- Bump progress bar track opacity from 15% to 25% so the track line is
  visible against dark content
- Increase poster overlay from bg-black/40 to bg-black/50 and widen
  backdrop-blur for stronger separation on dark screens
- Increase pause overlay from bg-black/30 to bg-black/40
- Widen play button glow radius from 20px to 30px at 30% intensity

Made-with: Cursor