/* ─────────────────────────────────────────────────────────────
   Mohona Yesmin — portfolio
   Ink + bone neutrals, one soft violet accent.
   Themes: [data-theme="dark"] (ink, default) and [data-theme="light"] (paper)
   ───────────────────────────────────────────────────────────── */

:root {
  --serif: "Instrument Serif", "Times New Roman", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --nav-h: 68px;
  --wrap: 1180px;
  --gutter: clamp(20px, 4.4vw, 48px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ink (default) */
:root,
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0d0e;
  --bg-2: #111113;
  --surface: #151517;
  --surface-2: #1b1b1e;
  --rgb-fg: 233, 227, 215;
  --rgb-accent: 143, 118, 232;

  --text: #e9e3d7;
  --muted: #a39d91;
  --faint: #858076;
  --accent: #8f76e8;
  --accent-text: #ab96f2;
  --on-accent: #0d0d0e;

  --note-bg: #e6dfd0;
  --note-fg: #1a1916;
  --grain-rgb: 255 255 255;
  --grain-opacity: .07;
}

/* paper */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ece7dd;
  --bg-2: #e6e0d4;
  --surface: #f3efe7;
  --surface-2: #f8f5ef;
  --rgb-fg: 23, 22, 26;
  --rgb-accent: 106, 79, 208;

  --text: #17161a;
  --muted: #5d5850;
  --faint: #676259;
  --accent: #6a4fd0;
  --accent-text: #5a3fc0;
  --on-accent: #f6f2ea;

  --note-bg: #17161a;
  --note-fg: #ece7dd;
  --grain-rgb: 0 0 0;
  --grain-opacity: .09;
}

:root {
  --line: rgba(var(--rgb-fg), .12);
  --line-2: rgba(var(--rgb-fg), .22);
  --accent-soft: rgba(var(--rgb-accent), .13);
}

/* ── base ─────────────────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background-color .4s var(--ease), color .4s var(--ease);
  overflow-x: hidden;
}

/* film grain */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}
:root[data-theme="light"] body::after {
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd, figure { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
em { font-style: italic; }
code, .mono { font-family: var(--mono); }
code { font-size: .86em; padding: .12em .42em; border-radius: 5px; background: rgba(var(--rgb-fg), .07); color: var(--text); }
b { font-weight: 600; color: var(--text); }
::selection { background: rgba(var(--rgb-accent), .38); color: var(--text); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

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

.skip {
  position: fixed; left: 16px; top: -60px; z-index: 200;
  padding: 10px 16px; border-radius: 8px;
  background: var(--accent); color: var(--on-accent);
  font: 500 13px var(--mono);
  transition: top .2s;
}
.skip:focus { top: 14px; }

/* ── nav ──────────────────────────────────────────────────── */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 80;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: background-color .3s, border-color .3s, backdrop-filter .3s;
}
.nav.scrolled {
  background: rgba(var(--rgb-bg-glass, 13, 13, 14), .72);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-color: var(--line);
}
:root[data-theme="light"] .nav.scrolled { --rgb-bg-glass: 236, 231, 221; }

.nav__inner {
  height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter);
}
.brand { font: italic 400 30px/1 var(--serif); letter-spacing: -.01em; }
.brand span { color: var(--accent); font-style: normal; }

.nav__links { display: flex; gap: clamp(14px, 2vw, 30px); }
.nav__links a {
  position: relative; padding: 6px 0;
  font: 400 12px/1 var(--mono); letter-spacing: .09em; text-transform: uppercase; color: var(--muted);
  transition: color .2s;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease);
}
.nav__links a:hover, .nav__links a.active { color: var(--text); }
.nav__links a.active::after, .nav__links a:hover::after { transform: scaleX(1); }

.nav__tools { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  width: 38px; height: 38px; display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: 50%; color: var(--muted);
  transition: color .2s, border-color .2s, transform .3s var(--ease);
}
.icon-btn:hover { color: var(--text); border-color: var(--accent); }
#themeToggle:hover { transform: rotate(18deg); }
.i-moon { display: none; }
:root[data-theme="light"] .i-sun { display: none; }
:root[data-theme="light"] .i-moon { display: block; }

.nav__burger { display: none; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav__burger span { width: 15px; height: 1.5px; background: currentColor; transition: transform .3s var(--ease); }
.nav.open .nav__burger span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav.open .nav__burger span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ── buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 26px; border-radius: 999px; border: 1px solid transparent;
  font: 500 12.5px/1 var(--mono); letter-spacing: .07em; text-transform: uppercase; white-space: nowrap;
  transition: transform .3s var(--ease), background-color .25s, border-color .25s, color .25s, box-shadow .3s;
}
.btn span { display: inline-block; transition: transform .3s var(--ease); }
.btn:hover span { transform: translate(2px, -2px); }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px -12px rgba(var(--rgb-accent), .8); }
.btn--ghost { border-color: var(--line-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-text); transform: translateY(-2px); }
.btn--sm { padding: 10px 17px; font-size: 11px; }
.btn--email { text-transform: none; letter-spacing: .02em; font-size: 13.5px; }
.nowrap { white-space: nowrap; }

/* ── reveal ───────────────────────────────────────────────── */
.js .reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity .9s var(--ease) var(--d, 0s), transform .9s var(--ease) var(--d, 0s);
}
.js .reveal.in { opacity: 1; transform: none; }

/* ── hero ─────────────────────────────────────────────────── */
.hero {
  position: relative; isolation: isolate;
  min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: space-between;
  padding-top: calc(var(--nav-h) + clamp(24px, 5vh, 72px));
  overflow: hidden;
  background:
    radial-gradient(52% 46% at 80% 30%, var(--accent-soft), transparent 72%),
    radial-gradient(60% 50% at 8% 100%, rgba(var(--rgb-fg), .04), transparent 70%);
}
.hero__graph {
  position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%;
  -webkit-mask-image: linear-gradient(90deg, transparent 30%, #000 62%);
  mask-image: linear-gradient(90deg, transparent 30%, #000 62%);
}
.hero__inner { display: flex; flex-direction: column; align-items: flex-start; }

.eyebrow { font: 400 12.5px/1.4 var(--mono); letter-spacing: .06em; color: var(--muted); margin-bottom: clamp(18px, 3vh, 32px); }

.hero__name {
  font: 400 clamp(76px, min(14vw, 23vh), 220px)/.86 var(--serif);
  letter-spacing: -.028em; margin-left: -.04em;
}
.hero__name .line { display: block; }
.hero__name em { padding-right: .03em; }
.hero__name .dot { color: var(--accent); font-style: normal; }

.hero__lede {
  max-width: 560px; margin-top: clamp(22px, 4vh, 44px);
  font-size: clamp(17px, 1.5vw, 20px); line-height: 1.6; color: rgba(var(--rgb-fg), .82);
}
.hero__lede em { font-family: var(--serif); font-size: 1.15em; color: var(--text); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(22px, 3.6vh, 34px); }
.hero__status {
  margin-top: 26px; display: flex; align-items: center; gap: 12px;
  font: 400 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}
.pulse { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.pulse::after {
  content: ""; position: absolute; inset: -5px; border-radius: 50%;
  border: 1px solid var(--accent); animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse { 0% { transform: scale(.4); opacity: .9; } 100% { transform: scale(1.6); opacity: 0; } }

.hero__foot {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px;
  padding-block: 34px 30px;
}
.creds { display: flex; flex-wrap: wrap; gap: 14px 44px; }
.creds li { font-size: 14px; color: var(--text); }
.creds span {
  display: block; margin-bottom: 4px;
  font: 400 10.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint);
}
.scroll-cue { display: flex; align-items: center; gap: 14px; font: 400 10.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--faint); }
.scroll-cue i { display: block; width: 1px; height: 46px; background: linear-gradient(var(--line-2), var(--accent)); transform-origin: top; animation: cue 2.6s var(--ease) infinite; }
@keyframes cue { 0% { transform: scaleY(0); } 55% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }

/* ── metrics ──────────────────────────────────────────────── */
.metrics { border-block: 1px solid var(--line); background: var(--bg-2); }
.metrics__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.metrics__grid li { padding: clamp(28px, 4vw, 44px) clamp(16px, 2.4vw, 32px); border-left: 1px solid var(--line); }
.metrics__grid li:first-child { border-left: 0; padding-left: 0; }
.metrics__grid b {
  display: block; font: 400 clamp(44px, 6vw, 76px)/1 var(--serif); letter-spacing: -.02em; color: var(--text);
  font-variant-numeric: tabular-nums;
}
.metrics__grid span { display: block; margin-top: 12px; max-width: 24ch; font: 400 12px/1.55 var(--mono); color: var(--muted); }

/* ── sections ─────────────────────────────────────────────── */
.section { padding-block: clamp(72px, 9vw, 112px); scroll-margin-top: 0; }
.section__head { margin-bottom: clamp(44px, 6vw, 80px); }
.kicker { font: 400 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 22px; }
.kicker span { color: var(--accent-text); margin-right: 10px; }
.kicker--sm { margin-bottom: 14px; }
.section h2 { font: 400 clamp(46px, 7vw, 96px)/.98 var(--serif); letter-spacing: -.02em; }
.section h2 em, .contact__title em { color: var(--accent-text); }

/* ── about ────────────────────────────────────────────────── */
.about { display: grid; grid-template-columns: 1.12fr .88fr; gap: clamp(40px, 7vw, 110px); align-items: start; }
.about__text > p { font-size: clamp(17px, 1.5vw, 19.5px); line-height: 1.72; color: rgba(var(--rgb-fg), .84); }
.about__text > p + p { margin-top: 1.25em; }

.facts { margin-top: 48px; border-top: 1px solid var(--line); }
.facts > div { display: grid; grid-template-columns: 116px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.facts dt { padding-top: 3px; font: 400 11px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.facts dd { font-size: 15px; line-height: 1.6; color: rgba(var(--rgb-fg), .84); }
.facts small { font: 400 11px var(--mono); color: var(--muted); margin-left: 6px; letter-spacing: .02em; }

.about__figure { position: sticky; top: calc(var(--nav-h) + 24px); }

/* exploded stack diagram */
.stack { width: 100%; height: auto; overflow: visible; }
.stack path { fill: none; stroke: var(--line-2); stroke-width: 1.2; stroke-linejoin: round; stroke-linecap: round; }
.stack .top { fill: var(--surface); }
.stack .die { fill: url(#dots); }
.stack .dot-fill { fill: var(--faint); }
.stack .stack__links path { stroke: var(--line-2); stroke-dasharray: 2 5; }
.stack .lead { stroke: var(--line-2); }
.stack text { font-family: var(--mono); }
.stack .t-h { font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; fill: var(--text); }
.stack .t-s { font-size: 10.5px; fill: var(--muted); }
.plate {
  transform-box: fill-box; cursor: default;
  translate: 0 calc(var(--k, 0) * 66px * (1 - var(--ex, 1)));
  transition: transform .5s var(--ease);
}
.plate .lead, .plate text { opacity: clamp(0, calc((var(--ex, 1) - .5) * 2.4), 1); }
.stack .stack__links { opacity: var(--ex, 1); }
.plate:hover { transform: translateX(8px); }
.plate:hover .top { stroke: var(--accent); }
.plate:hover .t-h { fill: var(--accent-text); }
.plate--hot .top { fill: var(--accent-soft); stroke: var(--accent); }
.plate--hot .die { stroke: var(--accent); }
.plate--hot .t-h { fill: var(--accent-text); }

.js .stack .plate { opacity: 0; }
.js .stack .plate path[pathLength] { stroke-dasharray: 1; stroke-dashoffset: 1; }
.js .about__figure.in .plate { opacity: 1; transition: opacity .7s var(--ease) calc(var(--i) * .16s), transform .5s var(--ease); }
.js .about__figure.in .plate path[pathLength] { animation: draw 1.5s var(--ease) calc(var(--i) * .16s) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }

/* paper note */
.note {
  position: relative; width: min(268px, 86%); margin: 30px 0 0 auto; padding: 24px 24px 22px;
  background: var(--note-bg); color: var(--note-fg);
  font: 400 13px/1.75 var(--mono);
  transform: rotate(-2.2deg);
  box-shadow: 0 18px 36px -18px rgba(0, 0, 0, .7);
  clip-path: polygon(0 0, 100% 0, 100% 96%, 96% 100%, 88% 97%, 78% 100%, 66% 97%, 54% 100%, 42% 97%, 30% 100%, 18% 97%, 8% 100%, 0 97%);
}
.note__title { margin-bottom: 10px; font-weight: 500; letter-spacing: .02em; }
.note__tape {
  position: absolute; left: 50%; top: -11px; width: 92px; height: 24px; margin-left: -46px; transform: rotate(-3deg);
  background: rgba(var(--rgb-accent), .55); backdrop-filter: blur(2px);
}

/* ── timeline ─────────────────────────────────────────────── */
.timeline { position: relative; display: grid; gap: 28px; }
.timeline::before { content: ""; position: absolute; left: 32px; top: 34px; bottom: 34px; width: 1px; background: var(--line-2); }
.tl { position: relative; display: grid; grid-template-columns: 64px 1fr; gap: clamp(20px, 3vw, 36px); align-items: start; }
.tl__year {
  position: relative; z-index: 1; width: 64px; height: 64px; display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: 50%; background: var(--bg);
  font: 500 13px/1 var(--mono); letter-spacing: .02em; color: var(--muted);
  transition: border-color .3s, color .3s;
}
.tl__year--live { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.tl:hover .tl__year:not(.tl__year--live) { border-color: var(--accent); color: var(--accent-text); }

.card {
  padding: clamp(24px, 3vw, 34px); border: 1px solid var(--line); border-radius: 16px; background: var(--surface);
  transition: border-color .35s, transform .4s var(--ease), background-color .35s;
}
.tl:hover .card { border-color: rgba(var(--rgb-accent), .45); transform: translateY(-3px); }
.card__head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 18px; }
.card h3 { font: 400 clamp(26px, 2.6vw, 34px)/1.12 var(--serif); letter-spacing: -.01em; }
.card .sep { color: var(--faint); margin-inline: .12em; }
.org { margin-top: 8px; font: 400 13px/1.3 var(--mono); color: var(--accent-text); }
.meta { flex: none; text-align: right; font: 400 12px/1.6 var(--mono); color: var(--muted); }
.card__path { margin: -6px 0 16px; font: 400 12px/1.6 var(--mono); color: var(--muted); }

.bullets { display: grid; gap: 11px; }
.bullets li { position: relative; padding-left: 20px; font-size: 15px; line-height: 1.65; color: rgba(var(--rgb-fg), .8); }
.bullets li::before { content: ""; position: absolute; left: 0; top: .78em; width: 9px; height: 1px; background: var(--accent); }
.bullets--tight { gap: 9px; }
.bullets a { color: var(--text); border-bottom: 1px solid rgba(var(--rgb-accent), .55); transition: color .25s, border-color .25s; }
.bullets a:hover { color: var(--accent-text); border-color: currentColor; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tags a { color: inherit; }
.tags a:hover { color: var(--accent-text); }
.tags li {
  padding: 5px 12px; border: 1px solid rgba(var(--rgb-accent), .5); border-radius: 999px;
  font: 400 11.5px/1.4 var(--mono); color: var(--text); background: rgba(var(--rgb-accent), .06);
}

/* ── projects ─────────────────────────────────────────────── */
.feature {
  display: grid; grid-template-columns: .82fr 1.18fr; overflow: hidden;
  border: 1px solid var(--line); border-radius: 20px; background: var(--surface);
}
.feature__art {
  display: grid; place-items: center; padding: 32px; border-right: 1px solid var(--line);
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 32px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 32px 100%,
    var(--bg-2);
  background-blend-mode: normal;
}
.gitgraph { width: 100%; height: auto; max-width: 380px; }
.gg-lines path { fill: none; stroke: var(--line-2); stroke-width: 1.6; }
.gg-lines .gg-branch { stroke: rgba(var(--rgb-accent), .8); }
.gg-lines .gg-branch--2 { stroke: rgba(var(--rgb-accent), .5); }
.gg-nodes circle { fill: var(--bg-2); stroke: var(--text); stroke-width: 1.5; }
.gg-nodes .hot { fill: var(--accent); stroke: var(--accent); }
.gg-nodes .merge { fill: var(--accent); stroke: var(--bg-2); stroke-width: 3; }
.gg-text text { font: 400 10.5px var(--mono); fill: var(--muted); }
.feature__body { padding: clamp(28px, 3.6vw, 48px); }
.feature h3 { font: 400 clamp(40px, 5vw, 62px)/1 var(--serif); letter-spacing: -.02em; }
.feature__lede { margin: 12px 0 22px; font-size: 16px; color: var(--muted); }
.feature__lede .mono { font-size: 12.5px; color: var(--accent-text); }
.feature__links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }

.subhead { margin: clamp(56px, 8vw, 96px) 0 24px; font: 400 12px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.proj {
  display: flex; flex-direction: column; overflow: hidden;
  border: 1px solid var(--line); border-radius: 16px; background: var(--surface);
  transition: border-color .35s, transform .45s var(--ease), box-shadow .45s;
}
.proj:hover { border-color: rgba(var(--rgb-accent), .55); transform: translateY(-5px); box-shadow: 0 26px 44px -30px rgba(var(--rgb-accent), .55); }
.proj__art { padding: 18px 18px 8px; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.proj__art svg { width: 100%; height: auto; }
.proj__art .ax path { fill: none; stroke: var(--line-2); stroke-width: 1; }
.proj__art .ax .grid { stroke: var(--line); stroke-dasharray: 2 5; }
.proj__art .ln { fill: none; stroke-width: 1.8; stroke-linecap: round; }
.proj__art .ln--a { stroke: var(--text); }
.proj__art .ln--b { stroke: var(--muted); }
.proj__art .ln--hot { stroke: var(--accent); stroke-width: 2.2; }
.proj__art .ln--dash { stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 4 6; }
.proj__art .pt { fill: var(--accent); }
.proj__art .band { fill: var(--accent); opacity: .13; }
.proj__art .scatter circle { fill: var(--muted); opacity: .9; }
.proj__art .scatter--a circle { fill: var(--accent); }
.proj__art .scatter--b circle { fill: var(--text); }
.proj__art .lbl { font: 400 9.5px var(--mono); fill: var(--faint); letter-spacing: .02em; }

.js .proj__art .ln[pathLength] { stroke-dasharray: 1; stroke-dashoffset: 1; }
.js .proj.in .proj__art .ln[pathLength] { animation: draw 1.6s var(--ease) .25s forwards; }

.proj__body { display: flex; flex: 1; flex-direction: column; padding: 24px 24px 22px; }
.proj h4 { font: 400 28px/1.12 var(--serif); letter-spacing: -.01em; }
.proj__sub { margin: 6px 0 14px; font: 400 12px/1.4 var(--mono); color: var(--accent-text); }
.proj__body > p:not(.proj__sub) { font-size: 14.5px; line-height: 1.65; color: rgba(var(--rgb-fg), .78); }
.proj .tags { margin-top: 18px; }
.proj .tags li { font-size: 11px; padding: 4px 10px; }
.proj__go { margin-top: auto; padding-top: 22px; font: 500 11.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text); }
.proj__go span { display: inline-block; margin-left: 4px; color: var(--accent-text); transition: transform .3s var(--ease); }
.proj:hover .proj__go span { transform: translate(3px, -3px); }
.proj__links { display: flex; gap: 22px; margin-top: auto; }
.proj__links .proj__go { margin-top: 0; }
.proj__links .proj__go:hover { color: var(--accent-text); }
.proj__links .proj__go:hover span { transform: translate(3px, -3px); }

/* ── skills terminal (stays dark in both themes) ──────────── */
.term {
  --t-bg: #0b0b0c; --t-text: #e9e3d7; --t-muted: #8f8a80; --t-line: rgba(233, 227, 215, .13); --t-accent: #ab96f2;
  overflow: hidden; border: 1px solid var(--line-2); border-radius: 16px; background: var(--t-bg); color: var(--t-text);
  box-shadow: 0 34px 70px -40px rgba(0, 0, 0, .8);
}
.term__bar { display: flex; align-items: center; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--t-line); }
.term__bar i { width: 11px; height: 11px; border-radius: 50%; background: rgba(233, 227, 215, .16); }
.term__bar i:first-child { background: rgba(143, 118, 232, .8); }
.term__bar span { margin-left: 12px; font: 400 11.5px var(--mono); color: var(--t-muted); }
.term__body { padding: clamp(22px, 3.4vw, 40px); font-family: var(--mono); }
.cmd { font-size: 14px; color: var(--t-text); }
.ps { color: var(--t-accent); margin-right: 8px; }
.cmd--end { margin-top: 34px; }
.caret { display: inline-block; width: 9px; height: 17px; vertical-align: -3px; background: var(--t-accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.term__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 30px; }
.term h3 { margin: 0 0 14px; font: 400 12px/1.4 var(--mono); letter-spacing: .04em; color: var(--t-accent); }
.term ul + h3 { margin-top: 30px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  padding: 6px 11px; border: 1px solid var(--t-line); border-radius: 6px; background: rgba(233, 227, 215, .03);
  font: 400 12.5px/1.3 var(--mono); color: var(--t-text);
  transition: border-color .25s, color .25s, background-color .25s, transform .25s var(--ease);
}
.chips li:hover { border-color: #8f76e8; color: #fff; background: rgba(143, 118, 232, .14); transform: translateY(-2px); }

/* ── contact ──────────────────────────────────────────────── */
.contact { border-top: 1px solid var(--line); background: radial-gradient(60% 70% at 85% 100%, var(--accent-soft), transparent 70%); }
.contact__title { font: 400 clamp(60px, 11.5vw, 168px)/.92 var(--serif); letter-spacing: -.028em; }
.contact__lede { max-width: 520px; margin-top: 34px; font-size: 18px; color: rgba(var(--rgb-fg), .8); }
.contact__links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* ── footer ───────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--line); }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; padding-block: 30px; font: 400 12px/1.4 var(--mono); color: var(--faint); }
.footer a { color: var(--muted); transition: color .2s; }
.footer a:hover { color: var(--accent-text); }
.footer__contact a { color: var(--text); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 4px; }
.footer__contact span { margin: 0 .35em; }

/* ── responsive ───────────────────────────────────────────── */
@media (max-width: 980px) {
  .about { grid-template-columns: 1fr; }
  .about__figure { position: static; max-width: 520px; }
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .feature { grid-template-columns: 1fr; }
  .feature__art { border-right: 0; border-bottom: 1px solid var(--line); }
  .term__grid { grid-template-columns: repeat(2, 1fr); }
  .term__grid section:first-child { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  .nav__burger { display: flex; }
  .nav__links {
    position: fixed; inset: var(--nav-h) 0 auto 0; flex-direction: column; gap: 0; padding: 8px var(--gutter) 24px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    opacity: 0; transform: translateY(-8px); pointer-events: none; visibility: hidden;
    transition: opacity .3s, transform .3s var(--ease), visibility .3s;
  }
  .nav.open { background: var(--bg); border-color: var(--line); }
  .nav.open .nav__links { opacity: 1; transform: none; pointer-events: auto; visibility: visible; }
  .nav__links a { padding: 18px 0; font-size: 13px; border-bottom: 1px solid var(--line); }
  .nav__links a::after { display: none; }
  .metrics__grid { grid-template-columns: repeat(2, 1fr); }
  .metrics__grid li:nth-child(3) { border-left: 0; padding-left: 0; }
  .metrics__grid li:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .hero__graph { -webkit-mask-image: linear-gradient(180deg, transparent 8%, #000 55%); mask-image: linear-gradient(180deg, transparent 8%, #000 55%); opacity: .8; }
  .scroll-cue { display: none; }
}

@media (max-width: 640px) {
  .nav__resume { display: none; }
  .eyebrow { font-size: 11px; }
  .stack .t-h { font-size: 14px; }
  .stack .t-s { font-size: 12.5px; }
  .hero__name { font-size: clamp(76px, 25vw, 150px); }
  .grid3 { grid-template-columns: 1fr; }
  .timeline::before { left: 22px; }
  .tl { grid-template-columns: 44px 1fr; gap: 14px; }
  .tl__year { width: 44px; height: 44px; font-size: 10.5px; }
  .card { padding: 22px 20px; }
  .card__head { flex-direction: column; gap: 10px; }
  .meta { text-align: left; }
  .facts > div { grid-template-columns: 1fr; gap: 6px; }
  .term__grid { grid-template-columns: 1fr; gap: 30px; }
  .btn { padding: 14px 20px; }
  .footer__inner { flex-direction: column; }
}

/* ── reduced motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  .js .stack .plate { opacity: 1; }
  .js .stack .plate path[pathLength], .js .proj__art .ln[pathLength] { stroke-dashoffset: 0; }
}


/* ═════════ v2 additions: sera, scroll motion ═════════ */

.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* hero recedes as you scroll (--hp is set from JS) */
@media (prefers-reduced-motion: no-preference) {
  .hero__inner { transform: translateY(calc(var(--hp, 0) * -48px)); opacity: calc(1 - var(--hp, 0) * 1.15); }
  .hero__foot > * { opacity: calc(1 - var(--hp, 0) * 1.7); }
  .hero__graph { transform: translateY(calc(var(--hp, 0) * 70px)) scale(calc(1 + var(--hp, 0) * .06)); }
}

/* ── sera ─────────────────────────────────────────────────── */
.sera { border-top: 1px solid var(--line); background: linear-gradient(180deg, transparent, var(--bg-2) 14%, var(--bg-2) 86%, transparent); }
.sera__intro { display: grid; grid-template-columns: 1.35fr .65fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.sera__quote { margin-bottom: 26px; font: italic 400 clamp(26px, 3vw, 40px)/1.2 var(--serif); letter-spacing: -.01em; color: var(--text); }
.sera__copy p + p { margin-top: 1.1em; }
.sera__copy > p:not(.sera__quote) { font-size: 17px; line-height: 1.7; color: rgba(var(--rgb-fg), .82); }
.status { padding: 24px; border: 1px solid var(--line-2); border-radius: 16px; background: var(--surface); }
.status__row { display: flex; align-items: center; gap: 14px; font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.status dl { margin: 18px 0 4px; }
.status dl > div { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-top: 1px solid var(--line); font-size: 14px; }
.status dt { font: 400 11px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.status dd { text-align: right; color: var(--text); }
.status dd a { color: var(--accent-text); border-bottom: 1px solid transparent; }
.status dd a:hover { border-color: currentColor; }
.status .tags { margin-top: 16px; }
.status .tags li { font-size: 10.5px; padding: 3px 9px; }

.sera__features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: clamp(48px, 7vw, 88px); border-top: 1px solid var(--line-2); }
.sera__features li { padding: 24px 24px 0 0; }
.sera__features li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.fnum { font: 400 11px var(--mono); letter-spacing: .12em; color: var(--accent-text); }
.sera__features h3 { margin: 12px 0 10px; font: 400 26px/1.15 var(--serif); letter-spacing: -.01em; }
.sera__features p { font-size: 14.5px; line-height: 1.65; color: rgba(var(--rgb-fg), .74); }

/* scaler */
.scaler { margin-top: clamp(56px, 8vw, 104px); padding: clamp(22px, 3.4vw, 40px); border: 1px solid var(--line-2); border-radius: 20px; background: var(--bg); }
.scaler__top { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.scaler__title { font: 400 clamp(34px, 4vw, 52px)/1 var(--serif); letter-spacing: -.02em; }
.scaler__sub { margin-top: 10px; max-width: 46ch; font-size: 15px; color: var(--muted); }
.scaler__count { text-align: right; }
.scaler__count b { display: block; font: 400 clamp(52px, 7vw, 92px)/1 var(--serif); letter-spacing: -.02em; color: var(--accent-text); font-variant-numeric: tabular-nums; }
.scaler__count span { font: 400 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }

.scaler__control { margin: 30px 0 34px; }
#scaleRange { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; background: transparent; cursor: pointer; }
#scaleRange::-webkit-slider-runnable-track { height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--accent) calc(var(--fill, 33%)), var(--line-2) calc(var(--fill, 33%))); }
#scaleRange::-moz-range-track { height: 2px; border-radius: 2px; background: var(--line-2); }
#scaleRange::-moz-range-progress { height: 2px; background: var(--accent); }
#scaleRange::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -10px; border-radius: 50%; background: var(--accent); border: 4px solid var(--bg); box-shadow: 0 0 0 1px var(--accent), 0 8px 22px -6px rgba(var(--rgb-accent), .8); transition: transform .2s var(--ease); }
#scaleRange::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 4px solid var(--bg); box-shadow: 0 0 0 1px var(--accent); }
#scaleRange:active::-webkit-slider-thumb { transform: scale(1.15); }
#scaleRange:focus-visible { outline-offset: 6px; }
.ticks { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 6px; }
.ticks button { padding: 6px 0; text-align: left; font: 500 12px/1.4 var(--mono); letter-spacing: .06em; color: var(--faint); transition: color .25s; }
.ticks button:nth-child(4) { text-align: right; }
.ticks button:nth-child(2), .ticks button:nth-child(3) { text-align: center; }
.ticks button.on { color: var(--text); }
.ticks button:hover { color: var(--accent-text); }
.ticks em { display: block; font-style: normal; font-weight: 400; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-text); }

.scaler__grid { display: grid; grid-template-columns: 1fr; gap: clamp(28px, 4vw, 44px); }
.arch-wrap { overflow-x: auto; padding-bottom: 6px; }
.arch-hint { display: none; }
.arch { display: block; width: 100%; min-width: 620px; max-width: 940px; height: auto; margin-inline: auto; }
.arch .nd rect { fill: var(--surface); stroke: var(--line-2); stroke-width: 1.2; transition: stroke .5s, fill .5s; }
.arch .nd { transition: opacity .5s var(--ease); }
.arch .nd__t { font: 500 12px var(--mono); fill: var(--text); }
.arch .nd__s { font: 400 10px var(--mono); fill: var(--muted); }
.arch .nd.ghost { opacity: .22; }
.arch .nd.ghost rect { stroke-dasharray: 4 4; }
.arch .nd.hot rect { stroke: var(--accent); fill: var(--accent-soft); }
.arch .ed { fill: none; stroke: var(--line-2); stroke-width: 1.4; transition: opacity .5s; }
.arch .ed.on { stroke: rgba(var(--rgb-accent), .8); stroke-dasharray: 3 6; animation: flow 1.4s linear infinite; }
.arch .ed.off { opacity: 0; }
@keyframes flow { to { stroke-dashoffset: -18; } }
.arch #apiPips rect { fill: var(--accent); width: 10px; height: 10px; rx: 2px; animation: pop .45s var(--ease) both; }
.arch #apiPips.auto rect { animation: pop .45s var(--ease) both, breathe 2.2s ease-in-out infinite; }
@keyframes pop { from { transform: scale(0); } to { transform: scale(1); } }
@keyframes breathe { 50% { opacity: .45; } }
.arch #apiPips rect { transform-box: fill-box; transform-origin: center; }

@media (min-width: 900px) {
  .tier { display: grid; grid-template-columns: .8fr 1.2fr; column-gap: clamp(32px, 6vw, 88px); grid-template-rows: auto auto 1fr; }
  .tier__name, .tier__targets { grid-column: 1; }
  .tier__h { grid-column: 2; grid-row: 1; margin: 0 0 12px; align-self: end; }
  .tier__list { grid-column: 2; grid-row: 2 / span 2; }
}
.tier__name { font: 500 12px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent-text); }
.tier__targets { margin: 16px 0 22px; }
.tier__targets > div { display: flex; justify-content: space-between; gap: 14px; padding: 11px 0; border-top: 1px solid var(--line); font-size: 14px; }
.tier__targets > div:last-child { border-bottom: 1px solid var(--line); }
.tier__targets dt { font: 400 11px/1.6 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.tier__targets dd { text-align: right; color: var(--text); font-family: var(--mono); font-size: 13px; }
.tier__h { margin-bottom: 12px; font: 400 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.tier__list { display: grid; gap: 10px; }
.tier__list li { position: relative; padding-left: 20px; font-size: 14.5px; line-height: 1.55; color: rgba(var(--rgb-fg), .82); animation: rise .5s var(--ease) both; }
.tier__list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 9px; height: 1px; background: var(--accent); }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
.scaler__foot { margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); font: 400 12px/1.6 var(--mono); color: var(--faint); }

/* ── how i work ───────────────────────────────────────────── */
.tags--lg li { padding: 8px 15px; font-size: 12.5px; }

/* ── responsive: v2 ───────────────────────────────────────── */
@media (max-width: 1100px) {
  .nav__links { gap: 14px; }
  .nav__links a { font-size: 11px; letter-spacing: .06em; }
}
@media (max-width: 980px) {
  .sera__intro { grid-template-columns: 1fr; }
  .sera__features { grid-template-columns: repeat(2, 1fr); }
  .sera__features li:nth-child(3) { padding-left: 0; border-left: 0; }
  .sera__features li:nth-child(n + 3) { border-top: 1px solid var(--line); margin-top: 24px; }
}
@media (max-width: 640px) {
  .arch-hint { display: block; margin: -18px 0 0; font: 400 11px/1 var(--mono); letter-spacing: .06em; color: var(--faint); }
  .arch-wrap { -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent); mask-image: linear-gradient(90deg, #000 88%, transparent); }
  .sera__features { grid-template-columns: 1fr; }
  .sera__features li, .sera__features li + li { padding: 20px 0 0; border-left: 0; }
  .sera__features li + li { border-top: 1px solid var(--line); margin-top: 20px; }
  .scaler__count { text-align: left; }
  .ticks button { font-size: 11px; }
  .ticks em { font-size: 8.5px; }
}

@media (prefers-reduced-motion: reduce) {
  .arch .ed.on { animation: none; }
}

/* about: fit the opening screen (heading, intro, facts and stack) in one laptop viewport */
#about { padding-top: calc(var(--nav-h) + clamp(20px, 3vw, 36px)); }
#about .section__head { margin-bottom: clamp(24px, 3vw, 36px); }
#about .about__text > p { line-height: 1.62; }
#about .facts { margin-top: 24px; }
#about .facts > div { padding: 11px 0; }
#about .facts dd { line-height: 1.5; }
#about .about__figure { top: calc(var(--nav-h) + 16px); }
#about .about__figure { align-self: center; }
#about .stack { display: block; width: 100%; max-width: 370px; margin: 0 auto; }
#about .note { width: min(250px, 80%); margin: 14px 4% 0 auto; padding: 20px 22px 18px; }