/* =========================================
   购物车样式 - 底部固定栏设计
   ======================================== */

/* 底部固定购物车容器 */
.shopping-cart {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--neutral-white);
    border-top: 3px solid var(--primary-red);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    overflow: hidden;
    max-height: 500px;
    transition: max-height 0.3s ease;
}

/* 购物车头部 */
.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-red), var(--primary-red-dark));
    color: var(--neutral-white);
    cursor: pointer;
    user-select: none;
}

.cart-header:hover {
    background: linear-gradient(135deg, var(--primary-red-dark), var(--primary-red));
}

.cart-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 16px;
    font-weight: 600;
}

.cart-count {
    background: var(--accent-gold);
    color: var(--neutral-white);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: bold;
}

/* 购物车标题栏按钮组 */
.cart-header-actions {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-left: auto;
    margin-right: 10px;
}

.cart-header-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.cart-header-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
}

.cart-header-btn-clear:hover {
    background: rgba(220, 53, 69, 0.6);
}

.cart-header-btn-excel {
    background: rgba(33, 115, 70, 0.5);
}

.cart-header-btn-excel:hover {
    background: rgba(33, 115, 70, 0.8);
}

.cart-header-btn-pdf {
    background: rgba(180, 30, 30, 0.5);
}

.cart-header-btn-pdf:hover {
    background: rgba(180, 30, 30, 0.8);
}

.cart-toggle-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--neutral-white);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(180deg);
}

/* 购物车内容区 */
.cart-content {
    max-height: 420px;
    overflow-y: auto;
    background-color: var(--neutral-white);
}

/* 收起状态的购物车 */
.shopping-cart.collapsed .cart-content {
    display: none;
}

.shopping-cart.collapsed .cart-header {
    border-bottom: none;
}

/* 购物车商品列表 */
.cart-items {
    padding: var(--spacing-md);
}

.cart-item {
    display: grid;
    grid-template-columns: minmax(120px, 280px) 80px 100px 100px 24px;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: #f9f9f9;
    border: 1px solid var(--neutral-light);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-sm);
    transition: all 0.2s ease;
}

.cart-item:hover {
    background-color: #f0f0f0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cart-item-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cart-item-model {
    font-weight: 600;
    color: var(--secondary-blue);
    font-size: 14px;
}

.cart-item-category {
    font-size: 12px;
    color: var(--neutral-medium);
}

/* 购物车单行调整备注标签 */
.cart-adjust-note {
    display: inline-block;
    margin-left: 5px;
    padding: 1px 5px;
    background: #fff8e1;
    border: 1px solid #ffe082;
    border-radius: 3px;
    font-size: 11px;
    color: #7a5800;
    vertical-align: middle;
}


.cart-item-price {
    font-weight: 500;
    color: var(--primary-red);
    font-size: 13px;
}

/* 购物车数量控制 */
.cart-item-quantity {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.cart-item-qty-label {
    font-size: 11px;
    color: var(--neutral-medium);
    font-weight: normal;
    text-align: left;
}

.qty-btn {
    background: #e0e0e0;
    color: #333;
    border: 1px solid #ccc;
    width: 24px;
    height: 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.2s ease;
}

.qty-btn:hover {
    background: #d0d0d0;
    transform: scale(1.05);
}

.qty-input {
    width: 60px;
    padding: 4px 8px;
    border: 1px solid var(--neutral-light);
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-size: 14px;
    font-weight: 600;
}

.qty-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 2px rgba(204, 0, 0, 0.1);
}

/* 购物车单价列 */
.cart-item-price-column {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;
}

.cart-item-price-label {
    font-size: 11px;
    color: var(--neutral-medium);
    font-weight: normal;
    text-align: left;
}

.cart-item-price-value {
    font-weight: 600;
    color: var(--secondary-blue);
    font-size: 14px;
    text-align: left;
}

/* 购物车单项金额 */
.cart-item-total {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;
}

.cart-item-total-label {
    font-size: 11px;
    color: var(--neutral-medium);
    font-weight: normal;
    text-align: left;
}

.cart-item-total-value {
    font-weight: bold;
    color: var(--primary-red);
    font-size: 15px;
    text-align: left;
}

/* 购物车删除按钮 */
.cart-item-remove {
    background: #dc3545;
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.cart-item-remove:hover {
    background: #c82333;
    transform: scale(1.1);
}

/* 购物车空状态 */
.cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
    color: var(--neutral-medium);
    text-align: center;
}

.cart-empty i {
    font-size: 48px;
    color: var(--neutral-light);
    margin-bottom: var(--spacing-lg);
}

.cart-empty p {
    font-size: 15px;
    margin: 0;
}

/* 购物车汇总 */
.cart-summary {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-top: 2px solid var(--primary-red);
}

.cart-total-row {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 6px;
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-red);
    margin-bottom: var(--spacing-lg);
}

/* 购物车操作按钮 */
.cart-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cart-btn {
    flex: 1;
    min-width: 100px;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: white;
}

.cart-btn-clear {
    background: #dc3545;
}

.cart-btn-clear:hover {
    background: #c82333;
}

.cart-btn-excel {
    background: #28a745;
}

.cart-btn-excel:hover {
    background: #25750f;
}

.cart-btn-pdf {
    background: var(--secondary-blue);
}

.cart-btn-pdf:hover {
    background: var(--secondary-blue-light);
}

/* 购物车通知 */
.cart-notification {
    position: fixed;
    bottom: 420px;
    right: 20px;
    background: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 14px;
    z-index: 10001;
    min-width: 250px;
    animation: slideInUp 0.3s ease;
}

.cart-notification-success {
    border-left: 4px solid var(--accent-green);
    color: var(--accent-green);
}

.cart-notification-warning {
    border-left: 4px solid #ffc107;
    color: #856404;
}

.cart-notification-info {
    border-left: 4px solid var(--secondary-blue);
    color: var(--secondary-blue);
}

.cart-notification-hide {
    animation: slideOutUp 0.3s ease;
    opacity: 0;
}

@keyframes slideInUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideOutUp {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(50px);
        opacity: 0;
    }
}

/* 表格中的数量输入框 */
.cart-quantity-input {
    width: 70px;
    padding: 6px 8px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-size: 14px;
    font-weight: 600;
}

.cart-quantity-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 2px rgba(204, 0, 0, 0.1);
}

/* 表格中的加入按钮 */
.cart-add-btn {
    background: var(--accent-green);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-add-btn:hover {
    background: #25750f;
    transform: scale(1.1);
}

.cart-add-btn:active {
    transform: scale(0.95);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .shopping-cart {
        max-height: 70vh;
    }

    .cart-content {
        max-height: calc(70vh - 56px);
    }

    .cart-notification {
        bottom: 320px;
        right: 10px;
        left: 10px;
    }

    /* 标题栏按钮组在手机上缩小 */
    .cart-header-btn {
        padding: 3px 7px;
        font-size: 11px;
    }

    .cart-header-actions {
        gap: 4px;
        margin-right: 6px;
    }

    /* 购物车商品行：手机端两行布局 */
    .cart-item {
        display: flex;
        flex-direction: column;
        gap: 6px;
        padding: 10px;
    }

    /* 第一行：型号规格，占满整行 */
    .cart-item-info {
        width: 100%;
        flex-shrink: 0;
    }

    /* 第二行：数量 + 单价 + 金额 + 删除按钮，横排一行 */
    .cart-item-quantity,
    .cart-item-price-column,
    .cart-item-total {
        flex: 1;
        min-width: 0;
        flex-direction: column;
        align-items: flex-start;
    }

    .cart-item-remove {
        flex-shrink: 0;
        align-self: center;
        margin-left: 4px;
    }

    /* 用order控制顺序，并让第二行四元素横排 */
    .cart-item-info    { order: 0; }
    .cart-item-quantity      { order: 1; display: flex; }
    .cart-item-price-column  { order: 2; display: flex; }
    .cart-item-total         { order: 3; display: flex; }
    .cart-item-remove        { order: 4; }

    /* cart-item 改为 wrap，info独占一行，其余横排 */
    .cart-item {
        display: flex;
        flex-wrap: wrap;
        flex-direction: row;
        align-items: flex-start;
        gap: 0;
        row-gap: 6px;
    }

    .cart-item-info {
        width: 100%;
    }

    .cart-item-quantity,
    .cart-item-price-column,
    .cart-item-total {
        flex: 1;
        padding: 2px 4px;
    }

    .cart-item-remove {
        width: 28px;
        display: flex;
        align-items: center;
        justify-content: center;
        align-self: center;
    }

    .cart-item-model {
        font-size: 13px;
    }

    .cart-item-category {
        font-size: 11px;
    }
}

/* 手机端更窄时进一步优化 */
@media (max-width: 480px) {
    .cart-item {
        padding: 8px;
    }

    .cart-total-row {
        font-size: 15px;
    }

    .cart-header-btn span,
    .cart-header-btn i + * {
        display: none;
    }
}

/* 含税/不含税切换按钮 */
.cart-tax-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border: 1px solid var(--primary-red);
    border-radius: 12px;
    background: transparent;
    color: var(--primary-red);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: 10px;
    white-space: nowrap;
}

.cart-tax-toggle:hover {
    background: rgba(195, 25, 6, 0.08);
}

.cart-tax-toggle.cart-tax-toggle-on {
    background: var(--primary-red);
    color: #fff;
}

.cart-tax-toggle.cart-tax-toggle-on:hover {
    background: var(--primary-red-dark);
}

/* 滚动条样式 */
.cart-content::-webkit-scrollbar {
    width: 8px;
}

.cart-content::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.cart-content::-webkit-scrollbar-thumb {
    background: var(--primary-red);
    border-radius: 4px;
}

.cart-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-red-dark);
}