.toast-viewport {
  position: fixed;
  left: 50%;
  bottom: calc(var(--spacer-24) + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 20000;
  width: min(calc(100% - (var(--spacer-16) * 2)), 420px);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: var(--spacer-16);
  border-radius: var(--spacer-16);
  background: var(--black100);
  color: var(--white100);
  text-align: center;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}