iykyka/mobile/lib/theme/app_theme.dart

224 lines
9.2 KiB
Dart

import 'package:flutter/material.dart';
/// Central design tokens for 와카뷰 (Ykavu) — "aurora glass" direction.
/// `backgroundGradient` + the glow orbs in [GradientBackdrop] paint behind
/// every screen (wired into `MaterialApp.builder`); cards/inputs/app bars
/// are semi-transparent "glass" surfaces with a soft colored shadow so they
/// visibly lift off that background. `twinAccent` stays a separate warm
/// accent so a twin-written bubble never reads as something the human
/// actually typed (PRD §3.1 와카뷰 뱃지).
class AppTheme {
AppTheme._();
static const _seed = Color(0xFF6D5BD0);
/// Brand gradient used for the wordmark, brand mark and primary CTAs.
static const brandGradient = LinearGradient(
begin: Alignment.centerLeft,
end: Alignment.centerRight,
colors: [Color(0xFF6D5BD0), Color(0xFFA855C9), Color(0xFFE0609A)],
);
static Color twinAccent(Brightness brightness) =>
brightness == Brightness.dark ? Colors.amber.shade300 : Colors.amber.shade800;
/// Diagonal aurora gradient painted behind every screen. Light: violet →
/// sky → pink, more saturated than a "safe" pastel so it reads as
/// intentional branding rather than a default Material backdrop. Dark:
/// deep indigo → navy → plum. Paired with the blurred glow orbs in
/// [GradientBackdrop].
static LinearGradient backgroundGradient(Brightness brightness) {
if (brightness == Brightness.dark) {
return const LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
colors: [Color(0xFF201A3D), Color(0xFF16213E), Color(0xFF351C3C)],
);
}
return const LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
colors: [Color(0xFFDCCBFF), Color(0xFFC3E4FF), Color(0xFFFFC9E8)],
);
}
/// Soft blurred accent blobs layered over [backgroundGradient] by
/// [GradientBackdrop] for depth ("aurora glow").
static Color glowPrimary(Brightness brightness) => brightness == Brightness.dark
? const Color(0xFF8B7CF6).withValues(alpha: 0.35)
: const Color(0xFFB79CFF).withValues(alpha: 0.55);
static Color glowSecondary(Brightness brightness) => brightness == Brightness.dark
? const Color(0xFFE879C4).withValues(alpha: 0.25)
: const Color(0xFFFFA9DC).withValues(alpha: 0.50);
/// "Glass" fill for cards/panels — semi-transparent so the gradient
/// behind still reads through, with a bright border for the classic
/// glassmorphism edge highlight and a tinted shadow so the surface
/// visibly lifts off the backdrop instead of blending into it.
static Color glassFill(Brightness brightness) => brightness == Brightness.dark
? Colors.white.withValues(alpha: 0.08)
: Colors.white.withValues(alpha: 0.72);
static Color glassBorder(Brightness brightness) => brightness == Brightness.dark
? Colors.white.withValues(alpha: 0.16)
: Colors.white.withValues(alpha: 0.85);
static Color glassShadow(Brightness brightness) => brightness == Brightness.dark
? Colors.black.withValues(alpha: 0.45)
: const Color(0xFF6D5BD0).withValues(alpha: 0.18);
static ThemeData light() => _build(Brightness.light);
static ThemeData dark() => _build(Brightness.dark);
static ThemeData _build(Brightness brightness) {
final scheme = ColorScheme.fromSeed(seedColor: _seed, brightness: brightness);
final glass = glassFill(brightness);
final glassEdge = glassBorder(brightness);
final glassShadowColor = glassShadow(brightness);
final glassShape = RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18),
side: BorderSide(color: glassEdge, width: 1),
);
return ThemeData(
useMaterial3: true,
brightness: brightness,
colorScheme: scheme,
// Transparent so the gradient painted by MaterialApp.builder shows
// through behind every Scaffold.
scaffoldBackgroundColor: Colors.transparent,
visualDensity: VisualDensity.comfortable,
textTheme: _textTheme(),
appBarTheme: AppBarTheme(
backgroundColor: Colors.transparent,
foregroundColor: scheme.onSurface,
surfaceTintColor: Colors.transparent,
elevation: 0,
scrolledUnderElevation: 0,
centerTitle: false,
titleTextStyle: TextStyle(
fontSize: 20,
fontWeight: FontWeight.w800,
color: scheme.onSurface,
letterSpacing: -0.2,
),
),
cardTheme: CardThemeData(
elevation: 8,
shadowColor: glassShadowColor,
color: glass,
shape: glassShape,
margin: EdgeInsets.zero,
),
listTileTheme: ListTileThemeData(
iconColor: scheme.onSurfaceVariant,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
),
dividerTheme: DividerThemeData(color: scheme.outlineVariant, space: 32, thickness: 1),
inputDecorationTheme: InputDecorationTheme(
filled: true,
fillColor: glass,
contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(14),
borderSide: BorderSide(color: glassEdge, width: 1),
),
enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(14),
borderSide: BorderSide(color: glassEdge, width: 1),
),
focusedBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(14),
borderSide: BorderSide(color: scheme.primary, width: 1.6),
),
errorBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(14),
borderSide: BorderSide(color: scheme.error, width: 1.2),
),
focusedErrorBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(14),
borderSide: BorderSide(color: scheme.error, width: 1.6),
),
hintStyle: TextStyle(color: scheme.onSurfaceVariant.withValues(alpha: 0.7)),
),
filledButtonTheme: FilledButtonThemeData(
style: FilledButton.styleFrom(
padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
textStyle: const TextStyle(fontWeight: FontWeight.w700),
),
),
outlinedButtonTheme: OutlinedButtonThemeData(
style: OutlinedButton.styleFrom(
padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
),
),
textButtonTheme: TextButtonThemeData(
style: TextButton.styleFrom(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
),
),
iconButtonTheme: IconButtonThemeData(
style: IconButton.styleFrom(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
),
),
segmentedButtonTheme: SegmentedButtonThemeData(
style: SegmentedButton.styleFrom(
backgroundColor: glass,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
),
),
chipTheme: ChipThemeData(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
side: BorderSide(color: glassEdge, width: 1),
),
side: BorderSide.none,
backgroundColor: glass,
labelStyle: TextStyle(color: scheme.onSurfaceVariant, fontWeight: FontWeight.w600, fontSize: 12),
padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
),
floatingActionButtonTheme: FloatingActionButtonThemeData(
backgroundColor: scheme.primary,
foregroundColor: scheme.onPrimary,
elevation: 4,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(18)),
),
snackBarTheme: SnackBarThemeData(
behavior: SnackBarBehavior.floating,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
),
bannerTheme: MaterialBannerThemeData(
backgroundColor: glass,
padding: const EdgeInsets.all(16),
),
dialogTheme: DialogThemeData(
backgroundColor: brightness == Brightness.dark
? const Color(0xFF211D3D)
: Colors.white.withValues(alpha: 0.95),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
),
progressIndicatorTheme: ProgressIndicatorThemeData(color: scheme.primary),
);
}
static TextTheme _textTheme() {
return const TextTheme(
displayLarge: TextStyle(fontWeight: FontWeight.w800, letterSpacing: -1.2),
displaySmall: TextStyle(fontWeight: FontWeight.w800, letterSpacing: -0.5),
headlineSmall: TextStyle(fontWeight: FontWeight.w800, letterSpacing: -0.3),
titleLarge: TextStyle(fontWeight: FontWeight.w700),
titleMedium: TextStyle(fontWeight: FontWeight.w700),
titleSmall: TextStyle(fontWeight: FontWeight.w700),
bodyLarge: TextStyle(height: 1.4),
bodyMedium: TextStyle(height: 1.4),
labelLarge: TextStyle(fontWeight: FontWeight.w700),
);
}
}