.checkout-shell {
  display: grid;
  gap: var(--space-6);
}

.checkout-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.checkout-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: minmax(0, 1.6fr) minmax(300px, 0.9fr);
  align-items: start;
}

.checkout-panel {
  border: 1px solid var(--border);
  background: #ffffff;
  padding: var(--space-4);
}

.checkout-panel--summary {
  position: sticky;
  top: calc(var(--header-offset) + var(--space-4));
  display: grid;
  gap: var(--space-3);
}

.checkout-panel__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.checkout-panel h2,
.checkout-ingredients h3 {
  margin: 0;
}

.checkout-subtle {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.checkout-items {
  display: grid;
  gap: var(--space-3);
}

.checkout-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  background: #ffffff;
  padding: var(--space-3);
}

.checkout-item__image {
  width: 92px;
  height: 92px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.checkout-item__title {
  margin: 0 0 4px;
  font-size: 1rem;
  line-height: 1.25;
}

.checkout-item__meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.checkout-item__servings {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: 4px;
}

.checkout-item__servings-label {
  font-weight: 600;
  font-size: 0.9rem;
}

.checkout-item__servings-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.checkout-item__servings-btn {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}

.checkout-item__servings-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.checkout-item__servings-btn:not(:disabled):hover,
.checkout-item__servings-btn:not(:disabled):focus-visible {
  border-color: var(--text);
  background: var(--highlight);
}

.checkout-item__servings-value {
  min-width: 20px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.checkout-item__actions {
  display: grid;
  gap: 8px;
  justify-items: end;
}

.checkout-item__remove {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  padding: 7px 10px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.checkout-item__remove:hover,
.checkout-item__remove:focus-visible {
  border-color: var(--text);
  background: var(--highlight);
}

.checkout-item__open {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.checkout-empty {
  border: 1px dashed var(--border);
  padding: var(--space-4);
  justify-items: start;
  gap: var(--space-3);
  display: none;
}

.checkout-empty p {
  margin: 0;
  color: var(--muted);
}

[data-checkout-root][data-checkout-state="empty"] .checkout-empty {
  display: grid;
}

[data-checkout-root][data-checkout-state="empty"] .checkout-items {
  display: none;
}

[data-checkout-root][data-checkout-state="ready"] .checkout-empty,
[data-checkout-root][data-checkout-state="loading"] .checkout-empty,
[data-checkout-root][data-checkout-state="error"] .checkout-empty {
  display: none;
}

.checkout-disclosure {
  margin: 0;
  line-height: 1.45;
}

.checkout-handoff-status {
  margin: 0;
  min-height: 1.2em;
}

.checkout-panel--summary .btn.instacart-cta {
  width: 100%;
  justify-content: center;
}

.checkout-panel--summary .btn.instacart-cta[aria-disabled="true"] {
  pointer-events: none;
}

.checkout-panel--summary .btn.instacart-cta.is-loading .instacart-cta__logo {
  animation: checkout-spin 0.9s linear infinite;
}

@keyframes checkout-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.checkout-ingredients {
  border-top: 1px solid var(--border);
  padding-top: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.checkout-ingredients ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.checkout-ingredients li {
  font-size: 0.88rem;
  color: var(--muted);
}

@media (max-width: 980px) {
  .checkout-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .checkout-panel--summary {
    position: static;
  }
}

@media (max-width: 680px) {
  .checkout-item {
    grid-template-columns: 1fr;
  }

  .checkout-item__image {
    width: 100%;
    height: 180px;
  }

  .checkout-item__actions {
    justify-items: start;
  }
}