/* 购物车主容器 */
.cart-main {
    max-width: 1200px;
    margin: 80px auto 2rem;
    padding: 0 1rem;
}

.cart-container {
    background: var(--bg-color);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

/* 购物车头部 */
.cart-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cart-header .item-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cart-summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 购物车内容区域 */
.cart-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
    padding: 1.5rem;
    height: calc(100vh - 200px); /* 设置固定高度，减去头部和边距的空间 */
    min-height: 500px; /* 设置最小高度 */
    overflow: hidden; /* 防止整体滚动 */
}

/* 购物车商品列表 */
.cart-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-height: 100%;
    overflow-y: auto;
    padding: 0.5rem;
}

/* 自定义滚动条样式 */
.cart-items::-webkit-scrollbar {
    width: 6px;
}

.cart-items::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 3px;
}

.cart-items::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
    opacity: 0.5;
}

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

.cart-item {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: auto 100px 1fr auto;
    gap: 1.5rem;
    align-items: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    margin: 0.5rem 0;
}

.cart-item:first-child {
    margin-top: 0;
}

.cart-item:last-child {
    margin-bottom: 0;
}

.cart-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    z-index: 1;
}

.cart-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(var(--primary-color-rgb), 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cart-item:hover::before {
    opacity: 1;
}

.item-select {
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.item-checkbox {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    cursor: pointer;
    accent-color: var(--primary-color);
    z-index: 3;
}

.item-image {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    z-index: 3;
}

.item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    z-index: 3;
}

.cart-item:hover .item-image img {
    transform: scale(1.05);
}

.item-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 3;
}

.item-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin: 0;
    font-weight: 600;
}

.item-specs {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.item-spec {
    background: rgba(var(--primary-color-rgb), 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    color: var(--primary-color);
}

.item-price {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

.item-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-color);
    padding: 0.3rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.quantity-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    border-radius: 4px;
}

.quantity-btn:not(:disabled):hover {
    background: var(--primary-color);
    color: white;
}

.quantity-btn:disabled {
    color: var(--text-tertiary);
    cursor: not-allowed;
}

.quantity-input {
    width: 40px;
    text-align: center;
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    -moz-appearance: textfield;
}

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

.remove-item {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
    z-index: 2;
}

.remove-item:hover {
    color: #ff4444;
    background: rgba(255, 68, 68, 0.1);
}

.item-subtotal {
    text-align: right;
    white-space: nowrap;
}

.subtotal-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.subtotal-amount {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* 购物车侧边栏 */
.cart-sidebar {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    position: sticky;
    top: 100px;
    height: fit-content;
    border: 1px solid var(--border-color);
    max-height: calc(100vh - 220px); /* 设置最大高度 */
    overflow-y: auto; /* 添加垂直滚动 */
}

.cart-summary-box {
    margin-top: 1.5rem;
}

.cart-summary-box h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.8rem;
    color: var(--text-secondary);
}

.summary-item.final-total {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: bold;
    font-size: 1.1rem;
}

.checkout-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    transition: all 0.3s ease;
}

.checkout-btn:not(:disabled):hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.checkout-btn:disabled {
    background: var(--text-tertiary);
    cursor: not-allowed;
}

/* 空购物车样式 */
.empty-cart {
    display: none; /* 默认隐藏 */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    background: var(--bg-secondary);
    border-radius: 16px;
    margin: 2rem 0;
}

.empty-cart.visible {
    display: flex;
}

.empty-cart i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.empty-cart p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.continue-shopping {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.continue-shopping:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.continue-shopping i {
    font-size: 1rem;
    margin: 0;
    opacity: 1;
}

/* 优惠券部分 */
.coupon-section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.coupon-section h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.select-coupon-btn {
    width: 100%;
    padding: 0.8rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.2s;
}

.select-coupon-btn:hover {
    border-color: var(--primary-color);
}

.coupon-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-top: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.coupon-dropdown.active {
    display: block;
}

.coupon-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
}

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

.coupon-item:hover {
    background: var(--bg-secondary);
}

.coupon-info {
    margin-bottom: 0.5rem;
}

.coupon-name {
    font-weight: bold;
    color: var(--text-primary);
}

.coupon-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.coupon-amount {
    color: var(--primary-color);
    font-weight: bold;
}

/* 响应式适配 */
@media screen and (max-width: 1024px) {
    .cart-content {
        grid-template-columns: 1fr;
        height: auto;
        min-height: auto;
        padding: 1rem;
    }
    
    .cart-items {
        max-height: calc(100vh - 300px);
    }
    
    .cart-sidebar {
        position: static;
        margin-top: 1.5rem;
        max-height: none;
    }
}

@media screen and (max-width: 768px) {
    .cart-main {
        margin: 60px auto 1rem;
        padding: 0 0.5rem;
    }

    .cart-header {
        margin-top: 60px; /* 添加顶部边距，与固定导航栏保持一致 */
        padding: 1rem;
        position: sticky;
        top: 60px;
        background: var(--bg-color);
        z-index: 10;
        border-radius: 16px 16px 0 0;
    }

    .cart-content {
        padding: 0.5rem;
    }

    .cart-items {
        gap: 0.8rem;
        padding: 0.5rem;
        max-height: calc(100vh - 250px);
    }
    
    .cart-item {
        grid-template-columns: 1fr;
        grid-template-areas: 
            "select"
            "image"
            "info"
            "actions";
        padding: 1rem;
        gap: 1rem;
        margin: 0;
    }
    
    .item-select {
        grid-area: select;
        justify-content: flex-start;
        padding-left: 0.5rem;
    }
    
    .item-image {
        grid-area: image;
        width: 100%;
        height: 200px;
        margin: 0 auto;
    }
    
    .item-image img {
        object-fit: contain;
    }
    
    .item-info {
        grid-area: info;
        text-align: left;
        padding: 0 0.5rem;
    }

    .item-title {
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }
    
    .item-specs {
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-bottom: 0.5rem;
    }

    .item-spec {
        font-size: 0.8rem;
        padding: 0.2rem 0.6rem;
    }
    
    .item-actions {
        grid-area: actions;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 0 0.5rem;
        margin-top: 0;
    }

    .quantity-control {
        justify-content: space-between;
        padding: 0.5rem;
    }

    .quantity-btn {
        width: 32px;
        height: 32px;
    }

    .quantity-input {
        width: 50px;
        font-size: 1rem;
    }

    .item-subtotal {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem;
        background: var(--bg-color);
        border-radius: 6px;
        margin-top: 0.5rem;
    }

    .subtotal-label {
        margin-bottom: 0;
    }

    .remove-item {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
        width: auto;
        padding: 0.5rem;
        background: none;
        text-align: center;
        border-radius: 4px;
    }

    .remove-item:hover {
        background: rgba(255, 68, 68, 0.1);
    }

    /* 侧边栏移动端样式 */
    .cart-sidebar {
        padding: 1rem;
        margin-top: 1rem;
    }

    .summary-item {
        font-size: 0.9rem;
    }

    .summary-item.final-total {
        font-size: 1.2rem;
    }

    .checkout-btn {
        padding: 0.8rem;
        font-size: 1rem;
    }
}

/* 深色模式适配 */
@media (prefers-color-scheme: dark) {
    .cart-container {
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
    }

    .cart-item {
        background: var(--bg-color);
        border-color: var(--border-color);
    }

    .cart-item:hover {
        border-color: var(--primary-color);
    }

    .item-title {
        color: var(--text-primary);
    }

    .item-specs {
        color: var(--text-secondary);
    }

    .item-price {
        color: var(--primary-color);
    }

    .quantity-control {
        background: var(--bg-secondary);
        border-color: var(--border-color);
    }

    .quantity-btn {
        color: var(--text-primary);
    }

    .quantity-btn:not(:disabled):hover {
        background: var(--primary-color);
        color: white;
    }

    .quantity-input {
        color: var(--text-primary);
    }

    .remove-item {
        color: var(--text-tertiary);
    }

    .remove-item:hover {
        color: #ff4444;
        background: rgba(255, 68, 68, 0.2);
    }

    .cart-sidebar {
        background: var(--bg-color);
        border-color: var(--border-color);
    }

    .summary-item {
        color: var(--text-secondary);
    }

    .summary-item.final-total {
        color: var(--text-primary);
    }

    .checkout-btn {
        background: var(--primary-color);
    }

    .checkout-btn:not(:disabled):hover {
        background: var(--primary-dark);
    }

    .checkout-btn:disabled {
        background: var(--text-tertiary);
    }

    .empty-cart i {
        color: var(--primary-color);
    }

    .empty-cart p {
        color: var(--text-secondary);
    }

    .continue-shopping {
        background: var(--primary-color);
    }

    .continue-shopping:hover {
        background: var(--primary-dark);
    }

    .select-coupon-btn {
        background: var(--bg-secondary);
        border-color: var(--border-color);
        color: var(--text-primary);
    }

    .select-coupon-btn:hover {
        border-color: var(--primary-color);
    }

    .coupon-dropdown {
        background: var(--bg-color);
        border-color: var(--border-color);
    }

    .coupon-item {
        border-color: var(--border-color);
    }

    .coupon-item:hover {
        background: var(--bg-secondary);
    }

    .coupon-name {
        color: var(--text-primary);
    }

    .coupon-desc {
        color: var(--text-secondary);
    }

    .coupon-amount {
        color: var(--primary-color);
    }
}

/* 主题色适配 */
:root[data-theme="purple"] {
    --primary-color: var(--theme-purple-primary);
    --primary-light: var(--theme-purple-light);
    --primary-dark: var(--theme-purple-dark);
}

:root[data-theme="blue"] {
    --primary-color: var(--theme-blue-primary);
    --primary-light: var(--theme-blue-light);
    --primary-dark: var(--theme-blue-dark);
}

:root[data-theme="green"] {
    --primary-color: var(--theme-green-primary);
    --primary-light: var(--theme-green-light);
    --primary-dark: var(--theme-green-dark);
}

:root[data-theme="orange"] {
    --primary-color: var(--theme-orange-primary);
    --primary-light: var(--theme-orange-light);
    --primary-dark: var(--theme-orange-dark);
}

/* 支付弹窗样式 */
.payment-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.payment-modal.visible {
    display: flex;
}

.payment-content {
    background: var(--bg-color);
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.payment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.payment-header h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 0;
}

.close-payment {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
}

.close-payment:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.payment-amount {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 1.5rem;
}

.amount-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.amount-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.payment-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.payment-method:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.payment-method input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.method-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.method-icon i {
    transition: transform 0.2s;
}

.payment-method:hover .method-icon i {
    transform: scale(1.1);
}

.method-name {
    font-size: 1rem;
    color: var(--text-primary);
}

.payment-footer {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.cancel-payment {
    flex: 1;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.cancel-payment:hover {
    border-color: var(--text-primary);
    background: var(--bg-color);
}

.confirm-payment {
    flex: 2;
    padding: 0.8rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: all 0.2s;
}

.confirm-payment:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.confirm-payment i {
    font-size: 0.9rem;
}

/* 移动端适配 */
@media screen and (max-width: 480px) {
    .payment-content {
        width: 95%;
        padding: 1rem;
    }
    
    .payment-header h3 {
        font-size: 1.1rem;
    }
    
    .amount-value {
        font-size: 1.5rem;
    }
    
    .payment-method {
        padding: 0.8rem;
    }
    
    .method-icon {
        width: 24px;
        height: 24px;
        font-size: 1.2rem;
    }
    
    .method-name {
        font-size: 0.9rem;
    }
    
    .payment-footer {
        flex-direction: column;
    }
    
    .cancel-payment,
    .confirm-payment {
        width: 100%;
    }
}