/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* 统一顶部导航栏样式 */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: #fff;
    border-bottom: 1px solid #e8e8e8;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.nav-left {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #333;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
}

.nav-left:hover {
    color: #ff6b35;
}

.nav-center {
    flex: 1;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: #333;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 20px;
}

.nav-right {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-decoration: none;
}

.nav-right img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.nav-right:hover img {
    opacity: 0.7;
}

/* 为有导航栏的页面调整内容区域的上边距 */
.container.has-nav {
    padding-top: 50px;
}

.my-container.has-nav {
    padding-top: 50px;
}

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

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

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.logo span {
    font-size: 18px;
    font-weight: bold;
    color: #e91e63;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover,
.nav a.active {
    color: #e91e63;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 3px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: 0.3s;
}

/* 主要内容区域 */
main {
    margin-top: 70px;
}

/* 轮播区域 */
.hero {
    position: relative;
    height: 400px;
    overflow: hidden;
    margin-top: 70px;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    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;
    top: 50%;
    left: 50px;
    transform: translateY(-50%);
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.slide-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.slide-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #e91e63, #f06292);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(233, 30, 99, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233, 30, 99, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #e91e63;
    padding: 12px 30px;
    border: 2px solid #e91e63;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: #e91e63;
    color: white;
}

/* 功能导航 */
.features {
    padding: 60px 0;
    background: #f8f9fa;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.feature-item h3 {
    color: #333;
    margin-bottom: 10px;
}

.feature-item p {
    color: #666;
}

/* 产品区域 */
.products {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
}

/* 产品分类 */
.product-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.category-btn {
    padding: 10px 25px;
    border: 2px solid #e91e63;
    background: transparent;
    color: #e91e63;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    font-weight: 500;
}

.category-btn.active,
.category-btn:hover {
    background: #e91e63;
    color: white;
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 20px;
}

.product-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.current-price {
    font-size: 1.3rem;
    color: #e91e63;
    font-weight: bold;
}

.original-price {
    font-size: 1rem;
    color: #999;
    text-decoration: line-through;
}

.product-labels {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.product-label {
    background: #f0f0f0;
    color: #666;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
}

/* 加载更多 */
.load-more {
    text-align: center;
    margin-top: 40px;
}

/* 品质保证 */
.quality {
    padding: 80px 0;
    background: linear-gradient(135deg, #fce4ec, #f8bbd9);
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.quality-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.quality-icon {
    width: 35px;
    height: 35px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 15px;
    /* background-color: rgba(255, 107, 53, 0.1); */
    border-radius: 50%;
}

.quality-icon img {
    width: 30px;
    height: 30px;
}

.quality-item h3 {
    color: #333;
    margin-bottom: 10px;
}

.quality-item p {
    font-size: 14px;
    color: #666;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background: #f9f9f9;
}

.about-content {
    /* Grid布局已移除，使用默认的block布局 */
}

.about-text h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 2rem;
}

.about-text h3 {
    color: #e91e63;
    margin: 30px 0 15px 0;
    font-size: 1.3rem;
}

.about-text p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-text ul {
    list-style: none;
    padding-left: 0;
}

.about-text li {
    color: #666;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.about-text li:before {
    content: "✓";
    color: #e91e63;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.about-text blockquote {
    background: #e91e63;
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin: 30px 0;
    font-style: italic;
    position: relative;
}

.about-image img {
    width: 100%;
    max-width: 300px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 联系我们 */
.contact {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.contact-item h3 {
    color: #333;
    margin-bottom: 15px;
}

.contact-item p {
    color: #666;
}

.contact-item a {
    color: #e91e63;
    text-decoration: none;
    font-weight: 500;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3,
.footer-section h4 {
    color: #e91e63;
    margin-bottom: 20px;
}

.footer-section p {
    color: #ccc;
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #e91e63;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-link {
    background: #e91e63;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    transition: background 0.3s;
}

.social-link:hover {
    background: #c2185b;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #999;
    margin-bottom: 5px;
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #e91e63;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(233, 30, 99, 0.3);
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233, 30, 99, 0.4);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1002;
}

.close:hover {
    color: #000;
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding: 30px;
}

.product-images img {
    width: 100%;
    border-radius: 10px;
}

.product-info h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 15px;
}

.product-description {
    margin: 20px 0;
}

.product-description h4 {
    color: #333;
    margin-bottom: 15px;
}

.product-features {
    margin: 15px 0;
}

.feature {
    margin-bottom: 10px;
    color: #666;
}

.product-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.product-actions button {
    flex: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        height: 300px;
    }
    
    .slide-content {
        left: 20px;
        right: 20px;
    }
    
    .slide-content h2 {
        font-size: 1.8rem;
    }
    
    .slide-content p {
        font-size: 1rem;
    }
    
    .feature-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .quality-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .about-content {
        /* 移动端样式，Grid布局已移除 */
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .modal-body {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 20px;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-text h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 250px;
    }
    
    .slide-content h2 {
        font-size: 1.5rem;
    }
    
    .slide-content p {
        font-size: 0.9rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 50px;
    color: #666;
}

.loading-spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #e91e63;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin-right: 15px;
}

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

/* 空状态 */
.empty {
    text-align: center;
    padding: 50px;
    color: #999;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* Auth Page Styles (Login & Register) */
.auth-wrapper {
    background-color: #f4f6f8;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.auth-header {
    margin-bottom: 30px;
}

.auth-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid #f0f0f0;
}

.auth-title {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.auth-subtitle {
    font-size: 14px;
    color: #888;
}

.auth-form .form-group {
    margin-bottom: 20px;
    text-align: left;
}

.auth-form .form-control {
    width: 100%;
    height: 50px;
    padding: 0 15px;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.auth-form .form-control:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}

.auth-btn {
    width: 100%;
    height: 50px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.auth-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.25);
}

.auth-footer {
    margin-top: 25px;
    font-size: 14px;
    color: #888;
}

.auth-footer a {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.auth-message {
    margin-bottom: 15px;
    padding: 10px;
    border-radius: 6px;
    font-size: 14px;
}

.auth-message.error {
    background-color: #f8d7da;
    color: #721c24;
}

/* End Auth Page Styles */