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398
lib/core/theme/theme_showcase.dart
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398
lib/core/theme/theme_showcase.dart
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'theme.dart';
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/// Theme showcase page demonstrating Material 3 design system
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class ThemeShowcasePage extends ConsumerWidget {
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/// Creates a theme showcase page
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const ThemeShowcasePage({super.key});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final theme = Theme.of(context);
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final colorScheme = theme.colorScheme;
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final textTheme = theme.textTheme;
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return Scaffold(
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appBar: AppBar(
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title: const Text('Material 3 Theme Showcase'),
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actions: const [
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ThemeToggleIconButton(),
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SizedBox(width: 16),
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],
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),
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body: SingleChildScrollView(
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padding: AppSpacing.responsivePadding(context),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// Theme Mode Switch Section
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_buildSection(
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context,
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'Theme Mode Switch',
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Column(
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children: [
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const ThemeModeSwitch(
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style: ThemeSwitchStyle.segmented,
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showLabel: true,
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),
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AppSpacing.verticalSpaceLG,
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const AnimatedThemeModeSwitch(),
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AppSpacing.verticalSpaceLG,
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const ThemeModeSwitch(
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style: ThemeSwitchStyle.toggle,
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showLabel: true,
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labelText: 'Dark Mode',
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),
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],
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),
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),
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// Typography Section
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_buildSection(
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context,
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'Typography',
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text('Display Large', style: textTheme.displayLarge),
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AppSpacing.verticalSpaceSM,
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Text('Display Medium', style: textTheme.displayMedium),
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AppSpacing.verticalSpaceSM,
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Text('Display Small', style: textTheme.displaySmall),
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AppSpacing.verticalSpaceMD,
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Text('Headline Large', style: textTheme.headlineLarge),
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AppSpacing.verticalSpaceXS,
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Text('Headline Medium', style: textTheme.headlineMedium),
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AppSpacing.verticalSpaceXS,
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Text('Headline Small', style: textTheme.headlineSmall),
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AppSpacing.verticalSpaceMD,
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Text('Title Large', style: textTheme.titleLarge),
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AppSpacing.verticalSpaceXS,
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Text('Title Medium', style: textTheme.titleMedium),
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AppSpacing.verticalSpaceXS,
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Text('Title Small', style: textTheme.titleSmall),
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AppSpacing.verticalSpaceMD,
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Text('Body Large', style: textTheme.bodyLarge),
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AppSpacing.verticalSpaceXS,
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Text('Body Medium', style: textTheme.bodyMedium),
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AppSpacing.verticalSpaceXS,
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Text('Body Small', style: textTheme.bodySmall),
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AppSpacing.verticalSpaceMD,
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Text('Label Large', style: textTheme.labelLarge),
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AppSpacing.verticalSpaceXS,
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Text('Label Medium', style: textTheme.labelMedium),
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AppSpacing.verticalSpaceXS,
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Text('Label Small', style: textTheme.labelSmall),
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],
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),
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),
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// Color Palette Section
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_buildSection(
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context,
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'Color Palette',
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Column(
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children: [
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_buildColorRow(
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context,
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'Primary',
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colorScheme.primary,
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colorScheme.onPrimary,
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),
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_buildColorRow(
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context,
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'Primary Container',
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colorScheme.primaryContainer,
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colorScheme.onPrimaryContainer,
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),
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_buildColorRow(
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context,
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'Secondary',
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colorScheme.secondary,
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colorScheme.onSecondary,
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),
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_buildColorRow(
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context,
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'Secondary Container',
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colorScheme.secondaryContainer,
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colorScheme.onSecondaryContainer,
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),
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_buildColorRow(
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context,
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'Tertiary',
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colorScheme.tertiary,
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colorScheme.onTertiary,
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),
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_buildColorRow(
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context,
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'Error',
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colorScheme.error,
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colorScheme.onError,
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),
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_buildColorRow(
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context,
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'Surface',
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colorScheme.surface,
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colorScheme.onSurface,
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),
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],
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),
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),
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// Buttons Section
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_buildSection(
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context,
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'Buttons',
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Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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FilledButton(
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onPressed: () {},
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child: const Text('Filled Button'),
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),
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AppSpacing.verticalSpaceSM,
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ElevatedButton(
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onPressed: () {},
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child: const Text('Elevated Button'),
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),
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AppSpacing.verticalSpaceSM,
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OutlinedButton(
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onPressed: () {},
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child: const Text('Outlined Button'),
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),
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AppSpacing.verticalSpaceSM,
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TextButton(
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onPressed: () {},
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child: const Text('Text Button'),
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),
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AppSpacing.verticalSpaceSM,
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Row(
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children: [
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IconButton(
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onPressed: () {},
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icon: const Icon(Icons.favorite),
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),
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AppSpacing.horizontalSpaceSM,
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IconButton.filled(
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onPressed: () {},
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icon: const Icon(Icons.favorite),
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),
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AppSpacing.horizontalSpaceSM,
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IconButton.outlined(
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onPressed: () {},
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icon: const Icon(Icons.favorite),
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),
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],
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),
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],
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),
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),
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// Form Components Section
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_buildSection(
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context,
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'Form Components',
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Column(
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children: [
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const TextField(
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decoration: InputDecoration(
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labelText: 'Label',
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hintText: 'Hint text',
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helperText: 'Helper text',
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),
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),
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AppSpacing.verticalSpaceLG,
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const TextField(
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decoration: InputDecoration(
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labelText: 'Error state',
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errorText: 'Error message',
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prefixIcon: Icon(Icons.error),
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),
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),
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AppSpacing.verticalSpaceLG,
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Row(
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children: [
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Checkbox(
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value: true,
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onChanged: (value) {},
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),
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const Text('Checkbox'),
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AppSpacing.horizontalSpaceLG,
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Radio<bool>(
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value: true,
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groupValue: true,
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onChanged: null,
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),
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const Text('Radio'),
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const Spacer(),
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Switch(
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value: true,
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onChanged: (value) {},
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),
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],
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),
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],
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),
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),
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// Cards Section
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_buildSection(
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context,
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'Cards',
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Column(
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children: [
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Card(
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child: Padding(
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padding: AppSpacing.paddingLG,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'Card Title',
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style: theme.textTheme.titleMedium,
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),
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AppSpacing.verticalSpaceSM,
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Text(
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'Card content with some descriptive text that demonstrates how cards look in the Material 3 design system.',
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style: theme.textTheme.bodyMedium,
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),
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AppSpacing.verticalSpaceSM,
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Row(
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mainAxisAlignment: MainAxisAlignment.end,
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children: [
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TextButton(
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onPressed: () {},
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child: const Text('Action'),
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),
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],
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),
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],
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),
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),
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),
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AppSpacing.verticalSpaceSM,
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Card.filled(
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child: Padding(
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padding: AppSpacing.paddingLG,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'Filled Card',
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style: theme.textTheme.titleMedium,
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),
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AppSpacing.verticalSpaceSM,
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Text(
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'This is a filled card variant.',
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style: theme.textTheme.bodyMedium,
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),
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],
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),
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),
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),
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],
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),
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),
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// Spacing Demonstration
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_buildSection(
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context,
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'Spacing System',
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text('XS (4dp)', style: theme.textTheme.bodyMedium),
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Container(
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height: 2,
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width: AppSpacing.xs,
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color: colorScheme.primary,
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),
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AppSpacing.verticalSpaceSM,
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Text('SM (8dp)', style: theme.textTheme.bodyMedium),
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Container(
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height: 2,
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width: AppSpacing.sm,
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color: colorScheme.primary,
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),
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AppSpacing.verticalSpaceSM,
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Text('MD (12dp)', style: theme.textTheme.bodyMedium),
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Container(
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height: 2,
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width: AppSpacing.md,
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color: colorScheme.primary,
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),
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AppSpacing.verticalSpaceSM,
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Text('LG (16dp)', style: theme.textTheme.bodyMedium),
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Container(
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height: 2,
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width: AppSpacing.lg,
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color: colorScheme.primary,
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),
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AppSpacing.verticalSpaceSM,
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Text('XL (20dp)', style: theme.textTheme.bodyMedium),
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Container(
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height: 2,
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width: AppSpacing.xl,
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color: colorScheme.primary,
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),
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AppSpacing.verticalSpaceSM,
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Text('XXL (24dp)', style: theme.textTheme.bodyMedium),
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Container(
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height: 2,
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width: AppSpacing.xxl,
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color: colorScheme.primary,
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),
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],
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),
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),
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],
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),
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),
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);
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}
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Widget _buildSection(BuildContext context, String title, Widget content) {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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title,
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style: Theme.of(context).textTheme.headlineSmall,
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),
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AppSpacing.verticalSpaceLG,
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content,
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AppSpacing.verticalSpaceXXL,
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],
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);
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}
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Widget _buildColorRow(
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BuildContext context,
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String label,
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Color color,
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Color onColor,
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) {
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: AppSpacing.xs),
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child: Container(
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height: 48,
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decoration: BoxDecoration(
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color: color,
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borderRadius: AppSpacing.radiusSM,
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border: Border.all(
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color: Theme.of(context).colorScheme.outline.withValues(alpha: 0.3),
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),
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),
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child: Center(
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child: Text(
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label,
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style: Theme.of(context).textTheme.labelMedium?.copyWith(
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color: onColor,
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),
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),
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),
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),
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);
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}
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}
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