/* ThinWindow documentation site. Plain CSS, no build step, no external
   requests: system fonts only, so the site never phones home either. */

:root {
  --blue: #0447ad;
  --orange: #f56403;
  --paper: #fbf9f4;
  --surface: #ffffff;
  --ink: #16181d;
  --ink-2: #4c5160;
  --ink-3: #6b7080;
  --line: #e4e0d6;
  --line-2: #d3cec2;
  --code-bg: #f3f0e8;
  --blue-soft: #e8eefa;
  --orange-soft: #fdeee3;
  --link: var(--blue);
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sidebar: 264px;
  --measure: 46rem;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --blue: #5b8ff0;
    --orange: #ff8a3d;
    --paper: #121317;
    --surface: #1a1c21;
    --ink: #eceae4;
    --ink-2: #b7b8be;
    --ink-3: #8d8f98;
    --line: #2a2d34;
    --line-2: #3a3e47;
    --code-bg: #1f2127;
    --blue-soft: #18243d;
    --orange-soft: #33200f;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 1.5rem; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--link); text-underline-offset: 2px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; border-radius: 3px; }

.skip {
  position: absolute; left: -999px; top: 0; padding: .5rem .75rem;
  background: var(--surface); border: 1px solid var(--line-2); z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- Layout ---------- */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky; top: 0; align-self: start;
  height: 100vh; overflow-y: auto;
  padding: 1.5rem 1.25rem 2rem;
  border-right: 1px solid var(--line);
}

.brand {
  display: flex; align-items: center; gap: .65rem;
  color: var(--ink); text-decoration: none;
  font-weight: 650; font-size: 1.05rem; letter-spacing: -.01em;
  margin-bottom: 1.75rem;
}
.brand img { width: 32px; height: 32px; }
.brand small {
  display: block; font-weight: 450; font-size: .75rem; color: var(--ink-3);
  font-family: var(--mono); letter-spacing: 0;
}

.nav-group { margin-bottom: 1.35rem; }
.nav-group h2 {
  margin: 0 0 .4rem; font-size: .7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3);
}
.nav-group ol { list-style: none; margin: 0; padding: 0; }
.nav-group a {
  display: block; padding: .22rem .6rem; margin-left: -.6rem;
  border-left: 2px solid transparent;
  color: var(--ink-2); text-decoration: none; font-size: .9rem;
}
.nav-group a:hover { color: var(--ink); border-left-color: var(--orange); }

.sidebar-foot {
  margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line);
  font-size: .8rem; color: var(--ink-3);
}
.sidebar-foot a { color: var(--ink-2); }

main { padding: 3rem clamp(1.25rem, 5vw, 4.5rem) 5rem; }
.content { max-width: var(--measure); }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: static; height: auto; border-right: 0;
    border-bottom: 1px solid var(--line); padding: 1rem 1rem 1.25rem;
  }
  .sidebar nav { display: grid; grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr)); gap: 0 1rem; }
  .brand { margin-bottom: 1rem; }
  .sidebar-foot { display: none; }
  main { padding: 2rem 1rem 4rem; }
}

/* ---------- Hero ---------- */

.hero {
  display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; align-items: center;
  padding-bottom: 2.25rem; margin-bottom: 2.5rem; border-bottom: 1px solid var(--line);
}
.hero img { width: 96px; height: 96px; }
.hero h1 { margin: 0; font-size: clamp(1.9rem, 4vw, 2.5rem); line-height: 1.1; letter-spacing: -.025em; }
.hero .lede { margin: .5rem 0 0; font-size: 1.15rem; color: var(--ink-2); }
.hero .lede strong { color: var(--ink); }
@media (max-width: 560px) {
  .hero { grid-template-columns: 1fr; gap: 1rem; }
  .hero img { width: 72px; height: 72px; }
}

/* ---------- Sections and type ---------- */

section { margin: 0 0 3.5rem; }

section > h2 {
  display: flex; align-items: baseline; gap: .7rem;
  margin: 0 0 1rem; font-size: 1.45rem; letter-spacing: -.015em; line-height: 1.25;
}
section > h2 .num {
  font: 500 .8rem var(--mono); color: var(--orange);
  border: 1px solid currentColor; border-radius: 4px; padding: .05rem .35rem;
  transform: translateY(-2px);
}
h3 { margin: 2rem 0 .6rem; font-size: 1.08rem; letter-spacing: -.01em; }
h4 { margin: 1.4rem 0 .4rem; font-size: .95rem; }

p, ul, ol { margin: 0 0 1rem; }
li { margin: .25rem 0; }
li > ul { margin: .25rem 0 0; }

code {
  font: .86em var(--mono);
  background: var(--code-bg); border: 1px solid var(--line);
  border-radius: 4px; padding: .08em .32em;
}
pre {
  margin: 0 0 1.25rem; padding: .9rem 1rem; overflow-x: auto;
  background: var(--code-bg); border: 1px solid var(--line); border-radius: 8px;
  font: .84rem/1.6 var(--mono);
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

.muted { color: var(--ink-3); }
.small { font-size: .86rem; }

/* ---------- Tables ---------- */

.table-wrap { overflow-x: auto; margin: 0 0 1.25rem; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: .55rem .8rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
tr:last-child td { border-bottom: 0; }
th { font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); background: var(--paper); }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.win { color: var(--orange); font-weight: 600; }

/* ---------- Callouts ---------- */

.callout {
  margin: 0 0 1.25rem; padding: .9rem 1.1rem;
  border: 1px solid var(--line); border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0; background: var(--surface);
}
.callout.warn { border-left-color: var(--orange); }
.callout > :last-child { margin-bottom: 0; }
.callout strong:first-child { display: block; margin-bottom: .2rem; }

/* ---------- Cards ---------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: .9rem; margin: 0 0 1.5rem; }
.card {
  padding: 1rem 1.1rem; background: var(--surface);
  border: 1px solid var(--line); border-radius: 10px;
}
.card h3 { margin: 0 0 .35rem; font-size: 1rem; display: flex; align-items: center; gap: .5rem; }
.card p { margin: 0; font-size: .92rem; color: var(--ink-2); }
.card .tag { font: 500 .7rem var(--mono); color: var(--ink-3); border: 1px solid var(--line-2); border-radius: 999px; padding: 0 .45rem; }

/* ---------- Formula ---------- */

.formula {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .6rem 1rem;
  margin: 0 0 1.5rem; padding: 1.25rem; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--line);
  font: 500 1.15rem var(--mono);
}
.formula .op { color: var(--ink-3); }
.formula .term { padding: .2rem .6rem; border-radius: 6px; }
.formula .ctx { background: var(--blue-soft); color: var(--blue); }
.formula .turns { background: var(--orange-soft); color: var(--orange); }

/* ---------- Figures ---------- */

figure { margin: 0 0 1.75rem; }
figcaption { margin-top: .5rem; font-size: .84rem; color: var(--ink-3); }
.figure-box { padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.figure-box img { display: block; width: 100%; height: auto; }

.illustration svg { display: block; width: 100%; height: auto; }
.illustration .axis { stroke: var(--line-2); stroke-width: 1; }
.illustration .base { fill: var(--line-2); }
.illustration .read { fill: var(--blue); }
.illustration .read-small { fill: var(--orange); }
.illustration text { fill: var(--ink-2); font: 12px var(--sans); }
.illustration .title { fill: var(--ink); font-weight: 600; font-size: 13px; }

/* ---------- Workflow ---------- */

.flow { display: grid; gap: .6rem; margin: 0 0 1.5rem; }
.flow-step {
  display: grid; grid-template-columns: 2rem 1fr; gap: .8rem; align-items: start;
  padding: .85rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
}
.flow-step .dot {
  width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center;
  font: 600 .8rem var(--mono); color: #fff; background: var(--blue);
}
.flow-step.tw .dot { background: var(--orange); }
.flow-step h3 { margin: .15rem 0 .2rem; font-size: .98rem; }
.flow-step p { margin: 0; font-size: .92rem; color: var(--ink-2); }
.outcomes { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: .5rem; margin-top: .6rem; }
.outcomes div { padding: .5rem .7rem; border: 1px dashed var(--line-2); border-radius: 8px; font-size: .86rem; color: var(--ink-2); }
.outcomes b { display: block; color: var(--ink); font-size: .84rem; }

/* ---------- Examples ---------- */

.example { margin: 0 0 1rem; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--surface); }
.example .call, .example .result { padding: .7rem 1rem; }
.example .call { border-bottom: 1px solid var(--line); background: var(--paper); font: .86rem var(--mono); }
.example .call::before { content: "agent → "; color: var(--ink-3); }
.example .result { font-size: .92rem; color: var(--ink-2); }
.example .result b { color: var(--orange); font-weight: 600; }

/* ---------- Details / FAQ ---------- */

details { border-top: 1px solid var(--line); padding: .75rem 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
details > p { margin: .6rem 0 0; color: var(--ink-2); }

/* ---------- Footer ---------- */

.page-foot {
  margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: center;
  font-size: .85rem; color: var(--ink-3);
}
.page-foot img { width: 20px; height: 20px; vertical-align: -4px; margin-right: .35rem; }
.page-foot a { color: var(--ink-2); }