style(ui): 统一页面字号间距与状态样式

lib/pages/player/player_view.dart

@@ -18,6 +18,7 @@ import '../../core/formatting/localized_content.dart';
 import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
+import '../../core/widgets/app_bottom_nav.dart';
 import '../../core/widgets/auth_gate.dart';
 import '../../core/widgets/download_action.dart';
 import '../../l10n/app_localizations.dart';
@@ -734,14 +735,14 @@ class _PlaybackOverlay extends StatelessWidget {
     children: [
       _RailAction(
         key: const Key('rail-like'),
-        icon: Icons.favorite_border,
+        icon: liked ? Icons.favorite : Icons.favorite_border,
         label: l10n.like,
         selected: liked,
         onTap: onLike,
       ),
       _RailAction(
         key: const Key('rail-save'),
-        icon: Icons.bookmark_border,
+        icon: saved ? Icons.bookmark : Icons.bookmark_border,
         label: l10n.save,
         selected: saved,
         onTap: onSave,
@@ -787,30 +788,31 @@ class _PlaybackOverlay extends StatelessWidget {
     ],
   );
 
-  Widget _fallbackNav() => Container(
-    height: 62,
-    color: const Color(0xF20C0C0F),
-    child: Row(
-      mainAxisAlignment: MainAxisAlignment.spaceAround,
-      children: [
-        _BottomAction(
-          icon: Icons.play_circle_outline_rounded,
-          label: l10n.homeTab,
-          selected: true,
-          onTap: () {},
-        ),
-        _BottomAction(
-          icon: Icons.explore_outlined,
-          label: l10n.discoverTab,
-          onTap: onDiscover,
-        ),
-        _BottomAction(
-          icon: Icons.video_library_outlined,
-          label: l10n.myTab,
-          onTap: onMy,
-        ),
-      ],
-    ),
+  Widget _fallbackNav() => AppBottomNav(
+    items: [
+      AppBottomNavItem(
+        tabKey: const Key('player-nav-home'),
+        icon: Icons.play_circle_outline_rounded,
+        selectedIcon: Icons.play_circle_fill_rounded,
+        label: l10n.homeTab,
+        selected: true,
+        onTap: () {},
+      ),
+      AppBottomNavItem(
+        tabKey: const Key('player-nav-discover'),
+        icon: Icons.explore_outlined,
+        selectedIcon: Icons.explore_rounded,
+        label: l10n.discoverTab,
+        onTap: onDiscover,
+      ),
+      AppBottomNavItem(
+        tabKey: const Key('player-nav-my'),
+        icon: Icons.video_library_outlined,
+        selectedIcon: Icons.video_library_rounded,
+        label: l10n.myTab,
+        onTap: onMy,
+      ),
+    ],
   );
 }
 
@@ -844,43 +846,3 @@ class _RailAction extends StatelessWidget {
     icon: Icon(icon, size: _railIconSize, weight: _railIconWeight, fill: 0),
   );
 }
-
-class _BottomAction extends StatelessWidget {
-  const _BottomAction({
-    required this.icon,
-    required this.label,
-    required this.onTap,
-    this.selected = false,
-  });
-
-  final IconData icon;
-  final String label;
-  final VoidCallback onTap;
-  final bool selected;
-
-  @override
-  Widget build(BuildContext context) => InkWell(
-    onTap: onTap,
-    borderRadius: BorderRadius.circular(12),
-    child: Padding(
-      padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 6),
-      child: Column(
-        mainAxisSize: MainAxisSize.min,
-        children: [
-          Icon(
-            icon,
-            color: selected ? AppColors.blueSoft : const Color(0xFFF3EEEA),
-          ),
-          const SizedBox(height: 2),
-          Text(
-            label,
-            style: TextStyle(
-              fontSize: 11,
-              color: selected ? AppColors.blueSoft : const Color(0xFFF3EEEA),
-            ),
-          ),
-        ],
-      ),
-    ),
-  );
-}

lib/pages/player/widgets/comment_tile.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 import '../../../core/data/models/comment.dart';
 import '../../../core/data/services/comment_controller.dart';
 import '../../../core/theme/app_colors.dart';
+import '../../../core/theme/app_dimens.dart';
 import '../../../l10n/app_localizations.dart';
 
 const String _deleteAction = 'delete';
@@ -43,7 +44,9 @@ class CommentTile extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final l10n = AppLocalizations.of(context)!;
-    final name = comment.nickname.isEmpty ? l10n.anonymousUser : comment.nickname;
+    final name = comment.nickname.isEmpty
+        ? l10n.anonymousUser
+        : comment.nickname;
     return Padding(
       key: Key('comment-item-${comment.id}'),
       padding: const EdgeInsets.symmetric(vertical: 8),
@@ -111,7 +114,7 @@ class CommentTile extends StatelessWidget {
                       key: Key('comment-pending-${comment.id}'),
                       style: const TextStyle(
                         color: AppColors.blueSoft,
-                        fontSize: 11,
+                        fontSize: AppDimens.caption,
                       ),
                     ),
                   ),