feat: Einlösen und Bearbeiten einheitlich groß auf der Detailseite

app/vouchers/[id]/page.tsx

@@ -127,14 +127,14 @@ export default function VoucherDetailPage({ params }: { params: Promise<{ id: st
         {v.status !== "eingeloest" && (
           <button
             onClick={redeem}
-            className="h-12 w-full rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99] sm:flex-1"
+            className="h-12 flex-1 rounded-field bg-brand-600 text-sm font-semibold text-white transition-colors hover:bg-brand-700 active:scale-[0.99]"
           >
             Einlösen
           </button>
         )}
         <Link
           href={`/vouchers/${v.id}/edit`}
-          className="inline-flex h-12 items-center justify-center rounded-field border border-line bg-white px-5 text-sm font-semibold transition-colors hover:border-brand-600 hover:text-brand-700 sm:w-auto sm:px-8"
+          className="inline-flex h-12 flex-1 items-center justify-center rounded-field border border-line bg-white text-sm font-semibold transition-colors hover:border-brand-600 hover:text-brand-700"
         >
           Bearbeiten
         </Link>