style(theme): 客户端切换深色视觉风格

lib/core/theme/app_colors.dart

@@ -2,107 +2,143 @@
 
 import 'package:flutter/material.dart';
 
-/// K28-S 浅色暖橙主题色板。
+/// 深色视觉色板。
 ///
 /// 保留既有语义名，避免页面大范围改名；实际颜色统一由本文件控制。
 abstract final class AppColors {
-  /// 主操作、选中态、播放进度。
-  static const blue = Color(0xFFFF7A1A);
+  /// 透明与媒体黑底。
+  static const transparent = Colors.transparent;
+  static const mediaBlack = Color(0xFF000000);
+
+  /// 阴影与遮罩层级。
+  static const shadowSubtle = Color(0x14000000);
+  static const shadowSoft = Color(0x33000000);
+  static const shadow = Color(0x8A000000);
+  static const shadowStrong = Color(0xE6000000);
+  static const scrim = Color(0xD1000000);
+  static const controlScrim = Color(0x80000000);
+  static const controlSoftScrim = Color(0x42000000);
+  static const scrubPreviewScrim = Color(0xDE000000);
+  static const overlaySoft = Color(0x66000000);
+  static const overlayBar = Color(0x4D000000);
+  static const overlayMedium = Color(0x99000000);
+  static const headerScrim = Color(0x59000000);
+
+  /// 主操作、选中态、播放进度（品牌橙）。
+  static const blue = Color(0xFFFF6B2C);
   static const primary = blue;
 
   /// 主操作按下态。
-  static const bluePressed = Color(0xFFFF6A00);
+  static const bluePressed = Color(0xFFE55A1F);
 
-  /// 粉色辅助强调色。
-  static const blueSoft = Color(0xFFFF6A8A);
+  /// 链接与次要高亮（禁止大面积铺色）。
+  static const blueSoft = Color(0xFF22D3EE);
   static const secondary = blueSoft;
   static const lavender = blueSoft;
 
   /// 金币与奖励。
   static const gold = Color(0xFFF3B34C);
+  static const goldDeep = Color(0xFFD9A23A);
+  static const bronze = Color(0xFFCD7F32);
+  static const bronzeDeep = Color(0xFFA9713A);
 
   /// 成功状态。
   static const success = Color(0xFF2FA873);
 
-  /// 收藏和喜欢使用粉色强调。
-  static const favorite = secondary;
+  /// 错误与危险操作。
+  static const error = Color(0xFFFF6B6B);
+
+  /// 收藏与喜欢（非主色铺色，独立强调）。
+  static const favorite = Color(0xFFFF6A8A);
 
   /// 金币底色上的文字。
-  static const onGold = Color(0xFF5A3511);
+  static const onGold = Color(0xFF3D2408);
 
   /// 主色上的文字与图标。
   static const onPrimary = Color(0xFFFFFFFF);
 
   /// 页面背景。
-  static const ink = Color(0xFFFFF8F0);
+  static const ink = Color(0xFF0B1020);
 
   /// 原生开屏与冷启动过渡底色。
-  static const splashInk = Color(0xFF1F1B16);
+  static const splashInk = ink;
 
-  /// 页面顶部暖色渐变起点。
-  static const surfaceTop = Color(0xFFFFE9D6);
+  /// 顶部与页面底同色，靠容器层次区分。
+  static const surfaceTop = ink;
 
   /// 底部导航底色。
-  static const bar = Color(0xFFFFFDFB);
+  static const bar = ink;
 
-  /// 卡片轻阴影。
-  static const cardShadow = Color(0x14FF8A3D);
+  /// 卡片阴影（深色几乎不用阴影）。
+  static const cardShadow = Color(0x00000000);
 
-  /// 卡片与弹层。
-  static const card = Color(0xFFFFFFFF);
+  /// 卡片与列表容器。
+  static const card = Color(0xFF151B2E);
 
   /// 次要卡片表面。
-  static const cardAlt = Color(0xFFFFF4E9);
+  static const cardAlt = card;
 
-  /// 浮层、输入框和嵌套区域。
-  static const raised = Color(0xFFFFF1E5);
-  static const quick = Color(0xFFFFF0E1);
-  static const input = Color(0xFFFFF4EA);
+  /// 浮层、弹窗、输入与嵌套区域。
+  static const raised = Color(0xFF1C2436);
+  static const quick = raised;
+  static const input = raised;
 
   /// 评论输入框底色。
-  static const commentInput = Color(0xFFF5EFE8);
-  static const goldCard = Color(0xFFFFF4DF);
+  static const commentInput = raised;
+  static const goldCard = Color(0xFF2A2418);
 
-  /// 正文颜色。
-  static const cream = Color(0xFF1F1B16);
+  /// 正文颜色（与主文字同级）。
+  static const cream = Color(0xEBFFFFFF);
 
-  /// 主文字。
-  static const onSurface = Color(0xFF1F1B16);
+  /// 主文字 rgba(255,255,255,0.92)。
+  static const onSurface = Color(0xEBFFFFFF);
 
-  /// 次要文字。
-  static const muted = Color(0xFF8C837B);
+  /// 次要文字 rgba(255,255,255,0.64)。
+  static const muted = Color(0xA3FFFFFF);
 
-  /// 弱提示与时间。
-  static const subtle = Color(0xFFB3AAA1);
+  /// 弱提示与禁用 rgba(255,255,255,0.38)。
+  static const subtle = Color(0x61FFFFFF);
 
   /// 橙色强调文案。
   static const accent = blue;
 
-  /// 卡片描边。
-  static const border = Color(0xFFF0E4D6);
+  /// 分割线 rgba(255,255,255,0.06)。
+  static const border = Color(0x0FFFFFFF);
 
   /// 玻璃面板描边。
-  static const glassBorder = Color(0x66FFFFFF);
+  static const glassBorder = Color(0x33FFFFFF);
+  static const glassSurfaceStart = Color(0xEB1C2436);
+  static const glassSurfaceEnd = Color(0xD1151B2E);
 
-  /// 粉色角标。
-  static const badgePink = Color(0xFFFFE3EC);
-  static const badgePinkText = Color(0xFFFF6A8A);
+  /// 角标底与文字。
+  static const badgePink = Color(0x33FF6A8A);
+  static const badgePinkText = favorite;
 
   /// 封面锁定数量与视频遮罩。
-  static const overlayDark = Color(0x33000000);
+  static const overlayDark = Color(0x66000000);
 
   /// 封面集数胶囊。
-  static const badgeBeige = Color(0xFFFFF0DF);
+  static const badgeBeige = raised;
 
   /// 导航未选中。
   static const navUnselected = muted;
 
   /// 播放器次要文字。
-  static const playerMuted = Color(0xFFBBBBBB);
+  static const playerMuted = Color(0xA3FFFFFF);
 
   /// 播放器控件胶囊与圆形底色。
   static const playerOverlayPill = Color(0xB3000000);
 
+  /// 进度条未激活轨道。
+  static const inactiveTrack = Color(0x24FFFFFF);
+
+  /// 横幅/封面底部渐变。
+  static const bannerScrimMid = Color(0x8A0B1020);
+  static const bannerScrimEnd = Color(0xE6000000);
+
+  /// 票券虚线等主色描边。
+  static const primaryBorder = Color(0x66FF6B2C);
+
   static const outlineDark = border;
   static const outlineVariantDark = border;
   static const outlineLight = muted;

lib/core/theme/app_dimens.dart

@@ -9,18 +9,20 @@ abstract final class AppDimens {
   static const double spaceXl = 24;
 
   static const double pageHorizontal = 16;
-  static const double cardRadius = 16;
-  static const double authCardRadius = 20;
+  static const double cardRadius = 12;
+  static const double authCardRadius = 12;
   static const double cardPadding = 16;
-  static const double innerRadius = 12;
+  static const double innerRadius = 10;
   static const double innerPadding = 12;
   static const double pillRadius = 999;
-  static const double glassSmallRadius = 16;
-  static const double glassRadius = 20;
-  static const double glassCardRadius = 20;
-  static const double buttonRadius = 999;
-  static const double coverRadius = 16;
-  static const double sheetRadius = 20;
+  static const double glassSmallRadius = 12;
+  static const double glassRadius = 12;
+  static const double glassCardRadius = 12;
+  static const double buttonRadius = 10;
+  static const double inputRadius = 10;
+  static const double chipRadius = 6;
+  static const double coverRadius = 12;
+  static const double sheetRadius = 12;
 
   static const double caption = 12;
   static const double emptyStateSubtitle = 12.5;
@@ -61,13 +63,13 @@ abstract final class AppDimens {
 
   static const double watchPlaceholderHeight = 114;
   static const double heroBannerHeight = 240;
-  static const double heroBannerRadius = 20;
+  static const double heroBannerRadius = 12;
   static const double heroTitle = 28;
   static const double heroSubtitle = 14;
 
   static const double cardMeta = 12;
   static const double cardViews = 11;
   static const double cardTitle = 15;
-  static const double cardShadowBlur = 18;
-  static const double cardShadowY = 6;
+  static const double cardShadowBlur = 0;
+  static const double cardShadowY = 0;
 }

lib/core/theme/app_theme.dart

@@ -6,9 +6,9 @@ import 'package:flutter/services.dart';
 import 'app_colors.dart';
 import 'app_dimens.dart';
 
-/// K28-S 浅色暖橙主题。
+/// 深色视觉主题（默认且唯一）。
 abstract final class AppTheme {
-  /// 页面顶部暖色到米白背景的渐变。
+  /// 页面背景：深色扁平，靠容器层次区分。
   static const LinearGradient pageGradient = LinearGradient(
     begin: Alignment.topCenter,
     end: Alignment.bottomCenter,
@@ -16,36 +16,50 @@ abstract final class AppTheme {
     stops: [0, 0.24],
   );
 
-  /// 卡片轻阴影。
+  /// 卡片阴影关闭，改用底色与分割线。
   static const BoxShadow cardShadow = BoxShadow(
     color: AppColors.cardShadow,
     blurRadius: AppDimens.cardShadowBlur,
     offset: Offset(0, AppDimens.cardShadowY),
   );
 
-  /// 全局浅色暖橙主题。
-  static ThemeData light() {
-    const scheme = ColorScheme.light(
+  static final BorderRadius _buttonRadius = BorderRadius.circular(
+    AppDimens.buttonRadius,
+  );
+  static final BorderRadius _cardRadius = BorderRadius.circular(
+    AppDimens.cardRadius,
+  );
+  static final BorderRadius _inputRadius = BorderRadius.circular(
+    AppDimens.inputRadius,
+  );
+
+  /// 全局深色主题。
+  static ThemeData dark() {
+    const scheme = ColorScheme.dark(
       primary: AppColors.blue,
       onPrimary: AppColors.onPrimary,
       secondary: AppColors.secondary,
-      onSecondary: AppColors.onPrimary,
-      primaryContainer: AppColors.surfaceTop,
+      onSecondary: AppColors.ink,
+      primaryContainer: AppColors.raised,
       onPrimaryContainer: AppColors.onSurface,
       secondaryContainer: AppColors.badgePink,
       onSecondaryContainer: AppColors.badgePinkText,
       surface: AppColors.ink,
       onSurface: AppColors.onSurface,
+      surfaceContainerHighest: AppColors.raised,
       outline: AppColors.border,
       outlineVariant: AppColors.border,
-      surfaceTint: AppColors.blue,
+      surfaceTint: AppColors.transparent,
       inversePrimary: AppColors.bluePressed,
+      error: AppColors.error,
+      onError: AppColors.onPrimary,
     );
     final base = ThemeData(
       useMaterial3: true,
-      brightness: Brightness.light,
+      brightness: Brightness.dark,
       colorScheme: scheme,
       scaffoldBackgroundColor: AppColors.ink,
+      canvasColor: AppColors.ink,
       fontFamily: 'PlusJakartaSans',
       progressIndicatorTheme: const ProgressIndicatorThemeData(
         color: AppColors.blue,
@@ -61,7 +75,23 @@ abstract final class AppTheme {
         unselectedLabelColor: AppColors.muted,
       ),
       textButtonTheme: TextButtonThemeData(
-        style: TextButton.styleFrom(foregroundColor: AppColors.blue),
+        style: TextButton.styleFrom(
+          foregroundColor: AppColors.secondary,
+          shape: RoundedRectangleBorder(borderRadius: _buttonRadius),
+        ),
+      ),
+      elevatedButtonTheme: ElevatedButtonThemeData(
+        style: ButtonStyle(
+          backgroundColor: WidgetStateProperty.resolveWith(_buttonColor),
+          foregroundColor: const WidgetStatePropertyAll(AppColors.onPrimary),
+          elevation: const WidgetStatePropertyAll(0),
+          minimumSize: const WidgetStatePropertyAll(
+            Size(0, AppDimens.buttonHeight),
+          ),
+          shape: WidgetStatePropertyAll(
+            RoundedRectangleBorder(borderRadius: _buttonRadius),
+          ),
+        ),
       ),
       filledButtonTheme: FilledButtonThemeData(
         style: ButtonStyle(
@@ -70,7 +100,9 @@ abstract final class AppTheme {
           minimumSize: const WidgetStatePropertyAll(
             Size(0, AppDimens.buttonHeight),
           ),
-          shape: const WidgetStatePropertyAll(StadiumBorder()),
+          shape: WidgetStatePropertyAll(
+            RoundedRectangleBorder(borderRadius: _buttonRadius),
+          ),
         ),
       ),
       outlinedButtonTheme: OutlinedButtonThemeData(
@@ -82,14 +114,46 @@ abstract final class AppTheme {
           side: const WidgetStatePropertyAll(
             BorderSide(color: AppColors.border),
           ),
-          shape: const WidgetStatePropertyAll(StadiumBorder()),
+          shape: WidgetStatePropertyAll(
+            RoundedRectangleBorder(borderRadius: _buttonRadius),
+          ),
+        ),
+      ),
+      inputDecorationTheme: InputDecorationTheme(
+        filled: true,
+        fillColor: AppColors.input,
+        hintStyle: const TextStyle(color: AppColors.subtle),
+        labelStyle: const TextStyle(color: AppColors.muted),
+        border: OutlineInputBorder(
+          borderRadius: _inputRadius,
+          borderSide: const BorderSide(color: AppColors.border),
+        ),
+        enabledBorder: OutlineInputBorder(
+          borderRadius: _inputRadius,
+          borderSide: const BorderSide(color: AppColors.border),
+        ),
+        focusedBorder: OutlineInputBorder(
+          borderRadius: _inputRadius,
+          borderSide: const BorderSide(color: AppColors.blue),
+        ),
+      ),
+      chipTheme: ChipThemeData(
+        backgroundColor: AppColors.raised,
+        selectedColor: AppColors.blue.withValues(alpha: 0.22),
+        labelStyle: const TextStyle(color: AppColors.onSurface),
+        secondaryLabelStyle: const TextStyle(color: AppColors.muted),
+        side: const BorderSide(color: AppColors.border),
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(AppDimens.chipRadius),
         ),
       ),
       appBarTheme: const AppBarTheme(
-        backgroundColor: AppColors.ink,
+        backgroundColor: AppColors.card,
         foregroundColor: AppColors.onSurface,
         elevation: 0,
-        systemOverlayStyle: SystemUiOverlayStyle.dark,
+        scrolledUnderElevation: 0,
+        surfaceTintColor: AppColors.transparent,
+        systemOverlayStyle: SystemUiOverlayStyle.light,
         titleTextStyle: TextStyle(
           color: AppColors.onSurface,
           fontFamily: 'Outfit',
@@ -98,19 +162,47 @@ abstract final class AppTheme {
         ),
       ),
       iconTheme: const IconThemeData(color: AppColors.onSurface),
-      dividerTheme: const DividerThemeData(color: AppColors.border),
-      cardTheme: const CardThemeData(
+      dividerTheme: const DividerThemeData(
+        color: AppColors.border,
+        thickness: 1,
+        space: 1,
+      ),
+      cardTheme: CardThemeData(
         color: AppColors.card,
         elevation: 0,
+        shadowColor: AppColors.transparent,
+        surfaceTintColor: AppColors.transparent,
         shape: RoundedRectangleBorder(
-          borderRadius: BorderRadius.all(Radius.circular(AppDimens.cardRadius)),
-          side: BorderSide(color: AppColors.border),
+          borderRadius: _cardRadius,
+          side: const BorderSide(color: AppColors.border),
         ),
       ),
+      dialogTheme: DialogThemeData(
+        backgroundColor: AppColors.raised,
+        surfaceTintColor: AppColors.transparent,
+        shape: RoundedRectangleBorder(borderRadius: _cardRadius),
+        titleTextStyle: const TextStyle(
+          color: AppColors.onSurface,
+          fontFamily: 'Outfit',
+          fontSize: AppDimens.sectionTitle,
+          fontWeight: FontWeight.w700,
+        ),
+        contentTextStyle: const TextStyle(
+          color: AppColors.muted,
+          fontSize: AppDimens.body,
+        ),
+      ),
+      bottomNavigationBarTheme: const BottomNavigationBarThemeData(
+        backgroundColor: AppColors.bar,
+        selectedItemColor: AppColors.blue,
+        unselectedItemColor: AppColors.navUnselected,
+        elevation: 0,
+        type: BottomNavigationBarType.fixed,
+      ),
       bottomSheetTheme: const BottomSheetThemeData(
-        backgroundColor: Colors.transparent,
-        modalBackgroundColor: Colors.transparent,
-        surfaceTintColor: Colors.transparent,
+        backgroundColor: AppColors.transparent,
+        modalBackgroundColor: AppColors.transparent,
+        surfaceTintColor: AppColors.transparent,
       ),
       switchTheme: SwitchThemeData(
         thumbColor: WidgetStateProperty.resolveWith(
@@ -124,8 +216,13 @@ abstract final class AppTheme {
         ),
       ),
       snackBarTheme: const SnackBarThemeData(
-        backgroundColor: AppColors.onSurface,
-        contentTextStyle: TextStyle(color: AppColors.onPrimary),
+        backgroundColor: AppColors.raised,
+        contentTextStyle: TextStyle(color: AppColors.onSurface),
+        actionTextColor: AppColors.secondary,
+      ),
+      listTileTheme: const ListTileThemeData(
+        iconColor: AppColors.onSurface,
+        textColor: AppColors.onSurface,
       ),
     );
     final textTheme = base.textTheme
@@ -142,10 +239,29 @@ abstract final class AppTheme {
           headlineMedium: _display(base.textTheme.headlineMedium),
           headlineSmall: _display(base.textTheme.headlineSmall),
           titleLarge: _display(base.textTheme.titleLarge),
+          bodyLarge: base.textTheme.bodyLarge?.copyWith(
+            color: AppColors.onSurface,
+          ),
+          bodyMedium: base.textTheme.bodyMedium?.copyWith(
+            color: AppColors.onSurface,
+          ),
+          bodySmall: base.textTheme.bodySmall?.copyWith(color: AppColors.muted),
+          labelLarge: base.textTheme.labelLarge?.copyWith(
+            color: AppColors.onSurface,
+          ),
+          labelMedium: base.textTheme.labelMedium?.copyWith(
+            color: AppColors.muted,
+          ),
+          labelSmall: base.textTheme.labelSmall?.copyWith(
+            color: AppColors.subtle,
+          ),
         );
     return base.copyWith(textTheme: textTheme);
   }
 
+  /// 兼容旧调用点，统一落到深色主题。
+  static ThemeData light() => dark();
+
   static TextStyle? _display(TextStyle? style) =>
       style?.copyWith(fontFamily: 'Outfit', color: AppColors.onSurface);