/* Shared styles for /blog/ and every post. Tokens match the home page. */
:root {
  --bg: #141413;
  --fg: #e9e6dc;
  --body: #cfccc1;
  --dim: #8f8b80;
  --line: rgba(233, 230, 220, 0.1);
  --code-bg: rgba(233, 230, 220, 0.06);
  --inv-bg: #f3f1ea;
  --inv-fg: #141413;
  --accent: #d9775a;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "Inter", ui-sans-serif, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
:root[data-theme="light"] {
  --bg: #f5f3ec;
  --fg: #1f1e1b;
  --body: #34322d;
  --dim: #6f6b62;
  --line: rgba(31, 30, 27, 0.13);
  --code-bg: rgba(31, 30, 27, 0.06);
  --inv-bg: #1f1e1b;
  --inv-fg: #f5f3ec;
  --accent: #c4613f;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--mono); font-size: 15px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; text-align: left; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
kbd { font: inherit; color: var(--dim); }

/* ── Top bar ─────────────────────────────────────── */
.top {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 2rem;
  padding: 2rem 2.4rem 0;
}
.top .mascot { width: 3.8rem; height: auto; display: block; overflow: visible; }
.top nav { display: flex; justify-content: space-around; gap: 1.5rem; flex-wrap: wrap; }
.top nav a { text-decoration: none; text-transform: uppercase; font-size: 0.85rem; letter-spacing: 0.03em; color: var(--dim); }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--fg); }
.top nav a:hover kbd { color: var(--accent); }
.cta { display: inline-block; padding: 0.45rem 0.8rem; background: var(--inv-bg); color: var(--inv-fg); text-decoration: none; font-size: 0.9rem; }
.cta:hover { background: var(--accent); color: #141413; }

/* ── Post header ─────────────────────────────────── */
.grid { display: grid; grid-template-columns: minmax(15rem, 1fr) minmax(0, 44rem) minmax(0, 1fr); column-gap: 2.4rem; padding: 0 2.4rem; }
.grid > .col { grid-column: 2; min-width: 0; }
.post-head { padding: 4.5rem 0 4rem; border-bottom: 1px solid var(--line); }
.post-icon { width: 3.4rem; height: auto; display: block; color: var(--fg); margin-bottom: 1.6rem; }
.tag { display: inline-block; padding: 0.15rem 0.55rem; border: 1px solid var(--line); background: var(--code-bg); font-size: 0.8rem; color: var(--body); }
h1 {
  margin: 1rem 0 0.9rem; font-family: var(--sans); font-weight: 600; letter-spacing: -0.02em;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem); line-height: 1.12;
}
.dek { margin: 0; font-family: var(--sans); font-size: 1.12rem; color: var(--body); max-width: 40rem; }
.meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin: 2.4rem 0 0; }
.meta dt { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--dim); }
.meta dd { margin: 0.3rem 0 0; font-family: var(--sans); font-weight: 500; }
.meta dd::before { content: "\23BF  "; font-family: var(--mono); color: var(--dim); font-weight: 400; }

/* ── Body: rail + article ────────────────────────── */
.body { padding-top: 4rem; }
.rail { grid-column: 1; }
.rail-in {
  position: sticky; top: 0; height: 100svh; padding: 2rem 0 2rem;
  display: flex; flex-direction: column; justify-content: space-between; font-size: 0.85rem;
}
.rail-title { margin: 0 0 1.4rem; font-family: var(--sans); font-weight: 600; font-size: 1.05rem; color: var(--fg); opacity: 0; transition: opacity 0.3s; }
.rail-title.on { opacity: 1; }
.lbl { margin: 0 0 0.6rem; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--dim); }
.tree { list-style: none; margin: 0; padding: 0; }
.tree a { display: block; padding: 0.12rem 0; text-decoration: none; color: var(--body); }
.tree a::before { content: "\23BF  "; color: var(--dim); }
.tree a.sub { padding-left: 1.1rem; }
.tree a:hover { color: var(--fg); }
.tree a.on { color: var(--fg); font-weight: 700; }
.bar { margin: 1.6rem 0 0.8rem; color: var(--dim); white-space: pre; font-variant-numeric: tabular-nums; }
.bar b { color: var(--fg); font-weight: 400; }
.share ul { list-style: none; margin: 0; padding: 0; }
.share a, .share button { display: block; padding: 0.12rem 0; text-decoration: none; color: var(--body); }
.share a::before, .share button::before { content: "\23BF  "; color: var(--dim); }
.share a:hover, .share button:hover { color: var(--accent); }

article { grid-column: 2; min-width: 0; padding-bottom: 5rem; font-family: var(--sans); font-size: 1.08rem; line-height: 1.75; color: var(--body); }
article p, article ul, article ol { margin: 0 0 1.25rem; }
article li { margin-bottom: 0.4rem; }
article h2, article h3 { font-family: var(--mono); color: var(--fg); line-height: 1.35; scroll-margin-top: 1.5rem; }
article h2 { margin: 3rem 0 1rem; font-size: 1.15rem; }
article h3 { margin: 2.2rem 0 0.8rem; font-size: 1rem; }
article a { color: var(--fg); text-underline-offset: 3px; }
article a:hover { color: var(--accent); }
article strong { color: var(--fg); font-weight: 600; }
article code { font-family: var(--mono); font-size: 0.86em; padding: 0.1em 0.35em; background: var(--code-bg); border: 1px solid var(--line); color: var(--fg); }
article pre { margin: 0 0 1.4rem; padding: 1rem 1.1rem; overflow-x: auto; background: var(--code-bg); border: 1px solid var(--line); font-size: 0.85rem; line-height: 1.6; }
article pre code { padding: 0; border: 0; background: none; font-size: inherit; }
article figure { margin: 2.2rem 0; }
article figure img { display: block; width: auto; max-width: 100%; max-height: 36rem; height: auto; margin: 0 auto; border: 1px solid var(--line); background: var(--code-bg); }
article figcaption { margin-top: 0.6rem; font-family: var(--mono); font-size: 0.78rem; line-height: 1.55; color: var(--dim); }
article figcaption .credit { display: block; opacity: 0.8; }
article figcaption a { color: inherit; }
.draft { padding: 0.8rem 1rem; border: 1px dashed var(--accent); font-family: var(--mono); font-size: 0.85rem; color: var(--fg); }
.post-nav { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 0.9rem; }
.post-nav a { text-decoration: none; color: var(--dim); }
.post-nav a:hover { color: var(--fg); }

/* ── Blog index rows ─────────────────────────────── */
.index-head { padding: 4rem 0 2rem; }
.index-head pre { margin: 0; font: inherit; font-size: clamp(0.5rem, 1.25vw, 0.95rem); line-height: 1.2; white-space: pre; overflow: hidden; }
.index-head p { color: var(--dim); max-width: 48ch; }
.rows { list-style: none; margin: 0 0 4rem; padding: 0; border-top: 1px solid var(--line); }
.rows a { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr) auto; gap: 1rem; padding: 0.5rem 0; text-decoration: none; align-items: baseline; }
.rows .d, .rows .m { color: var(--dim); white-space: nowrap; }
.rows .t { font-weight: 500; }
.rows a:hover .t { color: var(--accent); }

/* ── Small screens ───────────────────────────────── */
@media (max-width: 960px) {
  .grid { grid-template-columns: minmax(0, 1fr); padding: 0 1.1rem; }
  .grid > .col, article, .rail { grid-column: 1; }
  .rail-in { position: static; height: auto; padding: 0 0 2rem; border-bottom: 1px solid var(--line); margin-bottom: 2rem; }
  .rail-title, .keys { display: none; }
  .share { margin-top: 1.4rem; }
  .share ul { display: flex; flex-wrap: wrap; gap: 0 1.2rem; }
  .top { grid-template-columns: auto 1fr; padding: 1rem 1.1rem 0; gap: 1rem; }
  .top .cta { display: none; }
  .top nav { justify-content: flex-end; gap: 1rem; }
  .top nav a { font-size: 0.76rem; }
  .top .mascot { width: 2.8rem; }
  .post-head { padding: 2.6rem 0 2.4rem; }
  .body { padding-top: 2rem; }
  .meta { grid-template-columns: 1fr 1fr; }
  .rows a { grid-template-columns: minmax(0, 1fr) auto; gap: 0 0.8rem; }
  .rows .d { grid-column: 1 / -1; font-size: 0.78rem; }
}

/* pixel sprites: fire only shows when the dragon breathes; eyes blink */
svg .fire { opacity: 0; }
svg .eye { animation: blink 4.5s infinite; transform-box: fill-box; transform-origin: center; }
@keyframes blink { 0%, 94%, 100% { transform: scaleY(1); } 96% { transform: scaleY(0.1); } }
@media (prefers-reduced-motion: reduce) { svg .eye { animation: none; } }