/* ---------- 购物车抽屉与加载动画 ---------- */

/* 遮罩层 */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(43, 35, 24, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 98;
  backdrop-filter: blur(4px);
}

.drawer-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

/* 购物车抽屉主体 */
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(400px, 90vw);
  height: 100vh;
  background: var(--cream);
  box-shadow: -4px 0 24px rgba(43, 35, 24, 0.15);
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 99;
  display: flex;
  flex-direction: column;
}

.cart-drawer[aria-hidden="false"] {
  transform: translateX(0);
}

/* 头部 */
.cart-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.3rem;
  border-bottom: 1px solid var(--gold-line);
  flex-shrink: 0;
}

.cart-drawer__head h3 {
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0;
}

.cart-drawer__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--ink-soft);
  transition: color 0.3s ease, transform 0.2s ease;
  border-radius: 50%;
  padding: 0;
}

.cart-drawer__close:hover {
  color: var(--ink);
  transform: rotate(90deg);
}

.cart-drawer__close svg {
  width: 18px;
  height: 18px;
}

/* 主体内容区域 */
.cart-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: 1.3rem;
  -webkit-overflow-scrolling: touch;
}

/* 空购物车 */
.cart-drawer__empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin: 0;
}

/* 错误提示 */
.cart-drawer__error {
  background: rgba(204, 51, 51, 0.1);
  color: #8b2020;
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  border-left: 3px solid #cc3333;
}

/* 购物车商品行 */
.cart-line {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 0.9rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--gold-line);
}

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

.cart-line__img {
  width: 70px;
  height: 93px;
  object-fit: cover;
  border-radius: 3px;
  background: var(--cream-deep);
}

.cart-line__info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cart-line__title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  letter-spacing: 0.01em;
  margin: 0;
}

.cart-line__title a {
  transition: color 0.3s ease;
}

.cart-line__title a:hover {
  color: var(--gold-bright);
}

.cart-line__meta {
  font-size: 0.75rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  margin: 0;
}

.cart-line__price {
  font-size: 0.95rem;
  color: var(--gold);
  font-weight: 600;
  margin: 0.3rem 0 0 0;
}

.cart-line__actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 0.6rem;
}

.cart-line__remove {
  background: transparent;
  border: none;
  color: var(--ink-soft);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.3s ease;
  padding: 0;
  font-family: var(--font-serif);
}

.cart-line__remove:hover {
  color: #cc3333;
}

/* 小尺寸数量选择器（抽屉内使用） */
.qty--sm {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--gold-line);
  border-radius: 3px;
  background: var(--cream-soft);
  height: 32px;
}

.qty--sm .qty__btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--ink-soft);
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.3s ease, background 0.3s ease;
  line-height: 1;
  padding: 0;
}

.qty--sm .qty__btn:hover {
  color: var(--ink);
  background: rgba(168, 134, 61, 0.08);
}

.qty--sm .qty__input {
  width: 40px;
  text-align: center;
  border: none;
  background: transparent;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--ink);
  -moz-appearance: textfield;
  padding: 0;
}

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

/* 底部结算区 */
.cart-drawer__foot {
  padding: 1.3rem;
  border-top: 1px solid var(--gold-line);
  background: var(--cream-soft);
  flex-shrink: 0;
}

.cart-drawer__subtotal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.cart-drawer__subtotal-label {
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.cart-drawer__subtotal-value {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--gold);
}

.cart-drawer__actions {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.cart-drawer__actions .btn {
  width: 100%;
  justify-content: center;
  font-size: 0.85rem;
  padding: 0.85rem 1.5rem;
  letter-spacing: 0.1em;
}

/* 页眉购物车图标数量气泡 */
.header__cart {
  position: relative;
}

.header__cart-count {
  position: absolute;
  top: -4px;
  right: -6px;
  min-width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold);
  color: var(--cream);
  font-size: 0.65rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 0 4px;
  line-height: 1;
}

.header__cart-count:empty {
  display: none;
}

/* 加购按钮加载动画 */
.btn__spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: 6px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn.is-loading {
  pointer-events: none;
  opacity: 0.7;
}

/* 骨架屏动画 */
.cart-skeleton {
  padding: 0;
}

.cart-skeleton__line {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 0.9rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--gold-line);
}

.cart-skeleton__img,
.cart-skeleton__bar {
  background: linear-gradient(
    90deg,
    var(--cream-deep) 0%,
    rgba(236, 226, 210, 0.5) 50%,
    var(--cream-deep) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 3px;
}

.cart-skeleton__img {
  width: 70px;
  height: 93px;
}

.cart-skeleton__content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cart-skeleton__bar {
  height: 14px;
}

.cart-skeleton__bar--title {
  width: 80%;
}

.cart-skeleton__bar--meta {
  width: 50%;
  height: 11px;
}

.cart-skeleton__bar--price {
  width: 35%;
  margin-top: auto;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 移动端优化 */
@media (max-width: 768px) {
  .cart-drawer {
    width: 100vw;
  }
  
  .cart-drawer__head {
    padding: 1.3rem 1.1rem;
  }
  
  .cart-drawer__head h3 {
    font-size: 1rem;
  }
  
  .cart-drawer__body {
    padding: 1.1rem;
  }
  
  .cart-drawer__foot {
    padding: 1.1rem;
  }
  
  .cart-line {
    grid-template-columns: 65px 1fr;
    gap: 0.8rem;
  }
  
  .cart-line__img,
  .cart-skeleton__img {
    width: 65px;
    height: 86px;
  }
  
  .cart-skeleton__line {
    grid-template-columns: 65px 1fr;
    gap: 0.8rem;
  }
  
  .cart-line__title {
    font-size: 0.85rem;
  }
  
  .cart-line__meta {
    font-size: 0.7rem;
  }
  
  .cart-line__price {
    font-size: 0.9rem;
  }
  
  .qty--sm {
    height: 30px;
  }
  
  .qty--sm .qty__btn {
    width: 30px;
    height: 30px;
    font-size: 0.85rem;
  }
  
  .qty--sm .qty__input {
    width: 36px;
    font-size: 0.8rem;
  }
  
  .cart-line__remove {
    font-size: 0.7rem;
  }
  
  .cart-drawer__subtotal-label {
    font-size: 0.8rem;
  }
  
  .cart-drawer__subtotal-value {
    font-size: 1.1rem;
  }
  
  .cart-drawer__actions .btn {
    font-size: 0.8rem;
    padding: 0.8rem 1.2rem;
  }
}