* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    body {
      height: 100vh;
      background: linear-gradient(135deg, #667eea, #764ba2);
      display: flex;
      justify-content: center;
      align-items: center;
      color: white;
    }

    .container {
      text-align: center;
      max-width: 600px;
      background: rgba(255, 255, 255, 0.1);
      padding: 40px;
      border-radius: 16px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
      backdrop-filter: blur(10px);
    }

    h1 {
      font-size: 3rem;
      margin-bottom: 20px;
    }

    p {
      font-size: 1.2rem;
      margin-bottom: 30px;
    }

    #clock {
      font-size: 2rem;
      margin-bottom: 30px;
      font-weight: bold;
    }

    .btn {
      background: #fff;
      color: #764ba2;
      padding: 12px 24px;
      font-size: 1rem;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn:hover {
      background: #f0f0f0;
      transform: translateY(-2px);
    }

    @media (max-width: 600px) {
      h1 {
        font-size: 2rem;
      }

      p {
        font-size: 1rem;
      }

      #clock {
        font-size: 1.5rem;
      }
    }