:root {
    --bg: #080808;
    --panel: #141414;
    --panel-soft: #1b1b1b;
    --line: rgba(255, 255, 255, 0.1);
    --muted: #969696;
    --text: #f4f4f4;
    --accent: #e50914;
    --accent-soft: rgba(229, 9, 20, 0.16);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    background:
        radial-gradient(circle at 12% 0%, rgba(229, 9, 20, 0.12), transparent 32rem),
        linear-gradient(180deg, #101010 0%, #080808 42%, #060606 100%);
}

button, input, select { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, [tabindex]:focus-visible {
    outline: 2px solid rgba(229, 9, 20, 0.9);
    outline-offset: 2px;
}

.live-nav {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
    padding: 10px 3%;
    background: rgba(8, 8, 8, 0.88);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(18px);
}

.live-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--accent);
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 0.03em;
    text-decoration: none;
}

.live-brand img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
}

.live-brand small {
    margin-left: 3px;
    color: #777;
    font-size: 10px;
    letter-spacing: 0.14em;
    vertical-align: middle;
}

.live-nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    font-size: 12px;
}

.nav-status i { color: #f59e0b; font-size: 8px; }
.nav-status.ok i { color: #22c55e; }
.nav-status.bad i { color: #ef4444; }

.ghost-btn,
.icon-btn,
.filter-btn,
.load-more {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.06);
    cursor: pointer;
    transition: 0.18s ease;
}

.ghost-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 12px;
    border-radius: 999px;
    color: #ddd;
    font-size: 12px;
}

.ghost-btn:hover, .icon-btn:hover, .filter-btn:hover, .load-more:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
}

.live-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 390px;
    gap: 22px;
    width: min(1680px, 95%);
    margin: 0 auto;
    padding: 22px 0 34px;
}

.watch-panel { min-width: 0; }

.video-shell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: calc(100vh - 250px);
    overflow: hidden;
    background: #000;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 15px;
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.42);
}

#liveVideo {
    width: 100%;
    height: 100%;
    background: #000;
    object-fit: contain;
}

.empty-state {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 24px;
    text-align: center;
    color: #bdbdbd;
    background:
        radial-gradient(circle at 50% 36%, rgba(229, 9, 20, 0.16), transparent 34%),
        #050505;
}

.empty-state[hidden] { display: none; }
.empty-state i { color: var(--accent); font-size: 44px; opacity: 0.9; }
.empty-state strong { color: #fff; font-size: 19px; }
.empty-state span { max-width: 460px; color: #777; font-size: 13px; line-height: 1.6; }

.player-toast {
    position: absolute;
    top: 16px;
    left: 50%;
    z-index: 4;
    transform: translateX(-50%);
    max-width: calc(100% - 32px);
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    color: #fff;
    background: rgba(0, 0, 0, 0.82);
    font-size: 12px;
    text-align: center;
    pointer-events: none;
}

.channel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 2px 10px;
}

.channel-identity {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.current-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 58px;
    height: 58px;
    flex: 0 0 auto;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 14px;
    color: #777;
    background: #171717;
    font-size: 22px;
}

.current-logo img { width: 100%; height: 100%; object-fit: contain; background: #fff; }

.current-copy { min-width: 0; }
.current-copy h1 {
    margin: 0 0 4px;
    overflow: hidden;
    color: #fff;
    font-size: clamp(20px, 2vw, 29px);
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.current-meta {
    overflow: hidden;
    color: var(--muted);
    font-size: 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.watch-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    color: #d8d8d8;
}

.icon-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.icon-btn.favorite { color: #f5c518; border-color: rgba(245, 197, 24, 0.35); background: rgba(245, 197, 24, 0.08); }

.play-status {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    min-height: 28px;
    color: #b9b9b9;
    font-size: 12px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #666;
}

.status-dot.connecting { background: #f59e0b; box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.12); }
.status-dot.playing { background: #22c55e; box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12); }
.status-dot.error { background: #ef4444; box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12); }

.play-mode {
    padding: 2px 8px;
    border-radius: 999px;
    color: #9ca3af;
    background: rgba(255, 255, 255, 0.07);
    font-size: 10px;
}

.watch-tips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin-top: 14px;
    padding: 11px 14px;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 10px;
    color: #7b7b7b;
    background: rgba(255, 255, 255, 0.025);
    font-size: 11px;
}

.watch-tips i { margin-right: 4px; color: #b7b7b7; }

.channel-sidebar {
    position: sticky;
    top: 86px;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 108px);
    min-height: 480px;
    overflow: hidden;
    background: rgba(20, 20, 20, 0.94);
    border: 1px solid var(--line);
    border-radius: 15px;
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.28);
}

.sidebar-title {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 16px 10px;
}

.sidebar-title h2 { margin: 0; font-size: 16px; }
.sidebar-title p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }
.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 8px;
    border-radius: 999px;
    color: #fff;
    background: rgba(229, 9, 20, 0.82);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.sidebar-tools {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 0 12px 9px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 11px;
    border: 1px solid var(--line);
    border-radius: 9px;
    color: #777;
    background: #0f0f0f;
}

.search-box input {
    width: 100%;
    min-width: 0;
    padding: 0;
    border: 0;
    outline: 0;
    color: #eee;
    background: transparent;
    font-size: 12px;
}

.search-box input::placeholder { color: #666; }

#groupSelect {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 9px;
    color: #ddd;
    background: #0f0f0f;
    font-size: 12px;
}

.filter-row {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 0 12px 10px;
}

.filter-btn {
    padding: 6px 10px;
    border-radius: 999px;
    color: #a6a6a6;
    font-size: 11px;
}

.filter-btn.active {
    color: #fff;
    background: rgba(229, 9, 20, 0.82);
    border-color: rgba(229, 9, 20, 0.9);
}

#filterCount {
    margin-left: auto;
    color: #737373;
    font-size: 10px;
}

.channel-list {
    flex: 1;
    min-height: 120px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0 7px 8px;
    scrollbar-width: thin;
    scrollbar-color: #3a3a3a transparent;
}

.channel-list::-webkit-scrollbar { width: 6px; }
.channel-list::-webkit-scrollbar-thumb { background: #3a3a3a; border-radius: 99px; }

.channel-item {
    display: grid;
    grid-template-columns: 50px minmax(0, 1fr) 30px;
    align-items: center;
    gap: 9px;
    padding: 8px;
    border: 1px solid transparent;
    border-radius: 9px;
    cursor: pointer;
    transition: 0.15s ease;
}

.channel-item:hover { background: rgba(255, 255, 255, 0.055); }
.channel-item.active {
    border-color: rgba(229, 9, 20, 0.38);
    background: var(--accent-soft);
}

.channel-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 36px;
    overflow: hidden;
    border-radius: 7px;
    color: #777;
    background: #222;
    font-size: 13px;
    font-weight: 800;
}

.channel-logo img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.channel-copy { min-width: 0; }
.channel-name {
    overflow: hidden;
    color: #e8e8e8;
    font-size: 12.5px;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.channel-meta {
    display: flex;
    gap: 6px;
    margin-top: 3px;
    overflow: hidden;
    color: #747474;
    font-size: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.channel-star {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    color: #5f5f5f;
    background: transparent;
    cursor: pointer;
}

.channel-star:hover { color: #f5c518; background: rgba(245, 197, 24, 0.1); }
.channel-star.active { color: #f5c518; }

.load-more {
    margin: 4px 12px 8px;
    padding: 9px;
    border-radius: 8px;
    color: #aaa;
    font-size: 11px;
}

.source-summary {
    min-height: 26px;
    padding: 8px 13px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: #666;
    font-size: 10px;
    line-height: 1.5;
}

.list-message {
    padding: 34px 18px;
    color: #777;
    text-align: center;
    font-size: 12px;
    line-height: 1.7;
}

.list-message i { display: block; margin-bottom: 10px; color: #4c4c4c; font-size: 26px; }

.toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    z-index: 90;
    transform: translateX(-50%);
    max-width: min(92vw, 520px);
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    color: #fff;
    background: rgba(20, 20, 20, 0.96);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
    font-size: 12px;
    text-align: center;
}

@media (max-width: 980px) {
    .live-layout {
        grid-template-columns: 1fr;
        width: min(96%, 760px);
        gap: 16px;
        padding-top: 14px;
    }

    .video-shell { max-height: none; }

    .channel-sidebar {
        position: static;
        height: auto;
        min-height: 0;
    }

    .channel-list { max-height: 52vh; }
}

@media (max-width: 560px) {
    .live-nav { padding: 9px 12px; }
    .live-brand { font-size: 18px; }
    .live-brand img { width: 31px; height: 31px; }
    .nav-status { display: none; }
    .ghost-btn span { display: none; }
    .ghost-btn { width: 36px; height: 36px; justify-content: center; padding: 0; }
    .live-layout { width: 100%; padding: 8px 10px 22px; }
    .video-shell { border-radius: 10px; }
    .channel-head { align-items: flex-start; padding-top: 14px; }
    .channel-head { flex-wrap: wrap; }
    .channel-identity { flex: 1 1 100%; }
    .watch-actions { margin-left: auto; }
    .current-logo { width: 46px; height: 46px; border-radius: 10px; }
    .current-copy h1 { font-size: 19px; }
    .watch-actions { gap: 5px; }
    .icon-btn { width: 34px; height: 34px; }
    .watch-tips span:last-child { display: none; }
    .channel-sidebar { border-radius: 11px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}