:root {
  --bg: #0b0d11;
  --bg-raised: #12161c;
  --bg-sidebar: #0e1116;
  --bg-code: #080a0d;
  --line: rgba(196, 165, 116, 0.16);
  --line-strong: rgba(196, 165, 116, 0.38);
  --text: #ece7de;
  --muted: #9aa3ad;
  --bronze: #c4a574;
  --bronze-2: #e0c49a;
  --steel: #7f8b98;
  --danger: #d48b7a;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --display: "Syne", "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sidebar: 18.5rem;
  --toc: 15.5rem;
  --topbar: 3.6rem;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { scroll-behavior: smooth; color-scheme: dark; }

body {
  font-family: var(--sans);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(196, 165, 116, 0.08), transparent 50%),
    linear-gradient(180deg, #10141a 0%, var(--bg) 18%);
  color: var(--text);
  letter-spacing: 0.01em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.7), transparent 70%);
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: var(--bronze);
  color: #1a140c;
  padding: 0.4rem 0.7rem;
  z-index: 20;
}
.skip-link:focus { top: 0.75rem; }

.app {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  grid-template-rows: var(--topbar) minmax(0, 1fr);
  min-height: 100vh;
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1rem 0 1.1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 17, 0.9);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 8;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: inherit;
  text-decoration: none;
  min-width: max-content;
}
.brand:hover .brand-mark { color: #fff; }
.brand-mark {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 1.05rem;
}
.brand-sub {
  color: var(--muted);
  font-size: 0.78rem;
  padding-left: 0.7rem;
  border-left: 1px solid var(--line-strong);
}

.search-open {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: min(22rem, 42vw);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.45rem 0.7rem 0.45rem 0.95rem;
  cursor: pointer;
  font: inherit;
}
.search-open span { margin-right: auto; }
.search-open kbd {
  font-family: var(--mono);
  font-size: 0.68rem;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 0.3rem;
  padding: 0.05rem 0.35rem;
  color: var(--steel);
}

.top-links {
  display: flex;
  gap: 0.9rem;
  font-size: 0.86rem;
}
.top-links a,
.top-links a:link,
.top-links a:visited { color: #e0c49a; text-decoration: none; }
.top-links a:hover { color: #fff; }

.nav-toggle {
  display: none;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 0.5rem;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--bronze-2);
  margin: 5px 0;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: var(--bg-sidebar);
  padding: 1.15rem 0.9rem 2.5rem;
  overflow: auto;
  height: calc(100vh - var(--topbar));
  position: sticky;
  top: var(--topbar);
}

.sidebar-kicker,
.toc-kicker {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bronze);
  font-weight: 600;
}
.sidebar-note {
  margin: 0.35rem 0 1rem;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.nav-group { margin: 0 0 1.05rem; }
.nav-group-title {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}
.nav-lib {
  margin: 0.15rem 0 0.7rem;
  padding-left: 0.2rem;
}
.nav-lib > summary,
#nav a {
  list-style: none;
  cursor: pointer;
  display: block;
  text-decoration: none;
  font-size: 0.86rem;
  padding: 0.28rem 0.55rem;
  border-radius: 0.4rem;
  border-left: 2px solid transparent;
}
#nav a,
#nav a:link,
#nav a:visited { color: #e0c49a; }
#nav a.active,
#nav a.active:link,
#nav a.active:visited {
  background: rgba(196, 165, 116, 0.12);
  border-left-color: var(--bronze);
  color: #e0c49a;
}
.nav-lib > summary { font-weight: 600; color: #e0c49a; }
.nav-lib[open] > summary { color: #e0c49a; }
#nav a:hover, .nav-lib > summary:hover {
  background: rgba(196, 165, 116, 0.08);
  color: #fff;
}
.nav-lib > summary::-webkit-details-marker { display: none; }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--toc);
  min-width: 0;
}

.doc {
  max-width: 52rem;
  padding: 2rem 2.1rem 4.5rem;
  line-height: 1.62;
  min-width: 0;
}
.doc:focus { outline: none; }
.doc:focus-visible { outline: 1px solid #c4a574; outline-offset: -1px; }

.hero {
  margin: 0 0 2rem;
  padding: 1.5rem 1.5rem 1.35rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(196, 165, 116, 0.12), transparent 42%),
    var(--bg-raised);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  width: 14rem;
  height: 14rem;
  right: -3rem;
  top: -4rem;
  border: 1px solid var(--line-strong);
  transform: rotate(27deg);
  opacity: 0.45;
}
.eyebrow {
  margin: 0 0 0.45rem;
  color: var(--bronze);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 600;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.05;
  margin: 0 0 0.7rem;
  font-weight: 800;
}
.lede { margin: 0 0 1.1rem; color: var(--muted); max-width: 40rem; }
.hero-actions { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.48rem 0.95rem;
  font-size: 0.88rem;
  font-weight: 600;
}
.btn-bronze { background: var(--bronze); color: #1a140c; }
.btn-ghost,
.btn-ghost:link,
.btn-ghost:visited { border: 1px solid var(--line-strong); color: #e0c49a; }
.btn-ghost:hover { color: #fff; }
.release-badge {
  margin: 1rem 0 0;
  color: var(--steel);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.doc h1, .doc h2, .doc h3, .doc h4 {
  font-family: var(--display);
  line-height: 1.2;
  scroll-margin-top: calc(var(--topbar) + 0.8rem);
}
.doc h1 { font-size: 2rem; margin: 0 0 0.8rem; }
.doc h2 {
  font-size: 1.35rem;
  margin: 2rem 0 0.7rem;
  padding-top: 0.4rem;
  border-top: 1px solid var(--line);
}
.doc h3 { font-size: 1.08rem; margin: 1.4rem 0 0.5rem; color: var(--bronze-2); }
.doc p { margin: 0.7rem 0; }
.doc a,
.doc a:link,
.doc a:visited { color: #e0c49a; }
.doc a:hover { color: #fff; }
.doc li { margin: 0.25rem 0; }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 1.6rem 0; }
.doc blockquote {
  margin: 1rem 0;
  padding: 0.2rem 0.9rem;
  border-left: 3px solid var(--bronze);
  color: var(--muted);
  background: rgba(196, 165, 116, 0.05);
}
.doc code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: rgba(196, 165, 116, 0.1);
  padding: 0.08rem 0.32rem;
  border-radius: 0.28rem;
}
.doc pre {
  position: relative;
  background: var(--bg-code);
  border: 1px solid var(--line);
  border-top: 2px solid var(--bronze);
  overflow: auto;
  padding: 1rem 1rem 1rem;
  border-radius: 0.55rem;
}
.doc pre code {
  background: none;
  padding: 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: #d7d2c8;
}
.copy-btn {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  font: 0.68rem var(--sans);
  color: var(--bronze-2);
  background: #171b22;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  padding: 0.18rem 0.45rem;
  cursor: pointer;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  display: block;
  overflow-x: auto;
  margin: 1rem 0;
}
.doc th, .doc td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.6rem;
  text-align: left;
  vertical-align: top;
}
.doc th { background: rgba(196, 165, 116, 0.08); color: var(--bronze-2); }
.doc td code { word-break: break-word; }

.crumb {
  color: var(--muted);
  font-size: 0.78rem;
  margin: 0 0 1rem;
}

.toc-wrap {
  padding: 2rem 1.1rem 3rem 0.4rem;
  position: sticky;
  top: var(--topbar);
  height: calc(100vh - var(--topbar));
  overflow: auto;
  border-left: 1px solid var(--line);
}
#toc a,
#toc a:link,
#toc a:visited {
  display: block;
  color: #e0c49a;
  text-decoration: none;
  font-size: 0.8rem;
  padding: 0.22rem 0;
  line-height: 1.35;
}
#toc a.depth-3 { padding-left: 0.75rem; }
#toc a:hover, #toc a.active { color: #fff; }
.edit-link,
.edit-link:link,
.edit-link:visited {
  display: inline-block;
  margin-top: 1.2rem;
  color: #e0c49a;
  font-size: 0.78rem;
}
.edit-link:hover { color: #fff; }

.doc-error pre {
  margin: 0.8rem 0;
  padding: 0.8rem 1rem;
  overflow: auto;
}
.doc-error a,
.doc-error a:link,
.doc-error a:visited { color: #e0c49a; }
.doc-error a:hover { color: #fff; }

.search-overlay[hidden],
.backdrop[hidden] {
  display: none !important;
}
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 7, 10, 0.72);
  z-index: 12;
  display: grid;
  place-items: start center;
  padding: 12vh 1rem 1rem;
}
.search-panel {
  width: min(42rem, 100%);
  background: #14181f;
  border: 1px solid var(--line-strong);
  border-radius: 0.9rem;
  box-shadow: var(--shadow);
  padding: 0.9rem;
}
.search-label {
  margin: 0 0 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bronze);
}
#search-input {
  width: 100%;
  background: #0c0f14;
  border: 1px solid var(--line);
  color: var(--text);
  font: 1rem var(--sans);
  padding: 0.7rem 0.8rem;
  border-radius: 0.5rem;
}
#search-results { list-style: none; margin: 0.6rem 0 0; padding: 0; max-height: 50vh; overflow: auto; }
#search-results a,
#search-results a:link,
#search-results a:visited {
  display: block;
  padding: 0.55rem 0.6rem;
  color: #e0c49a;
  text-decoration: none;
  border-radius: 0.4rem;
}
#search-results a[aria-selected="true"], #search-results a:hover {
  background: rgba(196, 165, 116, 0.12);
  color: #fff;
}
#search-results small { display: block; color: var(--muted); }
.search-hint { margin: 0.6rem 0 0; color: var(--steel); font-size: 0.75rem; }

.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 7;
}

.hljs-keyword, .hljs-selector-tag { color: #d4a574; }
.hljs-string, .hljs-attr { color: #c5d4a3; }
.hljs-number, .hljs-literal { color: #9ec3d8; }
.hljs-title, .hljs-title.class_, .hljs-type { color: #e0c49a; }
.hljs-comment { color: #6d7680; font-style: italic; }
.hljs-built_in, .hljs-meta { color: #b7c4d4; }

@media (max-width: 1080px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .toc-wrap { display: none; }
}

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .brand-sub { display: none; }
  .search-open { min-width: 0; flex: 1; }
  .search-open kbd { display: none; }
  .nav-toggle { display: block; }
  .sidebar {
    position: fixed;
    left: 0;
    top: var(--topbar);
    transform: translateX(-105%);
    width: min(20rem, 86vw);
    z-index: 9;
    height: calc(100vh - var(--topbar));
    transition: transform 0.2s ease;
  }
  body.nav-open .sidebar { transform: none; }
  .doc { padding: 1.25rem 1rem 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sidebar { transition: none; }
}