/* ====================================================================
   UPDATES & PLANNING PORTAL STYLES
   Hesten's Learning - Release Logs & Implementation Documentation
   Fully respects all themes (Light, Dark, Midnight, Sepia, High Contrast)
   and all accessibility settings (text scaling, fonts, bionic reading,
   focus mode, stop animations, highlight links/headings, reduced motion).
   ==================================================================== */

:root {
    --upd-sidebar-width: 360px;
    --upd-hero-gradient: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(14, 165, 233, 0.08) 50%, rgba(16, 185, 129, 0.05) 100%);
    --upd-card-hover-border: var(--color-primary, #4f46e5);
}

/* ====================================================================
   THEME PALETTES & GRADIENTS
   ==================================================================== */

/* --- Dark Theme --- */
[data-theme="dark"],
.dark {
    --upd-hero-gradient: linear-gradient(135deg, rgba(129, 140, 248, 0.15) 0%, rgba(34, 211, 238, 0.12) 50%, rgba(52, 211, 153, 0.08) 100%);
    --upd-card-hover-border: var(--color-primary, #818cf8);
}

/* --- Midnight Theme --- */
[data-theme="midnight"],
.midnight {
    --upd-hero-gradient: linear-gradient(135deg, rgba(96, 165, 250, 0.16) 0%, rgba(192, 132, 252, 0.14) 50%, rgba(34, 211, 238, 0.08) 100%);
    --upd-card-hover-border: var(--color-primary, #60a5fa);
}

/* --- Sepia Theme --- */
[data-theme="sepia"],
.sepia {
    --upd-hero-gradient: linear-gradient(135deg, rgba(154, 52, 18, 0.09) 0%, rgba(180, 83, 9, 0.08) 50%, rgba(13, 148, 136, 0.06) 100%);
    --upd-card-hover-border: var(--color-primary, #9a3412);
}

/* --- High Contrast Theme --- */
[data-theme="high-contrast"],
.high-contrast {
    --upd-hero-gradient: #000000;
    --upd-card-hover-border: #ffff00;
}

/* ====================================================================
   HERO SECTION
   ==================================================================== */

.upd-hero {
    position: relative;
    background: var(--upd-hero-gradient);
    border-bottom: 1px solid var(--color-border, #e2e8f0);
    padding: 3rem 1.5rem 2.5rem;
    overflow: hidden;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.upd-hero-inner {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.upd-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background: rgba(79, 70, 229, 0.12);
    color: var(--color-primary, #4f46e5);
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    border: 1px solid rgba(79, 70, 229, 0.2);
}

[data-theme="dark"] .upd-hero-badge,
.dark .upd-hero-badge {
    background: rgba(129, 140, 248, 0.2);
    color: #c7d2fe;
    border-color: rgba(129, 140, 248, 0.35);
}

[data-theme="midnight"] .upd-hero-badge,
.midnight .upd-hero-badge {
    background: rgba(96, 165, 250, 0.2);
    color: #bfdbfe;
    border-color: rgba(96, 165, 250, 0.35);
}

[data-theme="sepia"] .upd-hero-badge,
.sepia .upd-hero-badge {
    background: rgba(154, 52, 18, 0.15);
    color: #7c2d12;
    border-color: rgba(154, 52, 18, 0.3);
}

[data-theme="high-contrast"] .upd-hero-badge,
.high-contrast .upd-hero-badge {
    background: #000000;
    color: #ffff00;
    border: 2px solid #ffff00;
    font-weight: 900;
}

.upd-hero-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--color-text-main, #0f172a);
    line-height: 1.2;
    margin: 0 0 0.75rem 0;
    letter-spacing: -0.025em;
}

.upd-hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted, #64748b);
    max-width: 780px;
    line-height: 1.6;
    margin: 0 0 1.5rem 0;
}

.upd-hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border, #e2e8f0);
}

.upd-stat-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.upd-stat-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-lg, 0.75rem);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: var(--color-bg-surface, #ffffff);
    color: var(--color-primary, #4f46e5);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--color-border, #e2e8f0);
}

[data-theme="high-contrast"] .upd-stat-icon,
.high-contrast .upd-stat-icon {
    background: #000000;
    color: #ffff00;
    border: 2px solid #ffffff;
}

.upd-stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted, #64748b);
    font-weight: 600;
}

.upd-stat-val {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-main, #0f172a);
}

/* ====================================================================
   MAIN LAYOUT
   ==================================================================== */

.upd-layout {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    display: grid;
    grid-template-columns: var(--upd-sidebar-width) 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 992px) {
    .upd-layout {
        grid-template-columns: 1fr;
    }
}

/* ====================================================================
   SIDEBAR NAVIGATION
   ==================================================================== */

.upd-sidebar {
    background: var(--color-bg-surface, #ffffff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: var(--radius-xl, 1rem);
    padding: 1.25rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    position: sticky;
    top: 5.5rem;
    max-height: calc(100vh - 7rem);
    display: flex;
    flex-direction: column;
}

[data-theme="high-contrast"] .upd-sidebar,
.high-contrast .upd-sidebar {
    background: #000000;
    border: 2px solid #ffffff;
    box-shadow: none;
}

.upd-search-box {
    position: relative;
    margin-bottom: 1rem;
}

.upd-search-input {
    width: 100%;
    padding: 0.65rem 2.25rem 0.65rem 2.25rem;
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: var(--radius-md, 0.5rem);
    font-size: 0.875rem;
    background: var(--color-bg-base, #f8fafc);
    color: var(--color-text-main, #0f172a);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.upd-search-input:focus {
    outline: none;
    border-color: var(--color-primary, #4f46e5);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    background: var(--color-bg-surface, #ffffff);
}

[data-theme="high-contrast"] .upd-search-input,
.high-contrast .upd-search-input {
    background: #000000;
    color: #ffff00;
    border: 2px solid #ffffff;
}

[data-theme="high-contrast"] .upd-search-input:focus,
.high-contrast .upd-search-input:focus {
    border-color: #ffff00;
    outline: 2px solid #00ffff;
}

.upd-search-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted, #94a3b8);
    font-size: 0.875rem;
    pointer-events: none;
}

.upd-search-clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-muted, #94a3b8);
    cursor: pointer;
    font-size: 0.8125rem;
    display: none;
    padding: 0.25rem;
}

.upd-search-clear:hover {
    color: var(--color-text-main, #0f172a);
}

/* Category Filter Pills */
.upd-filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--color-border, #e2e8f0);
}

.upd-pill-btn {
    background: var(--color-bg-base, #f1f5f9);
    border: 1px solid var(--color-border, #e2e8f0);
    color: var(--color-text-muted, #64748b);
    padding: 0.3rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
    font-family: inherit;
}

.upd-pill-btn:hover {
    background: var(--color-border, #e2e8f0);
    color: var(--color-text-main, #0f172a);
}

.upd-pill-btn.active {
    background: var(--color-primary, #4f46e5);
    color: #ffffff;
    border-color: var(--color-primary, #4f46e5);
}

[data-theme="high-contrast"] .upd-pill-btn,
.high-contrast .upd-pill-btn {
    background: #000000;
    color: #ffffff;
    border: 1px solid #ffffff;
}

[data-theme="high-contrast"] .upd-pill-btn.active,
.high-contrast .upd-pill-btn.active {
    background: #ffff00;
    color: #000000;
    border-color: #ffff00;
    font-weight: 800;
    outline: 2px solid #00ffff;
}

/* Document Cards in Sidebar */
.upd-doc-list {
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    padding-right: 0.25rem;
}

.upd-card-item {
    background: var(--color-bg-base, #f8fafc);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: var(--radius-lg, 0.75rem);
    padding: 0.875rem 1rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    display: block;
    width: 100%;
}

.upd-card-item:hover {
    border-color: var(--upd-card-hover-border);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.upd-card-item:focus-visible {
    outline: 3px solid var(--color-primary, #4f46e5);
    outline-offset: 2px;
}

.upd-card-item.active {
    background: rgba(79, 70, 229, 0.06);
    border-color: var(--color-primary, #4f46e5);
    box-shadow: 0 0 0 1px var(--color-primary, #4f46e5);
}

[data-theme="dark"] .upd-card-item.active,
.dark .upd-card-item.active {
    background: rgba(129, 140, 248, 0.12);
    border-color: var(--color-primary, #818cf8);
}

[data-theme="midnight"] .upd-card-item.active,
.midnight .upd-card-item.active {
    background: rgba(96, 165, 250, 0.12);
    border-color: var(--color-primary, #60a5fa);
}

[data-theme="sepia"] .upd-card-item.active,
.sepia .upd-card-item.active {
    background: rgba(154, 52, 18, 0.1);
    border-color: var(--color-primary, #9a3412);
}

[data-theme="high-contrast"] .upd-card-item,
.high-contrast .upd-card-item {
    background: #000000;
    border: 2px solid #ffffff;
    box-shadow: none;
}

[data-theme="high-contrast"] .upd-card-item.active,
.high-contrast .upd-card-item.active {
    border: 3px solid #ffff00;
    outline: 2px solid #00ffff;
    background: #000000;
}

.upd-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.35rem;
}

/* Category Badges Across Themes */
.upd-badge-category {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    border: 1px solid transparent;
}

.cat-walkthrough { background: rgba(16, 185, 129, 0.15); color: #059669; }
.cat-plan { background: rgba(79, 70, 229, 0.15); color: #4f46e5; }
.cat-bugfix { background: rgba(244, 63, 94, 0.15); color: #e11d48; }
.cat-architecture { background: rgba(245, 158, 11, 0.15); color: #d97706; }
.cat-default { background: rgba(100, 116, 139, 0.15); color: #475569; }

[data-theme="dark"] .cat-walkthrough, .dark .cat-walkthrough { color: #34d399; }
[data-theme="dark"] .cat-plan, .dark .cat-plan { color: #a5b4fc; }
[data-theme="dark"] .cat-bugfix, .dark .cat-bugfix { color: #fb7185; }
[data-theme="dark"] .cat-architecture, .dark .cat-architecture { color: #fbbf24; }
[data-theme="dark"] .cat-default, .dark .cat-default { color: #cbd5e1; }

[data-theme="midnight"] .cat-walkthrough, .midnight .cat-walkthrough { color: #34d399; }
[data-theme="midnight"] .cat-plan, .midnight .cat-plan { color: #93c5fd; }
[data-theme="midnight"] .cat-bugfix, .midnight .cat-bugfix { color: #f472b6; }
[data-theme="midnight"] .cat-architecture, .midnight .cat-architecture { color: #fde047; }
[data-theme="midnight"] .cat-default, .midnight .cat-default { color: #94a3b8; }

[data-theme="sepia"] .cat-walkthrough, .sepia .cat-walkthrough { color: #0f766e; }
[data-theme="sepia"] .cat-plan, .sepia .cat-plan { color: #9a3412; }
[data-theme="sepia"] .cat-bugfix, .sepia .cat-bugfix { color: #991b1b; }
[data-theme="sepia"] .cat-architecture, .sepia .cat-architecture { color: #b45309; }
[data-theme="sepia"] .cat-default, .sepia .cat-default { color: #5c4e4e; }

[data-theme="high-contrast"] .upd-badge-category,
.high-contrast .upd-badge-category {
    background: #000000 !important;
    color: #ffff00 !important;
    border: 1px solid #ffff00 !important;
    font-weight: 800;
}

.upd-card-date {
    font-size: 0.75rem;
    color: var(--color-text-muted, #94a3b8);
    font-weight: 500;
}

.upd-card-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text-main, #0f172a);
    line-height: 1.35;
    margin: 0 0 0.35rem 0;
}

[data-theme="high-contrast"] .upd-card-title,
.high-contrast .upd-card-title {
    color: #ffff00 !important;
}

.upd-card-desc {
    font-size: 0.8125rem;
    color: var(--color-text-muted, #64748b);
    line-height: 1.45;
    margin: 0 0 0.5rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

[data-theme="high-contrast"] .upd-card-desc,
.high-contrast .upd-card-desc {
    color: #ffffff !important;
}

.upd-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.6875rem;
    color: var(--color-text-muted, #94a3b8);
}

.upd-card-tags {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.upd-card-tag {
    background: var(--color-bg-surface, #ffffff);
    border: 1px solid var(--color-border, #e2e8f0);
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    font-size: 0.6875rem;
}

[data-theme="high-contrast"] .upd-card-tag,
.high-contrast .upd-card-tag {
    background: #000000;
    color: #ffffff;
    border: 1px solid #ffffff;
}

/* ====================================================================
   VIEWER AREA (RIGHT COLUMN)
   ==================================================================== */

.upd-viewer {
    background: var(--color-bg-surface, #ffffff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: var(--radius-xl, 1rem);
    padding: 2.25rem 2.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    min-height: 600px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

@media (max-width: 768px) {
    .upd-viewer {
        padding: 1.5rem 1.25rem;
    }
}

[data-theme="high-contrast"] .upd-viewer,
.high-contrast .upd-viewer {
    background: #000000;
    border: 2px solid #ffffff;
    box-shadow: none;
}

.upd-viewer-header {
    border-bottom: 1px solid var(--color-border, #e2e8f0);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.upd-viewer-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.upd-viewer-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted, #64748b);
}

[data-theme="high-contrast"] .upd-viewer-meta,
.high-contrast .upd-viewer-meta {
    color: #ffffff;
}

.upd-viewer-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.upd-btn-action {
    background: var(--color-bg-base, #f1f5f9);
    border: 1px solid var(--color-border, #e2e8f0);
    color: var(--color-text-main, #0f172a);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-md, 0.5rem);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.18s ease;
    text-decoration: none;
    font-family: inherit;
}

.upd-btn-action:hover {
    background: var(--color-border, #e2e8f0);
    color: var(--color-primary, #4f46e5);
}

.upd-btn-action:focus-visible {
    outline: 2px solid var(--color-primary, #4f46e5);
    outline-offset: 2px;
}

[data-theme="high-contrast"] .upd-btn-action,
.high-contrast .upd-btn-action {
    background: #000000;
    color: #ffff00;
    border: 1px solid #ffffff;
}

[data-theme="high-contrast"] .upd-btn-action:hover,
[data-theme="high-contrast"] .upd-btn-action:focus-visible,
.high-contrast .upd-btn-action:hover,
.high-contrast .upd-btn-action:focus-visible {
    background: #ffff00;
    color: #000000;
    border-color: #ffff00;
}

.upd-viewer-title {
    font-size: clamp(1.65rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--color-text-main, #0f172a);
    line-height: 1.25;
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
}

[data-theme="high-contrast"] .upd-viewer-title,
.high-contrast .upd-viewer-title {
    color: #ffff00;
}

.upd-viewer-summary {
    font-size: 1.0625rem;
    color: var(--color-text-muted, #64748b);
    line-height: 1.6;
    margin: 0;
}

[data-theme="high-contrast"] .upd-viewer-summary,
.high-contrast .upd-viewer-summary {
    color: #ffffff;
}

/* Clickable Document Tags */
.upd-viewer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.75rem;
}

.upd-viewer-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary, #4f46e5);
    background: color-mix(in srgb, var(--color-primary, #4f46e5) 10%, transparent);
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    border: 1px solid color-mix(in srgb, var(--color-primary, #4f46e5) 25%, transparent);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
}

.upd-viewer-tag:hover {
    background: var(--color-primary, #4f46e5);
    color: #ffffff;
    transform: translateY(-1px);
}

/* Dynamic Table of Contents (TOC) */
.upd-toc-container {
    margin-top: 1.25rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-base, #f8fafc);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: var(--radius-lg, 0.75rem);
}

.upd-toc-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted, #64748b);
    margin-bottom: 0.75rem;
}

.upd-toc-header i {
    color: var(--color-primary, #4f46e5);
}

.upd-toc-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.upd-toc-item {
    font-size: 0.875rem;
    color: var(--color-text-main, #334155);
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    transition: all 0.15s ease;
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.upd-toc-item.level-3 {
    padding-left: 1.25rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted, #64748b);
}

.upd-toc-item:hover {
    background: color-mix(in srgb, var(--color-primary, #4f46e5) 12%, transparent);
    color: var(--color-primary, #4f46e5);
    padding-left: 0.75rem;
}

.upd-toc-item.level-3:hover {
    padding-left: 1.5rem;
}

/* High Contrast mode for TOC & Tags */
[data-theme="high-contrast"] .upd-viewer-tag,
.high-contrast .upd-viewer-tag {
    background: #000000 !important;
    color: #ffff00 !important;
    border: 1px solid #ffff00 !important;
}
[data-theme="high-contrast"] .upd-toc-container,
.high-contrast .upd-toc-container {
    background: #000000 !important;
    border: 2px solid #ffffff !important;
}
[data-theme="high-contrast"] .upd-toc-header,
[data-theme="high-contrast"] .upd-toc-item,
.high-contrast .upd-toc-header,
.high-contrast .upd-toc-item {
    color: #ffffff !important;
}
[data-theme="high-contrast"] .upd-toc-item:hover,
.high-contrast .upd-toc-item:hover {
    background: #ffff00 !important;
    color: #000000 !important;
}


/* ====================================================================
   MARKDOWN RENDERED CONTENT BODY (Respecting A11y & Themes)
   ==================================================================== */

.upd-content {
    font-size: calc(1rem * var(--site-font-size, 1));
    line-height: var(--site-line-height, 1.75);
    letter-spacing: var(--site-letter-spacing, normal);
    word-spacing: var(--site-word-spacing, normal);
    text-align: var(--site-text-align, left);
    color: var(--color-text-main, #0f172a);
    font-family: inherit;
}

[data-theme="high-contrast"] .upd-content,
.high-contrast .upd-content {
    color: #ffffff !important;
}

.upd-content h1,
.upd-content h2,
.upd-content h3,
.upd-content h4 {
    color: var(--color-text-main, #0f172a);
    font-weight: 800;
    line-height: 1.3;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.015em;
    font-family: inherit;
}

[data-theme="high-contrast"] .upd-content h1,
[data-theme="high-contrast"] .upd-content h2,
[data-theme="high-contrast"] .upd-content h3,
[data-theme="high-contrast"] .upd-content h4,
.high-contrast .upd-content h1,
.high-contrast .upd-content h2,
.high-contrast .upd-content h3,
.high-contrast .upd-content h4 {
    color: #ffff00 !important;
    border-bottom-color: #ffffff !important;
}

.upd-content h1 { font-size: 1.75rem; border-bottom: 2px solid var(--color-border, #e2e8f0); padding-bottom: 0.5rem; }
.upd-content h2 { font-size: 1.375rem; border-bottom: 1px solid var(--color-border, #e2e8f0); padding-bottom: 0.35rem; }
.upd-content h3 { font-size: 1.15rem; }
.upd-content h4 { font-size: 1rem; }

.upd-content p {
    margin-top: 0;
    margin-bottom: 1.25rem;
}

.upd-content ul,
.upd-content ol {
    margin-top: 0;
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.upd-content li {
    margin-bottom: 0.5rem;
}

.upd-content hr {
    border: 0;
    border-top: 1px solid var(--color-border, #e2e8f0);
    margin: 2.25rem 0;
}

.upd-content a {
    color: var(--color-primary, #4f46e5);
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 600;
}

[data-theme="high-contrast"] .upd-content a,
.high-contrast .upd-content a {
    color: #ffff00 !important;
    text-decoration: underline !important;
    font-weight: 800 !important;
}

.upd-content a:hover {
    color: var(--color-primary-hover, #4338ca);
}

.upd-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    border-left: 4px solid var(--color-primary, #4f46e5);
    background: var(--color-bg-base, #f8fafc);
    border-radius: 0 var(--radius-lg, 0.75rem) var(--radius-lg, 0.75rem) 0;
    color: var(--color-text-muted, #475569);
    font-style: italic;
}

[data-theme="high-contrast"] .upd-content blockquote,
.high-contrast .upd-content blockquote {
    background: #000000;
    border-left: 4px solid #ffff00;
    color: #ffffff;
}

/* Callout Alerts */
.upd-alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg, 0.75rem);
    margin: 1.5rem 0;
    border-left: 4px solid;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.upd-alert-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.4rem;
}

.upd-alert-note { background: rgba(79, 70, 229, 0.08); border-color: #4f46e5; color: var(--color-text-main, #0f172a); }
.upd-alert-note .upd-alert-title { color: #4f46e5; }

.upd-alert-tip { background: rgba(16, 185, 129, 0.08); border-color: #10b981; color: var(--color-text-main, #0f172a); }
.upd-alert-tip .upd-alert-title { color: #059669; }

.upd-alert-important { background: rgba(139, 92, 246, 0.08); border-color: #8b5cf6; color: var(--color-text-main, #0f172a); }
.upd-alert-important .upd-alert-title { color: #7c3aed; }

.upd-alert-warning { background: rgba(245, 158, 11, 0.08); border-color: #f59e0b; color: var(--color-text-main, #0f172a); }
.upd-alert-warning .upd-alert-title { color: #d97706; }

.upd-alert-caution { background: rgba(244, 63, 94, 0.08); border-color: #f43f5e; color: var(--color-text-main, #0f172a); }
.upd-alert-caution .upd-alert-title { color: #e11d48; }

[data-theme="dark"] .upd-alert-note, .dark .upd-alert-note { background: rgba(129, 140, 248, 0.15); border-color: #818cf8; }
[data-theme="dark"] .upd-alert-note .upd-alert-title, .dark .upd-alert-note .upd-alert-title { color: #a5b4fc; }

[data-theme="midnight"] .upd-alert-note, .midnight .upd-alert-note { background: rgba(96, 165, 250, 0.15); border-color: #60a5fa; }
[data-theme="midnight"] .upd-alert-note .upd-alert-title, .midnight .upd-alert-note .upd-alert-title { color: #93c5fd; }

[data-theme="sepia"] .upd-alert-note, .sepia .upd-alert-note { background: rgba(154, 52, 18, 0.1); border-color: #9a3412; }
[data-theme="sepia"] .upd-alert-note .upd-alert-title, .sepia .upd-alert-note .upd-alert-title { color: #9a3412; }

[data-theme="high-contrast"] .upd-alert,
.high-contrast .upd-alert {
    background: #000000 !important;
    border: 2px solid #ffff00 !important;
    border-left: 6px solid #ffff00 !important;
    color: #ffffff !important;
}

[data-theme="high-contrast"] .upd-alert-title,
.high-contrast .upd-alert-title {
    color: #ffff00 !important;
}

/* Inline Code & Code Blocks */
.upd-content code:not(pre code) {
    background: rgba(79, 70, 229, 0.08);
    color: var(--color-primary, #4f46e5);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

[data-theme="dark"] .upd-content code:not(pre code),
.dark .upd-content code:not(pre code) {
    background: rgba(129, 140, 248, 0.18);
    color: #c7d2fe;
}

[data-theme="midnight"] .upd-content code:not(pre code),
.midnight .upd-content code:not(pre code) {
    background: rgba(96, 165, 250, 0.18);
    color: #bfdbfe;
}

[data-theme="sepia"] .upd-content code:not(pre code),
.sepia .upd-content code:not(pre code) {
    background: rgba(154, 52, 18, 0.14);
    color: #7c2d12;
}

[data-theme="high-contrast"] .upd-content code:not(pre code),
.high-contrast .upd-content code:not(pre code) {
    background: #000000 !important;
    color: #ffff00 !important;
    border: 1px solid #ffff00 !important;
}

.upd-code-block-wrap {
    position: relative;
    margin: 1.5rem 0;
    border-radius: var(--radius-lg, 0.75rem);
    overflow: hidden;
    border: 1px solid var(--color-border, #e2e8f0);
}

.upd-code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #1e293b;
    padding: 0.5rem 1rem;
    color: #94a3b8;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-theme="dark"] .upd-code-header, .dark .upd-code-header { background: #151c2c; border-bottom: 1px solid #1e293b; }
[data-theme="midnight"] .upd-code-header, .midnight .upd-code-header { background: #0f1524; border-bottom: 1px solid #162033; }
[data-theme="sepia"] .upd-code-header, .sepia .upd-code-header { background: #372f2f; color: #e6dcce; border-bottom: 1px solid #5c4e4e; }

[data-theme="high-contrast"] .upd-code-block-wrap,
.high-contrast .upd-code-block-wrap {
    border: 2px solid #ffffff !important;
}

[data-theme="high-contrast"] .upd-code-header,
.high-contrast .upd-code-header {
    background: #000000 !important;
    color: #ffff00 !important;
    border-bottom: 1px solid #ffffff !important;
}

.upd-copy-code-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #f8fafc;
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    font-size: 0.6875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.upd-copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.upd-content pre {
    margin: 0;
    padding: 1.25rem;
    background: #0f172a;
    color: #f8fafc;
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.6;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

[data-theme="dark"] .upd-content pre, .dark .upd-content pre { background: #0b0f19; color: #f8fafc; }
[data-theme="midnight"] .upd-content pre, .midnight .upd-content pre { background: #080b11; color: #e2e8f0; }
[data-theme="sepia"] .upd-content pre, .sepia .upd-content pre { background: #2d2424; color: #fdfbf7; }

[data-theme="high-contrast"] .upd-content pre,
.high-contrast .upd-content pre {
    background: #000000 !important;
    color: #ffffff !important;
}

/* Diff Line Gutters */
.diff-add {
    background: rgba(16, 185, 129, 0.18);
    color: #6ee7b7;
    display: block;
    margin: 0 -1.25rem;
    padding: 0 1.25rem;
}

.diff-del {
    background: rgba(244, 63, 94, 0.18);
    color: #fda4af;
    display: block;
    margin: 0 -1.25rem;
    padding: 0 1.25rem;
}

[data-theme="high-contrast"] .diff-add, .high-contrast .diff-add {
    background: #003300 !important;
    color: #00ff00 !important;
    border-left: 3px solid #00ff00;
}

[data-theme="high-contrast"] .diff-del, .high-contrast .diff-del {
    background: #330000 !important;
    color: #ff6666 !important;
    border-left: 3px solid #ff3333;
}

/* Tables */
.upd-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9375rem;
}

.upd-content th,
.upd-content td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border, #e2e8f0);
    text-align: left;
}

.upd-content th {
    background: var(--color-bg-base, #f8fafc);
    font-weight: 700;
    color: var(--color-text-main, #0f172a);
}

[data-theme="high-contrast"] .upd-content table,
[data-theme="high-contrast"] .upd-content th,
[data-theme="high-contrast"] .upd-content td,
.high-contrast .upd-content table,
.high-contrast .upd-content th,
.high-contrast .upd-content td {
    border: 2px solid #ffffff !important;
    color: #ffffff !important;
    background: #000000 !important;
}

[data-theme="high-contrast"] .upd-content th,
.high-contrast .upd-content th {
    color: #ffff00 !important;
}

/* ====================================================================
   ACCESSIBILITY TOGGLE MODES (from global-a11y.js)
   ==================================================================== */

/* 1. Focus Mode */
body.focus-mode .upd-hero {
    display: none !important;
}

body.focus-mode .upd-layout {
    padding-top: 1rem;
}

/* 2. Stop Animations */
body.stop-animations * {
    transition: none !important;
    transform: none !important;
    animation: none !important;
}

@media (prefers-reduced-motion: reduce) {
    .upd-card-item,
    .upd-pill-btn,
    .upd-btn-action,
    .upd-toast,
    .upd-hero {
        transition: none !important;
        transform: none !important;
        animation: none !important;
    }
}

/* 3. Highlight Links */
body.highlight-links .upd-content a {
    background: #ffff00 !important;
    color: #000000 !important;
    padding: 0.1rem 0.35rem !important;
    border-radius: 3px !important;
    outline: 2px solid #000000 !important;
    text-decoration: underline !important;
    font-weight: 800 !important;
}

/* 4. Highlight Headings */
body.highlight-headings .upd-content h1,
body.highlight-headings .upd-content h2,
body.highlight-headings .upd-content h3,
body.highlight-headings .upd-content h4 {
    background: rgba(79, 70, 229, 0.12) !important;
    border-left: 5px solid var(--color-primary, #4f46e5) !important;
    padding-left: 0.75rem !important;
    padding-top: 0.25rem !important;
    padding-bottom: 0.25rem !important;
    border-radius: 0 var(--radius-md) var(--radius-md) 0 !important;
}

/* 5. Hide Images */
body.hide-images .upd-content img {
    display: none !important;
}

/* 6. High Contrast Focus outlines across the board */
[data-theme="high-contrast"] *:focus-visible,
.high-contrast *:focus-visible {
    outline: 3px solid #00ffff !important;
    outline-offset: 2px !important;
}

/* Empty State */
.upd-empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--color-text-muted, #64748b);
}

.upd-empty-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Toast */
.upd-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #0f172a;
    color: #ffffff;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md, 0.5rem);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 10000;
    opacity: 0;
    transform: translateY(15px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}

.upd-toast.show {
    opacity: 1;
    transform: translateY(0);
}

[data-theme="high-contrast"] .upd-toast,
.high-contrast .upd-toast {
    background: #000000;
    color: #ffff00;
    border: 2px solid #ffffff;
}

/* Companion Document Box */
.upd-companion-card {
    background: color-mix(in srgb, var(--color-primary) 8%, transparent);
    border: 1.5px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
    border-radius: var(--radius-lg, 0.75rem);
    padding: 1rem 1.25rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    transition: all 0.2s ease;
}

.upd-companion-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-primary) 15%, transparent);
}

.upd-companion-info {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.upd-companion-icon {
    font-size: 1.25rem;
    color: var(--color-primary);
}

/* Search Term Highlighting */
.upd-card-item mark {
    background: #fde047;
    color: #000000;
    border-radius: 3px;
    padding: 0.05rem 0.25rem;
    font-weight: 700;
}

[data-theme="high-contrast"] .upd-companion-card,
.high-contrast .upd-companion-card {
    background: #000000 !important;
    border: 2px solid #ffffff !important;
}

[data-theme="high-contrast"] .upd-companion-icon,
.high-contrast .upd-companion-icon {
    color: #ffff00 !important;
}

[data-theme="high-contrast"] .upd-card-item mark,
.high-contrast .upd-card-item mark {
    background: #ffff00 !important;
    color: #000000 !important;
}