:root {
  --bg: #ffffff; --fg: #1a1a1a; --muted: #6b7280; --accent: #2563eb;
  --border: #e5e7eb; --code-bg: #f6f8fa; --maxw: 44rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}
:root[data-theme="dark"] {
  --bg: #0f1115; --fg: #e6e6e6; --muted: #9aa0aa; --accent: #7aa2f7;
  --border: #242833; --code-bg: #161922;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--fg); font-family: var(--font);
  line-height: 1.6; -webkit-font-smoothing: antialiased;
}
main { max-width: var(--maxw); margin: 0 auto; padding: 2rem 1.25rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header, .site-footer {
  max-width: var(--maxw); margin: 0 auto; padding: 1.25rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.site-header nav { display: flex; gap: 1rem; align-items: center; }
.brand { font-weight: 600; }
.site-footer {
  color: var(--muted); font-size: .85rem;
  border-top: 1px solid var(--border); margin-top: 3rem;
}
.theme-toggle {
  background: none; border: 1px solid var(--border); color: var(--fg);
  border-radius: 6px; cursor: pointer; padding: .15rem .5rem;
}
.post-list { list-style: none; padding: 0; }
.post-list li { padding: .75rem 0; border-bottom: 1px solid var(--border); }
.post-list time { color: var(--muted); font-size: .8rem; font-family: var(--mono); margin-left: .5rem; }
.post-list p { margin: .35rem 0 0; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; margin: 1rem 0; }
.tag {
  font-size: .8rem; font-family: var(--mono); border: 1px solid var(--border);
  border-radius: 999px; padding: .1rem .6rem; color: var(--muted);
}
.tag.active { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.prose { margin-top: 1.5rem; }
.prose pre { background: var(--code-bg); padding: 1rem; border-radius: 8px; overflow: auto; }
.prose code { font-family: var(--mono); font-size: .9em; }
.placeholder { color: var(--muted); font-family: var(--mono); }
.hero h1 { margin-bottom: .25rem; }
.cv .period { color: var(--muted); font-family: var(--mono); font-size: .85rem; }
.cv .xp { margin: 1rem 0; }