/* 优选商城 - 现代电商首页样式 */

/* 主要内容区 */
.main-content {
    padding: 30px 0;
}

/* 英雄区域 */
.hero-section {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

/* 分类菜单 */
.category-menu {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    height: 620px;
    display: flex;
    flex-direction: column;
}

.category-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.category-list {
    padding: 10px 0;
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
}

/* 隐藏滚动条但保持滚动功能 */
.category-list::-webkit-scrollbar {
    width: 6px;
}

.category-list::-webkit-scrollbar-track {
    background: transparent;
}

.category-list::-webkit-scrollbar-thumb {
    background: transparent;
}

.category-list:hover::-webkit-scrollbar-thumb {
    background: var(--gray-color);
    border-radius: 3px;
}

.category-list:hover::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.category-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.category-item:hover {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.1), transparent);
    border-left-color: var(--primary-color);
    transform: translateX(5px);
}

.category-icon {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    margin-right: 12px;
    font-size: 16px;
}

.category-item span {
    flex: 1;
    font-weight: 500;
    color: var(--dark-color);
}

.arrow {
    color: var(--gray-color);
    font-size: 12px;
}

/* 轮播图 */
.banner-slider {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    height: 400px;
    margin-bottom: 20px;
}

.slider-wrapper {
    position: relative;
    height: 100%;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slide.active {
    opacity: 1;
}

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

.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 60px 40px 40px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: #fff;
}

.slide-content h2 {
    font-size: 36px;
    margin-bottom: 10px;
    font-weight: 700;
}

.slide-content p {
    font-size: 18px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.slide-btn {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.slide-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    border: none;
    color: var(--dark-color);
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    pointer-events: auto;
    transition: var(--transition);
}

.control-btn:hover {
    background: #fff;
    transform: scale(1.1);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: #fff;
    width: 30px;
    border-radius: 6px;
}

/* 快捷功能 */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.action-item {
    background: #fff;
    padding: 25px 15px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
}

.action-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.action-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    transition: var(--transition);
}

.action-item:hover .action-icon {
    transform: rotate(360deg);
}

.action-item span {
    font-weight: 500;
    color: var(--dark-color);
}

/* 促销横幅 */
.promo-banner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.promo-item {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.promo-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: shimmer 3s infinite;
}

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

.promo-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.promo-left {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.promo-center {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.promo-right {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.promo-content {
    flex: 1;
    z-index: 1;
}

.promo-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
}

.promo-content p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 20px;
}

.promo-btn {
    background: rgba(255,255,255,0.2);
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.promo-btn:hover {
    background: #fff;
    color: var(--primary-color);
    transform: scale(1.05);
}

.promo-icon {
    font-size: 60px;
    opacity: 0.3;
    z-index: 1;
}

/* 分区标题 */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-header h2 i {
    color: var(--primary-color);
}

.view-more {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.view-more:hover {
    gap: 10px;
}

/* 商品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

/* 商品卡片 */
.product-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.product-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-badges {
    position: absolute;
    top: 15px;
    left: 15px;
    display: flex;
    gap: 8px;
}

.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
}

.badge.new {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.badge.hot {
    background: linear-gradient(135deg, #ff6b6b, #ff8e53);
}

.badge.discount {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.product-info {
    padding: 20px;
}

.product-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 15px;
    line-height: 1.4;
    height: 44px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.current-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--warning-color);
}

.original-price {
    font-size: 14px;
    color: var(--gray-color);
    text-decoration: line-through;
}

.product-sales {
    font-size: 13px;
    color: var(--gray-color);
}

/* 限时特惠 */
.flash-sale-section .section-header {
    background: linear-gradient(135deg, #ff6b6b, #ff8e53);
    padding: 25px 30px;
    border-radius: 16px;
    margin-bottom: 30px;
}

.flash-sale-section h2 {
    color: #fff;
}

.flash-sale-section h2 i {
    color: #fff;
}

.countdown {
    display: flex;
    gap: 5px;
    align-items: center;
}

.countdown-item {
    background: rgba(255,255,255,0.3);
    color: #fff;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 20px;
    font-weight: 700;
    min-width: 40px;
    text-align: center;
}

.progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(0,0,0,0.1);
    border-radius: 0 0 16px 16px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, #ff6b6b, #ff8e53);
    transition: width 0.3s ease;
}

.sold-count {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(255,107,107,0.9);
    color: #fff;
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

/* 为你推荐 */
.recommend-section {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 50px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        max-width: 95%;
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .brand-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .promo-banner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .hero-section {
        grid-template-columns: 1fr;
    }

    .category-menu {
        display: none;
    }

    .quick-actions {
        grid-template-columns: repeat(3, 1fr);
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .search-section {
        padding: 20px 0;
    }

    .banner-slider {
        height: 300px;
    }

    .slide-content h2 {
        font-size: 24px;
    }

    .slide-content p {
        font-size: 14px;
    }

    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
    }

    .promo-banner {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .promo-item {
        padding: 20px;
    }

    .promo-content h3 {
        font-size: 20px;
    }

    .promo-icon {
        font-size: 40px;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .brand-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .flash-sale-section .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }

    .search-input {
        font-size: 14px;
    }

    .search-btn {
        padding: 12px 20px;
        font-size: 14px;
    }

    .banner-slider {
        height: 250px;
    }

    .promo-content h3 {
        font-size: 18px;
    }

    .promo-content p {
        font-size: 12px;
    }

    .promo-btn {
        padding: 8px 20px;
        font-size: 12px;
    }

    .promo-icon {
        font-size: 35px;
    }
}