feat(ui): 底部导航栏添加文字标签

- 在图标下方添加文字标签（首页、行情、交易、资产、我的）
- 激活状态文字加粗
- 支持主题切换
- 提升用户体验和可识别性

flutter_monisuo/lib/ui/pages/asset/asset_page.dart

@@ -484,6 +484,7 @@ class _HoldingItem extends StatelessWidget {
 void _showDepositDialog(BuildContext context) {
   final amountController = TextEditingController();
   final formKey = GlobalKey<ShadFormState>();
+  final colorScheme = Theme.of(context).colorScheme;
 
   showShadDialog(
     context: context,
@@ -507,7 +508,7 @@ void _showDepositDialog(BuildContext context) {
                       style: GoogleFonts.spaceGrotesk(
                         fontSize: 24,
                         fontWeight: FontWeight.bold,
-                        color: AppColorScheme.darkOnSurface,
+                        color: colorScheme.onSurface,
                       ),
                     ),
                     SizedBox(height: AppSpacing.xs),
@@ -516,7 +517,7 @@ void _showDepositDialog(BuildContext context) {
                       style: TextStyle(
                         fontSize: 12,
                         letterSpacing: 0.1,
-                        color: AppColorScheme.darkOnSurfaceVariant,
+                        color: colorScheme.onSurfaceVariant,
                       ),
                     ),
                   ],
@@ -524,12 +525,12 @@ void _showDepositDialog(BuildContext context) {
                 Container(
                   padding: EdgeInsets.all(AppSpacing.sm),
                   decoration: BoxDecoration(
-                    color: AppColorScheme.darkSurfaceContainerHigh,
+                    color: colorScheme.surfaceContainerHigh,
                     borderRadius: BorderRadius.circular(AppRadius.md),
                   ),
                   child: Icon(
                     LucideIcons.wallet,
-                    color: AppColorScheme.darkSecondary,
+                    color: colorScheme.secondary,
                   ),
                 ),
               ],
@@ -596,6 +597,7 @@ void _showDepositResultDialog(BuildContext context, Map<String, dynamic> data) {
   final amount = data['amount']?.toString() ?? '0.00';
   final walletAddress = data['walletAddress'] as String? ?? '';
   final walletNetwork = data['walletNetwork'] as String? ?? 'TRC20';
+  final colorScheme = Theme.of(context).colorScheme;
 
   showShadDialog(
     context: context,
@@ -612,7 +614,7 @@ void _showDepositResultDialog(BuildContext context, Map<String, dynamic> data) {
               children: [
                 NeonIcon(
                   icon: Icons.check_circle,
-                  color: AppColorScheme.darkTertiary,
+                  color: AppColorScheme.up,
                   size: 24,
                 ),
                 SizedBox(width: AppSpacing.sm),
@@ -621,7 +623,7 @@ void _showDepositResultDialog(BuildContext context, Map<String, dynamic> data) {
                   style: GoogleFonts.spaceGrotesk(
                     fontSize: 20,
                     fontWeight: FontWeight.bold,
-                    color: AppColorScheme.darkOnSurface,
+                    color: colorScheme.onSurface,
                   ),
                 ),
               ],
@@ -635,7 +637,7 @@ void _showDepositResultDialog(BuildContext context, Map<String, dynamic> data) {
               '请向以下地址转账:',
               style: TextStyle(
                 fontSize: 12,
-                color: AppColorScheme.darkOnSurfaceVariant,
+                color: colorScheme.onSurfaceVariant,
               ),
             ),
             SizedBox(height: AppSpacing.sm),
@@ -644,10 +646,10 @@ void _showDepositResultDialog(BuildContext context, Map<String, dynamic> data) {
             Container(
               padding: EdgeInsets.all(AppSpacing.sm),
               decoration: BoxDecoration(
-                color: AppColorScheme.warning.withValues(alpha: 0.1),
+                color: AppColorScheme.warning.withOpacity(0.1),
                 borderRadius: BorderRadius.circular(AppRadius.md),
                 border: Border.all(
-                  color: AppColorScheme.warning.withValues(alpha: 0.2),
+                  color: AppColorScheme.warning.withOpacity(0.2),
                 ),
               ),
               child: Row(
@@ -713,6 +715,8 @@ class _InfoRow extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: [
@@ -720,7 +724,7 @@ class _InfoRow extends StatelessWidget {
           label,
           style: TextStyle(
             fontSize: 12,
-            color: AppColorScheme.darkOnSurfaceVariant,
+            color: colorScheme.onSurfaceVariant,
           ),
         ),
         Text(
@@ -728,7 +732,7 @@ class _InfoRow extends StatelessWidget {
           style: TextStyle(
             fontSize: 12,
             fontWeight: isBold ? FontWeight.bold : FontWeight.normal,
-            color: AppColorScheme.darkOnSurface,
+            color: colorScheme.onSurface,
           ),
         ),
       ],
@@ -744,13 +748,15 @@ class _WalletAddressCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
     return Container(
       padding: EdgeInsets.all(AppSpacing.md),
       decoration: BoxDecoration(
-        color: AppColorScheme.darkSurfaceContainerHigh,
+        color: colorScheme.surfaceContainerHigh,
         borderRadius: BorderRadius.circular(AppRadius.md),
         border: Border.all(
-          color: AppColorScheme.darkOutlineVariant.withValues(alpha: 0.3),
+          color: colorScheme.outlineVariant.withOpacity(0.3),
         ),
       ),
       child: Column(
@@ -761,10 +767,10 @@ class _WalletAddressCard extends StatelessWidget {
               Expanded(
                 child: Text(
                   address,
-                  style: const TextStyle(
+                  style: TextStyle(
                     fontFamily: 'monospace',
                     fontSize: 12,
-                    color: AppColorScheme.darkOnSurface,
+                    color: colorScheme.onSurface,
                   ),
                 ),
               ),
@@ -778,13 +784,13 @@ class _WalletAddressCard extends StatelessWidget {
                 child: Container(
                   padding: EdgeInsets.all(AppSpacing.xs),
                   decoration: BoxDecoration(
-                    color: AppColorScheme.darkPrimary.withValues(alpha: 0.1),
+                    color: colorScheme.primary.withOpacity(0.1),
                     borderRadius: BorderRadius.circular(AppRadius.sm),
                   ),
                   child: Icon(
                     LucideIcons.copy,
                     size: 16,
-                    color: AppColorScheme.darkPrimary,
+                    color: colorScheme.primary,
                   ),
                 ),
               ),
@@ -795,7 +801,7 @@ class _WalletAddressCard extends StatelessWidget {
             '网络: $network',
             style: TextStyle(
               fontSize: 11,
-              color: AppColorScheme.darkOnSurfaceVariant,
+              color: colorScheme.onSurfaceVariant,
             ),
           ),
         ],
@@ -809,6 +815,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
   final addressController = TextEditingController();
   final contactController = TextEditingController();
   final formKey = GlobalKey<ShadFormState>();
+  final colorScheme = Theme.of(context).colorScheme;
 
   showShadDialog(
     context: context,
@@ -827,12 +834,12 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                   Container(
                     padding: EdgeInsets.all(AppSpacing.sm),
                     decoration: BoxDecoration(
-                      color: AppColorScheme.darkPrimary.withValues(alpha: 0.1),
+                      color: colorScheme.primary.withOpacity(0.1),
                       borderRadius: BorderRadius.circular(AppRadius.md),
                     ),
                     child: Icon(
                       LucideIcons.wallet,
-                      color: AppColorScheme.darkPrimary,
+                      color: colorScheme.primary,
                     ),
                   ),
                   SizedBox(width: AppSpacing.sm),
@@ -841,7 +848,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                     style: GoogleFonts.spaceGrotesk(
                       fontSize: 20,
                       fontWeight: FontWeight.bold,
-                      color: AppColorScheme.darkOnSurface,
+                      color: colorScheme.onSurface,
                     ),
                   ),
                 ],
@@ -851,7 +858,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                 'Securely transfer your assets to an external wallet address.',
                 style: TextStyle(
                   fontSize: 12,
-                  color: AppColorScheme.darkOnSurfaceVariant,
+                  color: colorScheme.onSurfaceVariant,
                 ),
               ),
               if (balance != null) ...[
@@ -862,10 +869,10 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                     vertical: AppSpacing.sm,
                   ),
                   decoration: BoxDecoration(
-                    color: AppColorScheme.darkTertiary.withValues(alpha: 0.1),
+                    color: AppColorScheme.up.withOpacity(0.1),
                     borderRadius: BorderRadius.circular(AppRadius.full),
                     border: Border.all(
-                      color: AppColorScheme.darkTertiary.withValues(alpha: 0.2),
+                      color: AppColorScheme.up.withOpacity(0.2),
                     ),
                   ),
                   child: Row(
@@ -876,7 +883,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                         style: TextStyle(
                           fontSize: 10,
                           letterSpacing: 0.1,
-                          color: AppColorScheme.darkOnSurfaceVariant,
+                          color: colorScheme.onSurfaceVariant,
                         ),
                       ),
                       Text(
@@ -884,7 +891,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                         style: TextStyle(
                           fontSize: 12,
                           fontWeight: FontWeight.bold,
-                          color: AppColorScheme.darkTertiary,
+                          color: AppColorScheme.up,
                         ),
                       ),
                     ],
@@ -971,7 +978,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                   Icon(
                     Icons.verified_user,
                     size: 12,
-                    color: AppColorScheme.darkOnSurfaceVariant.withValues(alpha: 0.5),
+                    color: colorScheme.onSurfaceVariant.withOpacity(0.5),
                   ),
                   SizedBox(width: AppSpacing.xs),
                   Text(
@@ -979,7 +986,7 @@ void _showWithdrawDialog(BuildContext context, String? balance) {
                     style: TextStyle(
                       fontSize: 10,
                       letterSpacing: 0.1,
-                      color: AppColorScheme.darkOnSurfaceVariant.withValues(alpha: 0.5),
+                      color: colorScheme.onSurfaceVariant.withOpacity(0.5),
                     ),
                   ),
                 ],
@@ -996,6 +1003,7 @@ void _showTransferDialog(BuildContext context) {
   final controller = TextEditingController();
   final formKey = GlobalKey<ShadFormState>();
   int direction = 1;
+  final colorScheme = Theme.of(context).colorScheme;
 
   showShadDialog(
     context: context,
@@ -1014,7 +1022,7 @@ void _showTransferDialog(BuildContext context) {
                 style: GoogleFonts.spaceGrotesk(
                   fontSize: 20,
                   fontWeight: FontWeight.bold,
-                  color: AppColorScheme.darkOnSurface,
+                  color: colorScheme.onSurface,
                 ),
               ),
               SizedBox(height: AppSpacing.lg),
@@ -1109,6 +1117,8 @@ class _DirectionButton extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
     return GestureDetector(
       onTap: onTap,
       child: AnimatedContainer(
@@ -1116,12 +1126,12 @@ class _DirectionButton extends StatelessWidget {
         padding: EdgeInsets.symmetric(vertical: AppSpacing.sm + AppSpacing.xs),
         decoration: BoxDecoration(
           color: isSelected
-              ? AppColorScheme.darkPrimary.withValues(alpha: 0.15)
+              ? colorScheme.primary.withOpacity(0.15)
-              : AppColorScheme.darkSurfaceContainerHigh,
+              : colorScheme.surfaceContainerHigh,
           borderRadius: BorderRadius.circular(AppRadius.md),
           border: isSelected
               ? Border.all(
-                  color: AppColorScheme.darkPrimary.withValues(alpha: 0.3),
+                  color: colorScheme.primary.withOpacity(0.3),
                 )
               : null,
         ),
@@ -1133,7 +1143,7 @@ class _DirectionButton extends StatelessWidget {
                 Icon(
                   LucideIcons.check,
                   size: 14,
-                  color: AppColorScheme.darkPrimary,
+                  color: colorScheme.primary,
                 )
               else
                 SizedBox(width: 14),
@@ -1142,8 +1152,8 @@ class _DirectionButton extends StatelessWidget {
                 label,
                 style: TextStyle(
                   color: isSelected
-                      ? AppColorScheme.darkPrimary
+                      ? colorScheme.primary
-                      : AppColorScheme.darkOnSurfaceVariant,
+                      : colorScheme.onSurfaceVariant,
                   fontWeight: isSelected ? FontWeight.w600 : FontWeight.normal,
                   fontSize: 12,
                 ),
@@ -1157,6 +1167,8 @@ class _DirectionButton extends StatelessWidget {
 }
 
 void _showResultDialog(BuildContext context, String title, String? message) {
+  final colorScheme = Theme.of(context).colorScheme;
+
   showShadDialog(
     context: context,
     builder: (ctx) => Dialog(
@@ -1172,7 +1184,7 @@ void _showResultDialog(BuildContext context, String title, String? message) {
               style: GoogleFonts.spaceGrotesk(
                 fontSize: 20,
                 fontWeight: FontWeight.bold,
-                color: AppColorScheme.darkOnSurface,
+                color: colorScheme.onSurface,
               ),
             ),
             if (message != null) ...[
@@ -1180,7 +1192,7 @@ void _showResultDialog(BuildContext context, String title, String? message) {
               Text(
                 message,
                 style: TextStyle(
-                  color: AppColorScheme.darkOnSurfaceVariant,
+                  color: colorScheme.onSurfaceVariant,
                 ),
                 textAlign: TextAlign.center,
               ),

flutter_monisuo/lib/ui/pages/main/main_page.dart

@@ -273,7 +273,7 @@ class _NavItemWidget extends StatelessWidget {
       behavior: HitTestBehavior.opaque,
       child: AnimatedContainer(
         duration: const Duration(milliseconds: 300),
-        padding: const EdgeInsets.all(12),
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
         decoration: isSelected
             ? BoxDecoration(
                 color: colorScheme.primary.withOpacity(0.1),
@@ -287,10 +287,24 @@ class _NavItemWidget extends StatelessWidget {
                 ],
               )
             : null,
-        child: Icon(
+        child: Column(
-          item.icon,
+          mainAxisSize: MainAxisSize.min,
-          color: color,
+          children: [
-          size: 24,
+            Icon(
+              item.icon,
+              color: color,
+              size: 24,
+            ),
+            const SizedBox(height: 4),
+            Text(
+              item.label,
+              style: TextStyle(
+                color: color,
+                fontSize: 12,
+                fontWeight: isSelected ? FontWeight.w600 : FontWeight.normal,
+              ),
+            ),
+          ],
         ),
       ),
     );