feat: enhance responsive layout for media grid component

- Introduced dynamic column count and width calculations based on container size to improve responsiveness.
- Added container width state management and resize event handling for better adaptability to different screen sizes.
- Updated rendering logic to ensure proper display of media items based on calculated dimensions.

src/components/virtualized-media-grid.tsx

@@ -52,9 +52,11 @@ export default function VirtualizedMediaGrid({
     hasMore: true
   });
   const [isLoadingMore, setIsLoadingMore] = useState(false);
+  const [containerWidth, setContainerWidth] = useState(0);
   
   const observerTarget = useRef<HTMLDivElement>(null);
   const loadingRef = useRef(false);
+  const containerRef = useRef<HTMLDivElement>(null);
 
   const formatFileSize = (bytes: number) => {
     if (bytes === 0) return '0 Bytes';
@@ -146,6 +148,38 @@ export default function VirtualizedMediaGrid({
     }
   }, [pagination, searchTerm, fetchItems]);
 
+  // Calculate responsive column count and width
+  const getColumnCount = useCallback(() => {
+    if (containerWidth === 0) return 6;
+    if (containerWidth < 640) return 2;
+    if (containerWidth < 768) return 3;
+    if (containerWidth < 1024) return 4;
+    if (containerWidth < 1280) return 5;
+    if (containerWidth < 1536) return 6;
+    return 7;
+  }, [containerWidth]);
+
+  const getColumnWidth = useCallback(() => {
+    const cols = getColumnCount();
+    // Account for padding (16px on each side) and gaps between cards (16px total per row)
+    const availableWidth = containerWidth - 32; // 16px padding on each side
+    const gapWidth = (cols - 1) * 16; // 16px gap between each column
+    return Math.floor((availableWidth - gapWidth) / cols);
+  }, [containerWidth, getColumnCount]);
+
+  // Update container width on resize
+  useEffect(() => {
+    const updateWidth = () => {
+      if (containerRef.current) {
+        setContainerWidth(containerRef.current.offsetWidth);
+      }
+    };
+
+    updateWidth();
+    window.addEventListener('resize', updateWidth);
+    return () => window.removeEventListener('resize', updateWidth);
+  }, []);
+
   useEffect(() => {
     setLoading(true);
     fetchItems(0, searchTerm);
@@ -169,7 +203,7 @@ export default function VirtualizedMediaGrid({
   }, [loadMoreItems, pagination.hasMore]);
 
   const Cell = ({ columnIndex, rowIndex, style }: any) => {
-    const columnCount = 6;
+    const columnCount = getColumnCount();
     const index = rowIndex * columnCount + columnIndex;
     const item = items[index];
 
@@ -245,18 +279,8 @@ export default function VirtualizedMediaGrid({
     );
   };
 
-  const getColumnCount = () => {
-    if (typeof window === 'undefined') return 6;
-    const width = window.innerWidth;
-    if (width < 640) return 2;
-    if (width < 768) return 3;
-    if (width < 1024) return 4;
-    if (width < 1280) return 5;
-    if (width < 1536) return 6;
-    return 7;
-  };
-
   const columnCount = getColumnCount();
+  const columnWidth = getColumnWidth();
   const rowCount = Math.ceil(items.length / columnCount);
 
   if (loading && items.length === 0) {
@@ -281,7 +305,7 @@ export default function VirtualizedMediaGrid({
 
   return (
     <div className="min-h-screen p-6">
-      <div className="max-w-7xl mx-auto">
+      <div ref={containerRef} className="max-w-7xl mx-auto">
         {/* Header */}
         <div className="mb-6">
           <div className="flex items-center gap-4 mb-4">
@@ -320,15 +344,15 @@ export default function VirtualizedMediaGrid({
         </div>
 
         {/* Media Grid */}
-        {items.length > 0 ? (
+        {items.length > 0 && containerWidth > 0 ? (
           <div className="w-full">
             <FixedSizeGrid
               columnCount={columnCount}
-              columnWidth={window.innerWidth / columnCount - 16}
+              columnWidth={columnWidth}
               height={Math.min(window.innerHeight - 200, rowCount * 300)}
               rowCount={rowCount}
               rowHeight={300}
-              width={window.innerWidth - 48}
+              width={containerWidth}
               itemData={items}
             >
               {Cell}
@@ -340,7 +364,7 @@ export default function VirtualizedMediaGrid({
               </div>
             )}
           </div>
-        ) : (
+        ) : items.length === 0 ? (
           <div className="text-center py-20">
             <div className="max-w-sm mx-auto">
               <div className="w-16 h-16 bg-muted rounded-2xl flex items-center justify-center mx-auto mb-4">
@@ -356,6 +380,10 @@ export default function VirtualizedMediaGrid({
               </p>
             </div>
           </div>
+        ) : (
+          <div className="flex items-center justify-center min-h-[60vh]">
+            <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary"></div>
+          </div>
         )}
       </div>
     </div>