feat(theme): migrate to new theme system with static color methods

- Convert instance methods to static methods in AppColorScheme for
  getChangeColor and getChangeBackgroundColor
- Update main.dart to use ShadThemeData with AppColorScheme color
  schemes instead of createLight/DarkShadTheme functions
- Add app_theme.dart import to main.dart
- Refactor asset_card.dart and coin_card.dart to call static methods
  via AppColorScheme class
- Add app_spacing.dart import to action_buttons_row.dart
- Replace SizedBox with proper spacing constants in action buttons row

flutter_monisuo/lib/core/theme/app_color_scheme.dart

@@ -426,14 +426,14 @@ class AppColorScheme {
 
   /// 获取买入按钮渐变（主题感知）- 用于盈利展示
 
-/// 获取涨跌颜色（明暗通用）
-Color getChangeColor(bool isUp) => isUp ? AppColorScheme.up : AppColorScheme.down;
+  /// 获取涨跌颜色（明暗通用）
+  static Color getChangeColor(bool isUp) => isUp ? AppColorScheme.up : AppColorScheme.down;
 
-/// 获取涨跌背景色（带透明度）
-Color getChangeBackgroundColor(bool isUp, {double opacity = 0.15}) {
-  return isUp
-    ? AppColorScheme.up.withValues(alpha: opacity)
-    : AppColorScheme.down.withValues(alpha: opacity);
-}
+  /// 获取涨跌背景色（带透明度）
+  static Color getChangeBackgroundColor(bool isUp, {double opacity = 0.15}) {
+    return isUp
+        ? AppColorScheme.up.withValues(alpha: opacity)
+        : AppColorScheme.down.withValues(alpha: opacity);
+  }
 }
 

flutter_monisuo/lib/main.dart

@@ -10,6 +10,7 @@ import 'package:shared_preferences/shared_preferences.dart';
 import 'core/network/dio_client.dart';
 import 'core/storage/local_storage.dart';
 import 'core/theme/app_color_scheme.dart';
+import 'core/theme/app_theme.dart';
 import 'core/event/app_event_bus.dart';
 import 'data/services/user_service.dart';
 import 'data/services/market_service.dart';
@@ -68,8 +69,14 @@ class MyApp extends StatelessWidget {
         builder: (context, themeProvider, _) {
           return ShadApp.custom(
             themeMode: themeProvider.themeMode,
-            theme: createLightShadTheme(),
-            darkTheme: createDarkShadTheme(),
+            theme: ShadThemeData(
+              colorScheme: AppColorScheme.lightShad,
+              brightness: Brightness.light,
+            ),
+            darkTheme: ShadThemeData(
+              colorScheme: AppColorScheme.darkShad,
+              brightness: Brightness.dark,
+            ),
             appBuilder: _buildMaterialApp,
           );
         },

flutter_monisuo/lib/ui/components/asset_card.dart

@@ -227,13 +227,13 @@ class AssetCardCompact extends StatelessWidget {
               Container(
                 padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
                 decoration: BoxDecoration(
-                  color: getChangeBackgroundColor(isValueUp),
+                  color: AppColorScheme.getChangeBackgroundColor(isValueUp),
                   borderRadius: BorderRadius.circular(AppRadius.sm),
                 ),
                 child: Text(
                   change!,
                   style: TextStyle(
-                    color: getChangeColor(isValueUp),
+                    color: AppColorScheme.getChangeColor(isValueUp),
                     fontWeight: FontWeight.w600,
                   ),
                 ),

flutter_monisuo/lib/ui/components/coin_card.dart

@@ -81,13 +81,13 @@ class CoinCard extends StatelessWidget {
             Container(
               padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
               decoration: BoxDecoration(
-                color: getChangeBackgroundColor(isUp),
+                color: AppColorScheme.getChangeBackgroundColor(isUp),
                 borderRadius: BorderRadius.circular(AppRadius.sm),
               ),
               child: Text(
                 change,
                 style: TextStyle(
-                  color: getChangeColor(isUp),
+                  color: AppColorScheme.getChangeColor(isUp),
                   fontWeight: FontWeight.w600,
                 ),
               ),

flutter_monisuo/lib/ui/pages/asset/components/action_buttons_row.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:lucide_icons_flutter/lucide_icons.dart';
+import '../../../../core/theme/app_spacing.dart';
 import '../../../../core/theme/app_theme.dart';
 
 /// 操作按钮行 — .pen node pIpHe
@@ -35,7 +36,7 @@ class ActionButtonsRow extends StatelessWidget {
           bgColor: bgColor,
           onTap: onDeposit,
         ),
-        const SizedBox(width: AppSpacing.sm + AppSpacing.xs),
+        const SizedBox(width: 12),
         ActionButton(
           icon: LucideIcons.arrowDownLeft,
           label: '提现',
@@ -43,7 +44,7 @@ class ActionButtonsRow extends StatelessWidget {
           bgColor: bgColor,
           onTap: onWithdraw,
         ),
-        const SizedBox(width: AppSpacing.sm + AppSpacing.xs),
+        const SizedBox(width: 12),
         ActionButton(
           icon: LucideIcons.repeat,
           label: '划转',
@@ -96,7 +97,7 @@ class ActionButton extends StatelessWidget {
                 color: accentColor,
               ),
             ),
-            const SizedBox(height: AppSpacing.xs + 2),
+            const SizedBox(height: 6),
             Text(
               label,
               style: AppTextStyles.labelLarge(context).copyWith(

flutter_monisuo/lib/ui/pages/market/market_page.dart

@@ -320,7 +320,7 @@ class _MiniBarChart extends StatelessWidget {
               height: h,
               decoration: BoxDecoration(
                 color: barColor,
-                borderRadius: BorderRadius.circular(AppRadius.xs),
+                borderRadius: BorderRadius.circular(AppRadius.sm),
               ),
             ),
           ),

flutter_monisuo/lib/ui/pages/mine/components/logout_button.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:google_fonts/google_fonts.dart';
 import '../../../../core/theme/app_color_scheme.dart';
 import '../../../../core/theme/app_spacing.dart';
+import '../../../../core/theme/app_theme.dart';
 
 /// 退出登录按钮
 class LogoutButton extends StatelessWidget {

flutter_monisuo/lib/ui/pages/mine/components/profile_card.dart

@@ -23,7 +23,7 @@ class ProfileCard extends StatelessWidget {
             : colorScheme.surfaceContainerHigh,
         borderRadius: BorderRadius.circular(AppRadius.lg),
         border: Border.all(
-          color: colorScheme.outlineVariant.withOpacity(0.15),
+          color: colorScheme.outlineVariant.withValues(alpha: 0.15),
         ),
       ),
       child: Row(
@@ -47,10 +47,8 @@ class ProfileCard extends StatelessWidget {
                 const SizedBox(height: 4),
                 Text(
                   '普通用户',
-                  style: GoogleFonts.inter(
-                    fontSize: 10,
+                  style: AppTextStyles.bodyMedium(context).copyWith(
                     fontWeight: FontWeight.normal,
-                    color: colorScheme.onSurfaceVariant,
                   ),
                 ),
               ],

flutter_monisuo/lib/ui/pages/trade/components/confirm_dialog.dart

@@ -49,14 +49,14 @@ class ConfirmDialog extends StatelessWidget {
               ),
             ),
             SizedBox(height: AppSpacing.lg),
-            _dialogRow('交易对', '$coinCode/USDT', colorScheme),
+            _dialogRow(context, '交易对', '$coinCode/USDT', colorScheme),
             SizedBox(height: AppSpacing.sm),
-            _dialogRow('委托价格', '$price USDT', colorScheme),
+            _dialogRow(context, '委托价格', '$price USDT', colorScheme),
             SizedBox(height: AppSpacing.sm),
-            _dialogRow('交易金额', '$amount USDT', colorScheme,
+            _dialogRow(context, '交易金额', '$amount USDT', colorScheme,
                 valueColor: actionColor),
             SizedBox(height: AppSpacing.sm),
-            _dialogRow('交易数量', '$quantity $coinCode', colorScheme),
+            _dialogRow(context, '交易数量', '$quantity $coinCode', colorScheme),
             SizedBox(height: AppSpacing.lg),
             Row(
               children: [
@@ -87,7 +87,7 @@ class ConfirmDialog extends StatelessWidget {
     );
   }
 
-  Widget _dialogRow(String label, String value, ColorScheme colorScheme,
+  Widget _dialogRow(BuildContext context, String label, String value, ColorScheme colorScheme,
       {Color? valueColor}) {
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,

flutter_monisuo/lib/ui/pages/trade/components/trade_form_card.dart

@@ -172,13 +172,13 @@ class TradeFormCard extends StatelessWidget {
           // 设计稿：gap:8，圆角sm，bg-tertiary，高32
           Row(
             children: [
-              _buildPctButton('25%', 0.25, colorScheme),
+              _buildPctButton(context, '25%', 0.25, colorScheme),
               const SizedBox(width: AppSpacing.sm),
-              _buildPctButton('50%', 0.5, colorScheme),
+              _buildPctButton(context, '50%', 0.5, colorScheme),
               const SizedBox(width: AppSpacing.sm),
-              _buildPctButton('75%', 0.75, colorScheme),
+              _buildPctButton(context, '75%', 0.75, colorScheme),
               const SizedBox(width: AppSpacing.sm),
-              _buildPctButton('100%', 1.0, colorScheme),
+              _buildPctButton(context, '100%', 1.0, colorScheme),
             ],
           ),
           const SizedBox(height: AppSpacing.md + AppSpacing.sm),
@@ -203,7 +203,7 @@ class TradeFormCard extends StatelessWidget {
   }
 
   /// 百分比按钮 - 设计稿：圆角sm，bg-tertiary，高32
-  Widget _buildPctButton(String label, double pct, ColorScheme colorScheme) {
+  Widget _buildPctButton(BuildContext context, String label, double pct, ColorScheme colorScheme) {
     return Expanded(
       child: GestureDetector(
         onTap: () => onFillPercent(pct),