Fix UI

frontend/src/pages/AssignmentDetailPage.tsx

@@ -344,14 +344,13 @@ export function AssignmentDetailPage() {
 
       {/* Dispute button */}
       {assignment.can_dispute && !dispute && !showDisputeForm && (
-        <NeonButton
-          variant="outline"
-          className="w-full border-red-500/50 text-red-400 hover:bg-red-500/10"
+        <button
+          className="w-full flex items-center justify-center gap-2 px-4 py-2.5 rounded-lg font-semibold transition-all duration-200 border-2 border-red-500/50 text-red-400 bg-transparent hover:bg-red-500/10 hover:border-red-500"
           onClick={() => setShowDisputeForm(true)}
-          icon={<Flag className="w-4 h-4" />}
         >
+          <Flag className="w-4 h-4" />
           Оспорить выполнение
-        </NeonButton>
+        </button>
       )}
 
       {/* Dispute creation form */}