:root {
  --bg: #fffbf3;
  --ink: #1a1a1a;
  --muted: #66625a;
  --line: #e6dfd0;
  --accent: #ff5a36;
  --highlight: #ffe27a;
  --radius: 10px;
  --max: 1080px;
  --display: "Archivo Black", "Arial Black", sans-serif;
  --font: "Archivo", system-ui, sans-serif;
  --mono: "Space Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; }
ul, ol { list-style: none; }
::selection { background: var(--highlight); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-block;
  font: 600 1rem var(--font);
  text-decoration: none;
  color: #fff;
  background: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: .7rem 1.3rem;
  transition: background .15s, color .15s;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn--big { font-size: clamp(1rem, 3.4vw, 1.3rem); padding: .9rem 1.6rem; word-break: break-all; }

/* Hero */
.hero { padding-top: clamp(3.5rem, 11vh, 7rem); padding-bottom: 3rem; }
.hero__eyebrow { color: var(--accent); font-weight: 600; margin-bottom: .8rem; }
.hero__title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  line-height: 1;
  letter-spacing: -.03em;
}
.hero__lead { max-width: 640px; margin-top: 1.6rem; font-size: 1.18rem; color: #3a3832; }
.hero__lead--ai { margin-top: 1rem; }
.hero__lead strong { color: var(--ink); background: linear-gradient(transparent 60%, var(--highlight) 60%); }
.hero__cta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 2rem; }
.hero__stats { display: grid; grid-template-columns: repeat(2, minmax(0, 340px)); gap: 2rem; margin-top: 3.5rem; padding-top: 1.6rem; border-top: 1px solid var(--line); }
.hero__stats strong { display: block; font-weight: 700; font-size: 1.05rem; }
.hero__stats > li > span { display: block; color: var(--muted); font-size: .92rem; }
.hero__stats .tags { margin-top: .6rem; }

/* Sections */
.section { padding: 4.5rem 24px; }
.section__head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 2rem; }
.section h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -.02em;
}
.section__sub { margin-top: .4rem; }

/* Filters */
.filters { display: flex; gap: .4rem; flex-wrap: wrap; }
.filter {
  font: 500 .9rem var(--font);
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .3rem .9rem;
  cursor: pointer;
  transition: all .15s;
}
.filter:hover { color: var(--ink); border-color: var(--ink); }
.filter.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.6rem; }
#games .grid { grid-template-columns: repeat(3, 1fr); }
.card--featured { grid-column: 1 / -1; }
#games .card__media { aspect-ratio: 460 / 215; }
#games .card--featured .card__media { aspect-ratio: 1920 / 620; }
.card--featured .card__body { padding: 1.6rem 2rem 2rem; }
.card--featured h3 { font-family: var(--display); font-weight: 400; font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.1; }
.card--featured p { font-size: 1.05rem; }
.card--featured .card__actions { margin-top: .6rem; }
.card {
  min-width: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-3px); border-color: var(--ink); box-shadow: 0 10px 30px rgba(0, 0, 0, .08); }
.card.is-hidden { display: none; }
.card__media { aspect-ratio: 16 / 9; background: #f2ece0; overflow: hidden; }
.card__media picture { display: contents; }
.card__media img, .card__media video { width: 100%; height: 100%; object-fit: cover; }
.card__media--contain img { object-fit: contain; }
.card__media--code { display: flex; align-items: center; padding: 1.2rem 1.4rem; background: var(--ink); }
.card__media--code pre { overflow: hidden; max-width: 100%; font-size: .85rem; line-height: 1.6; white-space: pre; color: #f3efe6; }
.card__media--code .k { color: var(--highlight); }
.card__media--code .c { color: #9a958a; }
.card__body { padding: 1.2rem 1.3rem 1.4rem; display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.card__meta.mono, .timeline__when.mono { font-family: var(--font); }
.card__meta { font-size: .82rem; font-weight: 600; color: var(--accent); }
.card h3 { font-size: 1.2rem; font-weight: 700; line-height: 1.25; }
.card p { color: var(--muted); font-size: .97rem; }
.card__link { margin-top: auto; align-self: flex-start; font-weight: 600; text-decoration: none; }
.card__link:hover { color: var(--accent); }

.tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.tags li { font-size: .78rem; color: var(--muted); background: #f5f0e6; border-radius: 5px; padding: .1rem .5rem; }
.tags--big li { font-size: .92rem; padding: .25rem .65rem; color: var(--ink); }

/* Timeline */
.timeline { border-top: 1px solid var(--line); }
.timeline li { display: grid; grid-template-columns: 180px 1fr; gap: 1.5rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.timeline__when { font-size: .92rem; font-weight: 600; color: var(--muted); }
.timeline li:first-child .timeline__when { color: var(--accent); }
.timeline h3 { font-size: 1.15rem; font-weight: 700; }
.timeline h3 a { text-decoration-color: var(--accent); text-underline-offset: 3px; }
.timeline .muted { font-size: .9rem; margin-bottom: .3rem; }

.subhead { margin: 3rem 0 1rem; font-size: 1.3rem; font-weight: 700; }
.edu { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.2rem; }
.edu__item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem; }
.edu__school { display: flex; align-items: center; gap: .6rem; }
.edu__logo { height: 22px; width: auto; }
.edu__item p.mono { font-family: var(--font); font-size: .88rem; font-weight: 600; color: var(--muted); }
.edu__item h4 { margin: .3rem 0 .2rem; font-size: 1.05rem; }
.edu__item p:last-child { color: var(--muted); }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.skills__group h3 { font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: .8rem; }
.langs { margin-top: 2rem; }

/* Contact */
.contact { text-align: center; }
.contact > p { color: var(--muted); max-width: 520px; margin: .8rem auto 1.8rem; font-size: 1.1rem; }
.contact__actions { display: flex; justify-content: center; align-items: center; gap: .8rem; flex-wrap: wrap; }
.social { display: flex; justify-content: center; gap: 1.6rem; margin-top: 2rem; flex-wrap: wrap; }
.social a { text-decoration: none; font-weight: 500; color: var(--muted); }
.social a:hover { color: var(--accent); }

.footer { border-top: 1px solid var(--line); padding: 1.6rem 0; font-size: .85rem; text-align: center; }
.footer .mono { font-family: var(--font); }


@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* Mobile */
@media (max-width: 760px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .section { padding: 3.5rem 16px; }
  .hero__stats { grid-template-columns: 1fr; gap: 1rem; }
  .grid, #games .grid { grid-template-columns: 1fr; }
  #games .card--featured .card__media { aspect-ratio: 16 / 9; }
  .card--featured .card__body { padding: 1.3rem; }
  .timeline li { grid-template-columns: 1fr; gap: .2rem; }
}

/* Card actions */
.btn--small { padding: .4rem .95rem; font-size: .9rem; }
.card__actions { margin-top: auto; display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.card__actions .card__link { margin-top: 0; }

/* Project detail page */
.project { padding-top: 2rem; }
.back { display: inline-block; font-weight: 600; text-decoration: none; color: var(--muted); margin-bottom: 1.4rem; }
.back:hover { color: var(--accent); }
.project__banner img { width: 100%; aspect-ratio: 1920 / 620; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--line); }
.project__head { padding-top: 2.6rem; }
.project__title { font-family: var(--display); font-weight: 400; font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1.05; letter-spacing: -.02em; }
.facts { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 2.5rem; margin-top: 2rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }
.facts dt { font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.facts dd { font-weight: 600; }
.project__body { padding-top: 4rem; padding-bottom: 5rem; }
.project__body h2 { font-family: var(--display); font-weight: 400; font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 1.6rem; }
.contribs { display: grid; gap: 1.4rem; }
.contrib { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.6rem; }
.contrib h3 { font-size: 1.2rem; margin-bottom: .4rem; }
.contrib p { color: var(--muted); }
.contrib img, .contrib video { width: 100%; border-radius: 8px; margin-top: 1rem; }

@media (max-width: 760px) {
  .facts { grid-template-columns: repeat(2, auto); gap: 1.2rem 2rem; }
  .project__banner img { aspect-ratio: 16 / 9; }
}

/* Interactive arrow field */
.bg-field { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }

/* Student projects: compact card */
.section--minor { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.section--minor .section__head { margin-bottom: 1rem; }
.section--minor h2 { font-family: var(--font); font-weight: 700; font-size: 1.3rem; letter-spacing: 0; }
.card--mosaic { display: grid; grid-template-columns: 300px 1fr; align-items: center; }
.card--mosaic .mosaic { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: repeat(2, 1fr); gap: 2px; height: 100%; min-height: 130px; background: var(--line); }
.mosaic img { width: 100%; height: 100%; object-fit: cover; min-height: 0; transition: opacity .2s; }
.mosaic .mosaic__big { grid-row: 1 / 3; }
.mosaic:hover img { opacity: .9; }
.card--mosaic .card__body { padding: 1rem 1.3rem; gap: .4rem; }
.card--mosaic h3 { font-size: 1.05rem; }
.card--mosaic p { font-size: .92rem; }
.card--mosaic .card__actions { margin-top: .3rem; }
.section--page { padding-top: 1rem; }

@media (max-width: 760px) {
  .card--mosaic { grid-template-columns: 1fr; }
  .card--mosaic .mosaic { height: auto; aspect-ratio: 3 / 1; }
}

/* Engine logos */
.logo { display: inline-block; width: 12px; height: 12px; vertical-align: -1px; margin-right: 5px; fill: currentColor; flex-shrink: 0; }
.tags--big .logo, .card__meta .logo, .facts .logo { width: 14px; height: 14px; vertical-align: -2px; margin-right: 6px; }
.hero__stats strong .logo { width: 16px; height: 16px; vertical-align: -2px; margin-right: 7px; }

/* Toast notification */
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 50;
  transform: translate(-50%, 16px); opacity: 0; pointer-events: none;
  background: var(--ink); color: #fff; font-weight: 600; font-size: .95rem;
  padding: .7rem 1.2rem; border-radius: 8px; box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
  transition: opacity .2s, transform .2s;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

/* About page */
.about { padding-top: 1rem; padding-bottom: 5rem; }
.about > * { max-width: 680px; }
.about .project__title { margin-bottom: 1.8rem; }
.about p { font-size: 1.12rem; color: #3a3832; margin-bottom: 1.2rem; }
.footer__link { color: inherit; text-decoration: none; }
.footer__link:hover { color: var(--accent); }

/* Project screenshots */
.shot { margin: 1rem 0 0; }
.shot img { width: 100%; display: block; border-radius: 8px; border: 1px solid var(--line); }
.contrib .shot img { margin-top: 0; }
.shot figcaption { font-size: .82rem; color: var(--muted); margin-top: .4rem; }
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 760px) { .shots { grid-template-columns: 1fr; } }
.shots--feature { grid-template-columns: 2fr 1fr; align-items: start; margin-top: 1rem; }
.shots--feature .shot { margin-top: 0; }
.shots--feature .shots { grid-template-columns: 1fr; gap: .8rem; }
@media (max-width: 760px) { .shots--feature { grid-template-columns: 1fr; } .shots--feature .shots { grid-template-columns: 1fr 1fr; } }

/* Timeline diagram */
.tl { background: #fbf8f1; border: 1px solid var(--line); border-radius: 8px; padding: 1rem 1.1rem .8rem; }
.tl__grid { display: grid; grid-template-columns: 140px 1fr; gap: 5px 12px; align-items: center; }
.tl__label { font-size: .78rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tl__track { position: relative; height: 20px; background: repeating-linear-gradient(90deg, transparent 0 calc(100%/6.13 - 1px), var(--line) calc(100%/6.13 - 1px) calc(100%/6.13)); border-radius: 4px; }
.tl__clip { position: absolute; top: 2px; bottom: 2px; border-radius: 4px; font-size: .68rem; line-height: 16px; padding: 0 5px; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; box-shadow: inset 0 0 0 1px rgba(0,0,0,.08); }
.tl__clip--anim { background: var(--ink); }
.tl__clip--fx { background: var(--accent); }
.tl__clip--au { background: #3a6bff; }
.tl__ticks { position: relative; height: 16px; font-size: .68rem; color: var(--muted); }
.tl__ticks span { position: absolute; transform: translateX(-50%); }
.tl__ticks span:first-child { transform: none; }
.tl figcaption { margin-top: .7rem; }
@media (max-width: 760px) { .tl__grid { grid-template-columns: 96px 1fr; } .tl__clip { font-size: 0; } }
.shots--tool { grid-template-columns: 1fr 2fr; align-items: start; margin-top: 1rem; }
.shots--tool .shot { margin-top: 0; }
.shots--tool .tl__grid { grid-template-columns: 112px 1fr; }
@media (max-width: 760px) { .shots--tool { grid-template-columns: 1fr; } }

/* Pipeline flow */
.contrib code { font-family: var(--mono); font-size: .88em; background: #f5f0e6; padding: 0 .3em; border-radius: 4px; }
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; margin: 1.2rem 0 1rem; counter-reset: step; }
.flow li { position: relative; background: #fbf8f1; border: 1px solid var(--line); border-radius: 8px; padding: .7rem .9rem; }
.flow li strong { display: block; font-size: .95rem; }
.flow li span { font-size: .8rem; color: var(--muted); }
.flow li:not(:last-child)::after { content: "→"; position: absolute; right: -1.25rem; top: 50%; transform: translateY(-50%); color: var(--accent); font-weight: 700; }
@media (max-width: 760px) { .flow { grid-template-columns: 1fr 1fr; } .flow li:nth-child(2)::after { display: none; } }
.shot img.ramps { image-rendering: auto; aspect-ratio: 512 / 160; object-fit: fill; background: #fff; }
.shots--grid2 { grid-template-columns: 1fr 1fr; margin-top: 1rem; }
.shots--grid2 .shot { margin-top: 0; }
@media (max-width: 760px) { .shots--grid2 { grid-template-columns: 1fr 1fr; gap: .6rem; } }

/* More bits */
.bits__title { margin-top: 3rem; }
.callout { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 1.1rem 1.4rem; margin-bottom: 1.6rem; }
.callout__label { font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: .3rem; }
.agents { margin-top: 1rem; padding: .8rem 1rem; background: #fbf8f1; border: 1px solid var(--line); border-radius: 8px; font-size: .92rem; }
.agents strong { display: block; font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: .2rem; }
.bits__agent::before { content: "With coding agents: "; font-weight: 600; color: var(--accent); }
.bits { list-style: none; border-top: 1px solid var(--line); }
.bits li { display: grid; grid-template-columns: 220px 1fr; column-gap: 2rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.bits strong { grid-row: span 2; font-size: 1.05rem; }
.bits span { color: var(--ink); line-height: 1.55; }
.bits__agent { margin-top: .45rem; color: var(--muted); font-size: .9rem; line-height: 1.5; }
@media (max-width: 760px) { .bits li { grid-template-columns: 1fr; } .bits strong { grid-row: auto; margin-bottom: .3rem; } }