Two bugs in prior video-isolation fix (452ce68):
1. .htmlVideoPlayer wrong class — Jellyfin actually uses
.videoPlayerContainer + <video class="htmlvideoplayer"> (lowercase).
:has(.htmlVideoPlayer) never matched, so L1 :not(:has) was always
true — body never excluded from #000 paint, L2 (lower specificity
0,2,1) lost to L1 (0,3,1). Replaced :has() gate with :not(.arrflix
-video-active) — JS body class is reliable signal.
2. html background-color stayed transparent on details/video pages
despite 5 stylesheet rules saying #000 !important. Headless Chrome
reported computed bg as rgba(0,0,0,0) — root canvas propagation
bug or cascade quirk. Fix: JS shim sets inline style on
<html> with !important. Inline styles win against any stylesheet.
Result: html paints #000 (so letterbox bars are black not white),
body transparent during playback (L2 wins on equal specificity via
source order), videoPlayerContainer + <video> transparent → frames
visible. Off-video: body opaque #000 (L1 fires).
Verified DOM probe: html bg rgb(0,0,0), body rgba(0,0,0,0) when
arrflix-video-active. Both flip when class removed.
s8n
4f13db63f9