body.payment-popup-active {
  overflow: hidden;
}

.payment-popup-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(16, 24, 21, .58);
}

.payment-popup-dialog {
  width: min(480px, 100%);
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 16px;
  padding: 24px;
  border: 1px solid rgba(16, 38, 31, .12);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 20px 60px rgba(8, 22, 17, .24);
}

.payment-popup-dialog h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  letter-spacing: 0;
}

.payment-popup-dialog p {
  margin: 0;
  color: #53625d;
  line-height: 1.55;
}

.payment-popup-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #dce5e1;
  border-top-color: #16784b;
  border-radius: 50%;
  animation: payment-popup-spin .8s linear infinite;
}

.payment-popup-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

.payment-popup-actions .button {
  max-width: 100%;
}

.payment-checkout-page {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: #f4f6f5;
}

.payment-checkout-page > section {
  width: min(480px, 100%);
  padding: 28px;
  border: 1px solid rgba(16, 38, 31, .12);
  border-radius: 8px;
  background: #fff;
  text-align: center;
}

.payment-checkout-page .payment-popup-spinner {
  margin-inline: auto;
}

.payment-checkout-page .button {
  margin-top: 18px;
}

.payment-checkout-page h1 {
  margin: 14px 0 8px;
  font-size: 1.35rem;
  letter-spacing: 0;
}

.payment-checkout-page p {
  margin: 0;
  color: #53625d;
}

@keyframes payment-popup-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 480px) {
  .payment-popup-overlay { align-items: end; padding: 12px; }
  .payment-popup-dialog { grid-template-columns: 32px minmax(0, 1fr); padding: 20px; }
  .payment-popup-actions { display: grid; grid-template-columns: 1fr; }
  .payment-popup-actions .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .payment-popup-spinner { animation-duration: 1.8s; }
}