/* Talos docs — dark blue-black, one green accent, Impeccable spacing/motion. */
:root {
  --bg: #0b1016;
  --bg-raised: #0e151d;
  --bg-inset: #080d12;
  --border: #1b2530;
  --text: #e8ede9;
  --text-muted: #94a3ad;
  --accent: #3ddc84;
  --accent-dim: #2aa864;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --topbar-h: 64px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--topbar-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- top bar ---------------------------------------------------------- */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 30;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.brand-sub {
  margin-left: 8px;
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.search-wrap { position: relative; flex: 1; max-width: 480px; }
#search {
  width: 100%;
  height: 36px;
  padding: 0 16px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  transition: border-color 0.15s var(--ease);
}
#search:focus { outline: none; border-color: var(--accent-dim); }
#search::placeholder { color: var(--text-muted); }
#search-results {
  position: absolute;
  top: 44px;
  left: 0;
  right: 0;
  max-height: 60vh;
  overflow: auto;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
#search-results a {
  display: block;
  padding: 8px 16px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
#search-results a:last-child { border-bottom: none; }
#search-results a:hover, #search-results a.selected { background: var(--bg-inset); }
#search-results .hit-page { color: var(--text-muted); font-size: 12px; display: block; }
#search-results mark { background: none; color: var(--accent); }
.topbar-actions { display: flex; gap: 8px; margin-left: auto; }

.btn {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease),
              background-color 0.15s var(--ease);
  white-space: nowrap;
}
.btn-ghost:hover { border-color: var(--text-muted); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #08130c;
}
.btn-primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }

/* ---- shell ------------------------------------------------------------ */
.shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 220px;
  gap: 48px;
  max-width: 1360px;
  margin: 0 auto;
  padding: calc(var(--topbar-h) + 32px) 24px 80px;
}

/* ---- sidebar ----------------------------------------------------------- */
.sidebar {
  position: sticky;
  top: calc(var(--topbar-h) + 32px);
  align-self: start;
  max-height: calc(100vh - var(--topbar-h) - 48px);
  overflow-y: auto;
  padding-right: 8px;
}
.nav-group { margin-bottom: 24px; }
.nav-group-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.nav-group a {
  display: block;
  padding: 6px 12px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  border-left: 1px solid var(--border);
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.nav-group a:hover { color: var(--text); }
.nav-group a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ---- right TOC --------------------------------------------------------- */
.toc {
  position: sticky;
  top: calc(var(--topbar-h) + 32px);
  align-self: start;
  max-height: calc(100vh - var(--topbar-h) - 48px);
  overflow-y: auto;
  font-size: 13px;
}
.toc-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.toc a {
  display: block;
  padding: 4px 0;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s var(--ease);
}
.toc a:hover { color: var(--text); }
.toc a.current { color: var(--accent); }
.toc a.toc-3 { padding-left: 16px; }

/* ---- prose ------------------------------------------------------------- */
.content { min-width: 0; }
.prose { max-width: 76ch; }
.prose h1 {
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}
.prose h2 {
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 48px 0 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.prose h3 { font-size: 18px; margin: 32px 0 8px; letter-spacing: -0.01em; }
.prose h4 { font-size: 15px; margin: 24px 0 8px; }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose li { margin-bottom: 4px; }
.prose a { color: var(--accent); text-decoration: none; }
.prose a:hover { text-decoration: underline; text-underline-offset: 3px; }
.prose blockquote {
  margin: 16px 0;
  padding: 8px 16px;
  border-left: 2px solid var(--accent-dim);
  background: var(--bg-raised);
  color: var(--text-muted);
}
.prose blockquote p { margin: 0; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 48px 0; }
.prose img { max-width: 100%; }

.prose code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: 1px 5px;
}
.prose pre {
  position: relative;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  padding: 16px;
  overflow-x: auto;
  margin: 0 0 16px;
  line-height: 1.5;
}
.prose pre code { background: none; border: none; padding: 0; font-size: 13px; }
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  height: 26px;
  padding: 0 10px;
  font: 600 11px/1 var(--sans);
  letter-spacing: 0.08em;
  color: var(--text-muted);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s var(--ease), color 0.15s var(--ease);
}
.prose pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--text); }
.copy-btn.copied { color: var(--accent); border-color: var(--accent-dim); }

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px;
  font-size: 14px;
  display: block;
  overflow-x: auto;
}
.prose th, .prose td {
  text-align: left;
  padding: 8px 16px 8px 0;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.prose th {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ---- pager / footer ----------------------------------------------------- */
.pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 76ch;
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.pager-link {
  display: block;
  padding: 16px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  min-width: 200px;
  transition: border-color 0.15s var(--ease);
}
.pager-link:hover { border-color: var(--accent-dim); }
.pager-link span {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.pager-link.next { text-align: right; margin-left: auto; }
.page-footer {
  max-width: 76ch;
  margin-top: 48px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- large CTA ---------------------------------------------------------- */
.cta-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 48px;
  margin: 8px 0 24px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: #08130c;
  background: var(--accent);
  border: 1px solid var(--accent);
  transition: background-color 0.15s var(--ease), transform 0.15s var(--ease);
}
.prose a.cta-large { color: #08130c; }
.cta-large:hover, .prose a.cta-large:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  text-decoration: none;
}
.cta-large:active { transform: translateY(1px); }

/* ---- OS command tabs ----------------------------------------------------- */
.os-tabs { margin: 0 0 24px; border: 1px solid var(--border); }
.os-tab-buttons {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
}
.os-tab-buttons button {
  height: 36px;
  padding: 0 16px;
  font: 600 12px/1 var(--sans);
  letter-spacing: 0.08em;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  cursor: pointer;
  transition: color 0.15s var(--ease), background-color 0.15s var(--ease);
}
.os-tab-buttons button:hover { color: var(--text); }
.os-tab-buttons button[selected] {
  color: var(--accent);
  background: var(--bg-inset);
}
.os-tab-panel pre { border: none; margin: 0; }

/* ---- install blocks (LLM page) ------------------------------------------- */
.install-primary {
  border: 1px solid var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 5%, var(--bg-raised));
  padding: 16px 16px 0;
  margin: 0 0 24px;
}
.install-primary .os-tabs { margin-bottom: 16px; }
.install-label {
  display: inline-block;
  font: 700 11px/1 var(--sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.install-secondary { opacity: 0.75; }
.install-secondary:hover { opacity: 1; transition: opacity 0.15s var(--ease); }

/* ---- blur-in text (vanilla BlurText) ------------------------------------ */
.bt-word {
  display: inline-block;
  opacity: 0;
  filter: blur(8px);
  transform: translateY(-12px);
  will-change: transform, filter, opacity;
  transition: opacity 0.7s var(--ease), filter 0.7s var(--ease), transform 0.7s var(--ease);
}
.bt-word.bt-in { opacity: 1; filter: blur(0); transform: none; }
.bl-el {
  opacity: 0;
  filter: blur(6px);
  transform: translateY(10px);
  transition: opacity 0.7s var(--ease), filter 0.7s var(--ease), transform 0.7s var(--ease);
}
.bl-el.bl-in { opacity: 1; filter: blur(0); transform: none; }
/* Instant reveal (already-visible content on page load — no re-animation). */
.bt-word.bt-static, .bl-el.bl-static {
  opacity: 1;
  filter: none;
  transform: none;
  transition: none;
}
@media (prefers-reduced-motion: reduce) {
  .bt-word, .bl-el { opacity: 1 !important; filter: none !important; transform: none !important; transition: none !important; }
}

/* ---- sidebar hover indicator ---------------------------------------------
   NOTE: the sidebar keeps position:sticky from its base rule (sticky is a
   positioning context, so the absolute indicator anchors to it) — do not
   override position here or the sidebar scrolls out of view. */
#nav-indicator {
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 28px;
  background: var(--accent);
  transform: translateY(0);
  transition: transform 0.3s var(--ease), height 0.3s var(--ease), opacity 0.15s var(--ease);
  pointer-events: none;
  opacity: 0;
}
.nav-group a.hovered { color: var(--text); }
body:not(.nav-sticky) .nav-group a.hovered { color: var(--accent); }
.nav-group a.active { color: var(--accent); border-left-color: var(--border); }
body.nav-hovering .nav-group a.active:not(.hovered) { color: var(--text-muted); }
body.nav-sticky .nav-group a.active,
body.nav-sticky.nav-hovering .nav-group a.active:not(.hovered) { color: var(--accent); }

/* ---- responsive --------------------------------------------------------- */
@media (max-width: 1180px) {
  .shell { grid-template-columns: 240px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0, 1fr); padding-top: calc(var(--topbar-h) + 24px); }
  .sidebar {
    position: static;
    max-height: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 24px;
    margin-bottom: 24px;
  }
  .topbar { gap: 12px; padding: 0 16px; }
  .btn-ghost { display: none; }
  .brand-sub { display: none; }
  .search-wrap { max-width: none; min-width: 96px; }
  .btn-primary { padding: 0 10px; font-size: 11px; letter-spacing: 0.06em; }
}