/* Swiss layout: dark cinematic hero, white editorial body, hairline rules, 12-col max 80rem. */
:root {
  --ink: #1e2124;
  --ink-deep: #0d0e10;
  --paper: #ffffff;
  --mist: #f3f3f3;
  --slate: #666666;
  --silver: #aaaaaa;
  --rule: #d9d9d9;
  --on-ink-muted: #9a9ea3;

  --sans: "Instrument Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --max: 80rem;
  --gutter: clamp(1rem, 3vw, 1.667rem);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --ease-io: cubic-bezier(.645, .045, .355, 1);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.45;
  font-feature-settings: "tnum", "lnum";
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img, svg, canvas { max-width: 100%; display: block; }
:focus-visible { outline: 1px solid currentColor; outline-offset: 4px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); }

/* Earmark: small widely-spaced uppercase label */
.earmark {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

/* ---------- Page transitions ---------- */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: vt-out 160ms var(--ease) both; }
::view-transition-new(root) { animation: vt-in 280ms var(--ease) both; }
@keyframes vt-out { to { opacity: 0; } }
@keyframes vt-in { from { opacity: 0; transform: translateY(8px); } }

/* ---------- Header ---------- */
.site-head {
  view-transition-name: site-header;
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 3.5rem; gap: 1rem; }
.brand { white-space: nowrap; display: flex; align-items: center; gap: .7rem; font-size: .95rem; letter-spacing: .01em; }
.brand canvas { width: 1.6rem; height: 1.6rem; }
.head-links { display: flex; gap: .5rem; }
.ghost {
  display: inline-flex; align-items: center; gap: .5rem;
  border: 1px solid currentColor;
  padding: .5rem .85rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase;
  transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease), transform 120ms var(--ease);
}
.site-head .ghost { border-color: rgba(255,255,255,.35); }
.site-head .ghost:hover, .site-head .ghost[aria-current="page"] { background: var(--paper); color: var(--ink); border-color: var(--paper); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(120% 90% at 78% 40%, #2a2e32 0%, var(--ink) 45%, var(--ink-deep) 100%);
  color: var(--paper);
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: center;
  gap: var(--gutter);
  padding-block: clamp(4rem, 10vw, 8rem) clamp(3.5rem, 8vw, 6rem);
}
.hero h1 {
  margin: 1.25rem 0 0;
  font-weight: 400;
  font-size: clamp(2.75rem, 7vw, 5.55rem);
  line-height: 1.04;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.hero .earmark { color: var(--on-ink-muted); }
.hero p.lede {
  margin: 1.75rem 0 0;
  max-width: 34rem;
  font-size: 1.05rem;
  line-height: 1.5;
  color: #c9cccf;
}
.hero-mark { position: relative; aspect-ratio: 1; width: 100%; max-width: 30rem; justify-self: end; }
.hero-mark canvas { width: 100%; height: 100%; }
.hero.compact .wrap { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); padding-block: clamp(3rem, 7vw, 5rem); }
.hero.compact .hero-mark { max-width: 15rem; }

/* Line-mask headline reveal */
.reveal-lines .line { display: block; overflow: hidden; padding-bottom: .06em; }
.reveal-lines .line > span { display: block; }
.js .reveal-lines .line > span { transform: translateY(105%); transition: transform .8s var(--ease); }
.js.is-ready .reveal-lines .line > span { transform: none; }
.reveal-lines .line:nth-child(2) > span { transition-delay: .06s; }
.reveal-lines .line:nth-child(3) > span { transition-delay: .12s; }

.js .fade-in { opacity: 0; transform: translateY(12px); transition: opacity .46s var(--ease) .28s, transform .46s var(--ease) .28s; }
.js.is-ready .fade-in { opacity: 1; transform: none; }

/* ---------- Sections ---------- */
section.block { padding-block: clamp(3.5rem, 8vw, 6rem); }
.block-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.block-head h2 { margin: 0; font-weight: 400; font-size: clamp(1.6rem, 3vw, 1.9rem); letter-spacing: -.02em; }

/* Animated hairline divider */
.rule { height: 1px; background: var(--ink); }
.js .rule { transform: scaleX(0); transform-origin: left; transition: transform .8s var(--ease); }
.js .rule.in { transform: scaleX(1); }

/* Scroll reveal */
.js [data-reveal] { opacity: 0; transform: translateY(12px); transition: opacity .42s var(--ease), transform .42s var(--ease); }
.js [data-reveal].in { opacity: 1; transform: none; }

/* ---------- Project list ---------- */
.list { list-style: none; margin: 0; padding: 0; }
.row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr) auto;
  gap: var(--gutter);
  align-items: baseline;
  padding: 1.6rem 0 1.7rem;
  color: var(--ink);
}
.row::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(to right, var(--ink) 0 50%, var(--rule) 50% 100%);
  background-size: 200% 100%;
  background-position: 100% 0;
  transition: background-position .42s var(--ease);
}
.row:hover::after, .row:focus-visible::after { background-position: 0 0; }
.row-title { font-size: clamp(1.4rem, 2.6vw, 1.9rem); font-weight: 400; letter-spacing: -.02em; line-height: 1.15; }
.row-desc { color: var(--slate); max-width: 36rem; }
.row-meta { display: block; margin-top: .45rem; }
.arrow {
  width: 2.4rem; height: 2.4rem;
  display: inline-grid; place-items: center;
  border: 1px solid var(--rule);
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}
.arrow svg { width: .95rem; height: .95rem; transition: transform 240ms var(--ease); }
.row:hover .arrow, .row:focus-visible .arrow { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.row:hover .arrow svg, .row:focus-visible .arrow svg { transform: translateX(3px); }
.row[aria-disabled="true"] { cursor: default; }
.row[aria-disabled="true"] .arrow { opacity: .35; }
.row[aria-disabled="true"]:hover::after { background-position: 100% 0; }
.row[aria-disabled="true"]:hover .arrow { background: none; border-color: var(--rule); color: var(--ink); }

.ghost:active, .arrow:active, .split a:active, .plus:active, .tab:active { transform: scale(.985); }

/* ---------- Split CTA ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; }
.split a {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem;
  min-height: 11rem; padding: 2rem var(--gutter);
  font-weight: 400; font-size: clamp(1.4rem, 2.6vw, 1.9rem); letter-spacing: -.02em;
  transition: background-color 180ms var(--ease), transform 120ms var(--ease);
}
.split a:first-child { background: var(--mist); }
.split a:first-child:hover { background: #e9e9e9; }
.split a:last-child { background: var(--ink); color: var(--paper); }
.split a:last-child:hover { background: #2a2e32; }
.split a svg { width: 1.2rem; height: 1.2rem; flex: none; transition: transform 240ms var(--ease); }
.split a:hover svg { transform: translateX(4px); }

/* ---------- Footer ---------- */
.site-foot { background: var(--mist); padding-block: 2.5rem; }
.site-foot .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center; }
.site-foot a { background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; transition: background-size 240ms var(--ease); }
.site-foot a:hover { background-size: 100% 1px; }

/* ---------- Skills page ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.search {
  flex: 1 1 16rem; min-width: 0; max-width: 26rem;
  border: 0; border-bottom: 1px solid var(--ink); background: transparent;
  font: inherit; font-size: 1rem; padding: .55rem 0; color: var(--ink); border-radius: 0;
}
.search::placeholder { color: var(--silver); }
.search:focus { outline: none; border-bottom-width: 2px; padding-bottom: calc(.55rem - 1px); }
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; }
.tab {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
  background: var(--paper); color: var(--slate); border: 1px solid var(--rule); border-radius: 999px;
  padding: .4rem .8rem; cursor: pointer; transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.tab:hover { color: var(--ink); }
.tab[aria-pressed="true"] { color: var(--ink); border-color: var(--ink); }

.stats { display: flex; gap: clamp(1.5rem, 5vw, 4rem); flex-wrap: wrap; padding-block: 1.75rem; }
.stat b { display: block; font-weight: 400; font-size: clamp(2.4rem, 5vw, 3.4rem); line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.stat .earmark { display: block; margin-top: .6rem; }

.skill { border-bottom: 1px solid var(--rule); }
.skill-btn {
  all: unset; box-sizing: border-box; cursor: pointer; width: 100%;
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 6fr) auto; gap: var(--gutter);
  align-items: baseline; padding: 1.4rem 0 1.5rem; position: relative;
}
.skill-btn:focus-visible { outline: 1px solid var(--ink); outline-offset: 2px; }
.skill-name { font-family: var(--mono); font-size: 1rem; word-break: break-word; }
.skill-area { display: block; margin-top: .45rem; }
.skill-what { color: var(--slate); max-width: 38rem; }
.flags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .6rem; }
.flag { font-family: var(--mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; border: 1px solid var(--silver); color: var(--slate); padding: .2rem .5rem; }
.flag.warn { border-color: var(--ink); color: var(--ink); }
.plus { width: 2.4rem; height: 2.4rem; display: grid; place-items: center; border: 1px solid var(--rule); transition: background-color 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease); }
.plus i { position: relative; width: .8rem; height: .8rem; }
.plus i::before, .plus i::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: currentColor; transition: transform 240ms var(--ease); }
.plus i::after { transform: rotate(90deg); }
.skill-btn:hover .plus { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.skill.open .plus i::after { transform: rotate(0deg); }

.panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 420ms var(--ease); }
.skill.open .panel { grid-template-rows: 1fr; }
.panel > div { overflow: hidden; min-width: 0; }
.panel-inner { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: var(--gutter); padding: .25rem 0 2.5rem; }
.facts { display: grid; gap: 1.4rem; align-content: start; }
.facts p { margin: .35rem 0 0; }
.facts .empty { color: var(--silver); }
.facts a.repo { display: inline-flex; gap: .45rem; align-items: center; border-bottom: 1px solid var(--ink); padding-bottom: 2px; font-size: .9rem; }
.file-tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.file-tabs .tab { text-transform: none; letter-spacing: 0; font-size: .74rem; border-radius: 0; }
.doc {
  background: var(--mist); padding: clamp(1rem, 3vw, 2rem); min-width: 0; overflow-wrap: anywhere;
  max-height: 34rem; overflow-y: auto; font-size: .95rem; line-height: 1.55;
}
.doc h1, .doc h2, .doc h3, .doc h4 { font-weight: 400; letter-spacing: -.01em; line-height: 1.2; margin: 1.6em 0 .5em; }
.doc h1 { font-size: 1.6rem; font-weight: 400; margin-top: .4em; } .doc h2 { font-size: 1.25rem; } .doc h3 { font-size: 1.05rem; } .doc h4 { font-size: 1rem; }
.doc p, .doc li { max-width: 68ch; }
.doc code { font-family: var(--mono); font-size: .85em; background: var(--paper); padding: 0 .3em; }
.doc pre { background: var(--paper); padding: .9rem 1rem; overflow-x: auto; border: 1px solid var(--rule); }
.doc pre code { padding: 0; }
.doc .tw { overflow-x: auto; }
.doc table { border-collapse: collapse; font-size: .88rem; margin: 1rem 0; }
.doc th, .doc td { border-bottom: 1px solid var(--rule); padding: .5rem .75rem .5rem 0; text-align: left; vertical-align: top; }
.doc th { font-family: var(--mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 400; color: var(--slate); }
.doc blockquote { margin: 1rem 0; padding-left: 1rem; border-left: 1px solid var(--ink); color: var(--slate); }
.doc hr { border: 0; border-top: 1px solid var(--rule); margin: 1.5rem 0; }
.fm { font-family: var(--mono); font-size: .72rem; color: var(--slate); white-space: pre-wrap; border-bottom: 1px solid var(--rule); padding-bottom: 1rem; margin-bottom: 1rem; }
.note { color: var(--slate); font-size: .9rem; margin-top: .9rem; }
.empty-state { padding: 3rem 0; color: var(--slate); }

/* ---------- Responsive ---------- */
@media (max-width: 959px) {
  .hero .wrap, .hero.compact .wrap { grid-template-columns: 1fr; }
  .hero-mark { justify-self: start; max-width: 18rem; order: -1; }
  .hero.compact .hero-mark { max-width: 9rem; }
  .panel-inner { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .row, .skill-btn { grid-template-columns: minmax(0, 1fr) auto; }
  .row-desc, .skill-what { grid-column: 1 / -1; grid-row: 2; }
  .split { grid-template-columns: 1fr; }
  .head-links .ghost span.long { display: none; }
  .head-links .ghost.ext { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after, ::view-transition-old(root), ::view-transition-new(root) { transition-duration: .01ms !important; animation: none !important; }
  .reveal-lines .line > span, .fade-in, [data-reveal] { transform: none !important; opacity: 1 !important; }
  .rule { transform: scaleX(1) !important; }
}

/* ---------- Owner and reason editor ---------- */
.fact-actions { display: flex; flex-wrap: wrap; gap: .6rem 1.25rem; align-items: center; }
.ghost.dark { color: var(--ink); border-color: var(--ink); background: transparent; cursor: pointer; font: inherit; font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.ghost.dark:hover, .ghost.dark.solid { background: var(--ink); color: var(--paper); }
.ghost.dark.solid:hover { background: #2a2e32; }
.ghost.dark:disabled { opacity: .5; cursor: progress; }
.editor { display: grid; gap: .5rem; animation: rise 420ms var(--ease) both; }
.editor .fact-actions { margin-top: .6rem; }
.field {
  width: 100%; min-width: 0; font: inherit; font-size: .95rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--rule); border-radius: 0; padding: .65rem .75rem;
  transition: border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}
.field:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
textarea.field { resize: vertical; line-height: 1.45; }
.editor label + .field { margin-bottom: .6rem; }
@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }