/* The app's own palette, from DESIGN.md: rail #1C1A18, canvas #23211E, surface #2D2B28,
   hairline #3C3935, accent #77CD97 with dark ink on top. Warm workshop, never cool grey. */
:root {
  --rail: #1c1a18;
  --canvas: #23211e;
  --surface: #2d2b28;
  --raised: #35322e;
  --hairline: #3c3935;
  --accent: #77cd97;
  --accent-dim: rgba(119, 205, 151, 0.14);
  --on-accent: #14231a;
  --ink: #ece8e1;
  --ink-dim: #a9a29a;
  --ink-faint: #776f66;
  --serif: "New York", ui-serif, Iowan Old Style, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", Inter, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --nav-h: 56px;
  --wide: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 24px); }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

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

code { font: 400 0.88em var(--mono); color: var(--accent); }

pre {
  background: var(--rail);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 20px 22px;
  overflow-x: auto;
  font: 400 13.5px/1.75 var(--mono);
  color: var(--ink-dim);
}
pre code { color: inherit; font-size: inherit; }
pre b { color: var(--ink); font-weight: 500; }
pre i { color: var(--ink-faint); font-style: normal; }

/* ── site navigation — the same bar on every page ───────────────────── */

.site {
  position: sticky; top: 0; z-index: 10;
  height: var(--nav-h);
  background: var(--rail);
  border-bottom: 1px solid var(--hairline);
}
.site .in {
  max-width: var(--wide); height: 100%;
  margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; gap: 28px;
}
.site .brand {
  display: flex; align-items: center; gap: 10px;
  font: 500 19px/1 var(--serif); color: var(--ink);
  margin-right: auto;
}
.site .brand img { width: 26px; height: 26px; border-radius: 7px; }
.site .brand:hover { text-decoration: none; }
.site .links { display: flex; align-items: center; gap: 26px; }
.site .links a { font-size: 14.5px; color: var(--ink-dim); padding: 6px 0; position: relative; white-space: nowrap; }
.site .links a:hover { color: var(--ink); text-decoration: none; }
.site .links a[aria-current="page"] { color: var(--ink); }
.site .links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -18px;
  height: 2px; background: var(--accent);
}
.site .links a.button {
  background: var(--accent); color: var(--on-accent);
  font-weight: 600; padding: 8px 16px; border-radius: 999px;
}
.site .links a.button:hover { filter: brightness(1.08); }
.site .links a.button::after { display: none; }

/* ── page frame for the secondary pages ─────────────────────────────── */

.page { max-width: var(--wide); margin: 0 auto; padding: 0 28px 96px; }

.page-head { padding: 56px 0 28px; border-bottom: 1px solid var(--hairline); margin-bottom: 8px; }
.page-head h1 { font: 500 44px/1.1 var(--serif); letter-spacing: -0.02em; margin: 0 0 12px; }
.page-head .lede { font-size: 18px; color: var(--ink-dim); max-width: 60ch; margin: 0; }
.page-head .meta { font: 400 13px/1.6 var(--mono); color: var(--ink-faint); margin: 14px 0 0; max-width: none; }
.page-head .meta a { color: var(--ink-dim); }

/* ── front page hero ────────────────────────────────────────────────── */

main { max-width: 780px; margin: 0 auto; padding: 0 28px 96px; }

header.hero {
  background: var(--rail);
  border-bottom: 1px solid var(--hairline);
  padding: 88px 28px 84px;
  text-align: center;
}

header.hero img.icon {
  width: 116px; height: 116px;
  border-radius: 26px;
  margin-bottom: 26px;
}

h1 {
  font: 500 62px/1 var(--serif);
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.tagline {
  font: 400 21px/1.5 var(--serif);
  color: var(--ink-dim);
  max-width: 40ch;
  margin: 0 auto 34px;
}

.download {
  display: inline-block;
  background: var(--accent);
  color: var(--on-accent);
  font: 600 16px/1 var(--sans);
  padding: 15px 30px;
  border-radius: 999px;
}
.download:hover { text-decoration: none; filter: brightness(1.08); }

.requires {
  margin: 18px auto 0;
  font-size: 13px;
  color: var(--ink-faint);
  font-family: var(--mono);
}

/* ── front page sections ────────────────────────────────────────────── */

section { padding-top: 76px; }

h2 {
  font: 500 32px/1.25 var(--serif);
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

p { max-width: 62ch; }
p.lead { color: var(--ink-dim); }

/* ── the window mock ────────────────────────────────────────────────── */

.window {
  margin-top: 34px;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 168px 1fr;
  background: var(--canvas);
  user-select: none;
}

.window .rail {
  background: var(--rail);
  border-right: 1px solid var(--hairline);
  padding: 14px 10px;
}

.dots { display: flex; gap: 7px; padding: 2px 6px 16px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: var(--hairline); }

.agent {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 8px; border-radius: 8px;
  font-size: 13px; color: var(--ink-dim);
}
.agent.on { background: var(--surface); color: var(--ink); }
.agent .mono {
  width: 22px; height: 22px; border-radius: 50%;
  display: grid; place-items: center;
  font: 600 11px var(--sans);
  background: var(--surface); color: var(--ink-faint);
}
.agent.on .mono { background: var(--accent); color: var(--on-accent); }

.pane { padding: 40px 30px 22px; text-align: center; }
.pane .greet { font: 500 25px/1.3 var(--serif); margin-bottom: 4px; }
.pane .sub { font-size: 13px; color: var(--ink-faint); margin-bottom: 26px; }

.composer {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 13px 13px 10px;
  text-align: left;
}
.composer .ph { font-size: 13.5px; color: var(--ink-faint); padding: 2px 3px 16px; }
.composer .row { display: flex; align-items: center; gap: 8px; }
.composer .chip {
  font: 400 11px var(--sans); color: var(--ink-faint);
  border: 1px solid var(--hairline); border-radius: 999px; padding: 3px 9px;
}
.composer .send {
  margin-left: auto;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--on-accent);
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
}

.cards { display: flex; gap: 8px; margin-top: 16px; }
.cards div {
  flex: 1; text-align: left;
  border: 1px solid var(--hairline); border-radius: 10px;
  padding: 9px 11px; font-size: 11.5px; color: var(--ink-dim);
}

.caption { font-size: 12.5px; color: var(--ink-faint); margin-top: 12px; }

/* ── feature list ───────────────────────────────────────────────────── */

.features { list-style: none; padding: 0; margin: 30px 0 0; }
.features li {
  padding: 22px 0;
  border-top: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 26px;
}
.features li:last-child { border-bottom: 1px solid var(--hairline); }
.features h3 { margin: 0; font: 500 17px/1.5 var(--sans); }
.features p { margin: 0; color: var(--ink-dim); font-size: 15.5px; }

/* ── what's new ─────────────────────────────────────────────────────── */

.changelog .page-head { border-bottom: 0; margin-bottom: 0; }

.month { padding-top: 40px; }
.month > h2 {
  font: 500 15px/1 var(--sans); letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--ink-faint); margin: 0 0 6px; padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline);
}

.release {
  display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 28px;
  padding: 26px 0; border-bottom: 1px solid var(--hairline);
}
.release .meta { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.release .ver {
  font: 500 13px/1 var(--mono); color: var(--ink);
  background: var(--surface); border: 1px solid var(--hairline);
  padding: 6px 9px; border-radius: 6px;
}
.release time { font-size: 13.5px; color: var(--ink-faint); }
.release .tag {
  font: 600 11px/1 var(--sans); letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-dim);
  padding: 5px 8px; border-radius: 999px;
}
.release.latest .ver { color: var(--accent); border-color: var(--accent); }
.release h3 { margin: 2px 0 0; font: 500 19px/1.4 var(--sans); max-width: 62ch; }
.release ul { margin: 12px 0 0; padding-left: 20px; color: var(--ink-dim); font-size: 15.5px; max-width: 66ch; }
.release li { padding: 3px 0; }
.release li::marker { color: var(--ink-faint); }
.release .get { margin: 14px 0 0; font-size: 14.5px; color: var(--ink-dim); }
.release.first h3 { color: var(--ink-dim); font-weight: 400; }

/* ── the guide ──────────────────────────────────────────────────────── */

.guide { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 64px; align-items: start; }

/* Padded to line up with the title on load; the negative offset means that, once stuck, the
   list sits 24px under the bar rather than 64px + 24px. */
.guide .side { position: sticky; top: calc(var(--nav-h) - 40px); padding-top: 64px; max-height: 100vh; overflow-y: auto; }
.guide .side .label {
  font: 500 12px/1 var(--sans); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-faint); margin: 0 0 14px;
}
.guide .side ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--hairline); }
.guide .side li { margin: 0; }
.guide .side a {
  display: block; padding: 5px 0 5px 14px; margin-left: -1px;
  font-size: 14px; line-height: 1.4; color: var(--ink-dim);
  border-left: 1px solid transparent;
}
.guide .side a:hover { color: var(--ink); text-decoration: none; }
.guide .side a.on { color: var(--ink); border-left-color: var(--accent); }

.guide article { min-width: 0; }
.guide article > p, .guide article > ul, .guide article > ol { max-width: 68ch; }
.guide article p { color: var(--ink-dim); }
.guide article p strong { color: var(--ink); }
.guide article > h1 {
  font: 500 30px/1.25 var(--serif); letter-spacing: -0.01em;
  margin: 64px 0 14px; padding-top: 40px; border-top: 1px solid var(--hairline);
}
.guide article > h1:first-of-type { border-top: 0; padding-top: 0; margin-top: 24px; }
.guide article h2 { font: 500 21px/1.35 var(--serif); margin: 40px 0 10px; }
.guide article h3 { font: 500 17px/1.5 var(--sans); margin: 28px 0 8px; }
.guide article hr { display: none; }
.guide article ul, .guide article ol { padding-left: 22px; color: var(--ink-dim); }
.guide article li { padding: 2px 0; }
.guide article strong { color: var(--ink); font-weight: 600; }
.guide article kbd { font: 400 0.88em var(--mono); color: var(--ink); }

.guide table { border-collapse: collapse; width: 100%; margin: 14px 0 26px; font-size: 15px; }
.guide th, .guide td { text-align: left; vertical-align: top; padding: 9px 12px; border-top: 1px solid var(--hairline); }
.guide th { color: var(--ink-faint); font-weight: 500; font-size: 13px; border-top: 0; padding-top: 0; }
.guide tr:last-child td { border-bottom: 1px solid var(--hairline); }
.guide td { color: var(--ink-dim); }
.guide td:first-child { color: var(--ink); white-space: nowrap; }

/* ── footer ─────────────────────────────────────────────────────────── */

footer {
  border-top: 1px solid var(--hairline);
  margin-top: 90px;
  padding: 34px 28px 60px;
  font-size: 13.5px;
  color: var(--ink-faint);
}
footer .in {
  max-width: var(--wide); margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 28px;
}
footer .in .links { display: flex; gap: 22px; }
footer .in .links a { color: var(--ink-dim); }
footer .in .links a:hover { color: var(--ink); }
footer .in .made { margin-left: auto; }
footer p { max-width: none; margin: 0; }

@media (max-width: 900px) {
  .guide { grid-template-columns: 1fr; gap: 0; }
  .guide .side { position: static; padding-top: 40px; }
  .guide .side ul { border-left: 0; columns: 2; column-gap: 26px; }
  .guide .side a { padding-left: 0; border-left: 0; break-inside: avoid; }
  .guide .side a.on { border-left: 0; }
}

@media (max-width: 640px) {
  h1 { font-size: 46px; }
  .page-head h1 { font-size: 36px; }
  .site .in { gap: 16px; padding: 0 20px; }
  .site .links { gap: 16px; }
  .site .links a:not(.button) { font-size: 14px; }
  .site .links a.button { padding: 7px 13px; }
  .page { padding-left: 20px; padding-right: 20px; }
  .window { grid-template-columns: 1fr; }
  .window .rail { display: none; }
  .features li { grid-template-columns: 1fr; gap: 6px; }
  .cards { display: none; }
  .release { grid-template-columns: 1fr; gap: 10px; }
  .release .meta { flex-direction: row; align-items: center; }
  .guide .side ul { columns: 1; }
  .guide td:first-child { white-space: normal; }
  footer .in .made { margin-left: 0; }
}