update theme

lib/features/auth/presentation/widgets/file_upload_card.dart

@@ -77,25 +77,27 @@ class FileUploadCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
     if (file != null) {
       // Show preview with remove option
-      return _buildPreview(context);
+      return _buildPreview(context, colorScheme);
     } else {
       // Show upload area
-      return _buildUploadArea(context);
+      return _buildUploadArea(context, colorScheme);
     }
   }
 
   /// Build upload area
-  Widget _buildUploadArea(BuildContext context) {
+  Widget _buildUploadArea(BuildContext context, ColorScheme colorScheme) {
     return InkWell(
       onTap: onTap,
       borderRadius: BorderRadius.circular(AppRadius.lg),
       child: Container(
         decoration: BoxDecoration(
-          color: AppColors.white,
+          color: colorScheme.surface,
           border: Border.all(
-            color: const Color(0xFFCBD5E1),
+            color: colorScheme.outlineVariant,
             width: 2,
             strokeAlign: BorderSide.strokeAlignInside,
           ),
@@ -105,16 +107,16 @@ class FileUploadCard extends StatelessWidget {
         child: Column(
           children: [
             // Icon
-            Icon(icon, size: 32, color: AppColors.grey500),
+            Icon(icon, size: 32, color: colorScheme.onSurfaceVariant),
             const SizedBox(height: AppSpacing.sm),
 
             // Title
             Text(
               title,
-              style: const TextStyle(
+              style: TextStyle(
                 fontSize: 14,
                 fontWeight: FontWeight.w600,
-                color: AppColors.grey900,
+                color: colorScheme.onSurface,
               ),
             ),
             const SizedBox(height: AppSpacing.xs),
@@ -122,7 +124,7 @@ class FileUploadCard extends StatelessWidget {
             // Subtitle
             Text(
               subtitle,
-              style: const TextStyle(fontSize: 12, color: AppColors.grey500),
+              style: TextStyle(fontSize: 12, color: colorScheme.onSurfaceVariant),
             ),
           ],
         ),
@@ -131,11 +133,11 @@ class FileUploadCard extends StatelessWidget {
   }
 
   /// Build preview with remove button
-  Widget _buildPreview(BuildContext context) {
+  Widget _buildPreview(BuildContext context, ColorScheme colorScheme) {
     return Container(
       decoration: BoxDecoration(
-        color: AppColors.white,
-        border: Border.all(color: AppColors.grey100, width: 1),
+        color: colorScheme.surface,
+        border: Border.all(color: colorScheme.surfaceContainerHighest, width: 1),
         borderRadius: BorderRadius.circular(AppRadius.md),
       ),
       padding: const EdgeInsets.all(AppSpacing.sm),
@@ -153,10 +155,10 @@ class FileUploadCard extends StatelessWidget {
                 return Container(
                   width: 50,
                   height: 50,
-                  color: AppColors.grey100,
-                  child: const Icon(
+                  color: colorScheme.surfaceContainerHighest,
+                  child: Icon(
                     FontAwesomeIcons.image,
-                    color: AppColors.grey500,
+                    color: colorScheme.onSurfaceVariant,
                     size: 24,
                   ),
                 );
@@ -173,10 +175,10 @@ class FileUploadCard extends StatelessWidget {
               children: [
                 Text(
                   _getFileName(file!.path),
-                  style: const TextStyle(
+                  style: TextStyle(
                     fontSize: 14,
                     fontWeight: FontWeight.w500,
-                    color: AppColors.grey900,
+                    color: colorScheme.onSurface,
                   ),
                   maxLines: 1,
                   overflow: TextOverflow.ellipsis,
@@ -188,9 +190,9 @@ class FileUploadCard extends StatelessWidget {
                     if (snapshot.hasData) {
                       return Text(
                         _formatFileSize(snapshot.data!),
-                        style: const TextStyle(
+                        style: TextStyle(
                           fontSize: 12,
-                          color: AppColors.grey500,
+                          color: colorScheme.onSurfaceVariant,
                         ),
                       );
                     }