feat: 알림 설정 개선 및 USD 환율 자동 적용

- 알림 권한 첫 부여 시 기본 설정 자동 적용 (2일전, 반복 알림 활성화)
- 반복 알림 설명 문구를 설정 상태에 따라 동적으로 변경
- USD 통화 구독에 대한 환율 자동 적용 기능 추가
- 설정 화면 텍스트 색상을 어두운 색상으로 변경하여 가독성 향상
- 광고 위젯 레이아웃 및 화면 간격 조정

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

lib/providers/notification_provider.dart

@@ -12,6 +12,7 @@ class NotificationProvider extends ChangeNotifier {
   static const String _reminderHourKey = 'reminder_hour';
   static const String _reminderMinuteKey = 'reminder_minute';
   static const String _dailyReminderKey = 'daily_reminder_enabled';
+  static const String _firstPermissionGrantedKey = 'first_permission_granted';
 
   bool _isEnabled = false;
   bool _isPaymentEnabled = true;
@@ -85,6 +86,12 @@ class NotificationProvider extends ChangeNotifier {
     try {
       _isEnabled = value;
       await NotificationService.setNotificationEnabled(value);
+      
+      // 첫 권한 부여 시 기본 설정 적용
+      if (value) {
+        await initializeDefaultSettingsOnFirstPermission();
+      }
+      
       notifyListeners();
     } catch (e) {
       debugPrint('알림 활성화 설정 중 오류 발생: $e');
@@ -259,4 +266,22 @@ class NotificationProvider extends ChangeNotifier {
       // 오류가 발생해도 앱 동작에 영향을 주지 않도록 처리
     }
   }
+
+  // 첫 권한 부여 시 기본 설정 초기화
+  Future<void> initializeDefaultSettingsOnFirstPermission() async {
+    try {
+      final firstGranted = await _secureStorage.read(key: _firstPermissionGrantedKey);
+      if (firstGranted != 'true') {
+        // 첫 권한 부여 시 기본값 설정
+        await setReminderDays(2); // 2일 전 알림
+        await setDailyReminderEnabled(true); // 반복 알림 활성화
+        await setPaymentEnabled(true); // 결제 예정 알림 활성화
+        
+        // 첫 권한 부여 플래그 저장
+        await _secureStorage.write(key: _firstPermissionGrantedKey, value: 'true');
+      }
+    } catch (e) {
+      debugPrint('기본 설정 초기화 중 오류 발생: $e');
+    }
+  }
 }

lib/providers/subscription_provider.dart

@@ -4,6 +4,7 @@ import 'package:hive/hive.dart';
 import 'package:uuid/uuid.dart';
 import '../models/subscription_model.dart';
 import '../services/notification_service.dart';
+import '../services/exchange_rate_service.dart';
 import 'category_provider.dart';
 
 class SubscriptionProvider extends ChangeNotifier {
@@ -15,9 +16,19 @@ class SubscriptionProvider extends ChangeNotifier {
   bool get isLoading => _isLoading;
 
   double get totalMonthlyExpense {
+    final exchangeRateService = ExchangeRateService();
+    final rate = exchangeRateService.cachedUsdToKrwRate ?? 
+                  ExchangeRateService.DEFAULT_USD_TO_KRW_RATE;
+    
     return _subscriptions.fold(
       0.0,
-      (sum, subscription) => sum + subscription.currentPrice, // 이벤트 가격 반영
+      (sum, subscription) {
+        final price = subscription.currentPrice;
+        if (subscription.currency == 'USD') {
+          return sum + (price * rate);
+        }
+        return sum + price;
+      },
     );
   }
 
@@ -44,6 +55,9 @@ class SubscriptionProvider extends ChangeNotifier {
       _isLoading = true;
       notifyListeners();
 
+      // 환율 정보 미리 로드
+      await ExchangeRateService().getUsdToKrwRate();
+
       _subscriptionBox = await Hive.openBox<SubscriptionModel>('subscriptions');
       await refreshSubscriptions();
       

lib/screens/analysis_screen.dart

@@ -107,11 +107,8 @@ class _AnalysisScreenState extends State<AnalysisScreen>
             
             // 네이티브 광고 위젯
             SliverToBoxAdapter(
-              child: Padding(
-                padding: const EdgeInsets.all(16),
               child: _buildAnimatedAd(),
             ),
-            ),
 
             const AnalysisScreenSpacer(),
 

lib/screens/settings_screen.dart

@@ -67,19 +67,18 @@ class SettingsScreen extends StatelessWidget {
     );
   }
 
-
-
   @override
   Widget build(BuildContext context) {
     return Column(
       children: [
+        Expanded(
+          child: ListView(
+            padding: EdgeInsets.zero,
+            children: [
+              // toolbar 높이 추가
               SizedBox(
                 height: kToolbarHeight + MediaQuery.of(context).padding.top,
               ),
-        Expanded(
-          child: ListView(
-              padding: const EdgeInsets.only(top: 20),
-              children: [
               // 광고 위젯 추가
               const NativeAdWidget(key: ValueKey('settings_ad')),
               const SizedBox(height: 16),
@@ -116,14 +115,20 @@ class SettingsScreen extends StatelessWidget {
                     return Column(
                       children: [
                         ListTile(
-                      title: const Text('알림 권한'),
+                          title: const Text(
-                      subtitle: const Text('알림을 받으려면 권한이 필요합니다'),
+                            '알림 권한',
+                            style: TextStyle(color: AppColors.textPrimary),
+                          ),
+                          subtitle: const Text(
+                            '알림을 받으려면 권한이 필요합니다',
+                            style: TextStyle(color: AppColors.textSecondary),
+                          ),
                           trailing: ElevatedButton(
                             onPressed: () async {
                               final granted =
                                   await NotificationService.requestPermission();
                               if (granted) {
-                            provider.setEnabled(true);
+                                await provider.setEnabled(true);
                               } else {
                                 ScaffoldMessenger.of(context).showSnackBar(
                                   SnackBar(
@@ -144,8 +149,14 @@ class SettingsScreen extends StatelessWidget {
                         const Divider(),
                         // 결제 예정 알림 기본 스위치
                         SwitchListTile(
-                      title: const Text('결제 예정 알림'),
+                          title: const Text(
-                      subtitle: const Text('결제 예정일 알림 받기'),
+                            '결제 예정 알림',
+                            style: TextStyle(color: AppColors.textPrimary),
+                          ),
+                          subtitle: const Text(
+                            '결제 예정일 알림 받기',
+                            style: TextStyle(color: AppColors.textSecondary),
+                          ),
                           value: provider.isPaymentEnabled,
                           onChanged: (value) {
                             provider.setPaymentEnabled(value);
@@ -187,12 +198,12 @@ class SettingsScreen extends StatelessWidget {
                                               mainAxisAlignment:
                                                   MainAxisAlignment.spaceEvenly,
                                               children: [
-                                            _buildReminderDayRadio(
+                                                _buildReminderDayRadio(context,
-                                                context, provider, 1, '1일 전'),
+                                                    provider, 1, '1일 전'),
-                                            _buildReminderDayRadio(
+                                                _buildReminderDayRadio(context,
-                                                context, provider, 2, '2일 전'),
+                                                    provider, 2, '2일 전'),
-                                            _buildReminderDayRadio(
+                                                _buildReminderDayRadio(context,
-                                                context, provider, 3, '3일 전'),
+                                                    provider, 3, '3일 전'),
                                               ],
                                             ),
                                           ),
@@ -211,8 +222,8 @@ class SettingsScreen extends StatelessWidget {
                                                 context: context,
                                                 initialTime: TimeOfDay(
                                                     hour: provider.reminderHour,
-                                                minute:
+                                                    minute: provider
-                                                    provider.reminderMinute),
+                                                        .reminderMinute),
                                               );
                                               if (picked != null) {
                                                 provider.setReminderTime(
@@ -220,8 +231,10 @@ class SettingsScreen extends StatelessWidget {
                                               }
                                             },
                                             child: Container(
-                                          padding: const EdgeInsets.symmetric(
+                                              padding:
-                                              vertical: 12, horizontal: 16),
+                                                  const EdgeInsets.symmetric(
+                                                      vertical: 12,
+                                                      horizontal: 16),
                                               decoration: BoxDecoration(
                                                 border: Border.all(
                                                   color: Theme.of(context)
@@ -239,19 +252,22 @@ class SettingsScreen extends StatelessWidget {
                                                       children: [
                                                         Icon(
                                                           Icons.access_time,
-                                                      color: Theme.of(context)
+                                                          color:
+                                                              Theme.of(context)
                                                                   .colorScheme
                                                                   .primary,
                                                           size: 22,
                                                         ),
-                                                    const SizedBox(width: 12),
+                                                        const SizedBox(
+                                                            width: 12),
                                                         Text(
                                                           '${provider.reminderHour.toString().padLeft(2, '0')}:${provider.reminderMinute.toString().padLeft(2, '0')}',
                                                           style: TextStyle(
                                                             fontSize: 16,
                                                             fontWeight:
                                                                 FontWeight.bold,
-                                                        color: Theme.of(context)
+                                                            color: Theme.of(
+                                                                    context)
                                                                 .colorScheme
                                                                 .onSurface,
                                                           ),
@@ -274,11 +290,13 @@ class SettingsScreen extends StatelessWidget {
                                           // 반복 알림 스위치 (2일전, 3일전 선택 시에만 활성화)
                                           if (provider.reminderDays >= 2)
                                             Padding(
-                                          padding:
+                                              padding: const EdgeInsets.only(
-                                              const EdgeInsets.only(top: 16.0),
+                                                  top: 16.0),
                                               child: Container(
-                                            padding: const EdgeInsets.symmetric(
+                                                padding:
-                                                vertical: 4, horizontal: 4),
+                                                    const EdgeInsets.symmetric(
+                                                        vertical: 4,
+                                                        horizontal: 4),
                                                 decoration: BoxDecoration(
                                                   color: Theme.of(context)
                                                       .colorScheme
@@ -289,11 +307,19 @@ class SettingsScreen extends StatelessWidget {
                                                 ),
                                                 child: SwitchListTile(
                                                   contentPadding:
-                                                  const EdgeInsets.symmetric(
+                                                      const EdgeInsets
+                                                          .symmetric(
                                                           horizontal: 12),
-                                              title: const Text('1일마다 반복 알림'),
+                                                  title:
-                                              subtitle: const Text(
+                                                      const Text('1일마다 반복 알림'),
-                                                  '결제일까지 매일 알림을 받습니다'),
+                                                  subtitle: Text(
+                                                    provider.isDailyReminderEnabled
+                                                        ? '결제일까지 매일 알림을 받습니다'
+                                                        : '결제 ${provider.reminderDays}일 전에 알림을 받습니다',
+                                                    style: TextStyle(
+                                                        color: AppColors
+                                                            .textLight),
+                                                  ),
                                                   value: provider
                                                       .isDailyReminderEnabled,
                                                   activeColor: Theme.of(context)
@@ -335,21 +361,30 @@ class SettingsScreen extends StatelessWidget {
                 margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                 padding: const EdgeInsets.all(8),
                 child: ListTile(
-              title: const Text('앱 정보'),
+                  title: const Text(
-              subtitle: const Text('버전 1.0.0'),
+                    '앱 정보',
-              leading: const Icon(Icons.info),
+                    style: TextStyle(color: AppColors.textPrimary),
+                  ),
+                  subtitle: const Text(
+                    '버전 1.0.0',
+                    style: TextStyle(color: AppColors.textSecondary),
+                  ),
+                  leading: const Icon(
+                    Icons.info,
+                    color: AppColors.textSecondary,
+                  ),
                   onTap: () async {
                     // 웹 환경에서는 기본 다이얼로그 표시
                     if (kIsWeb) {
                       showAboutDialog(
                         context: context,
-                    applicationName: 'SubManager',
+                        applicationName: 'Digital Rent Manager',
                         applicationVersion: '1.0.0',
                         applicationIcon: const FlutterLogo(size: 50),
                         children: [
-                      const Text('구독 관리 앱'),
+                          const Text('디지털 월세 관리 앱'),
                           const SizedBox(height: 8),
-                      const Text('개발자: SubManager Team'),
+                          const Text('개발자: Julian Sul'),
                         ],
                       );
                       return;
@@ -372,7 +407,8 @@ class SettingsScreen extends StatelessWidget {
                     if (storeUrl.isNotEmpty) {
                       try {
                         final Uri url = Uri.parse(storeUrl);
-                    await launchUrl(url, mode: LaunchMode.externalApplication);
+                        await launchUrl(url,
+                            mode: LaunchMode.externalApplication);
                       } catch (e) {
                         if (context.mounted) {
                           ScaffoldMessenger.of(context).showSnackBar(

lib/screens/sms_scan_screen.dart

@@ -366,6 +366,10 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
       final int safeRepeatCount =
           subscription.repeatCount > 0 ? subscription.repeatCount : 1;
 
+      // 카테고리 설정 로직
+      final categoryId = _selectedCategoryId ?? subscription.category ?? _getDefaultCategoryId();
+      print('카테고리 설정 - 선택된: $_selectedCategoryId, 자동매칭: ${subscription.category}, 최종: $categoryId');
+
       await provider.addSubscription(
         serviceName: subscription.serviceName,
         monthlyCost: subscription.monthlyCost,
@@ -375,7 +379,7 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
         isAutoDetected: true,
         repeatCount: safeRepeatCount,
         lastPaymentDate: subscription.lastPaymentDate,
-        categoryId: _selectedCategoryId ?? subscription.category,
+        categoryId: categoryId,
         currency: subscription.currency, // 통화 단위 정보 추가
       );
 
@@ -587,12 +591,27 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
     }
   }
 
+  // 기본 카테고리 ID (기타) 반환
+  String _getDefaultCategoryId() {
+    final categoryProvider = Provider.of<CategoryProvider>(context, listen: false);
+    final otherCategory = categoryProvider.categories.firstWhere(
+      (cat) => cat.name == '기타',
+      orElse: () => categoryProvider.categories.first, // 만약 "기타"가 없으면 첫 번째 카테고리
+    );
+    print('기본 카테고리 설정: ${otherCategory.name} (ID: ${otherCategory.id})');
+    return otherCategory.id;
+  }
+
   @override
   Widget build(BuildContext context) {
     return SingleChildScrollView(
-      padding: const EdgeInsets.all(16.0),
+      padding: EdgeInsets.zero,
       child: Column(
         children: [
+          // toolbar 높이 추가
+          SizedBox(
+            height: kToolbarHeight + MediaQuery.of(context).padding.top,
+          ),
           _isLoading
               ? _buildLoadingState()
               : (_scannedSubscriptions.isEmpty
@@ -609,7 +628,9 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
 
   // 로딩 상태 UI
   Widget _buildLoadingState() {
-    return Center(
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 16.0),
+      child: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
@@ -622,6 +643,7 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
             const ThemedText('구독 서비스를 찾고 있습니다', opacity: 0.7, forceDark: true),
           ],
         ),
+      ),
     );
   }
 
@@ -633,20 +655,19 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
         const NativeAdWidget(key: ValueKey('sms_scan_start_ad')),
         const SizedBox(height: 48),
         Padding(
-          padding: const EdgeInsets.symmetric(vertical: 32),
+          padding: const EdgeInsets.symmetric(horizontal: 16.0),
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,
             children: [
               if (_errorMessage != null)
                 Padding(
-              padding: const EdgeInsets.all(16.0),
+                  padding: const EdgeInsets.only(bottom: 24.0),
                   child: ThemedText(
                     _errorMessage!,
                     color: Colors.red,
                     textAlign: TextAlign.center,
                   ),
                 ),
-          const SizedBox(height: 24),
               const ThemedText(
                 '2회 이상 결제된 구독 서비스 찾기',
                 fontSize: 20,
@@ -655,7 +676,7 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
               ),
               const SizedBox(height: 16),
               const Padding(
-            padding: EdgeInsets.symmetric(horizontal: 32.0),
+                padding: EdgeInsets.symmetric(horizontal: 16.0),
                 child: ThemedText(
                   '문자 메시지를 스캔하여 반복적으로 결제된 구독 서비스를 자동으로 찾습니다. 서비스명과 금액을 추출하여 쉽게 구독을 추가할 수 있습니다.',
                   textAlign: TextAlign.center,
@@ -702,6 +723,11 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
         // 광고 위젯 추가
         const NativeAdWidget(key: ValueKey('sms_scan_result_ad')),
         const SizedBox(height: 16),
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16.0),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
               // 진행 상태 표시
               LinearProgressIndicator(
                 value: (_currentIndex + 1) / _scannedSubscriptions.length,
@@ -888,6 +914,9 @@ class _SmsScanScreenState extends State<SmsScanScreen> {
               ),
             ),
           ],
+        ),
+      ),
+      ],
     );
   }
 

lib/services/exchange_rate_service.dart

@@ -22,6 +22,12 @@ class ExchangeRateService {
   // API 요청 URL (ExchangeRate-API 사용)
   final String _apiUrl = 'https://api.exchangerate-api.com/v4/latest/USD';
 
+  // 기본 환율 상수
+  static const double DEFAULT_USD_TO_KRW_RATE = 1350.0;
+
+  // 캐싱된 환율 반환 (동기적)
+  double? get cachedUsdToKrwRate => _usdToKrwRate;
+
   /// 현재 USD to KRW 환율 정보를 가져옵니다.
   /// 최근 6시간 이내 조회했던 정보가 있다면 캐싱된 정보를 반환합니다.
   Future<double?> getUsdToKrwRate() async {

lib/widgets/floating_navigation_bar.dart

@@ -66,19 +66,38 @@ class _FloatingNavigationBarState extends State<FloatingNavigationBar>
       builder: (context, child) {
         return Positioned(
           bottom: 20,
-          left: 20,
+          left: 16,
-          right: 20,
+          right: 16,
           height: 88,
           child: Transform.translate(
             offset: Offset(0, 100 * (1 - _animation.value)),
             child: Opacity(
               opacity: _animation.value,
-              child: GlassmorphismCard(
+              child: Stack(
+                children: [
+                  // 흰색 배경 레이어 (완전 불투명)
+                  Container(
+                    decoration: BoxDecoration(
+                      color: AppColors.surfaceColor,
+                      borderRadius: BorderRadius.circular(24),
+                      boxShadow: const [
+                        BoxShadow(
+                          color: AppColors.shadowBlack,
+                          blurRadius: 20,
+                          spreadRadius: -5,
+                          offset: Offset(0, 10),
+                        ),
+                      ],
+                    ),
+                  ),
+                  // 글래스모피즘 레이어 (시각적 효과)
+                  GlassmorphismCard(
                     padding:
                         const EdgeInsets.symmetric(vertical: 8, horizontal: 8),
                     borderRadius: 24,
                     blur: 10.0,
                     backgroundColor: Colors.transparent,
+                    boxShadow: const [], // 그림자는 배경 레이어에서 처리
                     child: Row(
                       mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                       children: [
@@ -112,6 +131,8 @@ class _FloatingNavigationBarState extends State<FloatingNavigationBar>
                       ],
                     ),
                   ),
+                ],
+              ),
             ),
           ),
         );

lib/widgets/main_summary_card.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import '../providers/subscription_provider.dart';
+import '../services/currency_util.dart';
 import '../theme/app_colors.dart';
 import 'animated_wave_background.dart';
 import 'glassmorphism_card.dart';
@@ -35,9 +36,9 @@ class MainScreenSummaryCard extends StatelessWidget {
       opacity: Tween<double>(begin: 0.0, end: 1.0).animate(
           CurvedAnimation(parent: fadeController, curve: Curves.easeIn)),
       child: Padding(
-        padding: const EdgeInsets.fromLTRB(20, 16, 20, 4),
+        padding: const EdgeInsets.fromLTRB(16, 23, 16, 12),
         child: GlassmorphismCard(
-          borderRadius: 24,
+          borderRadius: 16,
           blur: 15,
           backgroundColor: AppColors.glassCard,
           gradient: LinearGradient(
@@ -77,6 +78,9 @@ class MainScreenSummaryCard extends StatelessWidget {
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       mainAxisSize: MainAxisSize.min,
+                      children: [
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
                           children: [
                             Text(
                               '이번 달 총 구독 비용',
@@ -87,6 +91,38 @@ class MainScreenSummaryCard extends StatelessWidget {
                                 fontWeight: FontWeight.w500,
                               ),
                             ),
+                            FutureBuilder<String>(
+                              future: CurrencyUtil.getExchangeRateInfo(),
+                              builder: (context, snapshot) {
+                                if (snapshot.hasData && snapshot.data!.isNotEmpty) {
+                                  return Container(
+                                    padding: const EdgeInsets.symmetric(
+                                      horizontal: 8,
+                                      vertical: 4,
+                                    ),
+                                    decoration: BoxDecoration(
+                                      color: const Color(0xFFE5F2FF),
+                                      borderRadius: BorderRadius.circular(4),
+                                      border: Border.all(
+                                        color: const Color(0xFFBFDBFE),
+                                        width: 1,
+                                      ),
+                                    ),
+                                    child: Text(
+                                      snapshot.data!,
+                                      style: const TextStyle(
+                                        fontSize: 12,
+                                        fontWeight: FontWeight.w500,
+                                        color: Color(0xFF3B82F6),
+                                      ),
+                                    ),
+                                  );
+                                }
+                                return const SizedBox.shrink();
+                              },
+                            ),
+                          ],
+                        ),
                         const SizedBox(height: 8),
                         Row(
                           crossAxisAlignment: CrossAxisAlignment.baseline,

lib/widgets/native_ad_widget.dart

@@ -187,7 +187,7 @@ class _NativeAdWidgetState extends State<NativeAdWidget> {
 
     // 광고 정상 노출
     return Padding(
-      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
       child: GlassmorphismCard(
         borderRadius: 16,
         blur: 10,