    /* Responsiveness */
    /* Mobile first - already done  */

    /* tablet and desktop */
    @media (min-width:600px) {
        .quiz-container {
            padding: 30px;
        }

        h1 {
            font-size: 2rem;
        }

        button {
            font-size: 1.1rem;
            padding: 12px 20px;
        }
    }



    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: Arial, sans-serif;
        display: flex;
        justify-content: center;
        align-items: center;
        min-width: 100vh;
        background: linear-gradient(135deg, #8c92ad, #dec9f3);
        color: #fff;
        padding: 20px;
        transition: background 0.3s, color 0.3s;
    }

    .quiz-container {
        background: #fff;
        color: #333;
        width: 100%;
        padding: 20px;
        border-radius: 16px;
        max-width: 600px;
        margin: auto;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        text-align: center;
    }

    .header {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    h1 {
        font-size: 1.5rem;
    }

    #highScore {
        margin: 15px 0;
        font-weight: bold;
        color: #764ba2;
    }

    .options {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin: 15px 0;

    }

    .options label {
        background: #f5f5f5cb;
        padding: 10px;
        border-radius: 8px;
        cursor: pointer;
        transition: 0.2s ease-in-out;
        color: #000;
    }

    .options label:hover {
        background: #e2e2e2;
    }

    input[type="radio"] {
        margin-right: 8px;
    }

    button {
        padding: 10px 16px;
        border: none;
        border-radius: 8px;
        background: #667eea;
        color: #fff;
        cursor: pointer;
        font-size: 1rem;
        transition: 0.3s;
    }

    button:hover {
        background: #5641c3;
    }

    .progress-bar {
        height: 8px;
        background: #dddd;
        border-radius: 5px;
        overflow: hidden;
        margin: 15px 0;
    }

    .progress {
        height: 100%;
        width: 0;
        background: #667eea;
        transition: width 0.3s ease;
    }


    #result {
        font-size: 1.2rem;
        margin-top: 20px;
        font-weight: bold;
    }



    body.dark {
        background: #121212;
        color: #ddd;
    }

    body.dark .quiz-container {
        background: #1e1e1e;
        color: #fff;
    }

    body.dark label:hover {
        background: #444;
    }

    body.dark button {
        background: #ff9800;
    }

    body.dark button:hover {
        background: #e68900;
    }