gpt-taste
gpt taste
flutter-ui-design
FlutterアプリのモダンUIデザインガイドライン。Material Design 3をベースに、洗練されたビジュアルを実現。
Full skill instructions
このスキルは、FlutterアプリのUIを「ありきたりなデフォルト」から脱却させ、プロフェッショナルで印象的なデザインを実現するためのガイドラインを提供します。
Robotoのみの使用// Google Fontsでモダンなフォントを使用
import 'package:google_fonts/google_fonts.dart';
// タイトル用: 個性的なディスプレイフォント
GoogleFonts.poppins(fontWeight: FontWeight.w700)
GoogleFonts.inter(fontWeight: FontWeight.w800)
GoogleFonts.plusJakartaSans()
// 本文用: 読みやすいサンセリフ
GoogleFonts.inter()
GoogleFonts.dmSans()
// コントラストを意識したサイズ階層
headlineLarge: 32sp, weight: 800
headlineMedium: 24sp, weight: 700
titleLarge: 20sp, weight: 600
bodyLarge: 16sp, weight: 400
labelSmall: 12sp, weight: 500
w300 と w800 を組み合わせる// ダークテーマ: 深みのある背景 + 鮮やかなアクセント
ColorScheme.dark(
surface: Color(0xFF0F0F14), // 深いダークグレー
surfaceContainerHighest: Color(0xFF1A1A23),
primary: Color(0xFF6366F1), // 鮮やかなインディゴ
secondary: Color(0xFF22D3EE), // シアンアクセント
tertiary: Color(0xFFF472B6), // ピンクアクセント
)
// ライトテーマ: クリーンな白 + ビビッドなアクセント
ColorScheme.light(
surface: Color(0xFFFAFAFC),
surfaceContainerHighest: Color(0xFFF1F5F9),
primary: Color(0xFF4F46E5), // インディゴ
secondary: Color(0xFF0EA5E9), // スカイブルー
tertiary: Color(0xFFEC4899), // ピンク
)
// カードに微妙な立体感
Card(
elevation: 0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16),
),
color: theme.colorScheme.surfaceContainerHighest,
child: ...
)
// ソフトシャドウ(コントラスト控えめ)
BoxDecoration(
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.04),
blurRadius: 10,
offset: Offset(0, 4),
),
],
)
// グラスモーフィズム効果
ClipRRect(
borderRadius: BorderRadius.circular(16),
child: BackdropFilter(
filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
child: Container(
color: Colors.white.withOpacity(0.1),
child: ...
),
),
)
// ページ遷移: スムーズなフェード+スライド
PageRouteBuilder(
transitionDuration: Duration(milliseconds: 300),
pageBuilder: (_, __, ___) => DestinationPage(),
transitionsBuilder: (_, animation, __, child) {
return FadeTransition(
opacity: animation,
child: SlideTransition(
position: Tween<Offset>(
begin: Offset(0, 0.05),
end: Offset.zero,
).animate(CurvedAnimation(
parent: animation,
curve: Curves.easeOutCubic,
)),
child: child,
),
);
},
)
// リスト項目: Staggered Animation
AnimatedList + interval-based delays
// タップフィードバック: 微細なスケール
Transform.scale(
scale: isPressed ? 0.98 : 1.0,
child: AnimatedContainer(
duration: Duration(milliseconds: 100),
...
),
)
easeOutCubic、easeInOutCubic を基本に// 8px基準のスペーシングシステム
const spacing = (
xs: 4.0,
sm: 8.0,
md: 16.0,
lg: 24.0,
xl: 32.0,
xxl: 48.0,
);
// コンテンツエリアの余白
Padding(
padding: EdgeInsets.symmetric(horizontal: 20, vertical: 16),
child: ...
)
// カード内の余白は外より大きく
Card(
child: Padding(
padding: EdgeInsets.all(20),
child: ...
),
)
// 要素間のギャップ
SizedBox(height: 16) // 関連要素間
SizedBox(height: 32) // セクション間
// プライマリボタン: 角丸 + 十分なパディング
FilledButton(
style: FilledButton.styleFrom(
padding: EdgeInsets.symmetric(horizontal: 24, vertical: 16),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(12),
),
),
child: Text('Action'),
)
// アウトラインボタン
OutlinedButton(
style: OutlinedButton.styleFrom(
side: BorderSide(color: theme.colorScheme.outline, width: 1.5),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(12),
),
),
)
TextField(
decoration: InputDecoration(
filled: true,
fillColor: theme.colorScheme.surfaceContainerHighest,
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(12),
borderSide: BorderSide.none,
),
focusedBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(12),
borderSide: BorderSide(
color: theme.colorScheme.primary,
width: 2,
),
),
contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 16),
),
)
FloatingActionButton(
elevation: 2,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16),
),
child: Icon(Icons.add),
)
// グラデーション背景
Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
colors: [
theme.colorScheme.surface,
theme.colorScheme.surface.withOpacity(0.95),
],
),
),
)
// サブトルなパターン(ドット、グリッド)
CustomPaint(
painter: DotPatternPainter(
color: theme.colorScheme.outline.withOpacity(0.05),
spacing: 20,
),
)
UIを実装する際のチェックリスト:
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