backerup-website/frontend/app/files/[token]/not-found.tsx

import Link from "next/link";

export default function NotFound() {
  return (
    <div className="flex min-h-[60vh] flex-col items-center justify-center px-6 text-center">
      <p className="text-6xl">404</p>
      <h1 className="mt-4 text-2xl font-bold text-white">File not found</h1>
      <p className="mt-2 text-slate-400">This share link may have expired or never existed.</p>
      <Link href="/browse" className="mt-6 text-sm text-cyan-400 hover:underline">
        Browse all shared files →
      </Link>
    </div>
  );
}