Update shadow properties in CommunityStructureHeader for improved visual aesthetics. Adjusted blur radius and offset to enhance the header's appearance in the space management interface.

lib/pages/space_management_v2/main_module/widgets/community_structure_header.dart

@@ -20,9 +20,9 @@ class CommunityStructureHeader extends StatelessWidget {
         color: ColorsManager.whiteColors,
         boxShadow: [
           BoxShadow(
-            color: ColorsManager.shadowBlackColor,
-            blurRadius: 8,
-            offset: const Offset(0, 4),
+            color: ColorsManager.shadowBlackColor.withValues(alpha: 0.1),
+            blurRadius: 20,
+            offset: const Offset(0, 1),
           ),
         ],
       ),