gui: native-backend session work + fix shim crashes; add page smoke test

Bundles the pending native-UI session (dark shell, style overhaul, audio
page) with review fixes:
- native Row: set_subtitle_lines + set_activatable_widget (store and
  online-accounts pages crashed with AttributeError under TANINUX_UI=native)
- wine page routed through the ui seam (last direct Adw import removed)
- console: delete no-op log_expander/collapsible_log and .clear() call sites
- ui/__init__ docstring now states the actual default backend (native)
- tests/test_pages_native.py builds every registered page under the native
  backend (29 pass; skips headless)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

HANDOVER.md

@@ -177,3 +177,117 @@ Installed to `~/.local/share/icons/Tanin-*` (user dir, not pacman).
 - `camel.toml` `rebuilt_aur` list is stale (missing librewolf-bin, arch-update,
   timeshift-autosnap, xdg-terminal-exec).
 - Manual icon picker in `desktop.py` still lists all 5 `Tanin-*` themes (minor).
+
+---
+
+## SESSION 2026-06-27 — TANINUX Music scaffold (native TIDAL client, "Weg 3")
+
+New package `src/taninux/music/` — a native Apple-Music-style TIDAL client. Strategy:
+**reuse High Tide's UI-free backend, build our own native shell** (no libadwaita fork).
+High Tide's shell is built on heavy Adw layout widgets (NavigationView, OverlaySplitView,
+MultiLayoutView, Breakpoints, Carousel) that have no plain-GTK4 equivalent and that our
+`native.py` does NOT cover — so forking its UI was rejected. Its *backend* (~1650 LOC:
+GStreamer player, tidalapi session, token store) is cleanly decoupled and worth reusing.
+
+### Structure
+- `backend/player.py` — copied verbatim from High Tide's `lib/player_object.py` (GPL-3.0),
+  except ONE edit: `from . import discord_rpc, utils` → `from . import discord_rpc` +
+  `from . import state as utils`. Player's only coupling to the old god-`utils` was 4 names
+  (`CACHE_DIR`, `MUSIC_DIR`, `session`, `send_toast`) — all provided by `state.py`.
+- `backend/state.py` — slim shim providing those 4 names + `init()`/`set_session()`/`set_toast_sink()`.
+- `backend/secret_store.py` — copied from High Tide (LGPL-3.0), schema/key renamed to TANINUX.
+- `backend/auth.py` — extracted PKCE flow (was in an Adw.Dialog): `Auth.try_restore()` /
+  `pkce_login_url()` / `finish_pkce_login()` + `login_async()`.
+- `backend/discord_rpc.py` — no-op stub (player calls `set_activity`/`disconnect`).
+- `ui/transport.py` — bottom now-playing bar, binds to player GObject signals
+  (`song-changed`, `update-slider`, `notify::playing`, `can-go-*`). Async cover fetch.
+- `ui/library.py` — favorites-tracks list; row-activate → `player.play_this(tracks, i)`.
+- `ui/login_dialog.py` — native `ui.Dialog` PKCE login (tidalapi imported lazily inside).
+- `window.py` — shell: sidebar (nav) + `Gtk.Stack` content + transport bar. `tn-dark`.
+- `app.py` — entry `tmusic`. Lazy-imports player/auth (so app loads without tidalapi → shows
+  "backend missing" StatusPage). Flow: CSS → state.init → Auth → try_restore? → shell ±login.
+- CSS appended to `gui/ui/style_apple.css` (section "TANINUX Music"): `.tn-transport`,
+  `.tn-content`, `.tn-track-list`, `.tn-music-sidebar`. Reuses existing `.tn-sidebar`.
+- Entry point added to `pyproject.toml`: `tmusic = "taninux.music.app:main"`.
+
+### Verified
+- All new files `py_compile` clean. Backend `state`/`discord_rpc` import without tidalapi/Adw.
+- All UI+app modules import without tidalapi (lazy imports hold).
+
+### NOT verified (needs real env)
+- End-to-end playback: `tidalapi` is NOT installed here, and there's no TIDAL account/display
+  in the sandbox. **To run:** `pacman -S python-tidalapi` (or `pip install tidalapi`), then
+  `PYTHONPATH=src python -m taninux.music` (or `tmusic` after install). Expect: login dialog →
+  paste redirect URL → library loads → click track → GStreamer plays → transport updates.
+
+### Next building blocks (all go into the content `Gtk.Stack`)
+- Home page (mixes/recommendations carousels) and Search page (currently placeholders).
+- The "few missing native layout widgets" if richer nav is wanted: a NavigationStack
+  (push/pop with back button) and horizontal carousels. v1 deliberately uses a flat `Gtk.Stack`.
+- Toast sink: `state.set_toast_sink(...)` is wired but app currently leaves the default (logs).
+
+---
+
+## SESSION 2026-06-27 (cont.) — TANINUX Music FULL build + playback verified
+
+User gave full autonomy ("entwickle die app komplett aus"). The scaffold above is now a
+working app. **Playback verified end-to-end** via a headless test (logged-in PKCE session →
+favorite track → GStreamer pipeline reached PLAYING, position advanced to 8.2s).
+
+### Login: must be PKCE, not device-flow (IMPORTANT)
+- tidalapi has TWO clients. The OAuth **device-flow** (`session.login_oauth()`, the smooth
+  `link.tidal.com/XXXXX` flow) logs in and can BROWSE, but **cannot stream** — playback hits
+  `429 Too Many Requests` on `playbackinfopostpaywall`. tidalapi docstring: PKCE "is the only
+  way" to stream.
+- So login uses **PKCE** (`auth.pkce_login_url()` → browser → copy the redirect/"Oops" URL →
+  `finish_pkce_login`). `LoginDialog` auto-opens the browser, shows a clickable link, AND
+  watches the clipboard (`Gdk.Clipboard.read_text_async` poll) so pasting is automatic.
+- `auth.try_restore()` discards any stored NON-pkce token (`is-pkce` flag in keyring) to force
+  a PKCE re-login. Tokens persist in libsecret → normally no dialog on subsequent launches.
+
+### Runtime deps installed this session (pacman)
+- `python-tidalapi` (extra) — the API/player lib.
+- `gst-libav` + `gst-plugins-bad` + `gst-plugins-ugly` — **required for audio**. Without them
+  GStreamer can't decode TIDAL's AAC/DASH streams ("No suitable plugins found", no sound).
+  Key elements now present: `avdec_aac`, `avdec_flac`, `faad`, `dashdemux2`.
+- These are NOT expressible in pyproject; package them as distro deps for the [tanin] repo.
+
+### Architecture (all under src/taninux/music/)
+- `backend/api.py` — thin tidalapi data layer (UI-free): `home/explore/for_you_categories`,
+  `search`, favorites/playlists, `album_tracks`/`playlist_tracks`/`mix_items`/`artist_*`,
+  item classification (`item_kind/title/subtitle`), `IdCache`. NOTE: `session.home()` returns
+  400 sometimes → `home_categories()` falls back to legacy endpoint, and HomePage also pulls
+  `explore()` + `for_you()`.
+- `ui/images.py` — async cover loader, disk cache under `state.IMG_DIR`, sets `Gdk.Texture`
+  on `Gtk.Picture`.
+- `ui/nav.py` — `NavigationStack` (back button + title + content; set_root/push/pop). Replaces
+  Adw.NavigationView.
+- `ui/context.py` — `MusicContext(session, player, nav, toast)`; `open_item(item)` classifies +
+  pushes the right detail page; `play/shuffle`. Passed to all pages/widgets (no globals).
+- `ui/widgets.py` — `Card` (cover+title+sub, click→open_item), `Carousel` (titled h-scroll),
+  `TrackList` (row-activate → play).
+- `ui/pages_base.py` — `LoadablePage` (spinner → thread fetch() → main-thread build()).
+- `ui/pages_home.py`, `pages_search.py` (live clipboard-less SearchEntry → debounced search),
+  `pages_detail.py` (Album/Playlist/Mix share `_TrackDetailPage`; ArtistPage), `pages_collection.py`
+  (Bibliothek: playlists/albums/artists/tracks), `pages_queue.py`.
+- `window.py` — shell: sidebar (Home/Suchen/Bibliothek) → `nav.set_root`; Gtk.Overlay for
+  toasts; `TransportBar` at bottom. `reload_after_login()`.
+- `ui/transport.py` — now-playing bar: cover, prev/play/next, seek, shuffle/repeat/queue, volume.
+- `backend/mpris.py` — ported from High Tide, DECOUPLED: `MPRIS(player, app_id, raise_cb, quit_cb)`,
+  cover path via `state.IMG_DIR`. Verified on bus as `org.mpris.MediaPlayer2.ch.gabrielevarano.Taninux.Music`.
+- `app.py` — entry `tmusic`. CSS → state.init → Auth → try_restore? → shell ±PKCE login; wires
+  toast sink + starts MPRIS (both non-fatal).
+- CSS: "TANINUX Music" section in `gui/ui/style_apple.css` (cards/covers/carousel/transport/
+  toast/nav + title-1/title-3/dim-label/error fallbacks).
+
+### Known minor issues / TODO
+- Cosmetic GTK warning "GtkGizmo (slider) reported min width -4" from a `Gtk.Scale` — harmless.
+- Per-section nav stacks are not preserved: switching sidebar resets that section to its root
+  (Apple keeps a stack per tab). Acceptable for v1.
+- Queue page is read-only (no reorder/remove). No lyrics page. `discord_rpc` is a no-op stub.
+- DONE (2026-06-27 cont.): track→album/artist navigation — TrackRow has a "⋯" MenuButton +
+  right-click popover (Zum Album / Zum Interpreten / Als Nächstes / Zur Warteschlange); the
+  transport bar's title→album and artist→artist are clickable (`.tn-link`). Carousel cards
+  already opened detail pages. Sidebar switched to the Settings `.tn-nav` look (glassy accent
+  wash + a frost gradient on `window.tn-dark .tn-sidebar`).
+- Search is debounced via SearchEntry's `search-changed`; could add a small delay/throttle.

src/taninux/gui/app.py

@@ -35,7 +35,7 @@ class _ShellApp(ui.Application):
 
 
 def main_settings(argv: list[str] | None = None) -> int:
-    app = _ShellApp(f"{APP_ID}.Settings", "System Settings", SETTINGS_SECTIONS)
+    app = _ShellApp(f"{APP_ID}.Settings", "Settings", SETTINGS_SECTIONS)
     return app.run(argv if argv is not None else sys.argv)
 
 

src/taninux/gui/console.py

@@ -1,9 +1,8 @@
 """Log console — writes to ~/.local/share/taninux/taninux.log (no UI widget).
 
 All LogConsole.append_line() calls now write timestamped lines to the log file
-instead of displaying them in a scrollable in-app widget. The log_expander()
-and collapsible_log() helpers are kept as no-ops so callers can be cleaned up
-incrementally, but they return None and must not be added to the page.
+instead of displaying them in a scrollable in-app widget. LogConsole.clear() is
+a no-op kept only for API stability (the file log is append-only).
 """
 from __future__ import annotations
 
@@ -41,11 +40,6 @@ class LogConsole:
         _write_log(text)
 
 
-def collapsible_log(console: LogConsole, *, title: str = "Log") -> None:
-    """Removed — log is now written to file. Returns None."""
-    return None
-
-
 class RunnerCard(Gtk.Box):
     """Konsole + Action-Button, verdrahtet mit einem ProcessRunner."""
 
@@ -87,9 +81,3 @@ class RunnerCard(Gtk.Box):
         _write_log("")
         _write_log(f"✔ done (exit {code})" if code == 0 else f"✘ exit {code}")
         self._button.set_sensitive(True)
-
-
-def log_expander(console: LogConsole, *, title: str = "Log",
-                 expanded: bool = False) -> None:
-    """Removed — log is now written to file. Returns None."""
-    return None

src/taninux/gui/pages/audio.py

@@ -84,7 +84,6 @@ def _stream_row(st: audio.Stream) -> ui.Row:
     scale.set_size_request(200, -1)
     scale.set_draw_value(False)
     scale.set_valign(Gtk.Align.CENTER)
-    scale.add_mark(100, Gtk.PositionType.BOTTOM, None)
 
     mute_btn = Gtk.ToggleButton()
     mute_btn.add_css_class("flat")
@@ -138,7 +137,6 @@ def _audio_group(kind: str, title: str, icon_on: str, icon_off: str) -> ui.Group
     scale.set_size_request(220, -1)
     scale.set_draw_value(False)
     scale.set_valign(Gtk.Align.CENTER)
-    scale.add_mark(100, Gtk.PositionType.BOTTOM, None)  # 100%-Markierung
 
     pct = Gtk.Label()
     pct.add_css_class("dim-label")

src/taninux/gui/pages/network.py

@@ -82,7 +82,6 @@ def build() -> Gtk.Widget:
 
     def _connect(net: network.WifiNet, saved: bool) -> None:
         def do(pw: str) -> None:
-            console.clear()
             runner.run(network.connect_argv(net.ssid, pw))
         # Gesichert, aber schon gespeichert -> ohne Passwort-Dialog verbinden.
         if net.security and not saved:
@@ -94,12 +93,10 @@ def build() -> Gtk.Widget:
         argv = network.disconnect_argv()
         if not argv:
             return
-        console.clear()
         runner.run(argv)
 
     def _forget(net: network.WifiNet) -> None:
         def do() -> None:
-            console.clear()
             runner.run(network.forget_argv(net.ssid))
         confirm.confirm(
             refresh,

src/taninux/gui/pages/store.py

@@ -63,7 +63,6 @@ def build() -> Gtk.Widget:
 
     def _act(item: pkgsearch.Result, btn: Gtk.Button) -> None:
         argv, priv = (pkgsearch.remove_argv if item.installed else pkgsearch.install_argv)(item)
-        console.clear()
         btn.set_sensitive(False)
         runner.run(argv, privileged=priv)
 

src/taninux/gui/pages/wine.py

@@ -16,8 +16,7 @@ from pathlib import Path
 import gi
 
 gi.require_version("Gtk", "4.0")
-gi.require_version("Adw", "1")
-from gi.repository import Adw, GLib, Gio, Gtk  # noqa: E402
+from gi.repository import GLib, Gio, Gtk  # noqa: E402
 from taninux.gui import ui
 
 from taninux.core import pacman
@@ -239,14 +238,12 @@ def build() -> Gtk.Widget:
     # ── Actions ────────────────────────────────────────────────────────────
 
     def _run_privileged(argv: list[str]) -> None:
-        console.clear()
         runner.run(argv, privileged=True)
 
     def _run_winetricks(verb: str) -> None:
         prefix = _state["prefix"]
         if prefix is None:
             return
-        console.clear()
         runner.run(winecore.winetricks_argv(prefix, verb))
 
     def _pick_exe(prefix: Path) -> None:
@@ -277,13 +274,12 @@ def build() -> Gtk.Widget:
             if f is None:
                 return
             exe = Path(f.get_path())
-            console.clear()
             runner.run(winecore.run_exe_argv(prefix, exe))
 
         dialog.open(page.get_root(), None, _done)
 
     def _new_prefix_dialog(_btn: Gtk.Widget) -> None:
-        dlg = Adw.AlertDialog.new("New Wine Prefix", None)
+        dlg = ui.AlertDialog(heading="New Wine Prefix", body="")
 
         box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=8)
         box.set_margin_top(12)
@@ -304,7 +300,7 @@ def build() -> Gtk.Widget:
         dlg.set_extra_child(box)
         dlg.add_response("cancel", "Cancel")
         dlg.add_response("create", "Create")
-        dlg.set_response_appearance("create", Adw.ResponseAppearance.SUGGESTED)
+        dlg.set_response_appearance("create", ui.ResponseAppearance.SUGGESTED)
         dlg.set_default_response("create")
         dlg.set_close_response("cancel")
 
@@ -320,7 +316,6 @@ def build() -> Gtk.Widget:
                 return
             arch = "win32" if arch_combo.get_selected() == 1 else "win64"
             ppath = winecore.new_prefix_path(name)
-            console.clear()
             runner.run(winecore.create_prefix_argv(ppath, arch))
 
         dlg.connect("response", _on_response)

src/taninux/gui/style.py

@@ -56,10 +56,11 @@ def _build_css(acc: Accent) -> bytes:
     # Akzent-Override + Swatch-Styling (Swatches sind statisch, aber billig
     # mitzubauen). Swatch = runder Farbknopf, aktiver bekommt einen Ring.
     swatches = "\n".join(
+        # Kein !important — GTK4 verwirft Deklarationen damit (siehe style_apple.css).
         f"button.fuji-swatch.swatch-{a.key} {{"
-        f" background-color: {a.hex} !important;"
-        f" background: {a.hex} !important;"
-        f" border: none !important; }}"
+        f" background-color: {a.hex};"
+        f" background: {a.hex};"
+        f" border: none; }}"
         for a in FUJI_ACCENTS
     )
     return f"""
@@ -67,6 +68,15 @@ def _build_css(acc: Accent) -> bytes:
 @define-color accent_fg_color {fg};
 @define-color accent_color {acc.hex};
 
+/* libadwaita/GTK4 nutzen für Fokus-Ringe die CSS-Variable --accent-color
+ * (Default-Blau), nicht die alte @accent_color-Named-Color. Variable auf den
+ * Fuji-Akzent setzen, damit ALLE Fokus-Outlines (Entry, Scale, Button …) folgen. */
+:root {{
+  --accent-color: {acc.hex};
+  --accent-bg-color: {acc.hex};
+  --accent-fg-color: {fg};
+}}
+
 /* pill controls — all buttons & dropdowns are stadium pills */
 button, menubutton > button, dropdown, dropdown > button,
 combobox button, splitbutton > button, entry, spinbutton,
@@ -135,12 +145,15 @@ def apply_persisted() -> None:
 # existing `@import "libadwaita.css"`; GTK3 rides on adw-gtk3.
 
 # Monochrome surfaces derived from the two base values (#0f0f0f / #f0f0f0).
-_DARK_SURF = dict(bg="#0f0f0f", bg_alt="#191919", bg_hi="#262626", view="#141414",
-                  card="#191919", headerbar="#0f0f0f", fg="#f0f0f0",
-                  border="rgba(240,240,240,0.10)")
-_LIGHT_SURF = dict(bg="#f0f0f0", bg_alt="#e4e4e4", bg_hi="#d6d6d6", view="#fafafa",
-                   card="#ffffff", headerbar="#e8e8e8", fg="#0f0f0f",
-                   border="rgba(15,15,15,0.12)")
+# Töne 1:1 mit tanin-libadwaita/gtk-4.0/{dark,light}.css (= eww-Palette).
+# Shell-Fläche einheitlich: window/headerbar/sidebar alle #0f0f0f, nur Cards
+# heben sich mit bg_alt (#191919) ab.
+_DARK_SURF = dict(bg="#0f0f0f", bg_alt="#191919", bg_hi="#242424", view="#141414",
+                  card="#191919", headerbar="#0f0f0f", sidebar="#0f0f0f",
+                  fg="#f0f0f0", border="rgba(240,240,240,0.10)")
+_LIGHT_SURF = dict(bg="#f3f1ec", bg_alt="#e4e4e4", bg_hi="#d6d6d6", view="#faf8f4",
+                   card="#ffffff", headerbar="#f3f1ec", sidebar="#f3f1ec",
+                   fg="#0f0f0f", border="rgba(15,15,15,0.12)")
 
 _PILLS_GTK4 = (
     "button, menubutton > button, dropdown, dropdown > button, combobox button,\n"
@@ -195,7 +208,7 @@ def _gtk4_full(acc: Accent, dark: bool) -> str:
 @define-color dialog_fg_color {p['fg']};
 @define-color popover_bg_color {p['bg_alt']};
 @define-color popover_fg_color {p['fg']};
-@define-color sidebar_bg_color {p['bg_alt']};
+@define-color sidebar_bg_color {p['sidebar']};
 @define-color sidebar_fg_color {p['fg']};
 {_PILLS_GTK4}"""
 
@@ -302,7 +315,7 @@ placessidebar,
 placessidebar > viewport,
 .sidebar > viewport > contents,
 placessidebar > viewport > contents {{
-  background-color: {p['bg_alt']};
+  background-color: {p['sidebar']};
   color: {p['fg']};
 }}
 .sidebar,

src/taninux/gui/ui/__init__.py

@@ -7,7 +7,8 @@ EIN Schalter:
     TANINUX_UI=adw      → libadwaita (Adw.PreferencesPage/Group/ActionRow)
     TANINUX_UI=native   → eigene GTK4-Widgets mit Apple-Optik (ui/native.py)
 
-Default ist ``adw`` — heute ändert sich also nichts. Der Sinn der Naht: die
+Default ist ``native`` — ohne gesetzte Umgebungsvariable läuft die App auf den
+eigenen GTK4-Widgets. Der Sinn der Naht: die
 ~430 Adw-Zeilen-/Gruppen-Instanzen über 34 Dateien laufen ab jetzt durch EINE
 Stelle. Damit wird „eigene Design-Sprache statt libadwaita“ ein Umbau hier
 statt überall — und Seite für Seite migrierbar, weil beide Backends dieselbe

src/taninux/gui/ui/native.py

@@ -15,10 +15,15 @@ import gi
 
 gi.require_version("Gdk", "4.0")
 gi.require_version("Gtk", "4.0")
-from gi.repository import Gdk, GObject, Gtk  # noqa: E402
+from gi.repository import Gdk, GObject, Gtk, Pango  # noqa: E402
 
-# Apples Content-Spalte ist fix-ish; wir clampen statt voll zu dehnen.
-CLAMP_WIDTH = 640
+# Content-Spalte: responsiv. Wächst mit dem Fenster, aber nie schmaler als
+# CLAMP_MIN und nie breiter als CLAMP_MAX — dazwischen füllt sie die verfügbare
+# Breite und sitzt zentriert (siehe _Clamp).
+CLAMP_MIN = 640
+CLAMP_MAX = 960
+# Rückwärtskompatibler Alias (falls irgendwo referenziert).
+CLAMP_WIDTH = CLAMP_MAX
 
 _css_loaded = False
 
@@ -41,8 +46,12 @@ def ensure_css() -> None:
 
     provider = Gtk.CssProvider()
     provider.load_from_path(str(Path(__file__).with_name("style_apple.css")))
+    # Über PRIORITY_USER (800): GTK lädt ~/.config/gtk-4.0/gtk.css (adw-gtk3)
+    # automatisch auf USER-Priorität. Dessen sehr spezifische headerbar-/
+    # sidebar-Regeln würden unsere bei gleicher Priorität schlagen — darum
+    # eins drüber, damit unsere Apple-Optik zuverlässig gewinnt.
     Gtk.StyleContext.add_provider_for_display(
-        display, provider, Gtk.STYLE_PROVIDER_PRIORITY_USER
+        display, provider, Gtk.STYLE_PROVIDER_PRIORITY_USER + 1
     )
     _css_loaded = True
 
@@ -64,7 +73,8 @@ class Row(Gtk.ListBoxRow):
     def __init__(self, title: str = "", subtitle: str = "") -> None:
         super().__init__()
         self.set_activatable(True)
-        self.connect("activate", lambda _: self.emit("activated"))
+        self._activatable_widget: Gtk.Widget | None = None
+        self.connect("activate", self._on_activate)
 
         box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, spacing=12)
         box.add_css_class("tn-row")
@@ -91,6 +101,17 @@ class Row(Gtk.ListBoxRow):
         self._suffix.set_valign(Gtk.Align.CENTER)
         box.append(self._suffix)
 
+    def _on_activate(self, _row: "Row") -> None:
+        # Adw.ActionRow forwards activation to its activatable widget (button →
+        # clicked, everything else → activate); otherwise emit our own signal.
+        widget = self._activatable_widget
+        if widget is not None:
+            if isinstance(widget, Gtk.Button):
+                widget.emit("clicked")
+            else:
+                widget.activate()
+        self.emit("activated")
+
     # -- Adw.ActionRow-kompatible API ------------------------------------
     def set_title(self, title: str) -> None:
         self._title.set_label(title)
@@ -99,6 +120,15 @@ class Row(Gtk.ListBoxRow):
         self._subtitle.set_label(subtitle or "")
         self._subtitle.set_visible(bool(subtitle))
 
+    def set_subtitle_lines(self, n: int) -> None:
+        """Adw.ActionRow.set_subtitle_lines: wrap subtitle to n lines, ellipsise."""
+        self._subtitle.set_lines(n)
+        self._subtitle.set_ellipsize(Pango.EllipsizeMode.END)
+
+    def set_activatable_widget(self, widget: Gtk.Widget | None) -> None:
+        """Adw.ActionRow.set_activatable_widget: activating the row triggers it."""
+        self._activatable_widget = widget
+
     def add_prefix(self, widget: Gtk.Widget) -> None:
         self._prefix.append(widget)
 
@@ -286,6 +316,51 @@ class Group(Gtk.Box):
         self._header.set_visible(True)
 
 
+class _Clamp(Gtk.Widget):
+    """Adw.Clamp-Ersatz: ein Kind, responsiv zwischen CLAMP_MIN und CLAMP_MAX.
+
+    Das Kind füllt die verfügbare Content-Breite, bleibt dabei aber nie schmaler
+    als CLAMP_MIN und nie breiter als CLAMP_MAX, und sitzt zentriert. So wächst
+    der Inhalt mit dem Fenster, behält aber lesbare Grenzen.
+
+    Basiert auf Gtk.Widget statt Gtk.Box, weil Boxen über ihren LayoutManager
+    messen und das do_measure-Override umgehen würden.
+    """
+
+    def __init__(self, child: Gtk.Widget) -> None:
+        super().__init__(hexpand=True)
+        self._child = child
+        child.set_parent(self)
+
+    @staticmethod
+    def _target(width: int) -> int:
+        """Spaltenbreite für eine gegebene verfügbare Breite (geklemmt)."""
+        return max(CLAMP_MIN, min(width, CLAMP_MAX))
+
+    def do_measure(self, orientation, for_size):  # noqa: ANN001
+        if orientation == Gtk.Orientation.HORIZONTAL:
+            # Mindestens CLAMP_MIN anfordern (Fenster darf nicht enger werden),
+            # natürlich CLAMP_MAX — hexpand füllt dazwischen alles auf.
+            return CLAMP_MIN, CLAMP_MAX, -1, -1
+        width = self._target(for_size) if for_size >= 0 else for_size
+        return self._child.measure(orientation, width)
+
+    def do_size_allocate(self, width, height, baseline):  # noqa: ANN001
+        w = self._target(width)
+        alloc = Gdk.Rectangle()
+        alloc.x = max(0, (width - w) // 2)
+        alloc.y = 0
+        alloc.width = w
+        alloc.height = height
+        self._child.size_allocate(alloc, baseline)
+
+    def do_dispose(self) -> None:
+        child, self._child = self._child, None
+        if child is not None:
+            child.unparent()
+        Gtk.Widget.do_dispose(self)
+
+
 class Page(Gtk.ScrolledWindow):
     """Adw.PreferencesPage-Ersatz: scrollende, zentrierte Gruppen-Spalte."""
 
@@ -295,13 +370,11 @@ class Page(Gtk.ScrolledWindow):
         self.add_css_class("tn-page")
 
         self._box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=28)
-        self._box.set_halign(Gtk.Align.CENTER)
-        self._box.set_size_request(CLAMP_WIDTH, -1)
         self._box.set_margin_top(28)
         self._box.set_margin_bottom(28)
         self._box.set_margin_start(18)
         self._box.set_margin_end(18)
-        self.set_child(self._box)
+        self.set_child(_Clamp(self._box))
 
     # -- Adw.PreferencesPage-kompatible API ------------------------------
     def add(self, group: Gtk.Widget) -> None:
@@ -528,6 +601,10 @@ class AlertDialog(GObject.Object):
 
         dlg = Gtk.Window(modal=True, resizable=False, decorated=False)
         dlg.add_css_class("tn-alert-dialog")
+        # Dunkel-Modus des Eltern-Fensters übernehmen, sonst rendert der Dialog hell.
+        if win is not None and win.has_css_class("tn-dark"):
+            dlg.add_css_class("tn")
+            dlg.add_css_class("tn-dark")
         if win:
             dlg.set_transient_for(win)
         dlg.set_default_size(380, -1)

src/taninux/gui/ui/shell.py

@@ -39,20 +39,16 @@ class MainWindow(Gtk.ApplicationWindow):
         self._stack = Gtk.Stack(hexpand=True, vexpand=True)
         self._stack.set_transition_type(Gtk.StackTransitionType.CROSSFADE)
 
-        # Content-Titel lebt in der Fenster-HeaderBar (statt Adw.WindowTitle).
-        self._title = Gtk.Label(label=title)
-        self._title.add_css_class("tn-content-title")
-        header = Gtk.HeaderBar()
-        header.set_title_widget(self._title)
-        self.set_titlebar(header)
-
+        # Kein Topbar/HeaderBar (wie die Music-App): der Seitentitel lebt gross
+        # oben im Content, der App-Name als Brand oben in der Sidebar.
         split = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
         split.add_css_class("tn-shell")
         split.append(self._build_sidebar())
         sep = Gtk.Separator(orientation=Gtk.Orientation.VERTICAL)
         split.append(sep)
-        split.append(self._stack)
+        split.append(self._build_content())
         self.set_child(split)
+        self._install_search_shortcut()
 
         if self._pages:
             self._listbox.select_row(self._rows[self._pages[0].key])
@@ -82,21 +78,61 @@ class MainWindow(Gtk.ApplicationWindow):
         scroller.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
         scroller.set_child(self._listbox)
 
-        search = Gtk.SearchEntry()
-        search.set_placeholder_text("Search settings")
-        search.add_css_class("tn-search")
-        search.set_margin_top(8)
-        search.set_margin_bottom(4)
-        search.set_margin_start(8)
-        search.set_margin_end(8)
-        search.connect("search-changed", self._on_search)
+        # Suche ist kein Dauer-Feld: eingeklappte SearchBar, erscheint per Ctrl+F
+        # (Esc schliesst). Bewusst ohne Pill-Look (keine tn-search-Klasse).
+        self._search = Gtk.SearchEntry()
+        self._search.set_placeholder_text("Search settings")
+        self._search.connect("search-changed", self._on_search)
+        self._search.connect("stop-search", lambda *_: self._close_search())
+
+        self._searchbar = Gtk.SearchBar()
+        self._searchbar.set_child(self._search)
+        self._searchbar.connect_entry(self._search)
+
+        brand = Gtk.Label(label=self._app_title, xalign=0.0)
+        brand.add_css_class("tn-brand")
+        brand.set_wrap(True)
 
         box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
         box.add_css_class("tn-sidebar")
-        box.append(search)
+        box.append(brand)
+        box.append(self._searchbar)
         box.append(scroller)
         return box
 
+    # -- Suche per Ctrl+F ein-/ausblenden ------------------------------
+    def _install_search_shortcut(self) -> None:
+        controller = Gtk.ShortcutController()
+        controller.set_scope(Gtk.ShortcutScope.GLOBAL)
+        controller.add_shortcut(Gtk.Shortcut.new(
+            Gtk.ShortcutTrigger.parse_string("<Control>f"),
+            Gtk.CallbackAction.new(lambda *_: self._open_search()),
+        ))
+        self.add_controller(controller)
+
+    def _open_search(self) -> bool:
+        self._searchbar.set_search_mode(True)
+        self._search.grab_focus()
+        return True
+
+    def _close_search(self) -> None:
+        self._search.set_text("")
+        self._searchbar.set_search_mode(False)
+
+    # -- Content -------------------------------------------------------
+    def _build_content(self) -> Gtk.Widget:
+        # Grosser Seitentitel oben, darunter der gestapelte Seiteninhalt. Titel
+        # ist gepinnt, der Inhalt scrollt. Titel läuft durch denselben _Clamp wie
+        # die Seiten → bleibt mittig zentriert und linksbündig zu den Karten.
+        self._title = Gtk.Label(label=self._app_title, xalign=0.0, hexpand=True)
+        self._title.add_css_class("tn-content-title")
+
+        box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
+        box.add_css_class("tn-content-pane")
+        box.append(native._Clamp(self._title))
+        box.append(self._stack)
+        return box
+
     def _header_row(self, title: str) -> Gtk.ListBoxRow:
         row = Gtk.ListBoxRow()
         row.set_selectable(False)

src/taninux/gui/ui/style_apple.css

@@ -10,7 +10,7 @@
 
 /* --------------------------------------------------------- Window / Fläche */
 .tn-page {
-  background-color: #f6f6f6;
+  background-color: #f5f5f7;
 }
 .tn-page,
 .tn-title,
@@ -103,6 +103,39 @@
 .tn-row button.destructive-action:hover {
   background-color: rgba(255, 59, 48, 0.10);
 }
+/* Keycap — a shortcut shown like a physical key; click to rebind. */
+.tn-row button.tn-keycap {
+  font-family: monospace;
+  font-weight: 600;
+  color: #1d1d1f;
+  background-color: rgba(120, 120, 128, 0.12);
+  border: 1px solid rgba(60, 60, 67, 0.18);
+  border-radius: 7px;
+  padding: 2px 10px;
+  min-height: 0;
+}
+.tn-row button.tn-keycap:hover {
+  color: @accent_color;
+  background-color: alpha(@accent_color, 0.14);
+  border-color: @accent_color;
+}
+window.tn-dark .tn-row button.tn-keycap {
+  color: #f0f0f0;
+  background-color: rgba(255, 255, 255, 0.08);
+  border-color: rgba(255, 255, 255, 0.16);
+}
+window.tn-dark .tn-row button.tn-keycap:hover {
+  color: @accent_color;
+  background-color: alpha(@accent_color, 0.20);
+  border-color: @accent_color;
+}
+/* Capture dialog: show the grabbed combo large + monospace. */
+.tn-capture-combo {
+  font-family: monospace;
+  font-size: 20px;
+  font-weight: 700;
+  margin: 6px 0;
+}
 
 /* Entry/Spin rahmenlos & rechtsbündig, Wert in Sekundärfarbe (wie iOS). */
 .tn-row entry,
@@ -162,16 +195,18 @@
   background-color: transparent;
   min-width: 0;
 }
+/* Light: einheitliche Shell im warmen Papier-Ton #f3f1ec (Fuji light $bg),
+ * statt kaltem Grau — Topbar + Sidebar + Page identisch, nur Cards (#fff) heben ab. */
 .tn-sidebar {
-  background-color: #ebebeb !important;
+  background-color: #f3f1ec;
   border-right: 1px solid rgba(0, 0, 0, 0.07);
   min-width: 232px;
 }
 headerbar {
-  background-color: #ebebeb !important;
-  background: #ebebeb !important;
-  border-bottom: 1px solid rgba(0, 0, 0, 0.07) !important;
-  box-shadow: none !important;
+  background-color: #f3f1ec;
+  background: #f3f1ec;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
+  box-shadow: none;
 }
 .tn-search {
   border-radius: 999px;
@@ -216,8 +251,27 @@ headerbar {
   color: rgba(60, 60, 67, 0.5);
   margin: 12px 12px 2px;
 }
+/* Brand oben in der Sidebar (App-Name gross, wie „Music"). */
+.tn-brand {
+  font-size: 1.55em;
+  font-weight: 800;
+  margin: 18px 16px 10px;
+}
+/* Gepinnter Seitentitel oben im Content (der gewählte Eintrag). Gleich gross
+ * wie der Brand-Titel links; linke Kante deckt sich mit den Gruppen-Titeln in
+ * den Karten (18px Page + 10px Card). */
 .tn-content-title {
-  font-weight: 600;
+  font-size: 1.55em;
+  font-weight: 800;
+  margin: 22px 0 6px 28px;
+}
+/* Content-Fläche der Settings-Shell: gleicher Ton wie die Music-App (.tn-content),
+ * damit Titelbereich und Seite nahtlos ineinander übergehen. */
+.tn-content-pane {
+  background-color: #f5f5f7;
+}
+window.tn-dark .tn-content-pane {
+  background-color: #161616;
 }
 
 /* Explizite Hell-Farben: GTK4 Adwaita kann beim Systemstart noch dunkel sein. */
@@ -245,42 +299,89 @@ window.tn:not(.tn-dark) .tn-group-desc {
 
 /* ------------------------------------------- Suggested-action + Progress */
 /* GTK4 Adwaita nutzt @blue_3 für suggested-action; wir überschreiben mit dem
- * Fuji-Akzent. !important schlägt Adwaita-Interna bei gleicher Priorität. */
+ * Fuji-Akzent. schlägt Adwaita-Interna bei gleicher Priorität. */
 button.suggested-action,
 button.suggested-action:not(:disabled) {
-  background-color: @accent_color !important;
-  background: @accent_color !important;
-  color: @accent_fg_color !important;
-  box-shadow: none !important;
+  background-color: @accent_color;
+  background: @accent_color;
+  color: @accent_fg_color;
+  box-shadow: none;
 }
 button.suggested-action:hover {
-  background-color: shade(@accent_color, 0.92) !important;
-  background: shade(@accent_color, 0.92) !important;
+  background-color: shade(@accent_color, 0.92);
+  background: shade(@accent_color, 0.92);
 }
 button.suggested-action:active {
-  background-color: shade(@accent_color, 0.85) !important;
-  background: shade(@accent_color, 0.85) !important;
+  background-color: shade(@accent_color, 0.85);
+  background: shade(@accent_color, 0.85);
 }
 
 /* Progress-Bars (Storage, Memory, CPU…) — Fuji-Akzent statt Adwaita-Blau */
 progress, trough > progress, progressbar > trough > progress {
-  background-color: @accent_color !important;
-  background: @accent_color !important;
+  background-color: @accent_color;
+  background: @accent_color;
+}
+
+/* LevelBar (CPU/Memory/Storage/Akku im Dashboard) — Fuji statt Adwaita-Blau.
+ * GTK4 nutzt levelbar > trough > block.{filled,full,high,low,empty}. */
+levelbar trough block.filled,
+levelbar trough block.full,
+levelbar trough block.high,
+levelbar trough block.low {
+  background-color: @accent_color;
+  border-color: @accent_color;
+}
+levelbar trough block.empty {
+  background-color: alpha(@accent_color, 0.12);
+  border-color: transparent;
+}
+
+/* Scale (Volume / Brightness) — dünner runder Track + runder Schiebe-Knopf
+ * (iOS-Stil), statt Adwaitas technischem Regler. */
+scale > trough {
+  background-color: alpha(@accent_color, 0.18);
+  min-height: 4px;
+  border-radius: 999px;
+}
+scale > trough > highlight {
+  background-color: @accent_color;
+  border-radius: 999px;
+}
+scale > trough > slider {
+  background-color: #ffffff;
+  border: none;
+  border-radius: 50%;
+  min-width: 18px;
+  min-height: 18px;
+  margin: -8px;   /* überragt den dünnen Track als runder Knopf */
+  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35), 0 0 0 0.5px rgba(0, 0, 0, 0.10);
+  transition: box-shadow 120ms ease;
+}
+scale > trough > slider:hover {
+  box-shadow: 0 2px 7px rgba(0, 0, 0, 0.40), 0 0 0 0.5px rgba(0, 0, 0, 0.10);
+}
+/* Tick-Marke (add_mark 100%) entschärfen — kein technischer Strich. */
+scale > marks,
+scale > marks > mark > indicator {
+  background-color: transparent;
+  min-height: 0;
+  min-width: 0;
 }
 
 /* =================================================================== DUNKEL */
 window.tn-dark .tn-page {
-  background-color: #0f0f0f;
+  background-color: #161616;
 }
-/* Sidebar + Topbar so dunkel wie die eww-Panels ($bg #0f0f0f), satt & opak. */
+/* Einheitliche Shell-Fläche: Topbar + Sidebar + Page alle #0f0f0f (eww $bg).
+ * Nur die Cards heben sich mit #191919 ab. */
 window.tn-dark headerbar {
-  background-color: #0f0f0f !important;
-  background: #0f0f0f !important;
-  border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
-  box-shadow: none !important;
+  background-color: #0f0f0f;
+  background: #0f0f0f;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
+  box-shadow: none;
 }
 window.tn-dark .tn-sidebar {
-  background-color: #0f0f0f !important;
+  background-color: #0f0f0f;
   border-right-color: rgba(255, 255, 255, 0.06);
 }
 window.tn-dark .tn-search {
@@ -309,7 +410,7 @@ window.tn-dark .tn-nav-header {
   color: rgba(235, 235, 245, 0.45);
 }
 window.tn-dark .tn-card {
-  background-color: rgba(44, 44, 46, 0.88);
+  background-color: #191919;   /* Fuji card_bg (eww $bg-alt) */
   border-color: rgba(255, 255, 255, 0.07);
   box-shadow:
     0 2px 6px rgba(0, 0, 0, 0.40),
@@ -317,7 +418,7 @@ window.tn-dark .tn-card {
     inset 0 1px 0 rgba(255, 255, 255, 0.09);   /* Glasrand */
 }
 window.tn-dark .card {
-  background-color: rgba(44, 44, 46, 0.88);
+  background-color: #191919;   /* Fuji card_bg (eww $bg-alt) */
   border-color: rgba(255, 255, 255, 0.07);
   box-shadow:
     0 2px 6px rgba(0, 0, 0, 0.40),
@@ -431,7 +532,7 @@ window.tn-dark .tn-expander-chevron {
   margin-top: 16px;
 }
 window.tn-dark .tn-alert-box {
-  background-color: #2c2c2e;
+  background-color: #191919;   /* Fuji popover/dialog */
   box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
 }
 window.tn-dark .tn-alert-heading {
@@ -440,3 +541,577 @@ window.tn-dark .tn-alert-heading {
 window.tn-dark .tn-alert-body {
   color: rgba(235, 235, 245, 0.65);
 }
+
+/* ============================================== FOKUS-RING (Akzent statt Blau) */
+/* GTK4s eingebautes Theme zeichnet den Tastatur-Fokus-Ring blau (outline-color).
+ * Über unseren USER+1-Provider auf den Fuji-Akzent umfärben — gilt für Rows,
+ * Buttons, LevelBars, Scales, alles Fokussierbare. */
+*:focus-visible {
+  outline-color: @accent_color;
+}
+levelbar:focus-visible,
+scale:focus-visible,
+row:focus-visible,
+.tn-nav > row:focus-visible {
+  outline-color: @accent_color;
+}
+/* Entry/PasswordEntry/SpinButton zeichnen ihren Fokus per box-shadow (nicht
+ * outline) in GTKs eigenem Blau — elementspezifisch auf den Fuji-Akzent
+ * umfärben (höhere Spezifität als *:focus-visible, schlägt das Default-Theme). */
+entry:focus-within,
+passwordentry:focus-within,
+spinbutton:focus-within {
+  outline-color: @accent_color;
+  box-shadow: inset 0 0 0 2px @accent_color;
+}
+/* Borderlose Werte-Entries in den Karten-Zeilen bleiben ohne Ring. */
+.tn-row entry:focus-within,
+.tn-row spinbutton:focus-within {
+  box-shadow: none;
+}
+/* Slider-Fokusring komplett entfernen (User: "der Slider braucht das nicht").
+ * GTK zeichnet ihn je nach Element als outline ODER box-shadow auf scale/trough/
+ * slider — daher alle Varianten abräumen. Der normale 3D-Knopfschatten bleibt
+ * (kommt aus „scale > trough > slider" oben, hier nicht angefasst). */
+scale:focus-visible,
+scale:focus:focus-visible,
+scale:focus-within,
+scale:focus-visible > trough,
+scale:focus:focus-visible > trough,
+scale:focus-within > trough {
+  outline: none;
+  box-shadow: none;
+}
+scale:focus-visible > trough > slider,
+scale:focus:focus-visible > trough > slider,
+scale:focus-within > trough > slider {
+  outline: none;
+}
+
+/* ============================================================ TANINUX Music
+ * Native Apple-Music-artige Shell (src/taninux/music). Nutzt .tn-sidebar mit;
+ * hier nur die Music-spezifischen Flächen: Transport-Bar, Content, Track-Liste.
+ */
+/* Music-Sidebar nutzt .tn-nav (glassy Accent-Wash + Border wie die Settings).
+ * Hier nur eine dezente Frost-Note: leichter Vertikal-Verlauf + Innen-Highlight,
+ * damit das Panel etwas „gläserner“ wirkt als eine flache Fläche. */
+window.tn-dark .tn-sidebar {
+  background-image: linear-gradient(
+    to bottom,
+    rgba(255, 255, 255, 0.045),
+    rgba(255, 255, 255, 0.0) 160px
+  );
+  box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.05);
+}
+
+.tn-content {
+  background-color: #f5f5f7;
+}
+window.tn-dark .tn-content {
+  background-color: #161616;
+}
+
+/* Track-Liste */
+.tn-track-list {
+  background: transparent;
+}
+.tn-track-list > row {
+  border-radius: 8px;
+  margin: 0 14px;
+}
+.tn-track-list > row:hover {
+  background-color: rgba(120, 120, 128, 0.12);
+}
+.tn-track-list > row:selected {
+  background-color: rgba(120, 120, 128, 0.18);
+}
+
+/* Transport-Bar (Now-Playing, unten) — randlos, Padding statt Margin, damit das
+ * Dunkel bündig bis zum Fensterrand läuft (kein „grauer Rahmen“). */
+.tn-transport {
+  padding: 8px 14px;
+  border-top: 1px solid rgba(0, 0, 0, 0.08);
+  background-color: #f3f1ec;
+}
+/* Dunkel: solide, identisch zur Sidebar (#0f0f0f). */
+window.tn-dark .tn-transport {
+  border-top-color: rgba(255, 255, 255, 0.06);
+  background-color: #0f0f0f;
+}
+.tn-transport-cover {
+  border-radius: 6px;
+  min-width: 46px;
+  min-height: 46px;
+}
+/* Ordner-Karte: Icon zentriert auf dezenter Fläche, Akzentfarbe. */
+.tn-folder-cover {
+  color: @accent_color;
+  background-color: rgba(120, 120, 128, 0.15);
+}
+.tn-transport-title {
+  font-weight: 600;
+  font-size: 0.95rem;
+}
+.tn-transport-artist {
+  font-size: 0.82rem;
+  opacity: 0.6;
+}
+.tn-transport-time {
+  font-size: 0.78rem;
+  opacity: 0.55;
+  font-feature-settings: "tnum";
+}
+.tn-transport-play {
+  padding: 6px;
+}
+.tn-transport scale slider {
+  min-width: 12px;
+  min-height: 12px;
+}
+.tn-transport button.tn-active image {
+  color: @accent_color;
+}
+
+/* Typografie-Fallbacks (falls das System-Theme sie nicht liefert) */
+.title-1 { font-size: 1.9em; font-weight: 800; }
+.title-3 { font-size: 1.15em; font-weight: 700; }
+.dim-label { opacity: 0.55; }
+.error { color: #ff3b30; }
+
+/* Karten (Carousel/Grid) */
+.tn-card-btn {
+  padding: 6px;
+  border-radius: 12px;
+  background: transparent;
+}
+.tn-card-btn:hover {
+  background-color: rgba(120, 120, 128, 0.12);
+}
+.tn-cover {
+  background-color: rgba(120, 120, 128, 0.18);
+}
+.tn-cover-rounded { border-radius: 10px; }
+.tn-cover-round { border-radius: 999px; }
+.tn-card-title { font-weight: 600; font-size: 0.92rem; }
+.tn-card-sub { font-size: 0.82rem; opacity: 0.55; }
+
+/* Carousel */
+.tn-carousel-scroller { background: transparent; }
+.tn-carousel-scroller > * { background: transparent; }
+
+/* NavigationStack-Kopf */
+/* Fixer Seitentitel im Music-Header — gleiche Größe wie der Sidebar-Brand „Music“. */
+.tn-nav-title { font-weight: 800; font-size: 1.55em; }
+
+/* Toast */
+.tn-toast {
+  background-color: rgba(40, 40, 42, 0.92);
+  color: #ffffff;
+  border-radius: 999px;
+  padding: 10px 20px;
+  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
+}
+
+/* Klickbarer Titel/Interpret in der Transport-Bar (zu Album/Interpret). */
+.tn-transport .tn-link:hover {
+  color: @accent_color;
+  text-decoration: underline;
+}
+
+/* ============================================================ TANINUX Files
+ * Nativer Dateimanager (src/taninux/files). Teilt Sidebar (.tn-nav/.tn-sidebar)
+ * und Content (.tn-content) mit Music; hier nur die Datei-spezifischen Flächen:
+ * Toolbar, Breadcrumb und die Icon-Kacheln im Raster.
+ */
+/* Toolbar oben im Content (Zurück/Vor/Hoch · Breadcrumb · Aktionen). */
+.tn-files-toolbar {
+  border-bottom: 1px solid rgba(60, 60, 67, 0.10);
+  padding-bottom: 8px;
+}
+window.tn-dark .tn-files-toolbar {
+  border-bottom-color: rgba(255, 255, 255, 0.06);
+}
+.tn-files-toolbar button.circular {
+  min-width: 30px;
+  min-height: 30px;
+  padding: 0;
+}
+
+/* Breadcrumb: flache Pfad-Segmente, aktuelles Segment betont. */
+.tn-crumb {
+  padding: 3px 8px;
+  min-height: 0;
+  font-weight: 500;
+  color: rgba(60, 60, 67, 0.7);
+}
+.tn-crumb:hover {
+  background-color: rgba(120, 120, 128, 0.12);
+}
+.tn-crumb-current {
+  color: #1d1d1f;
+  font-weight: 600;
+}
+.tn-crumb-sep {
+  color: rgba(60, 60, 67, 0.35);
+  font-size: 0.95em;
+}
+window.tn-dark .tn-crumb {
+  color: rgba(235, 235, 245, 0.6);
+}
+window.tn-dark .tn-crumb-current {
+  color: #f5f5f7;
+}
+window.tn-dark .tn-crumb-sep {
+  color: rgba(235, 235, 245, 0.35);
+}
+
+/* Datei-Kachel: Icon + Name, Hover-/Auswahl-Wash wie die Music-Karten. */
+.tn-file-grid {
+  background: transparent;
+}
+.tn-file-tile {
+  padding: 10px 6px;
+  border-radius: 12px;
+}
+/* GridView-Item-Knoten heisst `child` (nicht `flowboxchild`). Die Default-Blau-
+ * Auswahl am child neutralisieren und stattdessen die Kachel im Akzent rahmen —
+ * dieselbe gerundete Akzent-Auswahl wie in der Listenansicht. */
+.tn-file-grid > child {
+  border-radius: 12px;
+  padding: 0;
+  background: none;
+}
+.tn-file-grid > child:hover .tn-file-tile {
+  background-color: rgba(120, 120, 128, 0.12);
+}
+.tn-file-grid > child:selected {
+  background: none;
+}
+.tn-file-grid > child:selected .tn-file-tile {
+  background-color: alpha(@accent_color, 0.16);
+}
+window.tn-dark .tn-file-grid > child:hover .tn-file-tile {
+  background-color: rgba(255, 255, 255, 0.06);
+}
+window.tn-dark .tn-file-grid > child:selected .tn-file-tile {
+  background-color: alpha(@accent_color, 0.24);
+}
+.tn-file-name {
+  font-size: 0.85rem;
+  color: #1d1d1f;
+}
+.tn-file-grid > child:selected .tn-file-name {
+  color: @accent_color;
+  font-weight: 600;
+}
+window.tn-dark .tn-file-name {
+  color: #f5f5f7;
+}
+
+/* Kontextmenü (Rechtsklick) — kompaktes, flaches Popover.
+ * Über die Popover-Klasse gescopt, damit es die adw-gtk3-Popover-Regeln sicher
+ * schlägt (sonst werden die Buttons gross & klobig). */
+popover.tn-menu-popover > contents {
+  padding: 5px;
+  border-radius: 12px;
+  background-color: #ffffff;
+  border: 1px solid rgba(0, 0, 0, 0.08);
+  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
+}
+window.tn-dark popover.tn-menu-popover > contents {
+  background-color: #1f1f1f;
+  border-color: rgba(255, 255, 255, 0.08);
+  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.50);
+}
+.tn-menu {
+  min-width: 178px;
+}
+popover.tn-menu-popover button.tn-menu-item {
+  min-height: 0;
+  padding: 6px 12px;
+  margin: 1px 0;
+  border-radius: 7px;
+  font-weight: 400;
+  font-size: 0.95rem;
+  background: transparent;
+  background-image: none;
+  box-shadow: none;
+  border: none;
+  color: #1d1d1f;
+}
+popover.tn-menu-popover button.tn-menu-item:hover {
+  background-color: alpha(@accent_color, 0.14);
+  color: @accent_color;
+}
+popover.tn-menu-popover button.tn-menu-item.destructive-action {
+  color: #ff3b30;
+  font-weight: 400;
+}
+popover.tn-menu-popover button.tn-menu-item.destructive-action:hover {
+  background-color: rgba(255, 59, 48, 0.12);
+  color: #ff3b30;
+}
+window.tn-dark popover.tn-menu-popover button.tn-menu-item {
+  color: #f5f5f7;
+}
+window.tn-dark popover.tn-menu-popover button.tn-menu-item.destructive-action {
+  color: #ff453a;
+}
+.tn-menu separator {
+  margin: 4px 6px;
+  min-height: 1px;
+  background-color: rgba(60, 60, 67, 0.14);
+}
+window.tn-dark .tn-menu separator {
+  background-color: rgba(255, 255, 255, 0.10);
+}
+
+/* Listenansicht (ColumnView): ruhige Zeilen, Auswahl im Akzent.
+ * Die innere `listview`-Fläche (und Zeilen/Zellen) zeichnet sonst ihren eigenen
+ * hellen `view`-Hintergrund — transparent setzen, damit die dunkle Content-
+ * Fläche durchscheint. */
+.tn-file-list,
+.tn-file-list > listview,
+.tn-file-list > listview > row,
+.tn-file-list > listview > row > cell {
+  background: transparent;
+  background-color: transparent;
+}
+.tn-file-list {
+  padding: 4px 10px 16px;
+}
+.tn-file-list > header {
+  background: transparent;
+}
+.tn-file-list > header > button {
+  background-color: transparent;
+}
+.tn-file-list > header button {
+  background: transparent;
+  box-shadow: none;
+  border: none;
+  font-size: 0.82rem;
+  font-weight: 600;
+  color: rgba(60, 60, 67, 0.55);
+}
+.tn-file-list row:hover {
+  background-color: rgba(120, 120, 128, 0.10);
+  border-radius: 8px;
+}
+.tn-file-list row:selected {
+  background-color: alpha(@accent_color, 0.16);
+  border-radius: 8px;
+}
+.tn-file-list row:selected label {
+  color: @accent_color;
+  font-weight: 600;
+}
+.tn-file-meta {
+  font-size: 0.85rem;
+  color: rgba(60, 60, 67, 0.6);
+}
+window.tn-dark .tn-file-list > header button {
+  color: rgba(235, 235, 245, 0.5);
+}
+window.tn-dark .tn-file-list row:hover {
+  background-color: rgba(255, 255, 255, 0.05);
+}
+window.tn-dark .tn-file-list row:selected {
+  background-color: alpha(@accent_color, 0.24);
+}
+window.tn-dark .tn-file-meta {
+  color: rgba(235, 235, 245, 0.5);
+}
+
+/* Markierrahmen (Rubber-Band) im Akzent statt Adwaita-Blau. */
+.tn-file-grid > rubberband,
+.tn-file-list > rubberband,
+rubberband {
+  background-color: alpha(@accent_color, 0.18);
+  border: 1px solid alpha(@accent_color, 0.55);
+  border-radius: 3px;
+}
+
+/* „+“ im Favoriten-Kopf der Sidebar. */
+.tn-fav-add {
+  min-width: 22px;
+  min-height: 22px;
+  padding: 0;
+  margin-right: 8px;
+  color: rgba(60, 60, 67, 0.5);
+}
+.tn-fav-add:hover {
+  color: @accent_color;
+  background-color: alpha(@accent_color, 0.12);
+}
+window.tn-dark .tn-fav-add {
+  color: rgba(235, 235, 245, 0.45);
+}
+
+/* Statusleiste unten: Eintragszahl/Auswahl links, freier Speicher rechts. */
+.tn-statusbar {
+  padding: 4px 16px;
+  border-top: 1px solid rgba(60, 60, 67, 0.10);
+  min-height: 26px;
+}
+window.tn-dark .tn-statusbar {
+  border-top-color: rgba(255, 255, 255, 0.06);
+}
+.tn-status-text {
+  font-size: 0.82rem;
+  color: rgba(60, 60, 67, 0.6);
+}
+window.tn-dark .tn-status-text {
+  color: rgba(235, 235, 245, 0.5);
+}
+
+/* Tab-Leiste (erscheint ab 2 Tabs). Aktiver Tab verschmilzt mit der Inhaltsfläche. */
+.tn-tabbar {
+  padding: 6px 12px 0;
+}
+.tn-tab {
+  padding: 4px 4px 5px 12px;
+  border-radius: 9px 9px 0 0;
+  background-color: rgba(120, 120, 128, 0.10);
+  min-width: 90px;
+}
+.tn-tab label {
+  font-size: 0.86rem;
+  color: rgba(60, 60, 67, 0.7);
+}
+.tn-tab-active {
+  background-color: #f5f5f7;
+}
+.tn-tab-active label {
+  color: #1d1d1f;
+  font-weight: 500;
+}
+.tn-tab-close {
+  min-width: 18px;
+  min-height: 18px;
+  padding: 0;
+  opacity: 0.55;
+}
+.tn-tab-close:hover {
+  opacity: 1;
+  background-color: rgba(120, 120, 128, 0.20);
+}
+window.tn-dark .tn-tab {
+  background-color: rgba(255, 255, 255, 0.05);
+}
+window.tn-dark .tn-tab label {
+  color: rgba(235, 235, 245, 0.6);
+}
+window.tn-dark .tn-tab-active {
+  background-color: #161616;
+}
+window.tn-dark .tn-tab-active label {
+  color: #f5f5f7;
+}
+
+/* Eject-Knopf an Geräte-Zeilen in der Sidebar. */
+.tn-eject {
+  min-width: 24px;
+  min-height: 24px;
+  padding: 0;
+  margin-right: 6px;
+  opacity: 0.6;
+}
+.tn-eject:hover {
+  opacity: 1;
+  color: @accent_color;
+  background-color: alpha(@accent_color, 0.12);
+}
+
+/* Quick Look — Leertaste-Vorschau über dem Inhalt. */
+.tn-preview-backdrop {
+  background-color: rgba(0, 0, 0, 0.55);
+}
+.tn-preview-card {
+  background-color: #f2f2f7;
+  border-radius: 16px;
+  border: 1px solid rgba(0, 0, 0, 0.10);
+  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.50);
+  padding: 8px;
+  margin: 28px;
+}
+window.tn-dark .tn-preview-card {
+  background-color: #1c1c1c;
+  border-color: rgba(255, 255, 255, 0.08);
+}
+.tn-preview-header {
+  padding: 4px 6px 8px 12px;
+}
+.tn-preview-caption {
+  font-weight: 600;
+  font-size: 0.95rem;
+  color: #1d1d1f;
+}
+window.tn-dark .tn-preview-caption {
+  color: #f5f5f7;
+}
+.tn-preview {
+  background-color: #ffffff;
+  border-radius: 10px;
+}
+window.tn-dark .tn-preview {
+  background-color: #111111;
+}
+.tn-preview textview,
+.tn-preview textview text {
+  background: transparent;
+  font-family: monospace;
+  font-size: 0.88rem;
+  padding: 6px;
+}
+window.tn-dark .tn-preview textview text {
+  color: rgba(235, 235, 245, 0.85);
+}
+.tn-preview-name {
+  font-size: 1.1rem;
+  font-weight: 600;
+}
+.tn-preview-meta {
+  opacity: 0.6;
+  font-size: 0.9rem;
+}
+
+/* Batch-Rename-Dialog: Live-Vorschau „alt → neu". */
+.tn-rename-preview {
+  font-family: monospace;
+  font-size: 0.85rem;
+  padding: 8px 10px;
+  color: rgba(60, 60, 67, 0.75);
+}
+window.tn-dark .tn-rename-preview {
+  color: rgba(235, 235, 245, 0.7);
+}
+.tn-rename-scroll {
+  background-color: rgba(120, 120, 128, 0.10);
+  border-radius: 8px;
+}
+
+/* Music-Sidebar schmal wie die Calendar-App (208px). Zwei-Klassen-Selektor
+ * schlägt .tn-sidebar (min-width 232) sicher. */
+.tn-sidebar.tn-music-pane {
+  min-width: 208px;
+}
+/* Sidebar „Playlists“-Kopf: Titel links, „+“-Button rechtsbündig. */
+.tn-playlists-header {
+  margin-right: 8px;
+}
+/* „+“ dezent: kein Hintergrund, klein, gedimmt — nur Hover/Akzent. */
+.tn-add-btn,
+.tn-add-btn:hover,
+.tn-add-btn:checked,
+.tn-add-btn:active {
+  background: none;
+  background-color: transparent;
+  box-shadow: none;
+  border: none;
+  min-width: 20px;
+  min-height: 20px;
+  padding: 0;
+}
+.tn-add-btn { opacity: 0.55; }
+.tn-add-btn:hover { opacity: 1; color: @accent_color; }

tests/test_pages_native.py

@@ -0,0 +1,71 @@
+"""Smoke test for the native (libadwaita-free) UI backend.
+
+Under ``TANINUX_UI=native`` every registered page must ``build()`` without
+tripping over a gap in the native widget shims (``ui/native.py``). The point is
+to catch ``AttributeError`` / ``TypeError`` — a missing method or a wrong kwarg
+on a shim — the kind of runtime crash that only surfaces when a page is opened.
+
+The test is deliberately tolerant of *environmental* failures: several pages
+call system tools (pacman, nmcli, gsettings, …) inside ``build()``. When such a
+call blows up we skip that page rather than fail — those are not shim gaps.
+
+Needs a display. If GTK cannot initialise (headless CI), the whole module is
+skipped at import time.
+"""
+from __future__ import annotations
+
+import os
+
+# Must be set before taninux.gui.ui is imported so the native backend is chosen.
+os.environ.setdefault("TANINUX_UI", "native")
+
+import pytest
+
+# --- GTK availability gate (module-level skip when there is no display) --------
+try:
+    import gi
+
+    gi.require_version("Gtk", "4.0")
+    from gi.repository import Gtk
+
+    _res = Gtk.init_check()
+    _gtk_ok = _res[0] if isinstance(_res, tuple) else bool(_res)
+except Exception as exc:  # noqa: BLE001 — any import/version error means no GTK
+    pytest.skip(f"GTK 4 unavailable: {exc}", allow_module_level=True)
+else:
+    if not _gtk_ok:
+        pytest.skip("GTK could not initialise (no display)", allow_module_level=True)
+
+from taninux.gui import ui  # noqa: E402
+from taninux.gui.pages import PAGES  # noqa: E402
+
+
+@pytest.fixture(scope="module")
+def window():
+    """An off-screen GTK root so built pages have a real window to parent into.
+
+    Deliberately never presented and never destroyed: realising/tearing down a
+    window here (while pages have spawned worker threads that post idle
+    callbacks) can crash GTK at interpreter shutdown. Leaving it for the OS to
+    reclaim keeps the smoke test stable.
+    """
+    ui.ensure_css()
+    win = Gtk.Window()
+    ui.set_dark(win, False)
+    yield win
+
+
+@pytest.mark.parametrize("page", PAGES, ids=lambda p: p.key)
+def test_page_builds(page, window):
+    try:
+        widget = page.build()
+    except (AttributeError, TypeError):
+        # A shim gap (missing method / wrong kwarg) — exactly what we hunt for.
+        raise
+    except Exception as exc:  # noqa: BLE001 — a system tool the sandbox lacks
+        pytest.skip(f"{page.key}: build() needs a live system resource: {exc!r}")
+
+    assert widget is not None, f"{page.key}.build() returned None"
+    # Parent it (unrealised) so the native container measure paths are exercised.
+    holder = Gtk.Box()
+    holder.append(widget)