التنسيق والثيمات

Text(
  "عنوان",
  style: TextStyle(
    fontSize: 24,
    fontWeight: FontWeight.bold,
    color: Colors.purple,
  ),
)

MaterialApp(
  theme: ThemeData(
    primarySwatch: Colors.purple,
    fontFamily: "Cairo",
    brightness: Brightness.light,
  ),
  darkTheme: ThemeData(brightness: Brightness.dark),
  themeMode: ThemeMode.system,    // يتبع النظام
)

Text("نصّ", style: Theme.of(context).textTheme.titleLarge)
Container(color: Theme.of(context).primaryColor)

MaterialApp(
  locale: const Locale("ar"),
  supportedLocales: const [Locale("ar"), Locale("en")],
  // Flutter يطبّق RTL تلقائيًّا مع اللغة العربية
)

Directionality(textDirection: TextDirection.rtl, child: ...)