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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(to right, #667eea, #764ba2);
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.quiz-container {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 420px;
    text-align: center;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    color: #444;
    margin-bottom: 15px;
    font-weight: 600;
}

#timer {
    font-weight: bold;
    margin-bottom: 10px;
    color: #ff5722;
    font-size: 16px;
}

#question {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 15px;
}

#options button {
    display: block;
    width: 100%;
    margin: 8px 0;
    padding: 12px;
    border: none;
    border-radius: 6px;
    background: #eee;
    cursor: pointer;
    font-size: 15px;
    transition: all 0.3s ease;
}

#options button:hover {
    background: #dcdcdc;
    transform: scale(1.02);
}

#restart-btn {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 14px;
    border-radius: 6px;
    cursor: pointer;
    margin-top: 15px;
    transition: background 0.3s ease;
}

#restart-btn:hover {
    background: #45a049;
}

.review p {
    text-align: left;
    font-size: 14px;
    background: #f8f8f8;
    padding: 6px;
    margin: 4px 0;
    border-radius: 4px;
}

.hidden {
    display: none;
}

@media screen and (max-width: 480px) {
    .quiz-container {
        width: 95%;
    }

    #question {
        font-size: 16px;
    }
}