:root {
  --ink: #f4f3ee;
}

@property --turn {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  font-family: "Futura", "Futura PT", "Century Gothic", sans-serif;
  background: radial-gradient(115% 85% at 50% 15%, #242383 0%, #141050 45%, #07061e 100%);
  color: var(--ink);
}

.page {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 30px 46px;
}

.topbar__label {
  min-width: 0;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(244, 243, 238, 0.78);
}

.topbar__word {
  cursor: pointer;
  transition: color 0.3s ease;
}

.topbar__word:hover {
  color: var(--ink);
}

/* ---------- hero ---------- */

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 24px 48px;
  gap: 18px;
}

.hero__title {
  margin: 0;
  width: 100%;
  max-width: 100%;
  font-weight: 800;
  font-size: clamp(32px, 6.6vw, 78px);
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.hero__subtitle {
  margin: 0;
  font-weight: 500;
  font-size: 19px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(244, 243, 238, 0.75);
}

/* ---------- cans ---------- */

.cans {
  --can-h: clamp(240px, 32vw, 372px);
  --can-w: calc(var(--can-h) * 0.7467);

  /* lazy-susan turntable: each can sits at --base-angle degrees on a disc;
     turning the disc 180deg (--turn 0 -> 1) swaps the two slots without the
     cans crossing through each other. */
  --rx: calc(var(--can-w) * 0.62);
  --y-mid: calc(var(--can-h) * 0.05);
  --y-amp: calc(var(--can-h) * 0.09);
  --scale-mid: 0.98;
  --scale-amp: 0.14;
  --turn: 0;

  position: relative;
  width: calc(var(--can-w) + var(--rx) * 2);
  height: calc(var(--can-h) + var(--y-amp) * 2);
  margin: 12px 0;
  transition: --turn 0.9s cubic-bezier(0.45, 0, 0.15, 1);
}

.cans::before {
  content: "";
  position: absolute;
  inset: -22%;
  z-index: 0;
  background: radial-gradient(
    closest-side,
    rgba(210, 210, 255, 0.6),
    rgba(140, 140, 255, 0.24) 55%,
    rgba(140, 140, 255, 0) 80%
  );
  filter: blur(20px);
  pointer-events: none;
}

.cans__can {
  --angle: calc(var(--base-angle) + var(--turn) * 180deg);

  position: absolute;
  top: 0;
  left: 0;
  height: var(--can-h);
  width: auto;
  transform-origin: 50% 100%;
  /* x is mirrored (rx - sin, not rx + sin) so increasing --turn always spins
     the disc clockwise, whichever direction a swap is heading. */
  transform: translate(
      calc(var(--rx) - sin(var(--angle)) * var(--rx)),
      calc(var(--y-mid) + cos(var(--angle)) * var(--y-amp))
    )
    scale(calc(var(--scale-mid) + cos(var(--angle)) * var(--scale-amp)));
  filter: brightness(calc(0.76 + cos(var(--angle)) * 0.24))
    blur(calc((1 - cos(var(--angle))) * 1px));
  /* z-index is derived straight from this can's own current depth (front
     half of the disc vs. back half), so whichever can is actually nearer is
     always on top -- no timed guess to fall out of sync and glitch. */
  z-index: calc(round(1.5 + sign(cos(var(--angle))) * 0.5));
}

.cans__can--sparkling {
  --base-angle: 135deg;
}

.cans__can--still {
  --base-angle: -45deg;
}

/* ---------- button ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 100%;
  padding: 12px 22px;
  border: 1px solid rgba(244, 243, 238, 0.4);
  border-radius: 999px;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  text-align: center;
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.btn:hover {
  background: rgba(224, 179, 96, 0.16);
  border-color: rgba(224, 179, 96, 0.85);
  color: #e8c884;
}

.btn__mark {
  font-size: 22px;
  line-height: 1;
}

/* ---------- footer ---------- */

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 24px 24px 30px;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244, 243, 238, 0.55);
}

.footer__dot {
  color: rgba(244, 243, 238, 0.3);
}

/* ---------- label ---------- */

.label {
  position: absolute;
  left: 46px;
  bottom: 28px;
  max-width: 260px;
  font-size: 11px;
  line-height: 1.55;
  letter-spacing: 0.04em;
  color: rgba(244, 243, 238, 0.5);
  pointer-events: none;
  user-select: none;
}

.label__line {
  margin: 0 0 6px;
}

.label__rule {
  border: none;
  border-top: 1px solid rgba(244, 243, 238, 0.22);
  margin: 8px 0;
  width: 44px;
}

.label__caption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 4px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(244, 243, 238, 0.68);
}

.label__caption span:last-child {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0.02em;
  color: rgba(244, 243, 238, 0.45);
}

.label__table {
  border-collapse: collapse;
  width: 100%;
}

.label__table td {
  padding: 1px 10px 1px 0;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.label__table td:first-child {
  color: rgba(244, 243, 238, 0.55);
}

.label__table td:last-child {
  text-align: right;
  padding-right: 0;
  color: rgba(244, 243, 238, 0.72);
}

.label__table tr:first-child td {
  color: rgba(244, 243, 238, 0.82);
  font-weight: 600;
}

/* ---------- mobile ---------- */

@media (max-width: 720px) {
  .topbar {
    padding: 22px 20px;
  }

  .topbar__label {
    font-size: 9px;
    letter-spacing: 0.16em;
  }

  .hero {
    padding: 24px 20px 40px;
    gap: 14px;
  }

  .hero__subtitle {
    font-size: 15px;
    letter-spacing: 0.28em;
  }

  .cans {
    --can-h: 55vw;
  }

  .btn {
    gap: 8px;
    padding: 11px 18px;
    font-size: 10.5px;
    letter-spacing: 0.12em;
  }

  .btn__mark {
    font-size: 18px;
  }

  .footer {
    padding: 18px 20px 24px;
    gap: 8px;
    font-size: 9px;
    letter-spacing: 0.14em;
  }

  .label {
    position: static;
    max-width: none;
    margin: 4px auto 24px;
    padding: 0 20px;
    text-align: center;
  }

  .label__rule {
    margin: 8px auto;
  }

  .label__table {
    margin: 0 auto;
  }
}