/* Owen Loh — portfolio v2. Single stylesheet, no external requests. */

/* ---------- Theme tokens ---------- */
:root {
  --bg: #0a0c0e;
  --bg-soft: #11151a;
  --bg-card: #0f1216;
  --bg-elev: #151a20;
  --line: #1f262d;
  --line-soft: #161b21;
  --text: #e7e9ec;
  --muted: #8b95a1;
  --faint: #5b656f;
  --accent: #7ad3c4;
  --accent-2: #e0a35a;
  --accent-ink: #06140f;
  --warn: #e0a35a;
  --radius: 13px;
  --maxw: 940px;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
[data-theme="light"] {
  --bg: #fbfbf8;
  --bg-soft: #f4f4ee;
  --bg-card: #ffffff;
  --bg-elev: #ffffff;
  --line: #e3e2d9;
  --line-soft: #eeede6;
  --text: #14171b;
  --muted: #59626c;
  --faint: #93999f;
  --accent: #0c7a6c;
  --accent-2: #b9711d;
  --accent-ink: #ffffff;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  transition: background .25s ease, color .25s ease;
  overflow-x: hidden;
}
a { color: inherit; }
kbd {
  font-family: var(--mono); font-size: .76em; line-height: 1;
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px;
  padding: .15em .4em; color: var(--text); background: var(--bg-elev);
}
code {
  font-family: var(--mono); font-size: .88em; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  padding: .06em .34em; border-radius: 5px; white-space: nowrap;
}

.skip {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--accent); color: var(--accent-ink);
  padding: .6rem 1rem; border-radius: 0 0 8px 0;
  font-family: var(--mono); font-size: .85rem; text-decoration: none;
}
.skip:focus { left: 0; }

/* ---------- Scroll progress ---------- */
.progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 120; transition: width .1s linear;
}

/* ---------- Layout ---------- */
.hero-inner, .block, .footer { max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.25rem, 5vw, 2rem); }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  max-width: var(--maxw); margin-inline: auto;
  padding: .8rem clamp(1.25rem, 5vw, 2rem);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.mark { font-family: var(--mono); font-weight: 700; font-size: 1.05rem; text-decoration: none; color: var(--text); }
.mark .cursor { color: var(--accent); animation: blink 1.2s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.nav { display: flex; align-items: center; gap: clamp(.7rem, 2.6vw, 1.4rem); }
.nav a { font-family: var(--mono); font-size: .82rem; color: var(--muted); text-decoration: none; transition: color .2s; }
.nav a:hover { color: var(--accent); }
.kbtn, .theme-toggle {
  display: inline-flex; align-items: center; gap: .25rem; cursor: pointer;
  background: transparent; color: var(--muted); border: 1px solid var(--line);
  border-radius: 8px; font-family: var(--mono); font-size: .78rem; line-height: 1;
  padding: .35rem .5rem; transition: color .2s, border-color .2s, transform .15s;
}
.theme-toggle { padding: 0; width: 2rem; height: 2rem; justify-content: center; font-size: 1rem; }
.kbtn:hover, .theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.kbtn:active, .theme-toggle:active { transform: scale(.93); }
@media (max-width: 560px) { .nav a[href="#research"] { display: none; } }

/* ---------- Hero ---------- */
.hero { position: relative; isolation: isolate; padding: clamp(3.2rem, 9vw, 6rem) 0 3rem; overflow: hidden; }
.field {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1;
  opacity: .5; pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 55%, transparent);
  mask-image: linear-gradient(180deg, #000 55%, transparent);
}
.hero-inner { position: relative; }
.eyebrow { font-family: var(--mono); font-size: .8rem; letter-spacing: .03em; color: var(--accent); margin: 0 0 1rem; }
.eyebrow .dim { color: var(--muted); }
.hero h1 { font-size: clamp(2.7rem, 9.5vw, 4.6rem); line-height: 1.0; letter-spacing: -.025em; font-weight: 700; margin: 0 0 1.1rem; }
.tagline { font-size: clamp(1.15rem, 3.2vw, 1.5rem); line-height: 1.45; max-width: 42ch; margin: 0 0 1.1rem; font-weight: 450; }
.tagline .hl { color: var(--accent); font-family: var(--mono); font-size: .9em; }
.subline { color: var(--muted); max-width: 56ch; margin: 0 0 1.6rem; }
.hint { font-family: var(--mono); font-size: .76rem; color: var(--faint); margin: 1.4rem 0 0; }

/* ---------- Link chips ---------- */
.links { list-style: none; display: flex; flex-wrap: wrap; gap: .55rem; padding: 0; margin: 0; }
.links a {
  display: inline-flex; align-items: center; gap: .25rem;
  font-family: var(--mono); font-size: .85rem; text-decoration: none; color: var(--text);
  border: 1px solid var(--line); border-radius: 999px; padding: .42rem .9rem;
  transition: border-color .2s, color .2s, background .2s;
}
.links a:hover { color: var(--accent); border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, transparent); }
.links a.cta { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }
.links a.cta:hover { color: var(--accent-ink); filter: brightness(1.08); }
.arr { font-size: .8em; opacity: .7; }

/* ---------- Block headers ---------- */
.block { padding-top: clamp(2.5rem, 6vw, 4rem); padding-bottom: 1rem; }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding-bottom: 1.4rem; border-bottom: 1px solid var(--line); margin-bottom: 1.7rem; }
.block-head h2 { font-size: 1rem; font-family: var(--mono); font-weight: 600; letter-spacing: .02em; margin: 0; }
.block-head h2::before { content: "// "; color: var(--accent); }
.count { font-family: var(--mono); font-size: .78rem; color: var(--muted); }
.lead { font-size: 1.08rem; max-width: 60ch; color: color-mix(in srgb, var(--text) 92%, var(--muted)); margin: 0 0 2rem; }
.lead em { color: var(--accent); font-style: normal; }

/* ---------- Instrument ---------- */
.instrument { scroll-margin-top: 4rem; }
.rig { display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: 1.5rem; align-items: start; }
.controls { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; }
.ctrl { margin-bottom: 1.4rem; }
.ctrl label { display: flex; justify-content: space-between; align-items: baseline; font-family: var(--mono); font-size: .82rem; color: var(--muted); margin-bottom: .5rem; }
.ctrl label output { color: var(--accent); font-size: .95em; }
.scale { display: flex; justify-content: space-between; font-family: var(--mono); font-size: .68rem; color: var(--faint); margin-top: .35rem; }

input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 4px; background: var(--line); outline-offset: 6px; cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg-card); box-shadow: 0 0 0 1px var(--accent); transition: transform .12s; }
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg-card); box-shadow: 0 0 0 1px var(--accent); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 4px; background: var(--line); }

.readouts { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin: 1.5rem 0; }
.ro { background: var(--bg-elev); border: 1px solid var(--line-soft); border-radius: 9px; padding: .7rem .8rem; }
.ro span { display: block; font-family: var(--mono); font-size: .68rem; color: var(--faint); text-transform: lowercase; }
.ro b { font-size: 1.4rem; font-weight: 650; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.jac { border-top: 1px dashed var(--line); padding-top: 1rem; }
.jac-title { font-family: var(--mono); font-size: .72rem; color: var(--muted); margin: 0 0 .6rem; }
.jac-title .dim { color: var(--faint); }
.jrow { display: flex; justify-content: space-between; align-items: center; gap: .5rem; padding: .25rem 0; }
.jrow code { background: none; padding: 0; color: var(--muted); font-size: .78rem; white-space: normal; }
.jrow b { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: .9rem; }

.viz { display: grid; gap: 1rem; }
.viz-fig { margin: 0; background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1rem .6rem; }
.viz-fig figcaption { font-family: var(--mono); font-size: .7rem; color: var(--faint); margin-top: .4rem; text-align: center; }
#curve { width: 100%; height: auto; display: block; }
#radar { width: 100%; max-width: 320px; height: auto; display: block; margin: 0 auto; }
.radar-grid { stroke: var(--line); }
.radar-grid line { stroke: var(--line); }
#radar-shape { fill: color-mix(in srgb, var(--accent) 22%, transparent); stroke: var(--accent); stroke-width: 1.6; transition: all .18s ease; }
.radar-label text { fill: var(--muted); font-family: var(--mono); font-size: 9px; }

@media (min-width: 720px) { .viz { grid-template-columns: 1fr; } .viz-fig:has(#radar) { display: grid; } }
@media (max-width: 760px) { .rig { grid-template-columns: 1fr; } }

.caption { font-family: var(--mono); font-size: .76rem; color: var(--faint); margin: 1.3rem 0 0; max-width: 70ch; line-height: 1.6; }
.caption em { color: var(--muted); font-style: italic; }
.caption a { color: var(--accent); }

/* ---------- Work grid + details cards ---------- */
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: start; }
.card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s, background .2s; }
.card.wide { grid-column: 1 / -1; }
.card[open] { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: auto 1fr auto; grid-template-areas: "idx title chev" "idx hook chev"; gap: .15rem .6rem; padding: 1.25rem 1.3rem; align-items: start; }
summary::-webkit-details-marker { display: none; }
summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: var(--radius); }
.idx { grid-area: idx; font-family: var(--mono); font-size: .78rem; color: var(--accent); padding-top: .2rem; }
.c-title { grid-area: title; font-size: 1.1rem; font-weight: 650; letter-spacing: -.01em; }
.c-title .alt { color: var(--muted); font-weight: 400; font-size: .82em; }
.c-hook { grid-area: hook; color: var(--muted); font-size: .92rem; }
.chev { grid-area: chev; width: 16px; height: 16px; position: relative; align-self: center; }
.chev::before, .chev::after { content: ""; position: absolute; top: 50%; left: 50%; width: 11px; height: 2px; background: var(--accent); border-radius: 2px; transform: translate(-50%, -50%); transition: transform .22s ease; }
.chev::after { transform: translate(-50%, -50%) rotate(90deg); }
.card[open] .chev::after { transform: translate(-50%, -50%) rotate(0); }
.c-body { padding: 0 1.3rem 1.3rem; }
.c-body > p { margin: 0 0 .9rem; color: color-mix(in srgb, var(--text) 90%, var(--muted)); font-size: .96rem; }
.meta-line { font-family: var(--mono); font-size: .76rem; color: var(--accent) !important; margin: 0 0 .8rem !important; }
.deep { margin: 0 0 1rem; padding-left: 1.1rem; }
.deep li { color: color-mix(in srgb, var(--text) 86%, var(--muted)); font-size: .92rem; margin-bottom: .45rem; }
.deep li::marker { color: var(--accent); }
.deep b { color: var(--text); }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: .35rem; padding: 0; margin: 0 0 1rem; }
.tags li { font-family: var(--mono); font-size: .72rem; color: var(--muted); border: 1px solid var(--line-soft); border-radius: 6px; padding: .15rem .45rem; background: var(--bg-soft); }
.c-shot { margin: 0 0 1.1rem; }
.c-shot img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.c-shot figcaption { margin-top: .5rem; font-family: var(--mono); font-size: .72rem; color: var(--faint); line-height: 1.45; }
.go { font-family: var(--mono); font-size: .82rem; text-decoration: none; color: var(--accent); display: inline-flex; align-items: center; gap: .3rem; word-break: break-word; }
a.go { border-bottom: 1px solid transparent; width: fit-content; }
a.go:hover { border-bottom-color: var(--accent); }
.go.muted { color: var(--muted); }
/* "live website" link — green pulsing dot signals the deployed, working app */
.go-live { color: #2ecc71; }
a.go-live:hover { border-bottom-color: #2ecc71; }
.live-dot { width: .5rem; height: .5rem; border-radius: 50%; background: #2ecc71; flex: none; box-shadow: 0 0 0 0 rgba(46, 204, 113, .55); }
@media (prefers-reduced-motion: no-preference) {
  .live-dot { animation: live-pulse 1.8s ease-out infinite; }
  @keyframes live-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(46, 204, 113, .55); }
    70%  { box-shadow: 0 0 0 6px rgba(46, 204, 113, 0); }
    100% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0); }
  }
}
.pane-links { display: flex; flex-wrap: wrap; gap: .35rem 1.2rem; margin-top: .2rem; }
/* smooth open animation (enhancement; native details still works) */
@media (prefers-reduced-motion: no-preference) {
  .card[open] .c-body { animation: fadein .3s ease; }
  @keyframes fadein { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
}

/* ---------- Footer ---------- */
.footer { padding: clamp(3rem, 7vw, 4.5rem) clamp(1.25rem, 5vw, 2rem) 3.5rem; margin-top: 2rem; border-top: 1px solid var(--line); }
.footer .links { margin-bottom: 1rem; }
.colophon { color: var(--muted); font-family: var(--mono); font-size: .78rem; margin: 0; }

/* ---------- Command palette ---------- */
.palette { position: fixed; inset: 0; z-index: 300; display: grid; place-items: start center; padding-top: 14vh; }
.palette[hidden] { display: none; }
.palette-backdrop { position: absolute; inset: 0; background: color-mix(in srgb, #000 55%, transparent); backdrop-filter: blur(3px); }
.palette-box { position: relative; width: min(560px, 92vw); background: var(--bg-elev); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 70px rgba(0,0,0,.5); overflow: hidden; }
.palette-input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--text); font-family: var(--mono); font-size: 1rem; padding: 1.1rem 1.2rem; border-bottom: 1px solid var(--line); }
.palette-list { list-style: none; margin: 0; padding: .4rem; max-height: 52vh; overflow-y: auto; }
.palette-list li { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .65rem .8rem; border-radius: 9px; cursor: pointer; font-size: .95rem; }
.palette-list li .pk { font-family: var(--mono); font-size: .72rem; color: var(--faint); }
.palette-list li[aria-selected="true"], .palette-list li:hover { background: color-mix(in srgb, var(--accent) 14%, transparent); }
.palette-list li[aria-selected="true"] .pk { color: var(--accent); }
.palette-empty { padding: 1rem .8rem; color: var(--muted); font-family: var(--mono); font-size: .85rem; }

/* ---------- Tabbed showcase (browser-style folder tabs) ---------- */
.showcase { scroll-margin-top: 4rem; }
.block.showcase { max-width: min(96vw, 1180px); }
.tabs { display: flex; flex-wrap: wrap; gap: .3rem; position: relative; z-index: 2; }
.tabs button {
  flex: 0 0 auto; font-family: var(--mono); font-size: .85rem; color: var(--muted);
  background: var(--bg-soft); border: 1px solid var(--line); border-bottom: none;
  border-radius: 11px 11px 0 0; padding: .62rem 1.05rem; margin-bottom: -1px;
  cursor: pointer; white-space: nowrap; transition: color .15s, background .15s, border-color .15s;
}
.tabs button .t-sub { color: var(--faint); font-size: .78em; }
.tabs button:hover { color: var(--text); background: var(--bg-elev); }
.tabs button[aria-selected="true"] {
  color: var(--accent); background: var(--bg-card); border-color: var(--line);
  border-bottom: 1px solid var(--bg-card); position: relative; z-index: 3;
}
.tabs button[aria-selected="true"]::after { content: ""; position: absolute; left: -1px; right: -1px; top: -1px; height: 2px; background: var(--accent); border-radius: 11px 11px 0 0; }
.tabs button[aria-selected="true"] .t-sub { color: color-mix(in srgb, var(--accent) 65%, var(--muted)); }

.panels { border: 1px solid var(--line); border-radius: 0 13px 13px 13px; background: var(--bg-card); padding: clamp(1.25rem, 3vw, 2rem); position: relative; z-index: 1; }
.pane-demo .controls, .pane-demo .viz-fig { background: var(--bg-soft); }

.panel { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 1.9rem; align-items: start; }
.panel[hidden] { display: none; }
.pane-desc h3 { font-size: 1.4rem; margin: 0 0 .2rem; letter-spacing: -.015em; }
.pane-desc h3 .alt { color: var(--muted); font-weight: 400; font-size: .8em; }
.pane-desc .c-hook { display: block; color: var(--accent); font-family: var(--mono); font-size: .85rem; margin: 0 0 1rem; }
.pane-desc > p { color: color-mix(in srgb, var(--text) 90%, var(--muted)); margin: 0 0 1rem; }
.pane-desc .meta-line { margin-top: 0; }
.pane-demo { min-width: 0; }
.pane-demo .rig { grid-template-columns: 1fr; gap: 1rem; }
.pane-demo .demo { margin: 0; }
@media (max-width: 820px) { .panel { grid-template-columns: 1fr; gap: 1.2rem; } }

/* Mobile: tabs become one scrollable row instead of a wrapped, detached stack */
@media (max-width: 760px) {
  .tabs {
    flex-wrap: nowrap; overflow-x: auto; overflow-y: hidden;
    gap: .25rem; padding-top: 3px; margin-bottom: 0;
    scroll-snap-type: x proximity; scrollbar-width: none;
    -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain;
  }
  .tabs::-webkit-scrollbar { display: none; }
  .tabs button { scroll-snap-align: start; font-size: .8rem; padding: .55rem .85rem; }
  .tabs button .t-sub { display: none; }
}

/* Mobile: stack section header + caption so the title never wraps mid-word */
@media (max-width: 560px) {
  .block-head { flex-direction: column; align-items: flex-start; gap: .35rem; }
  /* CRISPR: label above sequence, condensed so the full guide + mismatches fit.
     Scoped to .crispr-stage so these win over the later base .seq* rules. */
  .crispr-stage .seq-row { flex-direction: column; align-items: flex-start; gap: .2rem; }
  .crispr-stage .seq-label { width: auto; text-align: left; }
  .crispr-stage .seq { font-size: .78rem; letter-spacing: .1em; }
}

/* Coffee panel: wide, horizontal — controls | curve | radar (side), flavour below */
#panel-coffee:not([hidden]) { display: block; }
#panel-coffee .pane-desc { max-width: 80ch; margin-bottom: 1.4rem; }
#panel-coffee .pane-demo .rig { display: grid; grid-template-columns: minmax(250px, 310px) minmax(0, 1fr) minmax(230px, 300px); gap: 1.3rem; align-items: start; }
#panel-coffee .pane-demo .viz { display: contents; }
#panel-coffee #curve { max-height: 250px; }
#panel-coffee #radar { max-width: 290px; }
#panel-coffee .flavour { grid-column: 1 / -1; margin-top: .2rem; }
@media (max-width: 900px) {
  #panel-coffee .pane-demo .rig { grid-template-columns: 1fr; }
  #panel-coffee .pane-demo .viz { display: block; }
  #panel-coffee #curve { max-height: none; }
  #panel-coffee #radar { max-width: 320px; }
}

/* Flavour card (coffee simulation outcome) */
.flavour { background: color-mix(in srgb, var(--accent) 8%, var(--bg-soft)); border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line)); border-radius: 11px; padding: .9rem 1.1rem; }
.flavour-tag { display: inline-block; font-family: var(--mono); font-size: .6rem; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-ink); background: var(--accent); border-radius: 4px; padding: .12rem .45rem; }
.flavour-note { margin: .55rem 0 .65rem; font-size: 1.05rem; line-height: 1.45; color: var(--text); }
.flavour-tags { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; padding: 0; margin: 0; }
.flavour-tags li { font-family: var(--mono); font-size: .72rem; color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line)); border-radius: 6px; padding: .16rem .55rem; }

/* Catalon: persistent output placeholder */
.po-out.po-empty, .po-out.po-empty .po-meta, .po-out.po-empty .po-row span { color: var(--faint); }

/* ---------- Interactive project demos ---------- */
.badge { display: inline-block; font-family: var(--mono); font-size: .6rem; letter-spacing: .04em; text-transform: uppercase; color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 50%, var(--line)); border-radius: 5px; padding: .06rem .35rem; margin-right: .45rem; vertical-align: middle; white-space: nowrap; }
.demo { margin: 1.1rem 0; padding: 1rem; border: 1px solid var(--line); border-radius: 11px; background: var(--bg-soft); }
.demo-head { font-family: var(--mono); font-size: .78rem; color: var(--muted); margin-bottom: .85rem; }
.demo-head code { font-size: .92em; }
.demo-tag { display: inline-block; font-size: .6rem; text-transform: uppercase; letter-spacing: .05em; color: var(--accent-ink); background: var(--accent); border-radius: 4px; padding: .1rem .42rem; margin-right: .5rem; }
.demo-btn { font-family: var(--mono); font-size: .82rem; color: var(--accent-ink); background: var(--accent); border: 0; border-radius: 8px; padding: .55rem .95rem; cursor: pointer; transition: transform .12s ease, opacity .2s; }
.demo-btn:hover { transform: translateY(-1px); }
.demo-btn:disabled { opacity: .5; cursor: default; transform: none; }
.demo-note { font-family: var(--mono); font-size: .72rem; color: var(--faint); line-height: 1.6; margin: .85rem 0 0; }
.demo .ctrl { margin: .9rem 0 0; }

.po-email { font-family: var(--mono); font-size: .76rem; line-height: 1.55; color: var(--muted); background: var(--bg); border: 1px solid var(--line-soft); border-radius: 8px; padding: .75rem .85rem; margin: 0 0 .9rem; white-space: pre-wrap; }
.stages { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .9rem; }
.stages span { font-family: var(--mono); font-size: .68rem; color: var(--faint); border: 1px solid var(--line-soft); border-radius: 6px; padding: .26rem .5rem; opacity: .5; transition: color .25s, border-color .25s, opacity .25s, background .25s; }
.stages span.on { color: var(--accent); border-color: var(--accent); opacity: 1; background: color-mix(in srgb, var(--accent) 13%, transparent); }
.stages span.done { color: var(--muted); opacity: 1; }
.po-out { margin-top: 1rem; font-family: var(--mono); font-size: .8rem; border-top: 1px dashed var(--line); padding-top: .9rem; }
.po-meta { color: var(--accent); margin-bottom: .55rem; }
.po-checks { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: .3rem .8rem; padding: 0; margin: 0 0 .7rem; }
.po-checks li { font-family: var(--mono); font-size: .76rem; color: var(--accent); }
.po-row { display: flex; justify-content: space-between; gap: 1rem; padding: .32rem 0; border-bottom: 1px solid var(--line-soft); color: var(--muted); }
.po-row:last-child { border-bottom: 0; }

.seis, .cplx, .ocv { width: 100%; height: auto; display: block; border-radius: 8px; background: var(--bg); border: 1px solid var(--line-soft); }
.cmdline { display: flex; align-items: center; gap: .5rem; margin-top: .85rem; border: 1px solid var(--line); border-radius: 8px; padding: .5rem .75rem; background: var(--bg); }
.cmdline:focus-within { border-color: var(--accent); }
.cmdline .prompt { font-family: var(--mono); color: var(--accent); }
.cmd { flex: 1; border: 0; outline: 0; background: transparent; color: var(--text); font-family: var(--mono); font-size: .85rem; min-width: 0; }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .7rem; }
.chips button { font-family: var(--mono); font-size: .72rem; color: var(--muted); background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: .3rem .7rem; cursor: pointer; transition: color .15s, border-color .15s; }
.chips button:hover { color: var(--accent); border-color: var(--accent); }
.cmd-echo { font-family: var(--mono); font-size: .74rem; color: var(--faint); margin-top: .7rem; min-height: 1.2em; }

.cplx-out, .ocv-out { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .6rem; margin-top: .9rem; }
.cplx-out > div, .ocv-out > div { background: var(--bg); border: 1px solid var(--line-soft); border-radius: 8px; padding: .6rem .7rem; }
.cplx-out span, .ocv-out span { display: block; font-family: var(--mono); font-size: .65rem; color: var(--faint); margin-bottom: .15rem; }
.cplx-out b, .ocv-out b { font-size: 1.05rem; font-variant-numeric: tabular-nums; }

/* Battery electrode schematic */
.batt-viz { display: grid; grid-template-columns: minmax(0, 1fr) minmax(170px, 220px); gap: 1rem; align-items: stretch; margin-bottom: .3rem; }
.batt-fig { margin: 0; background: var(--bg-soft); border: 1px solid var(--line-soft); border-radius: 10px; padding: .8rem .8rem .5rem; }
.batt-fig figcaption { font-family: var(--mono); font-size: .68rem; color: var(--faint); margin-top: .4rem; text-align: center; }
.batt-fig .ocv, .batt-fig .cells { background: transparent; border: 0; width: 100%; height: auto; display: block; }
@media (max-width: 620px) { .batt-viz { grid-template-columns: 1fr; } }

/* CRISPR off-target scanner */
.crispr-stage { background: var(--bg); border: 1px solid var(--line-soft); border-radius: 9px; padding: .9rem 1rem; margin-bottom: .9rem; overflow-x: auto; }
.seq-row { display: flex; align-items: center; gap: .9rem; margin: .35rem 0; }
.seq-label { font-family: var(--mono); font-size: .68rem; color: var(--faint); width: 8.5rem; flex: 0 0 auto; text-align: right; }
.seq { font-family: var(--mono); font-size: 1.05rem; letter-spacing: .22em; white-space: nowrap; }
.seq .m { color: var(--muted); }
.seq .x { color: var(--accent-2); font-weight: 700; }
.cr-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(115px, 1fr)); gap: .6rem; margin-bottom: .8rem; }
.cr-stats > div { background: var(--bg); border: 1px solid var(--line-soft); border-radius: 8px; padding: .55rem .7rem; }
.cr-stats span { display: block; font-family: var(--mono); font-size: .64rem; color: var(--faint); }
.cr-stats b { font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.cr-verdict { font-family: var(--mono); font-size: .88rem; border: 1px solid var(--line); border-radius: 8px; padding: .6rem .8rem; margin-bottom: .8rem; }
.cr-verdict.good { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.cr-verdict.bad { color: var(--accent-2); border-color: color-mix(in srgb, var(--accent-2) 42%, var(--line)); background: color-mix(in srgb, var(--accent-2) 10%, transparent); }

/* ---------- Focus + reveal ---------- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: no-preference) {
  .hero-inner > * { animation: rise .6s both; }
  .hero h1 { animation-delay: .05s; } .tagline { animation-delay: .11s; }
  .subline { animation-delay: .17s; } .links { animation-delay: .23s; } .hint { animation-delay: .3s; }
  @keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
}