body {
      margin: 0;
      padding: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      text-align: center;
      color: #fff;
    }

    .message-box {
      background: #ffffff;
      color: #333;
      padding: 40px 20px;
      border-radius: 12px;
      box-shadow: 0 8px 25px rgba(0,0,0,0.2);
      max-width: 600px;
      width: 90%;
      animation: fadeIn 1.2s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .message-box h1 {
      font-size: 30px;
      margin-bottom: 20px;
      color: #2c5364;
    }

    .message-box p {
      font-size: 18px;
      margin-bottom: 12px;
      line-height: 1.5;
    }

    .message-box a {
      color: #0066cc;
      text-decoration: none;
      font-weight: bold;
      transition: 0.3s;
    }

    .message-box a:hover {
      color: #2c5364;
      text-decoration: underline;
    }

    @media (max-width: 480px) {
      .message-box h1 {
        font-size: 24px;
      }
      .message-box p {
        font-size: 16px;
      }
    }