transform: translateY(-1px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn-primary {
      background: #007bff;
      color: white;
    }

    .btn-primary:hover {
      background: #0056b3;
    }

    .btn-secondary {
      background: #6c757d;
      color: white;
    }

    .btn-secondary:hover {
      background: #545b62;
    }

    .btn-success {
      background: #28a745;
      color: white;
    }

    .btn-success:hover {
    