:root {
  --bg: #ffffff;
  --fg: #1a1a1f;
  --muted: #5b5b66;
  --accent: #e5322d;
  --border: #e3e3e8;
  --code-bg: #f4f4f7;
  --notice-bg: #fff4d6;
  --notice-fg: #5c4400;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121216;
    --fg: #ececf1;
    --muted: #a0a0ad;
    --accent: #ff6b66;
    --border: #2c2c35;
    --code-bg: #1c1c23;
    --notice-bg: #3a2f10;
    --notice-fg: #ffe9a8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.65 system-ui, -apple-system, "Segoe UI", sans-serif;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.notice {
  background: var(--notice-bg);
  color: var(--notice-fg);
  padding: 0.5rem 1rem;
  text-align: center;
  font-size: 0.9rem;
}

.site-header, main, .site-footer {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1rem;
  padding-top: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.site-title {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--fg);
  text-decoration: none;
}

.site-header nav a { margin-left: 1rem; }

main { padding-top: 2rem; padding-bottom: 3rem; }

h1 { line-height: 1.2; margin: 0 0 0.5rem; }
.lede { color: var(--muted); margin-top: 0; }

.year-heading { margin: 2rem 0 0; font-size: 1rem; color: var(--muted); letter-spacing: 0.05em; }
.post-list { list-style: none; padding: 0; margin: 0.5rem 0 0; }
.post-list li { padding: 1.25rem 0; border-top: 1px solid var(--border); }
.post-list h3 { margin: 0 0 0.25rem; font-size: 1.35rem; line-height: 1.3; }
.post-list p { margin: 0.25rem 0; }

.meta { color: var(--muted); font-size: 0.9rem; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0; margin: 0.5rem 0; }
.tags li {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.05rem 0.65rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.prose pre {
  background: var(--code-bg);
  padding: 1rem;
  overflow-x: auto;
  border-radius: 6px;
  font-size: 0.9rem;
}
.prose code { background: var(--code-bg); padding: 0.1rem 0.3rem; border-radius: 4px; }
.prose pre code { background: none; padding: 0; }
.prose table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 0.4rem 0.7rem; text-align: left; }

.disclosure {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}


.site-footer {
  color: var(--muted);
  font-size: 0.9rem;
  padding-bottom: 2rem;
}

/* Authors, prompts, diagrams */
.ai-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.05rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  vertical-align: middle;
}
.author { padding: 1.25rem 0; border-top: 1px solid var(--border); }
.author h2 { margin: 0; }
.author .role { margin: 0.1rem 0 0.5rem; color: var(--muted); }
.author dl { margin: 0.5rem 0 0; display: grid; grid-template-columns: max-content 1fr; gap: 0.25rem 1rem; }
.author dt { font-weight: 600; }
.author dd { margin: 0; }
.prompt-used { margin: 2rem 0 1rem; border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem 0.9rem; }
.prompt-used summary { cursor: pointer; font-weight: 600; }
.prompt-used pre { white-space: pre-wrap; background: var(--code-bg); padding: 0.75rem; border-radius: 4px; font-size: 0.85rem; overflow-x: auto; }
.prose pre { background: var(--code-bg); padding: 0.75rem; border-radius: 4px; overflow-x: auto; }
.prose table { border-collapse: collapse; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 0.3rem 0.6rem; text-align: left; }
.mermaid { margin: 1.5rem 0; text-align: center; }

/* Explicit, labelled metadata (replaces dot-separated chips) */
dl.meta { display: grid; grid-template-columns: max-content 1fr; gap: 0.15rem 0.75rem; margin: 0.5rem 0; }
dl.meta dt { font-weight: 600; }
dl.meta dd { margin: 0; }