body { transition: background-color 0.3s ease, color 0.3s ease; }
    .btn-custom {
      width: 100%;
      background: linear-gradient(135deg, #111, #2b2b2b);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 40px;
      padding: 15px 24px;
      font-size: 1rem;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: #fff;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
      transition: all .3s ease;
      cursor: pointer;
    }
    .btn-custom:hover {
      transform: translateY(-2px);
      box-shadow: 0 15px 40px rgba(0, 0, 0, 0.7);
      background: linear-gradient(135deg, #1a1a1a, #3a3a3a);
    }
    #status { text-align: center; padding: 15px; border-radius: 8px; margin-top: 20px; transition: all 0.3s ease; }
    #status.success { background-color: rgba(46, 204, 113, 0.1); border: 1px solid rgba(46, 204, 113, 0.3); color: #27ae60; }
    #status.error { background-color: rgba(231, 76, 60, 0.1); border: 1px solid rgba(231, 76, 60, 0.3); color: #e74c3c; }