fix checkout/cart

lib/core/router/app_router.dart

@@ -230,8 +230,12 @@ final routerProvider = Provider<GoRouter>((ref) {
       GoRoute(
         path: RouteNames.checkout,
         name: RouteNames.checkout,
-        pageBuilder: (context, state) =>
-            MaterialPage(key: state.pageKey, child: const CheckoutPage()),
+        pageBuilder: (context, state) => MaterialPage(
+          key: state.pageKey,
+          child: CheckoutPage(
+            checkoutData: state.extra as Map<String, dynamic>?,
+          ),
+        ),
       ),
 
       // Favorites Route

lib/core/theme/app_theme.dart

@@ -22,7 +22,6 @@ class AppTheme {
       tertiary: AppColors.accentCyan,
       error: AppColors.danger,
       surface: AppColors.white,
-      background: AppColors.grey50,
     );
 
     return ThemeData(
@@ -298,7 +297,6 @@ class AppTheme {
       tertiary: AppColors.primaryBlue,
       error: AppColors.danger,
       surface: const Color(0xFF1E1E1E),
-      background: const Color(0xFF121212),
     );
 
     return ThemeData(