/* ==========================================================================
   Skoolyst Documentation — Core Stylesheet
   Brand: Dark navy, cyan accents, subtle gold/amber, clean minimal
   ========================================================================== */

:root {
  /* Brand palette */
  --navy-900: #0a1628;
  --navy-800: #0f2540;
  --navy-700: #16314f;
  --navy-600: #1d3d63;
  --navy-500: #2a4f7a;
  --navy-400: #3d6a96;
  --navy-300: #6b91b8;
  --navy-200: #a3bfd8;
  --navy-100: #d4e2f0;
  --navy-50: #eef4fa;

  --cyan-600: #0891b2;
  --cyan-500: #06b6d4;
  --cyan-400: #22d3ee;
  --cyan-300: #67e8f9;
  --cyan-200: #a5f3fc;
  --cyan-100: #cffafe;
  --cyan-50: #ecfeff;

  --gold-500: #f59e0b;
  --gold-400: #fbbf24;
  --gold-300: #fcd34d;
  --gold-200: #fde68a;
  --gold-100: #fef3c7;
  --gold-50: #fffbeb;

  /* Status colors */
  --success: #10b981;
  --success-bg: #d1fae5;
  --warning: #f59e0b;
  --warning-bg: #fef3c7;
  --info: #06b6d4;
  --info-bg: #cffafe;
  --danger: #ef4444;
  --danger-bg: #fee2e2;
  --neutral: #64748b;
  --neutral-bg: #f1f5f9;

  /* Neutrals */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Semantic tokens */
  --bg-body: var(--white);
  --bg-subtle: var(--gray-50);
  --bg-sidebar: var(--gray-50);
  --bg-card: var(--white);
  --text-primary: var(--navy-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --text-on-dark: var(--white);
  --border-color: var(--gray-200);
  --border-color-strong: var(--gray-300);
  --link-color: var(--cyan-600);
  --link-hover: var(--cyan-500);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing scale (8px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;

  /* Layout */
  --header-height: 64px;
  --sidebar-width: 280px;
  --toc-width: 240px;
  --content-max: 820px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.05);
  --shadow-md: 0 4px 12px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 8px 24px rgba(10, 22, 40, 0.12);
  --shadow-xl: 0 16px 48px rgba(10, 22, 40, 0.16);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--navy-900);
  margin-top: 0;
}

h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
h2 { font-size: 1.625rem; letter-spacing: -0.01em; margin-top: var(--space-8); }
h3 { font-size: 1.25rem; margin-top: var(--space-6); }
h4 { font-size: 1.0625rem; margin-top: var(--space-5); }

p { margin-top: 0; margin-bottom: var(--space-4); }

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--link-hover); }

img { max-width: 100%; height: auto; }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

code {
  background: var(--navy-50);
  color: var(--navy-700);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}

pre {
  background: var(--navy-900);
  color: #e2e8f0;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  overflow-x: auto;
  line-height: 1.6;
  margin: var(--space-5) 0;
}
pre code {
  background: none;
  border: none;
  color: inherit;
  padding: 0;
  font-size: 0.875rem;
}

/* ==========================================================================
   Header / Top Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--navy-900);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1030;
  display: flex;
  align-items: center;
}

.site-header .header-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  height: 100%;
}

.site-header .logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--white);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.site-header .logo-link:hover { color: var(--white); }

.site-header .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--cyan-500), var(--cyan-400));
  border-radius: var(--radius-md);
  color: var(--navy-900);
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.site-header .logo-text { color: var(--white); }
.site-header .logo-text .docs-label {
  color: var(--cyan-400);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  line-height: 1;
  margin-top: 2px;
}

.site-header .header-nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}
.site-header .header-nav .nav-link {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.site-header .header-nav .nav-link:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
}
.site-header .header-nav .nav-link.active {
  color: var(--cyan-400);
}

.site-header .header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header .search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  min-width: 200px;
}
.site-header .search-trigger:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}
.site-header .search-trigger .search-placeholder { flex: 1; text-align: left; }
.site-header .search-trigger kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.5);
}

.site-header .mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: var(--white);
  cursor: pointer;
}
.site-header .mobile-toggle:hover { background: rgba(255, 255, 255, 0.06); }

/* Version selector */
.version-selector {
  display: none;
  align-items: center;
  gap: var(--space-2);
}
.version-selector .version-label {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8125rem;
}
.version-selector select {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.5rem;
  font-size: 0.8125rem;
  font-family: inherit;
  cursor: pointer;
}
.version-selector select:hover { border-color: rgba(255, 255, 255, 0.2); }

@media (min-width: 1200px) {
  .site-header .header-nav { display: flex; gap: var(--space-1); }
  .site-header .version-selector { display: flex; }
  .site-header .mobile-toggle { display: none; }
}

@media (min-width: 1200px) and (max-width: 1399.98px) {
  .site-header .header-nav .nav-link {
    padding: var(--space-2) var(--space-2);
    font-size: 0.8125rem;
  }
  .site-header .header-nav { gap: 0; }
  .site-header .search-trigger { min-width: 160px; }
  .site-header .version-selector .version-label { display: none; }
}

@media (max-width: 991.98px) {
  .site-header .search-trigger { min-width: auto; }
  .site-header .search-trigger .search-placeholder { display: none; }
  .site-header .search-trigger { padding: 0.5rem 0.625rem; }
}

/* ==========================================================================
   Search Modal
   ========================================================================== */

.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}
.search-modal.open { display: flex; }

.search-modal .search-panel {
  width: 90%;
  max-width: 600px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}
.search-modal .search-input-wrap {
  display: flex;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-color);
  gap: var(--space-3);
}
.search-modal .search-input-wrap svg {
  color: var(--gray-400);
  flex-shrink: 0;
}
.search-modal .search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1.0625rem;
  font-family: inherit;
  color: var(--text-primary);
  background: none;
}
.search-modal .search-input::placeholder { color: var(--gray-400); }
.search-modal .search-close {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0;
}
.search-modal .search-close:hover { color: var(--gray-700); }

.search-modal .search-results {
  max-height: 50vh;
  overflow-y: auto;
  padding: var(--space-2);
}
.search-modal .search-result-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: background var(--transition-fast);
}
.search-modal .search-result-item:hover,
.search-modal .search-result-item.highlighted {
  background: var(--cyan-50);
}
.search-modal .search-result-item .result-title {
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 2px;
}
.search-modal .search-result-item .result-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.search-modal .search-empty {
  padding: var(--space-6) var(--space-4);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ==========================================================================
   Layout — Sidebar + Content + TOC
   ========================================================================== */

.doc-layout {
  display: flex;
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* Sidebar */
.doc-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  overflow-y: auto;
  padding: var(--space-5) var(--space-4);
  z-index: 1020;
  transition: transform var(--transition-base);
}

.doc-sidebar .sidebar-section { margin-bottom: var(--space-6); }
.doc-sidebar .sidebar-heading {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  padding: 0 var(--space-3);
  margin-bottom: var(--space-2);
}
.doc-sidebar .sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}
.doc-sidebar .sidebar-nav li { margin: 0; }
.doc-sidebar .sidebar-nav a {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.doc-sidebar .sidebar-nav a:hover {
  background: var(--gray-200);
  color: var(--navy-900);
}
.doc-sidebar .sidebar-nav a.active {
  background: var(--cyan-50);
  color: var(--cyan-600);
  font-weight: 600;
}

/* Mobile sidebar overlay */
.sidebar-backdrop {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.4);
  z-index: 1015;
}
.sidebar-backdrop.show { display: block; }

@media (max-width: 991.98px) {
  .doc-sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  .doc-sidebar.show { transform: translateX(0); }
}

/* Content area */
.doc-content-wrapper {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-width);
  display: flex;
  justify-content: center;
}

.doc-content {
  max-width: var(--content-max);
  width: 100%;
  padding: var(--space-6) var(--space-6) var(--space-9);
}

@media (max-width: 991.98px) {
  .doc-content-wrapper { margin-left: 0; }
  .doc-content { padding: var(--space-5) var(--space-4) var(--space-8); max-width: 100%; }
}

/* TOC (right sidebar) */
.doc-toc {
  width: var(--toc-width);
  flex-shrink: 0;
  position: fixed;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  overflow-y: auto;
  padding: var(--space-6) var(--space-4);
}

.doc-toc .toc-heading {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  margin-bottom: var(--space-3);
}
.doc-toc .toc-nav { list-style: none; padding: 0; margin: 0; }
.doc-toc .toc-nav li { margin: 0; }
.doc-toc .toc-nav a {
  display: block;
  padding: var(--space-1) 0 var(--space-1) var(--space-3);
  font-size: 0.8125rem;
  color: var(--gray-500);
  border-left: 2px solid var(--gray-200);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.doc-toc .toc-nav a:hover { color: var(--cyan-600); }
.doc-toc .toc-nav a.active {
  color: var(--cyan-600);
  border-left-color: var(--cyan-500);
  font-weight: 600;
}
.doc-toc .toc-nav a.toc-h3 {
  padding-left: var(--space-6);
  font-size: 0.75rem;
}

@media (min-width: 1400px) {
  .doc-content-wrapper {
    padding-right: var(--toc-width);
  }
}

@media (max-width: 1399px) {
  .doc-toc { display: none; }
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.8125rem;
  margin-bottom: var(--space-5);
  color: var(--text-muted);
}
.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumbs a:hover { color: var(--cyan-600); }
.breadcrumbs .breadcrumb-sep { color: var(--gray-400); }
.breadcrumbs .breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* ==========================================================================
   Article typography
   ========================================================================== */

.doc-article h1 { margin-bottom: var(--space-3); }
.doc-article .lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}
.doc-article p { color: var(--gray-700); }
.doc-article ul, .doc-article ol { color: var(--gray-700); }
.doc-article li { margin-bottom: var(--space-2); }

.doc-article blockquote {
  border-left: 4px solid var(--cyan-500);
  margin: var(--space-5) 0;
  padding: var(--space-3) var(--space-5);
  background: var(--cyan-50);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--navy-700);
}
.doc-article blockquote p:last-child { margin-bottom: 0; }

.doc-article table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-5) 0;
  font-size: 0.875rem;
}
.doc-article table th {
  text-align: left;
  padding: var(--space-3);
  background: var(--navy-50);
  font-weight: 600;
  color: var(--navy-900);
  border-bottom: 2px solid var(--border-color-strong);
}
.doc-article table td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--border-color);
  color: var(--gray-700);
}
.doc-article table tbody tr:hover { background: var(--gray-50); }

.doc-article hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--space-7) 0;
}

/* ==========================================================================
   Status Badges
   ========================================================================== */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 100px;
  line-height: 1.4;
  white-space: nowrap;
}
.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.status-available { background: var(--success-bg); color: #047857; }
.status-development { background: var(--info-bg); color: #0e7490; }
.status-coming-soon { background: var(--warning-bg); color: #b45309; }
.status-planned { background: var(--neutral-bg); color: #475569; }

/* ==========================================================================
   Cards
   ========================================================================== */

.card-base {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}
.card-base:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--gray-300);
}

.product-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  height: 100%;
}
.product-card .product-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.product-card .product-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy-900);
  margin: 0;
}
.product-card .product-subdomain {
  font-size: 0.8125rem;
  color: var(--cyan-600);
  font-family: var(--font-mono);
}
.product-card .product-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
  flex: 1;
}

/* Guide card */
.guide-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.guide-card:hover { text-decoration: none; color: inherit; }
.guide-card .guide-category {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan-600);
}
.guide-card .guide-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy-900);
  margin: 0;
}
.guide-card .guide-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
  flex: 1;
}
.guide-card .guide-arrow {
  font-size: 0.8125rem;
  color: var(--cyan-600);
  font-weight: 500;
}

/* News card */
.news-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  height: 100%;
}
.news-card .news-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
}
.news-card .news-category {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 100px;
}
.news-card .news-date { color: var(--text-muted); }
.news-card .news-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--navy-900);
  margin: 0;
}
.news-card .news-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
  flex: 1;
}
.news-card .news-read-more {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cyan-600);
  text-decoration: none;
}

/* Category badge colors */
.cat-product-update { background: #dbeafe; color: #1e40af; }
.cat-platform-update { background: #e0e7ff; color: #3730a3; }
.cat-development { background: var(--cyan-100); color: #0e7490; }
.cat-announcement { background: var(--gold-100); color: #92400e; }
.cat-ecosystem { background: #d1fae5; color: #065f46; }
.cat-education { background: #fce7f3; color: #9d174d; }

/* ==========================================================================
   Hero (Home)
   ========================================================================== */

.home-hero {
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--navy-700) 100%);
  color: var(--white);
  padding: var(--space-9) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}
.home-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.home-hero .hero-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--space-5);
  position: relative;
}
.home-hero h1 {
  color: var(--white);
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}
.home-hero .hero-tagline {
  font-size: 1.25rem;
  color: var(--cyan-300);
  font-weight: 500;
  margin-bottom: var(--space-3);
}
.home-hero .hero-desc {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}
.home-hero .hero-buttons {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.btn-hero-primary {
  background: var(--cyan-500);
  color: var(--navy-900);
  border: none;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  transition: background var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.btn-hero-primary:hover {
  background: var(--cyan-400);
  color: var(--navy-900);
  transform: translateY(-1px);
}

.btn-hero-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Home hero search */
.home-hero .hero-search {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}
.home-hero .hero-search input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 3rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.home-hero .hero-search input::placeholder { color: rgba(255, 255, 255, 0.5); }
.home-hero .hero-search input:focus {
  border-color: var(--cyan-500);
  background: rgba(255, 255, 255, 0.12);
}
.home-hero .hero-search .hero-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   Home sections
   ========================================================================== */

.home-section {
  padding: var(--space-8) 0;
}
.home-section .section-header {
  text-align: center;
  margin-bottom: var(--space-7);
}
.home-section .section-header h2 {
  margin-top: 0;
  margin-bottom: var(--space-2);
}
.home-section .section-header p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  margin-bottom: 0;
}

.section-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cyan-600);
  margin-bottom: var(--space-2);
}

.info-banner {
  background: var(--cyan-50);
  border: 1px solid var(--cyan-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  margin: var(--space-5) 0;
}
.info-banner .info-icon { color: var(--cyan-600); flex-shrink: 0; margin-top: 2px; }
.info-banner .info-content { flex: 1; }
.info-banner .info-content p { margin: 0; font-size: 0.875rem; color: var(--navy-700); }

/* Ad slot */
.ad-slot {
  position: relative;
  margin: calc(var(--space-5) + 10px) 0 var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  background: #fff;
  box-shadow: 0 1px 3px rgba(15, 37, 64, 0.06);
}
.ad-slot-badge {
  position: absolute;
  top: -11px;
  right: var(--space-4);
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--navy-800);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  box-shadow: 0 1px 2px rgba(15, 37, 64, 0.2);
}
.ad-slot-link {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  text-decoration: none;
  color: inherit;
}
.ad-slot-image-wrap {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}
.ad-slot-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ad-slot-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ad-slot-title {
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--navy-900);
}
.ad-slot-desc {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--navy-400);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ad-slot-cta-btn {
  align-self: flex-start;
  margin-top: 2px;
  padding: 6px 16px;
  border-radius: var(--radius-md);
  background: var(--navy-800);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
}
@media (max-width: 420px) {
  .ad-slot-image-wrap { flex-basis: 52px; width: 52px; height: 52px; }
}

/* Quick links grid */
.quick-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}
.quick-link:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--cyan-300);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}
.quick-link .quick-link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--navy-50);
  color: var(--cyan-600);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}
.quick-link .quick-link-text { flex: 1; }
.quick-link .quick-link-title {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--navy-900);
  margin: 0;
}
.quick-link .quick-link-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-8) 0 var(--space-5);
  margin-left: var(--sidebar-width);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.site-footer .footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.site-footer h4 {
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer ul li { margin-bottom: var(--space-2); }
.site-footer ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  text-decoration: none;
}
.site-footer ul a:hover { color: var(--cyan-400); }
.site-footer .footer-brand p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--space-2);
  max-width: 280px;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (max-width: 991.98px) {
  .site-footer { margin-left: 0; }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
}
@media (max-width: 575.98px) {
  .site-footer .footer-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Back to top
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  width: 44px;
  height: 44px;
  background: var(--navy-900);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), background var(--transition-fast), transform var(--transition-fast);
  z-index: 1000;
  box-shadow: var(--shadow-md);
}
.back-to-top.show { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: var(--cyan-600); transform: translateY(-2px); }

/* ==========================================================================
   Prev / Next navigation
   ========================================================================== */

.doc-prev-next {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-color);
}
.doc-prev-next a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  max-width: 48%;
}
.doc-prev-next a:hover {
  border-color: var(--cyan-300);
  box-shadow: var(--shadow-sm);
}
.doc-prev-next .pn-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}
.doc-prev-next .pn-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--navy-900);
}
.doc-prev-next a.next { text-align: right; margin-left: auto; }

/* ==========================================================================
   Misc utilities
   ========================================================================== */

.text-cyan { color: var(--cyan-600) !important; }
.text-navy { color: var(--navy-900) !important; }
.text-muted { color: var(--text-muted) !important; }

.bg-navy { background: var(--navy-900); }
.bg-cyan-50 { background: var(--cyan-50); }
.bg-subtle { background: var(--bg-subtle); }

.rounded-lg { border-radius: var(--radius-lg); }

.icon-cyan { color: var(--cyan-600); }
.icon-navy { color: var(--navy-800); }
.icon-gold { color: var(--gold-500); }

/* Product icon backgrounds */
.icon-bg-cyan { background: var(--cyan-50); color: var(--cyan-600); }
.icon-bg-navy { background: var(--navy-50); color: var(--navy-700); }
.icon-bg-gold { background: var(--gold-50); color: var(--gold-500); }
.icon-bg-green { background: #d1fae5; color: #059669; }
.icon-bg-blue { background: #dbeafe; color: #2563eb; }
.icon-bg-purple { background: #ede9fe; color: #7c3aed; }

/* Version card */
.version-card {
  border-left: 3px solid var(--cyan-500);
}
.version-card .version-number {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy-900);
}
.version-card .version-date {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Release notes */
.release-entry {
  margin-bottom: var(--space-7);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--border-color);
}
.release-entry:last-child { border-bottom: none; }
.release-entry .release-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.release-entry .release-version {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--navy-900);
  margin: 0;
}
.release-entry .release-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.release-section { margin-bottom: var(--space-4); }
.release-section h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}
.release-section ul { padding-left: var(--space-5); margin-bottom: 0; }
.release-section.added h4 { color: var(--success); }
.release-section.changed h4 { color: var(--cyan-600); }
.release-section.fixed h4 { color: var(--gold-500); }
.release-section.removed h4 { color: var(--danger); }
.release-section.known-issues h4 { color: var(--neutral); }

/* Placeholder notice */
.placeholder-notice {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--space-4);
}

/* API doc placeholder */
.api-placeholder {
  text-align: center;
  padding: var(--space-9) var(--space-5);
}
.api-placeholder .api-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--navy-50);
  color: var(--cyan-600);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-5);
}
.api-placeholder h2 { margin-top: 0; }
.api-placeholder p { color: var(--text-secondary); max-width: 480px; margin: 0 auto var(--space-2); }

/* FAQ */
.faq-section .accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg) !important;
  margin-bottom: var(--space-3);
  overflow: hidden;
}
.faq-section .accordion-button {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--navy-900);
  padding: var(--space-4) var(--space-5);
}
.faq-section .accordion-button:not(.collapsed) {
  background: var(--cyan-50);
  color: var(--navy-900);
  box-shadow: none;
}
.faq-section .accordion-button:focus { box-shadow: none; }
.faq-section .accordion-body {
  padding: 0 var(--space-5) var(--space-4);
  color: var(--gray-700);
  font-size: 0.9375rem;
}

/* Feature list */
.feature-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-color);
}
.feature-item:last-child { border-bottom: none; }
.feature-item .feature-info { flex: 1; }
.feature-item .feature-name {
  font-weight: 600;
  color: var(--navy-900);
  font-size: 0.9375rem;
}
.feature-item .feature-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Home page: full-width footer, no sidebar margin */
body.is-home .site-footer { margin-left: 0; }
.container-fluid-doc {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0;
}

/* Home content (no sidebar) */
.home-content { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-5); }

body.is-home main#main-content { padding-top: var(--header-height); }

@media (max-width: 575.98px) {
  .home-hero .hero-buttons { flex-direction: column; align-items: stretch; }
  .home-hero .hero-buttons .btn-hero-primary,
  .home-hero .hero-buttons .btn-hero-secondary { width: 100%; justify-content: center; }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--navy-900);
  color: var(--white);
  padding: var(--space-2) var(--space-4);
  z-index: 3000;
  border-radius: 0 0 var(--radius-md) 0;
  font-size: 0.875rem;
  font-weight: 500;
}
.skip-link:focus { top: 0; color: var(--white); }

/* Print */
@media print {
  .site-header, .doc-sidebar, .doc-toc, .back-to-top, .sidebar-backdrop { display: none !important; }
  .doc-content-wrapper { margin-left: 0; }
  .site-footer { margin-left: 0; }
}

/* ===== Other Skoolyst Apps (cards above the footer) ===== */
.skoolyst-apps {
    --sk-primary: #0A2D52; --sk-primary-soft: #eef3f8; --sk-text: #1c2b3a; --sk-muted: #63758a;
    --sk-border: #e4e9f0; --sk-radius: 12px;
    --sk-shadow: 0 6px 24px rgba(10, 45, 82, 0.08); --sk-shadow-hover: 0 12px 32px rgba(10, 45, 82, 0.14);
    background: #fff; border-top: 1px solid var(--sk-border); padding: 48px 0; margin-top: 40px;
    font-family: 'Poppins', 'Segoe UI', sans-serif; line-height: 1.6;
}
.skoolyst-apps *, .skoolyst-apps *::before, .skoolyst-apps *::after { box-sizing: border-box; }
.skoolyst-apps-inner { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.skoolyst-apps-title { text-align: center; font-size: 24px; font-weight: 700; color: var(--sk-primary); margin: 0 0 28px; }
.skoolyst-apps-grid { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; }
.skoolyst-apps-grid li { flex: 0 1 calc((100% - 36px) / 3); margin: 0; padding: 0; }
.skoolyst-apps-grid li::before, .skoolyst-apps-grid li::marker { content: none; }
.skoolyst-app-card {
    display: flex; flex-direction: column; height: 100%; padding: 22px; background: #fff; text-decoration: none;
    border: 1px solid var(--sk-border); border-radius: var(--sk-radius); box-shadow: var(--sk-shadow); transition: .25s;
}
.skoolyst-app-card:hover, .skoolyst-app-card:focus-visible {
    box-shadow: var(--sk-shadow-hover); transform: translateY(-4px); border-color: var(--sk-primary); outline: none; text-decoration: none;
}
.skoolyst-app-icon {
    width: 44px; height: 44px; border-radius: 10px; background: var(--sk-primary-soft); color: var(--sk-primary);
    display: inline-flex; align-items: center; justify-content: center; font-size: 19px; font-weight: 700; margin-bottom: 14px;
}
.skoolyst-app-name { font-weight: 600; font-size: 17px; color: var(--sk-text); margin-bottom: 4px; }
.skoolyst-app-desc { color: var(--sk-muted); font-size: 13.5px; line-height: 1.55; }
/* Sit beside the sidebar exactly like the footer does (see .site-footer). */
.skoolyst-apps { margin-left: var(--sidebar-width); }
body.is-home .skoolyst-apps { margin-left: 0; }
@media (max-width: 991.98px) { .skoolyst-apps { margin-left: 0; } }
@media (max-width: 860px) { .skoolyst-apps-grid li { flex-basis: calc((100% - 18px) / 2); } }
@media (max-width: 560px) {
    .skoolyst-apps { padding: 36px 0; }
    .skoolyst-apps-inner { padding: 0 16px; }
    .skoolyst-apps-title { font-size: 21px; }
    .skoolyst-apps-grid { gap: 14px; }
    .skoolyst-apps-grid li { flex-basis: 100%; }
}