/* 晟纭贸易企业官网 - 主样式表 */
/* 传统中式风格设计 */

/* Tailwind CSS CDN */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* 自定义字体 */
@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=ZCOOL+XiaoWei&family=Noto+Sans+SC:wght@400;600;700&display=swap');

/* CSS 变量定义 */
:root {
    /* 主色调 - 传统中国红、金色、墨色 */
    --primary-red: #8B0000;
    --primary-crimson: #C41E3A;
    --primary-gold: #D4AF37;
    
    /* 背景色 */
    --bg-cream: #FFF8F0;
    --bg-white: #FFFFFF;
    --bg-warm: #F5F0E8;
    
    /* 文本色 */
    --text-dark: #333333;
    --text-gray: #666666;
    --text-white: #FFFFFF;
    
    /* 功能色 */
    --functional-red: #8B0000;
    --functional-gold: #D4AF37;
    --functional-dark: #333333;
    
    /* 字体 */
    --font-calligraphy: 'Ma Shan Zheng', 'ZCOOL XiaoWei', cursive;
    --font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: var(--bg-cream);
    line-height: 1.6;
}

/* 传统中式装饰元素 */
.chinese-pattern {
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d4af37' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(139, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background-color: rgba(139, 0, 0, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-white);
}

.nav-logo img {
    height: 50px;
    width: auto;
}

.nav-logo-text {
    font-family: var(--font-calligraphy);
    font-size: 28px;
    color: var(--text-white);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-white);
    font-size: 16px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-gold);
    background-color: rgba(212, 175, 55, 0.1);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 80%;
}

/* 汉堡菜单按钮 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-white);
    transition: all 0.3s ease;
}

/* 首页横幅区域 */
.hero-banner {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, var(--primary-red) 0%, #6B0000 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23d4af37' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    color: var(--text-white);
    z-index: 1;
    padding: 0 var(--spacing-sm);
}

.hero-title {
    font-family: var(--font-calligraphy);
    font-size: 72px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-gold);
    animation: fadeInUp 1s ease 0.3s;
    animation-fill-mode: both;
}

.hero-description {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.6s;
    animation-fill-mode: both;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background-color: var(--primary-gold);
    color: var(--text-dark);
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-gold);
    animation: fadeInUp 1s ease 0.9s;
    animation-fill-mode: both;
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-gold);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

/* 内容区域通用样式 */
.section {
    padding: var(--spacing-xl) var(--spacing-sm);
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-calligraphy);
    font-size: 48px;
    color: var(--primary-red);
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--primary-gold);
    margin: 16px auto 0;
}

.section-subtitle {
    text-align: center;
    color: var(--text-gray);
    font-size: 18px;
    margin-bottom: var(--spacing-lg);
}

/* 关于公司区域 */
.about-section {
    background-color: var(--bg-white);
    padding: var(--spacing-xl) var(--spacing-sm);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.about-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-gray);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
}

.about-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 产品展示区域 */
.products-section {
    background-color: var(--bg-warm);
    padding: var(--spacing-xl) var(--spacing-sm);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background-color: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: var(--spacing-sm);
}

.product-name {
    font-family: var(--font-calligraphy);
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.product-category {
    font-size: 14px;
    color: var(--text-gray);
}

/* 联系方式区域 */
.contact-section {
    background-color: var(--bg-white);
    padding: var(--spacing-xl) var(--spacing-sm);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--bg-cream);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    font-size: 48px;
    color: var(--primary-red);
    margin-bottom: var(--spacing-sm);
}

.contact-title {
    font-family: var(--font-calligraphy);
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.contact-info {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 页脚样式 */
.footer {
    background-color: var(--primary-red);
    color: var(--text-white);
    padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-sm);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.footer-section h3 {
    font-family: var(--font-calligraphy);
    font-size: 24px;
    color: var(--primary-gold);
    margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
    color: var(--text-white);
    font-size: 14px;
    line-height: 1.8;
    text-decoration: none;
}

.footer-section a:hover {
    color: var(--primary-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* 灯箱样式 */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: var(--text-white);
    font-size: 40px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.lightbox-close:hover {
    color: var(--primary-gold);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-white);
    font-size: 50px;
    cursor: pointer;
    padding: 0 20px;
    transition: color 0.3s ease;
    user-select: none;
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    color: var(--primary-gold);
}

/* 动画 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background-color: rgba(139, 0, 0, 0.98);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        padding: var(--spacing-md) 0;
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: var(--spacing-xs) 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }
    
    .section {
        padding: var(--spacing-lg) var(--spacing-xs);
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
}