.checkout-mode {
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 14px;
  margin-top: 16px;
  background: #f8fafc;
}

.checkout-mode p {
  margin: 0 0 10px;
  color: #101820;
  font-weight: 800;
}

.checkout-mode label {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 38px;
  color: #475569;
  font-size: 13px;
  font-weight: 700;
}

.checkout-mode input {
  accent-color: #009688;
}

.promo-box {
  margin-top: 14px;
  border: 1px solid #d8e9e6;
  border-radius: 16px;
  background: #f2fbf9;
  padding: 14px;
}

.promo-box p {
  margin: 0 0 10px;
  color: #101820;
  font-weight: 800;
}

.promo-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 38px;
  gap: 8px;
}

.promo-row input,
.promo-row button {
  min-height: 42px;
  border: 1px solid #d8e1e8;
  border-radius: 12px;
  font: inherit;
}

.promo-row input {
  width: 100%;
  padding: 0 12px;
  background: #fff;
  color: #101820;
  outline: none;
  text-transform: uppercase;
}

.promo-row button {
  padding: 0 12px;
  background: #009688;
  color: #fff;
  font-weight: 900;
  cursor: pointer;
}

.promo-row button:disabled {
  opacity: .65;
  cursor: wait;
}

#clearPromoBtn {
  display: grid;
  place-items: center;
  padding: 0;
  background: #101820;
}

.promo-feedback {
  min-height: 20px;
  margin-top: 9px;
  color: #64748b;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.45;
}

.promo-feedback.success { color: #056b62; }
.promo-feedback.error { color: #991b1b; }

@media (max-width: 420px) {
  .promo-row {
    grid-template-columns: 1fr 42px;
  }

  .promo-row input {
    grid-column: 1 / -1;
  }
}