/* carbon6.dev */

:root {
  --bg: #ffffff;
  --surface: #f5f6f8;
  --surface-2: #eceef2;
  --border: #e2e5ea;
  --text: #14161a;
  --muted: #5a616e;
  --accent: #0379b5;
  --accent-soft: #e3f3fc;
  --accent-ink: #ffffff;
  --code-bg: #f3f4f7;
  --code-text: #1d2129;
  --block-bg: #0e1013;
  --block-text: #e6e8ec;
  --diagram-box: #ffffff;
  --diagram-head: #e9f6fd;
  --shadow: 0 1px 2px rgb(16 24 40 / 0.05), 0 1px 3px rgb(16 24 40 / 0.06);
  --radius: 12px;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --surface: #131417;
    --surface-2: #1a1c20;
    --border: #25282e;
    --text: #e8eaee;
    --muted: #9aa2ae;
    --accent: #38bdf8;
    --accent-soft: #0c2533;
    --accent-ink: #04131b;
    --code-bg: #1a1c21;
    --code-text: #e3e6ea;
    --block-bg: #0f1114;
    --block-text: #e3e6ea;
    --diagram-box: #15171b;
    --diagram-head: #0d2230;
    --shadow: none;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

code { font-family: var(--mono); font-size: 0.88em; }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--accent); color: var(--accent-ink); padding: 6px 12px; border-radius: 6px;
}
.skip:focus { left: 16px; z-index: 10; }

/* ---------------------------------------------------------------- header, footer */

.top {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.top-inner, .bottom-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.top-inner { height: 60px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); font-weight: 650; font-size: 18px; letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand img { border-radius: 7px; display: block; }
.top nav { display: flex; align-items: center; gap: 4px; }
.top nav a {
  color: var(--muted); font-size: 15px; padding: 6px 10px; border-radius: 8px;
  display: inline-flex; align-items: center; gap: 6px;
}
.top nav a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.top nav a[aria-current="page"] { color: var(--text); font-weight: 550; }
.icon { display: inline-flex; }

.bottom {
  margin-top: auto;
  border-top: 1px solid var(--border);
  color: var(--muted); font-size: 14px;
}
.bottom-inner { padding-top: 24px; padding-bottom: 32px; flex-wrap: wrap; }
.bottom a { color: var(--muted); }
.bottom a:hover { color: var(--text); }

main { width: 100%; max-width: 800px; margin: 0 auto; padding: 40px 16px 72px; }
main.wide { max-width: 1200px; }

/* ---------------------------------------------------------------- buttons, code */

.button {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text); font-weight: 550; font-size: 15px;
}
.button:hover { text-decoration: none; background: var(--surface); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button.primary:hover { filter: brightness(1.08); background: var(--accent); }
.button.ghost { border-color: transparent; }

.code { margin: 16px 0; }
.code figcaption { font-size: 13px; color: var(--muted); margin: 0 0 6px; font-weight: 550; }
pre {
  margin: 0; padding: 14px 16px; overflow-x: auto;
  background: var(--block-bg); color: var(--block-text);
  border-radius: 10px; border: 1px solid var(--border);
  font: 13.5px/1.6 var(--mono);
}
pre code { font-size: inherit; background: none; padding: 0; color: inherit; }

/* ---------------------------------------------------------------- home */

.hero { padding: 24px 0 8px; }
.hero-text { max-width: 820px; }
.eyebrow { margin: 0 0 16px; color: var(--muted); font-size: 14px; }
.eyebrow a {
  display: inline-block; padding: 2px 10px; border-radius: 99px;
  background: var(--accent-soft); color: var(--accent); font-weight: 600; margin-right: 4px;
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 56px); line-height: 1.08; letter-spacing: -0.03em;
  margin: 0 0 20px; font-weight: 720;
}
.lede { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }

.diagram {
  margin: 0; padding: 24px; border: 1px solid var(--border);
  border-radius: 16px; background: var(--surface);
}
.diagram-scroll { overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 600px; max-width: 900px; margin: 0 auto; height: auto; }
.diagram figcaption { max-width: 900px; margin: 16px auto 0; color: var(--muted); font-size: 14px; text-align: center; }
.d-box rect { fill: var(--diagram-box); stroke: var(--border); stroke-width: 1.5; }
.d-optional rect { stroke-dasharray: 5 4; }
.d-head rect { fill: var(--diagram-head); stroke: var(--accent); stroke-width: 2; }
.d-head line { stroke: var(--accent); stroke-opacity: 0.35; }
.d-title { font: 600 14px var(--mono); fill: var(--text); }
.d-plain { font-family: var(--sans); }
.d-big { font-size: 22px; fill: var(--accent); }
.d-sub { font: 12.5px var(--sans); fill: var(--muted); }
.d-lines path { stroke: var(--muted); stroke-width: 1.5; fill: none; }
.d-lines .d-dashed { stroke-dasharray: 5 4; }
.d-arrow { fill: var(--muted); }

.band { padding-top: 72px; }
.band > h2, .split h2 { font-size: 28px; letter-spacing: -0.02em; margin: 0 0 24px; }

.section-lede { color: var(--muted); font-size: 18px; max-width: 760px; margin: -8px 0 28px; }

.levers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.lever {
  padding: 26px 28px; border: 1px solid var(--border); border-radius: 16px;
  background: var(--surface);
}
.lever-n { font: 600 13px var(--mono); color: var(--accent); letter-spacing: 0.04em; }
.lever h3 { margin: 6px 0 8px; font-size: 21px; letter-spacing: -0.015em; line-height: 1.3; }
.lever p { margin: 0; color: var(--muted); }
.lever .checks { margin-top: 16px; font-size: 15px; }
.lever .checks li { margin-bottom: 8px; }

.parts { margin-top: 32px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.part { border-top: 2px solid var(--accent); padding-top: 14px; }
.part h3 { margin: 0 0 6px; font-size: 16px; font-weight: 550; color: var(--muted); }
.part h3 code { font-size: 17px; font-weight: 650; color: var(--text); margin-right: 6px; }
.part p { margin: 0; color: var(--muted); font-size: 15px; }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature {
  padding: 20px 22px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); box-shadow: var(--shadow);
}
.feature h3 { margin: 0 0 6px; font-size: 17px; letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; }
.muted { color: var(--muted); }
.checks { list-style: none; padding: 0; margin: 20px 0 0; }
.checks li { position: relative; padding-left: 28px; margin: 0 0 12px; }
.checks li::before {
  content: ""; position: absolute; left: 2px; top: 7px; width: 12px; height: 7px;
  border-left: 2.5px solid var(--accent); border-bottom: 2.5px solid var(--accent);
  transform: rotate(-45deg);
}

/* ---------------------------------------------------------------- prose */

.prose { min-width: 0; }
.prose h1 { font-size: 40px; line-height: 1.15; letter-spacing: -0.025em; margin: 0 0 16px; }
.prose h2 { font-size: 24px; letter-spacing: -0.015em; margin: 48px 0 12px; line-height: 1.3; }
.prose h3 { font-size: 19px; margin: 32px 0 8px; line-height: 1.35; }
.prose h4 { font-size: 16px; margin: 24px 0 8px; }
.prose p, .prose ul, .prose ol, .prose table, .prose blockquote, .prose pre { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 24px; }
.prose li { margin: 4px 0; }
.prose li > ul, .prose li > ol { margin: 4px 0; }
.prose :not(pre) > code {
  background: var(--code-bg); color: var(--code-text);
  padding: 0.12em 0.36em; border-radius: 5px; overflow-wrap: anywhere;
}
.prose blockquote {
  border-left: 3px solid var(--accent); margin-left: 0; padding: 2px 0 2px 16px; color: var(--muted);
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose table {
  display: block; overflow-x: auto; border-collapse: collapse; font-size: 14.5px; max-width: 100%;
}
.prose th, .prose td { border: 1px solid var(--border); padding: 7px 11px; text-align: left; vertical-align: top; }
.prose th { background: var(--surface); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
.prose img { max-width: 100%; }
.prose h2 + p, .prose h3 + p { margin-top: 0; }
.prose .source { margin-top: 56px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 14px; color: var(--muted); }
.prose.center { text-align: center; padding: 48px 0; }
.prose .lede { font-size: 18px; }

.changelog h2 { font-size: 20px; margin-top: 40px; }

/* ---------------------------------------------------------------- docs */

.doc-group { margin-top: 40px; }
.doc-group h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0 0 12px; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.card {
  display: block; padding: 18px 20px; border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); background: var(--bg); box-shadow: var(--shadow);
}
.card:hover { text-decoration: none; border-color: var(--accent); }
.card h3 { margin: 0 0 4px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.doc-layout {
  display: grid; grid-template-columns: 220px minmax(0, 1fr) 220px; gap: 48px; align-items: start;
}
.doc-layout.no-sidebar { grid-template-columns: minmax(0, 1fr) 240px; }
.doc-layout .prose { max-width: 760px; }
.doc-nav, .doc-aside { position: sticky; top: 84px; max-height: calc(100vh - 100px); overflow-y: auto; font-size: 14px; }
.doc-nav-title, .toc-title, .doc-nav-group {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; margin: 0 0 6px;
}
.doc-nav-group { margin-top: 18px; }
.doc-nav-group:first-of-type { margin-top: 0; }
.doc-nav ul, .toc ul { list-style: none; margin: 0; padding: 0; }
.doc-nav a, .toc a { display: block; padding: 4px 10px; border-radius: 6px; color: var(--muted); line-height: 1.4; }
.doc-nav a:hover, .toc a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.doc-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 550; }
.toc { border-left: 1px solid var(--border); padding-left: 6px; }
.toc a { padding: 3px 10px; }

/* ---------------------------------------------------------------- narrower screens */

@media (max-width: 1099px) {
  .doc-layout { grid-template-columns: 200px minmax(0, 1fr); gap: 40px; }
  .doc-layout.no-sidebar { grid-template-columns: minmax(0, 1fr); }
  .doc-aside { display: none; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .parts { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 28px; }
}

@media (max-width: 799px) {
  main { padding-top: 28px; }
  .doc-layout { grid-template-columns: minmax(0, 1fr); }
  /* The docs list follows the doc on a phone. */
  .doc-nav { position: static; max-height: none; order: 2; border-top: 1px solid var(--border); padding-top: 24px; }
  .split { grid-template-columns: minmax(0, 1fr); gap: 56px; }
  .levers { grid-template-columns: minmax(0, 1fr); }
  .lever { padding: 22px 20px; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .band { padding-top: 56px; }
  .prose h1 { font-size: 32px; }
  .diagram { padding: 16px 12px; }
}

@media (max-width: 599px) {
  .features, .parts { grid-template-columns: minmax(0, 1fr); }
  .gh-label { display: none; }
  .top nav a { padding: 6px 7px; }
  .brand span { display: none; }
  .lede { font-size: 17px; }
}