/* Xyon Labs: tokens */
:root {
  --bg: #0A0B0D;
  --surface: #111318;
  --surface-2: #171A20;
  --line: #232830;
  --line-strong: #343A45;
  --ink: #ECEDEF;
  --ink-dim: #A2A8B3;
  --ink-faint: #6E7480;
  --accent: #FF5722;
  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: Manrope, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 64px);
  --maxw: 1360px;
  --col-head: 280px;
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); color-scheme: dark; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
p a, li a, dd a, .link { text-decoration: underline; text-decoration-color: var(--ink-faint); text-underline-offset: 0.18em; }
p a:hover, li a:hover, dd a:hover, .link:hover { text-decoration-color: var(--accent); }
h1, h2, h3 { margin: 0; font-weight: 400; line-height: 1.1; letter-spacing: -0.01em; }
h1, h2 { font-family: var(--serif); }
h1 { font-size: clamp(2.25rem, 4.6vw, 4rem); }
h2 { font-size: clamp(1.75rem, 2.6vw, 2.5rem); }
h3 { font-family: var(--sans); font-weight: 600; font-size: 1.05rem; letter-spacing: 0; }
p { margin: 0 0 1em; max-width: 64ch; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.mono { font-family: var(--mono); font-size: 0.8rem; color: var(--ink-dim); font-weight: 400; }
.muted { color: var(--ink-dim); font-size: 0.9rem; }
.hidden { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #000; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* tag: hardware / simulation, small and neutral */
.tag {
  display: inline-block; font-family: var(--mono); font-size: 0.7rem; color: var(--ink-dim);
  border: 1px solid var(--line-strong); padding: 1px 7px; border-radius: 999px; margin-left: 8px; vertical-align: middle; white-space: nowrap;
}
figcaption .tag { margin-left: 12px; }

/* buttons */
.button {
  display: inline-block; background: var(--accent); color: #0A0B0D; font-weight: 600; font-size: 0.95rem;
  padding: 12px 22px; border-radius: var(--radius); border: 0; cursor: pointer; font-family: inherit; line-height: 1.2;
}
.button:hover { background: #FF6D40; }

/* header */
.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 18px var(--gutter); max-width: var(--maxw); margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: 0.02em; }
.brand__mark { width: 22px; height: 22px; }
.site-nav { display: flex; align-items: center; gap: clamp(14px, 2.5vw, 32px); font-size: 0.95rem; }
.site-nav a { color: var(--ink-dim); padding: 6px 0; border-bottom: 1px solid transparent; }
.site-nav a:hover { color: var(--ink); }
body[data-page="work"] .site-nav a[data-nav="work"],
body[data-page="about"] .site-nav a[data-nav="about"] { color: var(--ink); border-bottom-color: var(--accent); }
.site-nav__cta { color: var(--ink) !important; border: 1px solid var(--line-strong) !important; padding: 8px 14px !important; border-radius: var(--radius); }
.site-nav__cta:hover { border-color: var(--ink-dim) !important; }

main { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
main > :last-child { border-bottom: 0; }

/* hero */
.hero { padding: 0 0 clamp(40px, 6vw, 88px); border-bottom: 1px solid var(--line); }
.hero .figure--hero { margin: 0; }
.hero__text {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(24px, 4vw, 64px); align-items: end;
  padding: clamp(28px, 4vw, 56px) 0 clamp(24px, 3vw, 40px);
}
.hero__text h1 { font-size: clamp(2.4rem, 5.2vw, 4.75rem); max-width: 14ch; }
.hero__lede { color: var(--ink-dim); font-size: 1.05rem; max-width: 46ch; }
.hero__actions { display: flex; gap: 24px; align-items: center; margin-top: 22px; }
.hero .figure figcaption { padding-top: 12px; }

/* sections: narrow head column + wide body */
.section {
  display: grid; grid-template-columns: var(--col-head) minmax(0, 1fr); gap: 24px clamp(24px, 4vw, 72px);
  padding: clamp(40px, 6vw, 88px) 0; border-bottom: 1px solid var(--line);
}
.section__head h2 { margin-bottom: 10px; }
.section__head h2::before { content: ""; display: block; width: 28px; height: 2px; background: var(--accent); margin-bottom: 18px; }
.section__head p { color: var(--ink-dim); font-size: 0.95rem; }
.section__body { min-width: 0; }

/* capabilities */
.caps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.cap { padding: 26px 28px 26px 0; border-bottom: 1px solid var(--line); }
.cap:nth-child(odd) { border-right: 1px solid var(--line); }
.cap:nth-child(even) { padding-left: 28px; padding-right: 0; }
.cap h3 { margin-bottom: 8px; }
.cap p { color: var(--ink-dim); font-size: 0.95rem; }
.cap__links { margin-top: 10px; font-size: 0.85rem; display: flex; gap: 14px; flex-wrap: wrap; }
.cap__links a { color: var(--ink); }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 24px; }
.card { display: flex; flex-direction: column; min-width: 0; }
.card--big { grid-column: span 2; }
.card__media { aspect-ratio: 16 / 10; background: var(--surface); overflow: hidden; border-radius: var(--radius); }
.card--big .card__media { aspect-ratio: 16 / 8; }
.card__media .still { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(.2,.8,.2,1); }
.card:hover .card__media .still { transform: scale(1.025); }
.still--fallback { display: grid; place-items: center; color: var(--ink-faint); font-family: var(--mono); font-size: 0.75rem;
  background: linear-gradient(135deg, #151820, #0E1014 60%, #1A1410); }
.card__body { padding: 14px 0 0; }
.card__meta { margin-bottom: 6px; }
.card h3 { font-family: var(--serif); font-weight: 400; font-size: 1.45rem; margin-bottom: 6px; }
.card:hover h3 { text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 0.15em; }
.card p:not(.card__meta) { color: var(--ink-dim); font-size: 0.92rem; }

/* process (a real sequence) */
.process { counter-reset: step; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.process li { counter-increment: step; border-top: 1px solid var(--line-strong); padding-top: 16px; }
.process li::before { content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 0.8rem; color: var(--accent); display: block; margin-bottom: 14px; }
.process h3 { margin-bottom: 8px; }
.process p { color: var(--ink-dim); font-size: 0.95rem; }

/* spec sheet */
.spec { margin: 0; border-top: 1px solid var(--line); }
.spec__row { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec dt { font-family: var(--mono); font-size: 0.8rem; color: var(--ink-dim); padding-top: 2px; }
.spec dd { margin: 0; font-size: 0.95rem; }
.spec--stack .spec__row { grid-template-columns: 1fr; gap: 4px; }

/* record */
.record li { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); }
.record li:last-child { border-bottom: 1px solid var(--line); }
.record strong { font-weight: 600; display: block; margin-bottom: 4px; }
.record p { color: var(--ink-dim); font-size: 0.92rem; }

/* cta */
.cta { padding: clamp(56px, 8vw, 120px) 0; text-align: left; }
.cta h2 { font-size: clamp(2rem, 4vw, 3.5rem); max-width: 18ch; margin-bottom: 16px; }
.cta p { color: var(--ink-dim); }
.cta .button { margin-top: 8px; }

/* figures / video */
.figure { margin: 0; }
.figure__frame { position: relative; background: var(--surface); overflow: hidden; border-radius: var(--radius); }
.figure__frame { background-size: cover; background-position: center; }
.figure__video { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.figure--contain .figure__frame::before { content: ""; position: absolute; inset: -32px; background: inherit; background-size: cover; background-position: center; filter: blur(28px) brightness(0.45) saturate(0.8); }
.figure--contain .figure__frame::after { content: ""; position: absolute; inset: 0; background: rgba(10,11,13,0.25); }
.figure--contain .figure__video { object-fit: contain; z-index: 1; }
.figure--contain .figure__open { z-index: 2; }
.figure[data-key="early_bridge"] .figure__video { transform: scale(1.2); transform-origin: 50% 100%; }
.figure__open {
  position: absolute; left: 14px; bottom: 14px; display: inline-flex; align-items: center; gap: 10px;
  background: rgba(10,11,13,0.72); color: var(--ink); border: 1px solid rgba(255,255,255,0.18);
  padding: 7px 12px; border-radius: 999px; font: inherit; font-size: 0.82rem; cursor: pointer; backdrop-filter: blur(6px);
}
.figure__open::before { content: ""; width: 0; height: 0; border-left: 8px solid var(--ink); border-top: 5px solid transparent; border-bottom: 5px solid transparent; }
.figure__open:hover { border-color: var(--accent); }
.figure__open .mono:empty { display: none; }
.figure figcaption { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0 0; font-size: 0.85rem; color: var(--ink-dim); }
.figure--hero .figure__frame { aspect-ratio: 21 / 9 !important; max-height: 78vh; }
.figure--fallback .figure__frame { display: grid; place-items: center; color: var(--ink-faint);
  background: linear-gradient(135deg, #151820, #0E1014 60%, #1A1410); }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 24px; }
.gallery--small { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gallery .figure--small figcaption { font-size: 0.78rem; }

/* page head (work, about, contact, 404) */
.page-head { padding: clamp(32px, 5vw, 72px) 0 clamp(28px, 4vw, 48px); border-bottom: 1px solid var(--line); }
.page-head h1 { max-width: 20ch; margin-bottom: 18px; }
.page-head p { color: var(--ink-dim); font-size: 1.05rem; max-width: 56ch; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 24px; }
.filters button { font: inherit; font-size: 0.85rem; color: var(--ink-dim); background: none; border: 1px solid var(--line-strong); padding: 6px 14px; border-radius: 999px; cursor: pointer; }
.filters button[aria-pressed="true"] { color: var(--ink); border-color: var(--ink); }
.cards.work { padding: clamp(32px, 4vw, 56px) 0; border-bottom: 1px solid var(--line); }
.work__item.is-hidden { display: none; }
.more li { padding: 20px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 4px 32px; }
.more li:last-child { border-bottom: 1px solid var(--line); }
.more h3 { grid-column: 1; }
.more .mono { grid-column: 1; margin: 4px 0 0; }
.more p:not(.mono) { grid-column: 2; grid-row: 1 / span 2; color: var(--ink-dim); font-size: 0.95rem; }

/* project page */
.project__head { padding: clamp(28px, 4vw, 56px) 0 clamp(20px, 3vw, 36px); }
.project__head .mono { margin-bottom: 18px; }
.project__head .mono a { text-decoration: none; color: var(--ink-dim); }
.project__head .mono a:hover { color: var(--ink); }
.project__subtitle { font-size: 1.15rem; color: var(--ink-dim); margin-top: 14px; max-width: 48ch; }
.project__grid { display: grid; grid-template-columns: var(--col-head) minmax(0, 1fr); gap: 32px clamp(24px, 4vw, 72px); padding: clamp(36px, 5vw, 64px) 0; }
.project__spec { position: sticky; top: 24px; align-self: start; }
.project__content { max-width: 68ch; }
.overview p { font-size: 1.1rem; line-height: 1.65; }
.car { margin-top: 36px; border-top: 1px solid var(--line); }
.car__row { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.car__row .car__label { font-family: var(--mono); font-size: 0.8rem; color: var(--ink-dim); padding-top: 3px; margin: 0; }
.car__row p { font-size: 0.98rem; }
.highlights { margin-top: 36px; }
.highlights h2, .subsection h2, .project__gallery h2 { font-size: 1.5rem; margin-bottom: 14px; }
.highlights li { padding: 8px 0 8px 18px; border-left: 2px solid var(--line-strong); margin-bottom: 6px; font-size: 0.95rem; }
.subsection { margin-top: 44px; }
.subsection p { color: var(--ink-dim); margin-bottom: 18px; }
.subsection .section__head p { margin-top: 4px; }
.subsection .gallery { margin-top: 0; }
.subsection .section__body > .figure--lead + .gallery { margin-top: 24px; }
.subsection--text .section__body p { color: var(--ink-dim); max-width: 60ch; }
.project__gallery { padding: clamp(28px, 4vw, 56px) 0; border-top: 1px solid var(--line); }
.pager { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); margin-top: 24px; }
.pager a { display: flex; flex-direction: column; gap: 4px; padding: 22px 0; font-family: var(--serif); font-size: 1.4rem; }
.pager a[rel="next"] { text-align: right; align-items: flex-end; border-left: 1px solid var(--line); padding-left: 24px; }
.pager a:hover { color: var(--accent); }

/* about */
.team { display: grid; gap: 48px; }
.person { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 28px; align-items: start; }
.person__photo { width: 160px; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); filter: grayscale(1) contrast(1.05); }
.person__photo--blank { background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; }
.person__photo--blank span { font-family: var(--serif); font-size: 2.6rem; color: var(--ink-faint); letter-spacing: 0.04em; }
.person h3 { font-family: var(--serif); font-weight: 400; font-size: 1.6rem; }
.person .mono { margin: 4px 0 14px; }
.person p:not(.mono) { color: var(--ink-dim); font-size: 0.95rem; }
.person__links { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.9rem; }
.person__links a { color: var(--ink); }

/* contact */
.contact .section__head p { color: var(--ink); font-size: 0.95rem; }
.contact .section__head p a { color: var(--ink); }
.form { max-width: 560px; }
.form__row { display: grid; gap: 6px; margin-bottom: 18px; }
.form label { font-size: 0.85rem; color: var(--ink-dim); }
.form input, .form textarea { font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 11px 12px; width: 100%; }
.form input:focus, .form textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.form--fallback p { font-size: 1.05rem; }
.form--fallback .button { text-decoration: none; }
.contact__body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px clamp(24px, 4vw, 64px); align-items: start; }
.contact__aside h3 { margin-bottom: 12px; }
.contact__list li { padding: 10px 0; border-top: 1px solid var(--line); color: var(--ink-dim); font-size: 0.92rem; }
.contact__list li:last-child { border-bottom: 1px solid var(--line); }

/* footer */
.site-footer { max-width: var(--maxw); margin: 0 auto; padding: 40px var(--gutter) 32px; }
.site-footer__grid { display: grid; grid-template-columns: 2fr 1fr 2fr; gap: 24px; border-top: 1px solid var(--line); padding-top: 32px; }
.site-footer__brand { font-weight: 600; margin-bottom: 4px; }
.site-footer nav { display: flex; flex-direction: column; gap: 8px; font-size: 0.95rem; color: var(--ink-dim); }
.site-footer nav a:hover { color: var(--ink); }
.site-footer .muted { font-size: 0.8rem; margin-top: 8px; }
.site-footer__legal { margin-top: 32px; }

/* lightbox */
.lightbox { background: #000; border: 0; padding: 0; max-width: min(96vw, 1400px); width: 96vw; color: var(--ink); }
.lightbox::backdrop { background: rgba(0,0,0,0.85); }
.lightbox video { width: 100%; max-height: 86vh; background: #000; }
.lightbox__close { position: absolute; top: 10px; right: 10px; z-index: 2; font: inherit; font-size: 0.85rem; background: rgba(10,11,13,0.8); color: var(--ink); border: 1px solid var(--line-strong); padding: 6px 12px; border-radius: 999px; cursor: pointer; }

/* responsive */
@media (max-width: 1080px) {
  .section, .project__grid { grid-template-columns: 1fr; gap: 20px; }
  .project__spec { position: static; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card--big { grid-column: span 2; }
  .process { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 760px) {
  body { font-size: 0.97rem; }
  .site-nav { gap: 16px; font-size: 0.9rem; }
  .site-nav__cta { border: 0 !important; padding: 6px 0 !important; }
  .hero__text { grid-template-columns: 1fr; gap: 20px; }
  .figure--hero .figure__frame { aspect-ratio: 16 / 10 !important; }
  .caps { grid-template-columns: 1fr; }
  .cap, .cap:nth-child(even) { padding-left: 0; padding-right: 0; border-right: 0; }
  .cards, .gallery, .gallery--small, .project__content .gallery--small { grid-template-columns: 1fr; }
  .card--big { grid-column: auto; }
  .card--big .card__media { aspect-ratio: 16 / 10; }
  .spec__row, .car__row, .more li, .record li, .person { grid-template-columns: 1fr; gap: 6px; }
  .project__spec { order: 2; }
  .contact__body { grid-template-columns: 1fr; }
  .more p:not(.mono) { grid-column: 1; grid-row: auto; }
  .person__photo { width: 120px; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .pager a { font-size: 1.1rem; }
  .figure figcaption { flex-direction: column; align-items: flex-start; gap: 6px; }
  figcaption .tag { margin-left: 0; }
}
@media (max-width: 480px) {
  .site-header { padding-top: 14px; padding-bottom: 14px; }
  .brand span { display: none; }
}

/* mobile nav: only the CTA survives below 760px, so expose Work/About in the footer (already there). */

@media (prefers-reduced-motion: reduce) {
  .card__media .still { transition: none; }
  .figure__video { display: none; }  /* poster is shown via background in JS-less reduced-motion mode */
  .figure__frame { background-size: cover; background-position: center; }
}

/* still figures and lead figures (added for LiDAR stills / dataset grid) */
.figure__frame--img { aspect-ratio: auto; }
.figure__frame--img img { width: 100%; height: auto; }
.figure--hero .figure__frame--img { aspect-ratio: 21 / 9; }
.figure--hero .figure__frame--img img { width: 100%; height: 100%; object-fit: cover; }
.figure__frame--img img { width: 100%; height: 100%; object-fit: cover; }
.figure--still .figure__frame--img { aspect-ratio: 16 / 10; }
.figure--lead { margin-bottom: 24px; }