/* Arc carousel for the homepage featured mattresses (featured-arc.js adds
   .is-arc to the shell once cards exist; without JS the flat track remains). */

.featured-mattress-shell.is-arc {
  --arc-card-w: 300px;
  --arc-card-h: 420px;
  --arc-radius: 1500px;
  --arc-step: 11.5deg;
  margin-top: 18px;
}

.featured-mattress-shell.is-arc .featured-mattress-track {
  display: block;
  position: relative;
  height: calc(var(--arc-card-h) + 110px);
  overflow: hidden;
  padding: 0;
  scroll-snap-type: none;
  touch-action: pan-y;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  /* Soft fade at both edges so the ring reads as continuing out of view. */
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%);
}

.featured-mattress-shell.is-arc .featured-mattress-track:active {
  cursor: grabbing;
}

.featured-mattress-shell.is-arc .featured-arc-card {
  position: absolute;
  top: 56px;
  left: 50%;
  width: var(--arc-card-w);
  height: var(--arc-card-h);
  min-height: 0;
  margin: 0;
  transform-origin: 50% var(--arc-radius);
  transform:
    translateX(-50%)
    rotate(calc(var(--arc-offset, 0) * var(--arc-step)));
  z-index: calc(20 - var(--arc-distance, 0));
  opacity: calc(1 - var(--arc-distance, 0) * .14);
  filter: saturate(calc(1 - var(--arc-distance, 0) * .12)) brightness(calc(1 - var(--arc-distance, 0) * .06));
  transition:
    transform .85s cubic-bezier(.22, 1, .36, 1),
    opacity .6s ease,
    filter .6s ease,
    box-shadow .6s ease;
  will-change: transform;
  box-shadow: 0 18px 36px rgba(58, 35, 20, .14);
}

.featured-mattress-shell.is-arc .featured-arc-card.is-arc-active {
  transform:
    translateX(-50%)
    translateY(-22px);
  box-shadow:
    0 0 0 1px rgba(216, 177, 106, .55),
    0 34px 70px rgba(58, 35, 20, .28),
    0 0 60px rgba(216, 177, 106, .22);
}

.featured-mattress-shell.is-arc .featured-arc-card.is-arc-hidden {
  opacity: 0;
  pointer-events: none;
}

.featured-mattress-shell.is-arc .featured-arc-card img {
  min-height: 0;
  height: 100%;
  pointer-events: none;
}

/* Cards are pure product imagery in arc mode; the panel below names the
   focused mattress. */
.featured-mattress-shell.is-arc .featured-arc-card .featured-mattress-card-overlay {
  display: none;
}

.featured-mattress-shell.is-arc .featured-arc-card.is-arc-active img {
  transform: scale(1.04);
}

.featured-mattress-shell.is-arc .featured-mattress-arrow {
  top: calc(56px + var(--arc-card-h) / 2);
}

.featured-mattress-shell.is-arc .featured-mattress-prev { left: 4px; }
.featured-mattress-shell.is-arc .featured-mattress-next { right: 4px; }

/* ---- Focused-mattress panel ---- */
.featured-arc-panel {
  display: grid;
  justify-items: center;
  gap: 10px;
  margin: 0 auto;
  max-width: 560px;
  text-align: center;
}

.featured-arc-title-row {
  display: flex;
  align-items: center;
  gap: 18px;
}

.featured-arc-name {
  margin: 0;
  min-width: 220px;
  font: 400 clamp(26px, 3vw, 36px) / 1.1 Georgia, serif;
  color: var(--ink, #2b1a10);
}

.featured-arc-step {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(177, 132, 66, .4);
  border-radius: 50%;
  background: #fffaf2;
  color: var(--brown, #5a3a22);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}

.featured-arc-step:hover {
  background: #f3e4c6;
  transform: scale(1.06);
}

.featured-arc-meta {
  margin: 0;
  color: var(--muted, #7a6b5b);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.featured-arc-explore {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  padding: 11px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, #e9c98a, #c99a4b);
  color: #2b1a10;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(150, 105, 45, .28);
  transition: transform .2s ease;
}

.featured-arc-explore:hover {
  transform: translateY(-2px);
}

.featured-arc-progress {
  width: 160px;
  height: 3px;
  margin-top: 8px;
  border-radius: 3px;
  background: rgba(177, 132, 66, .18);
  overflow: hidden;
}

.featured-arc-progress span {
  display: block;
  width: var(--arc-progress, 0%);
  height: 100%;
  background: #c99a4b;
  transition: width .6s ease;
}

@media (max-width: 900px) {
  .featured-mattress-shell.is-arc {
    --arc-card-w: 230px;
    --arc-card-h: 320px;
    --arc-radius: 900px;
    --arc-step: 17deg;
  }

  .featured-mattress-shell.is-arc .featured-mattress-track {
    height: calc(var(--arc-card-h) + 90px);
  }

  .featured-mattress-shell.is-arc .featured-arc-card { top: 44px; }


  .featured-arc-name { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .featured-mattress-shell.is-arc .featured-arc-card,
  .featured-mattress-shell.is-arc .featured-arc-card img {
    transition: none;
  }
}