195 lines
7.7 KiB
Dart
195 lines
7.7 KiB
Dart
import 'package:flutter/material.dart';
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/// Central design tokens for 와카뷰 (Ykavu) — soft-gradient + glassmorphism
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/// direction. `backgroundGradient` paints behind every screen (wired into
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/// `MaterialApp.builder`); cards/inputs/app bars are semi-transparent
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/// "glass" surfaces that let the gradient read through. `twinAccent` stays a
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/// separate warm accent so a twin-written bubble never reads as something
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/// the human actually typed (PRD §3.1 와카뷰 뱃지).
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class AppTheme {
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AppTheme._();
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static const _seed = Color(0xFF7C6FF0);
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static Color twinAccent(Brightness brightness) =>
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brightness == Brightness.dark ? Colors.amber.shade300 : Colors.amber.shade800;
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/// Soft diagonal gradient painted behind every screen. Light: pastel
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/// lavender → sky → pink. Dark: desaturated indigo → navy → plum.
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static LinearGradient backgroundGradient(Brightness brightness) {
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if (brightness == Brightness.dark) {
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return const LinearGradient(
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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colors: [Color(0xFF1B1730), Color(0xFF161C34), Color(0xFF2A1830)],
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);
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}
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return const LinearGradient(
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begin: Alignment.topLeft,
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end: Alignment.bottomRight,
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colors: [Color(0xFFEDE9FE), Color(0xFFE0F2FE), Color(0xFFFCE7F3)],
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);
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}
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/// "Glass" fill for cards/panels — semi-transparent so the gradient
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/// behind still reads through, with a faint light border for the classic
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/// glassmorphism edge highlight.
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static Color glassFill(Brightness brightness) => brightness == Brightness.dark
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? Colors.white.withOpacity(0.06)
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: Colors.white.withOpacity(0.55);
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static Color glassBorder(Brightness brightness) => brightness == Brightness.dark
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? Colors.white.withOpacity(0.10)
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: Colors.white.withOpacity(0.65);
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static ThemeData light() => _build(Brightness.light);
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static ThemeData dark() => _build(Brightness.dark);
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static ThemeData _build(Brightness brightness) {
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final scheme = ColorScheme.fromSeed(seedColor: _seed, brightness: brightness);
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final glass = glassFill(brightness);
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final glassEdge = glassBorder(brightness);
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final glassShape = RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(18),
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side: BorderSide(color: glassEdge, width: 1),
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);
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return ThemeData(
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useMaterial3: true,
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brightness: brightness,
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colorScheme: scheme,
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// Transparent so the gradient painted by MaterialApp.builder shows
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// through behind every Scaffold.
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scaffoldBackgroundColor: Colors.transparent,
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visualDensity: VisualDensity.comfortable,
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textTheme: _textTheme(),
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appBarTheme: AppBarTheme(
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backgroundColor: Colors.transparent,
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foregroundColor: scheme.onSurface,
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surfaceTintColor: Colors.transparent,
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elevation: 0,
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scrolledUnderElevation: 0,
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centerTitle: false,
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titleTextStyle: TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.w800,
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color: scheme.onSurface,
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letterSpacing: -0.2,
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),
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),
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cardTheme: CardThemeData(
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elevation: 0,
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color: glass,
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shape: glassShape,
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margin: EdgeInsets.zero,
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),
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listTileTheme: ListTileThemeData(
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iconColor: scheme.onSurfaceVariant,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
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contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
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),
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dividerTheme: DividerThemeData(color: scheme.outlineVariant, space: 32, thickness: 1),
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inputDecorationTheme: InputDecorationTheme(
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filled: true,
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fillColor: glass,
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contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(14),
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borderSide: BorderSide(color: glassEdge, width: 1),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(14),
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borderSide: BorderSide(color: glassEdge, width: 1),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(14),
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borderSide: BorderSide(color: scheme.primary, width: 1.6),
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),
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errorBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(14),
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borderSide: BorderSide(color: scheme.error, width: 1.2),
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),
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focusedErrorBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(14),
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borderSide: BorderSide(color: scheme.error, width: 1.6),
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),
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hintStyle: TextStyle(color: scheme.onSurfaceVariant.withOpacity(0.7)),
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),
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filledButtonTheme: FilledButtonThemeData(
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style: FilledButton.styleFrom(
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padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
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textStyle: const TextStyle(fontWeight: FontWeight.w700),
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),
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),
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outlinedButtonTheme: OutlinedButtonThemeData(
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style: OutlinedButton.styleFrom(
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padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
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),
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),
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textButtonTheme: TextButtonThemeData(
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style: TextButton.styleFrom(
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
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),
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),
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iconButtonTheme: IconButtonThemeData(
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style: IconButton.styleFrom(
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
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),
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),
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segmentedButtonTheme: SegmentedButtonThemeData(
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style: SegmentedButton.styleFrom(
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backgroundColor: glass,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
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),
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),
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chipTheme: ChipThemeData(
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(10),
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side: BorderSide(color: glassEdge, width: 1),
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),
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side: BorderSide.none,
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backgroundColor: glass,
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labelStyle: TextStyle(color: scheme.onSurfaceVariant, fontWeight: FontWeight.w600, fontSize: 12),
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
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),
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floatingActionButtonTheme: FloatingActionButtonThemeData(
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backgroundColor: scheme.primary,
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foregroundColor: scheme.onPrimary,
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elevation: 1,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(18)),
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),
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snackBarTheme: SnackBarThemeData(
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behavior: SnackBarBehavior.floating,
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
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),
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bannerTheme: MaterialBannerThemeData(
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backgroundColor: glass,
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padding: const EdgeInsets.all(16),
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),
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dialogTheme: DialogThemeData(
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backgroundColor: brightness == Brightness.dark
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? const Color(0xFF211D3D)
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: Colors.white.withOpacity(0.92),
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
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),
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progressIndicatorTheme: ProgressIndicatorThemeData(color: scheme.primary),
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);
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}
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static TextTheme _textTheme() {
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return const TextTheme(
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displaySmall: TextStyle(fontWeight: FontWeight.w800, letterSpacing: -0.5),
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headlineSmall: TextStyle(fontWeight: FontWeight.w800, letterSpacing: -0.3),
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titleLarge: TextStyle(fontWeight: FontWeight.w700),
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titleMedium: TextStyle(fontWeight: FontWeight.w700),
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titleSmall: TextStyle(fontWeight: FontWeight.w700),
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bodyLarge: TextStyle(height: 1.4),
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bodyMedium: TextStyle(height: 1.4),
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labelLarge: TextStyle(fontWeight: FontWeight.w700),
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);
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}
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}
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