/* ── Base ── */
.layered-slider {
  position: relative;
  width: 100%;
  height: clamp(400px, 620px, 680px);
}

.layered-slider__slides {
  display: none;
}

/* ── Layer stage ── */
.layered-slider__stage {
  position: relative;
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.layered-slider__layer {
  position: absolute;
  overflow: hidden;
}

.layered-slider__layer img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Layer: upcoming ── */
.layered-slider__layer--upcoming {
  width: 212px;
  height: 495px;
  left: 0%;
  z-index: 1;
  opacity: 0;
  transform: scale(0.85);
  transition: none;
}

/* ── Layer: back — 212×495 ── */
.layered-slider__layer--back {
  width: 212px;
  height: 495px;
  left: 0%;
  z-index: 10;
  transition: none;
}

/* ── Layer: front — 268×625 ── */
.layered-slider__layer--front {
  width: 268px;
  height: 628px;
  left: 38%;
  z-index: 30;
  opacity: 1;
  transform: scale(1);
  transition: none;
}

/* ── Transitioning states ── */
.layered-slider__stage.is-transitioning .layered-slider__layer--upcoming {
  opacity: 1;
  transform: scale(1);
  transition:
    opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.layered-slider__stage.is-transitioning .layered-slider__layer--back {
  width: 268px;
  height: 625px;
  left: 38%;
  z-index: 20;
  transition:
    width 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    height 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    left 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.layered-slider__stage.is-transitioning .layered-slider__layer--front {
  z-index: 5;
  opacity: 0;
  transform: scale(0.95);
  transition:
    opacity 0.4s 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    /* 0.3s delay — back is in position first */ transform 0.7s
      cubic-bezier(0.4, 0, 0.2, 1); /* match back movement duration */
}