.video-scroll-container {
    width: 100%;
    height: 100%;
    overflow: hidden;
    touch-action: none;
    overscroll-behavior: none;
    position: relative;
}

.video-item {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
    will-change: transform;
    backface-visibility: hidden;
    transform: translate3d(0, 0, 0);
    contain: layout style paint;
}

.video-item.active {
    z-index: 2;
}

.video-item video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    will-change: transform;
}

.right-actions {
    position: absolute;
    right: 12px;
    bottom: calc(96px + var(--safe-area-bottom));
    display: flex;
    flex-direction: column;
    gap: 18px;
    z-index: 10;
    align-items: center;
}

.action-btn-right {
    background: none;
    border: none;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

.icon-container {
    width: 44px;
    height: 44px;
    background: rgba(20, 20, 26, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-pill);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 4px;
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    transition: transform var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}

.icon-container svg {
    width: 22px;
    height: 22px;
    fill: white;
}

.action-btn-right:active .icon-container {
    transform: scale(0.88);
    background: rgba(20, 20, 26, 0.65);
}

.action-label {
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.video-info-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--space-7) calc(72px + var(--space-4)) calc(28px + var(--safe-area-bottom)) var(--space-4);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.78) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
    pointer-events: none;
    z-index: 5;
}

.author {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
    letter-spacing: -0.01em;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    pointer-events: auto;
    cursor: pointer;
    padding: 0 6px;
    margin-left: -6px;
    border-radius: 6px;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.author:hover {
    background: rgba(255, 255, 255, 0.10);
    color: #ffffff;
}

.author:active {
    background: rgba(255, 45, 85, 0.22);
}

.author:focus-visible {
    outline: 1.5px solid var(--accent);
    outline-offset: 1px;
}

.title {
    font-size: 14.5px;
    line-height: 1.4;
    margin-bottom: 6px;
    color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.title .hashtag {
    display: inline-block;
    color: #ff7591;
    font-weight: 700;
    letter-spacing: 0.01em;
    pointer-events: auto;
    cursor: pointer;
    padding: 0 6px;
    margin: 0 2px;
    border-radius: 6px;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.title .hashtag:hover {
    background: rgba(255, 45, 85, 0.16);
    color: #ff9bb0;
}

.title .hashtag:active {
    background: rgba(255, 45, 85, 0.28);
}

.title .hashtag:focus-visible {
    outline: 1.5px solid var(--accent);
    outline-offset: 1px;
}

.date {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.02em;
}

.bottom-controls {
    position: absolute;
    bottom: calc(10px + var(--safe-area-bottom));
    left: 0;
    width: 100%;
    height: 24px;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0 10px;
    touch-action: none;
}

.bottom-progress-bar {
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.22);
    position: relative;
    transition: height var(--duration-base) var(--ease-out),
                background var(--duration-base) var(--ease-out);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.bottom-controls:hover .bottom-progress-bar,
.bottom-controls:active .bottom-progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.32);
}

.bottom-progress {
    height: 100%;
    background: var(--text-primary);
    width: 0%;
    position: relative;
    border-radius: inherit;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
    transition: background var(--duration-fast) var(--ease-out);
}

.bottom-controls:hover .bottom-progress {
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.play-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    width: 72px;
    height: 72px;
    background: rgba(10, 10, 13, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-out),
                transform var(--duration-base) var(--ease-out);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    z-index: 30;
}

.play-indicator.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.speed-indicator {
    position: absolute;
    top: calc(16px + var(--safe-area-top));
    left: 50%;
    transform: translate(-50%, -6px);
    background: rgba(10, 10, 13, 0.82);
    color: white;
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    opacity: 0;
    pointer-events: none;
    transition: opacity 160ms var(--ease-out),
                transform 160ms var(--ease-out);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: var(--shadow-sm);
    z-index: 40;
}

.speed-indicator.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.play-indicator svg {
    width: 32px;
    height: 32px;
    fill: white;
    margin-left: 4px;
}

.mute-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    width: 72px;
    height: 72px;
    background: rgba(10, 10, 13, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-out),
                transform var(--duration-base) var(--ease-out);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    z-index: 30;
}

.mute-indicator.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.mute-indicator svg {
    width: 32px;
    height: 32px;
    fill: white;
}

.time-display-floating {
    position: absolute;
    bottom: 28px;
    background: rgba(10, 10, 13, 0.85);
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 11.5px;
    font-weight: 500;
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
    pointer-events: none;
    transform: translateX(-50%);
    white-space: nowrap;
    border: 1px solid var(--border-default);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 30;
}

.distraction-free-mode .video-info-overlay,
.distraction-free-mode .right-actions {
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-slow) var(--ease-out);
}

.distraction-free-mode .top-bar {
    transition: opacity var(--duration-slow) var(--ease-out);
}

.distraction-free-mode.user-active .video-info-overlay,
.distraction-free-mode.user-active .right-actions {
    opacity: 1;
    pointer-events: auto;
}

/* 标签过滤提示条 */
.filter-bar {
    position: absolute;
    top: calc(72px + var(--safe-area-top));
    left: 50%;
    z-index: 110;
    transform: translate(-50%, -10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-out),
                transform var(--duration-base) var(--ease-out);
}

.filter-bar.show {
    opacity: 1;
    transform: translate(-50%, 0);
    pointer-events: auto;
}

.filter-bar-inner {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 6px 6px 6px var(--space-4);
    background: rgba(20, 20, 26, 0.82);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(24px) saturate(170%);
    -webkit-backdrop-filter: blur(24px) saturate(170%);
    max-width: min(84vw, 420px);
}

.filter-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 56vw;
}

.filter-exit-btn {
    flex-shrink: 0;
    background: var(--bg-glass-strong);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    padding: 5px var(--space-3);
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.filter-exit-btn:hover {
    background: var(--accent-soft);
    color: var(--accent-hover);
}

.filter-exit-btn:active {
    transform: scale(0.95);
}

/* 移动端：底部为系统手势条/小白条留出空间 */
@media (max-width: 900px), (pointer: coarse) {
    .bottom-controls {
        bottom: calc(26px + var(--safe-area-bottom));
    }

    .video-info-overlay {
        padding-bottom: calc(46px + var(--safe-area-bottom));
    }
}