/* Starla docs — terminal / technical reference */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --paper: oklch(0.985 0.003 240);
  --paper-2: oklch(0.96 0.004 240);
  --ink: oklch(0.20 0.015 250);
  --ink-2: oklch(0.36 0.012 250);
  --ink-mute: oklch(0.56 0.010 250);
  --rule: oklch(0.88 0.006 250);
  --rule-strong: oklch(0.72 0.010 250);
  --code-bg: oklch(0.965 0.005 250);
  --code-ink: oklch(0.22 0.015 250);
  --accent: oklch(0.52 0.14 250);   /* steel blue link */
  --accent-2: oklch(0.55 0.10 240);
  --highlight: oklch(0.92 0.06 95);
  --warn-bg: oklch(0.965 0.025 90);
  --warn-edge: oklch(0.65 0.14 70);
  --shadow: 0 1px 0 oklch(0.92 0.005 250);
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

/* ——— dark mode ——— deep ink-blue paper, warmer ink, cyan accent. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { color-scheme: dark;
    --paper: oklch(0.165 0.018 252);
    --paper-2: oklch(0.215 0.020 252);
    --ink: oklch(0.94 0.008 90);
    --ink-2: oklch(0.78 0.010 90);
    --ink-mute: oklch(0.55 0.014 252);
    --rule: oklch(0.30 0.018 252);
    --rule-strong: oklch(0.46 0.020 252);
    --code-bg: oklch(0.135 0.018 252);
    --code-ink: oklch(0.92 0.010 90);
    --accent: oklch(0.82 0.13 220);
    --accent-2: oklch(0.78 0.11 200);
    --highlight: oklch(0.40 0.11 95);
    --warn-bg: oklch(0.24 0.045 75);
    --warn-edge: oklch(0.80 0.14 70);
    --shadow: 0 1px 0 oklch(0.10 0.015 252);
  }
}
/* explicit overrides via toggle */
:root[data-theme="dark"] { color-scheme: dark;
  --paper: oklch(0.165 0.018 252);
  --paper-2: oklch(0.215 0.020 252);
  --ink: oklch(0.94 0.008 90);
  --ink-2: oklch(0.78 0.010 90);
  --ink-mute: oklch(0.55 0.014 252);
  --rule: oklch(0.30 0.018 252);
  --rule-strong: oklch(0.46 0.020 252);
  --code-bg: oklch(0.135 0.018 252);
  --code-ink: oklch(0.92 0.010 90);
  --accent: oklch(0.82 0.13 220);
  --accent-2: oklch(0.78 0.11 200);
  --highlight: oklch(0.40 0.11 95);
  --warn-bg: oklch(0.24 0.045 75);
  --warn-edge: oklch(0.80 0.14 70);
  --shadow: 0 1px 0 oklch(0.10 0.015 252);
}
:root[data-theme="light"] { color-scheme: light; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-weight: 400;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ————— shell ————— */
.shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 720px) 220px;
  gap: 48px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 32px 80px;
}

@media (max-width: 1080px) {
  .shell { grid-template-columns: 180px minmax(0, 1fr); gap: 32px; padding: 20px 24px 64px; }
  .rail-r { display: none; }
}
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; gap: 0; padding: 16px 18px 48px; }
  .rail-l { position: static !important; padding-top: 0 !important; margin-bottom: 24px; }
}

/* ————— masthead ————— */
.mast {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 14px;
  margin-bottom: 14px;
}
.mast .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.mast .brand img { width: 28px; height: 28px; border-radius: 4px; }
.mast .brand .word { font-family: var(--mono); font-size: 18px; font-weight: 600; letter-spacing: -0.01em; line-height: 1; }
.mast .brand .word em { font-style: normal; color: var(--ink); }
.mast .meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  display: flex;
  gap: 18px;
  align-items: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.mast .meta .theme-toggle {
  background: none;
  border: 1px solid var(--rule);
  font: inherit;
  color: var(--ink-mute);
  padding: 3px 8px;
  cursor: pointer;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .15s, border-color .15s, background .15s;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.mast .meta .theme-toggle:hover { color: var(--ink); border-color: var(--rule-strong); }
.mast .meta .theme-toggle .glyph { width: 10px; display: inline-block; text-align: center; }
.mast .meta .live::before {
  content: "●";
  color: oklch(0.7 0.16 145);
  margin-right: 4px;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* ————— rails ————— */
.rail-l, .rail-r {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-mute);
}
.rail-l { position: sticky; top: 28px; align-self: start; }
.rail-r { position: sticky; top: 28px; align-self: start; }

.rail-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 10px;
  color: var(--ink-mute);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.rail-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.toc { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.toc li { display: flex; align-items: baseline; gap: 8px; }
.toc a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px dotted transparent;
  flex: 1;
  font-size: 13px;
  font-family: var(--sans);
}
.toc a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.toc a.current { color: var(--ink); font-weight: 500; }
.toc a.current::before { content: "▸ "; color: var(--accent); }
.toc .num { font-family: var(--mono); font-size: 10px; color: var(--ink-mute); }

.rail-block { margin-bottom: 28px; }
.rail-block dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: 11px; }
.rail-block dt { color: var(--ink-mute); text-transform: uppercase; letter-spacing: 0.08em; font-size: 10px; }
.rail-block dd { color: var(--ink-2); }

/* ————— content typography ————— */
.content { min-width: 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--accent);
}

h1.display {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(34px, 4.6vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin-bottom: 14px;
}
h1.display em { font-style: normal; color: var(--ink); }

.lede {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 68ch;
  margin-bottom: 28px;
  font-weight: 400;
}

h2.section {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 48px 0 10px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
}
h2.section .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0;
  text-transform: none;
  font-weight: 500;
}
h2.section em { font-style: normal; color: var(--ink); }

h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 17px;
  margin: 28px 0 8px;
  letter-spacing: -0.005em;
}

h4 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin: 20px 0 6px;
}

.content p {
  margin: 10px 0;
  max-width: 64ch;
}
.content p + p { margin-top: 12px; }

.content ul, .content ol {
  margin: 10px 0 10px 22px;
  max-width: 64ch;
}
.content li { margin: 4px 0; }
.content li::marker { color: var(--ink-mute); }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid oklch(from var(--accent) l c h / 0.35); transition: border-color .15s; }
a:hover { border-bottom-color: var(--accent); }
:root[data-theme="dark"] a,
:root:not([data-theme="light"]) a { border-bottom-color: oklch(from var(--accent) l c h / 0.45); }

strong { font-weight: 600; color: var(--ink); }

/* ————— code ————— */
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid oklch(from var(--rule) l c h / 0.7);
}

pre {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  background: var(--code-bg);
  color: var(--code-ink);
  border: 1px solid var(--rule);
  border-radius: 6px;
  margin: 18px 0;
  overflow: hidden;
  position: relative;
}
pre .pre-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 6px 12px;
  border-bottom: 1px solid var(--rule);
  background: oklch(from var(--code-bg) calc(l + 0.04) c h);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) pre .pre-head { background: oklch(from var(--paper) calc(l + 0.025) c h); }
}
:root[data-theme="dark"] pre .pre-head { background: oklch(from var(--paper) calc(l + 0.025) c h); }
pre .pre-head .lang::before { content: "// "; color: var(--accent); }
pre .pre-body { padding: 14px 16px; overflow-x: auto; }
pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  display: block;
  white-space: pre;
}

/* token-ish coloring on raw codeblocks (no prism dependency) */
pre code .c { color: var(--ink-mute); font-style: italic; }
pre code .k { color: var(--accent); }
pre code .s { color: oklch(0.55 0.10 145); }
pre code .n { color: var(--accent-2); }

/* ————— callouts ————— */
.callout {
  border-left: 2px solid var(--warn-edge);
  background: var(--warn-bg);
  padding: 12px 14px 12px 16px;
  margin: 18px 0;
  font-size: 14px;
  border-radius: 0 4px 4px 0;
  max-width: 64ch;
}
.callout .label {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--warn-edge);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ————— tables ————— */
table {
  border-collapse: collapse;
  margin: 16px 0;
  width: 100%;
  font-size: 13.5px;
  font-family: var(--sans);
}
thead th {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--rule-strong);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  font-weight: 500;
}
tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
tbody tr:hover td { background: oklch(from var(--paper-2) l c h / 0.6); }
tbody td:first-child code { font-size: 12px; }

/* ————— hero ————— */
.hero {
  position: relative;
  margin: 0 0 36px;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--rule);
}

.starfield {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.starfield svg { width: 100%; height: 100%; opacity: 0.55; }

.hero > * { position: relative; z-index: 1; }

.hero-meta {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 12px;
  flex-wrap: wrap;
}
.hero-meta span strong { color: var(--ink); font-weight: 500; }

/* ————— feature grid ————— */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin: 18px 0 8px;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.feat {
  padding: 16px 18px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.feat .id {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.feat h3 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 14px;
  margin: 0 0 6px;
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.feat h3 em { font-style: normal; color: var(--ink); }
.feat p {
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.45;
  margin: 0;
}
@media (max-width: 600px) { .feat-grid { grid-template-columns: 1fr; } }

/* ————— quickstart picker ————— */
.qs {
  border: 1px solid var(--rule);
  border-radius: 6px;
  margin: 16px 0;
  overflow: hidden;
}
.qs-tabs {
  display: flex;
  background: var(--paper-2);
  border-bottom: 1px solid var(--rule);
  overflow-x: auto;
}
.qs-tabs button {
  background: none;
  border: none;
  font: inherit;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  padding: 10px 16px;
  cursor: pointer;
  border-right: 1px solid var(--rule);
  white-space: nowrap;
  position: relative;
}
.qs-tabs button[aria-selected="true"] {
  color: var(--ink);
  background: var(--paper);
}
.qs-tabs button[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--accent);
}
.qs-tabs button:hover { color: var(--ink); }
.qs-panel { display: none; }
.qs-panel.active { display: block; }
.qs-panel pre { margin: 0; border-radius: 0; border: none; }

/* ————— pull-quote / spec line ————— */
.spec {
  font-family: var(--sans);
  font-style: normal;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-2);
  border-left: 2px solid var(--rule-strong);
  padding: 2px 0 2px 14px;
  margin: 16px 0;
  max-width: 64ch;
}

/* ————— footer ————— */
footer {
  grid-column: 1 / -1;
  margin-top: 80px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-wrap: wrap;
}
footer a { color: var(--ink-2); border-bottom: 1px dotted var(--rule-strong); }
footer a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ————— ascii diagram ————— */
.ascii {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.5;
  background: var(--code-bg);
  color: var(--code-ink);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 18px 20px;
  overflow-x: auto;
  white-space: pre;
  margin: 18px 0;
}

/* ————— constellation diagram ————— */
.constellation {
  width: 100%;
  height: 280px;
  margin: 20px 0;
  display: block;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background:
    radial-gradient(ellipse at 30% 40%, oklch(from var(--paper-2) l c h / 0.6), transparent 60%),
    var(--paper);
}

/* ————— small caps note ————— */
.note-inline {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.note-inline::before {
  content: "//";
  color: var(--ink-mute);
  font-family: var(--mono);
}

/* ————— nav back link ————— */
.crumb {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.crumb a { color: var(--ink-2); border: none; }
.crumb a:hover { color: var(--accent); }

/* ————— buttons / CTAs ————— */
.cta-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 18px 0 10px;
}
.btn {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 9px 16px;
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all .15s;
}
.btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn .arrow { transition: transform .15s; }
.btn:hover .arrow { transform: translateX(2px); }

/* ————— signal scope (live-feel ticker) ————— */
.scope {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  background: var(--code-bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 10px 14px;
  margin: 18px 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 12px;
}
.scope .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: oklch(0.7 0.16 145);
  flex-shrink: 0;
  animation: pulse 2.4s ease-in-out infinite;
}
.scope .feed { flex: 1; overflow: hidden; white-space: nowrap; }
.scope .feed span { display: inline-block; padding-right: 32px; }

/* ————— measurement chips ————— */
.chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 6px 0 14px;
}
.chip {
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 8px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  color: var(--ink-2);
  background: var(--paper);
}

/* selection */
::selection { background: var(--highlight); color: var(--ink); }

/* anchor offset */
:target { scroll-margin-top: 32px; }

/* hr */
hr.divider {
  border: none;
  border-top: 1px dashed var(--rule);
  margin: 40px 0;
}