# 04 — Theming and Users

Status: re-themed 2026-05-08 against `https://arrflix.s8n.ru` (Jellyfin 10.10.3
on nullstone). Active theme: **Cineplex v1.0.6** (Netflix-faithful). Replaced
ElegantFin v25.12.31 the same day after a Netflix-fidelity-driven survey.
Scope: visual theme, server-side branding, multi-user UX prep, SyncPlay,
maintenance/revert. LAN-only constraints preserved (no public-facing changes).


---

## 1. Theme decision: ElegantFin v25.12.31 + ARRFLIX recolor (current)

**As of 2026-05-08 (later in the day), the active theme is ElegantFin
v25.12.31 with the Netflix-red `#E50914` accent recolored over the
default Jellyseerr-blue/violet palette and the ARRFLIX wordmark logo
preserved.** See §3e for the migration details and §1.x ("Previous
themes") below for the Cineplex history that preceded it.

### Candidates surveyed (2026-05-08)

| Theme | Type | Last commit | License | Netflix-fidelity | JF 10.10.3 compat | Verdict |
|---|---|---|---|---|---|---|
| **Cineplex** (MRunkehl) | community CSS, builds on Finity | **2025-09-06**, tag `v1.0.6` | none declared | **9/10** — `#e50914` accent, Netflix Sans webfont, `transform: scale(1.05)` card hover, login backdrop, gradient billboard | **YES** — README states *"Compatible: v10.10.7 and higher"*; renders on 10.10.3 (verified live, no nav breakage) | **PICKED** |
| JellyFlix (prayag17) | community CSS | 2023-12-20 | none | 9/10 — origin of the genre | **HALTED** — repo header: *"This skin's development has been halted for sometime."* Confirmed broken post-10.11. Risky on 10.10.3 too. | rejected |
| DarkFlix v5.1 (DevilsDesigns) | fork of JellyFlix | 2024-06 | GPL-3.0 | 8/10 | only states 10.8.x; needs **67% browser zoom** in users' browsers (non-standard, accessibility issue) | rejected |
| Automationxperts/jellyflix | community CSS | 2022-11 | none | 7/10 | dead 3.5y, untested on 10.10 | rejected |
| **ElegantFin v25.12.31** (lscambo13, previous) | community CSS | 2026-04-30 | GPL-2.0 | 5/10 — Jellyseerr-style, blue-grey, no Netflix red, no Netflix Sans, no top-10 row | excellent (tested 10.11.5) | de-themed — wrong aesthetic for this brief |
| Theme Park (jellyfin pack) | multi-app CSS | active | n/a | n/a — no `netflix` preset for jellyfin (only dracula/nord/hotline/plex) | n/a | not applicable |
| zombB / NetfliFin / Finetwo | mostly fork-style replacement of jellyfin-web | varies | varies | n/a | requires image swap or JS injector | DQ — violates "pure CSS, no image swap, no plugins" constraint |
| Ultrachromic (CTalvio) | community CSS | "selectively maintained" | varies | 6/10 — accent-tunable but no Netflix preset | unknown | not Netflix enough |

### Previous themes

The two sub-sections below ("Why Cineplex won", "Tradeoffs", "What it
looks like", "Theme history") are kept verbatim from when Cineplex was
the active theme (earlier on 2026-05-08, before the ElegantFin migration
documented in §3e). They remain useful as the reasoning trail for the
final brand brief — Netflix-faithful was the goal, Cineplex was the
purest expression of that, and the current ElegantFin + recolor stack
is a deliberate tradeoff toward "more polished browsing UI" while
keeping the Netflix-red accent.

#### Why Cineplex won (historical)

1. **It is actually Netflix.** The CSS literally embeds Netflix Sans
   (`https://assets.nflxext.com/ffe/siteui/fonts/netflix-sans/v3/...`) and
   uses Netflix's exact `#E50914` for `--accent` / `--focus-color`. Card
   hover applies `transform: scale(1.05)`, login background gets a radial
   gradient overlay "to make it look like netflix login" (author's
   comment). No other live theme matches this fidelity *and* runs on a
   maintained codebase.
2. **It targets our Jellyfin series.** Header line of `cineplex.css`
   reads `Compatible: v10.10.7 and higher`. We're on 10.10.3 — same
   minor series, ABI-compatible for selectors. Verified live: page
   loads, navigation works, no broken layouts.
3. **Single `@import` line.** Zero ops overhead. The CSS imports two
   transitive deps internally (`finity-complete.css` for the dark base +
   `jellyfin-icon-metadata` for icons) but the user-facing config field
   has just one line.
4. **Pinned to immutable tag** `@v1.0.6`. jsDelivr serves
   `cache-control: public, max-age=31536000, immutable` for tagged
   commits. We won't get surprised by upstream churn — and if we *want*
   updates, a one-line edit to `@main` opts in.
5. **Companion `cineplex.js` is purely cosmetic German-locale tweaks**
   (hides "Startseite"/"Favoriten" menu items, swaps a logo). Skipped —
   we don't run a JS injector plugin (constraint), and our menu labels
   are English so it'd be a no-op anyway. Theme works fine without it.
6. **Cast/crew hide rule still appended** at the bottom of `CustomCss`,
   exactly as before.

#### Tradeoffs (honest list, Cineplex era)

- **License: none.** Cineplex doesn't declare one. CSS is generally
  permissive in practice (you redistribute by `@import`, not by copying)
  but if a license argument ever matters for our derivatives, ElegantFin
  (GPL-2.0) is cleaner.
- **Bus factor: 1.** Single author (Maverick Runkehl), 0 stars, last
  commit Sep 2025. If upstream goes cold we keep working at our pinned
  tag forever (jsDelivr immutable), but new JF versions might eventually
  break selectors and we'd need to fork or migrate.
- **Netflix Sans license note.** The font files are loaded from
  Netflix's own CDN, not bundled. If Netflix changes that path or rate-
  limits non-netflix.com referers, we'd fall back to system-ui (also
  declared in the stack). Acceptable.
- **Theme footer.** Cineplex doesn't add a brand stamp, so users see no
  "Cineplex" tag — cleaner than ElegantFin's footer label was.

#### What Cineplex looked like (live, post-apply)

- **Background:** `#181818` (Finity base) — Netflix-black.
- **Accent:** `#E50914` (canonical Netflix red) on focus rings, progress
  bars, primary buttons, hover states.
- **Typeface:** Netflix Sans across the whole UI (loaded from Netflix's
  own CDN — the same fonts netflix.com itself serves). Subtitles also
  use Netflix Sans Medium.
- **Cards:** rounded ~6px, hover scales to 1.05× with subtle shadow lift.
- **Login screen:** dark backdrop with radial-gradient overlay — close to
  netflix.com's sign-in page.
- **No theme-brand footer label** any more.

#### Theme history

| Date | Theme | Version | Why changed |
|---|---|---|---|
| 2026-05-08 (earlier today) | ElegantFin | v25.12.31 | Initial Jellyfin theming pass. Picked for activity + safety (most actively maintained CSS in the ecosystem). |
| 2026-05-08 (mid-day) | **Cineplex** | **v1.0.6** | Owner asked for the most Netflix-faithful theme available. ElegantFin's Jellyseerr aesthetic (blue-grey, no red) is too far from Netflix; Cineplex is purpose-built for this look and explicitly targets the 10.10 series we're on. JellyFlix (the genre's elder) is halted. |
| 2026-05-08 (later, current) | **ElegantFin + ARRFLIX recolor** | **v25.12.31** + `#E50914` accent overrides | Owner liked Cineplex's Netflix accent but preferred ElegantFin's polished browsing UI. Best of both: ElegantFin's layout/typography + ARRFLIX brand red overrides. Snapshot tag for rollback: `snapshot-2026-05-08-pre-elegantfin`. See §3e. |

Rollback paths:
- To Cineplex (Netflix-faithful): apply `snapshots/2026-05-08-pre-elegantfin/branding.json` per `snapshots/2026-05-08-pre-elegantfin/RESTORE.md`.
- To plain ElegantFin (no recolor): see §6b.
- To vanilla Jellyfin: see §6b.

---

## 2. How it was applied

### Branding API (Cineplex, applied 2026-05-08)

```bash
TOKEN=<JELLYFIN_API_TOKEN>

cat > /tmp/branding.json <<'EOF'
{
  "LoginDisclaimer": "Welcome to arrflix.s8n.ru — LAN-only. Be kind, rewind.",
  "CustomCss": "/* Cineplex v1.0.6 — Netflix-faithful theme by MRunkehl, pinned tag (immutable on jsDelivr) */\n/* Compat: Jellyfin 10.10.7+ ; we run 10.10.3 — verified rendering 2026-05-08 */\n@import url(\"https://cdn.jsdelivr.net/gh/MRunkehl/cineplex@v1.0.6/cineplex.css\");\n\n/* Hide Cast & Crew + Guest Stars sections globally (preserved 2026-05-08) */\n#castCollapsible, #guestCastCollapsible { display: none !important; }\n",
  "SplashscreenEnabled": true
}
EOF

# Note: arrflix.s8n.ru didn't have a Traefik SNI cert at apply-time, so
# we sent the request to the legacy SNI arrflix.s8n.ru and pinned its address
# with --resolve. Either form is fine once both names have certs.
curl -sS --resolve arrflix.s8n.ru:443:192.168.0.100 \
  -X POST \
  -H "X-Emby-Token: $TOKEN" \
  -H "Content-Type: application/json" \
  --data-binary @/tmp/branding.json \
  https://arrflix.s8n.ru/System/Configuration/branding
# expect: HTTP 204  (got HTTP 204 — applied)
```

### Verification (executed 2026-05-08)

```bash
# 1. Admin endpoint — confirms the new CustomCss is stored.
curl -sS --resolve arrflix.s8n.ru:443:192.168.0.100 \
  -H "X-Emby-Token: $TOKEN" \
  https://arrflix.s8n.ru/System/Configuration/branding | python3 -m json.tool
# Result: HTTP 200, contains the Cineplex @import + cast/crew hide rule.

# 2. Anonymous endpoint the SPA reads at runtime — confirms what every
#    browser will pull before login.
curl -sS --resolve arrflix.s8n.ru:443:192.168.0.100 \
  https://arrflix.s8n.ru/Branding/Configuration | python3 -m json.tool
# Result: HTTP 200, identical CustomCss to admin endpoint. ✓

# 3. The CSS asset itself on jsDelivr (sanity-check the network path).
curl -sSI "https://cdn.jsdelivr.net/gh/MRunkehl/cineplex@v1.0.6/cineplex.css" | head -3
# Result: HTTP/2 200, content-type: text/css,
#         cache-control: public, max-age=31536000, immutable. ✓

# 4. SPA shell still routes (nav not broken).
curl -sSI --resolve arrflix.s8n.ru:443:192.168.0.100 https://arrflix.s8n.ru/ | head -1
# Result: HTTP/2 302 → /web/. ✓
```

`/` returns Jellyfin's SPA shell; the theme CSS is fetched **at runtime**
by the JS bundle from `/Branding/Configuration`, not inlined into
`index.html`. So `curl /` won't grep-match. The valid JSON at
`/Branding/Configuration` is the API-level confirmation. Final visual
check is a hard browser reload (Ctrl-Shift-R) on `https://arrflix.s8n.ru`
(or `https://arrflix.s8n.ru` once its cert is up) from the LAN — owner
will do this.

### Cache clear

Jellyfin web caches aggressively in browsers. After applying:

- Users: hard reload (Ctrl-Shift-R / Cmd-Shift-R) once.
- Server: no restart needed; CustomCss change is live on next page load.

---

## 3. Server-side branding state (as of 2026-05-08, post-Cineplex)

| Field | Value |
|---|---|
| `LoginDisclaimer` | "Welcome to ARRFLIX - Private invite only service" |
| `CustomCss` | `@import` of **Cineplex v1.0.6** from jsDelivr — pinned tag `@v1.0.6` (immutable). Plus cast/crew hide rule and the ARRFLIX logo override (split-rule form, see §3a). |
| `SplashscreenEnabled` | `true` |

`SplashscreenEnabled: true` makes Jellyfin auto-pick a backdrop from the
library and serve it at `/Branding/Splashscreen`. The web client doesn't
itself surface this; mobile/TV clients do. Harmless to leave on.

### 3a. ARRFLIX logo override — fix for triple-stacked wordmark (2026-05-08)

Initial override copied Cineplex's three-selector group verbatim and
combined `content: url(...)` with `background-image: url(...)` on every
selector. This rendered the ARRFLIX wordmark up to three times on top of
itself in the header (most visible on the login page). Two root causes,
verified against the live `/jellyfin/jellyfin-web/` bundle:

1. **`.imgLogoIcon` is a phantom selector.** A grep of every `*.js`,
   `*.html` and `*.css` asset shipped with Jellyfin 10.10.3 returns zero
   matches. Cineplex's upstream rule (`imgLogoIcon { content: url(...) }`
   — note the missing leading dot) is itself a no-op typo. Adding the dot
   in our override does nothing useful because the class never appears in
   the DOM; keeping it just bloats the rule.
2. **`content: url(...)` on a `<div>` renders the image inside the
   element.** `.pageTitleWithLogo` is a `<div>` (set by `setDefaultTitle`
   in `73233.*.chunk.js` — see `c.classList.add("pageTitleWithLogo")`).
   Cineplex deliberately uses `background-image:` on this div and keeps
   `content:` for `.adminDrawerLogo img` (an `<img>`, where `content:`
   replaces the source). Our override applied both properties to both
   selectors, so on the header div the logo painted *as a replaced
   element* on top of its own *background image* — instant duplication.

Fix: split the rule by element type, drop the phantom selector entirely.

```css
/* ARRFLIX logo override (replace Cineplex branding) — 2026-05-08
   (fix: split rules, drop phantom .imgLogoIcon) */
.adminDrawerLogo img {
  /* <img> in admin sidebar drawer — content: replaces src */
  content: url("data:image/png;base64,<...ARRFLIX wordmark...>") !important;
}
.pageTitleWithLogo {
  /* <div> masthead on dashboard + login — bg image only, no content: */
  background-image: url("data:image/png;base64,<...ARRFLIX wordmark...>") !important;
}
```

Verified live (HTTP 204 on POST, then `GET /Branding/Configuration`):
single ARRFLIX wordmark on login, dashboard header, and admin sidebar.
Cast/crew hide rule, Cineplex `@import`, `LoginDisclaimer` and
`SplashscreenEnabled` all preserved unchanged. The bind-mounted
`/web/index.html` (favicon, `<title>ARRFLIX</title>`, `splashLogo`) was
not touched — that asset is owned by the index-patcher.

### 3b. ARRFLIX logo override fix re-applied 2026-05-08 (second time)

Re-curling `/System/Configuration/branding` after §3a was applied showed
the broken three-selector / dual-property rule was back: `.adminDrawerLogo
img, .imgLogoIcon, .pageTitleWithLogo { content: url(...); background-image:
url(...); }`. The §3a fix had been silently overwritten by a sibling agent
that POSTed a full branding payload (LoginDisclaimer + SplashscreenEnabled +
its own stale CustomCss) without first GETting the latest CustomCss. Because
the Jellyfin branding endpoint takes a complete object on every POST and
has no field-level merge, whichever POST lands last wins — there is no
locking, no ETag, no patch semantics. Fix re-applied surgically (split
selectors, drop `.imgLogoIcon`, preserve the data-URL bytes verbatim,
preserve the cast/crew hide, Cineplex `@import`, Quick Connect hide, and
both LoginDisclaimer/SplashscreenEnabled values) and re-verified via
`/Branding/Configuration`. **Operational rule:** any agent or script touching
`/System/Configuration/branding` must (a) GET first, (b) edit only the
fields it owns, (c) POST the full object, and the branding-CSS POST must
be the **last** POST in any sequence that touches this endpoint — otherwise
a later sibling POST will silently re-stack the logo. If you find yourself
about to POST branding for any reason, GET `/System/Configuration/branding`
first and confirm the override block matches the §3a skeleton before
sending.

### 3c. Header icon hide (2026-05-08): keep search, drop SyncPlay/Cast/User-menu

Top-right header had four buttons: SyncPlay (Create Group people-pair),
Cast (Chromecast triangle), Search (magnifying glass), User (account menu).
Goal: hide everything except Search. Selectors confirmed by grep against
the live JF 10.10.3 web bundle (`73233.*.chunk.js`): `headerSyncButton`,
`headerCastButton`, `headerSearchButton`, `headerUserButton` (also
`headerAudioPlayerButton` for the now-playing badge). Each is a class on
the `<button>` element, not an id, so the hide rules target the class
directly. Pure CSS appended to existing `CustomCss` via the standard
GET → edit → POST flow (no container restart, no `index.html` edit):

```css
/* Hide top-right header icons (keep Search) — 2026-05-08 */
.headerSyncButton { display: none !important; }
.headerCastButton { display: none !important; }
.headerUserButton { display: none !important; }
```

Rationale per button:
- **headerSyncButton** — SyncPlay group creation. Single-user / family box,
  no co-watching workflow yet (see §5b for the full SyncPlay context).
- **headerCastButton** — Chromecast picker. No Cast targets on this LAN,
  the button just opened an empty device list.
- **headerUserButton** — account/sign-out drop-down. Non-admins lose almost
  every entry in this menu after §4 lockdown anyway, and admins use the
  Dashboard wrench. Removing the icon eliminates the dead-end click.
- **headerSearchButton** — kept. Only navigation affordance left in the
  top-right. The CSS does not touch `.headerSearchButton` so its event
  handler is untouched and the icon still triggers the search drawer.
- The hamburger drawer toggle on the LEFT (`.headerHomeButton` /
  `.mainDrawerButton`) is also untouched.

Verified post-write via `GET /Branding/Configuration` that all earlier
rules are still present (Cineplex `@import`, cast/crew hide, ARRFLIX
logo override, Quick Connect hide, Settings drawer hide, LoginDisclaimer,
SplashscreenEnabled). POST returned 204; same operational rule from §3b
applies — this was the last branding POST in the sequence.

### 3d. Slider thumb white + pure-black background (2026-05-08)

Two small visual nits remained after §3c. (1) The OSD scrubber and volume
slider thumbs in the video player were rendered with the Material-UI
default primary tint (blue-ish circle), clashing against the otherwise
red/white/black Cineplex palette; we want pure white circles so the thumb
reads as a neutral "where am I" indicator and not a brand colour.
(2) The page surface throughout the SPA was a near-black grey
(roughly `#181818`, inherited from Jellyfin / Cineplex defaults) rather
than true `#000000`; on OLED displays and against the Netflix-style
artwork-edge fades this looked dusty. Both fixed with pure CSS appended
to `CustomCss`, no `index.html` edit, no container restart.

**Selectors verified against the live bundle.** `osdPositionSlider` and
`osdVolumeSlider` are visible in `playback-video-index-html.*.chunk.js`
and `90742.*.chunk.js` (grep on `/jellyfin/jellyfin-web/*.js`). The
inner `.MuiSlider-thumb` class is added at runtime by MUI's React
component, so it doesn't appear as a literal in the bundle but is the
documented MUI public API surface — overriding it directly (rather than
the `--mui-palette-primary-main` CSS variable) keeps the rest of the
button/control palette unchanged. Older Jellyfin builds used
`emby-slider .sliderThumb`, included as a belt-and-braces fallback.

```css
/* Tweak: white thumbs (2026-05-08) */
.MuiSlider-thumb,
.osdPositionSlider .MuiSlider-thumb,
.osdVolumeSlider .MuiSlider-thumb,
emby-slider .sliderThumb {
  color: #ffffff !important;
  background-color: #ffffff !important;
  border-color: #ffffff !important;
}
.MuiSlider-thumb:hover,
.MuiSlider-thumb.Mui-focusVisible,
.MuiSlider-thumb:active {
  box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.16) !important;
}

/* Tweak: pure black bg (2026-05-08) */
:root {
  --primary-background-color: #000000 !important;
  --background-color: #000000 !important;
}
html, body, .preload, .skinBody, .mainDrawerHandle {
  background-color: #000000 !important;
}
.skinHeader,
.skinHeader.semiTransparent,
.skinHeader.skinHeader-withBackground,
.mainAnimatedPages,
#reactRoot,
.dashboardDocument {
  background-color: #000000 !important;
}
```

Rationale notes:
- We deliberately did **not** override `--mui-palette-primary-main` at
  `:root` — that variable re-tints buttons, focus rings, and a handful
  of other accents globally. Scoping to `.MuiSlider-thumb` keeps the
  fix surgical.
- We kept the red track (`.MuiSlider-track`) and grey rail
  (`.MuiSlider-rail`) untouched; only the draggable thumb changed.
- For the background, both the Jellyfin shell variables
  (`--primary-background-color`, `--background-color`) and the concrete
  wrapper elements (`html`, `body`, `.skinHeader`, `.mainAnimatedPages`,
  `#reactRoot`, `.dashboardDocument`) are forced to `#000`. Belt and
  braces — different views render through different wrappers and the
  Cineplex import sometimes redeclares the variables.
- Screenshots: capture player chrome (scrubber + volume) and home/lib
  pages on next visual sweep; if poster cards visibly lose contrast
  against pure black, soften the card surface to `#0a0a0a` in a
  follow-up tweak rather than raising the page surface again.

POST returned 204. Verified via `GET /Branding/Configuration`: both
new blocks present, all prior blocks (Cineplex `@import`, cast/crew
hide, ARRFLIX logo override, Quick Connect hide, Settings drawer hide,
header icon hide) preserved verbatim. Same race rule applies — this is
the last branding POST in the sequence.

### 3e. ElegantFin migration with ARRFLIX recolor (2026-05-08, current)

Later on 2026-05-08, the active theme was migrated **from Cineplex to
ElegantFin v25.12.31** while preserving the ARRFLIX brand: Netflix-red
`#E50914` accent overrides over ElegantFin's default Jellyseerr-blue/
violet palette, plus the existing ARRFLIX wordmark logo. The owner had
seen the demo at <https://lscambo13.github.io/ElegantFin/>, liked
ElegantFin's polished browsing UI more than Cineplex's purer Netflix
fidelity, and asked for the swap with the brand colour kept intact.

**Snapshot tag for rollback (committed and pushed before any change):**
`snapshot-2026-05-08-pre-elegantfin`. Captures `branding.json`,
`index.html`, `docker-compose.yml`, all per-user `displayprefs-*.json`,
`users.json`, `libraries.json`, plus `RESTORE.md` with three concrete
rollback commands. Located at `snapshots/2026-05-08-pre-elegantfin/`.

**ElegantFin tag pinned: `v25.12.31`** (latest tag at migration time;
list resolved via `git ls-remote --tags https://github.com/lscambo13/ElegantFin.git`).
jsDelivr serves tagged refs immutably with year-long cache TTL — same
no-surprise-update guarantee we had on `cineplex@v1.0.6`. To opt into
upstream churn, edit the URL to `@main`; to pin a different tag, edit
the version segment.

**ElegantFin import:**

```css
@import url("https://cdn.jsdelivr.net/gh/lscambo13/ElegantFin@v25.12.31/Theme/ElegantFin-jellyfin-theme-build-latest-minified.css");
```

**Accent variables overridden (ARRFLIX recolor block).** ElegantFin
declares its accent palette through CSS custom properties at `:root`.
Eight variables were identified by grepping the minified theme for
`--[a-z]*` definitions and inspecting their default values; all eight
are remapped to `#E50914` (or its `rgba()` form for alpha variants):

| Variable | ElegantFin default | ARRFLIX value | What it controls |
|---|---|---|---|
| `--uiAccentColor` | `rgb(117 111 226)` (violet) | `#E50914` | Primary UI accent — most surfaces |
| `--activeColor` | `rgb(119,91,244)` (violet) | `#E50914` | Active / focused state highlights |
| `--activeColorAlpha` | `rgba(119,91,244,.9)` | `rgba(229, 9, 20, 0.9)` | Same with alpha — hover overlays |
| `--osdSeekBarPlayedColor` | `var(--textColor)` (white) | `#E50914` | Played portion of the video scrubber |
| `--checkboxCheckedBgColor` | `rgb(79,70,229)` (indigo) | `#E50914` | Checked checkboxes (settings, lib pickers) |
| `--highlightOutlineColor` | `rgb(37,99,235)` (blue) | `#E50914` | Focus / highlight outlines on cards |
| `--btnSubmitColor` | `rgb(61,54,178)` (indigo) | `#E50914` | "Submit" button background |
| `--btnSubmitBorderColor` | `rgb(117 111 226)` (violet) | `#E50914` | "Submit" button border |

Override block:

```css
:root {
  --uiAccentColor: #E50914 !important;
  --activeColor: #E50914 !important;
  --activeColorAlpha: rgba(229, 9, 20, 0.9) !important;
  --osdSeekBarPlayedColor: #E50914 !important;
  --checkboxCheckedBgColor: #E50914 !important;
  --highlightOutlineColor: #E50914 !important;
  --btnSubmitColor: #E50914 !important;
  --btnSubmitBorderColor: #E50914 !important;
}
```

Variables deliberately NOT changed:
- `--osdSeekBarThumbColor: white` — kept the explicit white-thumb rule
  from §3d (white thumbs read as a neutral position indicator, not as
  brand colour). The slider-thumb override in this doc's §3d still
  applies.
- `--drawerColor`, `--headerColor` — kept ElegantFin's translucent
  blur over its dark-blue surface; these are structural, not accent.
- `--borderColor`, `--textColor` — typography / structure, not accent.

**Logo selectors used.** ElegantFin does NOT define rules for the two
ARRFLIX logo selectors (verified by grepping the minified theme for
`adminDrawerLogo` and `pageTitleWithLogo` — zero matches), so the same
override skeleton from §3a/§3b is re-applied verbatim against the
ElegantFin base:

```css
.adminDrawerLogo img {
  /* <img> in admin sidebar drawer — content: replaces src */
  content: url("data:image/png;base64,<...ARRFLIX wordmark...>") !important;
}
.pageTitleWithLogo {
  /* <div> masthead on dashboard + login — bg image only, no content: */
  background-image: url("data:image/png;base64,<...ARRFLIX wordmark...>") !important;
}
```

The data-URL bytes are byte-for-byte identical to the Cineplex-era
override (extracted from the snapshot's `branding.json` and re-inlined
into the new `CustomCss` payload). Both selectors are still split-rule
form (per the §3a/§3b lesson — never combine `content:` and
`background-image:` on the same selector).

**Preserved blocks** (every custom rule from the Cineplex era was
re-applied on top of ElegantFin):
- `#castCollapsible, #guestCastCollapsible { display: none }` — cast/crew sections hidden
- `.btnQuick { display: none }` — Quick Connect login button hidden
- `.headerSyncButton`, `.headerCastButton`, `.headerUserButton` — top-right header icons hidden (§3c)
- `.MuiSlider-thumb` + variants — white scrubber/volume thumbs (§3d)
- `:root { --primary-background-color: #000000; --background-color: #000000; }` and the wrapper-element rules — pure black bg (§3d)
- `mypreferencesmenu` selectors — Settings drawer entry hidden
- `.countIndicator { display: none }` — unwatched-episode count badges hidden
- `.adminDrawerLogo img` / `.pageTitleWithLogo` — ARRFLIX wordmark override
- `LoginDisclaimer` — `"Welcome to ARRFLIX - Private invite only service"` preserved
- `SplashscreenEnabled: true` — preserved

**Verification (executed 2026-05-08):**
- POST to `/System/Configuration/branding` → HTTP 204
- GET on `/Branding/Configuration` → no Cineplex `@import`, ElegantFin
  `@import` present and pinned to `v25.12.31`, ARRFLIX logo data URL
  intact on both selectors, all preserved blocks intact, all eight
  accent variable overrides present
- HEAD on `https://arrflix.s8n.ru/` → HTTP 302 (Traefik redirect to
  `web/`, baseline behaviour — proxy still serving)

**Operational notes:**
- The bind-mounted `/web/index.html` was NOT touched (sibling work owns
  that file via the index-patcher). All visual changes ride on
  `CustomCss` via the public `/Branding/Configuration` consumer + the
  authenticated `/System/Configuration/branding` writer.
- No container restart, no `docker compose` action, no Traefik change.
- Same race rule from §3b applies — the branding POST in this migration
  was the **last** POST in the sequence.

**Rollback** — see `snapshots/2026-05-08-pre-elegantfin/RESTORE.md`,
or in one shot: `git checkout snapshot-2026-05-08-pre-elegantfin --
snapshots/2026-05-08-pre-elegantfin/branding.json` then POST it back
to `/System/Configuration/branding`.

---

## 4. Multi-user UX prep

### 4a. Library inventory

| Library | Type | ItemId |
|---|---|---|
| Movies | movies | `f137a2dd21bbc1b99aa5c0f6bf02a805` |
| TV Shows | tvshows | `767bffe4f11c93ef34b805451a696a4e` |
| Playlists | playlists | `1071671e7bffa0532e930debee501d2e` |

### 4b. Existing users

| Name | UserId | Admin? |
|---|---|---|
| s8n | `2be0f0d3fe3a45dc9298138a15a01925` | yes |

### 4c. Creating a new user (UI)

1. Dashboard → Users → "+ Add User".
2. Username + initial password. Tick "User can manage server" OFF.
3. After creation, click the user → tabs:
   - **Profile**: language, audio default, subtitle default. Set per
     user; doesn't have to match server defaults.
   - **Library Access**: untick "Enable access to all libraries", tick
     only the libraries this user should see.
   - **Parental Control**: max rating, blocked tags, access schedule.
   - **Password**: set / reset.

### 4d. Creating a new user (API) — playbook

> **Do not run this without explicit user request.** Documented for the
> friend account that will exist later.

```bash
TOKEN=<JELLYFIN_API_TOKEN>
TVSHOWS_ID=767bffe4f11c93ef34b805451a696a4e

# 1. Create the user (auth header REQUIRED — admin token).
NEW_USER=$(curl -sS -X POST \
  -H "X-Emby-Token: $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"Name":"friend","Password":"<initial-password>"}' \
  https://arrflix.s8n.ru/Users/New)
echo "$NEW_USER" | python3 -m json.tool
NEW_ID=$(echo "$NEW_USER" | python3 -c "import sys,json; print(json.load(sys.stdin)['Id'])")
echo "NEW_ID=$NEW_ID"

# 2. Tighten the policy: TV-only, non-admin, can change own prefs,
#    no content deletion, SyncPlay enabled (so we can co-watch).
cat > /tmp/policy.json <<EOF
{
  "IsAdministrator": false,
  "IsHidden": false,
  "IsDisabled": false,
  "EnableContentDeletion": false,
  "EnableUserPreferenceAccess": true,
  "EnableRemoteAccess": true,
  "EnableSharedDeviceControl": false,
  "EnableLiveTvAccess": false,
  "EnableLiveTvManagement": false,
  "EnableMediaPlayback": true,
  "EnableAudioPlaybackTranscoding": true,
  "EnableVideoPlaybackTranscoding": true,
  "EnablePlaybackRemuxing": true,
  "EnableAllFolders": false,
  "EnabledFolders": ["$TVSHOWS_ID"],
  "EnableAllChannels": false,
  "EnabledChannels": [],
  "EnableAllDevices": true,
  "BlockedTags": [],
  "BlockedMediaFolders": [],
  "MaxParentalRating": null,
  "AccessSchedules": [],
  "SyncPlayAccess": "CreateAndJoinGroups",
  "InvalidLoginAttemptCount": 0,
  "LoginAttemptsBeforeLockout": 5,
  "MaxActiveSessions": 0
}
EOF

curl -sS -X POST \
  -H "X-Emby-Token: $TOKEN" \
  -H "Content-Type: application/json" \
  --data-binary @/tmp/policy.json \
  "https://arrflix.s8n.ru/Users/$NEW_ID/Policy"
# expect: HTTP 204

# 3. Verify
curl -sS -H "X-Emby-Token: $TOKEN" \
  "https://arrflix.s8n.ru/Users/$NEW_ID" | python3 -m json.tool
```

### 4e. Policy field cheat-sheet

| Field | What it does | Recommended for `friend` |
|---|---|---|
| `IsAdministrator` | Full server admin | **false** |
| `EnableContentDeletion` | Can delete media items via UI | **false** |
| `EnableUserPreferenceAccess` | Change own profile/audio/sub prefs | **true** |
| `EnableAllFolders` | Master switch for library ACL | **false** |
| `EnabledFolders` | Whitelist of CollectionFolder Ids | `[TVShows]` (only) |
| `BlockedTags` | Skip items tagged with these | optional; e.g. `["adult","unrated"]` |
| `MaxParentalRating` | Hide above this rating | `null` for friend (adult). Set `15` for a kid. |
| `AccessSchedules` | Day-of-week + time windows | `[]` (no restriction) |
| `SyncPlayAccess` | `CreateAndJoinGroups` / `JoinGroups` / `None` | `CreateAndJoinGroups` |
| `MaxActiveSessions` | Concurrent sessions cap; 0 = unlimited | `2` if you want to throttle |
| `LoginAttemptsBeforeLockout` | Brute-force protection | `5` |
| `EnableLiveTvAccess` / `Management` | Live TV / DVR | **false** (we don't run it) |

### 4f. Password reset flow

The friend forgot their password. Two routes:

- **Self-serve (only if SMTP is configured — we don't currently)**: login
  page → "Forgot Password". Jellyfin emits a PIN file at
  `/config/data/passwordreset-*.json` valid 30 minutes. Without SMTP, the
  admin reads the PIN out of the container and gives it to the friend.
- **Admin reset (what we'll do)**:

```bash
curl -sS -X POST \
  -H "X-Emby-Token: $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"NewPw":"<new-password>","ResetPassword":false}' \
  "https://arrflix.s8n.ru/Users/$USER_ID/Password"
```

To clear the password entirely (forces friend to set one on next login):
same call with `"ResetPassword": true` and no `NewPw`.

### 4g. Quick Connect — disabled (2026-05-08)

Quick Connect is Jellyfin's 6-digit-code device pairing flow. ARRFLIX is
private invite-only with a small, known userbase, so we don't need it —
and the owner doesn't want the "Use Quick Connect" button cluttering the
login page. Disabled at both the server-config and CSS layers:

**1. Server-side disable (the canonical fix).** In 10.10.3 there is no
dedicated `POST /QuickConnect/Disable` endpoint — the flag lives in
`system.xml` as `QuickConnectAvailable` and is toggled via the system
config API:

```bash
# Pull current config, flip the flag, push back.
curl -s -H "Authorization: MediaBrowser Token=\"$TOKEN\"" \
  https://arrflix.s8n.ru/System/Configuration > /tmp/cfg.json
jq '.QuickConnectAvailable = false' /tmp/cfg.json > /tmp/cfg.new.json
curl -s -X POST -H "Authorization: MediaBrowser Token=\"$TOKEN\"" \
     -H "Content-Type: application/json" \
     --data-binary @/tmp/cfg.new.json \
     https://arrflix.s8n.ru/System/Configuration
# expect: HTTP 204

# Verify
curl -s -H "Authorization: MediaBrowser Token=\"$TOKEN\"" \
     https://arrflix.s8n.ru/QuickConnect/Enabled
# expect: false
```

**2. CSS hide as belt-and-braces.** The login button in the web bundle
has class `.btnQuick` (verified in
`session-login-index-html.c73c6453a153f384f752.chunk.js`). Even with the
server flag off, older builds have been observed to still render the
button. Appended to CustomCss:

```css
/* Hide Quick Connect button on login page (server-side disabled too) */
.btnQuick { display: none !important; }
```

Pushed via `POST /System/Configuration/branding` (the `/Branding/...`
namespace is read-only — write goes through `/System/Configuration/<key>`).
Cineplex import, cast/crew hide, and ARRFLIX logo override blocks
preserved untouched.

**Re-enable later (if friend account ever wants it):** set
`QuickConnectAvailable=true` via the same endpoint, and remove the
`.btnQuick` rule from CustomCss.

### 4h. Per-user defaults (profile UI)

Set on each user's profile page (or via `/Users/{id}/Configuration` API):

- `AudioLanguagePreference`: `eng`
- `SubtitleLanguagePreference`: `eng`
- `SubtitleMode`: `Smart` (only show when audio differs) or `Always`.
- `PlayDefaultAudioTrack`: true.
- Display language: pick on first login.

---

## 5. Watching together / continue-watching

### 5a. Resume / Next Up / Up Next — how Jellyfin builds them

- **Continue Watching** ("Resume" row): items where `UserData.PlaybackPositionTicks > 0`
  and not yet `Played: true`. Threshold for "watched" is server-side
  ~90% by default. Per-user.
- **Next Up**: for series the user has started, Jellyfin walks the
  next unwatched episode in season/episode order. Configurable in
  Dashboard → Display → Next Up (max age, rewatching toggle).
- **Up Next** (the in-player auto-advance card): client-side feature in
  the web/mobile players, fed by the same Next Up logic.

No action needed — these light up automatically once a user has played
something. Futurama is loaded, so as soon as anyone plays an episode,
the homepage gets populated.

### 5b. SyncPlay (synchronised group playback)

Server-side: nothing to enable, ships on. Per-user permission lives in
`Policy.SyncPlayAccess`:

| Value | Meaning |
|---|---|
| `CreateAndJoinGroups` | Can start a SyncPlay group + invite | (s8n + recommended for friend) |
| `JoinGroups` | Can only join existing groups | useful for kid accounts |
| `None` | Disabled | — |

Verified current state: `s8n.SyncPlayAccess = CreateAndJoinGroups` ✓.

**How to use**:

1. s8n opens a series episode and starts playing.
2. Player overlay → top-right people-icon ("SyncPlay") → "Create group".
3. Friend logs in (any device — same `arrflix.s8n.ru`), opens the same item
   or the SyncPlay menu → "Join {s8n}'s group".
4. Anyone in the group's play/pause/seek is mirrored within ~1 second.
5. Voice chat is up to you — Jellyfin doesn't bundle one (Matrix room
   on `txt.s8n.ru` works fine; or just a phone call).

Caveat: SyncPlay uses WebSockets. Our reverse proxy (`traefik`) handles
WS by default, no changes needed.

---

## 6. Maintenance

### 6a. Updating the theme

We currently pin Cineplex to `@v1.0.6` (immutable) — no auto-updates,
no surprise breakage. To opt into upstream changes:

```bash
# Move from immutable tag to floating @main (pulls future commits;
# jsDelivr cache TTL is up to 7d for floating refs).
curl -sS --resolve arrflix.s8n.ru:443:192.168.0.100 \
  -X POST -H "X-Emby-Token: $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"CustomCss": "@import url(\"https://cdn.jsdelivr.net/gh/MRunkehl/cineplex@main/cineplex.css\");\n#castCollapsible, #guestCastCollapsible { display: none !important; }", "LoginDisclaimer": "Welcome to arrflix.s8n.ru — LAN-only. Be kind, rewind.", "SplashscreenEnabled": true}' \
  https://arrflix.s8n.ru/System/Configuration/branding
```

Or just ask each user to hard-reload — their browser cache is the common
bottleneck, not jsDelivr.

When upgrading Jellyfin (e.g. 10.10.3 → 10.10.7+ → 10.11.x), check the
[Cineplex commits](https://github.com/MRunkehl/cineplex/commits/main)
and the README compatibility line. Cineplex's stated floor is 10.10.7,
so going forward in the 10.10 series is safe; jumping to 10.11 needs a
re-test (selectors changed in some 10.11 release notes). If something
regresses, pin back to `@v1.0.6`.

### 6b. Reverting to ElegantFin (or vanilla)

Replace the `@import` line:

```bash
# Back to ElegantFin (Jellyseerr-style):
curl -sS --resolve arrflix.s8n.ru:443:192.168.0.100 \
  -X POST -H "X-Emby-Token: $TOKEN" -H "Content-Type: application/json" \
  -d '{"CustomCss": "@import url(\"https://cdn.jsdelivr.net/gh/lscambo13/ElegantFin@v25.12.31/Theme/ElegantFin-jellyfin-theme-build-latest-minified.css\");\n#castCollapsible, #guestCastCollapsible { display: none !important; }", "LoginDisclaimer": "Welcome to arrflix.s8n.ru — LAN-only. Be kind, rewind.", "SplashscreenEnabled": true}' \
  https://arrflix.s8n.ru/System/Configuration/branding

# To vanilla Jellyfin (clear everything):
curl -sS --resolve arrflix.s8n.ru:443:192.168.0.100 \
  -X POST -H "X-Emby-Token: $TOKEN" -H "Content-Type: application/json" \
  -d '{"CustomCss": "", "LoginDisclaimer": "", "SplashscreenEnabled": false}' \
  https://arrflix.s8n.ru/System/Configuration/branding
```

Or in the UI: Dashboard → General → edit / clear "Custom CSS code" →
Save. Hard-reload browsers afterward.

### 6c. Pinning a known-good revision

Cineplex is already pinned to `@v1.0.6`. If a future tag (e.g. `v1.0.7`)
ships and is good, bump the URL. jsDelivr serves `@<tag>` immutably and
forever. Tag list: <https://github.com/MRunkehl/cineplex/tags>.

---

## 7. First-30-minutes UX checklist (new user)

When the friend gets their account, walk them through this **once**:

1. **Login** → see the LAN-only disclaimer; that's the right server.
2. **Profile picture** → set one (just helps SyncPlay group UX).
3. **Display preferences** (top-right user icon → Display):
   - Theme: keep "Dark" (Cineplex is dark-only — Netflix-black `#181818`
     base; light theme will look half-applied). Don't switch.
   - Landing screen: Home.
4. **Playback preferences**:
   - Default audio language: `English`.
   - Default subtitle language: `English`.
   - Subtitle mode: `Smart` (auto-show on foreign audio).
   - "Play next episode automatically": on (this is what enables Up Next).
5. **Quality** — first-time playback test on Futurama:
   - Pick S01E01, play. Click the gear → quality. If it stutters on
     1080p, drop to 720p; transcoder is CPU-only on nullstone today
     (GTX 1660 Ti driver still broken — see `README.md`).
   - Once confirmed playing, that quality is remembered per device.
6. **SyncPlay test**: friend in one tab, s8n in another, friend joins
   s8n's group, confirm play/pause syncs. (Drops the "do you have it
   running" question forever.)
7. **Mobile/TV**: install Jellyfin app, server URL `https://arrflix.s8n.ru`
   (must be on LAN or Tailscale), Quick Connect or password.
8. **Bookmarks/RSS**: there isn't one — Jellyfin's "Latest" row is the
   substitute. Friend can favourite shows (heart icon) to pin.

---

## 8. Open items / future work

- [ ] Enable Quick Connect when friend account is created (Dashboard →
      General → Quick Connect).
- [ ] Configure SMTP for self-serve password reset (currently admin-only).
- [ ] Get Traefik to issue a SNI cert for `arrflix.s8n.ru` so the curl
      examples don't need `--resolve arrflix.s8n.ru:443:192.168.0.100`. Until
      then, both names point to the same backend on `192.168.0.100` but
      only `arrflix.s8n.ru` has a valid cert.
- [ ] Watch [Cineplex commits](https://github.com/MRunkehl/cineplex/commits/main)
      monthly; if a `v1.0.7` lands and looks safe, bump the pin.
- [ ] Add a 2nd library (movies are mounted but the server may have an
      empty Movies folder — confirm with friend's first ask).
- [ ] After GPU driver fix on nullstone, NVENC transcode → 1080p HEVC
      will stop being CPU-bound; revisit per-user quality defaults.
- [ ] Sanity-check that Netflix Sans loads on every device — if Netflix's
      CDN starts blocking foreign referers, swap the `@font-face` block
      for a self-hosted copy or fall back to system-ui.