基础功能

lib/utils/app_theme.dart

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+import 'package:flutter/material.dart';
+
+class AppTheme {
+  // 主色调
+  static const Color primaryColor = Color(0xFF6200EE);
+  static const Color secondaryColor = Color(0xFF03DAC6);
+  
+  // 状态颜色
+  static const Color watchedColor = Color(0xFF4CAF50);  // 已看 - 绿色
+  static const Color wantToWatchColor = Color(0xFFFF9800);  // 想看 - 橙色
+  static const Color watchingColor = Color(0xFF2196F3);  // 在看 - 蓝色
+  
+  static const Color readColor = Color(0xFF4CAF50);  // 读完 - 绿色
+  static const Color wantToReadColor = Color(0xFFFF9800);  // 准备读 - 橙色
+  static const Color readingColor = Color(0xFF2196F3);  // 在读 - 蓝色
+
+  // 亮色主题
+  static final ThemeData lightTheme = ThemeData(
+    useMaterial3: true,
+    brightness: Brightness.light,
+    colorScheme: ColorScheme.fromSeed(
+      seedColor: primaryColor,
+      brightness: Brightness.light,
+    ),
+    appBarTheme: const AppBarTheme(
+      centerTitle: false,
+      elevation: 0,
+    ),
+    cardTheme: CardThemeData(
+      elevation: 2,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12),
+      ),
+    ),
+    bottomNavigationBarTheme: const BottomNavigationBarThemeData(
+      elevation: 8,
+      selectedItemColor: primaryColor,
+      unselectedItemColor: Colors.grey,
+    ),
+  );
+
+  // 暗色主题
+  static final ThemeData darkTheme = ThemeData(
+    useMaterial3: true,
+    brightness: Brightness.dark,
+    colorScheme: ColorScheme.fromSeed(
+      seedColor: primaryColor,
+      brightness: Brightness.dark,
+    ),
+    appBarTheme: const AppBarTheme(
+      centerTitle: false,
+      elevation: 0,
+    ),
+    cardTheme: CardThemeData(
+      elevation: 2,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12),
+      ),
+    ),
+    bottomNavigationBarTheme: const BottomNavigationBarThemeData(
+      elevation: 8,
+      selectedItemColor: secondaryColor,
+      unselectedItemColor: Colors.grey,
+    ),
+  );
+}