/* ========================================
   Prism Design System — Documentation Site
   ======================================== */

:root {
  /* Brand Colors */
  --color-primary: #6C63FF;
  --color-primary-light: #8B85FF;
  --color-primary-dark: #4F46E5;
  --color-accent: #00D4AA;
  --color-accent-warm: #F5A623;

  /* Surfaces */
  --surface-bg: #FFFFFF;
  --surface-sidebar: #0F1B2D;
  --surface-sidebar-hover: #1A2B42;
  --surface-sidebar-active: #1F3354;
  --surface-card: #F8F9FC;
  --surface-code: #0F1B2D;
  --surface-topbar: #FFFFFF;

  /* Text */
  --text-primary: #0F1B2D;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;
  --text-sidebar: #94A3B8;
  --text-sidebar-active: #FFFFFF;
  --text-sidebar-label: #475569;
  --text-link: #6C63FF;

  /* Borders */
  --border-color: #E5E7EB;
  --border-sidebar: #1A2B42;

  /* Sidebar */
  --sidebar-width: 260px;
  --topbar-height: 0px;

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

  /* Spacing */
  --content-max-width: 860px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

  /* Transitions */
  --transition: 0.2s ease;

  /* Product Colors */
  --spark: #E8572A;
  --stream: #2A6BE8;
  --clarity: #7B2FD4;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--surface-bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: var(--font-sans); cursor: pointer; border: none; background: none; }

/* ---- Layout ---- */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ---- Topbar ---- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  background: var(--surface-topbar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px 0 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.topbar-left {
  width: var(--sidebar-width);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 10px;
  flex-shrink: 0;
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.topbar-logo-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #6C63FF, #00D4AA);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.topbar-logo-mark svg { width: 18px; height: 18px; }
.topbar-logo-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.topbar-logo-version {
  font-size: 10px;
  font-weight: 600;
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 2px 7px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}
.topbar-center {
  flex: 1;
  max-width: 480px;
  margin: 0 24px;
}
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0 14px;
  height: 38px;
  transition: border-color var(--transition);
}
.search-bar:focus-within { border-color: var(--color-primary); }
.search-bar svg { color: var(--text-muted); flex-shrink: 0; }
.search-bar input {
  border: none;
  background: none;
  outline: none;
  font-size: 14px;
  color: var(--text-primary);
  width: 100%;
  font-family: var(--font-sans);
}
.search-bar input::placeholder { color: var(--text-muted); }
.search-shortcut {
  font-size: 11px;
  color: var(--text-muted);
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
  font-family: var(--font-mono);
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.topbar-link {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition);
  padding: 6px 10px;
  border-radius: 6px;
}
.topbar-link:hover { color: var(--text-primary); background: var(--surface-card); text-decoration: none; }
.topbar-github {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}
.topbar-github:hover { background: var(--surface-card); color: var(--text-primary); text-decoration: none; }
.topbar-github svg { width: 16px; height: 16px; }
.topbar-version-badge {
  font-size: 12px;
  font-weight: 600;
  background: linear-gradient(135deg, #6C63FF22, #00D4AA22);
  border: 1px solid #6C63FF44;
  color: var(--color-primary);
  padding: 4px 10px;
  border-radius: 999px;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--surface-sidebar);
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 90;
  scrollbar-width: thin;
  scrollbar-color: #1F3354 transparent;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: #1F3354; border-radius: 4px; }
.sidebar-nav { padding: 16px 0 40px; }
.sidebar-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-sidebar-label);
  padding: 16px 20px 6px;
  display: block;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  font-size: 14px;
  color: var(--text-sidebar);
  font-weight: 500;
  text-decoration: none;
  border-radius: 0;
  transition: all var(--transition);
  border-left: 3px solid transparent;
  position: relative;
}
.sidebar-item svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.7; }
.sidebar-item:hover {
  color: #CBD5E1;
  background: var(--surface-sidebar-hover);
  text-decoration: none;
}
.sidebar-item.active {
  color: var(--text-sidebar-active);
  background: var(--surface-sidebar-active);
  border-left-color: var(--color-primary);
}
.sidebar-item.active svg { opacity: 1; }
.sidebar-sub {
  padding-left: 0;
}
.sidebar-sub .sidebar-item {
  padding-left: 46px;
  font-size: 13px;
  font-weight: 400;
}
.sidebar-divider {
  height: 1px;
  background: var(--border-sidebar);
  margin: 8px 20px;
}
.sidebar-badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--color-primary);
  color: white;
  letter-spacing: 0.04em;
}
.sidebar-badge.new { background: #22C55E; }

/* ---- Main Content ---- */
.main {
  margin-left: var(--sidebar-width);
  margin-top: var(--topbar-height);
  flex: 1;
  min-width: 0;
  display: flex;
}
.content {
  flex: 1;
  padding: 48px 48px 80px;
  max-width: calc(var(--content-max-width) + 96px);
  min-width: 0;
}
.toc-sidebar {
  width: 220px;
  flex-shrink: 0;
  padding: 48px 0 48px 24px;
}

/* ---- TOC ---- */
.toc-wrap {
  position: sticky;
  top: calc(var(--topbar-height) + 24px);
}
.toc-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.toc-list { display: flex; flex-direction: column; gap: 2px; }
.toc-link {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: all var(--transition);
  display: block;
}
.toc-link:hover { color: var(--text-primary); text-decoration: none; }
.toc-link.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: #6C63FF0D;
}
.toc-link.sub { padding-left: 20px; font-size: 12px; }

/* ---- Typography ---- */
.page-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.page-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.page-lead {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 640px;
  margin-bottom: 40px;
}
.section-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
  scroll-margin-top: calc(var(--topbar-height) + 24px);
}
.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
}
.subsection-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  scroll-margin-top: calc(var(--topbar-height) + 24px);
}
.divider {
  height: 1px;
  background: var(--border-color);
  margin: 48px 0;
}
p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }
strong { color: var(--text-primary); font-weight: 600; }

/* ---- Code ---- */
code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-primary-dark);
}
pre {
  background: var(--surface-code);
  border-radius: 12px;
  padding: 24px;
  overflow-x: auto;
  margin-bottom: 24px;
}
pre code {
  font-size: 13px;
  background: none;
  border: none;
  padding: 0;
  color: #E2E8F0;
  line-height: 1.7;
}
.code-block {
  position: relative;
  margin-bottom: 24px;
}
.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #1A2B42;
  border-radius: 12px 12px 0 0;
  padding: 10px 16px;
}
.code-block-header pre {
  border-radius: 0 0 12px 12px;
  margin-bottom: 0;
}
.code-lang {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748B;
  font-family: var(--font-mono);
}
.code-copy-btn {
  font-size: 12px;
  color: #64748B;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all var(--transition);
  font-family: var(--font-sans);
}
.code-copy-btn:hover { color: #94A3B8; background: #1F3354; }
.code-copy-btn svg { width: 14px; height: 14px; }

/* ---- Cards / Grids ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.card p { font-size: 13px; color: var(--text-secondary); line-height: 1.55; margin-bottom: 0; }
.card-link {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 14px;
  text-decoration: none;
}
.card-link:hover { text-decoration: underline; }
.card-link svg { width: 14px; height: 14px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover { background: var(--color-primary-dark); color: white; text-decoration: none; }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: white; text-decoration: none; }
.btn-ghost {
  background: var(--surface-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}
.btn-ghost:hover { background: var(--border-color); text-decoration: none; }
.btn svg { width: 16px; height: 16px; }
.btn-group { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }

/* ---- Color Swatches ---- */
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.swatch {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.swatch-color {
  height: 72px;
}
.swatch-info {
  padding: 10px;
  background: var(--surface-bg);
}
.swatch-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  display: block;
}
.swatch-hex {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  display: block;
}

/* ---- Type Scale ---- */
.type-scale { display: flex; flex-direction: column; gap: 0; }
.type-row {
  display: flex;
  align-items: baseline;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}
.type-row:last-child { border-bottom: none; }
.type-meta {
  width: 160px;
  flex-shrink: 0;
}
.type-label { font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }
.type-spec { font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); margin-top: 2px; }
.type-sample { flex: 1; color: var(--text-primary); }

/* ---- Spacing Scale ---- */
.spacing-scale { display: flex; flex-direction: column; gap: 12px; }
.spacing-row { display: flex; align-items: center; gap: 20px; }
.spacing-bar-wrap { flex: 1; height: 24px; background: var(--surface-card); border-radius: 4px; overflow: hidden; }
.spacing-bar { height: 100%; background: linear-gradient(90deg, #6C63FF44, #6C63FF); border-radius: 4px; }
.spacing-label { width: 60px; font-size: 12px; color: var(--text-muted); text-align: right; font-family: var(--font-mono); }
.spacing-value { width: 80px; font-size: 12px; font-weight: 600; color: var(--text-primary); font-family: var(--font-mono); }

/* ---- Component Preview ---- */
.component-preview {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 8px;
}
.component-preview-inner {
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  min-height: 140px;
}
.component-preview-dark { background: #0F1B2D; }
.component-preview-label {
  padding: 8px 16px;
  background: var(--surface-bg);
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ---- Demo Components ---- */
.demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  font-family: var(--font-sans);
  transition: all var(--transition);
}
.demo-btn-primary { background: #6C63FF; color: white; }
.demo-btn-primary:hover { background: #4F46E5; }
.demo-btn-secondary { background: white; color: #6C63FF; border-color: #6C63FF; }
.demo-btn-secondary:hover { background: #6C63FF10; }
.demo-btn-ghost { background: transparent; color: #4B5563; border-color: #E5E7EB; }
.demo-btn-ghost:hover { background: #F3F4F6; }
.demo-btn-danger { background: #EF4444; color: white; }
.demo-btn-danger:hover { background: #DC2626; }

.demo-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.demo-badge-primary { background: #6C63FF22; color: #6C63FF; border: 1px solid #6C63FF44; }
.demo-badge-success { background: #22C55E22; color: #16A34A; border: 1px solid #22C55E44; }
.demo-badge-warning { background: #F59E0B22; color: #D97706; border: 1px solid #F59E0B44; }
.demo-badge-danger { background: #EF444422; color: #DC2626; border: 1px solid #EF444444; }

.demo-input {
  padding: 10px 14px;
  border: 1.5px solid #E5E7EB;
  border-radius: 8px;
  font-size: 14px;
  font-family: var(--font-sans);
  color: #0F1B2D;
  background: white;
  outline: none;
  transition: border-color var(--transition);
  width: 220px;
}
.demo-input:focus { border-color: #6C63FF; box-shadow: 0 0 0 3px #6C63FF1A; }

.demo-toggle {
  width: 44px;
  height: 24px;
  background: #6C63FF;
  border-radius: 999px;
  cursor: pointer;
  position: relative;
  transition: background var(--transition);
}
.demo-toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  transition: right var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.demo-toggle.off { background: #E5E7EB; }
.demo-toggle.off::after { right: auto; left: 3px; }

.demo-card {
  background: white;
  border: 1px solid #E5E7EB;
  border-radius: 12px;
  padding: 20px;
  width: 220px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.demo-card h4 { font-size: 14px; font-weight: 700; color: #0F1B2D; margin-bottom: 6px; }
.demo-card p { font-size: 13px; color: #6B7280; line-height: 1.5; margin-bottom: 0; }

.demo-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: white;
}
.demo-avatar-sm { width: 28px; height: 28px; font-size: 10px; }
.demo-avatar-lg { width: 56px; height: 56px; font-size: 20px; }

/* ---- Tables ---- */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}
.doc-table th {
  text-align: left;
  padding: 10px 16px;
  background: var(--surface-card);
  border-bottom: 2px solid var(--border-color);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.doc-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  vertical-align: top;
}
.doc-table td:first-child { color: var(--text-primary); font-weight: 600; }
.doc-table tr:last-child td { border-bottom: none; }
.doc-table td code { font-size: 12px; }

/* ---- Callout ---- */
.callout {
  display: flex;
  gap: 14px;
  padding: 16px 20px;
  border-radius: 10px;
  margin-bottom: 24px;
  border: 1px solid;
}
.callout-icon { flex-shrink: 0; width: 20px; height: 20px; margin-top: 1px; }
.callout-body { flex: 1; }
.callout-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.callout-text { font-size: 13px; line-height: 1.6; margin-bottom: 0; }
.callout-info { background: #6C63FF0D; border-color: #6C63FF33; }
.callout-info .callout-title { color: var(--color-primary-dark); }
.callout-info .callout-icon { color: var(--color-primary); }
.callout-info .callout-text { color: #3730A3; }
.callout-warning { background: #F59E0B0D; border-color: #F59E0B33; }
.callout-warning .callout-title { color: #92400E; }
.callout-warning .callout-icon { color: #F59E0B; }
.callout-warning .callout-text { color: #78350F; }
.callout-success { background: #22C55E0D; border-color: #22C55E33; }
.callout-success .callout-title { color: #14532D; }
.callout-success .callout-icon { color: #22C55E; }
.callout-success .callout-text { color: #15803D; }

/* ---- Steps ---- */
.steps { display: flex; flex-direction: column; gap: 0; margin-bottom: 32px; }
.step {
  display: flex;
  gap: 20px;
  padding-bottom: 32px;
  position: relative;
}
.step::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}
.step:last-child::before { display: none; }
.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
  z-index: 1;
}
.step-content { flex: 1; padding-top: 8px; }
.step-title { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.step-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 0; }

/* ---- Hero (Homepage) ---- */
.hero {
  padding: 80px 0 60px;
  max-width: var(--content-max-width);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: #6C63FF0F;
  border: 1px solid #6C63FF33;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.hero h1 span {
  background: linear-gradient(135deg, #6C63FF, #00D4AA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 540px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats {
  display: flex;
  gap: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}
.hero-stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  display: block;
}
.hero-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; display: block; }

/* ---- Feature Grid (Homepage) ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.feature-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 28px;
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px #6C63FF22, var(--shadow-md);
  transform: translateY(-2px);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-card h3 { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 0; }

/* ---- Product Bands (Homepage) ---- */
.product-band {
  display: flex;
  gap: 0;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 48px;
}
.product-tab {
  flex: 1;
  padding: 24px;
  border-right: 1px solid var(--border-color);
  transition: all var(--transition);
  cursor: pointer;
}
.product-tab:last-child { border-right: none; }
.product-tab:hover { background: var(--surface-card); }
.product-tab-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-bottom: 12px;
}
.product-tab h4 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.product-tab p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 0; }

/* ---- Changelog / Versions ---- */
.changelog { display: flex; flex-direction: column; gap: 0; }
.changelog-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}
.changelog-item:last-child { border-bottom: none; }
.changelog-version {
  width: 70px;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  font-family: var(--font-mono);
  padding-top: 2px;
}
.changelog-content h4 { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.changelog-content p { font-size: 13px; color: var(--text-secondary); margin-bottom: 0; }
.changelog-tag {
  display: inline-flex;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: 8px;
  vertical-align: middle;
}
.changelog-tag.new-tag { background: #22C55E22; color: #15803D; border: 1px solid #22C55E44; }
.changelog-tag.fix-tag { background: #F59E0B22; color: #D97706; border: 1px solid #F59E0B44; }

/* ---- Responsive ---- */
@media (max-width: 1200px) {
  .toc-sidebar { display: none; }
}
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 36px; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform var(--transition); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .topbar-left { width: auto; }
  .topbar-center { display: none; }
  .content { padding: 24px 20px 48px; }
  .feature-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .product-band { flex-direction: column; }
  .product-tab { border-right: none; border-bottom: 1px solid var(--border-color); }
}

/* ---- Mobile Menu Toggle ---- */
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  margin-right: 8px;
}
.menu-toggle svg { width: 18px; height: 18px; color: var(--text-primary); }
@media (max-width: 768px) { .menu-toggle { display: flex; } }

/* ---- Mobile Overlay ---- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 85;
}
.sidebar-overlay.visible { display: block; }

/* ---- Tabs (content tabs) ---- */
.content-tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border-color); margin-bottom: 24px; }
.content-tab {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.content-tab:hover { color: var(--text-primary); }
.content-tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---- Figma Embed Placeholder ---- */
.figma-embed {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--surface-card);
  padding: 48px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.figma-embed-icon { width: 48px; height: 48px; color: #F24E1E; }
.figma-embed h4 { font-size: 18px; font-weight: 700; color: var(--text-primary); }
.figma-embed p { font-size: 14px; color: var(--text-secondary); max-width: 400px; margin-bottom: 0; }

/* ---- Scrollbar global ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #94A3B8; }