.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.quiz-header {
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #e52d27, #b31217);
    color: white;
    padding: 40px 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
}

.quiz-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.quiz-header h1 {
    font-size: 3em;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    position: relative;
}

.quiz-header p {
    font-size: 1.2em;
    margin: 10px 0 0 0;
    opacity: 0.9;
    position: relative;
}

.game-info {
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    backdrop-filter: blur(10px);
}

.game-info p {
    margin: 0;
    font-size: 0.9em;
}

.category-selection h2 {
    text-align: center;
    color: white;
    margin-bottom: 30px;
    font-size: 2em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.category-card {
    background: rgba(255,255,255,0.95);
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.category-card:hover::before {
    left: 100%;
}

.category-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: #e52d27;
    box-shadow: 0 8px 25px rgba(229, 45, 39, 0.3);
}

.category-card h3 {
    color: #333;
    margin: 0 0 10px 0;
    font-size: 1.4em;
}

.category-card p {
    color: #666;
    margin: 0;
    font-size: 0.9em;
}

.category-icon {
    font-size: 2em;
    margin-top: 10px;
    opacity: 0.7;
}

.quiz-progress {
    background: rgba(255,255,255,0.95);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

.progress-bar {
    background: #f0f0f0;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    background: linear-gradient(90deg, #e52d27, #b31217);
    height: 100%;
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.quiz-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    color: #333;
}

.timer {
    background: #e52d27;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-family: monospace;
    font-weight: bold;
}

.question-container {
    background: rgba(255,255,255,0.95);
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

.question-text {
    font-size: 1.4em;
    color: #333;
    margin-bottom: 30px;
    line-height: 1.5;
    text-align: center;
}

.options-grid {
    display: grid;
    gap: 15px;
}

.option {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    font-size: 1.1em;
    display: flex;
    align-items: center;
    gap: 15px;
}

.option:hover {
    background: #e9ecef;
    border-color: #dee2e6;
    transform: translateX(5px);
}

.option.selected {
    border-color: #007bff;
    background: #e7f3ff;
}

.option.correct {
    border-color: #28a745;
    background: #d4edda;
    color: #155724;
}

.option.wrong {
    border-color: #dc3545;
    background: #f8d7da;
    color: #721c24;
}

.option-letter {
    background: #333;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9em;
}

.option.correct .option-letter {
    background: #28a745;
}

.option.wrong .option-letter {
    background: #dc3545;
}

.next-btn {
    background: linear-gradient(135deg, #e52d27, #b31217);
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 8px;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 0 auto;
    font-weight: bold;
}

.next-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(229, 45, 39, 0.4);
}

.quiz-results {
    text-align: center;
}

.results-card {
    background: rgba(255,255,255,0.95);
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    max-width: 500px;
    margin: 0 auto;
    backdrop-filter: blur(10px);
}

.score-display {
    font-size: 3em;
    font-weight: bold;
    color: #e52d27;
    margin: 20px 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.time-display {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 20px;
}

.performance-rating {
    margin: 20px 0;
}

.rating-badge {
    background: linear-gradient(135deg, #ffd700, #ffed4a);
    color: #333;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 1.2em;
    display: inline-block;
}

.name-input {
    margin-top: 30px;
}

.name-input input {
    width: 100%;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1.1em;
    margin-bottom: 15px;
    text-align: center;
    transition: border-color 0.3s ease;
}

.name-input input:focus {
    outline: none;
    border-color: #e52d27;
    box-shadow: 0 0 0 3px rgba(229, 45, 39, 0.1);
}

#save-result {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    font-weight: bold;
}

#save-result:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
}

.results-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

#play-again, #view-dashboard {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
}

#play-again {
    background: #007bff;
    color: white;
}

#play-again:hover {
    background: #0056b3;
    transform: translateY(-2px);
}

#view-dashboard {
    background: #6c757d;
    color: white;
}

#view-dashboard:hover {
    background: #545b62;
    transform: translateY(-2px);
}

/* Dashboard Styles */
#quiz-dashboard {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.dashboard-header {
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #e52d27, #b31217);
    color: white;
    padding: 40px 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.dashboard-header h1 {
    font-size: 2.5em;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: rgba(255,255,255,0.95);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card h3 {
    color: #666;
    margin: 0 0 10px 0;
    font-size: 1.1em;
}

.stat-number {
    font-size: 2.5em;
    font-weight: bold;
    color: #e52d27;
}

.leaderboard {
    background: rgba(255,255,255,0.95);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

.leaderboard table {
    width: 100%;
    border-collapse: collapse;
}

.leaderboard th,
.leaderboard td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.leaderboard th {
    background: #f8f9fa;
    font-weight: bold;
    color: #333;
    font-size: 0.9em;
}

.leaderboard tr:hover {
    background: #f8f9fa;
}

.leaderboard tr:first-child {
    background: linear-gradient(135deg, #ffd700, #ffed4a);
    font-weight: bold;
}

.leaderboard tr:nth-child(2) {
    background: #f8f9fa;
}

.leaderboard tr:nth-child(3) {
    background: #fff3cd;
}

@media (max-width: 768px) {
    .quiz-container {
        padding: 10px;
    }
    
    .quiz-header h1 {
        font-size: 2em;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .question-container {
        padding: 20px;
    }
    
    .leaderboard table {
        font-size: 0.9em;
    }
    
    .leaderboard th,
    .leaderboard td {
        padding: 10px 5px;
    }
    
    .results-actions {
        flex-direction: column;
    }
}