body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f0f0f;
    color: white;
  }
  
  .container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 20px;
  }
  
  .card {
    background: #1a1a1a;
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  }
  
  h1 {
    margin-bottom: 10px;
    font-size: 22px;
  }
  
  .subtitle {
    color: #bbb;
    font-size: 14px;
    margin-bottom: 15px;
  }
  
  .loading {
    color: #888;
    margin-bottom: 20px;
  }
  
  .btn {
    display: inline-block;
    padding: 12px 20px;
    background: #ff0050;
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    margin-bottom: 20px;
  }
  
  .btn:hover {
    background: #e60047;
  }
  
  .warning {
    margin-top: 20px;
    font-size: 14px;
    color: #ccc;
    line-height: 1.4;
    background: rgba(255,255,255,0.05);
    padding: 12px;
    border-radius: 10px;
  }