/* Blog styles. The colour tokens mirror the ones inlined in /index.html;
   keep the two in step when changing either. */
:root {
  --bg: #0d1117; --fg: #e6edf3; --muted: #8b949e;
  --line: #21262d; --card: #10151d; --off: #1b2230;
  --accent: #f5b83d; --code: #e6edf3;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff; --fg: #1f2328; --muted: #59636e;
    --line: #d1d9e0; --card: #f6f8fa; --off: #ebedf0;
    --accent: #d99a1e; --code: #1f2328;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.mono, code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas,
  "DejaVu Sans Mono", "Liberation Mono", monospace; }

/* Site bar, with the accent line along the top edge of the page. */
.top { border-top: 3px solid var(--accent); border-bottom: 1px solid var(--line); }
.top nav {
  max-width: 44rem; margin: 0 auto; padding: .9rem 1rem;
  display: flex; align-items: baseline; gap: 1.25rem;
}
.top a { color: var(--muted); text-decoration: none; }
.top a:hover, .top a[aria-current] { color: var(--fg); }
.top .home { color: var(--fg); font-weight: 700; font-size: 1.125rem; margin-right: auto; }

main { max-width: 44rem; margin: 0 auto; padding: 3rem 1rem 3rem; }

a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

h1 { margin: 0; font-size: 2.25rem; line-height: 1.2; letter-spacing: -.015em; }
.lede { margin: .75rem 0 0; color: var(--muted); font-size: 1.125rem; }
.date { color: var(--muted); font-size: .875rem; }

/* Post list. */
.posts { list-style: none; margin: 2.5rem 0 0; padding: 0; display: grid; gap: 1rem; }
.posts li {
  position: relative; padding: 1.25rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  transition: border-color .2s;
}
.posts li:hover { border-color: var(--accent); }
.posts h2 { margin: .15rem 0 0; font-size: 1.25rem; line-height: 1.35; }
.posts h2 a { text-decoration: none; }
.posts h2 a::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.posts h2 a:focus-visible { outline: none; }
.posts li:has(a:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.posts p { margin: .35rem 0 0; }

/* Article body. */
article header { margin-bottom: 2.5rem; }
article header .date { margin: 0 0 .5rem; }
.prose { font-size: 1.0625rem; line-height: 1.7; }
.prose h2 { margin: 2.75rem 0 .75rem; font-size: 1.375rem; line-height: 1.3; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.1rem; }
.prose li { margin: .3rem 0; }
.prose code {
  font-size: .875em; padding: .1em .35em;
  background: var(--card); border: 1px solid var(--line); border-radius: 5px;
}
.prose pre {
  margin: 0 0 1.4rem; padding: 1rem 1.1rem; overflow-x: auto;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  font-size: .8125rem; line-height: 1.55; color: var(--code);
}
.prose pre code { padding: 0; background: none; border: 0; font-size: inherit; }
.prose blockquote {
  margin: 0 0 1.4rem; padding: .1rem 0 .1rem 1rem;
  border-left: 3px solid var(--accent); color: var(--muted);
}
.prose table { width: 100%; margin: 0 0 1.4rem; border-collapse: collapse; font-size: .9375rem; }
.prose th, .prose td { padding: .45rem .6rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

/* Diagrams are inline SVG that draw with these classes, so they follow the theme. */
figure { margin: 0 0 1.6rem; }
figure svg { display: block; width: 100%; height: auto; }
figcaption { margin-top: .5rem; color: var(--muted); font-size: .875rem; }
.dg-box { fill: var(--card); stroke: var(--line); stroke-width: 1.5; }
.dg-key { fill: var(--card); stroke: var(--accent); stroke-width: 1.5; }
.dg-line { stroke: var(--muted); stroke-width: 1.5; fill: none; }
.dg-head { fill: var(--muted); }
.dg-text { fill: var(--fg); font: 13px system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.dg-mono { fill: var(--fg); font: 12px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.dg-note { fill: var(--muted); font: 12px system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }

footer { max-width: 44rem; margin: 0 auto; padding: 0 1rem 3rem; color: var(--muted); font-size: .875rem; }
footer a { text-decoration-color: var(--line); }
footer a:hover { color: var(--fg); }

@media (max-width: 34rem) {
  main { padding-top: 2rem; }
  h1 { font-size: 1.75rem; }
}