/* ===========================
   购物车侧边栏样式 - Demo Style
   =========================== */

.cart-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  visibility: hidden;
  opacity: 0;
  transition: all 0.3s ease;
}

.cart-sidebar.active {
  visibility: visible;
  opacity: 1;
}

.cart-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}

.cart-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 420px;
  height: 100%;
  background: var(--color-white);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
}

.cart-sidebar.active .cart-content {
  transform: translateX(0);
}

/* 购物车头部 */
.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.cart-header h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-black);
  letter-spacing: 0.05em;
}

.cart-header-actions {
  display: flex;
  gap: var(--space-2);
}

.cart-close,
.cart-clear {
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  font-size: 14px;
  color: var(--color-gray-500);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-close:hover {
  background: var(--color-gray-100);
  color: var(--color-black);
}

.cart-clear:hover {
  background: rgba(220, 53, 69, 0.1);
  color: var(--color-error);
}

/* 购物车主体 */
.cart-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-6);
}

/* 空状态 */
.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 300px;
  color: var(--color-gray-400);
  text-align: center;
}

.cart-empty i,
.cart-empty svg {
  font-size: 4rem;
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-6);
  opacity: 0.5;
  color: var(--color-gray-300);
}

.cart-empty h2 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
  color: var(--color-black);
  margin-bottom: var(--space-2);
}

.cart-empty p {
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.btn-shop {
  display: inline-block;
  background: #B8860B !important;
  color: #fff !important;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all 0.2s ease;
}

.btn-shop:hover {
  background: #996f00 !important;
}

/* 购物车商品 */
.cart-items {
  display: none;
}

.cart-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

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

.item-image {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
  flex-shrink: 0;
  overflow: hidden;
}

.item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.item-image i {
  font-size: 1.5rem;
  color: var(--color-gray-400);
}

.item-details {
  flex: 1;
  min-width: 0;
}

.item-series {
  font-size: var(--text-xs);
  color: var(--color-gold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.item-name {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-black);
  margin: 0 0 var(--space-1) 0;
  line-height: 1.4;
}

.item-variant {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin: 0 0 var(--space-2) 0;
}

.item-price {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  color: var(--color-black);
  margin: 0;
}

.item-size {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  margin: 0;
}

.item-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-end;
}

/* 数量控制 - Demo Style */
.quantity-controls {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  overflow: hidden;
}

.qty-minus,
.qty-plus {
  width: 32px;
  height: 32px;
  background: var(--color-white);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  font-weight: 400;
  color: var(--color-gray-600);
  transition: all 0.2s ease;
  padding: 0;
  margin: 0;
  line-height: 1;
}

.qty-minus:hover:not(:disabled),
.qty-plus:hover:not(:disabled) {
  background: var(--color-gray-100);
  color: var(--color-black);
}

.qty-minus:disabled,
.qty-plus:disabled,
.qty-minus.disabled,
.qty-plus.disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.qty-display {
  width: 40px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--color-gray-200);
  border-right: 1px solid var(--color-gray-200);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  background: var(--color-white);
  -moz-appearance: textfield;
  appearance: textfield;
}

/* 隐藏 number input 的默认 spinner */
.qty-display::-webkit-outer-spin-button,
.qty-display::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.item-remove {
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.item-remove:hover {
  background: var(--color-gray-100);
  color: var(--color-error);
}

.item-remove svg {
  width: 18px;
  height: 18px;
}

/* 购物车底部 - Demo Style */
.cart-footer {
  border-top: 1px solid var(--color-gray-200);
  padding: var(--space-6);
  background: var(--color-white);
}

.cart-totals {
  margin-bottom: var(--space-4);
}

.subtotal-row,
.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
}

.subtotal-row span:first-child {
  color: var(--color-gray-600);
}

.total-row {
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  color: var(--color-black);
  border-top: 1px solid var(--color-gray-200);
  padding-top: var(--space-4);
  margin-top: var(--space-3);
}

.total-row span:last-child {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
}

.cart-summary-note {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  background: var(--color-gray-100);
  border-radius: var(--radius-sm);
}

.btn-checkout {
  display: block;
  width: 100%;
  background: #B8860B !important;
  color: #fff !important;
  padding: var(--space-4);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: all 0.2s ease;
  margin-bottom: var(--space-3);
}

.btn-checkout:hover {
  background: #996f00 !important;
}

.btn-continue {
  display: block;
  width: 100%;
  background: transparent !important;
  color: #B8860B !important;
  padding: var(--space-3);
  border: 1px solid #B8860B !important;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-align: center;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-continue:hover {
  background: #B8860B !important;
  color: #fff !important;
}

.cart-security {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-gray-500);
}

.cart-security svg,
.cart-security i {
  width: 14px;
  height: 14px;
  color: var(--color-gray-400);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .cart-content {
    width: 90%;
    max-width: 420px;
  }
}

@media (max-width: 480px) {
  .cart-content {
    width: 100%;
  }

  .cart-header {
    padding: var(--space-4);
  }

  .cart-body {
    padding: var(--space-4);
  }

  .cart-footer {
    padding: var(--space-4);
  }

  .item-image {
    width: 70px;
    height: 70px;
  }
}