@font-face {
  font-family: 'Chivo';
  src: url('/assets/fonts/chivo.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JBMono';
  src: url('/assets/fonts/jbmono.woff2') format('woff2');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #eef0f1;
  --surface: #ffffff;
  --surface-2: #e2e6e7;
  --ink: #1a2027;
  --ink-soft: #515a61;
  --ink-faint: #7c858b;
  --accent: #6b4fa0;
  --accent-soft: #e5deef;
  --warn: #a8531f;
  --warn-soft: #f3e2d5;
  --rule: #c7cccd;
  --shadow: rgba(26, 32, 39, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14181b;
    --surface: #1b2126;
    --surface-2: #20272c;
    --ink: #e7eaea;
    --ink-soft: #9aa5aa;
    --ink-faint: #6d7679;
    --accent: #b7a0e8;
    --accent-soft: #362a4d;
    --warn: #e08a4f;
    --warn-soft: #3a2a1e;
    --rule: #2c343a;
    --shadow: rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --bg: #14181b;
  --surface: #1b2126;
  --surface-2: #20272c;
  --ink: #e7eaea;
  --ink-soft: #9aa5aa;
  --ink-faint: #6d7679;
  --accent: #b7a0e8;
  --accent-soft: #362a4d;
  --warn: #e08a4f;
  --warn-soft: #3a2a1e;
  --rule: #2c343a;
  --shadow: rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  margin: 0;
  padding: 0 20px 120px;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.page {
  max-width: 700px;
  margin: 0 auto;
}

/* ---- Site strip ---- */
.site-strip {
  max-width: 700px;
  margin: 0 auto;
  padding: 22px 0 0;
  font-family: 'JBMono', ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-strip a.brand { color: var(--ink); font-weight: 700; letter-spacing: 0.02em; text-decoration: none; }
.site-strip a.brand:hover { color: var(--accent); }
.site-strip a.feed { color: var(--ink-faint); text-decoration: none; }
.site-strip a.feed:hover { color: var(--accent); }
.site-strip .sep { color: var(--rule); }

/* ---- Masthead ---- */
.masthead {
  padding: 40px 0 40px;
  border-bottom: 1px solid var(--rule);
}
.masthead.home { border-bottom: none; padding-bottom: 8px; }
.eyebrow {
  font-family: 'JBMono', ui-monospace, Menlo, Consolas, monospace;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}
h1.title {
  font-family: 'Chivo', ui-sans-serif, sans-serif;
  font-weight: 900;
  font-size: clamp(32px, 5.4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  text-wrap: balance;
}
.dek {
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0;
}
.meta-row {
  margin-top: 28px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: 'JBMono', ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--ink-faint);
}
.meta-row span { display: inline-flex; align-items: center; gap: 6px; }

.series-nav {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--rule);
  font-family: 'JBMono', monospace;
  font-size: 12.5px;
  color: var(--ink-faint);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.series-nav a { color: var(--accent); }
.series-nav .current { color: var(--ink-soft); }

/* ---- Article structure ---- */
article { padding-top: 8px; }

section.block {
  padding: 52px 0;
  border-bottom: 1px solid var(--rule);
}
section.block:last-of-type { border-bottom: none; }

h2.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 22px;
}
h2.section-head .num {
  font-family: 'JBMono', monospace;
  font-size: 13px;
  color: var(--ink-faint);
}
h2.section-head .txt {
  font-family: 'Chivo', sans-serif;
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.005em;
  color: var(--ink);
}

h3.sub-head {
  font-family: 'Chivo', sans-serif;
  font-weight: 700;
  font-size: 17px;
  margin: 30px 0 12px;
  color: var(--ink);
}

p { margin: 0 0 18px; max-width: 66ch; }
p.lede { font-size: 18px; }
ul, ol { margin: 0 0 18px; padding-left: 22px; max-width: 64ch; }
li { margin-bottom: 9px; }
li::marker { color: var(--ink-faint); }
strong { font-weight: 700; }
em { font-style: italic; }

code.inline {
  font-family: 'JBMono', ui-monospace, monospace;
  font-size: 0.86em;
  background: var(--surface-2);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  white-space: nowrap;
}

/* ---- Code / config panels ---- */
.panel {
  margin: 22px 0 26px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 1px 3px var(--shadow);
}
.panel-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: 'JBMono', monospace;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  background: var(--surface-2);
  padding: 8px 10px 8px 14px;
  border-bottom: 1px solid var(--rule);
}
.copy-btn {
  font-family: 'JBMono', monospace;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--ink-faint);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 3px 9px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
  flex-shrink: 0;
}
.copy-btn:hover { color: var(--ink); border-color: var(--ink-faint); }
.copy-btn.copied { color: var(--accent); border-color: var(--accent); }
.panel pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: 'JBMono', ui-monospace, monospace;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
}
.panel pre .c { color: var(--ink-faint); }
.panel pre .k { color: var(--accent); }
.panel pre .s { color: var(--warn); }

/* ---- Callouts ---- */
.callout {
  display: flex;
  gap: 14px;
  margin: 24px 0 28px;
  padding: 18px 20px;
  border-radius: 8px;
  background: var(--warn-soft);
  border: 1px solid color-mix(in srgb, var(--warn) 35%, var(--rule));
  max-width: 66ch;
}
.callout .mark {
  font-family: 'JBMono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warn);
  white-space: nowrap;
  padding-top: 2px;
}
.callout p { margin: 0; font-size: 15.5px; }
.callout p + p { margin-top: 10px; }

.pull-quote {
  margin: 30px 0 30px -20px;
  padding: 4px 0 4px 24px;
  border-left: 3px solid var(--accent);
  max-width: 60ch;
}
.pull-quote p {
  font-family: 'Chivo', sans-serif;
  font-weight: 700;
  font-size: clamp(21px, 3.2vw, 26px);
  line-height: 1.28;
  letter-spacing: -0.005em;
  color: var(--ink);
  text-wrap: balance;
  margin: 0;
}
.pull-quote cite {
  display: block;
  font-style: normal;
  font-family: 'JBMono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
  margin-top: 10px;
}

.principles {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 66ch;
}
.principles li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--surface);
}
.principles li::marker { content: none; }
.principles .pn {
  font-family: 'JBMono', monospace;
  font-size: 12px;
  color: var(--accent);
  padding-top: 2px;
}
.principles .pt { font-size: 15px; }
.principles .pt strong { display: block; font-family: 'Chivo', sans-serif; font-size: 15.5px; margin-bottom: 3px; }

/* ---- Figures ---- */
figure {
  margin: 30px 0 8px;
  padding: 22px 18px 14px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
}
figure svg { width: 100%; height: auto; display: block; overflow: visible; }
figure text { fill: currentColor; font-family: 'JBMono', ui-monospace, monospace; }
figcaption {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
  font-size: 13.5px;
  color: var(--ink-soft);
}

.diagram-overflow { overflow-x: auto; }

/* ---- Memes ---- */
figure.meme {
  margin: 30px 0 28px;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface-2);
  max-width: 420px;
}
figure.meme img { display: block; width: 100%; height: auto; }
figure.meme figcaption {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--rule);
  font-family: 'JBMono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
}

/* ---- Footer ---- */
footer.close {
  padding: 56px 0 40px;
  color: var(--ink-faint);
  font-size: 13.5px;
}
footer.close a { color: var(--ink-faint); }
footer.close a:hover { color: var(--accent); }
footer.close p { margin: 0; max-width: none; }
.footer-prompt {
  margin: 0 0 10px;
  font-family: 'JBMono', monospace;
  font-size: 13px;
  color: var(--ink-faint);
}
.footer-prompt .path { color: var(--ink-soft); }
.footer-prompt .dollar { color: var(--accent); }
.footer-prompt .cursor { animation: blink 1.1s step-end infinite; }
@media (prefers-reduced-motion: reduce) {
  .footer-prompt .cursor { animation: none; }
}
@keyframes blink { 50% { opacity: 0; } }

/* ---- Post index ---- */
.post-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.post-list li {
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
}
.post-list li:first-child { padding-top: 8px; }
.post-list a.post-title {
  font-family: 'Chivo', sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--ink);
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  text-wrap: balance;
}
.post-list a.post-title:hover { color: var(--accent); }
.post-list .post-dek {
  color: var(--ink-soft);
  font-size: 15.5px;
  margin: 0 0 10px;
  max-width: 62ch;
}
.post-list .post-meta {
  font-family: 'JBMono', monospace;
  font-size: 12px;
  color: var(--ink-faint);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 520px) {
  body { font-size: 16px; padding: 0 16px 100px; }
  .masthead { padding: 32px 0 32px; }
  section.block { padding: 40px 0; }
}