body {
      font-family: 'Poppins', sans-serif;
      background: linear-gradient(135deg, grey, #1e3a8a);
      color: white;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      margin: 0;
    }

    .quiz-container {
      background: rgba(255, 255, 255, 0.1);
      padding: 30px;
      border-radius: 16px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
      width: 400px;
      text-align: center;
      backdrop-filter: blur(10px);
    }

    h2 {
      margin-bottom: 20px;
    }

    .question {
      font-size: 18px;
      margin-bottom: 15px;
    }

    .options {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    button.option {
      background-color: dimgrey;
      color: white;
      border: none;
      padding: 10px;
      border-radius: 8px;
      cursor: pointer;
      font-size: 15px;
      transition: background 0.3s;
    }

    button.option:hover {
      background-color: #1e40af;
    }

    .next-btn {
      margin-top: 20px;
      padding: 10px 20px;
      background-color: #16a34a;
      border: none;
      border-radius: 8px;
      color: white;
      cursor: pointer;
      font-size: 16px;
      display: none;
    }

    .next-btn:hover {
      background-color: #15803d;
    }

    .result {
      font-size: 20px;
      font-weight: bold;
      margin-top: 20px;
      color: #fbbf24;
    }