/* ============================================
   TRAVELSTOP KNOWLEDGE BASE - Design System
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Brand Colors */
  --primary: #10B981;
  --primary-dark: #047857;
  --primary-light: #34D399;
  --primary-bg: #D1FAE5;

  /* Neutral Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FB;
  --bg-tertiary: #F0F2F5;
  --bg-sidebar: #FAFBFC;
  --bg-hover: #F0F4F8;
  --bg-active: #E8F0FE;

  --text-primary: #1A1D23;
  --text-secondary: #5F6B7A;
  --text-tertiary: #8B95A5;
  --text-inverse: #FFFFFF;

  --border-color: #E2E6EB;
  --border-light: #F0F2F5;
  --border-focus: var(--primary);

  /* Callout Colors */
  --info-bg: #EBF5FF;
  --info-border: #3399FF;
  --info-text: #004085;
  --info-icon: #0066CC;

  --success-bg: #E6F9EE;
  --success-border: #28A745;
  --success-text: #155724;
  --success-icon: #28A745;

  --warning-bg: #FFF8E6;
  --warning-border: #F0AD4E;
  --warning-text: #856404;
  --warning-icon: #E09600;

  --danger-bg: #FDE8E8;
  --danger-border: #DC3545;
  --danger-text: #721C24;
  --danger-icon: #DC3545;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);

  /* Layout */
  --sidebar-width: 280px;
  --header-height: 60px;
  --content-max-width: 860px;
  --toc-width: 220px;

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

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --primary: #10B981;
  --primary-dark: #059669;
  --primary-light: #34D399;
  --primary-bg: #064E3B;

  --bg-primary: #0F1117;
  --bg-secondary: #161920;
  --bg-tertiary: #1D2028;
  --bg-sidebar: #12141A;
  --bg-hover: #1D2230;
  --bg-active: #1A2A3A;

  --text-primary: #E8ECF2;
  --text-secondary: #9AA5B4;
  --text-tertiary: #6B7585;
  --text-inverse: #0F1117;

  --border-color: #2A2E38;
  --border-light: #1D2028;
  --border-focus: var(--primary);

  --info-bg: #0D2137;
  --info-border: #2B6CB0;
  --info-text: #90CDF4;

  --success-bg: #0D2818;
  --success-border: #2F855A;
  --success-text: #9AE6B4;

  --warning-bg: #2D2306;
  --warning-border: #B7791F;
  --warning-text: #FAF089;

  --danger-bg: #2D0F0F;
  --danger-border: #C53030;
  --danger-text: #FEB2B2;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: var(--primary);
  color: var(--text-inverse);
}

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

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 20px;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .header {
  background: rgba(15, 17, 23, 0.92);
}

.header__left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 260px;
}

.header__menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.header__menu-btn:hover {
  background: var(--bg-hover);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}
.header__logo:hover {
  text-decoration: none;
  color: var(--primary);
}
.header__logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 800;
}

.header__logo-text span {
  color: var(--text-tertiary);
  font-weight: 400;
  font-size: 0.85rem;
  display: block;
  line-height: 1.1;
}

.header__center {
  flex: 1;
  max-width: 520px;
  margin: 0 24px;
}

.header__right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* --- Search Bar --- */
.search-container {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 9px 16px 9px 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
  transition: all var(--transition-fast);
}
.search-input::placeholder {
  color: var(--text-tertiary);
}
.search-input:focus {
  border-color: var(--primary);
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.12);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
  font-size: 14px;
}

.search-shortcut {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 2px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  color: var(--text-tertiary);
  background: var(--bg-primary);
  pointer-events: none;
}

/* Search Results Dropdown */
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 420px;
  overflow-y: auto;
  z-index: 1001;
  display: none;
}
.search-results.active {
  display: block;
}

.search-result-item {
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-fast);
}
.search-result-item:last-child {
  border-bottom: none;
}
.search-result-item:hover {
  background: var(--bg-hover);
}
.search-result-item__title {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 2px;
  color: var(--text-primary);
}
.search-result-item__breadcrumb {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}
.search-result-item__snippet {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}
.search-result-item__snippet mark {
  background: var(--warning-bg);
  color: var(--warning-text);
  padding: 0 2px;
  border-radius: 2px;
}
.search-no-results {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* --- Theme Toggle --- */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px 10px;
  border-radius: var(--radius-full);
  font-size: 16px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover {
  background: var(--bg-hover);
  border-color: var(--primary);
  color: var(--primary);
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 900;
  padding: 16px 0;
  transition: transform var(--transition-base);
}

.sidebar__section {
  margin-bottom: 4px;
}

.sidebar__section-title {
  padding: 6px 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-top: 16px;
  margin-bottom: 4px;
}

.sidebar__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 20px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 450;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  text-decoration: none;
  user-select: none;
}
.sidebar__item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  text-decoration: none;
}
.sidebar__item.active {
  background: var(--bg-active);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}
.sidebar__item-icon {
  font-size: 1rem;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

/* Expandable sections */
.sidebar__group {
  position: relative;
}
.sidebar__group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 20px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  user-select: none;
}
.sidebar__group-header:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.sidebar__group-header.active {
  color: var(--primary);
  font-weight: 600;
}
.sidebar__group-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar__group-chevron {
  font-size: 10px;
  color: var(--text-tertiary);
  transition: transform var(--transition-fast);
  margin-right: 4px;
}
.sidebar__group.expanded .sidebar__group-chevron {
  transform: rotate(90deg);
}

.sidebar__group-children {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}
.sidebar__group.expanded .sidebar__group-children {
  max-height: 600px;
}

.sidebar__child-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px 6px 50px;
  color: var(--text-secondary);
  font-size: 0.825rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  text-decoration: none;
}
.sidebar__child-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  text-decoration: none;
}
.sidebar__child-item.active {
  color: var(--primary);
  background: var(--bg-active);
  border-left-color: var(--primary);
  font-weight: 600;
}

.sidebar__child-item::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-tertiary);
  flex-shrink: 0;
  margin-left: -16px;
  margin-right: 8px;
}
.sidebar__child-item.active::before {
  background: var(--primary);
}

/* Deep nesting */
.sidebar__grandchild-item {
  padding-left: 66px;
  font-size: 0.8rem;
}

/* --- Sidebar Overlay (Mobile) --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 899;
  backdrop-filter: blur(2px);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-wrapper {
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  min-height: 100vh;
  display: flex;
}

.main-content {
  flex: 1;
  max-width: var(--content-max-width);
  padding: 32px 48px 80px;
  margin: 0 auto;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumbs a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover {
  color: var(--primary);
  text-decoration: none;
}
.breadcrumbs__separator {
  font-size: 10px;
  color: var(--text-tertiary);
}
.breadcrumbs__current {
  color: var(--text-primary);
  font-weight: 500;
}

/* --- Page Header --- */
.page-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}
.page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.page-header__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}
.page-header__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- Content Typography --- */
.content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
  letter-spacing: -0.01em;
}
.content h3 {
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 12px;
}
.content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 24px;
  margin-bottom: 8px;
}
.content p {
  margin-bottom: 16px;
  color: var(--text-primary);
  line-height: 1.75;
}
.content ul, .content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}
.content li {
  margin-bottom: 6px;
  line-height: 1.65;
}
.content strong {
  font-weight: 650;
}
.content hr {
  border: none;
  height: 1px;
  background: var(--border-color);
  margin: 40px 0;
}

/* --- Callout Boxes --- */
.callout {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin: 20px 0;
  font-size: 0.9rem;
  line-height: 1.65;
}
.callout__title {
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.callout--info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: var(--info-text);
}
.callout--success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-text);
}
.callout--warning {
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning-text);
}
.callout--danger {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-text);
}

/* --- Code Blocks & GDS Commands --- */
.code-block {
  position: relative;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin: 16px 0;
  overflow: hidden;
}
[data-theme="dark"] .code-block {
  background: #1a1d24;
}
.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.code-block__copy {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-family: var(--font-sans);
  font-weight: 500;
  transition: all var(--transition-fast);
}
.code-block__copy:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.code-block__copy.copied {
  background: var(--success-border);
  color: white;
  border-color: var(--success-border);
}
.code-block__body {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.65;
  overflow-x: auto;
  white-space: pre;
}

/* Inline code */
.content code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
  border: 1px solid var(--border-color);
}

/* --- Tables --- */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.content thead {
  background: var(--bg-secondary);
}
.content th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 650;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
}
.content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
}
.content tbody tr:hover {
  background: var(--bg-hover);
}
.content tbody tr:last-child td {
  border-bottom: none;
}

/* --- Collapsible Sections --- */
.collapsible {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin: 16px 0;
  overflow: hidden;
}
.collapsible__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--bg-secondary);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: background var(--transition-fast);
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}
.collapsible__trigger:hover {
  background: var(--bg-hover);
}
.collapsible__trigger-icon {
  transition: transform var(--transition-fast);
  font-size: 12px;
  color: var(--text-tertiary);
}
.collapsible.open .collapsible__trigger-icon {
  transform: rotate(180deg);
}
.collapsible__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}
.collapsible.open .collapsible__content {
  max-height: 2000px;
}
.collapsible__content-inner {
  padding: 20px;
}

/* --- Quick Links Cards --- */
.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.quick-link-card {
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}
.quick-link-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.quick-link-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}
.quick-link-card:hover::before {
  opacity: 1;
}
.quick-link-card__icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}
.quick-link-card__title {
  font-weight: 650;
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.quick-link-card__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- What's New Banner --- */
.whats-new {
  background: linear-gradient(135deg, var(--primary-bg), var(--bg-secondary));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}
[data-theme="dark"] .whats-new {
  background: linear-gradient(135deg, var(--primary-bg), var(--bg-secondary));
}
.whats-new__title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.whats-new__item {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Flowchart Steps --- */
.workflow-steps {
  margin: 24px 0;
  position: relative;
}
.workflow-step {
  display: flex;
  gap: 16px;
  position: relative;
  padding-bottom: 24px;
}
.workflow-step:last-child {
  padding-bottom: 0;
}
.workflow-step__number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
  z-index: 1;
}
.workflow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}
.workflow-step__content {
  flex: 1;
  padding-top: 6px;
}
.workflow-step__title {
  font-weight: 650;
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.workflow-step__body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- Table of Contents (right side) --- */
.toc {
  position: sticky;
  top: calc(var(--header-height) + 32px);
  width: var(--toc-width);
  max-height: calc(100vh - var(--header-height) - 64px);
  overflow-y: auto;
  padding: 0 24px;
  flex-shrink: 0;
  display: none;
}
.toc.visible {
  display: block;
}
.toc__title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}
.toc__list {
  list-style: none;
  padding: 0;
}
.toc__link {
  display: block;
  padding: 4px 0 4px 12px;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  border-left: 2px solid var(--border-color);
  transition: all var(--transition-fast);
  line-height: 1.5;
}
.toc__link:hover {
  color: var(--text-primary);
  text-decoration: none;
}
.toc__link.active {
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 500;
}
.toc__link--h3 {
  padding-left: 24px;
}

/* --- Feedback Widget --- */
.feedback-widget {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  text-align: center;
}
.feedback-widget__question {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.feedback-widget__buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.feedback-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.feedback-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}
.feedback-btn.selected {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.feedback-thanks {
  display: none;
  color: var(--success-text);
  font-size: 0.85rem;
  margin-top: 12px;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.feedback-thanks.show {
  display: flex;
}

/* --- Back to Top Button --- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-base);
  z-index: 800;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* --- Coming Soon Placeholder --- */
.coming-soon {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
}
.coming-soon__icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}
.coming-soon__title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.coming-soon__desc {
  font-size: 0.9rem;
  max-width: 400px;
  margin: 0 auto;
}

/* --- Page Footer --- */
.page-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}
.page-footer a {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  font-weight: 500;
}
.page-footer a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* --- Status Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge--new {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}
.badge--updated {
  background: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (min-width: 1280px) {
  .toc.visible {
    display: block;
  }
}
@media (max-width: 1279px) {
  .toc {
    display: none !important;
  }
  .main-content {
    padding-right: 32px;
  }
}

@media (max-width: 768px) {
  .header__menu-btn {
    display: flex;
  }
  .header__left {
    min-width: auto;
  }
  .header__logo-text span {
    display: none;
  }
  .header__center {
    margin: 0 12px;
  }
  .search-shortcut {
    display: none;
  }

  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }
  .sidebar-overlay.active {
    display: block;
  }

  .main-wrapper {
    margin-left: 0;
  }
  .main-content {
    padding: 24px 20px 80px;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }
  .quick-links {
    grid-template-columns: 1fr;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
  }
  .page-footer {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .header,
  .sidebar,
  .sidebar-overlay,
  .back-to-top,
  .theme-toggle,
  .feedback-widget,
  .toc,
  .code-block__copy,
  .search-container,
  .header__menu-btn {
    display: none !important;
  }
  .main-wrapper {
    margin-left: 0 !important;
  }
  .main-content {
    padding: 0 !important;
    max-width: 100% !important;
  }
  body {
    background: white;
    color: black;
    font-size: 11pt;
  }
  .content h2 {
    page-break-after: avoid;
  }
  .callout, .code-block, .collapsible {
    break-inside: avoid;
  }
  .collapsible__content {
    max-height: none !important;
  }
  a[href]::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
    color: #666;
  }
  .sidebar__item, .breadcrumbs a, .quick-link-card {
    color: black;
  }
  .sidebar__item a::after, .breadcrumbs a::after, .quick-link-card a::after {
    content: none;
  }
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

.page-content {
  animation: fadeIn 0.3s ease;
}

/* --- Blockquotes --- */
.content blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 20px;
  margin: 16px 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.93rem;
  color: var(--text-secondary);
}

/* --- Decision box --- */
.decision-box {
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
  background: var(--primary-bg);
  text-align: center;
}
.decision-box__question {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.decision-box__options {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.decision-box__option {
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: default;
}
.decision-box__option--yes {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}
.decision-box__option--no {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

/* ============================================
   ADMIN MODE STYLES
   ============================================ */

/* --- Admin Toolbar --- */
.admin-toolbar {
  position: fixed;
  top: var(--header-height);
  left: var(--sidebar-width);
  right: 0;
  height: 44px;
  background: linear-gradient(90deg, #1a1d23, #2d3748);
  color: white;
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 950;
  font-size: 0.8rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.admin-toolbar.visible {
  display: flex;
}

.admin-mode .main-wrapper {
  padding-top: calc(var(--header-height) + 44px);
}

.admin-toolbar__left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.admin-toolbar__right {
  display: flex;
  align-items: center;
  gap: 6px;
}
.admin-badge {
  background: linear-gradient(135deg, #F59E0B, #D97706);
  color: #1a1d23;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.admin-toolbar__btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  padding: 5px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.admin-toolbar__btn:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.3);
}
.admin-toolbar__btn--danger {
  color: #FCA5A5;
  border-color: rgba(252,165,165,0.3);
}
.admin-toolbar__btn--danger:hover {
  background: rgba(220,38,38,0.3);
}

/* --- Block Edit Overlays --- */
.kb-block {
  position: relative;
  transition: outline 0.15s ease, background 0.15s ease;
}
.kb-block--editable {
  outline: 2px dashed transparent;
  border-radius: var(--radius-md);
  padding: 4px;
  margin: -4px;
}
.kb-block--editable:hover {
  outline-color: var(--primary);
  background: rgba(0, 102, 204, 0.03);
}
[data-theme="dark"] .kb-block--editable:hover {
  background: rgba(77, 163, 255, 0.05);
}

.block-toolbar {
  position: absolute;
  top: 4px;
  right: 4px;
  display: none;
  gap: 2px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 3px;
  box-shadow: var(--shadow-md);
  z-index: 10;
}
.kb-block--editable:hover .block-toolbar {
  display: flex;
}
.block-toolbar__btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  line-height: 1;
  transition: background var(--transition-fast);
}
.block-toolbar__btn:hover {
  background: var(--bg-hover);
}
.block-toolbar__btn--danger:hover {
  background: var(--danger-bg);
}

/* --- Add Block Button --- */
.add-block-btn-wrap {
  text-align: center;
  padding: 4px 0;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.admin-mode .add-block-btn-wrap:hover,
.admin-mode .kb-block--editable:hover + .add-block-btn-wrap {
  opacity: 1;
}
.add-block-btn {
  background: none;
  border: 2px dashed var(--border-color);
  color: var(--text-tertiary);
  padding: 6px 20px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.add-block-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
}
.modal {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.2s ease;
}
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-color);
}
.modal__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.modal__close {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.modal__close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.modal__body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}
.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
}
.modal__btn {
  padding: 8px 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid;
}
.modal__btn--primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.modal__btn--primary:hover {
  background: var(--primary-dark);
}
.modal__btn--secondary {
  background: var(--bg-primary);
  color: var(--text-secondary);
  border-color: var(--border-color);
}
.modal__btn--secondary:hover {
  background: var(--bg-hover);
}
.modal__btn--danger {
  background: #DC3545;
  color: white;
  border-color: #DC3545;
}
.modal__btn--danger:hover {
  background: #C82333;
}

/* --- Editor Form Elements --- */
.editor-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.editor-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: -6px;
}
.editor-hint {
  font-weight: 400;
  color: var(--text-tertiary);
  font-size: 0.75rem;
}
.editor-input {
  width: 100%;
  padding: 9px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast);
}
.editor-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
}
.editor-input--mono {
  font-family: var(--font-mono);
}
.editor-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
  resize: vertical;
  line-height: 1.6;
  transition: border-color var(--transition-fast);
}
.editor-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
}
.editor-select {
  width: 100%;
  padding: 9px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
}
.editor-select:focus {
  border-color: var(--primary);
}

/* --- Block Type Selector Grid --- */
.block-type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  margin-top: 4px;
}
.block-type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}
.block-type-card:hover {
  border-color: var(--primary);
  background: var(--primary-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.block-type-card__icon {
  font-size: 1.5rem;
}
.block-type-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* --- Workflow Step Editor --- */
.editor-step {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  margin-bottom: 8px;
  background: var(--bg-secondary);
}
.editor-step__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.editor-btn-small {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 5px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.editor-btn-small:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.editor-btn-small--danger {
  color: var(--danger-text);
  border: none;
  padding: 2px 6px;
  font-size: 0.85rem;
}
.editor-btn-small--danger:hover {
  background: var(--danger-bg);
  color: var(--danger-text);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
.toast {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.3s ease;
  white-space: nowrap;
}
.toast--visible {
  opacity: 1;
  transform: translateY(0);
}
.toast--success {
  background: #059669;
  color: white;
}
.toast--info {
  background: #1A1D23;
  color: white;
}
[data-theme="dark"] .toast--info {
  background: #E8ECF2;
  color: #1A1D23;
}
.toast--danger {
  background: #DC3545;
  color: white;
}

/* --- Nav Editor --- */
.nav-editor-container {
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px;
  background: var(--bg-primary);
}
.nav-editor-item {
  display: flex;
  flex-direction: column;
  padding: 4px 0;
  border-bottom: 1px dotted var(--border-color);
}
.nav-editor-item:last-child {
  border-bottom: none;
}
.nav-editor-item__row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
}
.nav-editor-item__row:hover {
  background: var(--bg-hover);
}
.nav-editor-item__icon {
  font-size: 1.1rem;
}
.nav-editor-item__label {
  flex: 1;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.nav-editor-item__page-id {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}
.nav-editor-item__actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.nav-editor-item__row:hover .nav-editor-item__actions {
  opacity: 1;
}
.nav-editor-btn {
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-editor-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}
.nav-editor-btn--danger:hover {
  background: var(--danger-bg);
  border-color: rgba(220,53,69,0.3);
}

/* --- Admin Responsive --- */
@media (max-width: 768px) {
  .admin-toolbar {
    left: 0;
    flex-wrap: wrap;
    height: auto;
    padding: 8px 12px;
    gap: 6px;
  }
  .admin-toolbar__right {
    flex-wrap: wrap;
  }
  .admin-toolbar__btn {
    font-size: 0.7rem;
    padding: 4px 8px;
  }
  .admin-mode .main-wrapper {
    padding-top: calc(var(--header-height) + 56px);
  }
  .block-type-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .modal {
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius-lg);
  }
}

@media print {
  .admin-toolbar,
  .block-toolbar,
  .add-block-btn-wrap,
  .toast-container,
  .modal-overlay {
    display: none !important;
  }
}