.checkout-shell {
  position: relative;
}

.checkout-loader {
  position: absolute;
  z-index: 1;
  top: clamp(8rem, 28vh, 16rem);
  left: 50%;
  display: grid;
  width: min(90%, 22rem);
  justify-items: center;
  gap: 1rem;
  transform: translateX(-50%);
  color: #555;
  font: 600 1rem/1.4 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-align: center;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.checkout-loader::before {
  width: 2.5rem;
  height: 2.5rem;
  border: 4px solid #d9d9d9;
  border-top-color: #58bfd0;
  border-radius: 50%;
  content: "";
  animation: checkout-loader-spin 750ms linear infinite;
}

.checkout-loader.is-complete {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

@keyframes checkout-loader-spin {
  to {
    transform: rotate(1turn);
  }
}

@media (prefers-reduced-motion: reduce) {
  .checkout-loader::before {
    animation-duration: 1.5s;
  }
}