/* 
 * Game Library - Global Styles
 * Shared styles for all games in the library
 */

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    /* 80s Arcade Color Scheme - Vibrant Neon */
    --primary-bg: #0a0a1f;
    --secondary-bg: #1a1a3a;
    --tertiary-bg: #2a2a4a;
    --primary-color: #00ffff; /* Neon Cyan */
    --secondary-color: #ff00ff; /* Neon Magenta */
    --accent-color: #ffff00; /* Neon Yellow */
    --neon-pink: #ff006e;
    --neon-green: #00ff41;
    --neon-blue: #00d9ff;
    --neon-orange: #ff6b00;
    --text-primary: #ffffff;
    --text-secondary: #00ffff;
    --player-x-color: #00ffff;
    --player-o-color: #ff006e;
    --win-color: #00ff41;
    --loss-color: #ff006e;
    --draw-color: #ffff00;
    
    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-xxl: 40px;
    
    /* Border radius */
    --radius-sm: 5px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 15px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, #0a0a1f 0%, #1a1a3a 50%, #0a0a1f 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    padding: var(--spacing-sm);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* Retro scan lines effect overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 255, 0.03) 0px,
        rgba(0, 255, 255, 0.03) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
}

/* Animated grid background */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 0, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translateY(0); }
    100% { transform: translateY(50px); }
}

/* Accessibility - Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Screen reader only - visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Container */
.container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* Header - 80s Arcade Cabinet Style */
header {
    background: linear-gradient(135deg, #1a1a3a 0%, #2a2a4a 100%);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border: 3px solid var(--primary-color);
    text-align: center;
    box-shadow: 
        0 0 20px rgba(0, 255, 255, 0.5),
        0 0 40px rgba(255, 0, 255, 0.3),
        inset 0 0 30px rgba(0, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

/* Animated glow border effect */
header::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, 
        var(--primary-color), 
        var(--secondary-color), 
        var(--neon-pink), 
        var(--accent-color),
        var(--primary-color)
    );
    background-size: 400% 400%;
    border-radius: var(--radius-lg);
    z-index: -1;
    animation: glowRotate 6s ease infinite;
    opacity: 0.7;
}

@keyframes glowRotate {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    font-size: clamp(0.9rem, 3vw, 1.1rem);
    color: var(--text-secondary);
}

/* Buttons */
button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1.1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-normal);
    font-family: inherit;
}

button:hover,
button:focus {
    background: var(--secondary-color);
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

button.secondary {
    background: var(--tertiary-bg);
}

button.secondary:hover,
button.secondary:focus {
    background: #3d4571;
}

/* Footer */
footer {
    text-align: center;
    margin-top: auto;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: clamp(0.8rem, 2.5vw, 0.9rem);
}

/* Responsive design */
@media (max-width: 600px) {
    body {
        padding: var(--spacing-xs);
    }

    header {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    body {
        background: #000;
    }

    button,
    header {
        border-width: 3px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Accessibility Panel - Easy access for accessible gaming */
.accessibility-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid var(--accent-color);
    cursor: pointer;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 4px 20px rgba(74, 144, 226, 0.4);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.accessibility-btn:hover,
.accessibility-btn:focus {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(74, 144, 226, 0.6);
    outline: 3px solid var(--accent-color);
    outline-offset: 3px;
}

.accessibility-btn:focus {
    animation: pulse-accessibility 1s ease infinite;
}

@keyframes pulse-accessibility {
    0%, 100% { box-shadow: 0 4px 20px rgba(74, 144, 226, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(74, 144, 226, 0.8); }
}

.accessibility-btn[aria-expanded="true"] {
    background: var(--accent-color);
    color: #000;
}

.accessibility-panel {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 320px;
    max-width: calc(100vw - 40px);
    background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--tertiary-bg) 100%);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    z-index: 9998;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    display: none;
    max-height: 70vh;
    overflow-y: auto;
}

.accessibility-panel.open {
    display: block;
    animation: slideUp 0.2s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.accessibility-panel h2 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 10px;
}

.accessibility-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(74, 144, 226, 0.2);
}

.accessibility-option:last-child {
    border-bottom: none;
}

.accessibility-option label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    cursor: pointer;
    flex: 1;
}

.accessibility-option .option-name {
    font-weight: 600;
    color: var(--text-primary);
}

.accessibility-option .option-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Custom toggle switch */
.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--tertiary-bg);
    border: 2px solid var(--primary-color);
    border-radius: 28px;
    transition: 0.3s;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background-color: var(--text-primary);
    border-radius: 50%;
    transition: 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--primary-color);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
    background-color: var(--accent-color);
}

.toggle-switch input:focus + .toggle-slider {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

/* Accessibility shortcut hint */
.accessibility-shortcuts {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--primary-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.accessibility-shortcuts h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.shortcut-list {
    list-style: none;
}

.shortcut-list li {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
}

.shortcut-key {
    background: var(--tertiary-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
    border: 1px solid var(--primary-color);
}

/* Accessibility category styling */
.a11y-category {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(74, 144, 226, 0.3);
}

.a11y-category:last-of-type {
    border-bottom: none;
}

.a11y-category-title {
    font-size: 0.95rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.a11y-guidelines-note {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    text-align: center;
}

.a11y-guidelines-note a {
    color: var(--primary-color);
    text-decoration: underline;
}

/* ============================================
   ACCESSIBILITY MODES (Game Accessibility Guidelines)
   ============================================ */

/* VISION: High contrast mode */
body.high-contrast-mode {
    --primary-bg: #000;
    --secondary-bg: #111;
    --tertiary-bg: #222;
    --text-primary: #fff;
    --text-secondary: #ddd;
    --primary-color: #ffff00;
    --accent-color: #00ffff;
}

body.high-contrast-mode .accessibility-btn,
body.high-contrast-mode button {
    border-width: 3px;
}

/* VISION: Large text mode */
body.large-text-mode {
    font-size: 1.2em;
}

body.large-text-mode h1 {
    font-size: clamp(2rem, 6vw, 3rem);
}

body.large-text-mode .game-title {
    font-size: 2.2rem;
}

body.large-text-mode .game-description {
    font-size: 1.15rem;
}

/* VISION: Dyslexia-friendly font */
body.dyslexia-font-mode {
    font-family: 'OpenDyslexic', 'Comic Sans MS', 'Arial', sans-serif;
    letter-spacing: 0.05em;
    word-spacing: 0.1em;
    line-height: 1.8;
}

/* VISION: Hide background movement */
body.hide-background-mode .retro-banner::before,
body.hide-background-mode [class*="animate"],
body.hide-background-mode .pulse,
body.hide-background-mode .scanlines::before {
    animation: none !important;
    display: none;
}

body.hide-background-mode {
    background: var(--primary-bg) !important;
    background-image: none !important;
}

/* MOTOR: Reduced motion - targets non-essential animations only */
body.reduced-motion-mode *:not(.accessibility-btn):not(.toggle-slider) {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
}

/* MOTOR: Large touch targets */
body.large-targets-mode button,
body.large-targets-mode a,
body.large-targets-mode .game-card,
body.large-targets-mode [role="button"],
body.large-targets-mode input,
body.large-targets-mode select {
    min-height: 48px;
    min-width: 48px;
    padding: 12px 16px;
}

body.large-targets-mode .toggle-switch {
    transform: scale(1.2);
    margin-left: 10px;
}

/* COGNITIVE: Simplified interface */
body.simplified-ui-mode .retro-banner,
body.simplified-ui-mode .high-scores,
body.simplified-ui-mode .arcade-frame::before,
body.simplified-ui-mode .arcade-frame::after,
body.simplified-ui-mode .neon-glow,
body.simplified-ui-mode .pixel-art {
    display: none !important;
}

body.simplified-ui-mode .game-card {
    background: var(--secondary-bg);
    border: 2px solid var(--text-secondary);
}

/* COGNITIVE: Highlight interactive elements */
body.highlight-interactive-mode button,
body.highlight-interactive-mode a,
body.highlight-interactive-mode .game-card,
body.highlight-interactive-mode [role="button"],
body.highlight-interactive-mode input,
body.highlight-interactive-mode select,
body.highlight-interactive-mode [tabindex]:not([tabindex="-1"]) {
    outline: 2px dashed var(--accent-color);
    outline-offset: 2px;
}

body.highlight-interactive-mode button:hover,
body.highlight-interactive-mode a:hover,
body.highlight-interactive-mode .game-card:hover {
    outline-style: solid;
    outline-width: 3px;
}

/* HEARING: Visual sound cues */
body.visual-cues-mode::after {
    content: '🔇 Visual cues enabled';
    position: fixed;
    bottom: 80px;
    left: 20px;
    background: var(--secondary-bg);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    border: 1px solid var(--primary-color);
    z-index: 9000;
    opacity: 0.9;
}

/* GENERAL: Enhanced focus indicators */
body.enhanced-focus-mode *:focus {
    outline: 4px solid var(--accent-color) !important;
    outline-offset: 4px !important;
    box-shadow: 0 0 0 6px rgba(255, 204, 0, 0.3) !important;
}

body.enhanced-focus-mode *:focus:not(:focus-visible) {
    outline: none !important;
    box-shadow: none !important;
}

body.enhanced-focus-mode *:focus-visible {
    outline: 4px solid var(--accent-color) !important;
    outline-offset: 4px !important;
    box-shadow: 0 0 0 6px rgba(255, 204, 0, 0.3) !important;
}

/* Mobile accessibility panel adjustments */
@media (max-width: 400px) {
    .accessibility-panel {
        right: 10px;
        bottom: 80px;
        width: calc(100vw - 20px);
    }
    
    .accessibility-btn {
        right: 10px;
        bottom: 10px;
        width: 50px;
        height: 50px;
    }
}