现阶段基础播放能力已经实现，接下来将尽全力往UI方向再调整一下

lib/pages/home_page.dart

@@ -9,7 +9,6 @@ import '../widgets/magnetic_scroll_physics.dart';
 import 'webdav_setup_page.dart';
 import 'webdav_file_list_page.dart';
 import 'dart:async';
-import 'dart:convert';
 
 // ==================================================
 // 歌曲数据模型
@@ -258,15 +257,7 @@ class _HomePageState extends State<HomePage> {
     try {
       final url = WebDAVService.instance.getFileUrl(song.path);
 
-      // ✅ 硬编码认证头测试
-      final testHeaders = {
-        'Authorization':
-            'Basic ' + base64Encode(utf8.encode('test-user-1:Lxh10020328?')),
-      };
-
-      print('🎵 测试 URL: $url');
-      print('📋 测试认证头: ${testHeaders.keys}');
-
+      // 1️⃣ 先更新 UI（立即响应）
       final audioService = context.read<AudioService>();
       audioService.playSong(Song(
         id: song.path,
@@ -275,12 +266,26 @@ class _HomePageState extends State<HomePage> {
         url: url,
       ));
 
-      // 获取认证头
+      // 2️⃣ 动态获取认证头
       final headers = await WebDAVService.instance.getAuthHeaders();
-      print('📋 认证头数量: ${headers.length}');
-      print('📋 认证头内容: $headers');
 
-      // 播放
+      if (headers.isEmpty) {
+        print('⚠️ 未获取到认证头，请检查 WebDAV 登录状态');
+        if (mounted) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(
+              content: Text('请先登录 WebDAV'),
+              backgroundColor: Colors.orange,
+            ),
+          );
+        }
+        return;
+      }
+
+      print('🎵 [收藏列表] 播放 URL: $url');
+      print('📋 [收藏列表] 认证头已设置: ${headers.keys}');
+
+      // 3️⃣ 播放
       await PlaybackService().play(url, headers: headers);
     } catch (e) {
       if (mounted) {

lib/pages/player_page.dart

@@ -11,17 +11,8 @@ class PlayerPage extends StatefulWidget {
 }
 
 class _PlayerPageState extends State<PlayerPage> {
-  // ✅ 使用 late，但不赋值，在 didChangeDependencies 中初始化
-  late AudioService _audioService;
-
-  @override
-  void didChangeDependencies() {
-    super.didChangeDependencies();
-    // ✅ 只在第一次或 service 变化时赋值
-    _audioService = context.watch<AudioService>();
-  }
-
   String _formatDuration(Duration d) {
+    if (d.inMilliseconds < 0) return '00:00';
     final minutes = d.inMinutes;
     final seconds = d.inSeconds % 60;
     return '${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
@@ -29,7 +20,6 @@ class _PlayerPageState extends State<PlayerPage> {
 
   @override
   Widget build(BuildContext context) {
-    // ✅ 使用 watch 实时获取状态
     final service = context.watch<AudioService>();
     final song = service.currentSong;
 
@@ -45,9 +35,9 @@ class _PlayerPageState extends State<PlayerPage> {
       );
     }
 
+    final isPlaying = service.isPlaying;
     final position = service.position;
     final duration = service.duration;
-    final isPlaying = service.isPlaying;
     final progress = duration.inMilliseconds > 0
         ? position.inMilliseconds / duration.inMilliseconds
         : 0.0;
@@ -61,6 +51,15 @@ class _PlayerPageState extends State<PlayerPage> {
           icon: const Icon(Icons.arrow_back_ios_new, color: Colors.white),
           onPressed: () => Navigator.pop(context),
         ),
+        title: const Text(
+          '正在播放',
+          style: TextStyle(
+            color: Colors.white,
+            fontSize: 16,
+            fontWeight: FontWeight.w400,
+          ),
+        ),
+        centerTitle: true,
         actions: [
           IconButton(
             icon: const Icon(Icons.more_vert, color: Colors.white54),
@@ -73,9 +72,10 @@ class _PlayerPageState extends State<PlayerPage> {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
+            // ---- 封面占位 ----
             Container(
-              width: 280,
-              height: 280,
+              width: 240,
+              height: 240,
               decoration: BoxDecoration(
                 shape: BoxShape.circle,
                 color: const Color(0xFF2A3332),
@@ -89,35 +89,43 @@ class _PlayerPageState extends State<PlayerPage> {
               ),
               child: const Icon(
                 Icons.music_note,
-                size: 80,
+                size: 64,
                 color: Colors.white24,
               ),
             ),
             const SizedBox(height: 48),
+
+            // ---- 歌曲信息 ----
             Column(
               crossAxisAlignment: CrossAxisAlignment.center,
               children: [
                 Text(
                   song.title,
                   style: const TextStyle(
-                    fontSize: 22,
+                    fontSize: 20,
                     fontWeight: FontWeight.w600,
                     color: Colors.white,
                   ),
                   textAlign: TextAlign.center,
+                  maxLines: 2,
+                  overflow: TextOverflow.ellipsis,
                 ),
                 const SizedBox(height: 8),
                 Text(
                   song.artist,
                   style: TextStyle(
-                    fontSize: 16,
+                    fontSize: 15,
                     color: Colors.grey[400],
                   ),
                   textAlign: TextAlign.center,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
                 ),
               ],
             ),
             const SizedBox(height: 40),
+
+            // ---- 进度条 ----
             Column(
               children: [
                 Slider(
@@ -130,6 +138,8 @@ class _PlayerPageState extends State<PlayerPage> {
                   },
                   activeColor: const Color(0xFFB8D4D0),
                   inactiveColor: Colors.grey[800],
+                  min: 0.0,
+                  max: 1.0,
                 ),
                 Row(
                   mainAxisAlignment: MainAxisAlignment.spaceBetween,
@@ -153,19 +163,21 @@ class _PlayerPageState extends State<PlayerPage> {
               ],
             ),
             const SizedBox(height: 32),
+
+            // ---- 播放控制 ----
             Row(
               mainAxisAlignment: MainAxisAlignment.center,
               children: [
                 IconButton(
                   onPressed: () {},
-                  icon: const Icon(Icons.skip_previous, size: 32),
+                  icon: const Icon(Icons.skip_previous, size: 28),
                   color: Colors.white60,
-                  padding: const EdgeInsets.all(16),
+                  padding: const EdgeInsets.all(12),
                 ),
-                const SizedBox(width: 24),
+                const SizedBox(width: 20),
                 Container(
-                  width: 64,
-                  height: 64,
+                  width: 56,
+                  height: 56,
                   decoration: BoxDecoration(
                     color: const Color(0xFFB8D4D0),
                     shape: BoxShape.circle,
@@ -174,7 +186,7 @@ class _PlayerPageState extends State<PlayerPage> {
                     icon: Icon(
                       isPlaying ? Icons.pause : Icons.play_arrow,
                       color: Colors.black87,
-                      size: 32,
+                      size: 28,
                     ),
                     padding: EdgeInsets.zero,
                     onPressed: () {
@@ -182,26 +194,16 @@ class _PlayerPageState extends State<PlayerPage> {
                     },
                   ),
                 ),
-                const SizedBox(width: 24),
+                const SizedBox(width: 20),
                 IconButton(
                   onPressed: () {},
-                  icon: const Icon(Icons.skip_next, size: 32),
+                  icon: const Icon(Icons.skip_next, size: 28),
                   color: Colors.white60,
-                  padding: const EdgeInsets.all(16),
-                ),
-              ],
-            ),
-            const SizedBox(height: 32),
-            Row(
-              mainAxisAlignment: MainAxisAlignment.center,
-              children: [
-                IconButton(
-                  onPressed: () {},
-                  icon: const Icon(Icons.volume_up_outlined),
-                  color: Colors.white38,
+                  padding: const EdgeInsets.all(12),
                 ),
               ],
             ),
+            const SizedBox(height: 16),
           ],
         ),
       ),

lib/pages/webdav_file_list_page.dart

@@ -72,14 +72,24 @@ class _WebDAVFileListPageState extends State<WebDAVFileListPage> {
     try {
       final url = WebDAVService.instance.getFileUrl(file.path);
 
-      // ✅ 硬编码认证头（与 home_page 保持一致）
-      final testHeaders = {
-        'Authorization':
-            'Basic ' + base64Encode(utf8.encode('test-user-1:Lxh10020328?')),
-      };
+      // ✅ 动态获取认证头（从 SharedPreferences 读取）
+      final headers = await WebDAVService.instance.getAuthHeaders();
+
+      if (headers.isEmpty) {
+        print('⚠️ 未获取到认证头，请检查 WebDAV 登录状态');
+        if (mounted) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(
+              content: Text('请先登录 WebDAV'),
+              backgroundColor: Colors.orange,
+            ),
+          );
+        }
+        return;
+      }
 
       print('🎵 [文件列表] 播放 URL: $url');
-      print('📋 [文件列表] 认证头已设置');
+      print('📋 [文件列表] 认证头已设置: ${headers.keys}');
 
       final song = Song(
         id: file.path,
@@ -89,7 +99,7 @@ class _WebDAVFileListPageState extends State<WebDAVFileListPage> {
       );
       context.read<AudioService>().playSong(song);
 
-      await PlaybackService().play(url, headers: testHeaders);
+      await PlaybackService().play(url, headers: headers);
     } catch (e) {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(