@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
:root {
    /* --- Theme Colors --- */
    --brand-color: #E50914;
    --bg-color: #141414;
    --text-color: #FFFFFF;
    --text-color-muted: #A0A0A0;
    --panel-bg: rgba(20, 20, 20, 0.94);
    --panel-border: rgba(255, 255, 255, 0.1);
    --hover-bg: rgba(255, 255, 255, 0.08);
    --live-color: #E50914;
    --past-color: #505050;
    --playing-bg: rgba(229, 9, 20, 0.25);
    --category-width: 65px;
    --channel-list-width: 215px;
    /* --- Video.js Custom Colors --- */
    --vjs-control-bg: rgba(28, 28, 28, 0.85);
    --vjs-text-color: #FFFFFF;
    --vjs-icon-color: #FFFFFF;
    --vjs-progress-played: #FFFFFF;
    --vjs-progress-buffered: #777777;
    --vjs-progress-bg: #444444;
    --vjs-hover-bg: rgba(255, 255, 255, 0.2);
}
/* --- Base Layout --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    height: 100%;
    width: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.main-container {
    height: 100%;
    width: 100%;
    position: relative;
    overflow: hidden;
}
/* --- Player --- */
.player-wrapper {
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background: #000;
    z-index: 1;
}
#player-container { 
    width: 100%; 
    height: 100%; 
}
.player-placeholder {
    width: 100%; 
    height: 100%; 
    display: flex;
    justify-content: center; 
    align-items: center;
    color: #888; 
    font-size: 18px; 
    background-color: rgba(0,0,0,0.8);
    position: absolute; 
    top: 0; 
    left: 0; 
    z-index: 2;
    pointer-events: none; 
    opacity: 1; 
    transition: opacity 0.3s ease;
}
.player-placeholder.hidden { opacity: 0; }
/* --- UI Overlay --- */
.ui-overlay {
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    z-index: 5; 
    pointer-events: none;
}
.ui-overlay > * { pointer-events: auto; }
/* --- Sidebar Container --- */
.sidebar-container {
    position: absolute;
    top: 2.5%;
    left: 0;
    height: 95%;
    width: calc(var(--category-width) + var(--channel-list-width) + 320px + 2px); 
    display: flex;
    flex-direction: row;
    z-index: 10;
    background-color: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    backdrop-filter: blur(18px);
    transform: translateX(calc(-100% - 40px));
    opacity: 0;
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}
.sidebar-container.show {
    transform: translateX(2.5%);
    opacity: 1;
}
/* --- Category Sidebar --- */
.category-sidebar {
    width: var(--category-width);
    height: 100%;
    border-right: 1px solid var(--panel-border);
    display: flex;
    flex-direction: column;
    padding: 10px 5px;
    overflow-y: auto;
    flex-shrink: 0;
}
.category-sidebar::-webkit-scrollbar { width: 4px; }
.category-sidebar::-webkit-scrollbar-thumb { 
    background-color: rgba(255,255,255,0.2); 
    border-radius: 2px; 
}
.category-item {
    background-color: transparent;
    border: none;
    color: var(--text-color-muted);
    padding: 12px 5px;
    margin-bottom: 5px;
    border-radius: 6px;
    cursor: pointer;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    transition: background-color 0.2s ease, color 0.2s ease;
    width: 100%;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.category-item:hover {
    background-color: var(--hover-bg);
    color: var(--text-color);
}
.category-item.selected {
    background-color: var(--brand-color);
    color: var(--text-color);
}
/* --- Channel Menu --- */
.channel-menu {
    width: var(--channel-list-width);
    height: 100%; 
    border-right: 1px solid var(--panel-border);
    display: flex; 
    flex-direction: column; 
    flex-shrink: 0;
}
.channel-list { 
    flex-grow: 1; 
    overflow-y: auto; 
    padding: 10px 8px; 
}
.channel-list::-webkit-scrollbar { width: 4px; }
.channel-list::-webkit-scrollbar-thumb { 
    background-color: rgba(255,255,255,0.2); 
    border-radius: 2px; 
}
.channel-list p { 
    text-align: center; 
    padding: 20px; 
    color: var(--text-color-muted); 
}
.channel-item {
    display: flex; 
    align-items: center; 
    padding: 8px 10px;
    border-radius: 6px; 
    transition: background-color 0.2s ease; 
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.channel-item img { 
    width: 52px; 
    height: 29px; 
    margin-right: 10px;
    object-fit: contain; 
    border-radius: 4px; 
    flex-shrink: 0; 
} 
.channel-item .name { 
    font-size: 14px; 
    font-weight: 500; 
    color: var(--text-color-muted); 
    flex-grow: 1; 
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis; 
}
.channel-item:hover { background-color: var(--hover-bg); }
.channel-item.selected { background-color: var(--brand-color); }
.channel-item.selected .name { 
    color: var(--text-color); 
    font-weight: 600; 
}
/* --- EPG Area --- */
.epg-area { 
    width: 320px; 
    height: 100%; 
    display: flex; 
    flex-direction: column; 
    flex-shrink: 0; 
}
.epg-list { 
    flex-grow: 1; 
    overflow-y: auto; 
    padding: 10px 0; 
}
.epg-list::-webkit-scrollbar { width: 4px; }
.epg-list::-webkit-scrollbar-thumb { 
    background-color: rgba(255,255,255,0.2); 
    border-radius: 2px; 
}
.epg-list p { 
    text-align: center; 
    padding: 20px; 
    color: var(--text-color-muted); 
}
.epg-item {
    padding: 10px 15px; 
    border-bottom: 1px solid var(--panel-border);
    transition: background-color 0.2s ease, transform 0.1s ease-out, opacity 0.2s ease;
    display: flex; 
    gap: 15px; 
    align-items: flex-start;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.epg-item:first-child { border-top: 1px solid var(--panel-border); }
.epg-item.has-replay { cursor: pointer; }
.epg-item.has-replay:hover { 
    background-color: var(--hover-bg); 
    opacity: 0.9; 
}
.epg-item.has-replay:active { 
    transform: scale(0.98); 
    background-color: rgba(255, 255, 255, 0.1); 
}
.epg-item .time { 
    font-size: 13px; 
    font-weight: 600; 
    color: var(--text-color-muted); 
    width: 45px; 
    flex-shrink: 0; 
}
.epg-item .details { 
    display: flex; 
    flex-direction: column; 
    flex-grow: 1; 
    overflow: hidden; 
}
.epg-item .title { 
    font-size: 14px; 
    font-weight: 500; 
    color: var(--text-color); 
    white-space: normal;
    word-wrap: break-word;
    line-height: 1.4;
}
.epg-item .replay-icon { 
    color: var(--brand-color); 
    margin-top: 4px; 
    font-size: 12px; 
    opacity: 0.7; 
}
.epg-item.has-replay:hover .replay-icon { opacity: 1; }
.epg-item .replay-icon .fa-play { 
    font-size: 10px; 
    margin-right: 5px; 
}
.epg-item.live { 
    background-color: rgba(229, 9, 20, 0.15); 
    border-left: 3px solid var(--brand-color); 
    padding-left: 12px; 
}
.epg-item.live .time, .epg-item.live .title { 
    color: var(--text-color); 
    font-weight: 600; 
} 
.epg-item.past { opacity: 0.6; }
.epg-item.past .title { color: var(--text-color-muted); } 
.epg-item.playing {
    background-color: var(--playing-bg); 
    opacity: 1;
    border-left: 3px solid var(--brand-color); 
    padding-left: 12px;
}
.epg-item.playing .title { 
    font-weight: 600; 
    color: var(--text-color); 
}
/* --- Date Navigator --- */
.date-navigator {
    position: absolute; 
    right: 2.5%; 
    top: 50%; 
    transform: translateY(-50%);
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 8px; 
    z-index: 20;
    opacity: 0; 
    transition: opacity 0.4s ease 0.2s; 
    pointer-events: none;
}
.sidebar-container.show ~ .date-navigator { 
    opacity: 1; 
    pointer-events: auto; 
}
.date-button {
    background: rgba(20, 20, 20, 0.8); 
    border: 1px solid var(--panel-border);
    color: var(--text-color-muted); 
    font-size: 12px; 
    font-weight: 600;
    width: 60px; 
    padding: 8px 0; 
    border-radius: 8px; 
    cursor: pointer;
    backdrop-filter: blur(10px); 
    transition: all 0.2s ease; 
    text-align: center;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.date-button span { 
    display: block; 
    font-size: 10px; 
}
.date-button:hover:not(:disabled) { 
    background-color: var(--hover-bg); 
    color: var(--text-color); 
}
.date-button.active { 
    background-color: var(--brand-color); 
    color: var(--text-color); 
    font-weight: 700; 
    border-color: var(--brand-color); 
}
.date-button:disabled { 
    opacity: 0.4; 
    cursor: not-allowed; 
}
/* --- Sidebar Toggle --- */
.sidebar-toggle {
    position: absolute; 
    top: 3.5%; 
    left: 2.5%; 
    width: 40px; 
    height: 40px;
    border-radius: 50%; 
    background-color: var(--panel-bg); 
    border: 1px solid var(--panel-border);
    color: var(--text-color); 
    font-size: 18px; 
    cursor: pointer;
    display: flex; 
    justify-content: center; 
    align-items: center; 
    z-index: 15;
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s ease;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.sidebar-toggle:hover {
    background-color: var(--hover-bg);
}
.sidebar-container.show ~ .sidebar-toggle { 
    transform: translateX(calc(var(--category-width) + var(--channel-list-width) + 320px + 2px)); 
}
/* --- Status Indicator --- */
.content-status { 
    position: absolute; 
    top: 20px; 
    right: 20px; 
    z-index: 20; 
    padding: 8px 16px; 
    border-radius: 20px; 
    font-size: 12px; 
    font-weight: 600; 
    text-transform: uppercase; 
    letter-spacing: 1px; 
    background: rgba(0,0,0,0.6); 
    backdrop-filter: blur(8px); 
    border: 1px solid rgba(255,255,255,0.1); 
    transition: opacity 0.3s ease, transform 0.3s ease; 
    pointer-events: none; 
}
.content-status.live { 
    background: linear-gradient(45deg, #e53935, #f44336); 
    color: white; 
    animation: live-pulse 2s infinite; 
    box-shadow: 0 0 15px rgba(229, 9, 20, 0.4); 
    border: none; 
}
.content-status.recorded { 
    background: var(--brand-color); 
    color: white; 
    box-shadow: 0 0 10px rgba(229, 9, 20, 0.4); 
    border: none; 
}
@keyframes live-pulse { 
    0% { box-shadow: 0 0 15px rgba(229, 9, 20, 0.4); } 
    50% { box-shadow: 0 0 25px rgba(229, 9, 20, 0.6); } 
    100% { box-shadow: 0 0 15px rgba(229, 9, 20, 0.4); } 
}
.content-status.fade-out { 
    opacity: 0; 
    transform: scale(0.8); 
}
/* =================================================================== */
/* --- VIDEO.JS 样式覆盖 --- */
/* =================================================================== */
.video-js {
    color: var(--vjs-text-color);
    border: none; 
    box-shadow: none; 
}
.video-js .vjs-control-bar {
    background: var(--vjs-control-bg);
    backdrop-filter: blur(8px);
    height: 3.5em;
    padding: 0 1em;
}
.video-js .vjs-button > .vjs-icon-placeholder::before {
    color: var(--vjs-icon-color);
}
.video-js .vjs-button:hover {
    background-color: var(--vjs-hover-bg);
    color: var(--vjs-icon-color);
}
.video-js .vjs-button:focus {
    outline: none;
    box-shadow: none;
}
/* --- 大播放按钮 --- */
.video-js .vjs-big-play-button {
    background-color: rgba(0, 0, 0, 0.5); 
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    width: 4em;
    height: 4em;
    line-height: 4em;
    margin-top: -2em;
    margin-left: -2em;
    transition: all 0.2s ease;
}
.video-js .vjs-big-play-button .vjs-icon-placeholder::before {
    color: #fff; 
    font-size: 2em;
    line-height: 2;
}
.video-js:hover .vjs-big-play-button {
    background-color: rgba(255, 255, 255, 0.2); 
    border-color: #fff;
}
/* --- 进度条 --- */
.video-js .vjs-progress-control {
    position: absolute;
    left: 0; 
    right: 0;
    width: 100%; 
    height: 0.5em;
    top: -0.5em;
}
.video-js .vjs-progress-holder {
    height: 100%;
    margin: 0;
    border-radius: 0;
}
.video-js .vjs-slider {
    background-color: var(--vjs-progress-bg);
    border-radius: 0;
    transition: height 0.1s ease-out;
}
.video-js .vjs-progress-control:hover .vjs-slider {
    height: 0.7em;
}
.video-js .vjs-play-progress {
    background-color: var(--vjs-progress-played);
    border-radius: 0;
}
.video-js .vjs-play-progress:before {
    display: none;
}
.video-js .vjs-mouse-display {
    background-color: rgba(0,0,0,0.8);
}
/* --- 缓冲进度条 --- */
.video-js .vjs-load-progress {
    background: var(--vjs-progress-buffered);
    border-radius: 0;
}
.video-js .vjs-load-progress div {
     background: var(--vjs-progress-buffered);
     border-radius: 0;
}
/* --- 时间显示 --- */
.video-js .vjs-time-control {
    color: var(--vjs-text-color);
    line-height: 3.5em;
    font-size: 0.9em;
    padding-left: 0.5em;
    padding-right: 0.5em;
}
.video-js .vjs-current-time { padding-right: 0; }
.video-js .vjs-duration { padding-left: 0; }
.video-js .vjs-time-divider { padding: 0 0.2em; }
/* --- LIVE 指示器 --- */
.video-js .vjs-live-control {
    color: var(--vjs-text-color);
    line-height: 3.5em;
    font-size: 0.9em;
    margin-left: 1em;
}
.video-js .vjs-live-display {
    background-color: var(--brand-color);
    color: white;
    padding: 0.2em 0.6em;
    border-radius: 3px;
    font-weight: bold;
    margin-left: 0.5em;
}
.video-js.vjs-live .vjs-live-display {
    display: inline-block;
}
.video-js:not(.vjs-live) .vjs-live-control {
     display: none;
}
/* --- 音量控制 --- */
.video-js .vjs-volume-panel {
    margin-left: 0.5em;
}
.video-js .vjs-volume-bar {
    background-color: var(--vjs-progress-bg);
}
.video-js .vjs-volume-level {
    background: var(--vjs-progress-played);
}
.video-js .vjs-volume-level:before {
    display: none;
}
/* --- 全屏按钮 --- */
.video-js .vjs-fullscreen-control {
    margin-right: -0.5em;
}
/* =================================================================== */
/* --- 移动端优化 (max-width: 768px) --- */
/* =================================================================== */
@media (max-width: 768px) {
    /* --- 侧边栏容器 --- */
    .sidebar-container {
        width: 90vw;
        max-width: 420px;
        height: 100%;
        top: 0;
        left: 0;
        border-radius: 0;
        border-right: 1px solid var(--panel-border);
        border-left: none;
        border-top: none;
        border-bottom: none;
        flex-direction: column;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .sidebar-container.show {
        transform: translateX(0);
        opacity: 1; 
    }
    /* --- 切换按钮 --- */
    .sidebar-toggle {
        top: 15px;
        left: 15px;
        width: 48px;
        height: 48px;
        font-size: 20px;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .sidebar-container.show ~ .sidebar-toggle {
        transform: translateX(calc(90vw - 15px));
    }
    /* --- 分类侧边栏 --- */
    .category-sidebar {
        width: 100%;
        height: auto;
        flex-shrink: 0;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 8px 10px;
        border-right: none;
        border-bottom: 1px solid var(--panel-border);
        -webkit-overflow-scrolling: touch;
    }
    /* 隐藏水平滚动条但保持滚动功能 */
    .category-sidebar::-webkit-scrollbar {
        height: 2px;
    }
    .category-sidebar::-webkit-scrollbar-thumb {
        background-color: rgba(255,255,255,0.3);
        border-radius: 1px;
    }
    .category-item {
        flex-shrink: 0;
        padding: 12px 18px;
        font-size: 14px;
        min-width: 60px;
        margin-right: 8px;
        margin-bottom: 0;
    }
    /* --- 频道列表 --- */
    .channel-menu {
        width: 100%;
        height: 40vh;
        flex-shrink: 0;
        border-right: none;
        border-bottom: 1px solid var(--panel-border);
    }
    
    .channel-list {
        padding: 8px;
    }
    
    .channel-item {
        padding: 12px 10px;
        margin-bottom: 4px;
    }
    
    .channel-item img {
        width: 60px;
        height: 34px;
        margin-right: 12px;
    }
    
    .channel-item .name {
        font-size: 15px;
    }
    /* --- EPG 区域 --- */
    .epg-area {
        width: 100%;
        height: auto;
        flex-grow: 1;
    }
    
    .epg-list {
        padding: 8px 0;
    }
    
    .epg-item {
        padding: 12px 15px;
    }
    
    .epg-item .time {
        font-size: 14px;
        width: 50px;
    }
    
    .epg-item .title {
        font-size: 15px;
        line-height: 1.5;
    }
    /* --- 日期导航器 --- */
    .date-navigator {
        top: auto;
        bottom: 80px;
        right: 15px;
        transform: none;
        opacity: 1;
        pointer-events: auto;
    }
    /* 侧边栏打开时隐藏日期导航器 */
    .sidebar-container.show ~ .date-navigator {
        display: none;
    }
    .date-button {
        width: 55px;
        padding: 10px 0;
        font-size: 13px;
    }
    /* --- 状态指示器 --- */
    .content-status {
        top: 15px;
        right: 15px;
        font-size: 11px;
        padding: 6px 12px;
    }
    /* --- Video.js 移动端优化 --- */
    .video-js .vjs-control-bar {
        height: 4em;
        padding: 0 0.5em;
    }
    .video-js .vjs-big-play-button {
        width: 5em;
        height: 5em;
        line-height: 5em;
        margin-top: -2.5em;
        margin-left: -2.5em;
    }
    .video-js .vjs-big-play-button .vjs-icon-placeholder::before {
        font-size: 2.5em;
        line-height: 2;
    }
    .video-js .vjs-time-control {
        font-size: 0.85em;
        padding-left: 0.3em;
        padding-right: 0.3em;
    }
    .video-js .vjs-progress-control {
        height: 0.6em;
        top: -0.6em;
    }
    .video-js .vjs-progress-control:hover .vjs-slider {
        height: 0.9em;
    }
    /* 移动端隐藏部分控制按钮 */
    .video-js .vjs-picture-in-picture-control {
        display: none;
    }
    /* 音量控制改为悬浮式 */
    .video-js .vjs-volume-panel {
        margin-left: 0.3em;
    }
}
/* =================================================================== */
/* --- 平板优化 (768px - 1024px) --- */
/* =================================================================== */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar-container {
        width: 520px;
    }
    .sidebar-container.show {
        transform: translateX(2%);
    }
    .sidebar-toggle {
        top: 2.5%;
        left: 2%;
    }
    .sidebar-container.show ~ .sidebar-toggle {
        transform: translateX(520px);
    }
    .category-width {
        width: 60px;
    }
    .channel-list-width {
        width: 200px;
    }
    .epg-area {
        width: 260px;
    }
    .date-navigator {
        right: 2%;
    }
}
/* =================================================================== */
/* --- 大屏幕优化 (min-width: 1920px) --- */
/* =================================================================== */
@media (min-width: 1920px) {
    .sidebar-container {
        width: calc(var(--category-width) + var(--channel-list-width) + 380px + 2px);
    }
    .epg-area {
        width: 380px;
    }
    .channel-item img {
        width: 60px;
        height: 34px;
    }
    .channel-item .name {
        font-size: 15px;
    }
    .epg-item .title {
        font-size: 15px;
    }
    .date-button {
        width: 70px;
        font-size: 13px;
    }
}
/* =================================================================== */
/* --- 触摸设备优化 --- */
/* =================================================================== */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    .category-item {
        min-height: 44px;
    }
    .channel-item {
        min-height: 52px;
    }
    .epg-item.has-replay {
        min-height: 60px;
    }
    .date-button {
        min-height: 44px;
    }
    .sidebar-toggle {
        min-width: 48px;
        min-height: 48px;
    }
    /* 移除 hover 效果 */
    .category-item:hover,
    .channel-item:hover,
    .epg-item.has-replay:hover,
    .date-button:hover:not(:disabled),
    .sidebar-toggle:hover {
        background-color: transparent;
    }
    /* 增强 active 状态 */
    .category-item:active {
        background-color: var(--hover-bg);
        transform: scale(0.95);
    }
    .channel-item:active {
        background-color: var(--hover-bg);
        transform: scale(0.98);
    }
    .epg-item.has-replay:active {
        background-color: var(--hover-bg);
        transform: scale(0.98);
    }
}
/* =================================================================== */
/* --- 暗色模式支持（系统级） --- */
/* =================================================================== */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #F5F5F5;
        --text-color: #1A1A1A;
        --text-color-muted: #666666;
        --panel-bg: rgba(255, 255, 255, 0.95);
        --panel-border: rgba(0, 0, 0, 0.1);
        --hover-bg: rgba(0, 0, 0, 0.05);
        --past-color: #AAAAAA;
    }
    .player-wrapper {
        background: #000;
    }
    .player-placeholder {
        background-color: rgba(255,255,255,0.9);
        color: #666;
    }
}
/* =================================================================== */
/* --- 性能优化 --- */
/* =================================================================== */
/* GPU 加速 */
.sidebar-container,
.sidebar-toggle,
.date-navigator,
.content-status {
    will-change: transform, opacity;
}
/* 减少重绘 */
.channel-item,
.epg-item,
.category-item,
.date-button {
    contain: layout style paint;
}
/* 滚动性能优化 */
.channel-list,
.epg-list,
.category-sidebar {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}