/* 移动端购物车页面样式 */

/* 购物车容器 */
.cart-mobile-container {
    padding: var(--space-md) var(--mobile-container-padding);
    padding-bottom: calc(80px + env(safe-area-inset-bottom)); /* 为底部导航留空间 */
}

/* 空购物车状态 */
.cart-empty-state {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    margin-top: var(--space-xl);
}

.cart-empty-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.cart-empty-icon i {
    font-size: 2rem;
    color: var(--text-light);
}

.cart-empty-title {
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-dark);
}

.cart-empty-description {
    color: var(--text-medium);
    margin-bottom: var(--space-lg);
}

/* 购物车项目 */
.cart-item {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--space-md);
    transition: transform 0.2s ease;
}

.cart-item:active {
    transform: scale(0.99);
}

.cart-item-image {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--bg-light);
}

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

.cart-item-content {
    flex-grow: 1;
    min-width: 0; /* 防止内容溢出 */
}

.cart-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
}

.cart-item-title {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.4;
    margin-bottom: 4px;
}

.cart-item-price {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
}

.cart-item-remove {
    background: transparent;
    border: none;
    color: var(--text-light);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background-color 0.2s ease;
}

.cart-item-remove:active {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
}

.cart-item-variant {
    font-size: 0.85rem;
    color: var(--text-medium);
    margin-bottom: var(--space-sm);
}

/* 数量选择器 */
.cart-item-quantity {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-md);
}

.quantity-control {
    display: flex;
    align-items: center;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.quantity-btn {
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    color: var(--text-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: background-color 0.2s ease;
}

.quantity-btn:active {
    background: rgba(0, 0, 0, 0.05);
}

.quantity-value {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
}

.cart-item-total {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1.1rem;
}

/* 购物车摘要 */
.cart-summary-mobile {
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: var(--space-md) var(--mobile-container-padding);
    padding-bottom: calc(20px + env(safe-area-inset-bottom));
    position: sticky;
    bottom: 0;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
}

.summary-row.total {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.summary-label {
    color: var(--text-medium);
}

.summary-value {
    color: var(--text-dark);
}

.summary-value.discount {
    color: var(--secondary-color);
}

.summary-value.shipping-free {
    color: var(--secondary-color);
}

/* 优惠码 */
.cart-promo {
    margin: var(--space-md) 0;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
}

.promo-input-group {
    display: flex;
    gap: var(--space-sm);
}

.promo-input {
    flex-grow: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--mobile-font-base);
}

.promo-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    font-weight: 500;
    min-width: 80px;
}

.promo-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.promo-message {
    font-size: 0.85rem;
    margin-top: var(--space-xs);
}

.promo-message.success {
    color: var(--secondary-color);
}

.promo-message.error {
    color: #EF4444;
}

/* 行动按钮 */
.cart-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.cart-action-btn {
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    text-decoration: none;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    min-height: var(--mobile-tap-target);
}

.cart-action-btn.primary {
    background: var(--primary-color);
    color: white;
    border: none;
}

.cart-action-btn.primary:active {
    background: #1D4ED8;
    transform: translateY(1px);
}

.cart-action-btn.secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cart-action-btn.secondary:active {
    background: rgba(37, 99, 235, 0.1);
}

.cart-action-btn i {
    font-size: 1.1rem;
}

/* 继续购物 */
.continue-shopping {
    text-align: center;
    padding: var(--space-md);
}

.continue-shopping a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.continue-shopping a:active {
    opacity: 0.8;
}

/* 推荐商品 */
.cart-recommendations {
    margin-top: var(--space-xl);
}

.recommendations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.recommendations-title {
    font-weight: 600;
    color: var(--text-dark);
}

.recommendations-link {
    color: var(--primary-color);
    font-size: 0.9rem;
    text-decoration: none;
}

.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.recommendation-item {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}

.recommendation-item:active {
    transform: scale(0.98);
}

.recommendation-image {
    width: 100%;
    height: 120px;
    background: var(--bg-light);
    overflow: hidden;
}

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

.recommendation-content {
    padding: var(--space-md);
}

.recommendation-title {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-dark);
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recommendation-price {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
}

/* 购物车侧边栏（移动端） */
.cart-offcanvas-mobile .offcanvas-body {
    padding: 0;
}

.cart-offcanvas-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg-white);
    z-index: 1;
}

.cart-offcanvas-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.cart-offcanvas-close {
    background: transparent;
    border: none;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-medium);
    border-radius: var(--radius-sm);
}

.cart-offcanvas-close:active {
    background: var(--bg-light);
}

/* 购物车浮动按钮 */
.cart-floating-btn {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 1010;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.cart-floating-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* 加载状态 */
.cart-loading {
    padding: var(--space-xl);
    text-align: center;
}

.cart-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 错误状态 */
.cart-error {
    padding: var(--space-xl);
    text-align: center;
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-lg);
    margin: var(--space-md);
}

.cart-error-icon {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    color: #EF4444;
}

.cart-error-icon i {
    font-size: 1.5rem;
}

.cart-error-message {
    color: var(--text-dark);
    margin-bottom: var(--space-md);
}

/* 响应式调整 */
@media (min-width: 768px) {
    .cart-mobile-container {
        max-width: 768px;
        margin: 0 auto;
        padding: var(--space-lg);
    }
    
    .recommendations-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cart-item {
        padding: var(--space-lg);
    }
    
    .cart-summary-mobile {
        border-radius: var(--radius-lg);
        margin: var(--space-lg) auto;
        max-width: 768px;
        position: static;
        box-shadow: var(--shadow-sm);
    }
}

@media (min-width: 1024px) {
    .cart-mobile-container {
        max-width: 1024px;
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: var(--space-xl);
        align-items: start;
    }
    
    .cart-summary-mobile {
        position: sticky;
        top: 100px;
        margin: 0;
    }
    
    .cart-floating-btn {
        display: none;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    .cart-item,
    .cart-summary-mobile,
    .recommendation-item {
        background: #1F2937;
        border-color: #374151;
    }
    
    .cart-item-title,
    .cart-item-total,
    .summary-value,
    .recommendation-title {
        color: #E5E7EB;
    }
    
    .cart-empty-state,
    .cart-promo {
        background: #1F2937;
    }
    
    .quantity-control {
        background: #374151;
    }
    
    .quantity-btn {
        color: #9CA3AF;
    }
    
    .cart-offcanvas-header {
        background: #1F2937;
        border-color: #374151;
    }
}