.navigation-scrollbar{scrollbar-width:thin;scrollbar-color:rgba(139,92,246,.4) transparent}.navigation-scrollbar::-webkit-scrollbar{width:4px}.navigation-scrollbar::-webkit-scrollbar-track{background:transparent}.navigation-scrollbar::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(139,92,246,.4),rgba(147,51,234,.4));border-radius:2px}.navigation-scrollbar::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,rgba(139,92,246,.6),rgba(147,51,234,.6))}.sidebar-container::-webkit-scrollbar{display:none}.sidebar-container{-ms-overflow-style:none;scrollbar-width:none}.sidebar-scroll-area{max-height:calc(100vh - 200px)}.sidebar-scroll-area::-webkit-scrollbar{width:6px}.sidebar-scroll-area::-webkit-scrollbar-track{background:transparent}.sidebar-scroll-area::-webkit-scrollbar-thumb{background:hsla(0,0%,100%,.2);border-radius:3px}.sidebar-scroll-area::-webkit-scrollbar-thumb:hover{background:hsla(0,0%,100%,.3)}.vds-video-layout .vds-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:none;outline:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:var(--media-button-padding,6px);border-radius:var(--media-button-border-radius,999px);color:var(--media-button-color,var(--media-controls-color,#f5f5f5))}.vds-video-layout .vds-button:hover{background:var(--media-button-hover-bg,hsla(0,0%,100%,.12))}.vds-video-layout .vds-icon{width:var(--media-button-icon-size,62%);height:var(--media-button-icon-size,62%);display:block}.vds-video-layout .vds-controls{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between}.vds-video-layout .vds-controls[data-visible]{background-image:linear-gradient(0deg,rgba(0,0,0,.85) 0,rgba(0,0,0,.35) 18%,transparent 40%,transparent 72%,rgba(0,0,0,.55))}.vds-video-layout .vds-controls-group{display:flex;align-items:center;pointer-events:auto}.vds-video-layout .vds-slider{position:relative;display:inline-flex;align-items:center;cursor:pointer;width:var(--width);height:var(--height)}.vds-video-layout .vds-slider-track{z-index:0;width:var(--track-width);background-color:var(--media-slider-track-bg,hsla(0,0%,100%,.25))}.vds-video-layout .vds-slider-track,.vds-video-layout .vds-slider-track-fill{position:absolute;height:var(--track-height);top:50%;left:0;border-radius:var(--media-slider-track-border-radius,999px);transform:translateY(-50%)}.vds-video-layout .vds-slider-track-fill{z-index:2;background:var(--media-slider-track-fill-bg,var(--media-brand));width:var(--slider-fill,0)}.vds-video-layout .vds-slider-thumb{z-index:3;position:absolute;top:50%;left:var(--slider-fill,0);width:var(--thumb-size);height:var(--thumb-size);transform:translate(-50%,-50%);border-radius:999px;background-color:var(--media-slider-thumb-bg,#fff);box-shadow:0 1px 3px rgba(0,0,0,.4);opacity:0;transition:opacity .15s ease}.vds-video-layout .vds-slider:hover .vds-slider-thumb,.vds-video-layout .vds-slider[data-active] .vds-slider-thumb{opacity:1}.vds-video-layout .vds-menu-items{background:rgba(17,17,20,.96);border:1px solid hsla(0,0%,100%,.08);border-radius:10px;backdrop-filter:blur(12px)}.vds-video-layout{--video-brand:#38bdf8;--video-controls-color:#f5f5f5;--video-focus-ring-color:#38bdf8;--video-border-radius:16px;--video-border:none;--media-button-hover-bg:hsla(0,0%,100%,.14);--media-button-size:40px;--media-button-icon-size:60%;--media-slider-track-height:4px;--media-slider-track-fill-bg:linear-gradient(90deg,#38bdf8,#6366f1);--media-slider-track-bg:hsla(0,0%,100%,.22);--media-slider-thumb-bg:#fff;--media-slider-thumb-size:13px}.vds-video-layout .vds-button{width:var(--media-button-size,40px);height:var(--media-button-size,40px)}.vds-video-layout .vds-play-button{--media-button-size:44px;--media-button-icon-size:64%}.vds-video-layout .vds-time-slider{height:4px;transition:height .15s ease}.vds-video-layout .vds-time-slider:hover,.vds-video-layout .vds-time-slider[data-dragging]{height:6px}.mp-next-lesson-overlay{position:absolute;right:20px;bottom:84px;z-index:30;display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:12px;background:rgba(10,10,14,.92);border:1px solid hsla(0,0%,100%,.1);color:#fff;box-shadow:0 12px 32px rgba(0,0,0,.5);animation:mp-next-lesson-in .3s ease}@keyframes mp-next-lesson-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.mp-next-lesson-overlay button{background:hsla(0,0%,100%,.12);border:1px solid hsla(0,0%,100%,.15);color:#fff;border-radius:8px;padding:6px 12px;font-size:13px;cursor:pointer;transition:background .15s ease;white-space:nowrap}.mp-next-lesson-overlay button:hover{background:hsla(0,0%,100%,.22)}.mp-next-lesson-overlay .mp-next-lesson-primary{background:#38bdf8;border-color:#38bdf8;color:#04141d;font-weight:600}.mp-next-lesson-overlay .mp-next-lesson-primary:hover{background:#67d0ff}