/* 糖心vlog - 主样式文件 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 头部样式 */
header {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: rgba(0,0,0,0.1);
    padding: 10px 0;
    font-size: 14px;
    color: #fff;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 50px;
    margin-right: 15px;
}

.logo-text {
    color: #fff;
    font-size: 24px;
    font-weight: bold;
}

/* 导航样式 */
nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 8px 15px;
    border-radius: 5px;
}

nav a:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* 搜索框样式 */
.search-container {
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.search-box {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 15px 60px 15px 20px;
    border: 2px solid #ff6b35;
    border-radius: 30px;
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
}

.search-box input:focus {
    box-shadow: 0 0 15px rgba(255,107,53,0.3);
}

.search-box button {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    border: none;
    padding: 10px 25px;
    border-radius: 25px;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-box button:hover {
    transform: translateY(-50%) scale(1.05);
}

/* 主内容区域 */
main {
    padding: 40px 0;
}

/* 视频卡片样式 */
.video-section {
    margin-bottom: 50px;
}

.section-title {
    font-size: 28px;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 3px solid #ff6b35;
    display: flex;
    align-items: center;
}

.section-title::before {
    content: "▶";
    color: #ff6b35;
    margin-right: 10px;
    font-size: 24px;
}

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

.video-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    background: #000;
}

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

.video-card:hover .video-thumbnail img {
    transform: scale(1.1);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255,107,53,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.play-button::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 20px solid #fff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #999;
}

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

.stat-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Hero区域 */
.hero-section {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    padding: 60px 0;
    color: #fff;
    text-align: center;
    margin-bottom: 50px;
    border-radius: 15px;
}

.hero-title {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

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

.btn {
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #fff;
    color: #ff6b35;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: #ff6b35;
}

/* 特色区域 */
.features-section {
    margin-bottom: 50px;
}

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

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.feature-desc {
    color: #666;
    font-size: 14px;
}

/* 专家团队 */
.experts-section {
    margin-bottom: 50px;
}

.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.expert-card {
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #fff;
}

.expert-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.expert-title {
    color: #999;
    font-size: 14px;
}

/* 用户评价 */
.testimonials-section {
    margin-bottom: 50px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.testimonial-card {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.testimonial-text {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
    font-style: italic;
}

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

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
}

.author-info {
    flex: 1;
}

.author-name {
    font-weight: 600;
    font-size: 14px;
}

.author-date {
    font-size: 12px;
    color: #999;
}

.rating {
    color: #ffc107;
}

/* 页脚样式 */
footer {
    background: #2c3e50;
    color: #fff;
    padding: 50px 0 20px;
    margin-top: 50px;
}

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

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #ff6b35;
}

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

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

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ff6b35;
}

.qrcode-container {
    display: flex;
    gap: 20px;
}

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

.qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    margin-bottom: 10px;
    background: #fff;
    padding: 5px;
}

.qrcode-label {
    font-size: 14px;
    color: #bdc3c7;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    color: #bdc3c7;
    font-size: 14px;
}

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

.social-link {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #34495e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #ff6b35;
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-main {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 15px 0;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #ff6b35;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 8px;
}