/*
  Smooth theme transitions — color properties only. No layout shift.
  Every element fades its own colors when data-theme changes.
*/
*, *::before, *::after {
  transition: color 0.4s ease-in-out, background-color 0.4s ease-in-out, border-color 0.4s ease-in-out;
}

/* High-contrast surfaces — longer duration to match perceived speed of text */
pre, .api-snippet, .api-snippet pre, .sidebar, .param-table td,
.info-card, .rule-card, .encoding-block, .install-card, .side-card,
.cmd-block, .env-table {
  transition-duration: 0.7s;
}

/* View Transitions — smooth crossfade between doc pages */
::view-transition-old(root) {
  animation: vt-fade-out .25s cubic-bezier(.4,0,.2,1) both;
}
::view-transition-new(root) {
  animation: vt-fade-in .4s cubic-bezier(.4,0,.2,1) .15s both;
}
@keyframes vt-fade-out {
  to { opacity: 0; }
}
@keyframes vt-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   SentimenTrader — Backtest API Reference
   Stylesheet v4.1

   Sections:
   1.  Custom Properties (Dark + Light themes)
   2.  Reset & Base
   3.  Sidebar Navigation
   4.  Main Content Layout
   5.  Section Headings
   6.  API Snippets (Code Blocks + Tabs)
   7.  Parameter Tables
   8.  Info Cards (Tip / Warning / Info)
   9.  Rule & Signal Cards
   10. Condition Code Chips
   11. Encoding Block
   12. Diff Table
   13. Inline Code
   14. Theme Toggle
   15. Responsive
   16. Schema Tree
   17. Copy Button
   18. HTTP Status Badges
   19. Param Group Headers
   20. Collapsible Sections
   21. Sidebar Search
   22. Back to Top
   23. Scroll Progress Bar
   24. Focus Visible
   25. Code Language Label
   26. Param Tooltip
   27. Print
   ============================================================ */

/* ----------------------------------------------------------
   1. Custom Properties
   ---------------------------------------------------------- */
:root {
  /* Surface */
  --bg-base: #09090b;
  --bg-surface: #111113;
  --bg-elevated: #18181b;
  --bg-hover: #1e1e22;
  --bg-active: #27272a;

  /* Borders */
  --border-dim: rgba(255,255,255,0.06);
  --border-default: rgba(255,255,255,0.1);
  --border-strong: rgba(255,255,255,0.16);

  /* Text */
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-dim: #52525b;

  /* Accent */
  --accent: #3b82f6;
  --accent-bright: #60a5fa;
  --accent-dim: rgba(59,130,246,0.15);

  /* Semantic colors */
  --green: #22c55e;
  --green-dim: rgba(34,197,94,0.15);
  --orange: #f59e0b;
  --orange-dim: rgba(245,158,11,0.15);
  --red: #ef4444;
  --red-dim: rgba(239,68,68,0.15);
  --purple: #a855f7;
  --purple-dim: rgba(168,85,247,0.15);

  /* Code */
  --code-bg: var(--bg-elevated);
  --inline-code-bg: var(--bg-active);
  --inline-code-border: var(--border-dim);
  --snippet-bar-bg: rgba(255,255,255,0.03);
  --header-bg: rgba(9,9,11,0.85);

  /* Syntax tokens */
  --tk-method: var(--orange);
  --tk-url: var(--accent-bright);
  --tk-key: #86efac;
  --tk-val: #fdba74;
  --tk-string: #fbbf24;
  --tk-number: #c084fc;
  --tk-bool: #67e8f9;
  --tk-comment: var(--text-dim);
  --tk-enc-val: var(--green);
  --tk-default: var(--green);

  /* Typography */
  --font-sans: 'Inter', 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Geist Mono', ui-monospace, SFMono-Regular, monospace;

  /* Transitions */
  --ease-out: cubic-bezier(.4,0,.2,1);

  /* Spacing */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --sidebar-width: 260px;
}

/* Light theme overrides */
[data-theme="light"] {
  --bg-base: #fff;
  --bg-surface: #f8f9fa;
  --bg-elevated: #f1f3f5;
  --bg-hover: #e9ecef;
  --bg-active: #dee2e6;

  --border-dim: rgba(0,0,0,.08);
  --border-default: rgba(0,0,0,.12);
  --border-strong: rgba(0,0,0,.18);

  --text-primary: #1a1a2e;
  --text-secondary: #495057;
  --text-muted: #868e96;
  --text-dim: #adb5bd;

  --accent: #2563eb;
  --accent-bright: #1d4ed8;
  --accent-dim: rgba(37,99,235,.1);

  --green: #16a34a;
  --green-dim: rgba(22,163,74,.1);
  --orange: #d97706;
  --orange-dim: rgba(217,119,6,.1);
  --red: #dc2626;
  --red-dim: rgba(220,38,38,.1);
  --purple: #7c3aed;
  --purple-dim: rgba(124,58,237,.1);

  --code-bg: #f8f9fa;
  --inline-code-bg: #e9ecef;
  --inline-code-border: rgba(0,0,0,.08);
  --snippet-bar-bg: rgba(0,0,0,.03);
  --header-bg: rgba(255,255,255,.85);

  --tk-method: #c2410c;
  --tk-url: #1d4ed8;
  --tk-key: #15803d;
  --tk-val: #b45309;
  --tk-string: #a16207;
  --tk-number: #7c3aed;
  --tk-bool: #0e7490;
  --tk-comment: #94a3b8;
  --tk-enc-val: #15803d;
  --tk-default: #16a34a;
}

/* ----------------------------------------------------------
   2. Docs Top Bar + Nav Tabs
   ---------------------------------------------------------- */
/* Top bar — Claude-exact: left(logo+nav) / right(search+theme) */
/* Layer 1: Top bar — logo left, search center, theme right */
.docs-topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 110;
  display: flex; align-items: center;
  height: 48px; padding: 0 20px;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
}
.docs-topbar-brand {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600;
  color: var(--text-primary);
  text-decoration: none; flex-shrink: 0;
}
.docs-topbar-brand-icon {
  width: 22px; height: 22px; border-radius: 5px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  flex-shrink: 0;
}

/* Layer 2: Nav tabs — below topbar */
.docs-navtabs {
  position: fixed; top: 48px; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center;
  height: 40px; padding: 0 20px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-dim);
}
.docs-navtab {
  display: inline-flex; align-items: center;
  height: 100%; padding: 0 16px;
  font-size: 13px; font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .2s var(--ease-out);
}
.docs-navtab:hover { color: var(--text-primary); }
.docs-navtab.active { color: var(--text-primary); border-bottom-color: var(--accent); }

/* Sliding indicator — animates from left on page load */
.docs-navtabs-indicator {
  position: absolute; bottom: 0; height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: left .35s cubic-bezier(.4,0,.2,1), width .35s cubic-bezier(.4,0,.2,1);
}
.docs-navtabs-indicator.animate-in {
  animation: indicator-slide-in .4s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes indicator-slide-in {
  from { transform: scaleX(0); opacity: 0; }
  to   { transform: scaleX(1); opacity: 1; }
}

/* Search button — Claude-exact: rounded-xl, h-9, subtle */
.docs-search-btn {
  display: inline-flex; align-items: center; gap: 10px;
  width: 260px; height: 32px; padding: 0 12px;
  background: var(--bg-hover);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-family: var(--font-sans); font-size: 13px;
  color: var(--text-dim);
  white-space: nowrap; flex-shrink: 0;
  transition: border-color .15s;
  margin: 0 auto;
}
.docs-search-btn:hover {
  border-color: var(--border-default);
  color: var(--text-secondary);
}
.docs-search-btn kbd {
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  color: var(--text-dim); background: var(--bg-active);
  border: 1px solid var(--border-dim); border-radius: 3px;
  padding: 1px 5px; margin-left: auto;
}

/* Nav tabs — horizontal grouping below topbar */

/* Sidebar — offset below sticky topbar + navtabs */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-y: scroll;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-base);
  
}

a { color: var(--accent-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

pre, table, td, th, tr, li, ul, ol, h3, h4, p, a, span { background: transparent; }
code { font-family: var(--font-mono); font-size: .85em; }

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

:focus:not(:focus-visible) { outline: none; }

/* ----------------------------------------------------------
   3. Sidebar Navigation
   ---------------------------------------------------------- */
.sidebar {
  position: fixed;
  top: 88px; left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - 88px);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-dim);
  display: flex;
  flex-direction: column;
  z-index: 90;
  overflow-y: auto;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 4px; }

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border-dim);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-brand-icon {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: #fff;
}

.sidebar-brand-text { font-size: 13px; font-weight: 600; letter-spacing: -.01em; color: var(--text-primary); }
.sidebar-brand-tag { font-size: 9px; font-weight: 500; text-transform: uppercase; letter-spacing: .08em; color: var(--text-muted); margin-top: 2px; }

.sidebar-section { padding: 8px 12px 8px; margin-bottom: 6px; }
.sidebar-section-label { font-size: 11px; font-weight: 500; color: var(--text-dim); padding: 0 8px 6px; letter-spacing: .02em; }

.sidebar-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 12px; border-radius: var(--radius-sm);
  font-size: 12.5px; color: var(--text-secondary);
  cursor: pointer; /* uses global * transition */ text-decoration: none;
}

.sidebar-item:hover { background: var(--bg-hover); color: var(--text-primary); text-decoration: none; }
.sidebar-item.active { background: var(--accent-dim); color: var(--accent-bright); }
.sidebar-item.indent { padding-left: 28px; font-size: 11.5px; }

.sidebar-item .badge { font-size: 9px; font-weight: 600; padding: 1px 6px; border-radius: 10px; margin-left: auto; }

.badge-green { background: var(--green-dim); color: var(--green); }
.badge-purple { background: var(--purple-dim); color: var(--purple); }
.badge-blue { background: var(--accent-dim); color: var(--accent-bright); }

/* ----------------------------------------------------------
/* ----------------------------------------------------------
   4. Right-Side TOC Panel
   ---------------------------------------------------------- */
.toc-panel {
  position: fixed;
  top: 112px;
  right: max(20px, calc((100vw - var(--sidebar-width) - 780px) / 2 - 200px));
  width: 180px;
  max-height: calc(100vh - 132px);
  overflow-y: auto;
  padding: 16px 0;
  z-index: 80;
}

.toc-title {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  padding: 0 12px 8px;
  margin-bottom: 4px;
}

.toc-item {
  display: block;
  padding: 5px 12px;
  font-size: 11.5px;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
  cursor: pointer;
}

.toc-item:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
  text-decoration: none;
}

.toc-item.active {
  color: var(--accent-bright);
  border-left-color: var(--accent);
  background: var(--accent-dim);
}

.toc-item.indent {
  padding-left: 24px;
  font-size: 11px;
}

/* Paged sections — show one section at a time on Tools API page */
.section[data-page] { display: none; }
.section.active-page { display: block; animation: pageFadeIn .25s ease; padding-top: 24px; }

/* Page title bar for paged sections */
.page-breadcrumb {
  font-size: 12px; font-weight: 500; color: var(--text-muted);
  margin-bottom: 4px; letter-spacing: .02em;
}
.page-breadcrumb span { color: var(--text-secondary); }
.section.active-page > .section-title:first-child,
.section.active-page > h1:first-child {
  font-size: 32px; font-weight: 700; margin-bottom: 20px;
}
@keyframes pageFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ----------------------------------------------------------
   5. Main Content Layout
   ---------------------------------------------------------- */

.main-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
  padding: 12px 32px;
  display: flex; align-items: center; justify-content: space-between;
}

.main-header-breadcrumb { font-size: 12px; color: var(--text-muted); }
.main-header-breadcrumb span { color: var(--text-secondary); }

.main-header-actions { display: flex; gap: 8px; }

.header-btn {
  padding: 5px 12px; border-radius: var(--radius-sm);
  font-size: 11px; font-weight: 500;
  border: 1px solid var(--border-default);
  color: var(--text-secondary); background: transparent;
  cursor: pointer; /* uses global * transition */
}

.header-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.header-btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }

.main { margin-left: var(--sidebar-width); margin-top: 88px; flex: 1; min-width: 0; }
.main-content { max-width: 780px; margin: 0 auto; padding: 40px 32px 80px; }

/* Page-load entrance — main area + sidebar fade in */
@keyframes pageMainIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.main {
  animation: pageMainIn .6s .05s cubic-bezier(.4,0,.2,1) both;
}
@keyframes pageSidebarIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.sidebar {
  animation: pageSidebarIn .5s .08s cubic-bezier(.4,0,.2,1) both;
}

/* ----------------------------------------------------------
   5. Section Headings
   ---------------------------------------------------------- */
.section { margin-bottom: 88px; scroll-margin-top: 100px; }

.section-number {
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .12em;
  color: var(--accent-bright); margin-bottom: 8px;
}

.section-title {
  font-size: 28px; font-weight: 700;
  letter-spacing: -.02em; line-height: 1.2; margin-bottom: 8px;
}

.section-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.7; max-width: 640px; }

/* Readable content typography */
.main-content p { line-height: 1.75; margin-bottom: 12px; }
.main-content ul, .main-content ol { padding-left: 20px; margin-bottom: 16px; }
.main-content li { line-height: 1.7; margin-bottom: 6px; }
.main-content li::marker { color: var(--text-muted); }
.main-content h3 { font-size: 18px; font-weight: 600; margin: 32px 0 12px; letter-spacing: -.01em; }
.main-content h4 { font-size: 15px; font-weight: 600; margin: 24px 0 8px; color: var(--text-primary); }

/* ----------------------------------------------------------
   6. API Snippets (Code Blocks + Tabs)
   ---------------------------------------------------------- */
.endpoint-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }

.method-badge {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  padding: 4px 10px; border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.method-post { background: var(--green-dim); color: var(--green); }
.method-get { background: var(--accent-dim); color: var(--accent-bright); }

.endpoint-url {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-primary);
  background: var(--bg-elevated); padding: 6px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-dim); flex: 1;
}

.api-snippet {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-dim);
  overflow: hidden; margin: 16px 0;
}

.api-snippet-bar {
  background: var(--snippet-bar-bg);
  border-bottom: 1px solid var(--border-dim);
  padding: 0 16px; display: flex; align-items: center; height: 38px;
}

.api-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 5px; }
.api-dot-red { background: #ff5f57; }
.api-dot-yellow { background: #febc2e; }
.api-dot-green { background: #28c840; }

.api-tabs {
  display: flex; gap: 2px; margin-left: 12px;
  background: var(--bg-active);
  border-radius: 10px;
  padding: 3px;
  position: relative;
  isolation: isolate;
}

.api-tab {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  color: var(--text-dim); padding: 5px 14px;
  display: flex; align-items: center; cursor: pointer;
  border: none; border-radius: 8px;
  background: none; transition: color .2s var(--ease-out);
  position: relative; z-index: 1;
}

.api-tab:hover { color: var(--text-secondary); }

.api-tab.active {
  color: var(--text-primary);
  background: var(--bg-base);
  box-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

.api-pane { display: none; }
.api-pane.active { display: block; }

.api-snippet pre {
  margin: 0; padding: 16px 20px;
  font-family: var(--font-mono); font-size: 12px; line-height: 1.9;
  overflow-x: auto; color: var(--text-secondary);
  background: transparent;
}

/* Syntax tokens */
.token-method  { color: var(--tk-method); font-weight: 500; }
.token-url     { color: var(--tk-url); }
.token-param   { color: var(--text-dim); }
.token-key     { color: var(--tk-key); }
.token-val     { color: var(--tk-val); }
.token-comment { color: var(--tk-comment); font-style: italic; }
.token-string  { color: var(--tk-string); }
.token-number  { color: var(--tk-number); }
.token-bool    { color: var(--tk-bool); }

/* ----------------------------------------------------------
   7. Parameter Tables
   ---------------------------------------------------------- */
.param-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13px; }

.param-table th {
  text-align: left; font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-dim); padding: 8px 12px;
  border-bottom: 1px solid var(--border-default);
}

.param-table td { padding: 10px 12px; border-bottom: 1px solid var(--border-dim); vertical-align: top; }
.param-table tr { /* uses global * transition */ }
.param-table tr:hover td { background: rgba(255,255,255,.02); /* uses global * transition */ }
[data-theme="light"] .param-table tr:hover td { background: rgba(0,0,0,.02); }

.param-name { font-family: var(--font-mono); font-size: 12px; font-weight: 500; color: var(--accent-bright); white-space: nowrap; }

.param-type { font-family: var(--font-mono); font-size: 11px; color: var(--purple); background: var(--purple-dim); padding: 1px 6px; border-radius: 4px; white-space: nowrap; }

.param-required { font-size: 9px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--red); background: var(--red-dim); padding: 1px 5px; border-radius: 4px; }
.param-optional { font-size: 9px; font-weight: 500; color: var(--text-dim); background: var(--bg-active); padding: 1px 5px; border-radius: 4px; }

.param-default { font-family: var(--font-mono); font-size: 11px; color: var(--tk-default); }

/* ----------------------------------------------------------
   8. Info Cards
   ---------------------------------------------------------- */
.info-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 16px 20px; margin: 16px 0;
}

.info-card-title { font-size: 13px; font-weight: 600; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.info-card-body { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

.info-card.warning { border-left: 3px solid var(--orange); }
.info-card.tip     { border-left: 3px solid var(--green); }
.info-card.info    { border-left: 3px solid var(--accent); }

/* ----------------------------------------------------------
   9. Rule & Signal Cards
   ---------------------------------------------------------- */
.rule-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }

.rule-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: background .2s ease, transform .2s ease, border-color .2s ease;
}

.rule-card:hover { border-color: var(--border-default); background: var(--bg-hover); transform: translateY(-1px); }
.rule-card-name { font-size: 14px; font-weight: 600; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.rule-card-relation { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); background: var(--bg-active); padding: 1px 6px; border-radius: 4px; }
.rule-card-desc { font-size: 12.5px; color: var(--text-secondary); line-height: 1.6; margin-top: 6px; }

.signal-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin: 16px 0; }

.signal-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: background .2s ease, border-color .2s ease;
}
.signal-card:hover { border-color: var(--border-default); }

.signal-card-type { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; }
.signal-card-name { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.signal-card-desc { font-size: 12px; color: var(--text-secondary); line-height: 1.6; }
.signal-card-eo { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border-dim); font-family: var(--font-mono); font-size: 11px; }
.signal-card-eo span { color: var(--text-muted); }
.signal-card-eo code { color: var(--green); }

/* ----------------------------------------------------------
   10. Condition Code Chips
   ---------------------------------------------------------- */
.code-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 8px; margin: 16px 0; }

.code-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  transition: background .2s ease, border-color .2s ease;
}

.code-chip:hover { border-color: var(--border-default); background: var(--bg-hover); }

.code-chip-num {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  color: var(--accent-bright); background: var(--accent-dim);
  width: 24px; height: 24px; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
}

.code-chip-name { font-weight: 500; color: var(--text-primary); }

.code-chip-tag {
  font-size: 9px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em;
  margin-left: auto; padding: 1px 6px; border-radius: 4px;
}

.tag-main     { background: var(--green-dim);  color: var(--green); }
.tag-qualifier { background: var(--purple-dim); color: var(--purple); }
.tag-special  { background: var(--orange-dim); color: var(--orange); }

/* ----------------------------------------------------------
   11. Encoding Block
   ---------------------------------------------------------- */
.encoding-block {
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 20px; margin: 16px 0;
  font-family: var(--font-mono); font-size: 13px; line-height: 2;
}

.enc-type  { color: var(--accent-bright); font-weight: 600; }
.enc-sep   { color: var(--text-dim); }
.enc-label { color: var(--text-muted); }
.enc-value { color: var(--tk-enc-val); }

/* ----------------------------------------------------------
   12. Inline Code
   ---------------------------------------------------------- */
.inline-code {
  font-family: var(--font-mono); font-size: .85em;
  background: var(--inline-code-bg);
  color: var(--accent-bright);
  padding: 1px 6px; border-radius: 4px;
  border: 1px solid var(--inline-code-border);
}

/* ----------------------------------------------------------
   14. Theme Toggle
   ---------------------------------------------------------- */
.theme-toggle {
  position: relative; width: 36px; height: 20px;
  border-radius: 10px;
  background: var(--bg-active);
  border: 1px solid var(--border-default);
  cursor: pointer; transition: transform 0.15s ease; /* color via global * rule */
  padding: 0;
}
.theme-toggle:active {
  transform: scale(0.92);
}
.theme-toggle::after {
  content: ''; position: absolute;
  top: 2px; left: 2px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--text-muted);
  transition: left 0.3s ease, background-color 0.4s ease-in-out;
}

[data-theme="light"] .theme-toggle { background: var(--accent-dim); }
[data-theme="light"] .theme-toggle::after { left: 18px; background: var(--accent); }

/* ----------------------------------------------------------
   15. Responsive
   ---------------------------------------------------------- */
/* Mobile nav (hidden on desktop) */
.mobile-nav {
  display: none;
  align-items: center; justify-content: space-between;
  padding: 14px 20px;
  background: var(--header-bg); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
  position: sticky; top: 0; z-index: 45;
}
.mobile-nav-logo { font-family: var(--font-sans); font-weight: 600; font-size: 13px; }
.mobile-nav-links {
  display: flex; gap: 16px; align-items: center;
  font-family: var(--font-mono); font-size: 11px; color: var(--text-muted);
}
.mobile-nav-links a { color: var(--text-muted); text-decoration: none; }
.mobile-nav-links a:hover { color: var(--text-primary); }

@media (max-width: 1024px) {
  .sidebar { display: none; }
  .toc-panel { display: none; }
  .main { margin-left: 0; }
  .mobile-nav { display: flex; }
  .main-header { display: none; }
  .scroll-progress { left: 0; }
  .rule-grid { grid-template-columns: 1fr; }
  .signal-grid { grid-template-columns: 1fr; }
  .code-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .main-content { padding: 24px 16px 60px; }
  .main-header { padding: 10px 16px; }
  .section-title { font-size: 22px; }
  .code-grid { grid-template-columns: 1fr; }
  .endpoint-header { flex-wrap: wrap; }
  .endpoint-url { font-size: 11px; }
}

/* ----------------------------------------------------------
   16. Schema Tree
   ---------------------------------------------------------- */
.schema-tree {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 2;
  color: var(--text-secondary);
}

.schema-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 1px 0;
}

.schema-key { color: var(--tk-key); font-weight: 500; }
.schema-type { font-size: 10px; font-weight: 600; padding: 1px 5px; border-radius: 4px; text-transform: uppercase; letter-spacing: .04em; }
.schema-type-string { background: var(--green-dim); color: var(--green); }
.schema-type-number { background: var(--purple-dim); color: var(--purple); }
.schema-type-object { background: var(--accent-dim); color: var(--accent-bright); }
.schema-type-array  { background: var(--orange-dim); color: var(--orange); }
.schema-type-bool   { background: rgba(103,232,249,.15); color: #67e8f9; }
.schema-desc { color: var(--text-muted); font-size: 11px; margin-left: auto; padding-left: 16px; }
.schema-indent { padding-left: 24px; }
.schema-indent-2 { padding-left: 48px; }

/* ----------------------------------------------------------
   17. Copy Button
   ---------------------------------------------------------- */
.api-copy-btn {
  position: absolute;
  top: 8px; right: 8px;
  padding: 4px 10px;
  font-family: var(--font-sans);
  font-size: 11px; font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-active);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  /* uses global * transition */
  z-index: 2;
}

.api-snippet:hover .api-copy-btn { opacity: 1; }
.api-copy-btn:hover { color: var(--text-primary); background: var(--bg-hover); }
.api-copy-btn.copied { color: var(--green); border-color: var(--green); }

/* ----------------------------------------------------------
   18. HTTP Status Badges
   ---------------------------------------------------------- */
.status-badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  padding: 2px 8px; border-radius: 4px;
  margin-right: 6px;
}

.status-2xx { background: var(--green-dim); color: var(--green); }
.status-4xx { background: var(--orange-dim); color: var(--orange); }
.status-5xx { background: var(--red-dim); color: var(--red); }

/* ----------------------------------------------------------
   19. Param Group Headers
   ---------------------------------------------------------- */
.param-group-header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0 6px;
  margin-top: 8px;
}

.param-group-header:first-child { margin-top: 0; }

.param-group-label {
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-muted);
  white-space: nowrap;
}

.param-group-line {
  flex: 1; height: 1px;
  background: var(--border-dim);
}

/* ----------------------------------------------------------
   20. Collapsible Sections
   ---------------------------------------------------------- */
.collapse-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  font-size: 12px; font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  cursor: pointer;
  /* uses global * transition */
  margin-bottom: 12px;
}

.collapse-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

.collapse-toggle .chevron {
  display: inline-block;
  transition: transform .2s;
  font-size: 10px;
}

.collapse-toggle.open .chevron { transform: rotate(90deg); }

.collapse-.collapse-body { overflow: hidden; transition: max-height .3s ease; }
.collapse-.collapse-body.collapsed { max-height: 0 !important; }

/* ----------------------------------------------------------
   21. Sidebar Search
   ---------------------------------------------------------- */
.sidebar-search {
  padding: 12px 16px 8px;
  border-bottom: 1px solid var(--border-dim);
}

.sidebar-search-input {
  width: 100%;
  padding: 7px 10px 7px 30px;
  font-size: 12px;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-hover);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  outline: none;
  /* uses global * transition */
}

.sidebar-search-input::placeholder { color: var(--text-dim); }
.sidebar-search-input:focus { border-color: var(--accent); background: var(--bg-base); }

.sidebar-search-icon {
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 12px;
  pointer-events: none;
}

.sidebar-search-wrap { position: relative; }

.sidebar-item.hidden { display: none; }
.sidebar-section.hidden { display: none; }

/* ----------------------------------------------------------
   22. Back to Top
   ---------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent);
  color: #fff;
  border: none; border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(0,0,0,.3);
  opacity: 0;
  transform: translateY(16px);
  /* uses global * transition */
  z-index: 200;
  pointer-events: none;
}

.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--accent-bright); transform: translateY(-2px); }

[data-theme="light"] .back-to-top { box-shadow: 0 4px 12px rgba(0,0,0,.12); }

/* ----------------------------------------------------------
   23. Scroll Progress Bar
   ---------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0; left: var(--sidebar-width); right: 0;
  height: 3px;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 60;
  transition: none;
}

[data-theme="light"] .scroll-progress { opacity: .7; }

/* ----------------------------------------------------------
   22. Focus Visible
   ---------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.api-tab:focus-visible,
.header-btn:focus-visible,
.collapse-toggle:focus-visible,
.sidebar-search-input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

/* ----------------------------------------------------------
   25. Code Language Label
   ---------------------------------------------------------- */
.code-lang-label {
  position: absolute;
  top: 8px; right: 60px;
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .06em;
  pointer-events: none;
}

/* ----------------------------------------------------------
   26. Param Tooltip
   ---------------------------------------------------------- */
.param-name-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: help;
}

.param-tooltip-icon {
  font-size: 11px;
  color: var(--text-dim);
  /* uses global * transition */
}

.param-name-wrap:hover .param-tooltip-icon { color: var(--accent-bright); }

.param-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  /* uses global * transition */
  z-index: 300;
  pointer-events: none;
}

.param-name-wrap:hover .param-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

[data-theme="light"] .param-tooltip {
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
}

/* ----------------------------------------------------------
   25. Print
   ---------------------------------------------------------- */
@media print {
  .sidebar, .main-header-actions, .theme-toggle,
  .back-to-top, .scroll-progress, .api-copy-btn,
  .sidebar-search, .code-lang-label { display: none !important; }
  .main { margin-left: 0; }
  body { background: #fff; color: #000; }
  .section { break-inside: avoid; }
  .api-snippet { break-inside: avoid; }
  .info-card { break-inside: avoid; }
  .param-tooltip { display: none !important; }
}

/* ----------------------------------------------------------
   26. Homepage (index.html)
   ---------------------------------------------------------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* Homepage only — fixed canvas layout */
body.home-page {
  width: 100%; height: 100vh; overflow: hidden;
  background: var(--bg-base);
  font-family: var(--font-sans);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#bg-fallback {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
  background: #cfddec;
  transition: opacity 0.8s ease-out;
}
html:not([data-theme="light"]) #bg-fallback {
  background: #002d52;
}

#bg-canvas {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
#bg-canvas canvas { display: block; }

#ui-layer {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 1; pointer-events: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr auto;
  padding: 24px 32px 28px;
}

.interact { pointer-events: auto; }

header {
  grid-column: 1 / -1;
  grid-row: 1;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.75rem; font-weight: 500; color: var(--text-primary);
  text-decoration: none; pointer-events: auto;
}
.logo-icon {
  width: 22px; height: 22px; border-radius: 5px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
}
.controls {
  display: flex; gap: 2rem; align-items: center;
  font-size: 0.75rem; font-family: var(--font-mono);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.controls a, .controls button {
  background: none; border: none; color: var(--text-secondary);
  font-family: inherit; font-size: inherit; cursor: pointer;
  text-transform: uppercase; letter-spacing: 0.05em;
  transition: color 0.3s ease; text-decoration: none; padding: 0;
  position: relative;
}
.controls a:hover, .controls button:hover { color: var(--text-primary); }

#theme-label { transition: opacity 0.15s ease; }

.theme-dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--accent);
  transition: background-color 0.3s var(--ease-out, ease);
  margin-right: 6px; display: inline-block;
  vertical-align: middle;
}
[data-theme="light"] .theme-dot { background: var(--accent-bright); }

.hero {
  grid-column: 1 / -1;
  grid-row: 2;
  align-self: center; justify-self: center;
  display: flex; flex-direction: column;
  align-items: center; text-align: center;
  max-width: 680px; width: 100%;
}
.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(4rem, 10vw, 7.5rem);
  font-weight: 700; line-height: 0.88; letter-spacing: -0.025em;
  margin-bottom: 0.6rem;
  transform: translateX(-2vw);
}
.hero h1 span { display: block; }
.hero h1 .line-2 { color: var(--text-secondary); font-weight: 300; }

.hero-sub {
  font-family: var(--font-mono);
  font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.18em; color: var(--text-muted);
  transform: translateX(3vw);
  margin-bottom: 2.5rem;
}

.install-term {
  pointer-events: auto;
  width: 100%; max-width: 520px; margin-bottom: 1.2rem;
  background: rgba(17,17,19,.85); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md); overflow: hidden; text-align: left;
  position: relative;
  box-shadow: 0 0 0 1px rgba(59,130,246,.03), 0 8px 32px rgba(0,0,0,.3);
  transform: translateX(1.5vw);
}
.install-term-bar {
  padding: 9px 14px; background: rgba(255,255,255,.01);
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; gap: 6px;
}
.install-term-bar .dot { width: 9px; height: 9px; border-radius: 50%; }
.dot-r { background: #ff5f57; } .dot-y { background: #febc2e; } .dot-g { background: #28c840; }
.install-term-bar .tname {
  font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); margin-left: 4px;
}
.install-term-body {
  padding: 18px 20px; font-family: var(--font-mono); font-size: 12px; line-height: 1.95;
  color: var(--text-secondary);
}
.install-term-body .cmt { color: var(--tk-comment); font-style: italic; }
.install-term-body .accent { color: var(--accent-bright); }
.install-term-body .prmpt { color: var(--green); user-select: none; }

.copy-btn {
  position: absolute; top: 8px; right: 10px;
  font-family: var(--font-sans); font-size: 9px; font-weight: 500;
  color: var(--text-muted); background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08); border-radius: 4px;
  padding: 2px 8px; cursor: pointer; transition: background-color .15s cubic-bezier(.4,0,.2,1); opacity: 0;
  text-transform: none; letter-spacing: normal;
}
.install-term:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { color: var(--text-primary); background: rgba(255,255,255,.1); }
.copy-btn.copied { color: var(--green); border-color: var(--green); }

.hero-actions {
  pointer-events: auto;
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
  transform: translateX(1vw);
}
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 24px; border-radius: var(--radius-sm);
  font-size: 0.75rem; font-weight: 500; cursor: pointer;
  text-decoration: none; transition: opacity .15s cubic-bezier(.4,0,.2,1);
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .04em;
  background: none; color: var(--text-secondary); border: 1px solid var(--border-default);
}
.btn:hover { color: var(--text-primary); border-color: var(--border-strong); background: rgba(255,255,255,.03); text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); text-transform: none; letter-spacing: normal; font-family: var(--font-sans); }
.btn-primary:hover { background: var(--accent-bright); border-color: var(--accent-bright); transform: translateY(-1px); }

.footer-info {
  grid-column: 2;
  grid-row: 3;
  align-self: end; justify-self: end;
  text-align: right; font-size: 0.7rem; color: var(--text-dim);
  display: flex; flex-direction: column; gap: 0.3rem;
}
.footer-info a { color: var(--text-muted); text-decoration: none; transition: color .3s; }
.footer-info a:hover { color: var(--text-primary); }

.hero h1, .hero-sub, .install-term, .hero-actions, .footer-info {
  opacity: 0;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.hero h1, .install-term       { transform: translateY(12px); }
.hero-sub, .hero-actions       { transform: translateY(8px); }
.footer-info                   { transform: translateY(4px); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero h1, .hero-sub, .install-term, .hero-actions { transform: none !important; }
}

@media (max-width: 768px) {
  #ui-layer {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto auto;
  }
  .hero h1 { transform: none; font-size: clamp(3rem, 14vw, 4.5rem); }
  .hero-sub { transform: none; margin-top: 1rem; }
  .install-term { transform: none; }
  .hero-actions { transform: none; }
  .footer-info { grid-column: 1; grid-row: 4; justify-self: start; text-align: left; margin-top: 2rem; }
}

/* ----------------------------------------------------------
   27. Skills Install Page (skills-install.html)
   ---------------------------------------------------------- */
body { overflow-x: hidden; }
.main { margin-left: 0; }

/* Hero */
.skills-hero {
  padding: 64px 32px 40px; max-width: 1100px; margin: 0 auto;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px;
}
.skills-hero h1 { font-size: 36px; font-weight: 700; letter-spacing: -.025em; margin-bottom: 8px; }
.skills-hero p { font-size: 15px; color: var(--text-secondary); max-width: 480px; line-height: 1.7; }
.version-tag {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  background: var(--bg-elevated); border: 1px solid var(--border-dim);
  padding: 3px 10px; border-radius: 4px; white-space: nowrap;
}
.docs-entry-btn {
  font-size: 12px; font-weight: 500; color: #fff;
  background: var(--accent); border: none;
  padding: 5px 14px; border-radius: var(--radius-sm);
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background .15s;
}
.docs-entry-btn:hover { background: var(--accent-bright); text-decoration: none; }

.skills-layout { display: grid; grid-template-columns: 1fr 380px; gap: 40px; max-width: 1100px; margin: 0 auto; padding: 0 32px 80px; }

.install-card, .side-card {
  background: var(--bg-surface); border: 1px solid var(--border-dim); border-radius: var(--radius-md);
}
.install-card { overflow: hidden; }
.side-card { padding: 18px 22px; transition: border-color .15s; }
.side-card:hover { border-color: var(--border-default); }
.install-card-header {
  padding: 16px 24px; border-bottom: 1px solid var(--border-dim);
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-base);
}
.install-card-header .dot { width: 8px; height: 8px; border-radius: 50%; }
.install-card-header .dot.r { background: #ff5f57; }
.install-card-header .dot.y { background: #febc2e; }
.install-card-header .dot.g { background: #28c840; }
.install-card-header .title {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  margin-left: 4px;
}
.install-card-.install-card-body { padding: 32px 32px 24px; }

.step { position: relative; padding-left: 40px; margin-bottom: 32px; }
.step:last-child { margin-bottom: 0; }
.step-num {
  position: absolute; left: 0; top: 2px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-dim); color: var(--accent-bright);
  font-size: 12px; font-weight: 600; font-family: var(--font-mono);
  display: flex; align-items: center; justify-content: center;
}
.step::before {
  content: ''; position: absolute; left: 12px; top: 32px; bottom: -36px;
  width: 1px; background: var(--border-dim);
}
.step:last-child::before { display: none; }
.step-label { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.step-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 10px; }

.skills-cmd-block {
  background: var(--bg-base); border: 1px solid var(--border-dim); border-radius: var(--radius-sm);
  padding: 12px 16px; font-family: var(--font-mono); font-size: 12px; line-height: 1.8;
  color: var(--text-secondary); overflow-x: auto; position: relative;
}
.skills-cmd-block .copy-btn {
  position: absolute; top: 8px; right: 10px;
  font-family: var(--font-sans); font-size: 10px; font-weight: 500;
  color: var(--text-muted); background: var(--bg-elevated);
  border: 1px solid var(--border-dim); border-radius: 4px;
  padding: 2px 8px; cursor: pointer; transition: background-color .15s cubic-bezier(.4,0,.2,1); opacity: 0;
}
.skills-cmd-block:hover .copy-btn { opacity: 1; }
.skills-cmd-block .copy-btn:hover { color: var(--text-primary); background: var(--bg-hover); }
.skills-cmd-block .copy-btn.copied { color: var(--green); border-color: var(--green); }
.cmd-comment { color: var(--tk-comment); font-style: italic; }
.cmd-accent { color: var(--accent-bright); }
.cmd-val { color: var(--tk-string); }
.cmd-dim { color: var(--text-dim); }

.ready-state {
  display: flex; align-items: center; gap: 10px; padding: 12px 18px;
  background: var(--green-dim); border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; color: var(--green);
}

.side-panel { display: flex; flex-direction: column; gap: 16px; }
.side-card h3 { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.side-card p { font-size: 12.5px; color: var(--text-secondary); line-height: 1.55; }
.side-card a {
  display: inline-flex; align-items: center; gap: 4px; margin-top: 8px;
  font-size: 12.5px; font-weight: 500; color: var(--accent-bright);
}
.side-card .document-icon { margin-right: 4px; opacity: .6; }

.file-list { list-style: none; padding: 0; margin: 0; }
.file-list li {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--text-secondary);
  padding: 4px 0; display: flex; justify-content: space-between;
}
.file-list li .size { color: var(--text-dim); font-size: 10px; }

.env-table { font-size: 11.5px; width: 100%; }
.env-table td { padding: 3px 0; vertical-align: top; }
.env-table td:first-child { font-family: var(--font-mono); color: var(--accent-bright); width: 130px; }
.env-table td:last-child { color: var(--text-dim); font-size: 10.5px; }

@media (max-width: 860px) {
  .skills-layout { grid-template-columns: 1fr; }
  .skills-hero { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .skills-hero { padding: 40px 16px 32px; }
  .skills-hero h1 { font-size: 26px; }
  .skills-layout { padding: 0 16px 60px; }
  .install-card-.install-card-body { padding: 20px 18px; }
  .step { padding-left: 32px; }
}