList.remove('active');
        });
        const activeButton = document.querySelector(`[data-bs-theme-value="${theme}"]`);
        if (activeButton) {
            activeButton.classList.add('active');
        }
    };
    const preferredTheme = getPreferredTheme();
    setTheme(preferredTheme);
    showActiveTheme(preferredTheme);
    window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
        const storedTheme = localStorage.getItem('theme');
        if (storedTheme === 'auto' || !storedTheme) {
            setTheme('auto');
        }
    });
    document.querySelectorAll('[data-bs-theme-value]').forEach(toggle => {
        toggle.addEventListener('click', () => {
            const theme = toggle.getAttribute('data-bs-theme-value');
            localStorage.setItem('theme', theme);
            setTheme(theme);
            showActiveTheme(theme);
        });
    });

    // --- Start the application ---
    document.addEventListener('DOMContentLoaded', init);
</script>
</body>
</html>
\ No newline at end of file
diff --git a/docutranslate/translator/ai_translator/base.py b/docutranslate/translator/ai_translator/base.py
index 9d757f2..89f71aa 100644
--- a/docutranslate/translator/ai_translator/base.py
+++ b/docutranslate/translator/ai_translator/base.py
@@ -4,28 +4,24 @@ from abc import abstractmethod
 from dataclasses import dataclass, field
 from typing import TypeVar
 
-from docutranslate.agents.agent import ThinkingMode
+from docutranslate.agents.agent import ThinkingMode, AgentConfig
 from docutranslate.agents.glossary_agent import GlossaryAgentConfig, GlossaryAgent
 from docutranslate.ir.document import Document
 from docutranslate.translator.base import Translator, TranslatorConfig
 
 
 @dataclass(kw_only=True)
-class AiTranslatorConfig(TranslatorConfig):
-    base_url: str | None = field(default=None,metadata={"description": "OpenAI兼容地址，当skip_translate为False时为必填项"})
-    api_key: str | None = field(default=None,metadata={"description": "当skip_translate为False时为必填项"})
-    model_id: str | None = field(default=None,metadata={"description": "当skip_translate为False时为必填项"})
+class AiTranslatorConfig(TranslatorConfig, AgentConfig):
+    base_url: str | None = field(default=None,
+                                 metadata={"description": "OpenAI兼容地址，当skip_translate为False时为必填项"})
+    model_id: str | None = field(default=None, metadata={"description": "当skip_translate为False时为必填项"})
     to_lang: str = "简体中文"
     custom_prompt: str | None = None
-    temperature: float = 0.7
-    thinking: ThinkingMode = "default"
-    timeout: int = 2000
     chunk_size: int = 3000
-    concurrent: int = 30
     glossary_dict: dict[str:str] | None = field(default=None)
     glossary_generate_enable: bool = False
     glossary_agent_config: GlossaryAgentConfig | None = None
-    skip_translate: bool = False
+    skip_translate: bool = False  # 当skip_translate为False时base_url、model_id为必填项
 
 
 T = TypeVar('T', bound=Document)
@@ -55,7 +51,7 @@ class AiTranslator(Translator[T]):
                     model_id=config.model_id,
                     temperature=config.temperature,
                     thinking=config.thinking,
-                    max_concurrent=config.concurrent,
+                    concurrent=config.concurrent,
                     timeout=config.timeout,
                     logger=self.logger,
                 )
diff --git a/docutranslate/translator/ai_translator/docx_translator.py b/docutranslate/translator/ai_translator/docx_translator.py
index c48d95c..3eebb88 100644
--- a/docutranslate/translator/ai_translator/docx_translator.py
+++ b/docutranslate/translator/ai_translator/docx_translator.py
@@ -49,7 +49,7 @@ class DocxTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict
diff --git a/docutranslate/translator/ai_translator/epub_translator.py b/docutranslate/translator/ai_translator/epub_translator.py
index 7d85211..ffacf55 100644
--- a/docutranslate/translator/ai_translator/epub_translator.py
+++ b/docutranslate/translator/ai_translator/epub_translator.py
@@ -40,7 +40,7 @@ class EpubTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict
diff --git a/docutranslate/translator/ai_translator/html_translator.py b/docutranslate/translator/ai_translator/html_translator.py
index 9e4b21c..2098020 100644
--- a/docutranslate/translator/ai_translator/html_translator.py
+++ b/docutranslate/translator/ai_translator/html_translator.py
@@ -97,7 +97,7 @@ class HtmlTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict
diff --git a/docutranslate/translator/ai_translator/json_translator.py b/docutranslate/translator/ai_translator/json_translator.py
index 18230d2..014f85e 100644
--- a/docutranslate/translator/ai_translator/json_translator.py
+++ b/docutranslate/translator/ai_translator/json_translator.py
@@ -30,7 +30,7 @@ class JsonTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict
diff --git a/docutranslate/translator/ai_translator/md_translator.py b/docutranslate/translator/ai_translator/md_translator.py
index ac87cb0..20de634 100644
--- a/docutranslate/translator/ai_translator/md_translator.py
+++ b/docutranslate/translator/ai_translator/md_translator.py
@@ -30,7 +30,7 @@ class MDTranslator(AiTranslator):
                                                   model_id=config.model_id,
                                                   temperature=config.temperature,
                                                   thinking=config.thinking,
-                                                  max_concurrent=config.concurrent,
+                                                  concurrent=config.concurrent,
                                                   timeout=config.timeout,
                                                   logger=self.logger,
                                                   glossary_dict=config.glossary_dict)
diff --git a/docutranslate/translator/ai_translator/srt_translator.py b/docutranslate/translator/ai_translator/srt_translator.py
index 7406e5a..dfd0b41 100644
--- a/docutranslate/translator/ai_translator/srt_translator.py
+++ b/docutranslate/translator/ai_translator/srt_translator.py
@@ -36,7 +36,7 @@ class SrtTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict
diff --git a/docutranslate/translator/ai_translator/txt_translator.py b/docutranslate/translator/ai_translator/txt_translator.py
index 78106b8..bcb2ca3 100644
--- a/docutranslate/translator/ai_translator/txt_translator.py
+++ b/docutranslate/translator/ai_translator/txt_translator.py
@@ -54,7 +54,7 @@ class TXTTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict
diff --git a/docutranslate/translator/ai_translator/xlsx_translator.py b/docutranslate/translator/ai_translator/xlsx_translator.py
index 981c95b..38c5c19 100644
--- a/docutranslate/translator/ai_translator/xlsx_translator.py
+++ b/docutranslate/translator/ai_translator/xlsx_translator.py
@@ -38,7 +38,7 @@ class XlsxTranslator(AiTranslator):
                 model_id=config.model_id,
                 temperature=config.temperature,
                 thinking=config.thinking,
-                max_concurrent=config.concurrent,
+                concurrent=config.concurrent,
                 timeout=config.timeout,
                 logger=self.logger,
                 glossary_dict=config.glossary_dict