.category-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

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

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

.timer {
    font-size: 1.5rem;
    color: #dc3545;
    font-weight: bold;
}

.answer-option {
    display: block;
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 2px solid #dee2e6;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.answer-option:hover {
    background-color: #f8f9fa;
    border-color: #adb5bd;
}

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

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

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

.progress {
    height: 10px;
    margin-bottom: 2rem;
}

.score-container {
    text-align: center;
    padding: 2rem;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 10px solid #28a745;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
}

.leaderboard-table th {
    background-color: #f8f9fa;
}

.admin-dashboard .card {
    margin-bottom: 1.5rem;
}

.quiz-editor {
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
}

@media (max-width: 768px) {
    .category-card {
        margin-bottom: 1.5rem;
    }
    
    .answer-option {
        padding: 0.75rem;
    }
    
    .score-circle {
        width: 120px;
        height: 120px;
        font-size: 2rem;
    }
}