/**
 * Design System Documentation - Page-Specific Styles
 * Built entirely on top of academia-design-system.css tokens
 */

/* ========================================
   STANDALONE BODY (no sidebar)
   ======================================== */

.ds-standalone {
    min-height: 100vh;
    font-family: var(--font-family-ui);
    color: var(--color-text);
}

.ds-standalone .main-content {
    margin: 0 !important;
    width: 100%;
}

.ds-standalone .docs-layout {
    max-width: 1400px;
    margin: 0 auto;
}

/* ========================================
   DOCS LAYOUT
   ======================================== */

.docs-layout {
    display: flex;
    gap: var(--space-lg);
}

.docs-sidebar {
    position: sticky;
    top: var(--space-lg);
    width: 220px;
    flex-shrink: 0;
    max-height: calc(100vh - var(--header-height) - var(--space-2xl));
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-glass-border) transparent;
}

.docs-sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.docs-sidebar-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: all var(--transition-base);
}

.docs-sidebar-nav a:hover {
    background: var(--color-glass-hover);
    color: var(--color-text);
}

.docs-sidebar-nav a.active {
    background: linear-gradient(135deg, var(--color-primary-glow) 0%, transparent 100%);
    color: var(--color-primary);
    font-weight: 600;
}

.docs-sidebar-nav a i {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.docs-sidebar-section {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-dim);
    padding: var(--space-md) 14px var(--space-xs);
    font-weight: 700;
}

.docs-content {
    flex: 1;
    min-width: 0;
}

/* ========================================
   SECTION STRUCTURE
   ======================================== */

.docs-section {
    margin-bottom: var(--space-3xl);
    scroll-margin-top: var(--space-xl);
}

.docs-section-header {
    margin-bottom: var(--space-xl);
}

.docs-section-header h2 {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.docs-section-header h2 i {
    color: var(--color-primary);
    font-size: 1.5rem;
}

.docs-section-header p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.section-divider {
    height: 1px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-glass-border), transparent);
    margin: var(--space-xl) 0;
}

/* ========================================
   TOKEN DISPLAY
   ======================================== */

.token-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-md);
}

.token-card {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

.token-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.color-swatch {
    width: 100%;
    height: 56px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    border: 1px solid var(--color-glass-border);
}

.token-name {
    font-family: 'Inter', monospace;
    font-size: 0.75rem;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    word-break: break-all;
}

.token-value {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ========================================
   COMPONENT SHOWCASE
   ======================================== */

.component-showcase {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.showcase-preview {
    padding: var(--space-xl);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.showcase-code {
    background: var(--color-surface);
    border-top: 1px solid var(--color-glass-border);
    padding: var(--space-md) var(--space-lg);
    font-family: 'Inter', 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    overflow-x: auto;
    white-space: pre;
    line-height: 1.6;
}

.showcase-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

/* ========================================
   SPACING DISPLAY
   ======================================== */

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

.spacing-item {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.spacing-bar {
    height: 24px;
    background: linear-gradient(135deg, var(--color-primary-glow), var(--color-primary));
    border-radius: 4px;
    min-width: 4px;
    transition: width var(--transition-base);
}

.spacing-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-width: 180px;
}

.spacing-meta .token-name {
    margin-bottom: 0;
}

/* ========================================
   RADIUS DISPLAY
   ======================================== */

.radius-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    align-items: end;
}

.radius-item {
    text-align: center;
}

.radius-preview {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-primary-glow), rgba(45, 184, 76, 0.15));
    border: 2px solid var(--color-primary);
    margin: 0 auto var(--space-sm);
}

/* ========================================
   SHADOW DISPLAY
   ======================================== */

.shadow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.shadow-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* ========================================
   TYPOGRAPHY DISPLAY
   ======================================== */

.type-specimen {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-md);
}

.type-specimen-text {
    flex: 1;
}

.type-specimen-meta {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    white-space: nowrap;
}

/* ── Font Family Cards ── */

.font-families-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.font-family-card {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.font-family-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.font-family-card.reading-card {
    border-color: rgba(245, 166, 35, 0.2);
}

.font-family-card.reading-card:hover {
    border-color: var(--color-accent-gold);
}

.font-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.font-card-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.font-card-badge.ui-badge {
    background: linear-gradient(135deg, var(--color-primary-glow), rgba(45, 184, 76, 0.08));
    color: var(--color-primary);
    border: 1px solid rgba(45, 184, 76, 0.2);
}

.font-card-badge.reading-badge {
    background: linear-gradient(135deg, rgba(245, 166, 35, 0.2), rgba(245, 166, 35, 0.05));
    color: var(--color-accent-gold);
    border: 1px solid rgba(245, 166, 35, 0.2);
}

.font-card-lang {
    font-size: 0.72rem;
    color: var(--color-text-dim);
    font-weight: 500;
}

.font-card-name {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.font-card-specimen {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.font-specimen-large {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

.font-specimen-body {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.font-card-weights {
    font-size: 0.72rem;
    color: var(--color-text-dim);
    letter-spacing: 0.08em;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-glass-border);
}

/* ── Usage Rules ── */

.usage-rules-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.usage-rule-card {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    gap: var(--space-lg);
    transition: all var(--transition-base);
}

.usage-rule-card:hover {
    border-color: var(--color-glass-hover);
    transform: translateY(-1px);
}

.usage-rule-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.usage-rule-content h4 {
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.usage-rule-content h4 code {
    font-size: 0.72rem;
    color: var(--color-text-dim);
    background: var(--color-surface);
    padding: 2px 6px;
    border-radius: 4px;
    margin-inline-start: var(--space-xs);
}

.usage-rule-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.usage-rule-content li {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    padding-inline-start: var(--space-md);
    position: relative;
}

.usage-rule-content li::before {
    content: '·';
    position: absolute;
    inset-inline-start: 4px;
    color: var(--color-text-dim);
    font-weight: 700;
}

/* ── Font Comparison Blocks ── */

.font-compare-block {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-glass-border);
}

.font-compare-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

/* ========================================
   THEME TOGGLE DISPLAY
   ======================================== */

.theme-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.theme-card {
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.theme-card.dark {
    background: #0A0A0F;
    color: #FFFFFF;
}

.theme-card.light {
    background: #F5F7FA;
    color: #1A1A2E;
    border-color: rgba(0, 0, 0, 0.1);
}

.theme-card h4 {
    margin-bottom: var(--space-sm);
}

/* ========================================
   VERSION BADGE
   ======================================== */

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--color-primary-glow), transparent);
    border: 1px solid var(--color-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ========================================
   ACCESSIBILITY SECTION
   ======================================== */

.a11y-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-md);
}

.a11y-card {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.a11y-card h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
}

.a11y-card h4 i {
    color: var(--color-primary);
}

.a11y-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .docs-sidebar {
        display: none;
    }

    .token-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 768px) {
    .theme-compare {
        grid-template-columns: 1fr;
    }

    .type-specimen {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .spacing-item {
        flex-direction: column;
        align-items: stretch;
    }

    .font-families-grid,
    .usage-rules-grid {
        grid-template-columns: 1fr;
    }
}