.secondary-content {
            animation: fadeInUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            background-image: var(--bg-secondary) !important;
            border-radius: 8px;
            box-shadow: var(--shadow);
            overflow: hidden;
            max-height: 86vh;
        }

        .secondary-content {
            animation-delay: 0.25s;
        }
        .sidebar-videos-container::-webkit-scrollbar {
            width: 8px;
        }

        .sidebar-videos-container::-webkit-scrollbar-thumb {
            background: var(--primary-color);
            border-radius: 4px;
        }

        .sidebar-tabs {
            display: flex;
            border-bottom: 4px inset rgba(188,188,188,0.1);
            box-shadow: 0px -11px 16px -6px rgba(0,0,0,0.1) inset, 0px 19px 24px 4px rgba(247, 247, 247, 0.99) inset;
        }

        .dark-mode .sidebar-tabs {
            background-color:rgba(0,0,0,0.4);
            display: flex;
            border-bottom: 4px inset rgba(188,188,188,0.1);
            box-shadow: 0px -11px 26px -6px rgba(0,0,0,0.5) inset, 0px 19px 34px 4px rgba(219, 219, 219, 0.12) inset;
        }
        .sidebar-tab {
            flex: 1;
            padding: 1rem 0.2rem;
            border: none;
            border-right:1px solid var(--accent-color);
            backdrop-filter: blur(10px);
            background-color: transparent;
            box-shadow:0 0 24px -2px var(--bg-secondary) inset;
            cursor: pointer;
            font-weight: 600;
            border-bottom: 3px solid transparent;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            color: var(--text-primary);
        }

        .sidebar-tab:last-of-type {
            border: none;
            border-bottom: 3px solid transparent;
        }
        .sidebar-tab:hover {
            background: rgba(102, 126, 234, 0.1);
        }

        .tab-counter {
            background: var(--primary-color);
            color: white;
            padding: 5px 6px 5px 5px;
            border-radius: 50%;
            font-size: 0.88rem;
        }

        .sidebar-tab[data-tab="popular"] .tab-counter {
            background: #00cd00;
            -webkit-text-stroke: 1.2px black;
            text-stroke: 1.2px black;
            paint-order: stroke;
        }

        .sidebar-tab[data-tab="trending"] .tab-counter {
            background: #f07730;
            -webkit-text-stroke: 1.2px black;
            text-stroke: 1.2px black;
            paint-order: stroke;
        }

        .sidebar-tab[data-tab="recommended"] .tab-counter {
            background: #9b59b6;
            -webkit-text-stroke: 1.2px black;
            text-stroke: 1.2px black;
            paint-order: stroke;
        }
        .sidebar-similarity-badge {
            position: absolute;
            top: 6px;
            left: 6px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2px 6px;
            border-radius: 8px;
            font-size: 0.65rem;
            font-weight: 600;
            z-index: 10;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
        }

        .sidebar-videos-container {
            display: none;
            padding: 1.5rem 0.4rem;
            max-height: 85vh;
            overflow-y: auto;
        }

        .sidebar-videos-container.active {
            display: block;
            overflow-x: hidden;
        }

        .sidebar-video {
            display: flex;
            margin-bottom: 6px;
            text-decoration: none;
            color: inherit;
            padding: 20px 1px 16px 5px !important;
            background: var(--background-color);
            border-radius: 3px !important;
            transition: transform 0.2s cubic-bezier(.21, 1.03, .54, .56),
                box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            border: none;
        }

        .sidebar-video:hover {
            background: var(--sideber-active);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .sidebar-video .video-thumbnail{
            width: 165px !important;
            margin: 0 !important;
            border-radius: 8px;
            margin-right: 15px;
            position: relative;
            flex-shrink: 0;
            overflow: hidden;
        }

        .sidebar-video .video-thumbnail img {
            position: relative;
            width: 100%;
            height: 120px !important;
            left: -3px;
            top: 2px !important;
            object-fit: cover;
            transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-video-info div {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            text-align: center !important;
            margin-top: 12px !important;
        }

        .sidebar-video-title {
            font-size: 0.86rem;
            font-weight: 600;
            line-height: 1.6;
            margin-top: 4px;
            margin-bottom: 0.7rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            padding: 4px 6px 0 !important;
        }
        .sidebar-thumbnail span.video-duration{
            position: absolute;
            bottom: 8px !important;
            right: 6px;
            background: rgba(0, 0, 0, 0.45);
            color: white;
            padding: 3px 6px;
            border-radius: 4px;
            font-size: 0.75rem;
            -webkit-text-stroke: 2px rgba(50,50,50,0.9);
            text-stroke: 2px rgba(50,50,50,0.9);
            paint-order: stroke;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(255, 87, 87, 0.26) !important;
        }
        .sidebar-video-views,
        .sidebar-video-date {
            font-size: 1rem;
            color: var(--text-secondary);
        }

        .sidebar-tab.active {
            border-bottom-color: var(--primary-color);
            color: var(--primary-color);
            background-color: rgba(66, 138, 198, 0.2);
            box-shadow: 0px -3px 16px -6px rgba(0, 0, 0, 0.2) inset;
            font-weight: bold;
        }
        #trending-content {
            border-left: 3px solid #f07730 !important;
        }

        #popular-content {
            border-left: 3px solid #00cd00 !important;
        }