/* Checkout Page Scoped Styles */
.checkout-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px var(--page-gutter) 80px;
  min-height: 80vh;
  box-sizing: border-box;
}

.checkout-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 36px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-line-light);
}

.checkout-page-title {
  font-size: var(--text-page-title, 24px);
  font-weight: 400;
  text-transform: uppercase;
  margin: 0;
  letter-spacing: 0.02em;
}

.checkout-back-link {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink);
  text-decoration: none;
}

.checkout-layout {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 4.5vw;
  align-items: start;
}

/* Form Sections */
.checkout-main {
  min-width: 0;
}

.checkout-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.checkout-section {
  border: 0;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.checkout-section-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-bottom: 8px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--color-line-light);
  width: 100%;
  color: var(--color-ink);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
}

.form-group input,
.form-group select {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--color-line);
  border-radius: 0;
  padding: 8px 0;
  font-size: 13px;
  background: transparent;
  color: inherit;
  font-family: inherit;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
}

.form-group select {
  cursor: pointer;
}

.form-group select option {
  background: var(--color-paper, #fff);
  color: var(--color-ink, #212123);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field-error {
  font-size: 10px;
  color: #b00020;
  margin-top: 2px;
  min-height: 14px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-group.has-error input,
.form-group.has-error select {
  border-bottom-color: #b00020;
}

.checkout-actions {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
}

.checkout-submit-btn {
  width: 100%;
  height: 44px;
  font-size: 12px;
  letter-spacing: 0.05em;
  border-radius: 200px;
  cursor: pointer;
}

.checkout-status {
  margin-top: 14px;
  font-size: 11px;
  text-align: center;
  color: var(--color-ink);
  min-height: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.checkout-footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  margin-top: 16px;
  color: var(--color-muted);
}

.checkout-footer-links a {
  color: var(--color-muted);
}

/* Order Summary */
.checkout-sidebar {
  min-width: 0;
}

.checkout-summary-card {
  background: #fafafa;
  border: 1px solid var(--color-line-light);
  padding: 28px 24px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.checkout-summary-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 380px;
  overflow-y: auto;
  padding-right: 4px;
}

.checkout-item {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  gap: 14px;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid #f0f0f0;
}

.checkout-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.checkout-item-thumb {
  width: 50px;
  height: 67px;
  background: #eee;
  flex-shrink: 0;
  overflow: hidden;
}

.checkout-item-thumb .media-slot,
.checkout-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.checkout-item-details {
  min-width: 0;
}

.checkout-item-name {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  margin: 0 0 2px;
  overflow-wrap: anywhere;
}

.checkout-item-size,
.checkout-item-qty {
  font-size: 11px;
  color: var(--color-muted);
  margin: 0;
  text-transform: uppercase;
}

.checkout-item-price {
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.checkout-summary-totals {
  border-top: 1px solid var(--color-line-light);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.summary-row-muted {
  color: var(--color-muted);
  font-size: 11px;
}

.summary-neutral {
  letter-spacing: 0.02em;
}

.summary-row-total {
  border-top: 1px solid var(--color-ink);
  padding-top: 12px;
  margin-top: 4px;
  font-size: 14px;
  font-weight: 600;
}

.checkout-note {
  font-size: 10px;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Empty Bag State */
.checkout-empty-state {
  text-align: center;
  padding: 120px 20px;
  max-width: 480px;
  margin: 0 auto;
}

.checkout-return-btn {
  margin-top: 24px;
  max-width: 260px;
  margin-left: auto;
  margin-right: auto;
  text-decoration: none;
}

/* Mobile Layout: Responsive Single-Column Flow */
@media (max-width: 900px) {
  .checkout-page {
    padding: 80px 20px 60px;
  }

  .checkout-header-bar {
    margin-bottom: 24px;
    flex-direction: column;
    gap: 8px;
  }

  .checkout-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .checkout-main {
    display: contents;
  }

  .checkout-form {
    display: contents;
  }

  /* Specific mobile sequence per Section 7:
     1. Contact Information
     2. Shipping Address
     3. Order Summary
     4. Continue to Payment
     5. Legal Links
  */
  .checkout-section:nth-of-type(1) {
    order: 1;
    width: 100%;
  }

  .checkout-section:nth-of-type(2) {
    order: 2;
    width: 100%;
  }

  .checkout-sidebar {
    order: 3;
    width: 100%;
  }

  .checkout-actions {
    order: 4;
    width: 100%;
  }

  .checkout-footer-links {
    order: 5;
    width: 100%;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .checkout-summary-card {
    padding: 20px 16px;
  }
}