/* 小马拉大车 - 主样式文件 */
/* 影视传媒公司+视频社区 - hrbjiahua.cn */

:root {
    --primary-color: #ff6b9d;
    --secondary-color: #ff8fab;
    --accent-color: #ffc3d0;
    --dark-color: #2d3436;
    --light-color: #f8f9fa;
    --text-color: #333;
    --text-light: #666;
    --gradient-primary: linear-gradient(135deg, #ff6b9d 0%, #ff8fab 100%);
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.15);
    --border-radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color);
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航样式 */
.header {
    background: #fff;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

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

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-left: 10px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    font-size: 16px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

/* 搜索框样式 */
.search-bar {
    background: var(--light-color);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.search-container {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #ddd;
    border-radius: 25px 0 0 25px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary-color);
}

.search-btn {
    padding: 12px 25px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: 0 25px 25px 0;
    font-size: 16px;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.search-btn:hover {
    opacity: 0.9;
}

/* Hero Banner */
.hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 100%);
    display: flex;
    align-items: center;
}

.hero-content {
    color: #fff;
    padding-left: 60px;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-primary {
    display: inline-block;
    padding: 15px 35px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 107, 157, 0.4);
    color: #fff;
}

/* 视频卡片样式 */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--text-light);
    font-size: 16px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.video-card {
    background: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.video-thumbnail {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 107, 157, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-card:hover .play-btn {
    opacity: 1;
}

.play-btn::after {
    content: '';
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent #fff;
    margin-left: 4px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 16px;
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 13px;
}

.video-stats {
    display: flex;
    gap: 15px;
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 专家展示 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}

.expert-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s ease;
}

.expert-card:hover {
    transform: translateY(-5px);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    border: 4px solid var(--accent-color);
}

.expert-card h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.expert-title {
    color: var(--primary-color);
    font-size: 14px;
    margin-bottom: 15px;
}

.expert-desc {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.expert-links {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.expert-links a {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    transition: all 0.3s ease;
}

.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: #fff;
}

/* 功能模块 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-light);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
    color: #fff;
}

/* 用户评价 */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.testimonial-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-light);
}

.testimonial-content {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
}

.testimonial-info h4 {
    font-size: 16px;
    margin-bottom: 3px;
}

.testimonial-info span {
    color: var(--text-light);
    font-size: 13px;
}

/* 合作品牌 */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    align-items: center;
}

.partner-logo {
    height: 50px;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    filter: grayscale(100%);
}

.partner-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.faq-question {
    padding: 20px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding: 0 20px 20px;
    color: var(--text-light);
    line-height: 1.8;
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow-light);
}

.contact-card h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.contact-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
}

.qrcode-img {
    width: 150px;
    height: 150px;
    margin: 15px auto;
    border-radius: 10px;
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: #fff;
    padding: 50px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--accent-color);
}

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

.footer-col li {
    margin-bottom: 10px;
}

.footer-col a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}

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

.footer-logo {
    height: 40px;
    margin-bottom: 15px;
}

.footer-desc {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

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

/* 面包屑 */
.breadcrumb {
    padding: 15px 0;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 10px;
    font-size: 14px;
}

.breadcrumb-list li::after {
    content: '/';
    margin-left: 10px;
    color: #ccc;
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--text-light);
}

.breadcrumb-list span {
    color: var(--primary-color);
}

/* 分类标签 */
.category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.category-tag {
    padding: 8px 20px;
    background: #fff;
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-color);
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
}

.category-tag:hover,
.category-tag.active {
    background: var(--gradient-primary);
    color: #fff;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination a,
.pagination span {
    padding: 10px 15px;
    background: #fff;
    border-radius: 8px;
    font-size: 14px;
    box-shadow: var(--shadow-light);
}

.pagination a:hover,
.pagination .current {
    background: var(--gradient-primary);
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
    }
    
    .nav-menu {
        width: 100%;
        justify-content: center;
        margin-top: 15px;
        gap: 15px;
        flex-wrap: wrap;
    }
    
    .hero {
        height: 350px;
    }
    
    .hero-content {
        padding: 20px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .expert-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .search-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-input,
    .search-btn {
        border-radius: 25px;
        width: 100%;
    }
}

/* 懒加载占位 */
.lazy-load {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 工具提示 */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    background: var(--dark-color);
    color: #fff;
    font-size: 12px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 内页样式 */
.page-header {
    background: var(--gradient-primary);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 16px;
    opacity: 0.9;
}

.content-section {
    padding: 40px 0;
}

.sidebar {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-light);
}

.sidebar h4 {
    font-size: 18px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-color);
}

.sidebar-list {
    list-style: none;
}

.sidebar-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.sidebar-list li:last-child {
    border-bottom: none;
}

/* 工具卡片 */
.tool-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
}

.tool-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: #fff;
    margin-bottom: 20px;
}

.tool-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.tool-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
}

/* 社区帖子 */
.post-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow-light);
    margin-bottom: 20px;
}

.post-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.post-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
}

.post-author h4 {
    font-size: 15px;
    margin-bottom: 3px;
}

.post-author span {
    font-size: 12px;
    color: var(--text-light);
}

.post-content {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 15px;
}

.post-actions {
    display: flex;
    gap: 20px;
    color: var(--text-light);
    font-size: 14px;
}

.post-actions span {
    cursor: pointer;
    transition: color 0.3s ease;
}

.post-actions span:hover {
    color: var(--primary-color);
}