/* Enhanced Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    }
    
    .language-card, .stats-card, .results-card, .question-card {
        background: rgba(0, 0, 0, 0.4);
        border-color: rgba(255, 255, 255, 0.15);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    }
    
    .language-card:hover, .stats-card:hover {
        background: rgba(0, 0, 0, 0.6);
        border-color: rgba(255, 255, 255, 0.25);
    }
    
    .option {
        background: rgba(0, 0, 0, 0.3);
        border-color: rgba(255, 255, 255, 0.15);
        color: rgba(255, 255, 255, 0.9);
    }
    
    .option:hover {
        background: rgba(0, 0, 0, 0.5);
        border-color: rgba(138, 43, 226, 0.6);
    }
    
    .option.correct {
        background: rgba(34, 197, 94, 0.2);
        border-color: rgba(34, 197, 94, 0.6);
        color: rgba(34, 197, 94, 1);
    }
    
    .option.incorrect {
        background: rgba(239, 68, 68, 0.2);
        border-color: rgba(239, 68, 68, 0.6);
        color: rgba(239, 68, 68, 1);
    }
    
    .nav-btn, .action-btn, .back-btn {
        background: rgba(0, 0, 0, 0.4);
        border-color: rgba(255, 255, 255, 0.2);
        color: rgba(255, 255, 255, 0.9);
    }
    
    .nav-btn:hover, .action-btn:hover, .back-btn:hover {
        background: rgba(0, 0, 0, 0.6);
        border-color: rgba(138, 43, 226, 0.6);
        color: white;
    }
    
    .code-preview {
        background: rgba(0, 0, 0, 0.6);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .loading-screen {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    }
}

/* Enhanced Button Contrast for Better Accessibility */
.action-btn, .nav-btn, .back-btn, .next-btn {
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.action-btn::before, .nav-btn::before, .back-btn::before, .next-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.action-btn:hover::before, .nav-btn:hover::before, .back-btn:hover::before, .next-btn:hover::before {
    left: 100%;
}

/* Improved Focus States for Accessibility */
.language-card:focus, .option:focus, .action-btn:focus, .nav-btn:focus, .back-btn:focus, .next-btn:focus {
    outline: 3px solid rgba(138, 43, 226, 0.8);
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(138, 43, 226, 0.2);
}

/* Enhanced Mobile Touch Targets */
@media (max-width: 768px) {
    .language-card, .option, .action-btn, .nav-btn, .back-btn, .next-btn {
        min-height: 48px;
        touch-action: manipulation;
    }
    
    .language-card {
        padding: 30px 20px;
        margin-bottom: 15px;
    }
    
    .option {
        padding: 18px 20px;
        margin-bottom: 12px;
        font-size: 1rem;
        line-height: 1.4;
    }
    
    .action-btn, .nav-btn, .back-btn, .next-btn {
        padding: 14px 24px;
        font-size: 1rem;
        min-width: 120px;
    }
    
    /* Improved spacing for mobile */
    .question-card {
        padding: 25px 20px;
        margin: 15px;
    }
    
    .results-card {
        padding: 35px 25px;
        margin: 15px;
    }
    
    /* Better text sizing for mobile */
    .main-title {
        font-size: 2.2rem;
        line-height: 1.2;
    }
    
    .category-header h2 {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .quiz-title {
        font-size: 1.4rem;
    }
    
    #question-text {
        font-size: 1.1rem;
        line-height: 1.5;
    }
}

/* Ultra-small screens (phones in portrait) */
@media (max-width: 480px) {
    .page {
        padding: 10px;
    }
    
    .main-title {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    .subtitle {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .difficulty-legend {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    
    .legend-item {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .category-header {
        margin: 30px 0 20px;
    }
    
    .category-header h2 {
        font-size: 1.5rem;
    }
    
    .category-header p {
        font-size: 0.9rem;
    }
    
    .languages-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 0 10px;
    }
    
    .language-card {
        padding: 20px 15px;
    }
    
    .card-logo {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }
    
    .language-card h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .language-card p {
        font-size: 0.85rem;
        margin-bottom: 12px;
    }
    
    .quiz-header {
        padding: 15px;
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .quiz-title-container {
        order: -1;
    }
    
    .progress-container {
        width: 100%;
        max-width: 300px;
    }
    
    .question-card {
        padding: 20px 15px;
        margin: 10px;
    }
    
    #question-text {
        font-size: 1rem;
        line-height: 1.4;
        margin-bottom: 20px;
    }
    
    .option {
        padding: 15px;
        font-size: 0.95rem;
        margin-bottom: 10px;
    }
    
    .results-card {
        padding: 25px 15px;
        margin: 10px;
    }
    
    .score-circle {
        width: 100px;
        height: 100px;
        border-width: 6px;
        margin-bottom: 20px;
    }
    
    #final-score {
        font-size: 2rem;
    }
    
    .score-total {
        font-size: 1rem;
    }
    
    #results-title {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }
    
    #results-message {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }
    
    .results-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .action-btn {
        width: 100%;
        padding: 12px 20px;
        font-size: 0.95rem;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .language-card, .option, .stats-card, .results-card, .question-card {
        border-width: 3px;
        border-color: rgba(255, 255, 255, 0.8);
    }
    
    .language-card:hover, .option:hover, .stats-card:hover {
        border-color: rgba(138, 43, 226, 1);
        background: rgba(138, 43, 226, 0.2);
    }
    
    .option.correct {
        border-color: rgba(34, 197, 94, 1);
        background: rgba(34, 197, 94, 0.3);
    }
    
    .option.incorrect {
        border-color: rgba(239, 68, 68, 1);
        background: rgba(239, 68, 68, 0.3);
    }
    
    .action-btn, .nav-btn, .back-btn, .next-btn {
        border-width: 2px;
        border-color: rgba(255, 255, 255, 0.8);
        font-weight: 700;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-shape {
        animation: none;
    }
    
    .loading-spinner {
        animation: none;
        border: 4px solid rgba(255, 255, 255, 0.3);
        border-top: 4px solid white;
    }
}

/* Print styles */
@media print {
    .background-animation, .loading-screen, .floating-shape {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .page {
        background: white !important;
        color: black !important;
    }
    
    .language-card, .option, .stats-card, .results-card, .question-card {
        background: white !important;
        border: 2px solid black !important;
        color: black !important;
        box-shadow: none !important;
    }
}