/* ============================================================================
   orion — shared editorial design system
   Used by the tour (site/index.html), the concept subpages (site/concepts/*),
   and ported (tokens + skin) into the Cloudflare console (example-tenant-cf).
   One stylesheet so every surface reads as one product.
   ========================================================================== */

:root {
  --ink: #1a1714;
  --ink-soft: #4a443d;
  --faint: #8a8178;
  --paper: #faf7f2;
  --rule: #e3dccf;
  --accent: #9a3b2e;
  --accent-soft: #c08a45;
  --code-bg: #f3eee4;
  --tab-bg: #ece4d5;
  --card: #fffdf9;
  --ok: #3f6f4a;
  --info: #2f5e8a;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "Hoefler Text", Georgia, serif;
  --mono: "SF Mono", "Berkeley Mono", "JetBrains Mono", ui-monospace, "Menlo", monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.62;
  font-feature-settings: "liga" 1, "kern" 1, "onum" 1;
}
.wrap { max-width: 46rem; margin: 0 auto; padding: 5.5rem 1.6rem 7rem; }

/* ---- Masthead ---- */
.mast { text-align: center; margin-bottom: 3.5rem; }
.kicker {
  font-variant: small-caps;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  font-size: 0.82rem;
  color: var(--faint);
  margin: 0 0 1.1rem;
}
h1 { font-size: 4.4rem; line-height: 1; margin: 0; font-weight: 600; letter-spacing: -0.02em; }
.tag { margin: 1.1rem 0 0; font-style: italic; font-size: 1.35rem; color: var(--ink-soft); }
.lede { margin: 2.4rem auto 0; max-width: 34rem; font-size: 1.18rem; color: var(--ink-soft); }
.star { color: var(--accent); }

/* ---- Section structure ---- */
h2 {
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 3.6rem 0 0.2rem;
  padding-top: 2.4rem;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 1.5rem;
}
h2 .num { font-style: italic; color: var(--accent); font-size: 1.1rem; margin-right: 0.6rem; vertical-align: 0.15em; }
h3 { font-size: 1.12rem; font-weight: 600; margin: 2rem 0 0.3rem; }
p { margin: 0.9rem 0; }
.sub { color: var(--ink-soft); }
strong { font-weight: 600; }
em { color: var(--ink-soft); }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(154, 59, 46, 0.3); }
a:hover { border-bottom-color: var(--accent); }

/* ---- Status tags ---- */
.tagchip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.12em 0.5em;
  border-radius: 1em;
  vertical-align: 0.18em;
  margin-left: 0.5rem;
  font-weight: 500;
}
.t-built { background: #e6efe6; color: #3f6f4a; border: 1px solid #c4ddc4; }
.t-plan { background: #f2ead9; color: #9a6b1e; border: 1px solid #e1d2ad; }
.legend { text-align: center; font-size: 0.82rem; color: var(--faint); margin-top: 1.8rem; }
.legend .tagchip { margin-left: 0.3rem; }

/* ============================================================================
   Layout with sticky side-navigation (the tour)
   ========================================================================== */
.layout { display: grid; grid-template-columns: 17.5rem minmax(0, 1fr); gap: 0; max-width: 66.5rem; margin: 0 auto; }
.layout .wrap { margin: 0; max-width: 46rem; }

.sidenav {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  padding: 5.5rem 1.4rem 3rem 1.6rem;
  border-right: 1px solid var(--rule);
  font-size: 0.86rem;
}
.sidenav .brand {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.2rem;
  display: block;
  border: none;
  color: var(--ink);
}
.sidenav .brand .star { color: var(--accent); }
.sidenav .brand-tag { color: var(--faint); font-style: italic; font-size: 0.82rem; margin: 0 0 1.8rem; }
.sidenav ol { list-style: none; padding: 0; margin: 0; counter-reset: nav; }
.sidenav li { margin: 0; }
.sidenav a {
  display: block;
  padding: 0.28rem 0.6rem 0.28rem 0;
  color: var(--ink-soft);
  border: none;
  border-left: 2px solid transparent;
  padding-left: 0.8rem;
  line-height: 1.35;
  transition: color 0.12s, border-color 0.12s;
}
.sidenav a:hover { color: var(--ink); }
.sidenav a.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }
.sidenav .nav-num { font-family: var(--mono); font-size: 0.72rem; color: var(--accent-soft); margin-right: 0.45rem; }
.sidenav .nav-group { font-variant: small-caps; letter-spacing: 0.1em; color: var(--faint); font-size: 0.74rem; margin: 1.4rem 0 0.4rem 0.8rem; }

/* ---- The loop diagram (text version) ---- */
.loop { margin: 2rem 0; text-align: center; font-family: var(--mono); font-size: 0.86rem; color: var(--ink-soft); line-height: 1.5; }
.loop .chain { display: inline-flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.55rem 0.7rem; }
.loop .node { border: 1px solid var(--rule); background: #fff; border-radius: 0.5rem; padding: 0.45rem 0.8rem; white-space: nowrap; }
.loop .node b { color: var(--ink); font-family: var(--serif); font-weight: 600; }
.loop .arrow { color: var(--accent); font-size: 1.1rem; }
.loop .back { margin-top: 0.7rem; font-style: italic; font-family: var(--serif); color: var(--faint); font-size: 0.95rem; }

/* ---- Inline SVG diagram frame ---- */
figure.diagram { margin: 2rem 0; text-align: center; }
figure.diagram svg { max-width: 100%; height: auto; }
figure.diagram figcaption { font-size: 0.9rem; color: var(--faint); font-style: italic; margin-top: 0.7rem; }
.dg-box { fill: #fff; stroke: var(--rule); }
.dg-box-accent { fill: var(--card); stroke: var(--accent-soft); }
.dg-label { font-family: var(--serif); font-size: 15px; fill: var(--ink); }
.dg-sub { font-family: var(--mono); font-size: 11px; fill: var(--faint); }
.dg-arrow { stroke: var(--accent); stroke-width: 1.5; fill: none; }
.dg-arrowhead { fill: var(--accent); }

/* ---- Two-column compare cards ---- */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin: 1.6rem 0; }
.card { border: 1px solid var(--rule); border-radius: 0.6rem; padding: 1.1rem 1.25rem; background: var(--card); }
.card h4 { margin: 0 0 0.5rem; font-size: 1.02rem; font-weight: 600; }
.card p { margin: 0; font-size: 0.96rem; color: var(--ink-soft); }
.card .kind { font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); display: block; margin-bottom: 0.35rem; }

/* Three-up tier cards (belt / patterns / recipes) */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin: 1.6rem 0; }
.tiers .card h4 { color: var(--accent); }

/* ---- Code ---- */
pre { background: var(--code-bg); border: 1px solid var(--rule); border-radius: 0.6rem; padding: 1.1rem 1.3rem; overflow-x: auto; font-family: var(--mono); font-size: 0.83rem; line-height: 1.6; margin: 1.4rem 0; color: #33302b; }
code { font-family: var(--mono); font-size: 0.88em; background: var(--code-bg); padding: 0.08em 0.34em; border-radius: 0.3rem; }
pre code { background: none; padding: 0; font-size: 1em; }
.c-key { color: var(--accent); }
.c-com { color: var(--faint); font-style: italic; }
.c-str { color: var(--ok); }
.c-fn { color: var(--info); }
.caption { font-size: 0.92rem; color: var(--faint); font-style: italic; margin: -0.7rem 0 1.6rem; }

/* ---- Pure-CSS tabs ---- */
.tabs { margin: 1.5rem 0; }
.tabs > input { position: absolute; opacity: 0; pointer-events: none; }
.tablist { display: flex; flex-wrap: wrap; gap: 0.3rem; border-bottom: 1px solid var(--rule); margin-bottom: -1px; }
.tablist label { font-family: var(--mono); font-size: 0.76rem; padding: 0.4rem 0.85rem; cursor: pointer; border: 1px solid transparent; border-bottom: none; border-radius: 0.45rem 0.45rem 0 0; color: var(--ink-soft); background: var(--tab-bg); user-select: none; }
.tablist label:hover { color: var(--ink); }
.tabs .panel { display: none; }
.tabs .panel pre { margin: 0; border-top-left-radius: 0; }
#h-node:checked ~ .tablist label[for="h-node"],
#h-hono:checked ~ .tablist label[for="h-hono"],
#h-bun:checked ~ .tablist label[for="h-bun"],
#h-deno:checked ~ .tablist label[for="h-deno"],
#h-cf:checked ~ .tablist label[for="h-cf"] { background: var(--code-bg); border-color: var(--rule); color: var(--accent); font-weight: 500; }
#h-node:checked ~ .panels .p-node,
#h-hono:checked ~ .panels .p-hono,
#h-bun:checked ~ .panels .p-bun,
#h-deno:checked ~ .panels .p-deno,
#h-cf:checked ~ .panels .p-cf { display: block; }

/* ---- API list ---- */
.api { margin: 1.4rem 0; }
.api .row { display: grid; grid-template-columns: 11rem 1fr; gap: 1rem; padding: 0.7rem 0; border-top: 1px solid var(--rule); }
.api .row:last-child { border-bottom: 1px solid var(--rule); }
.api .sig { font-family: var(--mono); font-size: 0.82rem; color: var(--accent); padding-top: 0.1rem; }
.api .desc { color: var(--ink-soft); font-size: 0.98rem; }

/* ---- Data table ---- */
table.grid { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.92rem; }
table.grid th, table.grid td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.grid th { font-weight: 600; font-size: 0.82rem; color: var(--ink); border-bottom: 1.5px solid var(--accent-soft); }
table.grid td { color: var(--ink-soft); }
table.grid td:first-child, table.grid th:first-child { color: var(--ink); font-weight: 500; }
table.grid code { font-size: 0.84em; }

/* ---- Pulled principle / aside ---- */
.principle { margin: 2rem 0; padding: 1.3rem 1.5rem; border-left: 3px solid var(--accent); background: var(--card); font-style: italic; font-size: 1.12rem; color: var(--ink); }
.aside { margin: 1.8rem 0; padding: 1rem 1.3rem; border: 1px solid var(--rule); border-radius: 0.6rem; background: var(--card); font-size: 0.96rem; color: var(--ink-soft); }
.aside .aside-label { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); display: block; margin-bottom: 0.35rem; }

/* ---- Clean list ---- */
ul.clean { list-style: none; padding: 0; margin: 1.2rem 0; }
ul.clean li { padding: 0.55rem 0 0.55rem 1.6rem; position: relative; border-top: 1px solid var(--rule); color: var(--ink-soft); }
ul.clean li:first-child { border-top: none; }
ul.clean li::before { content: "✦"; position: absolute; left: 0; top: 0.55rem; color: var(--accent); font-size: 0.8rem; }
ul.clean li b { color: var(--ink); }

/* ---- Link pills: read more / see it live ---- */
.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.3rem 0 0.4rem; }
.pill { display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.02em; padding: 0.42rem 0.9rem; border-radius: 2em; border: 1px solid var(--rule); background: #fff; color: var(--ink-soft); }
.pill:hover { border-color: var(--accent-soft); color: var(--ink); }
.pill.live { border-color: var(--accent-soft); color: var(--accent); }
.pill.live::before { content: "◉"; color: var(--accent); }
.pill .arr { color: var(--accent); }

/* ---- Screenshot figure ---- */
figure.shot { margin: 2rem 0; }
figure.shot img { width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 0.6rem; box-shadow: 0 1px 14px rgba(26, 23, 20, 0.06); display: block; }
figure.shot figcaption { font-size: 0.9rem; color: var(--faint); font-style: italic; margin-top: 0.7rem; text-align: center; }

/* ============================================================================
   Subpage chrome
   ========================================================================== */
.crumb { font-family: var(--mono); font-size: 0.78rem; color: var(--faint); margin: 0 0 1.4rem; }
.crumb a { border: none; color: var(--accent); }
.subhead { margin-bottom: 2.4rem; }
.subhead .kicker { text-align: left; }
.subhead h1 { font-size: 2.9rem; text-align: left; line-height: 1.05; }
.subhead .tag { text-align: left; margin-top: 0.8rem; font-size: 1.18rem; }

/* ---- Footer / CTA ---- */
.cta { margin-top: 4rem; padding-top: 2.4rem; border-top: 1px solid var(--rule); text-align: center; }
.cta p { font-size: 1.12rem; color: var(--ink-soft); }
.cta .ask { font-style: italic; font-size: 1.25rem; color: var(--ink); margin-bottom: 1.4rem; }
.colophon { margin-top: 3rem; text-align: center; font-size: 0.82rem; color: var(--faint); font-variant: small-caps; letter-spacing: 0.08em; }

/* ============================================================================
   Responsive
   ========================================================================== */
@media (max-width: 880px) {
  .layout { display: block; }
  .sidenav { position: static; height: auto; border-right: none; border-bottom: 1px solid var(--rule); padding: 2.5rem 1.6rem 1.5rem; }
  .sidenav ol { columns: 2; }
  .layout .wrap { margin: 0 auto; }
  .tiers { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  h1 { font-size: 3rem; }
  .subhead h1 { font-size: 2.3rem; }
  .wrap { padding: 3.5rem 1.2rem 4rem; }
  .cols { grid-template-columns: 1fr; }
  .api .row { grid-template-columns: 1fr; gap: 0.2rem; }
  table.grid { font-size: 0.84rem; }
  table.grid th, table.grid td { padding: 0.5rem 0.4rem; }
  .sidenav ol { columns: 1; }
}