/* INFRA Docs — matches the "Bold & editorial" main site: cream ground,
   ink type, lime accent; Bricolage Grotesque headings, Instrument Sans body. */
:root {
  --ink: #111110;
  --cream: #f1efe9;
  --paper: #f8f7f3;
  --muted: #4a4a45;
  --rule: rgba(17, 17, 16, 0.14);
  --lime: #bef264;
  --olive: #3f6212;
  --code-bg: #111110;
  --code-fg: #ecebe4;
  --display: "Bricolage Grotesque", "Instrument Sans", system-ui, sans-serif;
  --body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
}
a { color: var(--ink); text-decoration-thickness: 2px; text-underline-offset: 4px; }
a:hover { color: var(--olive); }
:focus-visible { outline: 3px solid var(--olive); outline-offset: 2px; border-radius: 4px; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 10; background: var(--ink); color: var(--cream); padding: 10px 16px; border-radius: 999px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: rgba(241, 239, 233, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 16px; padding-bottom: 16px; flex-wrap: wrap; }
.brand { font-family: var(--display); font-weight: 800; font-size: 24px; letter-spacing: -0.04em; text-decoration: none; }
.brand .dot { color: var(--olive); }
.brand-sub { font-family: "Instrument Serif", Georgia, serif; font-style: italic; font-weight: 400; letter-spacing: 0; font-size: 24px; }
.header-links { display: flex; align-items: center; gap: 22px; font-size: 15px; flex-wrap: wrap; }
.header-links a { text-decoration: none; color: var(--muted); }
.header-links a:hover { color: var(--ink); }
.header-links .cta { background: var(--ink); color: var(--cream); padding: 9px 18px; border-radius: 999px; font-weight: 600; }
.header-links .cta:hover { background: #2a2a27; color: var(--cream); }

/* Layout */
.layout { display: flex; flex-wrap: wrap; gap: 56px; padding-top: 48px; padding-bottom: 96px; }
.sidebar { flex: 0 0 250px; position: sticky; top: 96px; align-self: flex-start; }
.content { flex: 999 1 560px; min-width: 0; }

.sidebar-label { margin: 0 0 12px; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.sidebar ol { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.sidebar li { border-bottom: 1px solid var(--rule); }
.sidebar a { display: flex; gap: 12px; align-items: baseline; padding: 11px 4px; text-decoration: none; font-size: 15px; font-weight: 500; color: var(--muted); }
.sidebar a:hover { color: var(--ink); }
.sidebar a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.sidebar a[aria-current="page"] .num { background: var(--lime); }
.sidebar .num { font-family: var(--mono); font-size: 12px; color: var(--ink); padding: 1px 5px; border-radius: 4px; }

/* Prose */
.prose { max-width: 760px; overflow-wrap: anywhere; }
.prose pre, .prose table { overflow-wrap: normal; }
.prose h1 {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(40px, 6vw, 72px); line-height: 0.95; letter-spacing: -0.05em;
  margin: 0 0 28px; padding-top: 14px; border-top: 2px solid var(--ink);
}
.prose h2 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(26px, 3vw, 34px); line-height: 1.1; letter-spacing: -0.03em;
  margin: 56px 0 16px;
}
.prose h3 { font-family: var(--display); font-weight: 700; font-size: 21px; letter-spacing: -0.015em; margin: 36px 0 10px; }
.prose .anchor { margin-left: 10px; color: var(--olive); text-decoration: none; opacity: 0; font-weight: 500; }
.prose h2:hover .anchor, .prose h3:hover .anchor, .prose .anchor:focus { opacity: 1; }
.prose p, .prose ul, .prose ol { margin: 0 0 18px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--olive); }
.prose strong { font-weight: 600; }
.prose blockquote {
  margin: 0 0 24px; padding: 18px 22px; background: var(--lime); border-radius: 16px; font-size: 16px;
}
.prose blockquote p { margin: 0; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 40px 0; }

.prose code { font-family: var(--mono); font-size: 0.86em; background: rgba(17, 17, 16, 0.07); padding: 2px 6px; border-radius: 6px; }
.prose pre {
  margin: 0 0 24px; padding: 20px 22px; background: var(--code-bg); color: var(--code-fg);
  border-radius: 18px; overflow-x: auto; font-size: 13.5px; line-height: 1.7;
}
.prose pre code { background: none; padding: 0; font-size: inherit; color: inherit; }

.table-wrap { overflow-x: auto; margin: 0 0 24px; border-top: 2px solid var(--ink); }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; }
.prose th { text-align: left; font-weight: 600; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.prose th, .prose td { padding: 12px 14px 12px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }

/* Pager + machine links */
.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 64px; padding-top: 24px; border-top: 2px solid var(--ink); max-width: 760px; }
.pager a { display: flex; flex-direction: column; gap: 2px; text-decoration: none; font-family: var(--display); font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.pager a span { font-family: var(--body); font-weight: 500; font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.pager .next { text-align: right; margin-left: auto; }
.machine { max-width: 760px; margin-top: 28px; font-size: 14px; color: var(--muted); }

/* Footer */
.site-footer { background: var(--ink); color: var(--cream); }
.site-footer a { color: var(--cream); }
.site-footer code { font-family: var(--mono); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 28px; padding-bottom: 28px; font-size: 14px; opacity: 0.85; }

/* Phones: sidebar becomes a horizontal strip above the content */
@media (max-width: 860px) {
  .layout { gap: 28px; padding-top: 24px; }
  .sidebar { flex-basis: 100%; position: static; min-width: 0; max-width: 100%; }
  .sidebar ol { display: flex; gap: 8px; overflow-x: auto; border-top: 0; padding-bottom: 4px; }
  .sidebar li { border: 0; flex: 0 0 auto; }
  .sidebar a { border: 2px solid var(--ink); border-radius: 999px; padding: 6px 14px; white-space: nowrap; }
  .sidebar a[aria-current="page"] { background: var(--ink); color: var(--cream); }
  .sidebar a[aria-current="page"] .num { background: transparent; color: var(--lime); }
  .header-links a:not(.cta) { display: none; }
}

@media print {
  .site-header, .sidebar, .pager, .site-footer, .machine { display: none; }
  body { background: #fff; }
}