export default function AuthLoading() {
  return (
    <div className="rounded-lg border bg-card p-8 shadow-sm" aria-busy="true" aria-label="Đang tải trang đăng nhập">
      <div className="space-y-6">
        {/* Logo / title skeleton */}
        <div className="text-center">
          <div className="mx-auto h-8 w-24 animate-pulse rounded bg-muted" />
          <div className="mx-auto mt-3 h-5 w-40 animate-pulse rounded bg-muted" />
          <div className="mx-auto mt-2 h-4 w-56 animate-pulse rounded bg-muted" />
        </div>

        {/* Form fields skeleton */}
        <div className="space-y-4">
          <div>
            <div className="h-4 w-16 animate-pulse rounded bg-muted" />
            <div className="mt-2 h-10 w-full animate-pulse rounded-md bg-muted" />
          </div>
          <div>
            <div className="h-4 w-20 animate-pulse rounded bg-muted" />
            <div className="mt-2 h-10 w-full animate-pulse rounded-md bg-muted" />
          </div>
        </div>

        {/* Submit button skeleton */}
        <div className="h-10 w-full animate-pulse rounded-md bg-muted" />

        {/* OAuth buttons skeleton */}
        <div className="space-y-3">
          <div className="flex items-center gap-3">
            <div className="h-px flex-1 bg-muted" />
            <div className="h-3 w-12 animate-pulse rounded bg-muted" />
            <div className="h-px flex-1 bg-muted" />
          </div>
          <div className="h-10 w-full animate-pulse rounded-md bg-muted" />
          <div className="h-10 w-full animate-pulse rounded-md bg-muted" />
        </div>
      </div>
    </div>
  );
}
