新增毛玻璃主题

lib/pages/epub_reader/control_panel.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'reader_style_sheet.dart';
+import '../../widgets/app_overlay.dart';
 
 class ControlPanel extends StatefulWidget {
   final bool showControls;
@@ -217,7 +218,7 @@ class _ControlPanelState extends State<ControlPanel> {
 
   void _openStyleSheet() {
     widget.onToggleStyleDrawer();
-    showModalBottomSheet(
+    appModalBottomSheet(
       context: context,
       isScrollControlled: true,
       backgroundColor: Colors.transparent,

lib/pages/epub_reader/epub_detail_page.dart

@@ -17,6 +17,7 @@ import 'epub_edit_page.dart';
 import 'epub_highlights_page.dart';
 import 'highlight_detail_sheet.dart';
 import 'reader_screen.dart';
+import '../../widgets/app_overlay.dart';
 
 /// EPUB 书籍详情页
 class EpubDetailPage extends StatefulWidget {
@@ -730,7 +731,7 @@ class _EpubDetailPageState extends State<EpubDetailPage> {
 
   /// 删除摘抄（同步删除蓝色高亮）
   Future<void> _deleteExcerpt(BookExcerpt excerpt, ColorScheme colors) async {
-    final confirmed = showDialog<bool>(
+    final confirmed = appDialog<bool>(
       context: context,
       builder: (ctx) => AlertDialog(
         title: const Text('删除摘抄', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
@@ -774,7 +775,7 @@ class _EpubDetailPageState extends State<EpubDetailPage> {
   }
 
   Future<void> _deleteHighlight(int id, ColorScheme colors) async {
-    final confirmed = showDialog<bool>(
+    final confirmed = appDialog<bool>(
       context: context,
       builder: (ctx) => AlertDialog(
         title: const Text('删除句读', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
@@ -873,7 +874,7 @@ class _EpubDetailPageState extends State<EpubDetailPage> {
   }
 
   void _showLinkedBookActions(ColorScheme colors, String title) {
-    showModalBottomSheet(
+    appModalBottomSheet(
       context: context,
       backgroundColor: colors.surface,
       shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(16))),
@@ -914,7 +915,7 @@ class _EpubDetailPageState extends State<EpubDetailPage> {
             title: Text('取消关联', style: TextStyle(fontSize: 13, color: colors.error)),
             onTap: () {
               Navigator.pop(ctx);
-              showDialog(
+              appDialog(
                 context: context,
                 builder: (confirmCtx) => AlertDialog(
                   title: const Text('取消关联', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),

lib/pages/epub_reader/epub_highlights_page.dart

@@ -6,6 +6,7 @@ import '../../utils/toast_util.dart';
 import '../../utils/user_prefs.dart';
 import 'highlight_detail_sheet.dart';
 import 'reader_screen.dart';
+import '../../widgets/app_overlay.dart';
 
 /// EPUB 句读（高亮）管理页面 —— 支持瀑布流/列表模式切换
 class EpubHighlightsPage extends StatefulWidget {
@@ -317,7 +318,7 @@ class _EpubHighlightsPageState extends State<EpubHighlightsPage> {
   }
 
   void _showDeleteConfirm(int id, ColorScheme colors) {
-    showDialog(
+    appDialog(
       context: context,
       builder: (ctx) => AlertDialog(
         backgroundColor: colors.surface,

lib/pages/epub_reader/epub_library_page.dart

@@ -8,6 +8,7 @@ import '../../utils/toast_util.dart';
 import '../../widgets/fade_in_local_image.dart';
 import '../../widgets/shimmer_skeleton.dart';
 import 'epub_detail_page.dart';
+import '../../widgets/app_overlay.dart';
 
 /// EPUB 书架页面
 class EpubLibraryPage extends StatefulWidget {
@@ -88,7 +89,7 @@ class _EpubLibraryPageState extends State<EpubLibraryPage> {
     }
 
     if (!mounted) return;
-    showDialog(
+    appDialog(
       context: context,
       barrierDismissible: false,
       builder: (_) => const Center(child: CircularProgressIndicator()),
@@ -107,7 +108,7 @@ class _EpubLibraryPageState extends State<EpubLibraryPage> {
 
   Future<void> _deleteBook(Map<String, dynamic> book) async {
     final colors = Theme.of(context).colorScheme;
-    final confirm = await showDialog<bool>(
+    final confirm = await appDialog<bool>(
       context: context,
       builder: (ctx) => AlertDialog(
         backgroundColor: colors.surface,
@@ -166,7 +167,7 @@ class _EpubLibraryPageState extends State<EpubLibraryPage> {
       (2, '按阅读进度排序', Icons.auto_stories_outlined),
       (3, '按书名排序', Icons.sort_by_alpha),
     ];
-    showModalBottomSheet(
+    appModalBottomSheet(
       context: context,
       backgroundColor: colors.surface,
       shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(16))),

lib/pages/epub_reader/highlight_detail_sheet.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import '../../utils/toast_util.dart';
 import 'highlight_share_page.dart';
+import '../../widgets/app_overlay.dart';
 
 /// 句读详情弹窗 —— 类似分享卡片的样式
 /// 从 epub_detail_page 和 epub_highlights_page 共用
@@ -19,7 +20,7 @@ void showHighlightDetailSheet(
   final createdAt = highlight['created_at'] as String? ?? '';
   final bookTitle = book['title'] as String? ?? '';
 
-  showModalBottomSheet(
+  appModalBottomSheet(
     context: context,
     backgroundColor: Colors.transparent,
     isScrollControlled: true,
@@ -246,7 +247,7 @@ void showExcerptDetailSheet(
 }) {
   final colors = Theme.of(context).colorScheme;
 
-  showModalBottomSheet(
+  appModalBottomSheet(
     context: context,
     backgroundColor: Colors.transparent,
     isScrollControlled: true,

lib/pages/epub_reader/mixins/link_handling_mixin.dart

@@ -45,7 +45,7 @@ mixin _LinkHandlingMixin on State<ReaderScreen> {
         } else if (linkHandling == ReaderLinkHandling.ask) {
           if (mounted && context.mounted) {
             final shouldOpen =
-                await showDialog<bool>(
+                await appDialog<bool>(
                   context: context,
                   builder: (context) => AlertDialog(
                     title: const Text('打开外部链接'),

lib/pages/epub_reader/reader_screen.dart

@@ -23,6 +23,7 @@ import 'footnote_popup.dart';
 import 'search_sheet.dart';
 import 'epub_selection_toolbar.dart';
 import 'selection_handles.dart';
+import '../../widgets/app_overlay.dart';
 
 part 'mixins/spine_navigation_mixin.dart';
 part 'mixins/page_navigation_mixin.dart';
@@ -439,7 +440,7 @@ class _ReaderScreenState extends State<ReaderScreen>
   }
 
   void _openSearch() {
-    showModalBottomSheet(
+    appModalBottomSheet(
       context: context,
       isScrollControlled: true,
       backgroundColor: Colors.transparent,

lib/pages/epub_reader/reader_style_sheet.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import '../../services/epub/epub_theme.dart';
 import 'widgets/integer_stepper.dart';
 import 'widgets/reader_scale_slider.dart';
+import '../../widgets/app_overlay.dart';
 
 /// Simplified reader style configuration bottom sheet.
 ///
@@ -382,7 +383,7 @@ class _ReaderStyleSheetState extends State<ReaderStyleSheet> {
     Color bgColor = Color(_customBgColor);
     Color textColor = Color(_customTextColor);
 
-    showDialog(
+    appDialog(
       context: context,
       builder: (ctx) {
         return StatefulBuilder(