/**
 * Accessibility Showcase Styles
 * Demonstrates accessible design patterns
 */

/* ============================================
   Design Tokens (iSpiral)
   ============================================ */
:root {
    /* Colors */
    --color-bg: #0a0f0d;
    --color-surface: #131a16;
    --color-surface-raised: #1a231e;
    --color-text: #e8efe9;
    --color-text-muted: #a3b5a8;
    --color-accent: #4a7c4e;
    --color-accent-hover: #5a9c5e;
    --color-gold: #d4a373;
    --color-border: #1e2922;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Courier New', monospace;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Focus */
    --focus-width: 2px;
    --focus-offset: 2px;
    --focus-color: var(--color-accent);
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-top: var(--spacing-xl); }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin: 0 0 var(--spacing-sm) 0;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-surface);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-gold);
}

/* ============================================
   Skip Link (Level 1)
   ============================================ */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-bg);
    padding: var(--spacing-xs) var(--spacing-md);
    text-decoration: none;
    z-index: 9999;
    font-weight: 600;
    border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--color-gold);
    outline-offset: var(--focus-offset);
}

/* ============================================
   Focus Visibility (Level 1)
   ============================================ */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: var(--focus-width) solid var(--focus-color);
    outline-offset: var(--focus-offset);
}

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

/* ============================================
   Header
   ============================================ */
.demo-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
}

.demo-header h1 {
    margin: 0 0 var(--spacing-xs) 0;
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin: 0 0 var(--spacing-lg) 0;
}

.a11y-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid currentColor;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:hover {
    background: var(--color-surface-raised);
    transform: translateY(-1px);
}

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

.btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

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

.btn[aria-pressed="true"] {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

/* ============================================
   Main Content
   ============================================ */
main:focus {
    outline: none;
}

.intro {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.intro ul {
    margin: var(--spacing-sm) 0 0 0;
    padding-left: var(--spacing-lg);
}

/* ============================================
   Demo Sections
   ============================================ */
.demo-section {
    margin-bottom: var(--spacing-xl);
}

.demo-section h2 {
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.demo-example {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.pattern-description {
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.demo-live {
    background: var(--color-surface-raised);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.code-annotation {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(74, 124, 78, 0.1);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.annotation-label {
    display: block;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.code-annotation code {
    background: transparent;
    color: var(--color-text);
}

/* ============================================
   Landmark Visualization
   ============================================ */
.landmark-visualization {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.landmark {
    padding: var(--spacing-md);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    background: rgba(74, 124, 78, 0.1);
}

.landmark strong {
    color: var(--color-accent);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.landmark p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Focus Demo Group
   ============================================ */
.focus-demo-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.demo-button,
.demo-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
}

.demo-button {
    background: var(--color-accent);
    border: 2px solid var(--color-accent);
    color: var(--color-bg);
    font-weight: 600;
    cursor: pointer;
}

.demo-link {
    background: transparent;
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
    display: inline-block;
}

.demo-input,
.demo-select {
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
}

/* ============================================
   Clickable Cards (Level 2)
   ============================================ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.demo-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.demo-card--clickable {
    cursor: pointer;
}

.demo-card--clickable:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(74, 124, 78, 0.2);
}

.demo-card--clickable:focus-visible {
    outline: var(--focus-width) solid var(--focus-color);
    outline-offset: 4px;
    transform: translateY(-4px);
}

.demo-card--clickable:active {
    transform: translateY(-2px);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.demo-card h4 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-accent);
    text-align: center;
}

.demo-card p {
    margin: 0;
    color: var(--color-text-muted);
    text-align: center;
    font-size: 0.9rem;
}

/* ============================================
   Timeline (Level 2)
   ============================================ */
.demo-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.timeline-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.timeline-marker {
    flex-shrink: 0;
    width: 100px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
}

.timeline-content {
    flex: 1;
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.timeline-content h4 {
    margin: 0 0 var(--spacing-xs) 0;
}

.timeline-content p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Live Regions
   ============================================ */
.live-region-demo {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.live-region-display {
    padding: var(--spacing-md);
    background: var(--color-surface);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: background var(--transition-fast);
}

.live-region-display.updated {
    background: rgba(74, 124, 78, 0.2);
}

.live-region-display .placeholder {
    color: var(--color-text-muted);
    font-style: italic;
}

/* ============================================
   Motion Demo (Level 3)
   ============================================ */
.motion-demo {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    margin-bottom: var(--spacing-md);
}

.animated-box {
    width: 150px;
    height: 150px;
    background: var(--color-accent);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

.animated-box span {
    font-size: 3rem;
    margin-bottom: var(--spacing-xs);
}

.animated-box p {
    margin: 0;
    color: var(--color-bg);
    font-weight: 600;
}

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

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

.reduced-motion *,
.reduced-motion *::before,
.reduced-motion *::after {
    animation: none !important;
    transition: none !important;
}

.reduced-motion .demo-card--clickable:hover,
.reduced-motion .demo-card--clickable:focus-visible {
    transform: none;
    box-shadow: 0 0 0 3px var(--color-accent);
}

/* ============================================
   Contrast Examples (Level 3)
   ============================================ */
.contrast-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.contrast-sample {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
}

.contrast-excellent {
    background: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-accent);
}

.contrast-good {
    background: var(--color-bg);
    color: var(--color-text-muted);
    border: 2px solid var(--color-accent);
}

.contrast-minimum {
    background: var(--color-bg);
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.contrast-label {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.contrast-ratio {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ============================================
   Semantic Visualization (Level 4)
   ============================================ */
.semantic-visualization {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.semantic-layer {
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.semantic-layer[data-layer="screen-reader"] {
    border-color: var(--color-accent);
    background: rgba(74, 124, 78, 0.1);
}

.semantic-layer[data-layer="ai"] {
    border-color: var(--color-gold);
    background: rgba(212, 163, 115, 0.1);
}

.semantic-layer strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.semantic-layer code {
    display: block;
    margin-top: var(--spacing-xs);
}

.key-insight {
    padding: var(--spacing-md);
    background: rgba(212, 163, 115, 0.1);
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.key-insight span {
    font-size: 1.5rem;
}

/* ============================================
   Roadmap Preview
   ============================================ */
.roadmap-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.feature-preview {
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.feature-preview[data-status="planned"] {
    border-color: var(--color-gold);
    background: rgba(212, 163, 115, 0.05);
}

.feature-preview h4 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-gold);
}

.feature-preview p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Testing Checklist
   ============================================ */
.checklist-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.checklist-group {
    margin-bottom: var(--spacing-lg);
}

.checklist-group h3 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.interactive-checklist {
    list-style: none;
    padding: 0;
    margin: 0;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.checklist-item:hover {
    background: var(--color-surface-raised);
}

.checklist-item.checked {
    background: rgba(74, 124, 78, 0.1);
}

.checklist-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

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

.hint {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(74, 124, 78, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

/* ============================================
   Footer
   ============================================ */
.demo-footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.demo-footer p {
    margin: var(--spacing-sm) 0;
    text-align: center;
}

.demo-footer a {
    color: var(--color-accent);
    text-decoration: none;
}

.demo-footer a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

.copyright {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Accessibility Overlays (Debug Mode)
   ============================================ */
.show-a11y-overlays [role] {
    position: relative;
    outline: 2px dashed var(--color-gold) !important;
    outline-offset: 2px;
}

.show-a11y-overlays [role]::before {
    content: attr(role);
    position: absolute;
    top: -24px;
    left: 0;
    padding: 2px 6px;
    background: var(--color-gold);
    color: var(--color-bg);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 3px;
    z-index: 1000;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .contrast-examples {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        flex-direction: column;
    }

    .timeline-marker {
        width: auto;
    }
}