/* ====================================
   银龄国际用品店 - 京东风格样式表
   ==================================== */

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #e31937;
    --secondary-color: #c60c30;
    --jd-red: #e31937;
    --jd-orange: #ff6b00;
    --text-color: #333;
    --text-light: #666;
    --text-muted: #999;
    --bg-color: #f4f4f4;
    --white: #fff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
    --radius: 4px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-color);
    background: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 10px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* 顶部广告 */
.top-banner {
    background: var(--jd-red);
    color: var(--white);
    padding: 8px 0;
    text-align: center;
    font-size: 12px;
}

/* 顶部导航 */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 30px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 48px;
}

.logo-text h1 {
    font-size: 28px;
    color: var(--jd-red);
    font-weight: bold;
    font-family: 'Microsoft YaHei', sans-serif;
}

.logo-text p {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.search-bar {
    flex: 1;
    max-width: 600px;
}

.search-bar input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--jd-red);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 14px;
    outline: none;
}

.search-bar button {
    width: 120px;
    padding: 12px 20px;
    background: var(--jd-red);
    color: var(--white);
    border: none;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 0 var(--radius) var(--radius) 0;
    transition: var(--transition);
}

.search-bar button:hover {
    background: var(--secondary-color);
}

.search-hot {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.search-hot a {
    margin-right: 10px;
    color: var(--text-light);
}

.search-hot a:hover {
    color: var(--jd-red);
}

.header-service {
    display: flex;
    gap: 20px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--text-light);
}

.service-icon {
    font-size: 16px;
}

/* 分类导航 */
.category-nav {
    background: var(--white);
    border-top: 1px solid var(--border-color);
}

.category-nav .container {
    display: flex;
    align-items: center;
}

.category-all {
    background: var(--jd-red);
    color: var(--white);
    padding: 12px 20px;
    font-size: 14px;
    font-weight: bold;
    min-width: 200px;
}

.category-links {
    display: flex;
    flex: 1;
    gap: 30px;
    padding: 0 20px;
}

.category-links a {
    padding: 15px 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    position: relative;
}

.category-links a:hover,
.category-links a.active {
    color: var(--jd-red);
}

.category-links a.hot {
    color: var(--jd-orange);
}

.tag-hot {
    background: var(--jd-orange);
    color: var(--white);
    font-size: 10px;
    padding: 2px 5px;
    border-radius: 2px;
    margin-left: 5px;
}

/* 主内容区 */
.main-content {
    padding: 20px 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 200px 1fr 220px;
    gap: 10px;
    margin-bottom: 20px;
}

/* 左侧分类 */
.left-category {
    background: var(--white);
    border-radius: var(--radius);
    padding: 10px 0;
}

.category-list {
    padding: 0;
}

.category-item {
    position: relative;
    border-bottom: 1px solid #f4f4f4;
}

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

.category-item > a {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    font-size: 13px;
    transition: var(--transition);
}

.category-item > a:hover {
    background: #f8f8f8;
}

.cat-icon {
    font-size: 18px;
    margin-right: 10px;
}

.cat-name {
    flex: 1;
}

.cat-arrow {
    color: var(--text-muted);
}

.sub-category {
    position: absolute;
    left: 100%;
    top: 0;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-left: none;
    width: 600px;
    padding: 15px 20px;
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    box-shadow: var(--shadow);
    z-index: 100;
}

.category-item:hover .sub-category {
    display: grid;
}

.sub-item a {
    display: block;
    padding: 5px 10px;
    font-size: 12px;
    color: var(--text-light);
    border-radius: 2px;
}

.sub-item a:hover {
    background: #f4f4f4;
    color: var(--jd-red);
}

/* 轮播图 */
.main-slider {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    height: 450px;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    text-align: center;
    color: var(--white);
}

.slide-content h2 {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.slide-content p {
    font-size: 24px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.slide-btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--white);
    color: var(--jd-red);
    font-size: 18px;
    font-weight: bold;
    border-radius: 30px;
    transition: var(--transition);
}

.slide-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

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

.slider-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dots .dot.active {
    background: var(--white);
    width: 30px;
    border-radius: 5px;
}

/* 右侧广告 */
.right-ads {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ad-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px 15px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.ad-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.ad-icon {
    font-size: 36px;
    margin-bottom: 10px;
}

.ad-card h4 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 5px;
}

.ad-card p {
    font-size: 12px;
    color: var(--text-muted);
}

.ad-tag {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--jd-red);
    color: var(--white);
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 2px;
}

/* 京东天天惊喜横幅 */
.jd-promo-banner {
    background: linear-gradient(90deg, #ff6b00, #ff8c00);
    border-radius: var(--radius);
    padding: 15px 20px;
    margin: 20px 0;
}

.promo-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--white);
}

.promo-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.promo-logo {
    background: var(--white);
    color: #ff6b00;
    font-size: 24px;
    font-weight: bold;
    padding: 5px 10px;
    border-radius: 4px;
}

.promo-title {
    font-size: 24px;
    font-weight: bold;
}

.promo-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.promo-btn {
    background: var(--white);
    color: #ff6b00;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: bold;
}

/* 服务栏 */
.service-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
    margin: 30px 0;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.service-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.service-icon {
    font-size: 32px;
}

.service-text strong {
    display: block;
    font-size: 14px;
    color: var(--text-color);
}

.service-text p {
    font-size: 12px;
    color: var(--text-muted);
}

/* 秒杀专区 */
.seckill-section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 30px;
}

.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.section-header h3 {
    font-size: 24px;
    color: var(--text-color);
    margin-right: 30px;
}

.section-header .more {
    margin-left: auto;
    color: var(--text-light);
    font-size: 14px;
}

.countdown {
    display: flex;
    align-items: center;
    gap: 10px;
}

.countdown .label {
    font-size: 14px;
    color: var(--text-light);
}

.countdown .time {
    background: var(--text-color);
    color: var(--white);
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 16px;
    font-weight: bold;
}

.seckill-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.seckill-card {
    background: linear-gradient(135deg, #fff, #f8f8f8);
    border-radius: var(--radius);
    padding: 15px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.seckill-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.seckill-image {
    width: 100%;
    height: 140px;
    background: #f4f4f4;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    margin-bottom: 10px;
}

.seckill-title {
    font-size: 12px;
    color: var(--text-color);
    line-height: 1.4;
    height: 34px;
    overflow: hidden;
    margin-bottom: 10px;
}

.seckill-price {
    font-size: 20px;
    font-weight: bold;
    color: var(--jd-red);
    margin-bottom: 5px;
}

.seckill-price span {
    font-size: 12px;
    font-weight: normal;
    color: var(--text-muted);
    text-decoration: line-through;
}

.seckill-tag {
    display: inline-block;
    background: var(--jd-red);
    color: var(--white);
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
}

/* 商品区块 */
.product-section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 30px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.product-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
    border-color: var(--jd-red);
}

.product-image {
    width: 100%;
    height: 180px;
    background: #f8f8f8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 72px;
    overflow: hidden;
}

.product-info {
    padding: 15px;
}

.product-title {
    font-size: 13px;
    color: var(--text-color);
    line-height: 1.5;
    height: 39px;
    overflow: hidden;
    margin-bottom: 10px;
}

.product-card:hover .product-title {
    color: var(--jd-red);
}

.product-price {
    font-size: 22px;
    font-weight: bold;
    color: var(--jd-red);
    margin-bottom: 8px;
}

.product-price .unit {
    font-size: 12px;
    font-weight: normal;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-muted);
}

.product-tags {
    display: flex;
    gap: 3px;
}

.tag {
    padding: 1px 5px;
    background: #ffeded;
    color: var(--jd-red);
    border-radius: 2px;
    font-size: 10px;
}

/* 品牌专区 */
.brand-section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 30px;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.brand-card {
    height: 60px;
    background: #f8f8f8;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.brand-card:hover {
    border-color: var(--jd-red);
    color: var(--jd-red);
    box-shadow: var(--shadow);
}

/* 底部 */
.footer {
    background: #f4f4f4;
    padding: 40px 0 20px;
    margin-top: 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 20px;
}

.footer-section a {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.footer-section a:hover {
    color: var(--jd-red);
}

.footer-section.contact p {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
}

/* 购物车侧边栏 */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    height: 100%;
    background: var(--white);
    box-shadow: -5px 0 30px rgba(0,0,0,0.2);
    z-index: 2000;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.cart-header h3 {
    font-size: 18px;
}

.close-cart {
    background: none;
    border: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-muted);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.cart-item {
    display: flex;
    gap: 12px;
    padding: 15px 0;
    border-bottom: 1px solid #f4f4f4;
}

.cart-item-image {
    width: 60px;
    height: 60px;
    background: #f4f4f4;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.cart-item-info {
    flex: 1;
}

.cart-item-title {
    font-size: 12px;
    margin-bottom: 8px;
    line-height: 1.4;
}

.cart-item-price {
    font-size: 14px;
    font-weight: bold;
    color: var(--jd-red);
}

.cart-item-qty {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.qty-btn {
    width: 24px;
    height: 24px;
    border: 1px solid var(--border-color);
    background: var(--white);
    border-radius: var(--radius);
    cursor: pointer;
}

.cart-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
}

.total-price {
    color: var(--jd-red);
}

.btn-checkout {
    width: 100%;
    padding: 15px;
    background: var(--jd-red);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

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

/* 弹窗 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.modal.open {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-muted);
    z-index: 10;
}

.modal-body {
    padding: 40px;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2500;
    display: none;
}

.overlay.open {
    display: block;
}

/* 响应式 */
@media (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 180px 1fr 180px;
    }
    
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .seckill-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 992px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .left-category,
    .right-ads {
        display: none;
    }
    
    .main-slider {
        height: 350px;
    }
    
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .service-bar {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .search-bar {
        order: 3;
        max-width: 100%;
        margin-top: 15px;
    }
    
    .header-service {
        display: none;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .brand-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}