/* ============================================================
   Astra Code — Documentation design system
   Type: IBM Plex Sans (UI/body) · JetBrains Mono (code/brand/eyebrows)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ---------- Tokens: dark (default) ---------- */
:root,
[data-theme="dark"] {
  --bg:            #0a0d13;
  --bg-elev:       #0e121b;
  --panel:         #11151f;
  --panel-2:       #141925;
  --code-bg:       #0c1018;
  --border:        rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);
  --text:          #e7eaf0;
  --text-2:        #aab2c0;
  --text-3:        #6f7889;
  --accent:        #5b8cff;
  --accent-2:      #82a8ff;
  --accent-soft:   rgba(91,140,255,0.13);
  --accent-line:   rgba(91,140,255,0.35);
  --green:         #3ddc97;
  --amber:         #e0a13d;
  --red:           #ff6b6b;
  --shadow:        0 18px 50px -20px rgba(0,0,0,0.7);
  --selection:     rgba(91,140,255,0.30);
}

/* ---------- Tokens: light ---------- */
[data-theme="light"] {
  --bg:            #fbfbfd;
  --bg-elev:       #ffffff;
  --panel:         #ffffff;
  --panel-2:       #f5f6f9;
  --code-bg:       #f6f7fa;
  --border:        #e7e9ef;
  --border-strong: #d7dae3;
  --text:          #131722;
  --text-2:        #565e70;
  --text-3:        #8a93a5;
  --accent:        #2f63f6;
  --accent-2:      #2150d6;
  --accent-soft:   rgba(47,99,246,0.09);
  --accent-line:   rgba(47,99,246,0.30);
  --green:         #149a63;
  --amber:         #b5781a;
  --red:           #d33b3b;
  --shadow:        0 18px 50px -24px rgba(20,28,55,0.22);
  --selection:     rgba(47,99,246,0.18);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .25s ease, color .25s ease;
}
::selection { background: var(--selection); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 20px; border: 3px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--text-3); background-clip: padding-box; }

/* ============================================================
   Brand mark
   ============================================================ */
.star {
  width: 1em; height: 1em; display: inline-block; flex: none;
  color: var(--accent);
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600; font-size: 15px; letter-spacing: -0.01em;
  color: var(--text);
}
.brand .star { font-size: 17px; }
.brand b { font-weight: 700; }
.brand .ver {
  font-size: 11px; font-weight: 500; color: var(--accent);
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  padding: 1px 7px; border-radius: 20px; letter-spacing: 0;
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: sticky; top: 0; z-index: 60;
  height: 60px;
  display: grid; grid-template-columns: 290px 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 0 22px 0 24px;
  background: color-mix(in srgb, var(--bg-elev) 86%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.header__brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.header__search {
  display: flex; align-items: center; gap: 10px;
  height: 38px; max-width: 460px; width: 100%;
  padding: 0 12px 0 13px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text-3);
  cursor: text; transition: border-color .15s, background .15s;
}
.header__search:hover { border-color: var(--border-strong); }
.header__search svg { width: 16px; height: 16px; flex: none; }
.header__search span { font-size: 13.5px; }
.header__search kbd {
  margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--text-3); background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 5px; padding: 2px 6px; line-height: 1;
}
.header__actions { display: flex; align-items: center; gap: 6px; }

.iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 9px;
  background: transparent; border: 1px solid transparent;
  color: var(--text-2); cursor: pointer; transition: all .15s;
}
.iconbtn:hover { background: var(--panel); border-color: var(--border); color: var(--text); }
.iconbtn svg { width: 17px; height: 17px; }

.langtoggle {
  display: inline-flex; align-items: center;
  height: 36px; padding: 2px; gap: 2px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 9px;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; font-weight: 600;
}
.langtoggle button {
  height: 30px; padding: 0 9px; border: 0; border-radius: 7px;
  background: transparent; color: var(--text-3); cursor: pointer; transition: all .15s;
}
.langtoggle button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); }

.ghost-divider { width: 1px; height: 22px; background: var(--border); margin: 0 4px; }

/* burger only on mobile */
.burger { display: none; }

/* ============================================================
   Layout shell
   ============================================================ */
.layout {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr) 248px;
  max-width: 1480px; margin: 0 auto;
  align-items: start;
}

/* ---------- Sidebar (left nav) ---------- */
.sidebar {
  position: sticky; top: 60px;
  height: calc(100vh - 60px);
  overflow-y: auto; overscroll-behavior: contain;
  padding: 22px 12px 60px 24px;
  border-right: 1px solid var(--border);
}
.nav-group { margin-bottom: 22px; }
.nav-caption {
  display: flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--text-3);
  padding: 4px 10px 8px; margin: 0;
}
.nav-caption .dot { width: 6px; height: 6px; border-radius: 2px; background: var(--accent); flex: none; }
.nav-sub {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.03em; text-transform: uppercase; color: var(--text-3);
  padding: 12px 10px 4px;
}
.nav-list { list-style: none; margin: 0; padding: 0; }
.nav-list a {
  display: flex; align-items: center; gap: 9px;
  padding: 6px 10px; border-radius: 7px;
  font-size: 13.5px; color: var(--text-2);
  line-height: 1.35; transition: background .12s, color .12s;
  position: relative;
}
.nav-list a .idx {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--text-3); width: 18px; flex: none;
}
.nav-list a:hover { background: var(--panel); color: var(--text); }
.nav-list a.active {
  background: var(--accent-soft); color: var(--accent); font-weight: 500;
}
.nav-list a.active .idx { color: var(--accent); }
.nav-list a.active::before {
  content: ""; position: absolute; left: -24px; top: 6px; bottom: 6px;
  width: 3px; border-radius: 0 3px 3px 0; background: var(--accent);
}

/* ---------- Content ---------- */
.content {
  min-width: 0;
  padding: 38px 56px 120px;
}
.content--wide { padding-left: 64px; padding-right: 64px; }

/* ---------- On-this-page TOC ---------- */
.toc {
  position: sticky; top: 60px;
  height: calc(100vh - 60px); overflow-y: auto;
  padding: 38px 22px 60px 8px;
}
.toc h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--text-3); margin: 0 0 12px; padding-left: 12px;
}
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }
.toc a {
  display: block; padding: 4px 12px; font-size: 12.5px; color: var(--text-3);
  line-height: 1.45; border-left: 2px solid transparent; margin-left: -1px;
  transition: color .12s, border-color .12s;
}
.toc a:hover { color: var(--text-2); }
.toc a.l2 { padding-left: 24px; }
.toc a.active { color: var(--accent); border-left-color: var(--accent); }

/* ============================================================
   Homepage — hero(s) + cards
   ============================================================ */
.home { padding: 0; }
.home-hero { padding: 56px 56px 26px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 600;
  letter-spacing: 0.02em; color: var(--accent);
  padding: 5px 11px 5px 9px; border: 1px solid var(--accent-line);
  background: var(--accent-soft); border-radius: 20px;
}
.eyebrow .star { font-size: 13px; }

h1.title {
  font-size: clamp(38px, 5vw, 58px); line-height: 1.02;
  letter-spacing: -0.03em; font-weight: 700; margin: 20px 0 0;
}
.title .accent { color: var(--accent); }
.lede {
  font-size: 18px; line-height: 1.6; color: var(--text-2);
  max-width: 60ch; margin: 18px 0 0; text-wrap: pretty;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  height: 44px; padding: 0 20px; border-radius: 10px;
  font-family: 'IBM Plex Sans', sans-serif; font-size: 14.5px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: all .15s; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn--primary { background: var(--accent); color: #fff; box-shadow: 0 8px 22px -10px var(--accent); }
.btn--primary:hover { background: var(--accent-2); transform: translateY(-1px); }
.btn--ghost { background: var(--panel); color: var(--text); border-color: var(--border-strong); }
.btn--ghost:hover { border-color: var(--text-3); background: var(--panel-2); }

.hero-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 18px;
  margin-top: 26px; font-size: 13px; color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
}
.hero-meta b { color: var(--text-2); font-weight: 600; }
.hero-meta .sep { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); opacity: .5; }

/* Variant B: command panel */
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.cmd-panel {
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden; box-shadow: var(--shadow);
}
.cmd-panel__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 14px; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 60%, transparent);
}
.cmd-panel__bar .tl { display: flex; gap: 7px; }
.cmd-panel__bar .tl i { width: 11px; height: 11px; border-radius: 50%; background: var(--border-strong); }
.cmd-panel__bar .name {
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--text-3); margin-left: 4px;
}
.cmd-panel__body { padding: 18px 18px 20px; font-family: 'JetBrains Mono', monospace; font-size: 13px; line-height: 1.85; }
.cmd-line { display: flex; gap: 10px; white-space: pre-wrap; word-break: break-word; }
.cmd-line .pfx { color: var(--accent); user-select: none; }
.cmd-line .c { color: var(--text); }
.cmd-out { color: var(--text-3); padding-left: 0; }
.cmd-out .ok { color: var(--green); }

/* Variant C: feature strip */
.feature-strip {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  margin-top: 38px; background: var(--border); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
}
.feature {
  background: var(--bg-elev); padding: 22px 22px;
}
.feature .k {
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; font-weight: 600;
  color: var(--accent); letter-spacing: 0.02em;
}
.feature h4 { margin: 9px 0 5px; font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
.feature p { margin: 0; font-size: 13px; color: var(--text-2); line-height: 1.55; }

/* ---------- Cards section ---------- */
.home-sections { padding: 14px 56px 90px; }
.section-head {
  display: flex; align-items: baseline; gap: 14px;
  margin: 40px 0 18px; padding-bottom: 14px; border-bottom: 1px solid var(--border);
}
.section-head h2 { font-size: 21px; font-weight: 600; letter-spacing: -0.02em; margin: 0; }
.section-head .cap {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.section-head .count { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-3); }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card {
  display: flex; flex-direction: column; gap: 9px;
  padding: 20px 20px 18px; border-radius: 13px;
  background: var(--bg-elev); border: 1px solid var(--border);
  transition: border-color .15s, transform .15s, background .15s;
  position: relative; overflow: hidden;
}
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  box-shadow: inset 0 0 0 1px transparent; transition: box-shadow .15s; pointer-events: none;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent-line); }
.card:hover::after { box-shadow: inset 0 0 0 1px var(--accent-line); }
.card__top { display: flex; align-items: center; gap: 11px; }
.card__icon {
  width: 34px; height: 34px; flex: none; border-radius: 9px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-line);
}
.card__icon svg { width: 17px; height: 17px; }
.card__idx { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-3); }
.card h3 { margin: 4px 0 0; font-size: 15.5px; font-weight: 600; letter-spacing: -0.01em; }
.card p { margin: 0; font-size: 13px; color: var(--text-2); line-height: 1.5; }
.card .go {
  margin-top: 6px; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-3);
  display: inline-flex; align-items: center; gap: 6px; transition: color .15s, gap .15s;
}
.card:hover .go { color: var(--accent); gap: 9px; }

/* compact list card variant */
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

/* ============================================================
   Article (prose) styles
   ============================================================ */
.breadcrumb {
  display: flex; align-items: center; gap: 9px; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-3); margin-bottom: 22px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .chev { opacity: .5; }
.breadcrumb .cur { color: var(--text-2); }

.article { max-width: 760px; }
.article-head { margin-bottom: 30px; }
.article-eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 600;
  color: var(--accent); letter-spacing: 0.02em;
}
.article h1 {
  font-size: 38px; line-height: 1.1; letter-spacing: -0.025em; font-weight: 700; margin: 10px 0 0;
}
.article .article-lede { font-size: 17px; color: var(--text-2); margin-top: 14px; line-height: 1.6; text-wrap: pretty; }

.prose { font-size: 15.5px; line-height: 1.72; }
.prose > * + * { margin-top: 18px; }
.prose h2 {
  font-size: 24px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.25;
  margin: 46px 0 0; padding-top: 8px; scroll-margin-top: 80px;
}
.prose h3 {
  font-size: 18px; font-weight: 600; letter-spacing: -0.01em;
  margin: 34px 0 0; scroll-margin-top: 80px;
}
.prose h2 + p, .prose h3 + p { margin-top: 12px; }
.prose p { color: var(--text); }
.prose a:not(.btn) { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-line); transition: border-color .15s; }
.prose a:not(.btn):hover { border-bottom-color: var(--accent); }
.prose strong { font-weight: 600; color: var(--text); }
.prose ul, .prose ol { margin: 16px 0; padding-left: 22px; }
.prose li { margin: 7px 0; }
.prose li::marker { color: var(--text-3); }
.prose ul li::marker { content: "–  "; }

.anchor-h {
  display: inline-flex; align-items: center; gap: 10px;
}
.anchor-h .hash { opacity: 0; color: var(--text-3); font-weight: 400; transition: opacity .15s; text-decoration: none; }
.prose h2:hover .hash, .prose h3:hover .hash { opacity: 1; }

/* inline code */
.prose :not(pre) > code {
  font-size: 0.86em; padding: 2px 6px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent-2);
  border: 1px solid var(--accent-line);
}
[data-theme="light"] .prose :not(pre) > code { color: var(--accent-2); }

/* code blocks */
.codeblock {
  margin: 22px 0; border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; background: var(--code-bg);
}
.codeblock__head {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px 9px 15px; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 55%, transparent);
}
.codeblock__lang {
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; font-weight: 600;
  color: var(--text-3); letter-spacing: 0.03em; text-transform: uppercase;
}
.copybtn {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  height: 28px; padding: 0 10px; border-radius: 7px; cursor: pointer;
  background: transparent; border: 1px solid var(--border); color: var(--text-2);
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; transition: all .14s;
}
.copybtn:hover { border-color: var(--border-strong); color: var(--text); background: var(--panel); }
.copybtn svg { width: 13px; height: 13px; }
.copybtn.copied { color: var(--green); border-color: color-mix(in srgb, var(--green) 40%, transparent); }
.codeblock pre {
  margin: 0; padding: 16px 16px; overflow-x: auto;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; line-height: 1.7; color: var(--text);
}
.codeblock pre .cm { color: var(--text-3); }     /* comment */
.codeblock pre .tok { color: var(--accent-2); }  /* keyword/cmd */
.codeblock pre .str { color: var(--green); }      /* string */
.codeblock pre .pr { color: var(--accent); }      /* prompt sign */

/* admonitions */
.admon {
  margin: 22px 0; padding: 15px 18px 15px 16px; border-radius: 11px;
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
  background: var(--panel); display: flex; gap: 13px;
}
.admon__icon { flex: none; width: 20px; height: 20px; color: var(--accent); margin-top: 2px; }
.admon__icon svg { width: 20px; height: 20px; }
.admon__body { font-size: 14px; line-height: 1.6; color: var(--text-2); }
.admon__body p { margin: 0; color: var(--text-2); }
.admon__title { font-weight: 600; color: var(--text); margin-bottom: 3px; font-size: 13px; }
.admon--tip { border-left-color: var(--green); }
.admon--tip .admon__icon { color: var(--green); }
.admon--warn { border-left-color: var(--amber); }
.admon--warn .admon__icon { color: var(--amber); }

/* tables */
.table-wrap { margin: 22px 0; overflow-x: auto; border: 1px solid var(--border); border-radius: 11px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.prose thead th {
  text-align: left; font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase; color: var(--text-3);
  padding: 11px 16px; background: var(--panel-2); border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.prose tbody td { padding: 11px 16px; border-bottom: 1px solid var(--border); vertical-align: top; color: var(--text-2); }
.prose tbody tr:last-child td { border-bottom: 0; }
.prose tbody tr:hover td { background: color-mix(in srgb, var(--panel) 50%, transparent); }
.prose tbody td code { white-space: nowrap; }

/* kbd */
kbd.key {
  font-family: 'JetBrains Mono', monospace; font-size: 0.82em; font-weight: 500;
  padding: 2px 7px; border-radius: 6px; color: var(--text);
  background: var(--panel-2); border: 1px solid var(--border-strong);
  box-shadow: 0 1px 0 var(--border-strong);
}

/* prev / next */
.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 56px;
  padding-top: 28px; border-top: 1px solid var(--border);
}
.pager a {
  display: flex; flex-direction: column; gap: 5px; padding: 16px 18px;
  border: 1px solid var(--border); border-radius: 12px; background: var(--bg-elev);
  transition: border-color .15s, transform .15s;
}
.pager a:hover { border-color: var(--accent-line); transform: translateY(-1px); }
.pager .dir { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--text-3); }
.pager .pg-title { font-weight: 600; font-size: 14.5px; }
.pager a.next { text-align: right; align-items: flex-end; }

/* feedback row */
.feedback {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-top: 30px; padding: 16px 0 0; font-size: 13px; color: var(--text-3);
}
.feedback .acts { display: flex; gap: 8px; margin-left: auto; }
.feedback a {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 8px;
  border: 1px solid var(--border); color: var(--text-2); font-size: 12.5px; transition: all .15s;
}
.feedback a:hover { border-color: var(--border-strong); color: var(--text); }
.feedback a svg { width: 14px; height: 14px; }

/* ============================================================
   Search overlay
   ============================================================ */
.search-overlay {
  position: fixed; inset: 0; z-index: 100; display: none;
  align-items: flex-start; justify-content: center;
  padding-top: 12vh;
  background: color-mix(in srgb, var(--bg) 55%, rgba(0,0,0,.5));
  backdrop-filter: blur(5px);
}
.search-overlay.open { display: flex; }
.search-box {
  width: min(620px, 92vw); background: var(--bg-elev);
  border: 1px solid var(--border-strong); border-radius: 14px;
  box-shadow: var(--shadow); overflow: hidden;
}
.search-box__input { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.search-box__input svg { width: 18px; height: 18px; color: var(--text-3); }
.search-box__input input {
  flex: 1; border: 0; outline: 0; background: transparent; color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif; font-size: 16px;
}
.search-box__input input::placeholder { color: var(--text-3); }
.search-box__input kbd { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3); border: 1px solid var(--border); border-radius: 5px; padding: 2px 7px; }
.search-results { max-height: 52vh; overflow-y: auto; padding: 8px; }
.search-results .sr-cap { font-family:'JetBrains Mono',monospace; font-size: 10.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-3); padding: 10px 12px 6px; }
.sr-item { display: flex; align-items: center; gap: 12px; padding: 11px 12px; border-radius: 9px; cursor: pointer; }
.sr-item:hover, .sr-item.sel { background: var(--accent-soft); }
.sr-item .sr-ic { width: 30px; height: 30px; border-radius: 7px; display: grid; place-items: center; background: var(--panel-2); color: var(--text-3); flex: none; border: 1px solid var(--border); }
.sr-item:hover .sr-ic, .sr-item.sel .sr-ic { color: var(--accent); border-color: var(--accent-line); }
.sr-item { align-items: flex-start; }
.sr-item .sr-t { font-size: 14px; font-weight: 500; }
.sr-item .sr-d { font-size: 12px; color: var(--text-3); line-height: 1.45; margin-top: 2px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sr-item .sr-sec { color: var(--text-3); font-weight: 400; }
.search-results mark { background: var(--accent-soft); color: var(--accent-2); border-radius: 3px; padding: 0 1px; }
.sr-item .sr-idx { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3); }
.search-empty { padding: 40px 20px; text-align: center; color: var(--text-3); font-size: 13.5px; }

/* ============================================================
   Variant switcher (design explorer)
   ============================================================ */
.variant-bar {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 90;
  display: flex; align-items: center; gap: 4px;
  padding: 6px; border-radius: 13px;
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  backdrop-filter: blur(12px); border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
}
.variant-bar .vlabel {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3);
  padding: 0 10px 0 8px; display: flex; align-items: center; gap: 7px;
}
.variant-bar .vlabel .star { font-size: 13px; }
.variant-bar button {
  height: 32px; padding: 0 13px; border-radius: 8px; border: 1px solid transparent;
  background: transparent; color: var(--text-2); cursor: pointer;
  font-family: 'IBM Plex Sans', sans-serif; font-size: 12.5px; font-weight: 500; transition: all .15s;
  display: flex; align-items: center; gap: 7px;
}
.variant-bar button .vk { font-family:'JetBrains Mono',monospace; font-size: 11px; color: var(--text-3); }
.variant-bar button:hover { background: var(--panel); color: var(--text); }
.variant-bar button[aria-pressed="true"] { background: var(--accent); color: #fff; }
.variant-bar button[aria-pressed="true"] .vk { color: rgba(255,255,255,.7); }

/* variant visibility */
.hero-variant { display: none; }
body[data-home="a"] .hero-variant.va,
body[data-home="b"] .hero-variant.vb,
body[data-home="c"] .hero-variant.vc { display: block; }

/* ============================================================
   Footer
   ============================================================ */
.foot {
  border-top: 1px solid var(--border); padding: 30px 56px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-3);
}
.foot .brand { font-size: 14px; }
.foot a:hover { color: var(--accent); }
.foot .spacer { flex: 1; }
.foot nav { display: flex; gap: 18px; flex-wrap: wrap; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1180px) {
  .layout { grid-template-columns: 270px minmax(0,1fr); }
  .toc { display: none; }
  .header { grid-template-columns: 270px 1fr auto; }
}
@media (max-width: 920px) {
  .header { grid-template-columns: auto 1fr auto; padding: 0 14px; }
  .header__search { display: none; }
  .burger { display: inline-flex; }
  .layout { grid-template-columns: minmax(0,1fr); }
  .sidebar {
    position: fixed; top: 60px; left: 0; bottom: 0; width: 300px; z-index: 70;
    background: var(--bg-elev); transform: translateX(-104%); transition: transform .22s ease;
    box-shadow: var(--shadow);
  }
  body.nav-open .sidebar { transform: translateX(0); }
  .nav-scrim { position: fixed; inset: 60px 0 0; background: rgba(0,0,0,.45); z-index: 65; display: none; }
  body.nav-open .nav-scrim { display: block; }
  .content, .home-hero, .home-sections, .foot { padding-left: 22px; padding-right: 22px; }
  .home-hero { padding-top: 34px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .feature-strip { grid-template-columns: 1fr; }
  .card-grid, .card-grid--2 { grid-template-columns: 1fr; }
  .pager { grid-template-columns: 1fr; }
  .variant-bar { bottom: 12px; flex-wrap: wrap; justify-content: center; max-width: 94vw; }
}
@media (max-width: 520px) {
  h1.title { font-size: 34px; }
  .variant-bar .vlabel { display: none; }
}