/* Operant docs / blog reader — the landing page's tokens, a sidebar and a prose column.
   Loaded by landing/docs/index.html and landing/blog/index.html. */
:root {
  --bg: #faf7f5; --surface: #ffffff; --surface-2: #eae6e1; --border: #d7d2cc;
  --text: #222220; --dim: #6b6662; --faint: #837972; --nav-bg: #f4f0ec;
  --accent: #02793d; --accent-strong: #015c2e; --accent-soft: rgba(2,121,61,0.10); --on-accent: #ffffff;
  --warn: #b45309; --warn-bg: rgba(180,83,9,0.10);
  --ground: #222220; --ground-text: #f1ede8; --ground-dim: #a29a93;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'Geist Mono', ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  --display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --radius-control: 6px; --radius-card: 12px; --max: 1160px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); } a:hover { color: var(--accent-strong); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 32px; }

/* header — same as the landing page */
.top { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand { display: flex; align-items: center; gap: 10px; font: 500 22px var(--display); text-decoration: none; color: var(--text); letter-spacing: -0.01em; }
.brand .logo { width: 26px; height: 26px; border-radius: 7px; }
.brand .where { color: var(--dim); font-weight: 400; }
.top nav { display: flex; align-items: center; gap: 26px; font-size: 14.5px; font-weight: 500; }
.top nav a:not(.btn) { text-decoration: none; color: var(--dim); } .top nav a:not(.btn):hover { color: var(--text); }
.top nav a.current { color: var(--text); }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 38px; padding: 0 18px; border-radius: var(--radius-control); font: 600 14px var(--sans); text-decoration: none; }
.btn-accent { background: var(--accent); color: var(--on-accent); } .btn-accent:hover { background: var(--accent-strong); color: var(--on-accent); }

/* layout */
.reader { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 56px; padding: 24px 0 96px; border-top: 1px solid var(--border); }
.side { position: sticky; top: 24px; align-self: start; max-height: calc(100vh - 48px); overflow-y: auto; padding-top: 8px; }
.side h4 { font: 500 12px var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-strong); margin: 22px 0 8px; }
.side h4:first-child { margin-top: 0; }
.side a { display: block; padding: 6px 10px; margin-left: -10px; border-radius: var(--radius-control); font-size: 14px; color: var(--dim); text-decoration: none; line-height: 1.35; }
.side a:hover { color: var(--text); background: var(--surface-2); }
.side a.active { background: var(--accent-soft); color: var(--accent-strong); font-weight: 600; }
.side .home { font-weight: 600; color: var(--text); margin-bottom: 6px; }
.side select { display: none; width: 100%; font: 500 14px var(--sans); color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-control); padding: 9px 10px; }

/* prose */
.prose { max-width: 46em; min-width: 0; }
.prose h1 { font: 500 clamp(32px, 4.5vw, 44px)/1.08 var(--display); letter-spacing: -0.015em; margin: 8px 0 18px; font-variation-settings: "opsz" 48; }
.prose h2 { font: 500 26px/1.2 var(--display); letter-spacing: -0.01em; margin: 44px 0 12px; padding-top: 18px; border-top: 1px solid var(--border); }
.prose h3 { font: 600 17px/1.3 var(--sans); margin: 30px 0 8px; }
.prose h4 { font: 600 14.5px/1.3 var(--sans); margin: 22px 0 6px; }
.prose p { margin: 0 0 14px; }
.prose > p:first-of-type { font-size: 18px; color: var(--dim); }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 14px; }
.prose li { margin: 4px 0; }
.prose li > p { margin: 0; }
.prose blockquote { margin: 18px 0; padding: 12px 18px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 var(--radius-card) var(--radius-card) 0; color: var(--dim); }
.prose blockquote p { margin: 0; }
.prose code { font-family: var(--mono); font-size: 0.88em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
.prose pre { background: var(--ground); color: var(--ground-text); border-radius: var(--radius-card); padding: 16px 20px; font: 400 13px/1.7 var(--mono); overflow-x: auto; margin: 14px 0 20px; }
.prose pre code { background: none; padding: 0; font-size: inherit; color: inherit; }
.prose .table-wrap { overflow-x: auto; margin: 14px 0 20px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; }
.prose th { text-align: left; font-weight: 600; color: var(--dim); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; padding: 6px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.prose td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; line-height: 1.5; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 30px 0; }
.prose img { max-width: 100%; border-radius: var(--radius-card); border: 1px solid var(--border); }
.prose h2 a.anchor, .prose h3 a.anchor { color: var(--faint); text-decoration: none; margin-left: 8px; opacity: 0; font-weight: 400; }
.prose h2:hover a.anchor, .prose h3:hover a.anchor { opacity: 1; }
.prose .notice { background: var(--warn-bg); color: var(--warn); border-radius: var(--radius-card); padding: 14px 18px; font-size: 14px; }
.prose .notice code { background: rgba(0,0,0,0.06); }
.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--border); font-size: 14px; }
.pager a { text-decoration: none; }
.pager .next { margin-left: auto; text-align: right; }
.pager span { display: block; font-size: 12px; color: var(--faint); }
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { padding: 18px 0; border-bottom: 1px solid var(--border); }
.post-list a { font: 500 22px var(--display); text-decoration: none; color: var(--text); }
.post-list .meta { font-size: 13px; color: var(--faint); margin-top: 4px; }
.post-list .blurb { color: var(--dim); margin-top: 6px; }

footer { border-top: 1px solid var(--border); padding: 28px 0 44px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13.5px; color: var(--faint); }
footer a { text-decoration: none; color: var(--dim); }
footer nav { display: flex; gap: 20px; }

@media (max-width: 900px) {
  .wrap { padding: 0 20px; }
  .top nav a:not(.btn) { display: none; }
  .reader { grid-template-columns: 1fr; gap: 24px; }
  .side { position: static; max-height: none; overflow: visible; }
  .side h4, .side a, .side .home { display: none; }
  .side select { display: block; }
}