body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.container .quiz-container h1 {
    text-align: center;
    margin-bottom: 20px;
    color: blue;
}

.quiz-question {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.quiz-question input {
    margin-right: 10px;
    padding: 8px;
    border-radius: 4px;
}

.question-text {
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 500;
}

.quiz-timer-container {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #fff;
    padding: 12px 18px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 999;
    display: flex;
    align-items: center;
    gap: 10px;
}

.quiz-timer-container .quiz-timer {
    font-size: 18px;
    font-weight: 600;
    color: #4f46e5;
}

.quiz-timer-container .timer-icon {
    font-size: 22px;
    color: #4f46e5;
    animation: pulse 1s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

.options {
    margin: 15px 0;
}

.option {
    margin: 10px 0;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.option:hover {
    background: #f8f9fa;
}

.option.selected {
    background: #e7f4ff;
    border-color: #007bff;
}

.option.correct {
    background: #d4edda;
    border-color: #28a745;
}

.option.incorrect {
    background: #f8d7da;
    border-color: #dc3545;
}

.show-answer-btn {
    background: #007bff;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
    transition: background 0.3s;
}

.show-answer-btn:hover {
    background: #0056b3;
}

.show-answer-btn.showing {
    background: #6c757d;
}

.answer-explanation {
    display: none;
    margin-top: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 5px;
    border-right: 4px solid #007bff;
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    flex-wrap: wrap;
    gap: 10px;
}

.quiz-navigation a {
    text-decoration: none;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    text-align: center;
    min-width: 100px;
    font-size: 16px;
}

.btn-outline {
    background: #007bff;
    border: 2px solid #007bff;
    color: #fff;
}

.btn-outline:hover {
    background: #f8f9fa;
    color: #007bff;
}