/* ==========================================================================
   cart 系列页面 · 基础布局样式（自包含）
   --------------------------------------------------------------------------
   背景：这套页面原先依赖模板自带的 static/css/（bootstrap + custom.css +
   iconfont + themify-icons），但本站从来没有 static/ 目录，那 11 个 <link> /
   <script> 全部 404，于是：
     · 容器没有宽度 → 内容被压成一条窄柱
     · 产品卡没有网格 → 竖向堆叠
     · .spec-icon 靠 jQuery 注入，jQuery 404 → 图标全丢
   现在这份文件把这套页面真正需要的布局全部自己实现，不再依赖任何外部库。

   作用域：所有规则都收在 .cart-page 下，避免污染全站公共头尾。
   配色沿用站点令牌（--a1/--a2/--a3 + 墨色阶），和首页同一套皮肤。
   ========================================================================== */

/* ---------------------------------------------------------------- 容器 */
.cart-page {
    position: relative;
    z-index: 1;
    padding: 18px 0 40px;
}

.cart-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------------------------------------------------- 一级分类（产品分类） */
.cart-nav-level1 {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 14px;
}

.cart-nav-label {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
    padding: 9px 0;
    font-size: 13px;
    font-weight: 700;
    color: var(--ink-2, #4B5C7E);
    white-space: nowrap;
}

.cart-nav-label-icon {
    display: block;
    flex: 0 0 auto;
    color: var(--a1, #3355FF);
}

.cart-nav-level1-tabs {
    display: flex;
    flex: 1 1 auto;
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
}

.cart-nav-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 13px;
    line-height: 1.4;
    color: var(--ink-2, #4B5C7E);
    white-space: nowrap;
    background: rgba(255, 255, 255, .68);
    border: 1px solid rgba(196, 210, 232, .55);
    border-radius: 12px;
    transition: background .22s ease, color .22s ease, border-color .22s ease, transform .22s ease;
}

.cart-nav-tab:hover {
    color: var(--a1, #3355FF);
    background: rgba(255, 255, 255, .92);
    border-color: rgba(51, 85, 255, .28);
    transform: translateY(-1px);
}

.cart-nav-tab.active {
    color: #fff;
    background: var(--grad, linear-gradient(135deg, #3355FF, #6D4BFF 52%, #22C3E6));
    border-color: transparent;
    box-shadow: 0 8px 18px -8px rgba(51, 85, 255, .55);
}

.cart-nav-tab-icon {
    display: inline-flex;
    flex: 0 0 16px;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    opacity: .85;
}

.cart-nav-tab-icon svg {
    display: block;
    width: 16px;
    height: 16px;
}

.cart-nav-tab.active .cart-nav-tab-icon {
    opacity: 1;
}

/* ---------------------------------------------------- 二级分类（产品系列） */
.cart-nav-level2 {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.cart-nav-level2-card {
    display: flex;
    flex: 1 1 auto;
    flex-wrap: wrap;
    gap: 10px;
    min-width: 0;
    padding: 10px 14px;
    background: rgba(255, 255, 255, .58);
    border: 1px solid rgba(255, 255, 255, .92);
    border-radius: 16px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 10px 26px -22px rgba(38, 64, 140, .5);
}

.cart-nav-level2-item {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--ink-2, #4B5C7E);
    background: rgba(255, 255, 255, .78);
    border: 1px solid rgba(196, 210, 232, .5);
    border-radius: 10px;
    transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.cart-nav-level2-item:hover {
    color: var(--a1, #3355FF);
    border-color: rgba(51, 85, 255, .26);
}

.cart-nav-level2-item.active {
    color: #fff;
    background: var(--grad, linear-gradient(135deg, #3355FF, #6D4BFF 52%, #22C3E6));
    border-color: transparent;
    box-shadow: 0 6px 14px -8px rgba(51, 85, 255, .5);
}

/* ---------------------------------------------------------- 区域标题 */
.cart-area-info {
    margin: 4px 0 16px;
}

.cart-area-name {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0;
    font-size: 20px;
    font-weight: 800;
    line-height: 1.4;
    color: var(--ink, #16233F);
    letter-spacing: -.2px;
}

.cart-area-name::before {
    content: "";
    flex: 0 0 4px;
    width: 4px;
    height: 18px;
    border-radius: 2px;
    background: var(--grad, linear-gradient(180deg, #3355FF, #22C3E6));
}

.cart-area-desc {
    margin: 6px 0 0 13px;
    font-size: 13px;
    line-height: 1.7;
    color: var(--ink-3, #7C8AA6);
}

/* ---------------------------------------------------------- 产品网格 */
.cart-products-wrap {
    margin-top: 4px;
}

.cart-products {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: stretch;
}

.cart-no-data {
    padding: 60px 20px;
    font-size: 14px;
    color: var(--ink-3, #7C8AA6);
    text-align: center;
}

/* ---------------------------------------------------------- 产品卡片 */
.cart-page .product-card {
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: rgba(255, 255, 255, .74);
    -webkit-backdrop-filter: blur(20px) saturate(170%);
    backdrop-filter: blur(20px) saturate(170%);
    border: 1px solid rgba(255, 255, 255, .9);
    border-radius: 20px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 14px 32px -24px rgba(28, 52, 120, .55);
    overflow: hidden;
    transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}

.cart-page .product-card:hover {
    transform: translateY(-3px);
    border-color: rgba(51, 85, 255, .22);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 20px 40px -24px rgba(28, 52, 120, .6);
}

.cart-page .product-card-head {
    padding: 16px 18px;
    border-bottom: 1px solid rgba(196, 210, 232, .48);
}

.cart-page .product-card-title {
    margin: 0;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--ink, #16233F);
    word-break: break-word;
}

/* 规格列表：默认单列，JS 加上 .has-list 后走两列网格 */
.cart-page .product-card-specs {
    display: grid;
    gap: 9px 14px;
    padding: 15px 18px;
    margin: 0;
    flex: 1 1 auto;
    align-content: start;
}

.cart-page .product-card-specs.has-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cart-page .product-card-specs li {
    display: flex;
    align-items: flex-start;
    gap: 7px;
    min-width: 0;
    font-size: 13px;
    line-height: 1.55;
    color: var(--ink-2, #4B5C7E);
    list-style: none;
    word-break: break-word;
}

/* 规格行图标（由 cart.js 注入，没有图标字体依赖） */
.cart-page .spec-icon {
    display: inline-flex;
    flex: 0 0 16px;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-top: 1px;
    color: var(--a1, #3355FF);
}

.cart-page .spec-icon svg {
    display: block;
    width: 16px;
    height: 16px;
}

/* ---------------------------------------------------------- 价格 / 按钮 */
.cart-page .product-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px 18px;
    margin-top: auto;
    border-top: 1px solid rgba(196, 210, 232, .48);
}

.cart-page .product-price-box {
    display: flex;
    align-items: baseline;
    gap: 1px;
    min-width: 0;
}

.cart-page .product-price-symbol {
    font-size: 14px;
    font-weight: 700;
    color: var(--a1, #3355FF);
}

.cart-page .product-price-num {
    font-size: 26px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -.5px;
    color: var(--a1, #3355FF);
    background: var(--grad, linear-gradient(135deg, #3355FF, #6D4BFF 62%));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cart-page .product-price-unit {
    font-size: 12px;
    color: var(--ink-3, #7C8AA6);
}

.cart-page .product-buy-btn {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    padding: 9px 18px;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
    background: var(--grad, linear-gradient(135deg, #3355FF, #6D4BFF 52%, #22C3E6));
    border-radius: 12px;
    box-shadow: 0 8px 18px -9px rgba(51, 85, 255, .6);
    transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.cart-page .product-buy-btn:hover {
    color: #fff;
    transform: translateY(-1px);
    filter: brightness(1.05);
    box-shadow: 0 12px 24px -9px rgba(51, 85, 255, .7);
}

.cart-page .product-buy-btn:active {
    transform: translateY(0);
}

/* ---------------------------------------------------------- 响应式 */
@media (max-width: 1200px) {
    .cart-container { padding: 0 20px; }
}

@media (max-width: 992px) {
    .cart-page { padding-top: 14px; }
    .cart-products { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
    .cart-nav-level1 { flex-direction: column; gap: 8px; margin-bottom: 12px; }
    .cart-nav-label { padding: 0; }
    .cart-nav-level2 { flex-direction: column; align-items: stretch; gap: 8px; }
    .cart-nav-level2-card { padding: 9px 12px; }
    .cart-area-name { font-size: 18px; }
}

@media (max-width: 640px) {
    .cart-container { padding: 0 16px; }
    .cart-products { grid-template-columns: minmax(0, 1fr); }
    .cart-nav-tab { padding: 7px 11px; font-size: 12.5px; }
    .cart-page .product-card-specs.has-list { grid-template-columns: minmax(0, 1fr); }
    .cart-page .product-card-foot { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
    .cart-page .product-card,
    .cart-page .product-buy-btn,
    .cart-nav-tab,
    .cart-nav-level2-item { transition: none; }
    .cart-page .product-card:hover { transform: none; }
}