/* =============================================
   Cart & Checkout Styles
   ============================================= */

/* Cart Page */
.cart-page {
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
}

.item-count {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-left: var(--spacing-md);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-3xl);
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
}

.empty-state-icon {
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

.empty-state h2 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

/* Cart Layout */
.cart-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--spacing-xl);
  align-items: start;
}

.cart-main {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* Cart Actions Bar */
.cart-actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.cart-actions-left {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8125rem;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Cart Table */
.cart-table-wrapper {
  overflow-x: auto;
}

.cart-table {
  width: 100%;
  border-collapse: collapse;
}

.cart-table th {
  text-align: left;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.cart-table td {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.cart-item:last-child td {
  border-bottom: none;
}

/* Product Info in Cart */
.product-info {
  display: flex;
  gap: var(--spacing-md);
}

.product-image {
  width: 60px;
  height: 60px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.product-image img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
}

.product-details {
  min-width: 0;
}

.product-name {
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.product-name:hover {
  color: var(--color-primary);
}

.product-meta {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.product-meta .manufacturer {
  color: var(--color-primary);
  font-weight: 500;
}

.product-meta .part-number {
  margin-left: var(--spacing-sm);
}

.product-sku {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Stock Status */
.stock-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8125rem;
}

.stock-status.in-stock {
  color: var(--color-success);
}
.stock-status.low-stock {
  color: var(--color-warning);
}
.stock-status.out-of-stock {
  color: var(--color-error);
}

/* Quantity Input */
.qty-form {
  display: inline-block;
}

.qty-input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.qty-btn {
  width: 32px;
  height: 36px;
  background: var(--bg-secondary);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.qty-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.qty-input {
  width: 60px;
  height: 36px;
  border: none;
  text-align: center;
  font-size: 0.9375rem;
  font-weight: 500;
  -moz-appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Prices */
.unit-price {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.extended-price {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.9375rem;
}

/* Remove Button */
.remove-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.remove-btn:hover {
  background: #fef2f2;
  color: var(--color-error);
}

/* Cart Reference */
.cart-reference {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.cart-reference label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.cart-reference input {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
}

/* Cart Sidebar */
.cart-sidebar {
  position: sticky;
  top: 100px;
}

.cart-summary {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.cart-summary h3 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  font-size: 0.9375rem;
}

.summary-value {
  font-weight: 500;
}

.summary-value.text-muted {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.8125rem;
}

.summary-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-md) 0;
}

.summary-total {
  font-size: 1.125rem;
  font-weight: 600;
}

.btn-block {
  width: 100%;
  margin-top: var(--spacing-lg);
}

/* Help Box */
.help-box {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
}

.help-box h4 {
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-sm);
}

.help-box p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.help-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 2000;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-xl);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.modal-header h3 {
  font-size: 1.125rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.inline-form {
  display: inline;
}

/* Responsive */
@media (max-width: 1024px) {
  .cart-layout {
    grid-template-columns: 1fr;
  }

  .cart-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .cart-table th,
  .cart-table td {
    padding: var(--spacing-md);
  }

  .col-availability,
  .col-price {
    display: none;
  }
}