.qef-quiz-container {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background-color: #f9f9f9;
    font-family: Arial, sans-serif;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.qef-quiz-container h2 {
    text-align: center;
    color: #d32f2f;
}

.qef-question {
    margin-bottom: 20px;
}

.qef-options {
    list-style: none;
    padding: 0;
}

.qef-option {
    background: #fff;
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    border-radius: 5px;
    transition: background 0.3s;
}

.qef-option:hover {
    background: #f0f0f0;
}

.qef-option.correct {
    background-color: #c8e6c9;
    border-color: #4caf50;
}

.qef-option.wrong {
    background-color: #ffcdd2;
    border-color: #f44336;
}

.qef-option.disabled {
    pointer-events: none;
}

#qef-next-btn, #qef-restart-btn {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #d32f2f;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 10px;
}

#qef-next-btn:hover, #qef-restart-btn:hover {
    background-color: #b71c1c;
}

#qef-result-container {
    text-align: center;
    padding: 20px;
}

#qef-score-text {
    font-size: 18px;
    font-weight: bold;
}