.checkout-grid {
  grid-template-columns: minmax(0, 1.65fr) minmax(300px, 1fr);
  align-items: start;
  gap: 20px;
}

.checkout-panel {
  display: grid;
  gap: 16px;
}

.checkout-form {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  grid-template-areas:
    'header header'
    'summary summary'
    'cart details'
    'footer footer';
  column-gap: 16px;
  row-gap: 16px;
  align-items: start;
}

.checkout-header {
  grid-area: header;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.checkout-subtitle {
  color: var(--muted);
  margin-top: 4px;
}

.checkout-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(47, 111, 109, 0.15);
  color: var(--accent-2);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.25);
    opacity: 1;
  }
}

.checkout-summary {
  grid-area: summary;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.summary-card {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  display: grid;
  gap: 4px;
}

.summary-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-weight: 700;
}

.checkout-block {
  display: grid;
  gap: 12px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.checkout-block--cart {
  grid-area: cart;
}

.checkout-block--details {
  grid-area: details;
}

.block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.block-hint {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.field {
  display: grid;
  gap: 8px;
}

.priority-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.priority-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--ink);
  position: relative;
}

.priority-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-ui {
  width: 40px;
  height: 22px;
  background: rgba(31, 25, 21, 0.2);
  border-radius: 999px;
  position: relative;
  transition: background 0.2s ease;
}

.toggle-ui::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  top: 2px;
  left: 2px;
  transition: transform 0.2s ease;
  box-shadow: var(--shadow-soft);
}

.priority-toggle input:checked + .toggle-ui {
  background: rgba(47, 111, 109, 0.6);
}

.priority-toggle input:checked + .toggle-ui::after {
  transform: translateX(18px);
}

.toggle-hint {
  font-size: 0.75rem;
  color: var(--muted);
}

.cart-list {
  display: grid;
  gap: 12px;
}

.checkout-cart {
  max-height: 390px;
  overflow: auto;
  padding-right: 4px;
}

.checkout-cart::-webkit-scrollbar {
  width: 8px;
}

.checkout-cart::-webkit-scrollbar-thumb {
  background: rgba(120, 108, 98, 0.35);
  border-radius: 999px;
}

.cart-item {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
}

.cart-item-info {
  display: grid;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.cart-item-info span {
  font-size: 0.85rem;
  color: var(--muted);
}

.cart-item-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-left: auto;
}

.qty-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 46px;
  min-height: 42px;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid rgba(58, 48, 42, 0.22);
  padding: 0 10px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(246, 239, 231, 0.84) 100%
  );
  cursor: pointer;
  box-shadow:
    0 8px 14px rgba(51, 40, 34, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.66);
  transition:
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.qty-action:hover {
  border-color: rgba(198, 118, 71, 0.45);
  color: var(--accent);
  transform: translateY(-1px);
  background: linear-gradient(
    145deg,
    rgba(255, 246, 239, 0.98) 0%,
    rgba(247, 220, 200, 0.9) 100%
  );
  box-shadow:
    0 12px 18px rgba(198, 118, 71, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.qty-action:active {
  transform: translateY(0);
  box-shadow:
    0 5px 8px rgba(51, 40, 34, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.54);
}

.qty-action svg {
  width: 12px;
  height: 12px;
  stroke: currentColor;
}

.cart-qty {
  min-width: 24px;
  text-align: center;
  font-weight: 700;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-weight: 700;
}

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

.checkout-footer .primary {
  justify-self: start;
  min-height: 54px;
  padding-inline: 30px;
  border-radius: 20px;
  letter-spacing: 0.12em;
  box-shadow:
    0 8px 16px rgba(198, 118, 71, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    inset 0 -1px 0 rgba(110, 60, 37, 0.24);
}

.checkout-footer .primary::after {
  opacity: 0.42;
}

.checkout-footer .primary:hover {
  transform: translateY(-1px);
  box-shadow:
    0 11px 20px rgba(198, 118, 71, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 -1px 0 rgba(110, 60, 37, 0.28);
}

.checkout-footer .primary:active {
  transform: translateY(0);
  box-shadow:
    0 5px 10px rgba(198, 118, 71, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.34),
    inset 0 -1px 0 rgba(110, 60, 37, 0.2);
}

.checkout-note {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(214, 166, 90, 0.2);
  border: 1px solid rgba(214, 166, 90, 0.4);
  color: var(--ink);
  font-size: 0.85rem;
}

.checkout-aside {
  position: relative;
}

.aside-sticky {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 14px;
}

.checkout-aside .panel-header h2 {
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
}

.checkout-benefits {
  display: grid;
  gap: 10px;
}

.checkout-benefits li {
  display: grid;
  gap: 4px;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.75);
}

.checkout-benefits li strong {
  color: var(--ink);
  font-size: 0.86rem;
}

.checkout-benefits li span {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.checkout-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.checkout-links .primary,
.checkout-links .ghost {
  width: 100%;
}

.checkout-grid > .card,
.checkout-panel,
.cart-item,
.summary-card {
  animation: rise 0.35s ease both;
}

@media (max-width: 1200px) {
  .checkout-form {
    grid-template-columns: 1fr;
    grid-template-areas:
      'header'
      'summary'
      'cart'
      'details'
      'footer';
  }
}

@media (max-width: 1100px) {
  .checkout-grid {
    grid-template-columns: 1fr;
  }

  .aside-sticky {
    position: static;
  }
}

@media (max-width: 900px) {
  .checkout-summary,
  .checkout-links {
    grid-template-columns: 1fr;
  }

  .cart-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .cart-item-actions {
    width: 100%;
    justify-content: flex-start;
    margin-left: 0;
  }
}

@media (max-width: 700px) {
  .checkout-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .priority-row {
    flex-direction: column;
    align-items: flex-start;
  }
}