.checkout-page {
  padding: 26px 0 42px;
}

.checkout-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 390px);
  gap: 26px;
  align-items: start;
}

.checkout-shell,
.checkout-summary-card {
  display: grid;
  gap: 20px;
}

.checkout-card,
.checkout-summary-card {
  padding: 24px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(223, 230, 235, 0.92);
  box-shadow: var(--shadow-sm);
}

.page-heading {
  margin-bottom: 2px;
}

.page-heading h1 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.page-heading p {
  color: var(--color-text-soft);
}

.checkout-card h2,
.checkout-summary-card h2 {
  margin-bottom: 16px;
  font-size: 1.7rem;
}

.checkout-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.checkout-card__head h2 {
  margin-bottom: 0;
}

.checkout-address-select {
  margin-bottom: 18px;
  position: relative;
}

.checkout-address-select select {
  width: 100%;
  min-height: 54px;
  padding: 0 46px 0 18px;
  border: 1px solid rgba(223, 230, 235, 0.96);
  border-radius: 18px;
  background: rgba(248, 250, 252, 0.94);
  color: var(--color-text);
  font: inherit;
  font-weight: 800;
  appearance: none;
}

.checkout-address-select::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 20px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg);
  pointer-events: none;
}

.checkout-card__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 18px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(248, 250, 252, 0.92);
  border: 1px solid rgba(223, 230, 235, 0.85);
}

.checkout-card__grid span {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-soft);
  font-weight: 700;
}

.checkout-card__grid strong {
  line-height: 1.5;
}

.checkout-card__full {
  grid-column: 1 / -1;
}

.checkout-address-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(223, 230, 235, 0.9);
}

.checkout-address-form[hidden] {
  display: none;
}

.checkout-address-form textarea {
  resize: vertical;
}

.payment-options {
  display: grid;
  gap: 12px;
}

.payment-option {
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: 18px;
  background: rgba(248, 250, 252, 0.94);
  border: 1px solid rgba(223, 230, 235, 0.92);
  font-weight: 700;
}

.payment-option input {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
}

.payment-option.is-selected {
  border-color: rgba(17, 132, 77, 0.32);
  background: rgba(234, 247, 240, 0.92);
}

.payment-form {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.payment-form [hidden] {
  display: none;
}

.checkout-items {
  display: grid;
  gap: 12px;
}

.checkout-item {
  padding: 14px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid rgba(223, 230, 235, 0.92);
}

.checkout-item__meta {
  display: grid;
  gap: 4px;
}

.checkout-item__meta span {
  color: var(--color-text-soft);
}

.checkout-item__price {
  font-weight: 800;
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(223, 230, 235, 0.9);
}

.summary-row--total {
  padding-top: 16px;
  font-size: 1.1rem;
}

@media (max-width: 1040px) {
  .checkout-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .checkout-card__head {
    align-items: stretch;
    flex-direction: column;
  }

  .checkout-card__grid,
  .checkout-address-form,
  .payment-form {
    grid-template-columns: 1fr;
  }

  .checkout-card,
  .checkout-summary-card {
    padding: 18px;
    border-radius: 22px;
  }

  .checkout-item,
  .summary-row {
    align-items: flex-start;
    flex-direction: column;
  }
}