.cart-notice {
  position: fixed;
  z-index: 80;
  right: 24px;
  bottom: 24px;
  margin: 0;
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  background: #123f37;
  color: #fff;
  box-shadow: 0 12px 30px rgba(14,50,43,.2);
  font-size: .9rem;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity .2s ease, transform .2s ease;
}

.cart-notice::before {
  content: "✓";
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-right: 8px;
  border-radius: 50%;
  background: #a9d45c;
  color: #123f37;
  font-size: .74rem;
}

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

@media (max-width: 720px) {
  .cart-notice {
    right: 16px;
    bottom: 18px;
    max-width: calc(100vw - 32px);
    font-size: .84rem;
  }
}