update loaing

docs/md/CART_DEBOUNCE.md

@@ -219,7 +219,7 @@ class _CartPageState extends ConsumerState<CartPage> {
             }
           : null,
       child: _isSyncing
-          ? CircularProgressIndicator() // Show loading while syncing
+          ? const CustomLoadingIndicator() // Show loading while syncing
           : Text('Tiến hành đặt hàng'),
     );
   }

docs/md/CODE_EXAMPLES.md

@@ -768,5 +768,5 @@ end
 - ✅ Vietnamese localization
 - ✅ CachedNetworkImage for all remote images
 - ✅ Proper error handling
-- ✅ Loading states (CircularProgressIndicator)
+- ✅ Loading states (CustomLoadingIndicator)
 - ✅ Empty states with helpful messages

docs/md/REVIEWS_API_INTEGRATION_SUMMARY.md

@@ -257,7 +257,7 @@ int stars = apiRatingToStars(0.8); // 4
 - Added date formatting function (`_formatDate`)
 
 **States**:
-1. **Loading**: Shows CircularProgressIndicator
+1. **Loading**: Shows CustomLoadingIndicator
 2. **Error**: Shows error icon and message
 3. **Empty**: Shows "Chưa có đánh giá nào" with call-to-action
 4. **Data**: Shows rating overview and review list
@@ -553,7 +553,7 @@ Widget build(BuildContext context, WidgetRef ref) {
         },
       );
     },
-    loading: () => CircularProgressIndicator(),
+    loading: () => const CustomLoadingIndicator(),
     error: (error, stack) => Text('Error: $error'),
   );
 }

docs/md/REVIEWS_ARCHITECTURE.md

@@ -416,7 +416,7 @@ RatingProvider  CountProvider     in UI components)
 ```
 1. Initial State (Loading)
    ├─► productReviewsProvider returns AsyncValue.loading()
-   └─► UI shows CircularProgressIndicator
+   └─► UI shows CustomLoadingIndicator
 
 2. Loading State → Data State
    ├─► API call succeeds

docs/md/REVIEWS_CODE_EXAMPLES.md

@@ -60,7 +60,7 @@ class ReviewsListPage extends ConsumerWidget {
           );
         },
         loading: () => const Center(
-          child: CircularProgressIndicator(),
+          child: const CustomLoadingIndicator(),
         ),
         error: (error, stack) => Center(
           child: Text('Error: $error'),
@@ -263,7 +263,7 @@ class _SimpleReviewFormState extends ConsumerState<SimpleReviewForm> {
             child: ElevatedButton(
               onPressed: _isSubmitting ? null : _submitReview,
               child: _isSubmitting
-                  ? const CircularProgressIndicator()
+                  ? const const CustomLoadingIndicator()
                   : const Text('Submit Review'),
             ),
           ),
@@ -351,7 +351,7 @@ class _PaginatedReviewsListState
             padding: const EdgeInsets.all(16),
             child: Center(
               child: _isLoading
-                  ? const CircularProgressIndicator()
+                  ? const const CustomLoadingIndicator()
                   : ElevatedButton(
                       onPressed: _loadMoreReviews,
                       child: const Text('Load More'),
@@ -430,7 +430,7 @@ class RefreshableReviewsList extends ConsumerWidget {
             Center(
               child: Padding(
                 padding: EdgeInsets.all(40),
-                child: CircularProgressIndicator(),
+                child: const CustomLoadingIndicator(),
               ),
             ),
           ],
@@ -540,7 +540,7 @@ class _FilteredReviewsListState extends ConsumerState<FilteredReviewsList> {
               );
             },
             loading: () => const Center(
-              child: CircularProgressIndicator(),
+              child: const CustomLoadingIndicator(),
             ),
             error: (error, stack) => Center(
               child: Text('Error: $error'),
@@ -662,7 +662,7 @@ class ReviewsWithRetry extends ConsumerWidget {
         );
       },
       loading: () => const Center(
-        child: CircularProgressIndicator(),
+        child: const CustomLoadingIndicator(),
       ),
       error: (error, stack) => Center(
         child: Column(

docs/md/REVIEWS_QUICK_REFERENCE.md

@@ -30,7 +30,7 @@ final reviewsAsync = ref.watch(productReviewsProvider(itemId));
 
 reviewsAsync.when(
   data: (reviews) => /* show reviews */,
-  loading: () => CircularProgressIndicator(),
+  loading: () => const CustomLoadingIndicator(),
   error: (error, stack) => /* show error */,
 );
 ```