/* ============================================================
   spec.css — shared styles for the worker-rendered spec pages
   (the home/tool page in index.html carries its own inline CSS).
   ============================================================ */
:root {
  --ink: #16151a;
  --ink-soft: #4b4a52;
  --muted: #6b6a73;
  --line: #e6e5ea;
  --bg: #fbfbfd;
  --card: #ffffff;
  --accent: #15803d;
  --accent-soft: #dcfce7;
  --req: #b91c1c; --req-bg: #fef2f2;
  --rec: #15803d; --rec-bg: #dcfce7;
  --opt: #525252; --opt-bg: #f3f3f5;
  --avoid: #b45309; --avoid-bg: #fffbeb;
  --radius: 12px;
  --wrap: 760px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --display: "Space Grotesk", var(--font);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3f3f5; --ink-soft: #c9c8d0; --muted: #9d9ca6;
    --line: #2a2930; --bg: #0e0d12; --card: #17161c;
    --accent: #4ade80; --accent-soft: #14321f;
    --req-bg: #2a1414; --rec-bg: #14321f; --opt-bg: #1d1c22; --avoid-bg: #2a2009;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  max-width: var(--wrap); margin: 0 auto; padding: 1.1rem 1.25rem;
}
.site-head .brand { font-family: var(--display); font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.site-head nav a { margin-left: 1rem; color: var(--ink-soft); font-size: .95rem; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 1rem 1.25rem 4rem; }
.back { display: inline-block; margin-bottom: 1rem; color: var(--muted); font-size: .92rem; }

h1 { font-family: var(--display); font-weight: 700; font-size: clamp(1.7rem, 5vw, 2.4rem); line-height: 1.15; margin: .2rem 0 .6rem; }
h2 { font-family: var(--display); font-weight: 600; font-size: 1.4rem; margin: 2rem 0 .6rem; }
h3 { font-weight: 600; font-size: 1.12rem; margin: 1.4rem 0 .4rem; }
.lead { font-size: 1.12rem; color: var(--ink-soft); margin: 0 0 1.5rem; }
.muted { color: var(--muted); }

.cat { border-top: 1px solid var(--line); padding-top: 1.2rem; margin-top: 1.6rem; }
.cat h2 { margin-top: 0; }
ul.items { list-style: none; padding: 0; margin: .8rem 0; }
ul.items li { padding: .55rem 0; border-bottom: 1px solid var(--line); }

.item-head { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; margin-bottom: .3rem; }
.item-head h1 { margin: 0; }

.pill {
  display: inline-block; font-size: .72rem; font-weight: 600; letter-spacing: .02em;
  text-transform: uppercase; padding: .12rem .5rem; border-radius: 999px; vertical-align: middle;
}
.pill-required { color: var(--req); background: var(--req-bg); }
.pill-recommended { color: var(--rec); background: var(--rec-bg); }
.pill-optional { color: var(--opt); background: var(--opt-bg); }
.pill-avoid { color: var(--avoid); background: var(--avoid-bg); }

.prose { font-size: 1.02rem; }
.prose h2 { font-size: 1.3rem; }
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .9em; background: var(--opt-bg); padding: .1rem .35rem; border-radius: 5px;
}
.prose pre {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem; overflow-x: auto; font-size: .88rem; line-height: 1.5;
}
.prose pre code { background: none; padding: 0; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin: .25rem 0; }

.sources { border-top: 1px solid var(--line); margin-top: 2.5rem; padding-top: 1rem; }
.sources ul { list-style: none; padding: 0; }
.sources li { padding: .35rem 0; font-size: .95rem; }

ul.checklist { list-style: none; padding: 0; }
ul.checklist li { padding: .4rem 0; border-bottom: 1px solid var(--line); }
ul.checklist input { margin-right: .5rem; }

.site-foot {
  max-width: var(--wrap); margin: 0 auto; padding: 2rem 1.25rem 3rem;
  border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem;
}