Three low-risk wins for large filtered feeds:
- content-visibility:auto on cards (.cv-card/.cv-row) so the browser skips
layout/paint for off-screen cards; contain-intrinsic-size keeps the scrollbar
stable and is remembered per card after first render.
- memo(VideoCard) + stable onState/onChannelFilter callbacks (onState reads the
loaded list via a ref) so appending a page only renders the ~60 new cards
instead of reconciling every card already on screen.
- Prefetch the next page earlier (sentinel rootMargin 800px → 1500px) so the
'Loading more…' flash is far less likely during fast scrolling.
backdrop-filter blur does work here; the previous 94% opacity made .glass nearly
solid so the blurred backdrop never showed. Dial back to 82% with a strong blur so
overlays read as frosted glass again, while staying less see-through than the old
72% that made the account menu look too transparent.
Evidence (sharp video behind overlays) shows backdrop-filter is a no-op here, most
likely because browser hardware acceleration is off — so the glass relied on a blur
that never rendered. Lean on opacity instead (94% surface) so overlay menus/panels
read as frosted glass regardless of GPU; keep the blur as a bonus when available.
Revert the settings backdrop to a plain dim scrim (no whole-page blur) and make the
header a solid bar (no backdrop-filter ancestor).
- Increase .glass blur (32px) so overlay menus (account) read as proper frosted glass.
- Blur the settings modal backdrop (overlay backdrop-blur) so the panel reliably
frosts the content behind it instead of showing a sharp video through.
- Remove the now-redundant header buttons (dark/light, color scheme, grid/list) —
they live in Settings → Appearance. Header keeps search, sync, bell, account.
Video cards / channel rows / sidebar widgets render in bulk over a solid background
where backdrop blur adds little but is GPU-expensive and triggers forced reflow
(browser perf 'Violation' logs). Keep translucency + depth; reserve blur for the few
.glass overlay surfaces (menus, panels, toasts, tooltips).
- Tooltip: render in a portal with fixed positioning + edge-flip so hints are never
clipped by overflow/stacking ancestors (fixes mispositioned/hidden bubbles app-wide).
- Glass: raise opacity so overlay menus/panels stay readable over content.
- SettingsPanel: vertical tab rail (no wrapping/jumping), content grid-stacked so the
panel sizes to the tallest tab (stable height) and floats to its content height.
- Notifications: the test toast is now a normal auto-dismissing toast (with countdown
bar) that also plays the sound via a new force-sound flag.
- Channel manager: explain priority/tags/hide and what 'Sync subscriptions' does;
add a 'Channel priority' feed sort so priority is actually meaningful.
- Add a theme-aware glass surface system (.glass/.glass-card + ambient backdrop,
performance-mode opt-out) and apply it across panels, popovers, toasts, cards,
sidebar widgets, channel rows, video cards and login.
- SettingsPanel: slide in/out animation, glass styling, wrapping pill tabs (no
horizontal scrollbar) with a prominent active state.
- Notifications: auto-dismiss can be switched off (stays until closed); the test
notification now also triggers the alert sound; resume a suspended AudioContext.
- Add an app-wide, toggleable hint/tooltip system (lib/hints + Tooltip) and wire
hints across the settings and channel-manager surfaces; persisted per account.
- NotificationCenter closes on outside click (document listener, not an overlay
that the blurred header trapped) and no longer needs a second bell click.
- Toasts show a level-colored countdown bar and auto-dismiss faster (6s default).
- Hidden-video notifications carry structured meta so the center offers an in-app
'Find in feed' (jump to that channel's hidden videos) and a one-click 'Unhide',
working even after a reload when the live Undo callback is gone.
- Hidden view shows an Unhide action (eye icon) instead of Hide
- Upload-date filter: From/To date range (inclusive); feed shows only videos
published in that window (backend published_after / published_before)
- New sort options: Name (A-Z) and Channel subscribers, alongside date/views/
duration/shuffle
- Native controls follow the theme via color-scheme (dark date picker)
- Vite + React + TS + Tailwind SPA served by FastAPI (multi-stage Docker build)
- Four color schemes (Midnight default, Forest, Slate, YouTube) x dark/light,
adjustable text size; persisted to user preferences and localStorage
- Header search, grid/list toggle, theme menu; sidebar filters (show state,
sort, include Shorts/live, language + topic tag chips with any/all matching)
- Infinite-scroll feed of video cards; click opens youtube.com in a new tab;
per-video watched / saved / hidden actions with optimistic updates
- SPA fallback routing; login screen for unauthenticated users
