/* LangChef documentation. Generated shell, hand-written type scale.
   Three theme states: bare :root is light, prefers-color-scheme handles the
   unstamped default, [data-theme] wins over both. */

:root {
  --paper:   #FCFCFD;
  --surface: #FFFFFF;
  --sunk:    #F1F3F5;
  --ink:     #14171C;
  --muted:   #5A6270;
  --faint:   #858C99;
  --rule:    #E4E7EC;
  --accent:  #0E5D66;
  --accent-soft: #E2F0F1;
  --pass:    #2C7A57;
  --refuse:  #A8442A;
  --hold:    #8A6D3B;

  --serif: Spectral, Georgia, "Times New Roman", serif;
  --sans:  "Source Sans 3", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:   #0E1013;
    --surface: #15181D;
    --sunk:    #0A0C0F;
    --ink:     #E8EAEE;
    --muted:   #9BA3B0;
    --faint:   #737B88;
    --rule:    #262A31;
    --accent:  #5FC7CF;
    --accent-soft: #12292C;
    --pass:    #5FBF92;
    --refuse:  #E0876B;
    --hold:    #D0AE6A;
  }
}
:root[data-theme="dark"] {
  --paper:   #0E1013;
  --surface: #15181D;
  --sunk:    #0A0C0F;
  --ink:     #E8EAEE;
  --muted:   #9BA3B0;
  --faint:   #737B88;
  --rule:    #262A31;
  --accent:  #5FC7CF;
  --accent-soft: #12292C;
  --pass:    #5FBF92;
  --refuse:  #E0876B;
  --hold:    #D0AE6A;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---- frame ---- */
.shell { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.topbar {
  border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
}
.topbar .shell { display: flex; align-items: center; gap: 28px; height: 62px; }
.wordmark {
  font-family: var(--serif); font-weight: 600; font-size: 21px;
  letter-spacing: -0.01em; color: var(--ink); text-decoration: none;
  display: flex; align-items: baseline; gap: 9px; white-space: nowrap;
}
.wordmark .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.topnav { display: flex; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.topnav a {
  font-size: 15px; color: var(--muted); text-decoration: none;
  padding: 4px 0; border-bottom: 2px solid transparent;
}
.topnav a:hover { color: var(--ink); }
.topnav a.here { color: var(--ink); border-bottom-color: var(--accent); }

.layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 56px; padding: 44px 0 96px; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; gap: 28px; } }

.sidebar { font-size: 15px; }
@media (min-width: 861px) { .sidebar { position: sticky; top: 90px; align-self: start; } }
.sidebar h4 {
  font-family: var(--sans); font-size: 11px; font-weight: 700;
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--faint);
  margin: 0 0 10px;
}
.sidebar ul { list-style: none; margin: 0 0 26px; padding: 0; display: flex; flex-direction: column; gap: 7px; }
.sidebar a { color: var(--muted); text-decoration: none; }
.sidebar a:hover { color: var(--accent); }

main { min-width: 0; max-width: 76ch; }

/* ---- type ---- */
h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(32px, 5vw, 44px); line-height: 1.12;
  letter-spacing: -0.015em; margin: 0 0 14px; text-wrap: balance;
}
h2 {
  font-family: var(--serif); font-weight: 600; font-size: 26px;
  line-height: 1.25; letter-spacing: -0.01em;
  margin: 52px 0 12px; padding-top: 22px; border-top: 1px solid var(--rule);
  text-wrap: balance;
}
h3 { font-family: var(--sans); font-weight: 600; font-size: 18px; margin: 32px 0 8px; }
p { margin: 0 0 16px; }
.lede { font-size: 20px; line-height: 1.55; color: var(--muted); margin-bottom: 26px; }
.eyebrow {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
}
a { color: var(--accent); text-underline-offset: 2px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin: 6px 0; }
strong { font-weight: 600; }
hr { border: none; border-top: 1px solid var(--rule); margin: 40px 0; }

code {
  font-family: var(--mono); font-size: 0.86em;
  background: var(--sunk); padding: 1.5px 5px; border-radius: 3px;
}
pre {
  font-family: var(--mono); font-size: 13.5px; line-height: 1.62;
  background: var(--sunk); border: 1px solid var(--rule);
  padding: 16px 18px; margin: 0 0 20px; overflow-x: auto;
  border-radius: 4px;
}
pre code { background: none; padding: 0; font-size: inherit; }
pre .c { color: var(--faint); }
pre .g { color: var(--pass); }
pre .r { color: var(--refuse); }
pre .o { color: var(--hold); }
pre .a { color: var(--accent); }

/* ---- components ---- */
.hero { padding: 18px 0 8px; }
.thesis {
  font-family: var(--serif); font-style: italic; font-size: 21px;
  line-height: 1.5; color: var(--muted);
  border-left: 2px solid var(--accent); padding-left: 20px; margin: 0 0 30px;
}
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 8px; }
.btn {
  font-size: 15px; font-weight: 600; text-decoration: none;
  padding: 9px 18px; border-radius: 4px; border: 1px solid var(--accent);
}
.btn.solid { background: var(--accent); color: var(--paper); }
.btn.ghost { color: var(--accent); }
.btn:hover { opacity: 0.88; }

.callout {
  background: var(--surface); border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  padding: 16px 20px; margin: 0 0 22px; border-radius: 0 4px 4px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout .k {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 6px;
}
.callout.warn { border-left-color: var(--hold); }
.callout.warn .k { color: var(--hold); }

.answer {
  border-left: 2px solid var(--accent); padding-left: 15px;
  color: var(--muted); margin: 0 0 26px; font-size: 16px;
}
.answer strong { color: var(--ink); }

.scroller { overflow-x: auto; margin: 0 0 22px; }
table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.11em;
  text-transform: uppercase; color: var(--faint); border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
td.mono, td.num { font-family: var(--mono); font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }

.pill {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  padding: 2px 7px; border-radius: 3px; white-space: nowrap;
}
.pill.yes { color: var(--pass); background: color-mix(in srgb, var(--pass) 14%, transparent); }
.pill.no  { color: var(--faint); background: var(--sunk); }

.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin: 0 0 24px; }
.panel { background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 18px 20px; }
.panel h3 { margin-top: 0; }
.panel p:last-child { margin-bottom: 0; }

/* ---- sidebar search ---- */
.search { position: relative; display: flex; align-items: center; margin: 0 0 22px; }
.search input {
  width: 100%; font: inherit; font-size: 14px; color: var(--ink);
  background: var(--surface); border: 1px solid var(--rule); border-radius: 4px;
  padding: 7px 30px 7px 10px;
}
.search input::placeholder { color: var(--faint); }
.search kbd {
  position: absolute; right: 8px; font-family: var(--mono); font-size: 11px;
  color: var(--faint); border: 1px solid var(--rule); border-radius: 3px;
  padding: 0 4px; pointer-events: none;
}
#results { font-size: 14.5px; margin-bottom: 26px; }
#results h5 {
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--faint); margin: 14px 0 6px;
}
#results a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; }
#results a:hover { color: var(--accent); }
#results .none { color: var(--faint); margin: 6px 0; }
.sidebar a[aria-current="page"] { color: var(--accent); font-weight: 600; }

/* ---- reference pages ---- */
.worked {
  background: var(--surface); border: 1px solid var(--rule);
  border-left: 3px solid var(--accent); border-radius: 0 4px 4px 0;
  padding: 18px 20px; margin: 0 0 24px;
}
.worked .k {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 8px;
}
.worked p:last-child, .worked pre:last-child { margin-bottom: 0; }
.reading { font-size: 15px; }
.reading li { margin: 12px 0; }
.reading .where {
  display: block; font-family: var(--mono); font-size: 12.5px;
  color: var(--muted); margin-top: 3px;
}
.incode {
  font-family: var(--mono); font-size: 13px; background: var(--sunk);
  border: 1px solid var(--rule); border-radius: 4px; padding: 12px 14px; margin: 0 0 22px;
}
.incode div { padding: 2px 0; }
.incode b { color: var(--accent); font-weight: 500; }

/* ---- reference sequence ---- */
.onward {
  display: flex; gap: 14px; margin: 56px 0 0; padding-top: 26px;
  border-top: 1px solid var(--rule); flex-wrap: wrap;
}
.onward a {
  flex: 1 1 44%; min-width: 200px; text-decoration: none;
  border: 1px solid var(--rule); border-radius: 5px; padding: 13px 16px;
  color: var(--ink); font-family: var(--sans); font-size: 15px; font-weight: 500;
  background: var(--surface);
}
.onward a:hover { border-color: var(--accent); color: var(--accent); }
.onward a span {
  display: block; font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 4px;
}
.onward .next { text-align: right; margin-left: auto; }

footer.site {
  border-top: 1px solid var(--rule); padding: 26px 0 60px;
  color: var(--faint); font-size: 14.5px;
}
footer.site .shell { display: flex; flex-wrap: wrap; gap: 8px 28px; align-items: baseline; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }