:root {
  --bg: #e9e9e7;
  --paper: #f3f3f1;
  --ink: #1d1d1d;
  --muted: #6c6c6a;
  --line: #bdbdba;
  --accent: #ff4f1f;
  --sans: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --gutter: clamp(16px, 3vw, 32px);
  --card-w: clamp(15rem, 68vw, 21rem);
  --gap: clamp(12px, 3vw, 24px);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141414;
    --paper: #1c1c1c;
    --ink: #ececea;
    --muted: #8d8d8a;
    --line: #3a3a38;
  }
  :root:not([data-theme="light"]) .card-media img { filter: invert(1); }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--gutter) + env(safe-area-inset-top)) var(--gutter) 40px;
}

/* ---------- Hero ---------- */

.grid-marks { position: relative; }
.grid-marks::before,
.grid-marks::after {
  --plus: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M6 0v12M0 6h12' stroke='%23000' stroke-width='1.3'/%3E%3C/svg%3E");
  content: "";
  position: absolute;
  left: -6px; right: -6px;
  height: 12px;
  background: var(--ink);
  -webkit-mask: var(--plus) left / 12px no-repeat, var(--plus) center / 12px no-repeat, var(--plus) right / 12px no-repeat;
          mask: var(--plus) left / 12px no-repeat, var(--plus) center / 12px no-repeat, var(--plus) right / 12px no-repeat;
  pointer-events: none;
}
.grid-marks::before { top: -6px; }
.grid-marks::after  { bottom: -6px; }

.hero { padding: 18px 0 22px; }

.title {
  margin: 0;
  font-weight: 500;
  font-size: clamp(3.75rem, 15vw, 11rem);
  line-height: .9;
  letter-spacing: -.065em;
}
.title-line { display: block; }
.title-line--right { text-align: right; padding-right: .04em; }

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 14px;
}
.badge {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border: 1.2px solid var(--ink);
  border-radius: 50%;
  font: 400 12px var(--mono);
}
.pixel {
  font-family: "Silkscreen", var(--mono);
  font-size: clamp(2.5rem, 9vw, 5rem);
  line-height: 1;
  margin-left: 10px;
  letter-spacing: -.02em;
}

.lead::before { display: none; } /* shares the hero's bottom marks */
.lead {
  margin: 0;
  padding: 26px 0;
  font-size: clamp(1.5rem, 4.4vw, 2.6rem);
  line-height: 1.02;
  letter-spacing: -.045em;
  font-weight: 500;
}

/* ---------- Section ---------- */

.projects { margin-top: 64px; }

.section-head {
  display: flex;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink);
  font: 400 15px var(--mono);
  text-transform: uppercase;
}
.counter b { font-weight: 500; }

.frame {
  margin-top: 24px;
  border: 1.5px solid var(--ink);
  padding: 6px;
}
.frame-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 4px 8px;
  font: 400 12px var(--mono);
  letter-spacing: .04em;
}
.nav-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 400 16px var(--mono);
  width: 36px; height: 28px;
  cursor: pointer;
  border-radius: 2px;
}
.nav-btn:hover { background: var(--line); }
.nav-btn:disabled { opacity: .3; cursor: default; background: transparent; }

/* ---------- Track ---------- */

.track {
  position: relative;
  display: flex;
  gap: var(--gap);
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 28px calc(50% - var(--card-w) / 2) 32px;
  border: 1px solid var(--ink);
  background:
    radial-gradient(circle, var(--line) 1.1px, transparent 1.3px) 0 0 / 22px 22px,
    var(--bg);
  cursor: grab;
  outline: none;
  touch-action: pan-x pan-y;
}
.track::-webkit-scrollbar { display: none; }
.track:focus-visible { box-shadow: inset 0 0 0 2px var(--accent); }
.track.is-dragging { cursor: grabbing; scroll-snap-type: none; }
.track.is-dragging .card { pointer-events: none; }

.card {
  --k: 0; /* 0 = centered, 1 = neighbour */
  position: relative;
  flex: 0 0 var(--card-w);
  aspect-ratio: 3 / 4;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  color: var(--ink);
  text-decoration: none;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  transform: scale(.9);
  transform-origin: 50% 50%;
  will-change: transform;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}
.card::after { /* dims the cards that are not in focus */
  content: "";
  position: absolute; inset: 0;
  background: var(--bg);
  opacity: calc(var(--k) * .55);
  pointer-events: none;
  z-index: 3;
}
.card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.card-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  transform: translate3d(var(--mx, 0px), var(--my, 0px), 0);
  transition: transform .6s cubic-bezier(.2, .7, .2, 1);
}
.card-media img {
  position: absolute;
  top: -6%;
  left: -22%;
  width: 144%;
  height: 112%;
  object-fit: cover;
  will-change: transform;
  pointer-events: none;
}

.card-tag {
  position: absolute;
  top: 10px; left: 0; right: 0;
  text-align: center;
  font: 400 12px var(--mono);
  z-index: 1;
}

.card-body {
  position: relative;
  z-index: 1;
  margin: 10px;
  padding: 14px 14px 12px;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 3px;
}
.card-body h2 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -.05em;
  line-height: 1;
}
.card-body p {
  margin: 6px 0 12px;
  font: 400 12.5px/1.45 var(--mono);
  color: var(--muted);
}
.card-cta {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 6px 10px;
  background: var(--ink);
  color: var(--bg);
  font: 500 12px var(--mono);
  text-transform: uppercase;
  border-radius: 2px;
}
.card-cta i { font-style: normal; transition: transform .25s; }
.card.is-active:hover .card-cta i { transform: translate(2px, -2px); }

/* ---------- Timeline ---------- */

.timeline { padding: 18px 10px 8px; }
.timeline-rail {
  position: relative;
  height: 1px;
  background: var(--line);
  margin: 0 calc(50% / var(--n, 6));
}
.timeline-fill {
  position: absolute; inset: 0;
  background: var(--ink);
  transform-origin: 0 50%;
  transform: scaleX(var(--progress, 0));
}
.timeline-ticks {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(var(--n, 6), 1fr);
  margin: -5px 0 0;
  padding: 0;
}
.timeline-ticks button {
  appearance: none;
  border: 0;
  background: none;
  padding: 0 0 4px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font: 400 11px var(--mono);
  cursor: pointer;
}
.timeline-ticks button::before {
  content: "";
  width: 9px; height: 9px;
  background: var(--bg);
  border: 1px solid var(--ink);
  border-radius: 50%;
  transition: background .2s, transform .2s;
}
.timeline-ticks .is-active button { color: var(--ink); }
.timeline-ticks .is-active button::before { background: var(--accent); border-color: var(--accent); transform: scale(1.35); }

.hint {
  margin: 14px 0 0;
  text-align: center;
  font: 400 11px var(--mono);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

@media (max-width: 560px) {
  .timeline-ticks button { font-size: 0; gap: 0; }
  .timeline-ticks .is-active button { font-size: 10px; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .card-media, .card-cta i { transition: none; }
}