/* ============================================
   Conversion Quest - Accessible Styles
   ============================================ */

/* CSS Custom Properties for theming */
:root {
    /* Colors - High contrast, color-blind friendly */
    --color-primary: #6c5ce7;
    --color-primary-dark: #5b4cdb;
    --color-secondary: #00b894;
    --color-secondary-dark: #00a383;
    --color-accent: #fdcb6e;
    --color-error: #d63031;
    --color-success: #00b894;
    --color-warning: #fdcb6e;
    --color-background: #f8f9fa;
    --color-surface: #ffffff;
    --color-text: #2d3436;
    --color-text-muted: #636e72;
    --color-border: #dfe6e9;
    
    /* Typography */
    --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-base: 16px;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Focus */
    --focus-ring: 0 0 0 3px rgba(108, 92, 231, 0.5);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ============================================
   Base Styles
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    color: var(--color-text);
    line-height: 1.6;
}

/* ============================================
   Accessibility
   ============================================ */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    z-index: 1000;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    top: var(--spacing-md);
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Focus styles */
:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    box-shadow: var(--focus-ring);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --shadow-sm: none;
        --shadow-md: none;
        --shadow-lg: none;
    }
}

/* ============================================
   Layout
   ============================================ */

header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-content {
    flex: 1;
    min-width: 200px;
}

header h1 {
    font-size: var(--font-size-3xl);
    margin: 0 0 var(--spacing-xs);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.tagline {
    font-size: var(--font-size-lg);
    margin: 0;
    opacity: 0.9;
}

/* Audio Controls */
.audio-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.audio-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-md);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-xl);
}

.audio-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
    transform: scale(1.05);
}

.audio-btn:focus-visible {
    outline: 2px solid white;
    outline-offset: 2px;
}

.audio-btn.muted {
    background: rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

.audio-btn.music-enabled {
    background: rgba(108, 92, 231, 0.4);
    border-color: rgba(108, 92, 231, 0.8);
    animation: pulse-music 2s ease infinite;
}

@keyframes pulse-music {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

main {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-xl);
}

footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: white;
}

.footer-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-base);
    margin: var(--spacing-xs);
    transition: background var(--transition-fast);
}

.footer-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.footer-text {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ============================================
   Screens
   ============================================ */

.screen {
    display: none;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    animation: fadeIn var(--transition-normal);
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Start Screen
   ============================================ */

.intro-card {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.intro-text {
    font-size: var(--font-size-lg);
    margin: 0 0 var(--spacing-sm);
}

.category-selection {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.category-btn {
    background: var(--color-surface);
    border: 3px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.category-btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.category-btn:focus-visible {
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
}

.category-icon {
    font-size: var(--font-size-3xl);
}

.category-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.progress-preview {
    background: var(--color-background);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
}

.progress-preview h3 {
    margin: 0 0 var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
}

#total-stars-display {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.stars-container {
    font-size: var(--font-size-xl);
    cursor: pointer;
    transition: transform var(--transition-fast);
    user-select: none;
}

.stars-container:hover,
.stars-container:focus {
    transform: scale(1.1);
}

/* Star tooltip - hidden by default, shown on hover/focus/click */
.star-tooltip {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-width: 280px;
    max-width: 320px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-sm);
    pointer-events: none;
}

#total-stars-display:hover .star-tooltip,
#total-stars-display:focus-within .star-tooltip,
.stars-container:hover + .star-tooltip,
.stars-container:focus + .star-tooltip,
#total-stars-display.tooltip-active .star-tooltip {
    opacity: 1;
    visibility: visible;
}

.star-tooltip p {
    margin: 0 0 var(--spacing-sm);
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.star-tooltip ul {
    margin: 0;
    padding-left: var(--spacing-md);
    list-style-type: none;
}

.star-tooltip li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
}

/* Mobile optimization for tooltip */
@media (max-width: 480px) {
    .star-tooltip {
        min-width: 260px;
        max-width: 90vw;
        left: 50%;
        transform: translateX(-50%);
    }
}

/* ============================================
   Game Screen
   ============================================ */

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Character Avatar */
.character-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.character {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-normal);
}

.character.happy {
    animation: bounce 0.5s ease;
}

.character.excited {
    animation: jump 0.4s ease;
}

.character.thinking {
    animation: sway 1s ease infinite;
}

.character.celebrating {
    animation: spin-happy 0.6s ease;
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

@keyframes jump {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px) scale(1.1); }
}

@keyframes sway {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}

@keyframes spin-happy {
    0% { transform: rotate(0) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
    100% { transform: rotate(360deg) scale(1); }
}

.character-face {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.character-eyes {
    display: flex;
    gap: var(--spacing-md);
}

.eye {
    font-size: var(--font-size-lg);
    display: inline-block;
    transition: transform var(--transition-fast);
}

.character.happy .eye,
.character.excited .eye {
    animation: blink 2s ease infinite;
}

@keyframes blink {
    0%, 90%, 100% { transform: scaleY(1); }
    95% { transform: scaleY(0.1); }
}

.character-mouth {
    font-size: var(--font-size-xl);
    transition: all var(--transition-fast);
}

.character-accessory {
    position: absolute;
    top: -10px;
    font-size: var(--font-size-2xl);
    animation: float 2s ease infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* Character Speech Bubble */
.character-bubble {
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-sm);
    position: relative;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.character-bubble.visible {
    opacity: 1;
    transform: translateY(0);
}

.character-bubble::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid var(--color-primary);
}

/* Question Category Icon */
.question-category-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
    animation: float 3s ease infinite;
}

.back-btn {
    background: none;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.back-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.level-display, .score-display {
    background: var(--color-background);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
}

.level-number {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
}

.score-display {
    color: var(--color-success);
}

.combo-indicator {
    text-align: center;
    padding: var(--spacing-sm);
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
    font-size: var(--font-size-lg);
    opacity: 0;
    transform: scale(0.9);
    transition: all var(--transition-fast);
}

.combo-indicator.visible {
    opacity: 1;
    transform: scale(1);
}

.combo-indicator.hot {
    animation: pulse 0.5s ease infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.combo-icon {
    margin-right: var(--spacing-xs);
}

.question-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.question-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: 0 0 var(--spacing-lg);
    line-height: 1.4;
}

.hint-area {
    text-align: center;
    margin-top: var(--spacing-md);
}

.hint-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.hint-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.hint-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.hint-text {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    font-style: italic;
    min-height: 3rem;
    display: none;
}

.hint-text.visible {
    display: block;
}

.answer-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.answer-input {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-xl);
    border: 3px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.answer-input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
}

.answer-input.error {
    border-color: var(--color-error);
    animation: shake 0.5s ease;
}

.answer-input.success {
    border-color: var(--color-success);
    background: #e6fffa;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.answer-help {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin: 0;
}

.submit-btn {
    background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    color: white;
    border: none;
    padding: var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.feedback {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: 600;
    min-height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.feedback.correct {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border: 2px solid #28a745;
    animation: glow-correct 0.5s ease;
}

.feedback.incorrect {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 2px solid #dc3545;
    animation: shake-feedback 0.4s ease;
}

@keyframes glow-correct {
    0%, 100% { box-shadow: 0 0 5px rgba(40, 167, 69, 0.3); }
    50% { box-shadow: 0 0 20px rgba(40, 167, 69, 0.6); }
}

@keyframes shake-feedback {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-8px); }
    80% { transform: translateX(8px); }
}

/* Enhanced answer input animations */
.answer-input.success {
    border-color: var(--color-success);
    background: linear-gradient(135deg, #e6fffa 0%, #c6f6d5 100%);
    animation: pulse-success 0.4s ease;
}

.answer-input.error {
    border-color: var(--color-error);
    animation: shake 0.5s ease;
}

@keyframes pulse-success {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); box-shadow: 0 0 15px rgba(0, 184, 148, 0.4); }
}

/* ============================================
   Level Complete Screen
   ============================================ */

#level-complete-screen {
    text-align: center;
}

#level-complete-screen h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.stars-earned {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    min-height: 4rem;
}

.stars-earned-count {
    animation: popIn 0.5s ease;
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.level-message {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.level-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.action-btn {
    padding: var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.action-btn.primary {
    background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
    color: white;
}

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-btn.secondary {
    background: var(--color-background);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.action-btn.secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================
   Badge Screen
   ============================================ */

#badge-screen {
    text-align: center;
}

#badge-screen h2 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.badge-display {
    font-size: 6rem;
    margin-bottom: var(--spacing-lg);
    animation: spinIn 0.6s ease;
}

@keyframes spinIn {
    0% {
        opacity: 0;
        transform: rotate(-180deg) scale(0);
    }
    100% {
        opacity: 1;
        transform: rotate(0) scale(1);
    }
}

.badge-name {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.badge-description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   Badges Collection
   ============================================ */

#badges-screen {
    text-align: center;
}

#badges-screen h2 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-xl);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.badge-item {
    background: var(--color-background);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.badge-item .badge-icon {
    font-size: var(--font-size-2xl);
    filter: grayscale(100%);
    opacity: 0.5;
    transition: all var(--transition-fast);
}

.badge-item.unlocked .badge-icon {
    filter: grayscale(0%);
    opacity: 1;
}

.badge-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text);
}

.badge-status {
    font-size: 0.625rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--color-border);
    color: var(--color-text-muted);
}

.badge-item.unlocked .badge-status {
    background: var(--color-success);
    color: white;
}

/* ============================================
   Confetti Canvas
   ============================================ */

#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 480px) {
    header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    header h1 {
        font-size: var(--font-size-2xl);
    }

    .tagline {
        font-size: var(--font-size-base);
    }

    .audio-controls {
        order: -1;
        width: 100%;
        justify-content: center;
    }

    .audio-btn {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }

    main {
        padding: 0 var(--spacing-sm) var(--spacing-lg);
    }

    .screen {
        padding: var(--spacing-lg);
    }

    /* Character smaller on mobile */
    .character {
        width: 60px;
        height: 60px;
    }

    .character-face {
        transform: scale(0.85);
    }

    .character-bubble {
        font-size: var(--font-size-sm);
        max-width: 200px;
    }

    .question-category-icon {
        font-size: 2rem;
    }

    .category-selection {
        grid-template-columns: 1fr;
    }

    .question-text {
        font-size: var(--font-size-lg);
    }

    .answer-input {
        font-size: var(--font-size-lg);
        padding: var(--spacing-md);
    }

    .game-header {
        justify-content: center;
    }

    .back-btn {
        order: 1;
        width: 100%;
        margin-top: var(--spacing-sm);
    }
}

/* Large text support */
@media (min-width: 768px) {
    main {
        max-width: 700px;
    }
    
    .category-selection {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    header, footer, .category-selection, .answer-form, .action-btn {
        display: none;
    }
    
    .screen {
        box-shadow: none;
        padding: 0;
    }
}