label { font-weight: 600; }
  .custom-file-btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem .75rem;
    border-radius: .375rem;
    border: 1px solid #ced4da;
    background: #fff;
    cursor: pointer;
  }
  .custom-file-btn:hover { background: #f8f9fa; }
  .file-name { font-size: .9rem; color: #6c757d; margin-left: .5rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 60%; }
  .invalid-feedback { display: none; }
  .is-invalid + .invalid-feedback { display: block; }