/* 成都嘉美地毯网站 - 灰色系商务风格 */
/* 主色调: 深灰#2C3E50 浅灰#ECF0F1 蓝色点缀#3498DB */

:root {
    /* 主色调 */
    --primary-color: #2C3E50;
    --secondary-color: #3498DB;
    --accent-color: #E74C3C;
    
    /* 中性色调 */
    --light-gray: #ECF0F1;
    --medium-gray: #BDC3C7;
    --dark-gray: #7F8C8D;
    
    /* 文本颜色 */
    --text-dark: #2C3E50;
    --text-light: #FFFFFF;
    --text-muted: #95A5A6;
    
    /* 背景颜色 */
    --bg-light: #FFFFFF;
    --bg-gray: #F8F9FA;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.1);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* 排版工具类 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

/* 按钮样式 */
.btn-primary,
.btn-secondary,
.btn-link {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--text-light);
    border: 2px solid var(--secondary-color);
}

.btn-primary:hover {
    background-color: #2980B9;
    border-color: #2980B9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--text-light);
    transform: translateY(-2px);
}

.btn-link {
    color: var(--secondary-color);
    padding: 8px 0;
    font-weight: 500;
}

.btn-link:hover {
    color: var(--primary-color);
}
/* 导航栏 */
.navbar {
    background-color: var(--bg-light);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-sm);
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.logo p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-menu a.active,
.nav-menu a:hover {
    color: var(--secondary-color);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--secondary-color);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}
/* 首页大图 */
.hero {
    background: linear-gradient(rgba(44, 62, 80, 0.9), rgba(44, 62, 80, 0.8)), 
                url('../images/hero-bg.jpg') center/cover no-repeat;
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}
/* 产品展示 */
.featured-products {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-gray);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.product-card {
    background-color: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
}

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

.product-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.product-icon i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.product-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.product-card p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    min-height: 60px;
}
/* 公司优势 */
.advantages {
    padding: var(--spacing-xl) 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.advantage-card {
    text-align: center;
    padding: var(--spacing-lg);
}

.advantage-card i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
}

.advantage-card h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* 联系我们预览 */
.contact-preview {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-gray);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-item {
    text-align: center;
    padding: var(--spacing-md);
}

.contact-item i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.contact-item h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.contact-preview .btn-primary {
    display: block;
    width: 200px;
    margin: 0 auto;
    text-align: center;
}
/* 底部信息 */
.footer {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.7;
}

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

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

.footer-section a {
    color: var(--text-light);
    opacity: 0.8;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--light-gray);
}

.copyright {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-light);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn-primary,
    .hero-buttons .btn-secondary {
        width: 100%;
        max-width: 300px;
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .container {
        padding: 0 var(--spacing-xs);
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-card,
.advantage-card,
.contact-item {
    animation: fadeInUp 0.6s ease forwards;
}

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }

.advantage-card:nth-child(1) { animation-delay: 0.1s; }
.advantage-card:nth-child(2) { animation-delay: 0.2s; }
.advantage-card:nth-child(3) { animation-delay: 0.3s; }
.advantage-card:nth-child(4) { animation-delay: 0.4s; }

/* Hero区域优化样式 */
.hero {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    text-align: center;
    padding: 120px 20px;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 10px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.6;
    opacity: 0.85;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.btn-primary {
    background-color: #007bff;
    color: white;
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background-color: white;
    color: #007bff;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero {
        padding: 80px 20px;
        min-height: 400px;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* Banner样式 - 用于产品、关于、联系页面 */
.page-banner {
    position: relative;
    height: 400px;
    overflow: hidden;
    margin-bottom: 50px;
}

.banner-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.banner-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7);
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 100%);
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 20px;
    color: white;
    text-align: center;
}

.banner-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.banner-description {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.6;
    opacity: 0.9;
}

.banner-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.banner-actions .btn {
    background-color: #007bff;
    color: white;
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
}

.banner-actions .btn:hover {
    background-color: #0056b3;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .page-banner {
        height: 300px;
    }
    
    .banner-title {
        font-size: 2.5rem;
    }
    
    .banner-content {
        padding: 60px 20px;
    }
    
    .banner-actions {
        flex-direction: column;
        align-items: center;
    }
}