/* OGS for game developers: one stylesheet, no JS. Warm paper by day, a dim living room by night. */
:root {
  --bg: #f6f4ef;
  --paper: #fffdf9;
  --ink: #1b1a1f;
  --ink-2: #5b5864;
  --line: #e2ded5;
  --accent: #c2410c;
  --accent-soft: #fdebe1;
  --code-bg: #f0ede6;
  --mark: linear-gradient(135deg, #f97316, #7c3aed);
  --sans: ui-sans-serif, -apple-system, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131217;
    --paper: #1a1920;
    --ink: #ece9e2;
    --ink-2: #a9a5b2;
    --line: #2d2b35;
    --accent: #fb923c;
    --accent-soft: #33221a;
    --code-bg: #22212a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 var(--sans);
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 2;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: -0.01em; }
.brand .for { font-weight: 500; color: var(--ink-2); }
.mark { width: 22px; height: 22px; border-radius: 7px; background: var(--mark); display: inline-block; }
.raw { font: 600 13px/1 var(--mono); border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; text-decoration: none; color: var(--ink-2); }
.raw:hover { color: var(--accent); border-color: var(--accent); }

.layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  max-width: 1180px;
  margin: 0 auto;
}
.side {
  position: sticky;
  top: 58px;
  align-self: start;
  max-height: calc(100vh - 58px);
  overflow-y: auto;
  padding: 28px 16px 28px 24px;
}
.side ol { list-style: none; margin: 0; padding: 0; counter-reset: page; }
.side li { counter-increment: page; }
.side li a {
  display: flex;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.35;
}
.side li a::before { content: counter(page); font: 600 12px/1.6 var(--mono); color: var(--ink-2); opacity: 0.6; min-width: 1ch; }
.side li a:hover { color: var(--ink); background: var(--code-bg); }
.side li a[aria-current="page"] { color: var(--ink); background: var(--accent-soft); font-weight: 650; }
.side li a[aria-current="page"]::before { color: var(--accent); opacity: 1; }
.agents { margin: 24px 10px 0; font-size: 13px; line-height: 1.5; color: var(--ink-2); }
.agents strong { color: var(--ink); }

main { padding: 28px 40px 80px; min-width: 0; }
article { max-width: 760px; }
article h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.1; letter-spacing: -0.025em; margin: 8px 0 20px; }
article h2 { font-size: 25px; line-height: 1.25; letter-spacing: -0.015em; margin: 48px 0 12px; padding-top: 8px; border-top: 1px solid var(--line); }
article h3 { font-size: 19px; margin: 32px 0 8px; }
article h4 { font-size: 16px; margin: 24px 0 6px; }
article h1, article h2, article h3, article h4 { position: relative; scroll-margin-top: 72px; }
.anchor { position: absolute; left: -1.1em; width: 1em; color: var(--line); text-decoration: none; opacity: 0; font-weight: 400; }
:is(h1, h2, h3, h4):hover .anchor { opacity: 1; }
article p, article ul, article ol { margin: 0 0 14px; }
article li { margin: 4px 0; }
article li > ul, article li > ol { margin: 4px 0; }
article blockquote { margin: 16px 0; padding: 10px 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; }
article blockquote p:last-child { margin: 0; }
article hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

code { font: 0.86em/1.5 var(--mono); background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 5px; overflow-wrap: anywhere; }
pre {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0 0 18px;
}
pre code { background: none; padding: 0; font-size: 13.5px; line-height: 1.6; overflow-wrap: normal; }
/* Prose in a code block (the agent prompt): wrap it, so it reads and copies whole. */
pre:has(code.language-text) { white-space: pre-wrap; border-color: var(--accent); background: var(--accent-soft); }
pre code.language-text { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; }

table { display: block; overflow-x: auto; border-collapse: collapse; margin: 0 0 20px; font-size: 14.5px; line-height: 1.5; max-width: 100%; }
th, td { text-align: left; vertical-align: top; padding: 8px 12px; border-bottom: 1px solid var(--line); }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); border-bottom-width: 2px; white-space: nowrap; }
td code { white-space: nowrap; }

.pager { display: flex; justify-content: space-between; gap: 16px; max-width: 760px; margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); }
.pager a { display: flex; flex-direction: column; text-decoration: none; font-weight: 650; }
.pager a span { font: 600 11px/1.8 var(--mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); }
.pager a[rel="next"] { text-align: right; margin-left: auto; }

@media (max-width: 860px) {
  body { font-size: 16px; }
  .top { padding: 12px 16px; }
  .brand .for { display: none; }
  .layout { display: block; }
  .side { position: static; max-height: none; padding: 12px 16px 0; border-bottom: 1px solid var(--line); }
  .side ol { display: flex; flex-wrap: wrap; gap: 4px; }
  .side li a { padding: 6px 10px; font-size: 14px; border: 1px solid var(--line); }
  .agents { margin: 12px 0 14px; }
  main { padding: 20px 16px 64px; }
  .anchor { display: none; }
}