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

:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-hover: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #999999;
    --accent-color: #ff004f;
    --accent-cyan: #00f2ea;
    --border-color: #333333;
}

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

/* 头部导航 */
#common-header {
    /* 移除 position: fixed; 和相关定位属性 */
    background-color: var(--bg-secondary);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    /* 添加 margin-bottom 以提供页面内容间距 */
    margin-bottom: 20px;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo img {
    width: 100px;
    height: 50px;
    margin: 0 auto;
}

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--bg-primary);
    border-radius: 24px;
    padding: 8px 16px;
    width: 300px;
    border: 1px solid var(--border-color);
    transition: border-color 0.3s;
}

.search-box:focus-within {
    border-color: var(--accent-cyan);
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14px;
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.search-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 0;
}

.search-btn:hover {
    color: var(--text-primary);
}

/* 分类导航 */
.category-nav {
    display: flex;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

.category-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 12px 0;
    flex: 1;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-list::-webkit-scrollbar {
    display: none;
}

.category-item {
    padding: 8px 20px;
    background-color: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 20px;
    white-space: nowrap;
    font-size: 14px;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.category-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.category-item.active {
    background-color: var(--accent-color);
    color: var(--text-primary);
    border-color: var(--accent-color);
}

.nav-arrow {
    background-color: var(--bg-hover);
    border: none;
    color: var(--text-primary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    flex-shrink: 0;
}

.nav-arrow:hover {
    background-color: var(--bg-primary);
}

.nav-prev {
    margin-right: 8px;
}

.nav-next {
    margin-left: 8px;
}

/* 主内容区 */
.main-content {
    margin-top: 0;
    max-width: 1740px;
    margin-left: auto;
    margin-right: auto;
    /*padding: 20px;*/
}

/* 面包屑 */
.breadcrumb {
    padding: 20px 0;
    font-size: 14px;
    color: var(--text-secondary);
    /*margin-bottom: 20px;*/
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.breadcrumb span {
    margin: 0 8px;
}

.video-section {
    margin-bottom: 20px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

/* 视频网格 */
.video-grid {
    font-size: 0;
    margin-right: -20px;
}

.video-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid transparent;
    width: calc(16.666% - 17px);
    display: inline-block;
    margin: 0 20px 20px 0;
    font-size: 14px;
}

.video-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-cyan);
    box-shadow: 0 8px 16px rgba(0, 242, 234, 0.1);
}

.video-thumbnail {
    position: relative;
    height: 0;
    padding-top: 140%; /* 140% 的宽高比，约为 1.4:1 */
    background-color: var(--bg-primary);
    overflow: hidden;
    border-radius: 5px;
}

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

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0, 0, 0, 0.8);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-primary);
}

.video-stats {
    position: absolute;
    bottom: 8px;
    left: 8px;
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--text-primary);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
    background-color: rgba(0, 0, 0, 0.6);
    padding: 4px 8px;
    border-radius: 4px;
}

.video-info {
    padding: 12px;
}

.video-title {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    height: 2.8em;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.video-author {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.video-author:hover {
    color: var(--text-primary);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 40px 0;
}

.pagination button,
.pagination a {
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 14px;
}

.pagination button:hover,
.pagination a:hover {
    background-color: var(--bg-hover);
    border-color: var(--accent-cyan);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination button:disabled:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.pagination .active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

/* 页脚 */
#common-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: 20px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

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

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 12px;
}

.footer-bottom p {
    margin: 4px 0;
}

/* 视频播放器页面 */
.player-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* 在现有.video-player样式后添加以下代码 */
.video-player {
    position: relative;
    width: 100%;
    background-color: #000;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    /* 使用padding-top实现16:9比例 */
    padding-top: 56.25%; /* 16:9 比例 = 9/16 = 0.5625 */
}

.video-player video-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 移除默认的宽高设置 */
    max-width: 100%;
    max-height: 100%;
}

/* 添加一个容器来确保视频居中 */
.video-player-container {
    position: relative;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
}

/* 确保Video.js控件正确显示 */
.video-js .vjs-control-bar {
    background: linear-gradient(transparent, rgba(0,0,0,0.5)) !important;
}


.video-details {
    background-color: var(--bg-secondary);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.video-details h1 {
    font-size: 24px;
    margin-bottom: 16px;
}

.video-details-meta {
    display: flex;
    gap: 20px;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.video-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

.related-videos {
    margin-top: 20px;
}

.related-videos h2 {
    font-size: 20px;
    margin-bottom: 20px;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 120px;
    height: 120px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.empty-state p {
    font-size: 14px;
}

.more-btn {
    display: inline-block;
    padding: 6px 12px;
    background-color: #f8f9fa;
    color: #007bff;
    text-decoration: none;
    border: 1px solid #007bff;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.more-btn:hover {
    background-color: #007bff;
    color: white;
    text-decoration: none;
}


/* 响应式断点 */
@media (max-width: 1789px) {
    .main-content {
        max-width: 1520px;
    }
}

@media (max-width: 1549px) {
    .main-content {
        max-width: 1240px;
    }

    .video-card {
        width: 190px;
    }
}

@media (max-width: 1329px) {
    .main-content {
        max-width: 1150px;
    }

    .video-card {
        width: 175px;
    }
}

@media (max-width: 1239px) {
    .main-content {
        max-width: 100%;
        padding: 0 30px;
    }

    .video-card {
        width: calc(25% - 20px);
    }
}

@media (max-width: 1039px) {
    .video-card {
        width: calc(33.33% - 20px);
    }
}

@media (max-width: 899px) {
    .main-content {
        padding: 0 20px;
    }

    .video-card {
        width: calc(33.33% - 12px);
        margin: 0 12px 15px 0;
    }

    .video-info {
        padding: 8px;
    }
}

@media (max-width: 559px) {
    .main-content {
        padding: 0 15px;
    }

    .video-card {
        width: calc(50% - 10px);
        margin: 0 10px 12px 0;
    }

    .video-grid {
        margin-right: -10px;
    }
}

/* 在现有分页样式后添加以下响应式代码 */
@media (max-width: 768px) {
    .pagination {
        gap: 4px;
        margin: 20px 0;
        flex-wrap: wrap;
    }

    .pagination button,
    .pagination a {
        padding: 6px 10px;
        font-size: 12px;
        min-width: 30px;
    }
}

@media (max-width: 480px) {
    .pagination {
        gap: 2px;
        margin: 15px 0;
    }

    .pagination button,
    .pagination a {
        padding: 5px 8px;
        font-size: 11px;
        min-width: 26px;
    }

    .pagination .ellipsis {
        font-size: 11px;
        padding: 5px 2px;
    }
}

/* 基础视频播放器样式 */
.video-player {
    position: relative;
    width: 100%;
    background-color: #000;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    padding-top: 56.25%; /* 16:9 比例 */
}

.video-player video-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
}

/* 桌面端大屏幕 - 保持 1280x720 尺寸 */
@media (min-width: 1280px) {
    .player-container {
        max-width: 1280px;
        margin: 0 auto;
    }

    .video-player {
        width: 1280px;
        height: 720px;
        padding-top: 0;
        margin: 0 auto;
    }

    .video-player video-js {
        position: relative;
        width: 1280px;
        height: 720px;
    }
}

/* 移动端适配 */
@media (max-width: 1279px) {
    .player-container {
        max-width: 100%;
        padding: 0 10px;
    }

    .video-player {
        width: 100%;
        padding-top: 56.25%; /* 保持 16:9 比例 */
    }

    .video-player video-js {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
}

/* 小屏幕设备优化 */
@media (max-width: 768px) {
    .video-player {
        border-radius: 8px;
    }

    .video-details {
        padding: 15px;
    }
}