.page-transition-layer {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  overflow: hidden;
}

.page-transition-layer .transition-panel {
  position: absolute;
  inset: -2px 0;
  transform: translateY(100%);
  background: var(--black, #050505);
  box-shadow: 0 -1px 0 var(#050505), 0 -16px 40px rgba(0, 0, 0, 0.42);
}

.page-transition-layer .transition-panel:nth-child(2n) {
  background: var(--white, #050505);
  box-shadow: 0 -1px 0 var(--black, #050505), 0 -16px 40px rgba(0, 0, 0, 0.34);
}

.page-transition-layer .transition-panel:nth-child(1) {
  z-index: 4;
}

.page-transition-layer .transition-panel:nth-child(2) {
  z-index: 3;
}

.page-transition-layer .transition-panel:nth-child(3) {
  z-index: 2;
}

.page-transition-layer .transition-panel:nth-child(4) {
  z-index: 1;
}

.page-transition-layer.is-leaving .transition-panel {
  animation: page-panel-leave 520ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.page-transition-layer.is-leaving .transition-panel:nth-child(2) {
  animation-delay: 60ms;
}

.page-transition-layer.is-leaving .transition-panel:nth-child(3) {
  animation-delay: 120ms;
}

.page-transition-layer.is-leaving .transition-panel:nth-child(4) {
  animation-delay: 180ms;
}

.page-transition-layer.is-entering .transition-panel {
  transform: translateY(0);
  animation: page-panel-enter 520ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.page-transition-layer.is-entering .transition-panel:nth-child(1) {
  animation-delay: 180ms;
}

.page-transition-layer.is-entering .transition-panel:nth-child(2) {
  animation-delay: 120ms;
}

.page-transition-layer.is-entering .transition-panel:nth-child(3) {
  animation-delay: 60ms;
}


body > :not(.page-transition-layer) {
  animation: page-content-enter 620ms 120ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes page-panel-enter {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-100%);
  }
}

@keyframes page-panel-leave {
  0% {
    transform: translateY(100%);
  }
  100% {
    transform: translateY(0);
  }
}

@keyframes page-content-enter {
  0% {
    opacity: 0;
    transform: translateY(18px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-transition-layer,
  .page-transition-layer .transition-panel,
  body > :not(.page-transition-layer) {
    animation: none;
  }

  .page-transition-layer {
    display: none;
  }
}