update theme selection

lib/features/main/presentation/pages/main_scaffold.dart

@@ -8,14 +8,12 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:worker/core/router/app_router.dart';
-import 'package:worker/core/theme/colors.dart';
 import 'package:worker/features/account/presentation/pages/account_page.dart';
 import 'package:worker/features/home/presentation/pages/home_page.dart';
 import 'package:worker/features/loyalty/presentation/pages/loyalty_page.dart';
 import 'package:worker/features/main/presentation/providers/current_page_provider.dart';
 import 'package:worker/features/news/presentation/pages/news_list_page.dart';
 import 'package:worker/features/notifications/presentation/pages/notifications_page.dart';
-import 'package:worker/features/promotions/presentation/pages/promotions_page.dart';
 
 /// Main Scaffold Page
 ///
@@ -31,6 +29,7 @@ class MainScaffold extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final currentIndex = ref.watch(currentPageIndexProvider);
+    final colorScheme = Theme.of(context).colorScheme;
 
     // Define pages
     final pages = [
@@ -48,11 +47,11 @@ class MainScaffold extends ConsumerWidget {
               padding: const EdgeInsets.only(bottom: 20),
               child: FloatingActionButton(
                 onPressed: () => context.push(RouteNames.chat),
-                backgroundColor: const Color(0xFF35C6F4), // Accent cyan color
+                backgroundColor: colorScheme.tertiary,
                 elevation: 4,
-                child: const Icon(
+                child: Icon(
                   Icons.chat_bubble,
-                  color: AppColors.white,
+                  color: colorScheme.onTertiary,
                   size: 28,
                 ),
               ),
@@ -60,7 +59,7 @@ class MainScaffold extends ConsumerWidget {
           : null,
       bottomNavigationBar: Container(
         decoration: BoxDecoration(
-          color: Colors.white,
+          color: colorScheme.surface,
           boxShadow: [
             BoxShadow(
               color: Colors.black.withValues(alpha: 0.05),
@@ -74,9 +73,9 @@ class MainScaffold extends ConsumerWidget {
             height: 70,
             child: BottomNavigationBar(
               type: BottomNavigationBarType.fixed,
-              backgroundColor: Colors.white,
-              selectedItemColor: AppColors.primaryBlue,
-              unselectedItemColor: const Color(0xFF666666),
+              backgroundColor: colorScheme.surface,
+              selectedItemColor: colorScheme.primary,
+              unselectedItemColor: colorScheme.onSurfaceVariant,
               selectedFontSize: 11,
               unselectedFontSize: 11,
               iconSize: 24,
@@ -109,17 +108,17 @@ class MainScaffold extends ConsumerWidget {
                             vertical: 2,
                           ),
                           decoration: BoxDecoration(
-                            color: AppColors.danger,
+                            color: colorScheme.error,
                             borderRadius: BorderRadius.circular(12),
                           ),
                           constraints: const BoxConstraints(
                             minWidth: 20,
                             minHeight: 20,
                           ),
-                          child: const Text(
+                          child: Text(
                             '5',
                             style: TextStyle(
-                              color: Colors.white,
+                              color: colorScheme.onError,
                               fontSize: 11,
                               fontWeight: FontWeight.w700,
                             ),