@font-face {
  font-family: "Commit Mono";
  src: url("../vendor/commitmono/CommitMono-VF.woff2") format("woff2-variations");
  font-weight: 200 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Commit Mono";
  src: url("../vendor/commitmono/CommitMono-Italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

:root {
  --bg: #2e2c2f;
  --panel: #343236;
  --panel-2: #403f42;
  --code-bg: #1d1c1e;   /* screen well — darker than the editor bg */
  --line: #3a383c;
  --line-strong: #4a484c;

  --fg: #e1e4dc;
  --dim: #b1b3ad;
  --faint: #69676a;
  --fainter: #47454a;

  --amber: #729b79;
  --amber-soft: #58705e;
  --green: #98cca4;
  --red: #ba5860;

  --mono: "Commit Mono", ui-monospace, "SF Mono", "Cascadia Code",
          "JetBrains Mono", "Fira Code", Menlo, Consolas, "Liberation Mono", monospace;

  --maxw: 52rem;
  --pad: clamp(1.25rem, 4vw, 2rem);
  --space: clamp(2.5rem, 6vw, 4.5rem);

  /* shape + motion (B1) */
  --r-sm: 2px;
  --r-md: 4px;
  --r-lg: 0px;
  --dur-snap: 120ms;
  --dur-fast: 150ms;

  /* spacing ladder (B2); region rulers stay --pad/--space */
  --space-1: 0.125rem;
  --space-2: 0.25rem;
  --space-3: 0.5rem;
  --space-4: 0.75rem;
  --space-5: 1rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 2.5rem;
  --space-9: 3rem;
  --space-10: 4rem;
  --space-20: 8rem; /* home hero break — nothing above it, so it gets the air */

  /* measure (B3) */
  --measure: 72ch;

  /* type scale (C1) — clamp exports */
  --fs-hero: clamp(1.75rem, 5vw, 2.6rem);
  --fs-title: clamp(1.55rem, 4vw, 2.3rem);

  /* ambient washes (C2) */
  --wash: rgba(114,155,121,0.06);
  --sel: rgba(114,155,121,0.28);
  --zebra: rgba(255,255,255,0.02);
}

* { box-sizing: border-box; }

/* visually hidden but still read by screen readers + search */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(1100px 500px at 50% -220px, var(--wash), transparent 60%),
    var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
pre, code, kbd, samp { font-family: var(--mono); } /* pin code to the mono stack */

/* ---------- scrollbar ---------- */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: var(--r-md);
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--amber-soft); }
::-webkit-scrollbar-corner { background: transparent; }
html { scrollbar-color: var(--line-strong) transparent; scrollbar-width: thin; }

::selection { background: var(--sel); color: var(--fg); }

a {
  color: inherit;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 3px;
  transition: color var(--dur-snap) ease;
}
a:hover { color: var(--amber); }
/* B7: plain :focus ring as the old-browser floor; suppressed on mouse clicks
   where :focus-visible exists (progressive enhancement, same spec) */
a:focus,
button:focus,
input:focus,
summary:focus {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}
@supports selector(:focus-visible) {
  a:focus:not(:focus-visible),
  button:focus:not(:focus-visible),
  input:focus:not(:focus-visible),
  summary:focus:not(:focus-visible) {
    outline: none;
  }
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* ---------- layout ---------- */

.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--pad);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* content area grows so the footer sits at the bottom on short pages */
.page > .content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ---------- nav (current section left, other sections + ./ right) ---------- */

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-7);
  padding: var(--space-6) 0 var(--space-4);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.nav .cur-sec {
  margin: 0;
  font-size: var(--fs-title);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.nav-right {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-6);
}
.nav-right a { color: var(--dim); text-decoration: none; }
.nav-right a:hover { color: var(--amber); }
.nav-right .home-link {
  align-self: center;
  display: inline-flex;
  color: var(--amber);
  text-decoration: none;
  transition: color var(--dur-fast) ease;
}
.nav-right .home-link:hover { color: var(--green); }
.nav-right .home-link:hover path:nth-child(2) { fill: var(--amber); } /* the duotone swaps on hover — no flattening */
.nav-right .home-link svg {
  width: 16px;
  height: 16px;
  display: block;
}

/* ---------- hero ---------- */

.hero { margin: var(--space-5) 0 0; } /* sections: the bar above ends in a hairline */

/* home has no nav above — give the hero the big break */
.page.home .hero { margin-top: var(--space-20); }

.hero h1 {
  margin: 0 0 var(--space-3);
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero .greet {
  margin: 0 0 var(--space-3);
  color: var(--dim);
  font-size: 15px;
}

.hero .sub {
  color: var(--dim);
  margin: 0 0 var(--space-6);
  font-size: 15px;
  max-width: var(--measure);
}
.hero .sub p { margin: 0; } /* markdown body wraps in <p> — single paragraph, no extra rhythm */
.hero .sub p + p { margin-top: var(--space-3); } /* blank-line breaks in the body get visible spacing */

/* one quiet hero moment on home: the greeting line settles in */
@media (prefers-reduced-motion: no-preference) {
  .page.home .hero > * {
    animation: rise 420ms cubic-bezier(0.22, 0.9, 0.3, 1) both;
  }
  .page.home .hero .sub { animation-delay: 80ms; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
}

/* ---------- blocks ---------- */

.block { margin-bottom: var(--space); }
.block:last-of-type { margin-bottom: 0; } /* footer's padding-top carries the rhythm (B2) */
/* sections without a hero (no subtitle) still need air below the nav hairline */
.block { margin-top: var(--space-5); }
.hero + .block { margin-top: 0; } /* tags pages keep their hero — no double gap */


/* ---------- rss button (bottom of musings) ---------- */

.list-foot {
  /* pinned to the page bottom; stacks on its own lines everywhere */
  border-top: 0;
  margin-top: auto;
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 14px;
}
.rss-btn {
  color: var(--dim);
  text-decoration: none;
  font-size: 13px;
  transition: color var(--dur-fast) ease;
}
.rss-btn:hover {
  color: var(--amber);
}

/* ---------- simple list (404 links) ---------- */

.links {
  list-style: none;
  margin: var(--space-7) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.links a { color: var(--dim); text-decoration: none; font-size: 14px; }
.links a:hover { color: var(--amber); }

/* ---------- minimal prose ---------- */

p { margin: 0 0 var(--space-5); max-width: var(--measure); }
p.muted { color: var(--dim); }

footer {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 13px;
  display: flex; flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  justify-content: space-between;
}
footer a { color: var(--dim); }
footer a:hover { color: var(--amber); }
.btt {
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--dur-fast) ease, visibility var(--dur-fast);
}
.btt.show { visibility: visible; opacity: 1; }


/* ---------- unified listing cards (posts, musings, projects, tags) ---------- */

.post-list { list-style: none; margin: 0; padding: 0; }
.post-list > li {   /* direct children only — expanded bodies contain nested <li>s (ghost-li trap) */
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--line);
}
.post-list > li:last-child { border-bottom: none; }

.post-list .pt {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.post-list .pd { color: var(--dim); font-size: 13px; }
.post-list .pt-title { text-decoration: none; color: var(--fg); }
.post-list .pt-title b { font-weight: 600; font-size: 15px; color: var(--green); }
.post-list .pt-title:hover b { color: var(--amber); }
.post-list .psub {
  color: var(--dim);
  font-size: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-list .ptags { margin: var(--space-2) 0 0; }
.post-list .tag {
  font-size: 12px;
  color: var(--amber);
  margin-right: var(--space-3);
}
.post-list span.tag { color: var(--fg); } /* inert chips (project tags, #draft) are metadata, not links */
.post-list a.tag:hover { color: var(--green); }
.meta .tag { color: var(--amber); font-size: 12px; }
.source-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  margin-right: var(--space-3);
  vertical-align: middle;
  color: var(--dim);
  text-decoration: none;
}
.source-link svg { width: 16px; height: 16px; }
.source-link:hover { color: var(--green); }
a.tag { text-decoration: none; }
a.tag:hover { color: var(--green); }

/* term-page group labels */
.gh {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 12px;
  color: var(--dim);
  margin: var(--space-6) 0 var(--space-2);
}
.gh:first-child { margin-top: 0; }

/* ---------- post page ---------- */

.post { padding-top: var(--space-6); }

.post h1 {
  margin: 0 0 var(--space-2);
  font-size: var(--fs-title);
  line-height: 1.3;
}
.post .meta {
  color: var(--dim);
  font-size: 13px;
  margin: 0 0 var(--space-7);
}
.article { font-size: 16px; line-height: 1.9; }
.article h2 { font-size: 1.25rem; margin: var(--space-7) 0 var(--space-4); color: var(--fg); }
.article h3 { font-size: 1.125rem; margin: var(--space-6) 0 var(--space-3); color: var(--fg); }
.article h4 { font-size: 1rem; font-weight: 700; margin: var(--space-6) 0 var(--space-3); color: var(--fg); }
.article ul, .article ol { margin: 0 0 var(--space-5); padding-left: var(--space-6); max-width: var(--measure); }
.article li { margin: var(--space-2) 0; }
.article ul li::marker { color: var(--faint); }
.article hr {
  border: 0; border-top: 1px solid var(--line);
  margin: var(--space-7) 0;
}
.article img {
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.article table {
  display: block;
  width: max-content;
  max-width: min(var(--measure), 100%);
  overflow-x: auto;
  margin: var(--space-6) 0;
  font-size: 14px;
  border-collapse: collapse;
}
.article table th, .article table td {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}
.article table th { background: var(--panel-2); color: var(--fg); font-weight: 600; }
.article table tr:nth-child(even) td { background: var(--zebra); }
.article a { overflow-wrap: break-word; }
.article sup a { color: var(--amber); text-decoration: none; }
.article .footnote-definition {
  font-size: 14px;
  color: var(--dim);
  border-top: 1px solid var(--line);
  padding-top: var(--space-4);
  margin-top: var(--space-7);
}
.article .footnote-definition p { margin: var(--space-2) 0; }
.article p { margin: 0 0 var(--space-5); }
.article code {
  background: var(--panel-2); border: 1px solid var(--line);
  padding: 0.125em 0.375em; border-radius: var(--r-sm);
  font-size: 0.92em;
}
.article pre {
  background: var(--code-bg); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: var(--space-5) var(--space-5);
  overflow-x: auto; font-size: 14px; line-height: 1.6;
}
.article pre code { background: none; border: none; padding: 0; }

/* code-block chrome (header + copy injected by app.js) */
.cb-wrap {
  position: relative;
  margin: var(--space-6) 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--code-bg);
  overflow: hidden;
}
.cb-wrap pre {
  margin: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: var(--space-5) var(--space-5);
}
.cb-hdr {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--line);
  background: var(--code-bg);
}
.cb-hdr span {
  margin-left: 0.5rem;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}
.cb-copy {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  transition: color var(--dur-snap) ease, border-color var(--dur-snap) ease;
}
.cb-copy:hover { color: var(--amber); border-color: var(--amber-soft); }
.cb-copy.copied { color: var(--green); border-color: var(--green); }

/* syntax highlighting is server-side (Zola/giallo, class mode →
   giallo.css); keep the code bg transparent to the panel
   (.article pre.z-code beats giallo.css loaded later in <head>) */
.article pre.z-code { background: transparent; }

/* math (KaTeX) */
.article .math-block {
  overflow-x: auto;
  margin: var(--space-6) 0;
  padding: var(--space-4) var(--space-2);
  text-align: center;
}
.katex-display { margin: var(--space-2) 0 !important; font-size: 1.05em; }
.article .katex { font-size: 1.02em; }
.article blockquote {
  margin: var(--space-6) 0; padding: var(--space-2) var(--space-5);
  border-left: 3px solid var(--amber);
  color: var(--dim);
}
.article a { color: var(--green); }
.article a:hover { color: var(--amber); }

.back {
  display: inline-block;
  margin-top: var(--space-8);
  color: var(--dim);
  font-size: 14px;
  text-decoration: none;
}
.back:hover { color: var(--amber); }
.back::before { content: "←"; margin-right: var(--space-3); color: var(--fainter); }

/* ---------- 404 ---------- */

.err .code {
  font-size: 3rem; color: var(--red); font-weight: 700;
  margin: var(--space-6) 0 var(--space-2); letter-spacing: -0.03em;
}
.err p { color: var(--dim); }

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ---------- small screens ---------- */

@media (max-width: 480px) {
  body { font-size: 14px; }
  footer { flex-direction: column; }
  .article table th, .article table td { white-space: normal; }
}

/* ---------- print ---------- */

@media print {
  * {
    background: transparent !important;
    color: #111 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  html { color-scheme: light; }
  body { background: #fff; font-size: 11pt; }
  .nav, .btt, .rss-btn, .cb-hdr, .cb-copy { display: none !important; }
  .page { max-width: none; min-height: 0; padding: 0; }
  .hero h1 { font-size: 16pt; }
  .post h1 { font-size: 14pt; }
  .hero .sub, .article { font-size: 10.5pt; line-height: 1.55; }
  p { max-width: none; }
  a { color: #111 !important; text-decoration: underline; }
  .cb-wrap, .article pre, .article code { border: 1px solid #999; }
  .article pre { white-space: pre-wrap; overflow: visible; word-break: break-word; }
  .back::before { content: none; }
  /* article back-navigation ("all posts") is print chrome — keep the © footer */
  .back { display: none !important; }
}