/* Shared styles for blog pages. The landing page keeps its own inline styles;
   blog pages (blog/index.html and blog/<slug>.html) link this file so every
   post stays consistent without duplicating the datasheet system. */

@font-face { font-family: "Plex Mono"; src: url(fonts/plexmono-400.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url(fonts/plexmono-500.woff2) format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url(fonts/plexmono-600.woff2) format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url(fonts/plexmono-italic-400.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }

:root {
  --bg: #0a0e14;
  --bg-2: #0d1219;
  --line: #1b232e;
  --line-2: #29323f;
  --ink: #c9d3df;
  --dim: #828f9e;
  --faint: #57626f;
  --accent: #4d8bf5;
  --green: #41b866;
  --red: #e05a51;
  --amber: #d9a032;
  --mono: "Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: #fff; }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 3px; border-radius: 1px; }
::selection { background: rgba(77,139,245,0.3); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* ---- nav ---- */
nav {
  position: sticky; top: 0; z-index: 40;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  width: min(1080px, 94vw); margin: 0 auto;
  display: flex; align-items: center; height: 52px;
}
.brand { font-weight: 600; font-size: 13.5px; letter-spacing: -0.2px; }
.brand .prompt { color: var(--accent); font-weight: 400; }
.nav-links { margin-left: auto; display: flex; align-items: baseline; gap: 26px; }
.nav-links a {
  color: var(--dim); font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase;
  padding: 17px 0;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.gh { color: var(--ink); }
.nav-links a.gh:hover { color: var(--accent); }

/* ---- ruled column ---- */
.rail {
  width: min(1080px, 94vw); margin: 0 auto;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  min-height: calc(100vh - 52px - 120px);
}
.page { padding: 0 52px 64px; }

/* ---- page head ---- */
.crumbs { padding-top: 44px; font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--faint); }
.crumbs a { color: var(--dim); }
.crumbs a:hover { color: var(--ink); }
.crumbs .sep { margin: 0 8px; color: var(--line-2); }
h1 {
  font-size: clamp(24px, 3.4vw, 34px); line-height: 1.2; margin: 16px 0 0;
  letter-spacing: -0.7px; font-weight: 600; max-width: 30ch;
}
.post-meta {
  margin: 14px 0 0; font-size: 10.5px; letter-spacing: 1.8px; text-transform: uppercase;
  color: var(--faint); display: flex; gap: 10px; flex-wrap: wrap;
}
.post-meta .d { color: var(--line-2); }
.lead { color: var(--dim); max-width: 62ch; margin: 18px 0 0; }

/* ---- post index: dotted leaders ---- */
.post-list { margin: 40px 0 0; border: 1px solid var(--line); }
.post-row {
  display: flex; align-items: baseline; gap: 14px;
  padding: 16px 22px; font-size: 13.5px;
  border-bottom: 1px solid var(--line);
}
.post-row:last-child { border-bottom: none; }
.post-row:hover { background: var(--bg-2); }
.post-row .date { color: var(--faint); font-size: 12px; flex-shrink: 0; }
.post-row .dots { flex: 1; border-bottom: 1px dotted var(--line-2); transform: translateY(-4px); min-width: 24px; }
.post-row .t { font-weight: 500; text-align: right; }
.post-row:hover .t { color: #fff; }
.index-note { margin: 18px 0 0; font-size: 12px; color: var(--faint); }
.index-note a { color: var(--dim); text-decoration: underline; text-underline-offset: 3px; }
.index-note a:hover { color: var(--ink); }

/* ---- article body ---- */
article { max-width: 72ch; }
article .sec-label {
  font-size: 10.5px; letter-spacing: 2.2px; text-transform: uppercase; color: var(--dim);
  display: block; margin: 46px 0 0;
}
article .sec-label i { font-style: normal; color: var(--accent); margin-right: 8px; }
article h2 { font-size: 19px; letter-spacing: -0.3px; margin: 10px 0 12px; font-weight: 600; }
article p { color: var(--ink); margin: 0 0 16px; }
article p.quiet { color: var(--dim); }
article ul, article ol { margin: 0 0 16px; padding-left: 22px; color: var(--ink); }
article li { margin: 4px 0; }
article li::marker { color: var(--faint); }
article b, article strong { color: #fff; font-weight: 600; }
article em { color: var(--dim); }
article a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
article a:hover { color: var(--accent); }
article code {
  font-family: var(--mono); font-size: 12.5px; padding: 1px 5px; border-radius: 3px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink);
}
article pre {
  background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 4px;
  padding: 16px 18px; overflow-x: auto; font-size: 12.5px; line-height: 1.7;
  margin: 0 0 16px; color: var(--ink);
}
article pre code { background: none; border: none; padding: 0; }
article pre .g { color: var(--green); }
article pre .r { color: var(--red); }
article pre .c { color: var(--faint); }
article hr { border: none; border-top: 1px solid var(--line); margin: 36px 0; }
figure.fig {
  border: 1px solid var(--line-2); border-radius: 4px; background: var(--bg-2);
  padding: 14px 14px 4px; margin: 0 0 16px;
}
.fig { overflow-x: auto; }
/* min-width keeps chart labels legible on phones; the figure scrolls instead */
.fig svg { display: block; width: 100%; min-width: 540px; height: auto; }
.fig-caption { font-size: 11.5px; color: var(--faint); font-style: italic; padding: 8px 4px 8px; }
kbd {
  font-family: var(--mono); font-size: 11px; padding: 2px 6px; border-radius: 3px;
  background: var(--bg-2); border: 1px solid var(--line-2); color: var(--ink);
  white-space: nowrap;
}
.post-foot {
  margin: 52px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line);
  font-size: 12.5px; color: var(--dim); max-width: 72ch;
}
.post-foot a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.post-foot a:hover { color: var(--accent); }

/* ---- footer ---- */
footer { border-top: 1px solid var(--line); }
.foot-in {
  width: min(1080px, 94vw); margin: 0 auto; padding: 26px 52px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center;
  font-size: 12.5px; color: var(--dim);
  border-left: 1px solid var(--line); border-right: 1px solid var(--line);
}
.foot-in a { color: var(--dim); text-decoration: underline; text-underline-offset: 3px; }
.foot-in a:hover { color: var(--ink); }
.foot-links { display: flex; gap: 22px; }
.manline {
  width: min(1080px, 94vw); margin: 0 auto; padding: 14px 52px 32px;
  display: flex; justify-content: space-between;
  font-size: 10px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--faint);
  border-left: 1px solid var(--line); border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

@media (max-width: 900px) {
  .page { padding-left: 22px; padding-right: 22px; }
  .foot-in, .manline { padding-left: 22px; padding-right: 22px; }
  .manline .mid { display: none; }
  .post-row { flex-wrap: wrap; }
  .post-row .dots { display: none; }
  .post-row .t { text-align: left; width: 100%; }
}