/* ==========================================================================
   Design tokens. No bright accents: color comes from the imagery.
   Contrast on --bg: ivory 15.6:1, gray 6.8:1, faint gray 5.3:1 (WCAG AA).
   ========================================================================== */
:root {
  --bg: #161616;            /* near-black charcoal */
  --surface: #1e1e1e;
  --text: #f3eee4;          /* warm ivory */
  --muted: #a39e94;         /* warm gray, secondary text */
  --faint: #8f8a81;         /* captions, meta */
  --line: #3a3835;          /* fine dividers */

  --font-serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --wrap: 94rem;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --radius: 4px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.65 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.25em; }
a:hover { color: var(--muted); }
:focus-visible { outline: 2px solid var(--text); outline-offset: 4px; border-radius: 2px; }
main:focus { outline: none; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0 0 0.5em; font-weight: 400; text-wrap: balance; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 10;
  background: var(--text); color: var(--bg); padding: 0.6rem 1rem;
}
.skip-link:focus { top: 1rem; }

/* Type roles */
.display {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 7.5vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.015em;
}
.label {
  font: 500 clamp(1.125rem, 1.8vw, 1.5rem)/1.2 var(--font-sans);
  text-transform: uppercase; letter-spacing: 0.02em;
}
.eyebrow {
  font: 500 0.8125rem/1.3 var(--font-sans);
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); margin-bottom: 1.25rem;
}
.eyebrow a { text-decoration: none; }
.eyebrow a:hover { color: var(--text); }
.lede { font-size: clamp(1.125rem, 1.9vw, 1.375rem); line-height: 1.5; color: var(--muted); max-width: 38em; }
.meta { color: var(--faint); font-size: 0.9375rem; }

/* Visible marker for content still to be supplied. Search the repo for "[TODO". */
.todo { color: var(--muted); border-bottom: 1px dashed var(--muted); }

/* ---------- Header ---------- */
.site-header {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1.5rem 2rem;
  flex-wrap: wrap;
  padding-block: clamp(1.25rem, 2.5vw, 1.75rem);
  border-bottom: 1px solid var(--line);
  /* divider spans the content width, like the mockup */
  max-width: calc(var(--wrap) - 2 * var(--gutter));
  padding-inline: 0;
  width: calc(100% - 2 * var(--gutter));
}
.brand { text-decoration: none; display: grid; gap: 0.35rem; }
.brand:hover { color: var(--text); }
.brand__name { font: 500 clamp(1.25rem, 2.2vw, 1.75rem)/1 var(--font-sans); text-transform: uppercase; letter-spacing: 0.01em; }
.brand__descriptor { font: 400 clamp(0.8125rem, 1.3vw, 1.0625rem)/1.2 var(--font-sans); text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(1.25rem, 2.5vw, 2rem); }
.site-nav a {
  display: inline-block; padding-block: 0.6rem;
  font: 400 clamp(0.875rem, 1.3vw, 1.0625rem)/1 var(--font-sans);
  text-transform: uppercase; letter-spacing: 0.04em; text-decoration: none;
  background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat;
  transition: background-size .3s var(--ease);
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); background-size: 100% 1px; }
@media (min-width: 40rem) { .site-nav { padding-top: 0.35rem; } }

/* ---------- Homepage ---------- */
.intro { padding-block: clamp(3.5rem, 9vw, 7.5rem) clamp(2.5rem, 5vw, 3.5rem); }
.intro__headline { margin-bottom: 0.35em; }
.intro__headline span { display: block; }
@media (min-width: 44rem) { .intro__headline span { white-space: nowrap; } }
.intro__subline { color: var(--muted); font-size: clamp(1.125rem, 1.8vw, 1.375rem); margin: 0; }

.hero-clip { margin-bottom: clamp(2rem, 4vw, 3rem); }
.hero-clip video { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--radius); background: var(--surface); }

/* 2x2 tile grid */
.tiles {
  list-style: none; margin: 0; padding: 0 0 clamp(3rem, 7vw, 5rem);
  display: grid; gap: clamp(2rem, 4vw, 2.75rem) clamp(1rem, 1.5vw, 1.25rem);
  grid-template-columns: 1fr;
}
@media (min-width: 44rem) { .tiles { grid-template-columns: 1fr 1fr; } }
.tile__link { display: block; text-decoration: none; }
.tile__link:hover { color: var(--text); }
.tile__media { aspect-ratio: 5 / 4; overflow: hidden; border-radius: var(--radius); background: var(--surface); margin-bottom: 1rem; }
.tile__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease), opacity .4s var(--ease); }
.tile__link:hover .tile__media img, .tile__link:focus-visible .tile__media img { transform: scale(1.025); opacity: 0.88; }
.tile__title { margin: 0 0 0.4rem; }
.tile__title span {
  background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat;
  transition: background-size .4s var(--ease);
  padding-bottom: 0.1em;
}
.tile__link:hover .tile__title span, .tile__link:focus-visible .tile__title span { background-size: 100% 1px; }
.tile__subtitle { color: var(--muted); margin: 0; font-size: clamp(0.9375rem, 1.3vw, 1.0625rem); letter-spacing: 0.01em; }

/* ---------- Generic page ---------- */
.page { padding-block: clamp(3rem, 8vw, 6rem) clamp(4rem, 8vw, 6rem); }
.page__head { margin-bottom: clamp(2.5rem, 5vw, 4rem); max-width: 60rem; }
.prose { max-width: 40rem; }
.prose h2 { font: 400 clamp(1.75rem, 3vw, 2.5rem)/1.1 var(--font-serif); margin-top: 1.75em; }
.prose a { text-decoration: underline; }
.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: 0.4em; }

/* ---------- Category pages & Work index: project list ---------- */
.project-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.project-row { border-bottom: 1px solid var(--line); }
.project-row__link {
  display: grid; gap: 1rem 2rem; align-items: center; text-decoration: none;
  padding-block: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: 1fr;
}
@media (min-width: 44rem) { .project-row__link { grid-template-columns: minmax(0, 18rem) minmax(0, 1fr) auto; } }
.project-row__link:hover { color: var(--text); }
.project-row__media { aspect-ratio: 16 / 10; overflow: hidden; border-radius: var(--radius); background: var(--surface); }
.project-row__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease), opacity .4s var(--ease); }
.project-row__link:hover .project-row__media img, .project-row__link:focus-visible .project-row__media img { transform: scale(1.025); opacity: 0.88; }
.project-row__title { font: 400 clamp(1.75rem, 3.4vw, 2.75rem)/1.05 var(--font-serif); margin: 0 0 0.35rem; }
.project-row__desc { color: var(--muted); margin: 0; max-width: 36em; }
.project-row__arrow { font-size: 1.5rem; color: var(--muted); transition: transform .4s var(--ease), color .3s; }
.project-row__link:hover .project-row__arrow { transform: translateX(6px); color: var(--text); }
@media (max-width: 43.99rem) { .project-row__arrow { display: none; } }

.work-group { padding-top: clamp(2rem, 5vw, 3.5rem); }
.work-group__head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.work-group__head h2 { margin: 0; }

/* ---------- Project template ---------- */
.project { padding-bottom: clamp(4rem, 8vw, 6rem); }
.project__opening { margin-top: clamp(1.5rem, 3vw, 2.5rem); }
.project__opening img, .project__opening lite-youtube {
  width: 100%; max-width: none; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--radius); background-color: var(--surface);
}
.project__intro {
  display: grid; gap: 2rem clamp(2rem, 6vw, 6rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--line);
}
@media (min-width: 56rem) { .project__intro { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); } }
.project__title { margin-bottom: 0.3em; }
.project__description { font-size: clamp(1.125rem, 1.9vw, 1.375rem); line-height: 1.5; color: var(--muted); max-width: 32em; margin-bottom: 2rem; }
.facts { margin: 0; display: grid; gap: 0; align-self: end; }
.facts > div { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding-block: 0.85rem; border-top: 1px solid var(--line); }
.facts > div:last-child { border-bottom: 1px solid var(--line); }
.facts dt { font: 500 0.75rem/1.6 var(--font-sans); text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); padding-top: 0.1rem; }
.facts dd { margin: 0; }

.cta {
  display: inline-flex; align-items: center; gap: 0.75rem;
  font: 500 0.9375rem/1 var(--font-sans); text-transform: uppercase; letter-spacing: 0.06em;
  text-decoration: none; padding: 1rem 0; border-bottom: 1px solid var(--text);
}
.cta::after { content: "→"; transition: transform .4s var(--ease); }
.cta:hover { color: var(--text); }
.cta:hover::after { transform: translateX(5px); }
span.cta { border-bottom-style: dashed; border-color: var(--muted); color: var(--muted); }
span.cta::after { content: none; }

.section { padding-block: clamp(2.5rem, 6vw, 4.5rem); border-bottom: 1px solid var(--line); }
.section__grid { display: grid; gap: 1.5rem clamp(2rem, 6vw, 6rem); }
@media (min-width: 56rem) { .section__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); } }
.section__title { font: 500 0.8125rem/1.3 var(--font-sans); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0; padding-top: 0.5rem; }
.section .prose p { font-size: clamp(1.0625rem, 1.5vw, 1.1875rem); }

/* Visuals */
.visuals { list-style: none; margin: 0; padding: 0; display: grid; gap: clamp(1rem, 1.5vw, 1.25rem); grid-template-columns: 1fr; }
@media (min-width: 44rem) {
  .visuals { grid-template-columns: repeat(2, 1fr); }
  .visuals li:first-child:nth-last-child(odd) { grid-column: 1 / -1; }
}
.visuals figure { margin: 0; }
.visuals img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--radius); background: var(--surface); }
.visuals li:first-child:nth-last-child(odd) img { aspect-ratio: 21 / 9; }
.visuals figcaption { color: var(--faint); font-size: 0.875rem; margin-top: 0.6rem; }

/* Excerpts / findings */
.highlights { list-style: none; margin: 0; padding: 0; display: grid; gap: 2rem; }
.highlight blockquote { margin: 0; font: italic 400 clamp(1.5rem, 2.8vw, 2.25rem)/1.25 var(--font-serif); }
.highlight p { margin: 0; }
.highlight__source { color: var(--faint); font-size: 0.875rem; margin-top: 0.75rem !important; }

/* Research framework: an original, typographic diagram (see energy project) */
.framework { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: step; }
@media (min-width: 56rem) { .framework { grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); } }
.framework__step {
  counter-increment: step; position: relative;
  padding: 1.5rem 0 1.75rem; border-top: 1px solid var(--line);
}
@media (min-width: 56rem) {
  .framework__step { padding: 1.5rem 2rem 0 0; }
  .framework__step + .framework__step { padding-left: 2rem; border-left: 1px solid var(--line); }
}
.framework__step::before {
  content: counter(step, decimal-leading-zero);
  display: block; font: 400 clamp(2.5rem, 5vw, 4rem)/1 var(--font-serif); color: var(--faint); margin-bottom: 1rem;
}
.framework__step h3 { font: 500 0.9375rem/1.3 var(--font-sans); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.75rem; }
.framework__step ul { margin: 0; padding: 0; list-style: none; color: var(--muted); }
.framework__step li { padding-block: 0.45rem; border-top: 1px solid var(--line); }
.framework__step li:first-child { border-top: 0; }

.sources { font-size: 0.9375rem; color: var(--muted); padding-left: 1.2em; }
.sources li { margin-bottom: 0.5em; }

.project__cta { padding-block: clamp(2.5rem, 6vw, 4.5rem); text-align: left; }
.project__next { padding-top: clamp(2rem, 5vw, 3rem); }

/* Click-to-load Vimeo (same look as the YouTube embed) */
.video-facade { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.video-facade img { width: 100%; height: 100%; object-fit: cover; }
.video-facade__play {
  position: absolute; inset: 0; display: block;
  background: no-repeat center / 76px 76px url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 76 76"><circle cx="38" cy="38" r="37" fill="%23161616" fill-opacity=".55" stroke="%23f3eee4" stroke-width="1.5"/><path d="M32 27v22l18-11z" fill="%23f3eee4"/></svg>');
  transition: background-color .3s var(--ease);
}
.video-facade__play:hover { background-color: rgb(22 22 22 / 0.15); }
.video-facade__play:focus-visible { outline-offset: -8px; }
.video-facade iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* lite-youtube: understated play button */
lite-youtube { max-width: none; }
lite-youtube > .lty-playbtn {
  filter: none; background-size: 76px 76px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 76 76"><circle cx="38" cy="38" r="37" fill="%23161616" fill-opacity=".55" stroke="%23f3eee4" stroke-width="1.5"/><path d="M32 27v22l18-11z" fill="%23f3eee4"/></svg>');
}
lite-youtube > .lty-playbtn:focus-visible { outline-offset: -8px; }
lite-youtube::before { font-family: var(--font-sans); }

/* ---------- Contact ---------- */
.contact-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); max-width: 40rem; }
.contact-list li { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding-block: 1.25rem; border-bottom: 1px solid var(--line); }
.contact-list .label-sm { font: 500 0.75rem/1.9 var(--font-sans); text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); }
.contact-list a, .contact-list .todo { font: 400 clamp(1.25rem, 2.4vw, 1.75rem)/1.2 var(--font-serif); }

/* ---------- Footer ---------- */
.site-footer {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 1rem 2rem;
  padding-block: clamp(1.5rem, 3vw, 2rem) clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  max-width: calc(var(--wrap) - 2 * var(--gutter));
  padding-inline: 0; width: calc(100% - 2 * var(--gutter));
}
.site-footer__line, .site-footer__links {
  font: 400 clamp(0.8125rem, 1.2vw, 1rem)/1.4 var(--font-sans);
  text-transform: uppercase; letter-spacing: 0.04em; margin: 0;
}
.site-footer__line { color: var(--muted); }
.site-footer__links { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.site-footer__links a { text-decoration: none; }
.site-footer__links a:hover { text-decoration: underline; color: var(--text); }
.site-footer .todo { text-transform: none; letter-spacing: 0; }

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- About ---------- */
.about-portrait { width: 100%; max-width: 24rem; height: auto; border-radius: var(--radius); margin-bottom: 2rem; }
.prose .cta { text-decoration: none; }
.about-grid { display: grid; gap: 2rem clamp(2.5rem, 6vw, 6rem); align-items: start; }
@media (min-width: 52rem) {
  .about-grid { grid-template-columns: minmax(0, 24rem) minmax(0, 36rem); }
  .about-grid .about-portrait { margin-bottom: 0; }
}
.about-text > p:first-child { font: 400 clamp(1.5rem, 2.4vw, 2rem)/1.25 var(--font-serif); }
.prose:has(.about-grid) { max-width: none; }
.about-grid > p:first-child { margin: 0; }

/* Compact list (e.g. festivals & awards): set highlights_style: list */
.award-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.award-list li { padding-block: 0.8rem; border-bottom: 1px solid var(--line); }
.framework__step h3 + p { color: var(--muted); margin: 0; }
.framework__step h3 { font: 400 clamp(1.5rem, 2.4vw, 2rem)/1.15 var(--font-serif); text-transform: none; letter-spacing: 0; margin-bottom: 1rem; }

/* Opening image that opens full size (opening.zoom: true) */
.opening-zoom { position: relative; display: block; }
.opening-zoom__hint {
  position: absolute; right: 0.75rem; bottom: 0.75rem;
  font: 500 0.75rem/1 var(--font-sans); letter-spacing: 0.06em; text-transform: uppercase;
  background: rgb(22 22 22 / 0.8); color: var(--text); padding: 0.55rem 0.75rem; border-radius: 2px;
  opacity: 0.85; transition: opacity .3s var(--ease);
}
.opening-zoom:hover .opening-zoom__hint { opacity: 1; }