/* qjs-lws site styles. Light palette on :root, dark overrides applied both
   by the media query (guarded so an explicit light choice wins) and by
   [data-theme="dark"] from the header toggle. */

:root {
  --bg: #fbfbfa;
  --bg-raised: #ffffff;
  --bg-sunken: #f2f2f0;
  --bg-code: #f6f6f4;
  --fg: #1b1c1a;
  --fg-muted: #5e625c;
  --fg-faint: #8c918a;
  --line: #e2e3df;
  --line-strong: #cdcfc9;
  --accent: #0b7c72;
  --accent-fg: #ffffff;
  --accent-soft: #e2f2f0;

  --t-kw: #8a3ba8;
  --t-str: #0a7d43;
  --t-num: #b5581a;
  --t-cm: #8c918a;
  --t-fn: #1c5fbe;
  --t-type: #0b7c72;
  --t-atom: #b5581a;
  --t-op: #5e625c;
  --t-var: #b5581a;
  --t-pre: #8a3ba8;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Inter, Roboto, "Helvetica Neue", sans-serif;
  --radius: 8px;
  --w-side: 15rem;
  --w-toc: 13rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14161a;
    --bg-raised: #1a1d22;
    --bg-sunken: #101216;
    --bg-code: #1a1d22;
    --fg: #e6e8e3;
    --fg-muted: #9aa0a6;
    --fg-faint: #6d747b;
    --line: #272b31;
    --line-strong: #3a3f47;
    --accent: #3fd0bd;
    --accent-fg: #0d1114;
    --accent-soft: #17302f;

    --t-kw: #c792ea;
    --t-str: #9ad48a;
    --t-num: #f0a05a;
    --t-cm: #6d747b;
    --t-fn: #82aaff;
    --t-type: #3fd0bd;
    --t-atom: #f0a05a;
    --t-op: #9aa0a6;
    --t-var: #f0a05a;
    --t-pre: #c792ea;
  }
}

:root[data-theme="dark"] {
  --bg: #14161a;
  --bg-raised: #1a1d22;
  --bg-sunken: #101216;
  --bg-code: #1a1d22;
  --fg: #e6e8e3;
  --fg-muted: #9aa0a6;
  --fg-faint: #6d747b;
  --line: #272b31;
  --line-strong: #3a3f47;
  --accent: #3fd0bd;
  --accent-fg: #0d1114;
  --accent-soft: #17302f;

  --t-kw: #c792ea;
  --t-str: #9ad48a;
  --t-num: #f0a05a;
  --t-cm: #6d747b;
  --t-fn: #82aaff;
  --t-type: #3fd0bd;
  --t-atom: #f0a05a;
  --t-op: #9aa0a6;
  --t-var: #f0a05a;
  --t-pre: #c792ea;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 var(--sans);
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 2px; }
a:hover { text-decoration-color: currentColor; }

/* ------------------------------------------------------------------ topbar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0 1.25rem;
  height: 3.5rem;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font: 600 1.05rem/1 var(--mono);
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand .mark { color: var(--accent); margin-right: 0.35rem; }

.topnav { display: flex; gap: 1.25rem; margin-left: auto; font-size: 0.92rem; }
.topnav a { color: var(--fg-muted); text-decoration: none; }
.topnav a:hover { color: var(--fg); }

.themetoggle {
  border: 1px solid var(--line);
  background: var(--bg-raised);
  color: var(--fg-muted);
  border-radius: var(--radius);
  width: 2rem;
  height: 2rem;
  font-size: 0.9rem;
  cursor: pointer;
  line-height: 1;
}
.themetoggle:hover { color: var(--fg); border-color: var(--line-strong); }

/* ------------------------------------------------------------------ layout */

.layout {
  display: grid;
  grid-template-columns: var(--w-side) minmax(0, 1fr) var(--w-toc);
  gap: 2.5rem;
  max-width: 84rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  align-items: start;
}

.sidebar, .toc {
  position: sticky;
  top: 4.5rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  font-size: 0.88rem;
}

.navgroup { margin-bottom: 1.5rem; }
.navgroup h3 {
  margin: 0 0 0.5rem;
  font: 600 0.72rem/1 var(--sans);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.navgroup ul, .toc ul { list-style: none; margin: 0; padding: 0; }
.navgroup li a {
  display: block;
  padding: 0.22rem 0.6rem;
  margin-left: -0.6rem;
  border-radius: 6px;
  color: var(--fg-muted);
  text-decoration: none;
}
.navgroup li a:hover { background: var(--bg-sunken); color: var(--fg); }
.navgroup li a.here { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.toc h3 {
  margin: 0 0 0.5rem;
  font: 600 0.72rem/1 var(--sans);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.toc li a { display: block; padding: 0.16rem 0; color: var(--fg-muted); text-decoration: none; }
.toc li a:hover { color: var(--accent); }
.toc li.lvl3 a { padding-left: 0.9rem; font-size: 0.84rem; }

.doc { min-width: 0; }

/* -------------------------------------------------------------- typography */

.doc h1, .doc h2, .doc h3, .doc h4, .doc h5, .doc h6 {
  line-height: 1.25;
  letter-spacing: -0.015em;
  scroll-margin-top: 5rem;
  position: relative;
}
.doc h1 { font-size: 2.1rem; margin: 0 0 1.5rem; }
.doc h2 { font-size: 1.45rem; margin: 3rem 0 1rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.doc h3 { font-size: 1.12rem; margin: 2rem 0 0.75rem; }
.doc h4 { font-size: 1rem; margin: 1.5rem 0 0.5rem; color: var(--fg-muted); }

.doc h1 code, .doc h2 code, .doc h3 code, .doc h4 code {
  font-size: 0.92em;
  background: none;
  padding: 0;
  border: 0;
  color: inherit;
}

.anchor {
  position: absolute;
  left: -1.1rem;
  color: var(--fg-faint);
  text-decoration: none;
  opacity: 0;
  font-weight: 400;
}
h1:hover > .anchor, h2:hover > .anchor, h3:hover > .anchor, h4:hover > .anchor { opacity: 1; }

.doc p, .doc li { overflow-wrap: break-word; }
.doc ul, .doc ol { padding-left: 1.35rem; }
.doc li { margin: 0.3rem 0; }
.doc li > ul, .doc li > ol { margin: 0.3rem 0; }

.doc hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

/* ---------------------------------------------------------------- code */

code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--bg-code);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.1em 0.35em;
}

.codeblock {
  position: relative;
  margin: 1.25rem 0;
  background: var(--bg-code);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.codeblock[data-lang]::after {
  content: attr(data-lang);
  position: absolute;
  top: 0.45rem;
  right: 0.6rem;
  font: 600 0.65rem/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.codeblock pre { margin: 0; padding: 1rem 1.1rem; overflow-x: auto; }
.codeblock code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--fg);
}

.t-kw { color: var(--t-kw); }
.t-str { color: var(--t-str); }
.t-num { color: var(--t-num); }
.t-cm { color: var(--t-cm); font-style: italic; }
.t-fn { color: var(--t-fn); }
.t-type { color: var(--t-type); }
.t-atom { color: var(--t-atom); }
.t-op { color: var(--t-op); }
.t-var { color: var(--t-var); }
.t-pre { color: var(--t-pre); }
.t-prop, .t-id { color: inherit; }

/* --------------------------------------------------------------- tables */

.tablewrap { overflow-x: auto; margin: 1.25rem 0; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.55rem 0.9rem; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--bg-sunken); font-weight: 600; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }

.editlink { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: 0.88rem; }
.editlink a { color: var(--fg-muted); text-decoration: none; }
.editlink a:hover { color: var(--accent); }

/* -------------------------------------------------------------- landing */

.landing main { max-width: 68rem; margin: 0 auto; padding: 0 1.5rem; }

.hero { padding: 4.5rem 0 3.5rem; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3rem; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.1rem); line-height: 1.1; letter-spacing: -0.03em; margin: 0 0 1rem; }
.hero .lede { font-size: 1.12rem; color: var(--fg-muted); margin: 0 0 1.5rem; max-width: 34rem; }
.hero .codeblock { margin: 0; box-shadow: 0 10px 40px -20px rgba(0, 0, 0, 0.45); }

.eyebrow {
  display: inline-block;
  font: 600 0.7rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.4rem 0.7rem;
  margin-bottom: 1.25rem;
}

.cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--line-strong);
  color: var(--fg);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover { color: var(--accent-fg); filter: brightness(1.08); }

.section { padding: 3.5rem 0; border-top: 1px solid var(--line); }
.section > h2 { font-size: 1.6rem; letter-spacing: -0.02em; margin: 0 0 0.5rem; }
.section > .sub { color: var(--fg-muted); margin: 0 0 2rem; max-width: 44rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1.25rem; }
.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.card h3 { margin: 0 0 0.4rem; font-size: 1rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--fg-muted); font-size: 0.92rem; }
.card .ico { display: block; font-size: 1.1rem; margin-bottom: 0.6rem; color: var(--accent); font-family: var(--mono); }

.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: 2rem; }
.split h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.split p { color: var(--fg-muted); margin: 0 0 1rem; }

.checks { list-style: none; padding: 0; margin: 0; }
.checks li { padding-left: 1.5rem; position: relative; margin: 0.5rem 0; color: var(--fg-muted); }
.checks li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }
.checks strong { color: var(--fg); font-weight: 600; }

.note {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--bg-raised);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  color: var(--fg-muted);
  font-size: 0.92rem;
}
.note strong { color: var(--fg); }

/* ---------------------------------------------------------------- footer */

.sitefoot {
  border-top: 1px solid var(--line);
  padding: 2rem 1.5rem 3rem;
  text-align: center;
  color: var(--fg-faint);
  font-size: 0.85rem;
}
.sitefoot p { margin: 0; }
.sitefoot a { color: var(--fg-muted); }

/* ------------------------------------------------------------ responsive */

@media (max-width: 68rem) {
  .layout { grid-template-columns: var(--w-side) minmax(0, 1fr); }
  .toc { display: none; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 2rem; padding-top: 3rem; }
}

@media (max-width: 48rem) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding-top: 1.25rem; }
  .sidebar {
    position: static;
    max-height: none;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    background: var(--bg-raised);
  }
  .navgroup { margin-bottom: 1rem; }
  .topnav { gap: 0.9rem; font-size: 0.85rem; }
  .topbar { gap: 0.75rem; padding: 0 0.9rem; }
  .doc h1 { font-size: 1.7rem; }
  .anchor { display: none; }
}