* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --index: calc(1vw + 1vh);
  --transition: cubic-bezier(0.1, 0.7, 0, 1);
}
body {
  background-color: #141414;
}
.wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.items {
  display: flex;
  gap: 0.4rem;
  perspective: calc(var(--index) * 35);
}
.item {
  display: flex;
  justify-content: center;
  align-items: end;
  background-color: #222;
  width: calc(var(--index) * 3);
  height: calc(var(--index) * 12);
  background-size: cover;
  background-position: center;
  cursor: pointer;
  transition: transform 1.25s var(--transition), filter 3s var(--transition),
    width 1.25s var(--transition);
  will-change: transform, filter;
  filter: grayscale() brightness(0.5);
}

.item .btn {
  text-decoration: none;
  color: aliceblue;
  opacity: 0;
  padding: 5px 20px;
  font-size: 0.5rem;
  border-radius: 10em;
  background-color: rgba(0, 0, 0, 0.5);
  border: 1px solid aliceblue;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  margin-bottom: 1vh;
}
.item::before,
.item::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 100%;
  right: calc(var(--index) * -1);
}
.item::after {
  left: calc(var(--index) * -1);
}
.items .item:hover {
  transform: translateZ(calc(var(--index) * 10));
  filter: inherit;
}

/* Right */

.items .item:hover + * {
  transform: translateZ(calc(var(--index) * 8.5)) rotateY(35deg);
  filter: inherit;
  z-index: -1;
}
.items .item:hover + * + * {
  transform: translateZ(calc(var(--index) * 5.6)) rotateY(40deg);
  filter: inherit;
  z-index: -2;
}
.items .item:hover + * + * + * {
  transform: translateZ(calc(var(--index) * 2.4)) rotateY(30deg);
  filter: inherit;
  z-index: -3;
}
.items .item:hover + * + * + * + * {
  transform: translateZ(calc(var(--index) * 0.6)) rotateY(14deg);
  filter: inherit;
  z-index: -4;
}

/* Left */

.item:has(+ :hover) {
  transform: translateZ(calc(var(--index) * 8.5)) rotateY(-35deg);
  filter: inherit;
}
.item:has(+ * + :hover) {
  transform: translateZ(calc(var(--index) * 5.6)) rotateY(-40deg);
  filter: inherit;
}
.item:has(+ * + * + :hover) {
  transform: translateZ(calc(var(--index) * 2.4)) rotateY(-30deg);
  filter: inherit;
}
.item:has(+ * + * + * + :hover) {
  transform: translateZ(calc(var(--index) * 0.6)) rotateY(-14deg);
  filter: inherit;
}

.items .item:active,
.items .item:focus {
  width: 28vw;
  transform: translateZ(calc(var(--index) * 10));
  filter: inherit;
  z-index: 100;
  margin: 0 0.45vw;
}

.items .item:active,
.items .item:focus .btn {
  opacity: 1;
}