/* 糖心vlog - 主样式表 */
/* 品牌：糖心vlog | 域名：fhposj.cn */

:root {
    --primary-color: #FF6B9D;
    --secondary-color: #FF8A65;
    --accent-color: #E91E63;
    --dark-bg: #1a1a2e;
    --light-bg: #f8f9fa;
    --text-dark: #2d3436;
    --text-light: #636e72;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #FF6B9D 0%, #FF8A65 100%);
    --shadow-light: 0 2px 15px rgba(0,0,0,0.08);
    --shadow-medium: 0 5px 25px rgba(0,0,0,0.12);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

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

/* 头部导航 */
.header {
    background: var(--white);
    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;
    gap: 10px;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 8px 0;
    position: relative;
}

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

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

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

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

.search-container {
    display: flex;
    justify-content: center;
}

.search-box {
    display: flex;
    max-width: 600px;
    width: 100%;
    background: var(--white);
    border-radius: 50px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.search-box input {
    flex: 1;
    padding: 12px 25px;
    border: none;
    outline: none;
    font-size: 1rem;
}

.search-box button {
    padding: 12px 30px;
    background: var(--gradient-primary);
    border: none;
    color: var(--white);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover {
    opacity: 0.9;
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, rgba(255,107,157,0.1) 0%, rgba(255,138,101,0.1) 100%);
    padding: 60px 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-text h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-text h1 .brand {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
}

.btn {
    display: inline-block;
    padding: 14px 35px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
}

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

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

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

/* 视频卡片区域 */
.section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

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

.video-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

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

.video-thumbnail {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.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(255,255,255,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid var(--primary-color);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: var(--white);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.video-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--primary-color);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    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: 0.85rem;
}

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

.video-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 分类标签 */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 25px;
    background: var(--light-bg);
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.category-tab:hover,
.category-tab.active {
    background: var(--gradient-primary);
    color: var(--white);
}

/* 专家展示 */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.expert-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-light);
    display: flex;
    gap: 20px;
    transition: var(--transition);
}

.expert-card:hover {
    box-shadow: var(--shadow-medium);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.expert-title {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.expert-credentials {
    color: var(--secondary-color);
    font-size: 0.8rem;
    margin-bottom: 10px;
    font-weight: 500;
}

.expert-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.expert-actions {
    display: flex;
    gap: 10px;
}

.expert-actions .btn {
    padding: 8px 20px;
    font-size: 0.85rem;
}

/* 特色功能 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 35px 25px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 用户评价 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-light);
}

.testimonial-content {
    font-size: 1rem;
    color: var(--text-dark);
    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: var(--white);
    font-weight: 600;
}

.testimonial-name {
    font-weight: 600;
}

.testimonial-role {
    color: var(--text-light);
    font-size: 0.85rem;
}

.stars {
    color: #ffc107;
    margin-bottom: 15px;
}

/* 合作品牌 */
.partners-section {
    background: var(--light-bg);
}

.partners-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;
}

.partner-logo {
    opacity: 0.6;
    transition: var(--transition);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
}

.partner-logo:hover {
    opacity: 1;
    color: var(--primary-color);
}

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

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

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 25px 20px;
    color: var(--text-light);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question::after {
    content: '-';
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: var(--white);
    font-size: 1.5rem;
}

.contact-card h3 {
    margin-bottom: 10px;
}

.contact-card p {
    color: var(--text-light);
}

/* 二维码区域 */
.qrcode-section {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.qrcode-item {
    text-align: center;
}

.qrcode-item img {
    width: 150px;
    height: 150px;
    border-radius: var(--border-radius);
    margin-bottom: 10px;
}

.qrcode-item p {
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo-text {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
}

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

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

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

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255,255,255,0.6);
}

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

/* 面包屑导航 */
.breadcrumb {
    padding: 15px 0;
    background: var(--light-bg);
}

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

.breadcrumb-list li::after {
    content: '/';
    margin-left: 10px;
    color: var(--text-light);
}

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

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

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

.breadcrumb-list .current {
    color: var(--primary-color);
    font-weight: 500;
}

/* 页面Banner */
.page-banner {
    background: linear-gradient(135deg, rgba(255,107,157,0.9) 0%, rgba(255,138,101,0.9) 100%);
    padding: 60px 0;
    text-align: center;
    color: var(--white);
}

.page-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-banner p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .nav-menu {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .experts-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .expert-card {
        flex-direction: column;
        text-align: center;
    }
    
    .expert-avatar {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 1.6rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .category-tabs {
        gap: 10px;
    }
    
    .category-tab {
        padding: 8px 18px;
        font-size: 0.9rem;
    }
}

/* 懒加载占位 */
.lazy-load {
    background: var(--light-bg);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
}

@media (max-width: 992px) {
    .mobile-menu-btn {
        display: flex;
    }
}