/* Hurray site shell — teal/emerald brand theme (ADR-028 OQ-3 resolved).
   Neutrals carry a faint teal-cool bias so they read as chosen, not default grey.
   Light default; dark via prefers-color-scheme. */

:root {
  --bg: #ffffff;
  --fg: #12201e;
  --muted: #566b67;
  --border: #d8e6e2;
  --surface: #f3f8f7;
  --accent: #0d9488;      /* teal-600 — links, buttons, highlighted logo cell */
  --accent-fg: #ffffff;   /* text/glyph on an accent fill */
  --max: 52rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1413;
    --fg: #e7efed;
    --muted: #8fa39f;
    --border: #223330;
    --surface: #111e1c;
    --accent: #2dd4bf;    /* teal-400 — brighter for the dark ground */
    --accent-fg: #08201d;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.6;
  font-size: 17px;
}

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; }
.brand-mark { height: 1.7rem; width: auto; display: block; }
.brand-mark text { font-family: var(--mono); font-size: 34px; font-weight: 600; }
.bm-cell { fill: var(--accent); }
.bm-grid { fill: none; stroke: var(--border); stroke-width: 2; }
.bm-ink { fill: var(--fg); }
.bm-invert { fill: var(--accent-fg); }
.site-nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.site-nav a { color: var(--muted); font-size: 0.95rem; }
.site-nav a:hover { color: var(--fg); text-decoration: none; }

/* Content */
.content { padding-top: 2.5rem; padding-bottom: 4rem; }
.prose { max-width: var(--max); }
.prose h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 1rem; }
.prose h2 { margin-top: 2.25rem; border-bottom: 1px solid var(--border); padding-bottom: .3rem; }
.prose code { font-family: var(--mono); background: var(--surface); padding: .1em .35em; border-radius: 4px; font-size: .9em; }
.prose pre { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose table { border-collapse: collapse; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: .5rem .75rem; text-align: left; }
.prose blockquote { border-left: 3px solid var(--border); margin: 1rem 0; padding: .25rem 1rem; color: var(--muted); }

/* Hero */
.hero { padding: 3rem 0 1.5rem; border-bottom: 1px solid var(--border); margin-bottom: 2.5rem; }
.hero h1 { font-size: 2.75rem; line-height: 1.05; margin: 0 0 .75rem; letter-spacing: -0.02em; }
.hero .tagline { font-size: 1.25rem; color: var(--muted); max-width: 40rem; margin: 0 0 1.75rem; }
.cta { display: flex; gap: .75rem; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: .6rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--fg);
  font-weight: 600;
  font-size: .95rem;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.05); }

/* Blog list */
.post-list { list-style: none; padding: 0; }
.post-list li { padding: 1rem 0; border-bottom: 1px solid var(--border); }
.post-list a { font-size: 1.15rem; font-weight: 600; }
.post-list time { display: block; color: var(--muted); font-size: .85rem; margin-top: .2rem; }
.post-list p { margin: .35rem 0 0; color: var(--muted); }
.byline { color: var(--muted); font-size: .9rem; margin-top: -.5rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; padding: 2rem 0; margin-top: 3rem; }
.site-footer a { color: var(--muted); text-decoration: underline; }