/* ========== CSS变量 ========== */
:root {
    --primary-color: #00a1d6;
    --secondary-color: #fb7299;
    --bg-primary: #ffffff;
    --bg-secondary: #f1f2f3;
    --bg-tertiary: #f4f5f7;
    --text-primary: #18191c;
    --text-secondary: #61666d;
    --text-tertiary: #9499a0;
    --border-color: #e3e5e7;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    --radius: 6px;
    --radius-lg: 12px;
    --sidebar-width: 220px;
    --header-height: 64px;
    --transition: all 0.3s ease;
}

/* 深色主题 */
[data-theme="dark"] {
    --primary-color: #23ade5;
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #2d2d2d;
    --text-primary: #e1e1e1;
    --text-secondary: #a1a1a1;
    --text-tertiary: #717171;
    --border-color: #333333;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* ========== 基础样式 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    transition: var(--transition);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ========== 顶部导航栏 ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    transition: var(--transition);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    font-size: 20px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.menu-toggle:hover {
    background: var(--bg-tertiary);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 32px;
}

.main-nav {
    display: flex;
    gap: 25px;
    margin-left: 30px;
}

.main-nav a {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* 搜索框 */
.header-center {
    flex: 1;
    max-width: 500px;
    margin: 0 20px;
}

.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    height: 40px;
    padding: 0 100px 0 16px;
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}

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

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

.search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 70px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    transition: var(--transition);
}

.search-box input:focus + .search-btn,
.search-btn:hover {
    background: var(--primary-color);
    color: #fff;
}

/* 搜索下拉 */
.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    display: none;
    z-index: 1001;
}

.search-dropdown.show {
    display: block;
}

.search-section {
    padding: 12px 0;
}

.search-section h4 {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 0 15px 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.clear-history {
    cursor: pointer;
    transition: var(--transition);
}

.clear-history:hover {
    color: var(--secondary-color);
}

.history-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 15px;
}

.history-item {
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.history-item:hover {
    background: var(--border-color);
}

.hot-search li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    cursor: pointer;
    transition: var(--transition);
}

.hot-search li:hover {
    background: var(--bg-tertiary);
}

.hot-search .rank {
    width: 20px;
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-tertiary);
}

.hot-search .rank.top {
    color: var(--secondary-color);
}

/* 右侧功能区 */
.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: var(--secondary-color);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
    transition: var(--transition);
}

.upload-btn:hover {
    background: #ff85ad;
}

.nav-icons {
    display: flex;
    gap: 5px;
}

.icon-btn {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-secondary);
    border-radius: 50%;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--bg-tertiary);
}

.badge {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 16px;
    height: 16px;
    background: var(--secondary-color);
    color: #fff;
    font-size: 10px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 用户菜单 */
.user-menu {
    position: relative;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    cursor: pointer;
    transition: var(--transition);
}

.avatar:hover {
    box-shadow: 0 0 0 2px var(--primary-color);
}

.avatar-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 280px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hover);
    padding: 15px 0;
    display: none;
    z-index: 1002;
}

.user-menu:hover .avatar-dropdown {
    display: block;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 15px 15px;
    border-bottom: 1px solid var(--border-color);
}

.user-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.user-info .username {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

.user-info .level {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    border-radius: 3px;
    margin-top: 4px;
}

.user-stats {
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
}

.user-stats div {
    text-align: center;
}

.user-stats span:first-child {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-stats span:last-child {
    font-size: 12px;
    color: var(--text-tertiary);
}

.dropdown-menu li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.dropdown-menu li:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.dropdown-menu li:last-child {
    border-top: 1px solid var(--border-color);
    margin-top: 5px;
    padding-top: 12px;
}

/* ========== 主体布局 ========== */
.main-layout {
    display: flex;
    padding-top: var(--header-height);
    min-height: 100vh;
}

/* ========== 左侧边栏 ========== */
.sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 15px 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar-section {
    margin-bottom: 20px;
    padding: 0 12px;
}

.section-title {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 0 12px 10px;
    font-weight: 500;
}

/* 快捷导航 */
.quick-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.quick-nav i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

/* 关注列表 */
.follow-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.follow-list li:hover {
    background: var(--bg-tertiary);
}

.follow-list img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
}

.follow-list span {
    font-size: 13px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 频道列表 */
.channel-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.channel-list li:hover {
    background: var(--bg-tertiary);
}

.channel-list i {
    width: 20px;
    text-align: center;
}

/* 分区导航 */
.zone-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.zone-list a:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.zone-list i {
    width: 20px;
    text-align: center;
}

/* ========== 主内容区 ========== */
.content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 20px;
    max-width: calc(100vw - var(--sidebar-width));
}

/* 通用部分样式 */
.section {
    margin-bottom: 30px;
}

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

.section-header h2 {
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-header h2 i {
    color: var(--primary-color);
}

.more {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-tertiary);
    transition: var(--transition);
}

.more:hover {
    color: var(--primary-color);
}

.filter-tabs {
    display: flex;
    gap: 15px;
}

.filter-tabs span {
    font-size: 13px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: var(--transition);
}

.filter-tabs span:hover,
.filter-tabs span.active {
    color: var(--primary-color);
}

/* ========== Banner轮播 ========== */
.banner-section {
    margin-bottom: 25px;
}

.carousel {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.carousel-track {
    position: relative;
    height: 300px;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 20px 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff;
}

.banner-info .tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--secondary-color);
    border-radius: 3px;
    font-size: 12px;
    margin-bottom: 8px;
}

.banner-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

.banner-info p {
    font-size: 13px;
    opacity: 0.9;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 60px;
    background: rgba(0,0,0,0.3);
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.carousel:hover .carousel-btn {
    opacity: 1;
}

.carousel-btn:hover {
    background: rgba(0,0,0,0.5);
}

.carousel-btn.prev {
    left: 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.carousel-btn.next {
    right: 0;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.carousel-dots {
    position: absolute;
    bottom: 15px;
    right: 20px;
    display: flex;
    gap: 8px;
}

.carousel-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dots .dot.active {
    background: #fff;
    width: 24px;
    border-radius: 4px;
}

/* ========== 视频网格 ========== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
}

.video-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

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

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

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

.duration {
    position: absolute;
    bottom: 5px;
    right: 5px;
    padding: 2px 6px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 12px;
    border-radius: 3px;
}

.live-badge {
    background: var(--secondary-color);
}

.view-count {
    position: absolute;
    bottom: 5px;
    left: 5px;
    padding: 2px 6px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 12px;
    border-radius: 3px;
}

.view-count i {
    margin-right: 3px;
}

.video-info {
    display: flex;
    gap: 10px;
    padding: 10px;
}

.up-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.video-meta {
    flex: 1;
    min-width: 0;
}

.video-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.up-name {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.video-stats {
    font-size: 12px;
    color: var(--text-tertiary);
    display: flex;
    gap: 10px;
}

.video-stats i {
    margin-right: 3px;
}

/* ========== 直播网格 ========== */
.live-grid {
    grid-template-columns: repeat(4, 1fr);
}

.live .video-title {
    -webkit-line-clamp: 1;
}

/* ========== 热门榜单 ========== */
.hot-rank-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.rank-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--bg-primary);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.rank-item:hover {
    background: var(--bg-tertiary);
}

.rank-num {
    width: 24px;
    text-align: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.rank-num.top {
    color: var(--secondary-color);
    font-size: 20px;
}

.rank-item img {
    width: 120px;
    height: 70px;
    object-fit: cover;
    border-radius: var(--radius);
    flex-shrink: 0;
}

.rank-info {
    flex: 1;
    min-width: 0;
}

.rank-info h4 {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rank-info p {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ========== 番剧网格 ========== */
.bangumi-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.bangumi-card {
    cursor: pointer;
    transition: var(--transition);
}

.bangumi-card:hover {
    transform: translateY(-4px);
}

.bangumi-cover {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 8px;
}

.bangumi-cover img {
    width: 100%;
    aspect-ratio: 2 / 3;
    object-fit: cover;
}

.update-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 5px 8px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: #fff;
    font-size: 11px;
}

.bangumi-card h4 {
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bangumi-card p {
    font-size: 12px;
    color: var(--text-tertiary);
}

.score {
    color: var(--secondary-color);
    font-weight: 600;
}

/* ========== UP主推荐 ========== */
.up-recommend {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
}

.up-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

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

.up-avatar-lg {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin: 0 auto 10px;
    object-fit: cover;
}

.up-card h4 {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.up-card p {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 6px;
}

.follower-count {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.btn-follow {
    padding: 6px 20px;
    background: var(--secondary-color);
    color: #fff;
    border-radius: 15px;
    font-size: 13px;
    transition: var(--transition);
}

.btn-follow:hover {
    background: #ff85ad;
}

.btn-follow.followed {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
}

/* ========== 加载更多 ========== */
.loading-more {
    display: none;
    text-align: center;
    padding: 20px;
    color: var(--text-tertiary);
    gap: 10px;
}

.loading-more.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== 视频播放模态框 ========== */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
    overflow-y: auto;
}

.video-modal.show {
    display: block;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    min-height: 100vh;
    z-index: 2001;
}

.modal-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(0,0,0,0.5);
    color: #fff;
    border-radius: 50%;
    font-size: 20px;
    z-index: 2002;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--primary-color);
}

.video-player-container {
    display: flex;
    max-width: 1600px;
    margin: 0 auto;
    padding: 60px 20px 20px;
    gap: 20px;
}

.video-player {
    flex: 1;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #000;
}

.player-placeholder {
    aspect-ratio: 16 / 9;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.player-placeholder i {
    font-size: 80px;
    margin-bottom: 15px;
    cursor: pointer;
    transition: var(--transition);
}

.player-placeholder i:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.player-placeholder p {
    font-size: 14px;
    opacity: 0.7;
}

.player-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    display: flex;
    align-items: center;
    gap: 12px;
}

.ctrl-btn {
    color: #fff;
    font-size: 16px;
    padding: 8px;
    transition: var(--transition);
}

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

.progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(255,255,255,0.3);
    border-radius: 2px;
    cursor: pointer;
}

.progress {
    width: 30%;
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
}

.time {
    color: #fff;
    font-size: 12px;
}

/* 弹幕层 */
.danmaku-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 50px;
    pointer-events: none;
    overflow: hidden;
}

.danmaku-item {
    position: absolute;
    white-space: nowrap;
    font-size: 18px;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    animation: danmaku-move 10s linear;
}

@keyframes danmaku-move {
    from { transform: translateX(100%); }
    to { transform: translateX(-100%); }
}

/* 侧边信息 */
.video-sidebar {
    width: 380px;
    flex-shrink: 0;
}

.video-info-section {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 15px;
}

.video-info-section h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.video-stats-bar {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 15px;
}

.video-stats-bar i {
    margin-right: 3px;
}

.video-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.action-btn.like:hover {
    background: var(--secondary-color);
}

.up-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.up-info img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.up-detail {
    flex: 1;
}

.up-detail h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 3px;
}

.up-detail p {
    font-size: 12px;
    color: var(--text-tertiary);
}

.video-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.video-desc .tags {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.video-desc .tag {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 12px;
}

/* 弹幕区 */
.danmaku-section {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 15px;
}

.danmaku-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.danmaku-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-tertiary);
    cursor: pointer;
}

.danmaku-input-box {
    display: flex;
    gap: 10px;
}

.danmaku-input-box input {
    flex: 1;
    height: 36px;
    padding: 0 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 13px;
    outline: none;
}

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

.danmaku-input-box button {
    padding: 0 20px;
    background: var(--primary-color);
    color: #fff;
    border-radius: var(--radius);
    font-size: 13px;
    transition: var(--transition);
}

.danmaku-input-box button:hover {
    background: #00b5e5;
}

/* 评论区和相关视频 */
.video-bottom {
    display: flex;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px 40px;
    gap: 20px;
}

.comments-section {
    flex: 1;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.comments-section h3 {
    font-size: 16px;
    margin-bottom: 20px;
}

.comment-input {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
}

.comment-input img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.comment-box {
    flex: 1;
}

.comment-box textarea {
    width: 100%;
    height: 80px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    resize: none;
    outline: none;
    margin-bottom: 10px;
}

.comment-box textarea:focus {
    border-color: var(--primary-color);
}

.comment-box button {
    float: right;
    padding: 8px 24px;
    background: var(--primary-color);
    color: #fff;
    border-radius: var(--radius);
    font-size: 13px;
    transition: var(--transition);
}

.comment-box button:hover {
    background: #00b5e5;
}

.comment-list {
    clear: both;
}

.comment-item {
    display: flex;
    gap: 12px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-item.hot {
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 10px;
    border-bottom: none;
}

.comment-item img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.comment-content {
    flex: 1;
}

.comment-header {
    margin-bottom: 6px;
}

.comment-header .username {
    font-size: 14px;
    font-weight: 500;
    margin-right: 8px;
}

.comment-header .level {
    font-size: 11px;
    padding: 2px 6px;
    background: var(--border-color);
    border-radius: 3px;
    color: var(--text-tertiary);
}

.comment-content p {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.comment-actions {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.comment-actions span {
    cursor: pointer;
    transition: var(--transition);
}

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

.comment-actions .time {
    margin-left: auto;
}

/* 相关视频 */
.related-videos {
    width: 300px;
    flex-shrink: 0;
}

.related-videos h3 {
    font-size: 16px;
    margin-bottom: 15px;
}

.related-item {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
    cursor: pointer;
}

.related-item img {
    width: 120px;
    height: 70px;
    object-fit: cover;
    border-radius: var(--radius);
}

.related-info h4 {
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-info p {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ========== 页脚 ========== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    margin-left: var(--sidebar-width);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.footer-links a {
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.footer-info {
    font-size: 12px;
    color: var(--text-tertiary);
    line-height: 1.8;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1400px) {
    .video-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .bangumi-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 1200px) {
    .live-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .bangumi-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .up-recommend {
        grid-template-columns: repeat(4, 1fr);
    }

    .video-player-container {
        flex-direction: column;
    }

    .video-sidebar {
        width: 100%;
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .content {
        margin-left: 0;
        max-width: 100%;
    }

    .footer {
        margin-left: 0;
    }

    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .main-nav {
        display: none;
    }

    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .live-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hot-rank-list {
        grid-template-columns: 1fr;
    }

    .bangumi-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .up-recommend {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .upload-btn span,
    .more span {
        display: none;
    }

    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bangumi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .up-recommend {
        grid-template-columns: repeat(2, 1fr);
    }

    .video-bottom {
        flex-direction: column;
    }

    .related-videos {
        width: 100%;
    }

    .footer-links {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0 10px;
    }

    .logo span {
        display: none;
    }

    .header-center {
        margin: 0 10px;
    }

    .upload-btn {
        padding: 6px 12px;
    }

    .carousel-track {
        height: 180px;
    }

    .banner-info h3 {
        font-size: 16px;
    }

    .video-grid {
        gap: 10px;
    }

    .video-title {
        font-size: 12px;
    }

    .up-name,
    .video-stats {
        font-size: 11px;
    }
}