init

lib/theme/app_theme.dart

@@ -0,0 +1,52 @@
+import 'package:flutter/material.dart';
+import 'package:google_fonts/google_fonts.dart';
+
+import 'tokens.dart';
+
+/// Builds the app [ThemeData] from the Ratune tokens.
+///
+/// Monospace type is core to the identity — every surface uses JetBrains Mono
+/// (a close analog to the terminal fonts in Ratune's screenshots). The [accent]
+/// is passed in so the theme rebuilds when album-art extraction changes it.
+ThemeData buildRatuneTheme(Color accent) {
+  final mono = GoogleFonts.jetBrainsMonoTextTheme(
+    ThemeData.dark().textTheme,
+  ).apply(
+    bodyColor: RatuneColors.foreground,
+    displayColor: RatuneColors.foreground,
+  );
+
+  final scheme = ColorScheme.fromSeed(
+    seedColor: accent,
+    brightness: Brightness.dark,
+    surface: RatuneColors.surface,
+  ).copyWith(
+    primary: accent,
+    secondary: accent,
+    onSurface: RatuneColors.foreground,
+  );
+
+  return ThemeData(
+    useMaterial3: true,
+    brightness: Brightness.dark,
+    scaffoldBackgroundColor: RatuneColors.background,
+    canvasColor: RatuneColors.background,
+    colorScheme: scheme,
+    textTheme: mono,
+    primaryTextTheme: mono,
+    dividerColor: RatuneColors.border,
+    splashFactory: NoSplash.splashFactory,
+    highlightColor: Colors.transparent,
+    // Keep chrome flat and quiet — the content (and accent) carry the look.
+    appBarTheme: const AppBarTheme(
+      backgroundColor: RatuneColors.background,
+      surfaceTintColor: Colors.transparent,
+      elevation: 0,
+      centerTitle: false,
+    ),
+    listTileTheme: const ListTileThemeData(
+      dense: true,
+      minVerticalPadding: RatuneSpacing.sm,
+    ),
+  );
+}