/* 每日大赛吃瓜主题反差主题 - 视频平台样式表 */
/* 027fkbd.com */

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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f8f9fa;
    --white: #fff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 20px rgba(0,0,0,0.15);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --radius: 12px;
}

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-color);
    background: var(--bg-color);
}

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

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

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

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.logo-text {
    font-size: 1.2rem;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 30px;
}

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

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

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

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

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

.search-form {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-color);
    border-radius: 25px;
    overflow: hidden;
    border: 2px solid transparent;
    transition: border-color 0.3s;
}

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

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    font-size: 1rem;
    outline: none;
}

.search-btn {
    padding: 12px 25px;
    background: var(--gradient);
    border: none;
    color: var(--white);
    cursor: pointer;
    font-size: 1rem;
    transition: opacity 0.3s;
}

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

/* 面包屑 */
.breadcrumb {
    padding: 15px 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

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

.breadcrumb span {
    margin: 0 8px;
}

/* Hero区域 */
.hero {
    background: var(--gradient);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

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

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 区块标题 */
.section {
    padding: 50px 0;
}

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

.section-title h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

.section-title p {
    color: var(--text-light);
    margin-top: 15px;
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

/* 视频卡片 */
.video-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

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

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

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

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.8);
    color: var(--white);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

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

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid var(--primary-color);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-card:hover .video-play-btn {
    transform: translate(-50%, -50%) scale(1);
}

.video-info {
    padding: 15px;
}

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

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

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

.video-date {
    font-size: 0.8rem;
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
    padding: 2px 8px;
    border-radius: 10px;
    margin-top: 8px;
    display: inline-block;
}

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

.category-tag {
    padding: 8px 20px;
    background: var(--white);
    border: 2px solid #eee;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.category-tag:hover,
.category-tag.active {
    background: var(--gradient);
    color: var(--white);
    border-color: transparent;
}

/* 模块卡片 */
.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.module-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s;
}

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

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

.module-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.module-card p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 专家卡片 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 25px;
}

.expert-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    text-align: center;
    padding: 25px;
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid var(--primary-color);
}

.expert-card h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.expert-title {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.expert-cert {
    display: inline-block;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-bottom: 10px;
}

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

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

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

.faq-question {
    padding: 20px;
    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-item.active .faq-question::after {
    content: '-';
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

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

.review-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

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

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

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

.review-stars {
    color: #ffc107;
}

.review-content {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 合作伙伴 */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    align-items: center;
}

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

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

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.contact-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-item img {
    max-width: 150px;
    border-radius: 8px;
}

.contact-item p {
    margin-top: 10px;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 页脚 */
.footer {
    background: #1a1a2e;
    color: #ccc;
    padding: 50px 0 20px;
}

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

.footer-col h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

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

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

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    font-size: 0.9rem;
}

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

.footer-qrcodes img {
    width: 100px;
    border-radius: 8px;
}

/* 伪视频播放器 */
.video-player-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.video-player-overlay.active {
    display: flex;
}

.video-player {
    width: 90%;
    max-width: 900px;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.video-player-screen {
    position: relative;
    padding-top: 56.25%;
    background: #111;
}

.video-player-screen img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-player-controls {
    background: #222;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.player-btn {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
}

.player-progress {
    flex: 1;
    height: 5px;
    background: #444;
    border-radius: 3px;
    cursor: pointer;
    position: relative;
}

.player-progress-bar {
    height: 100%;
    background: var(--primary-color);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s;
}

.player-time {
    color: #999;
    font-size: 0.9rem;
    min-width: 100px;
    text-align: center;
}

.player-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.2);
    border: none;
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
}

/* 直播标签 */
.live-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: #ff4444;
    color: var(--white);
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 步骤卡片 */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.step-card {
    background: var(--white);
    padding: 30px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 0 auto 15px;
}

/* 响应式 */
@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
    }
    
    .nav {
        width: 100%;
        justify-content: center;
        margin-top: 15px;
        gap: 15px;
        flex-wrap: wrap;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section {
        padding: 30px 0;
    }
    
    .section-title h2 {
        font-size: 1.4rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .nav {
        gap: 10px;
        font-size: 0.9rem;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}