.spotlight {
  --spot-x: 50%;
  --spot-y: 0%;
  position: relative;
  isolation: isolate;
}

.spotlight::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: radial-gradient(var(--spot-size) circle at var(--spot-x) var(--spot-y), var(--spot-color), transparent 70%);
  opacity: 0;
  transition: opacity 320ms var(--ease-out);
}

@media (hover: hover) {
  .spotlight:hover::before {
    opacity: 1;
  }
}