Refactor modal close behavior and improve styling

- Changed modal close event from `@click.away` to `@click.self` for better control over closing modals.
- Updated various modal button styles for consistency and improved accessibility.
- Adjusted transition durations for modal animations to enhance user experience.
- Added aria-labels to close buttons for better screen reader support.

extensions/Servers/Proxmox/Http/Controllers/ServerIconController.php

@@ -12,20 +12,27 @@ class ServerIconController
     {
         $request->validate([
             'icon' => 'nullable|string|max:64',
-            'color' => 'nullable|string|max:32',
-            'prefix' => 'nullable|string|max:32',
+            'color' => 'nullable|string|max:32|regex:/^[a-zA-Z0-9#\-\/]+$/',
+            'prefix' => 'nullable|string|max:32|regex:/^[a-zA-Z0-9\-]+$/',
         ]);
 
-        $server = Server::where('id', $serverId)
-            ->where('user_id', Auth::id())
-            ->firstOrFail();
+        try {
+            $server = Server::where('id', $serverId)
+                ->where('user_id', Auth::id())
+                ->firstOrFail();
 
-        $server->user_set_icon = $request->input('icon');
-        $server->user_set_icon_color = $request->input('color');
-        $server->user_set_icon_prefix = $request->input('prefix', 'ri');
-        $server->save();
+            $server->user_set_icon = $request->input('icon');
+            $server->user_set_icon_color = $request->input('color');
+            $server->user_set_icon_prefix = $request->input('prefix', 'ri');
+            $server->save();
 
-        return response()->json(['success' => true]);
+            return response()->json(['success' => true]);
+        } catch (\Exception $e) {
+            return response()->json([
+                'success' => false,
+                'error' => 'Failed to update icon.',
+            ], 500);
+        }
     }
 
     public function show($serverId)