Replace ~48 magic z-index values (z-10..z-[9999] + 2 inline zIndex) with named
tailwind zIndex tokens (base/menu/chrome/paneltab/panel/rail/overlay/popover/
tooltip/tuner). Values are UNCHANGED — a rename, not a renumber — so layering is
identical; the names give one source of truth for the stack.
It looked <main> up when it bound, which the lazy pages won. On a first
visit to the channel page or Plex the chunk is still loading, so the
Suspense fallback is on screen, there is no <main> to find, and the effect
gave up — its dep never changes again, so the button stayed dead for that
whole visit and only worked once the chunk was cached.
It now reads the scroller off the scroll event instead, captured on the
document: scroll doesn't bubble but it does capture, so there is nothing
to look up and nothing to race. Also 50% bigger, as asked (44 -> 64).
Convert the always-visible flat rails to the frosted glass system so they sit
consistently over the new background image (like the nav/header already do):
- Feed filter Sidebar + CollapsedFilterRail: bg-surface/40 -> glass
- Playlists left rail: bg-surface/40 -> glass
- BackToTop FAB: bg-card+border -> glass-card glass-hover
Small controls inside (filter pills/inputs) stay solid — a solid-on-glass
hierarchy, not everything translucent.
Ad-block annoyance lists (e.g. Brave Shields) hide floating corner buttons via attribute
selectors like [aria-label="Back to top"] / [title=...]. Drop both attributes and provide the
accessible name with a visually-hidden child span instead, which those selectors can't match.
A reusable BackToTop fades in once the active page's <main> is scrolled past ~600px and
smooth-scrolls it back to the top. Rendered once at the App root, portaled to <body> for
viewport-fixed placement (bottom-right, below the chat dock), and re-binds to the live <main> on
navigation (page or channel change) so it works on every scrollable page incl. the channel page.
EN/HU/DE.
peter