feat: API 인증 시스템 구현 및 로그인 화면 연동

- AuthService, AuthRemoteDataSource 구현
- JWT 토큰 관리 (SecureStorage 사용)
- 로그인 화면 API 연동 및 에러 처리
- freezed 패키지로 Auth 관련 DTO 모델 생성
- 의존성 주입 설정 업데이트

lib/data/datasources/remote/auth_remote_datasource.dart

@@ -0,0 +1,104 @@
+import 'package:dartz/dartz.dart';
+import 'package:injectable/injectable.dart';
+import 'package:superport/core/errors/exceptions.dart';
+import 'package:superport/core/errors/failures.dart';
+import 'package:superport/data/datasources/remote/api_client.dart';
+import 'package:superport/data/models/auth/login_request.dart';
+import 'package:superport/data/models/auth/login_response.dart';
+import 'package:superport/data/models/auth/logout_request.dart';
+import 'package:superport/data/models/auth/refresh_token_request.dart';
+import 'package:superport/data/models/auth/token_response.dart';
+
+abstract class AuthRemoteDataSource {
+  Future<Either<Failure, LoginResponse>> login(LoginRequest request);
+  Future<Either<Failure, void>> logout(LogoutRequest request);
+  Future<Either<Failure, TokenResponse>> refreshToken(RefreshTokenRequest request);
+}
+
+@LazySingleton(as: AuthRemoteDataSource)
+class AuthRemoteDataSourceImpl implements AuthRemoteDataSource {
+  final ApiClient _apiClient;
+
+  AuthRemoteDataSourceImpl(this._apiClient);
+
+  @override
+  Future<Either<Failure, LoginResponse>> login(LoginRequest request) async {
+    try {
+      final response = await _apiClient.post(
+        '/auth/login',
+        data: request.toJson(),
+      );
+
+      if (response.success && response.data != null) {
+        final loginResponse = LoginResponse.fromJson(response.data);
+        return Right(loginResponse);
+      } else {
+        return Left(ServerFailure(
+          message: response.error?.message ?? '로그인 실패',
+        ));
+      }
+    } catch (e) {
+      if (e is ApiException) {
+        if (e.statusCode == 401) {
+          return Left(AuthenticationFailure(
+            message: '이메일 또는 비밀번호가 올바르지 않습니다.',
+          ));
+        }
+        return Left(ServerFailure(message: e.message));
+      }
+      return Left(ServerFailure(message: '로그인 중 오류가 발생했습니다.'));
+    }
+  }
+
+  @override
+  Future<Either<Failure, void>> logout(LogoutRequest request) async {
+    try {
+      final response = await _apiClient.post(
+        '/auth/logout',
+        data: request.toJson(),
+      );
+
+      if (response.success) {
+        return const Right(null);
+      } else {
+        return Left(ServerFailure(
+          message: response.error?.message ?? '로그아웃 실패',
+        ));
+      }
+    } catch (e) {
+      if (e is ApiException) {
+        return Left(ServerFailure(message: e.message));
+      }
+      return Left(ServerFailure(message: '로그아웃 중 오류가 발생했습니다.'));
+    }
+  }
+
+  @override
+  Future<Either<Failure, TokenResponse>> refreshToken(RefreshTokenRequest request) async {
+    try {
+      final response = await _apiClient.post(
+        '/auth/refresh',
+        data: request.toJson(),
+      );
+
+      if (response.success && response.data != null) {
+        final tokenResponse = TokenResponse.fromJson(response.data);
+        return Right(tokenResponse);
+      } else {
+        return Left(ServerFailure(
+          message: response.error?.message ?? '토큰 갱신 실패',
+        ));
+      }
+    } catch (e) {
+      if (e is ApiException) {
+        if (e.statusCode == 401) {
+          return Left(AuthenticationFailure(
+            message: '인증이 만료되었습니다. 다시 로그인해주세요.',
+          ));
+        }
+        return Left(ServerFailure(message: e.message));
+      }
+      return Left(ServerFailure(message: '토큰 갱신 중 오류가 발생했습니다.'));
+    }
+  }
+}

lib/data/models/auth/auth_user.dart

@@ -0,0 +1,18 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'auth_user.freezed.dart';
+part 'auth_user.g.dart';
+
+@freezed
+class AuthUser with _$AuthUser {
+  const factory AuthUser({
+    required int id,
+    required String email,
+    @JsonKey(name: 'first_name') required String firstName,
+    @JsonKey(name: 'last_name') required String lastName,
+    required String role,
+  }) = _AuthUser;
+
+  factory AuthUser.fromJson(Map<String, dynamic> json) =>
+      _$AuthUserFromJson(json);
+}

lib/data/models/auth/auth_user.freezed.dart

@@ -0,0 +1,256 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'auth_user.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+AuthUser _$AuthUserFromJson(Map<String, dynamic> json) {
+  return _AuthUser.fromJson(json);
+}
+
+/// @nodoc
+mixin _$AuthUser {
+  int get id => throw _privateConstructorUsedError;
+  String get email => throw _privateConstructorUsedError;
+  @JsonKey(name: 'first_name')
+  String get firstName => throw _privateConstructorUsedError;
+  @JsonKey(name: 'last_name')
+  String get lastName => throw _privateConstructorUsedError;
+  String get role => throw _privateConstructorUsedError;
+
+  /// Serializes this AuthUser to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of AuthUser
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $AuthUserCopyWith<AuthUser> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $AuthUserCopyWith<$Res> {
+  factory $AuthUserCopyWith(AuthUser value, $Res Function(AuthUser) then) =
+      _$AuthUserCopyWithImpl<$Res, AuthUser>;
+  @useResult
+  $Res call(
+      {int id,
+      String email,
+      @JsonKey(name: 'first_name') String firstName,
+      @JsonKey(name: 'last_name') String lastName,
+      String role});
+}
+
+/// @nodoc
+class _$AuthUserCopyWithImpl<$Res, $Val extends AuthUser>
+    implements $AuthUserCopyWith<$Res> {
+  _$AuthUserCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of AuthUser
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? email = null,
+    Object? firstName = null,
+    Object? lastName = null,
+    Object? role = null,
+  }) {
+    return _then(_value.copyWith(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      email: null == email
+          ? _value.email
+          : email // ignore: cast_nullable_to_non_nullable
+              as String,
+      firstName: null == firstName
+          ? _value.firstName
+          : firstName // ignore: cast_nullable_to_non_nullable
+              as String,
+      lastName: null == lastName
+          ? _value.lastName
+          : lastName // ignore: cast_nullable_to_non_nullable
+              as String,
+      role: null == role
+          ? _value.role
+          : role // ignore: cast_nullable_to_non_nullable
+              as String,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$AuthUserImplCopyWith<$Res>
+    implements $AuthUserCopyWith<$Res> {
+  factory _$$AuthUserImplCopyWith(
+          _$AuthUserImpl value, $Res Function(_$AuthUserImpl) then) =
+      __$$AuthUserImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call(
+      {int id,
+      String email,
+      @JsonKey(name: 'first_name') String firstName,
+      @JsonKey(name: 'last_name') String lastName,
+      String role});
+}
+
+/// @nodoc
+class __$$AuthUserImplCopyWithImpl<$Res>
+    extends _$AuthUserCopyWithImpl<$Res, _$AuthUserImpl>
+    implements _$$AuthUserImplCopyWith<$Res> {
+  __$$AuthUserImplCopyWithImpl(
+      _$AuthUserImpl _value, $Res Function(_$AuthUserImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of AuthUser
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? email = null,
+    Object? firstName = null,
+    Object? lastName = null,
+    Object? role = null,
+  }) {
+    return _then(_$AuthUserImpl(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      email: null == email
+          ? _value.email
+          : email // ignore: cast_nullable_to_non_nullable
+              as String,
+      firstName: null == firstName
+          ? _value.firstName
+          : firstName // ignore: cast_nullable_to_non_nullable
+              as String,
+      lastName: null == lastName
+          ? _value.lastName
+          : lastName // ignore: cast_nullable_to_non_nullable
+              as String,
+      role: null == role
+          ? _value.role
+          : role // ignore: cast_nullable_to_non_nullable
+              as String,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$AuthUserImpl implements _AuthUser {
+  const _$AuthUserImpl(
+      {required this.id,
+      required this.email,
+      @JsonKey(name: 'first_name') required this.firstName,
+      @JsonKey(name: 'last_name') required this.lastName,
+      required this.role});
+
+  factory _$AuthUserImpl.fromJson(Map<String, dynamic> json) =>
+      _$$AuthUserImplFromJson(json);
+
+  @override
+  final int id;
+  @override
+  final String email;
+  @override
+  @JsonKey(name: 'first_name')
+  final String firstName;
+  @override
+  @JsonKey(name: 'last_name')
+  final String lastName;
+  @override
+  final String role;
+
+  @override
+  String toString() {
+    return 'AuthUser(id: $id, email: $email, firstName: $firstName, lastName: $lastName, role: $role)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$AuthUserImpl &&
+            (identical(other.id, id) || other.id == id) &&
+            (identical(other.email, email) || other.email == email) &&
+            (identical(other.firstName, firstName) ||
+                other.firstName == firstName) &&
+            (identical(other.lastName, lastName) ||
+                other.lastName == lastName) &&
+            (identical(other.role, role) || other.role == role));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode =>
+      Object.hash(runtimeType, id, email, firstName, lastName, role);
+
+  /// Create a copy of AuthUser
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$AuthUserImplCopyWith<_$AuthUserImpl> get copyWith =>
+      __$$AuthUserImplCopyWithImpl<_$AuthUserImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$AuthUserImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _AuthUser implements AuthUser {
+  const factory _AuthUser(
+      {required final int id,
+      required final String email,
+      @JsonKey(name: 'first_name') required final String firstName,
+      @JsonKey(name: 'last_name') required final String lastName,
+      required final String role}) = _$AuthUserImpl;
+
+  factory _AuthUser.fromJson(Map<String, dynamic> json) =
+      _$AuthUserImpl.fromJson;
+
+  @override
+  int get id;
+  @override
+  String get email;
+  @override
+  @JsonKey(name: 'first_name')
+  String get firstName;
+  @override
+  @JsonKey(name: 'last_name')
+  String get lastName;
+  @override
+  String get role;
+
+  /// Create a copy of AuthUser
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$AuthUserImplCopyWith<_$AuthUserImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/data/models/auth/auth_user.g.dart

@@ -0,0 +1,25 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'auth_user.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$AuthUserImpl _$$AuthUserImplFromJson(Map<String, dynamic> json) =>
+    _$AuthUserImpl(
+      id: (json['id'] as num).toInt(),
+      email: json['email'] as String,
+      firstName: json['first_name'] as String,
+      lastName: json['last_name'] as String,
+      role: json['role'] as String,
+    );
+
+Map<String, dynamic> _$$AuthUserImplToJson(_$AuthUserImpl instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'email': instance.email,
+      'first_name': instance.firstName,
+      'last_name': instance.lastName,
+      'role': instance.role,
+    };

lib/data/models/auth/login_request.dart

@@ -0,0 +1,15 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'login_request.freezed.dart';
+part 'login_request.g.dart';
+
+@freezed
+class LoginRequest with _$LoginRequest {
+  const factory LoginRequest({
+    required String email,
+    required String password,
+  }) = _LoginRequest;
+
+  factory LoginRequest.fromJson(Map<String, dynamic> json) =>
+      _$LoginRequestFromJson(json);
+}

lib/data/models/auth/login_request.freezed.dart

@@ -0,0 +1,183 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'login_request.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+LoginRequest _$LoginRequestFromJson(Map<String, dynamic> json) {
+  return _LoginRequest.fromJson(json);
+}
+
+/// @nodoc
+mixin _$LoginRequest {
+  String get email => throw _privateConstructorUsedError;
+  String get password => throw _privateConstructorUsedError;
+
+  /// Serializes this LoginRequest to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of LoginRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $LoginRequestCopyWith<LoginRequest> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $LoginRequestCopyWith<$Res> {
+  factory $LoginRequestCopyWith(
+          LoginRequest value, $Res Function(LoginRequest) then) =
+      _$LoginRequestCopyWithImpl<$Res, LoginRequest>;
+  @useResult
+  $Res call({String email, String password});
+}
+
+/// @nodoc
+class _$LoginRequestCopyWithImpl<$Res, $Val extends LoginRequest>
+    implements $LoginRequestCopyWith<$Res> {
+  _$LoginRequestCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of LoginRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? email = null,
+    Object? password = null,
+  }) {
+    return _then(_value.copyWith(
+      email: null == email
+          ? _value.email
+          : email // ignore: cast_nullable_to_non_nullable
+              as String,
+      password: null == password
+          ? _value.password
+          : password // ignore: cast_nullable_to_non_nullable
+              as String,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$LoginRequestImplCopyWith<$Res>
+    implements $LoginRequestCopyWith<$Res> {
+  factory _$$LoginRequestImplCopyWith(
+          _$LoginRequestImpl value, $Res Function(_$LoginRequestImpl) then) =
+      __$$LoginRequestImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({String email, String password});
+}
+
+/// @nodoc
+class __$$LoginRequestImplCopyWithImpl<$Res>
+    extends _$LoginRequestCopyWithImpl<$Res, _$LoginRequestImpl>
+    implements _$$LoginRequestImplCopyWith<$Res> {
+  __$$LoginRequestImplCopyWithImpl(
+      _$LoginRequestImpl _value, $Res Function(_$LoginRequestImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of LoginRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? email = null,
+    Object? password = null,
+  }) {
+    return _then(_$LoginRequestImpl(
+      email: null == email
+          ? _value.email
+          : email // ignore: cast_nullable_to_non_nullable
+              as String,
+      password: null == password
+          ? _value.password
+          : password // ignore: cast_nullable_to_non_nullable
+              as String,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$LoginRequestImpl implements _LoginRequest {
+  const _$LoginRequestImpl({required this.email, required this.password});
+
+  factory _$LoginRequestImpl.fromJson(Map<String, dynamic> json) =>
+      _$$LoginRequestImplFromJson(json);
+
+  @override
+  final String email;
+  @override
+  final String password;
+
+  @override
+  String toString() {
+    return 'LoginRequest(email: $email, password: $password)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$LoginRequestImpl &&
+            (identical(other.email, email) || other.email == email) &&
+            (identical(other.password, password) ||
+                other.password == password));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(runtimeType, email, password);
+
+  /// Create a copy of LoginRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$LoginRequestImplCopyWith<_$LoginRequestImpl> get copyWith =>
+      __$$LoginRequestImplCopyWithImpl<_$LoginRequestImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$LoginRequestImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _LoginRequest implements LoginRequest {
+  const factory _LoginRequest(
+      {required final String email,
+      required final String password}) = _$LoginRequestImpl;
+
+  factory _LoginRequest.fromJson(Map<String, dynamic> json) =
+      _$LoginRequestImpl.fromJson;
+
+  @override
+  String get email;
+  @override
+  String get password;
+
+  /// Create a copy of LoginRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$LoginRequestImplCopyWith<_$LoginRequestImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/data/models/auth/login_request.g.dart

@@ -0,0 +1,19 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'login_request.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$LoginRequestImpl _$$LoginRequestImplFromJson(Map<String, dynamic> json) =>
+    _$LoginRequestImpl(
+      email: json['email'] as String,
+      password: json['password'] as String,
+    );
+
+Map<String, dynamic> _$$LoginRequestImplToJson(_$LoginRequestImpl instance) =>
+    <String, dynamic>{
+      'email': instance.email,
+      'password': instance.password,
+    };

lib/data/models/auth/login_response.dart

@@ -0,0 +1,19 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'auth_user.dart';
+
+part 'login_response.freezed.dart';
+part 'login_response.g.dart';
+
+@freezed
+class LoginResponse with _$LoginResponse {
+  const factory LoginResponse({
+    @JsonKey(name: 'access_token') required String accessToken,
+    @JsonKey(name: 'refresh_token') required String refreshToken,
+    @JsonKey(name: 'token_type') required String tokenType,
+    @JsonKey(name: 'expires_in') required int expiresIn,
+    required AuthUser user,
+  }) = _LoginResponse;
+
+  factory LoginResponse.fromJson(Map<String, dynamic> json) =>
+      _$LoginResponseFromJson(json);
+}

lib/data/models/auth/login_response.freezed.dart

@@ -0,0 +1,280 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'login_response.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+LoginResponse _$LoginResponseFromJson(Map<String, dynamic> json) {
+  return _LoginResponse.fromJson(json);
+}
+
+/// @nodoc
+mixin _$LoginResponse {
+  @JsonKey(name: 'access_token')
+  String get accessToken => throw _privateConstructorUsedError;
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken => throw _privateConstructorUsedError;
+  @JsonKey(name: 'token_type')
+  String get tokenType => throw _privateConstructorUsedError;
+  @JsonKey(name: 'expires_in')
+  int get expiresIn => throw _privateConstructorUsedError;
+  AuthUser get user => throw _privateConstructorUsedError;
+
+  /// Serializes this LoginResponse to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of LoginResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $LoginResponseCopyWith<LoginResponse> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $LoginResponseCopyWith<$Res> {
+  factory $LoginResponseCopyWith(
+          LoginResponse value, $Res Function(LoginResponse) then) =
+      _$LoginResponseCopyWithImpl<$Res, LoginResponse>;
+  @useResult
+  $Res call(
+      {@JsonKey(name: 'access_token') String accessToken,
+      @JsonKey(name: 'refresh_token') String refreshToken,
+      @JsonKey(name: 'token_type') String tokenType,
+      @JsonKey(name: 'expires_in') int expiresIn,
+      AuthUser user});
+
+  $AuthUserCopyWith<$Res> get user;
+}
+
+/// @nodoc
+class _$LoginResponseCopyWithImpl<$Res, $Val extends LoginResponse>
+    implements $LoginResponseCopyWith<$Res> {
+  _$LoginResponseCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of LoginResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? accessToken = null,
+    Object? refreshToken = null,
+    Object? tokenType = null,
+    Object? expiresIn = null,
+    Object? user = null,
+  }) {
+    return _then(_value.copyWith(
+      accessToken: null == accessToken
+          ? _value.accessToken
+          : accessToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      tokenType: null == tokenType
+          ? _value.tokenType
+          : tokenType // ignore: cast_nullable_to_non_nullable
+              as String,
+      expiresIn: null == expiresIn
+          ? _value.expiresIn
+          : expiresIn // ignore: cast_nullable_to_non_nullable
+              as int,
+      user: null == user
+          ? _value.user
+          : user // ignore: cast_nullable_to_non_nullable
+              as AuthUser,
+    ) as $Val);
+  }
+
+  /// Create a copy of LoginResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @pragma('vm:prefer-inline')
+  $AuthUserCopyWith<$Res> get user {
+    return $AuthUserCopyWith<$Res>(_value.user, (value) {
+      return _then(_value.copyWith(user: value) as $Val);
+    });
+  }
+}
+
+/// @nodoc
+abstract class _$$LoginResponseImplCopyWith<$Res>
+    implements $LoginResponseCopyWith<$Res> {
+  factory _$$LoginResponseImplCopyWith(
+          _$LoginResponseImpl value, $Res Function(_$LoginResponseImpl) then) =
+      __$$LoginResponseImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call(
+      {@JsonKey(name: 'access_token') String accessToken,
+      @JsonKey(name: 'refresh_token') String refreshToken,
+      @JsonKey(name: 'token_type') String tokenType,
+      @JsonKey(name: 'expires_in') int expiresIn,
+      AuthUser user});
+
+  @override
+  $AuthUserCopyWith<$Res> get user;
+}
+
+/// @nodoc
+class __$$LoginResponseImplCopyWithImpl<$Res>
+    extends _$LoginResponseCopyWithImpl<$Res, _$LoginResponseImpl>
+    implements _$$LoginResponseImplCopyWith<$Res> {
+  __$$LoginResponseImplCopyWithImpl(
+      _$LoginResponseImpl _value, $Res Function(_$LoginResponseImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of LoginResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? accessToken = null,
+    Object? refreshToken = null,
+    Object? tokenType = null,
+    Object? expiresIn = null,
+    Object? user = null,
+  }) {
+    return _then(_$LoginResponseImpl(
+      accessToken: null == accessToken
+          ? _value.accessToken
+          : accessToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      tokenType: null == tokenType
+          ? _value.tokenType
+          : tokenType // ignore: cast_nullable_to_non_nullable
+              as String,
+      expiresIn: null == expiresIn
+          ? _value.expiresIn
+          : expiresIn // ignore: cast_nullable_to_non_nullable
+              as int,
+      user: null == user
+          ? _value.user
+          : user // ignore: cast_nullable_to_non_nullable
+              as AuthUser,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$LoginResponseImpl implements _LoginResponse {
+  const _$LoginResponseImpl(
+      {@JsonKey(name: 'access_token') required this.accessToken,
+      @JsonKey(name: 'refresh_token') required this.refreshToken,
+      @JsonKey(name: 'token_type') required this.tokenType,
+      @JsonKey(name: 'expires_in') required this.expiresIn,
+      required this.user});
+
+  factory _$LoginResponseImpl.fromJson(Map<String, dynamic> json) =>
+      _$$LoginResponseImplFromJson(json);
+
+  @override
+  @JsonKey(name: 'access_token')
+  final String accessToken;
+  @override
+  @JsonKey(name: 'refresh_token')
+  final String refreshToken;
+  @override
+  @JsonKey(name: 'token_type')
+  final String tokenType;
+  @override
+  @JsonKey(name: 'expires_in')
+  final int expiresIn;
+  @override
+  final AuthUser user;
+
+  @override
+  String toString() {
+    return 'LoginResponse(accessToken: $accessToken, refreshToken: $refreshToken, tokenType: $tokenType, expiresIn: $expiresIn, user: $user)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$LoginResponseImpl &&
+            (identical(other.accessToken, accessToken) ||
+                other.accessToken == accessToken) &&
+            (identical(other.refreshToken, refreshToken) ||
+                other.refreshToken == refreshToken) &&
+            (identical(other.tokenType, tokenType) ||
+                other.tokenType == tokenType) &&
+            (identical(other.expiresIn, expiresIn) ||
+                other.expiresIn == expiresIn) &&
+            (identical(other.user, user) || other.user == user));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(
+      runtimeType, accessToken, refreshToken, tokenType, expiresIn, user);
+
+  /// Create a copy of LoginResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$LoginResponseImplCopyWith<_$LoginResponseImpl> get copyWith =>
+      __$$LoginResponseImplCopyWithImpl<_$LoginResponseImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$LoginResponseImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _LoginResponse implements LoginResponse {
+  const factory _LoginResponse(
+      {@JsonKey(name: 'access_token') required final String accessToken,
+      @JsonKey(name: 'refresh_token') required final String refreshToken,
+      @JsonKey(name: 'token_type') required final String tokenType,
+      @JsonKey(name: 'expires_in') required final int expiresIn,
+      required final AuthUser user}) = _$LoginResponseImpl;
+
+  factory _LoginResponse.fromJson(Map<String, dynamic> json) =
+      _$LoginResponseImpl.fromJson;
+
+  @override
+  @JsonKey(name: 'access_token')
+  String get accessToken;
+  @override
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken;
+  @override
+  @JsonKey(name: 'token_type')
+  String get tokenType;
+  @override
+  @JsonKey(name: 'expires_in')
+  int get expiresIn;
+  @override
+  AuthUser get user;
+
+  /// Create a copy of LoginResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$LoginResponseImplCopyWith<_$LoginResponseImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/data/models/auth/login_response.g.dart

@@ -0,0 +1,25 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'login_response.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$LoginResponseImpl _$$LoginResponseImplFromJson(Map<String, dynamic> json) =>
+    _$LoginResponseImpl(
+      accessToken: json['access_token'] as String,
+      refreshToken: json['refresh_token'] as String,
+      tokenType: json['token_type'] as String,
+      expiresIn: (json['expires_in'] as num).toInt(),
+      user: AuthUser.fromJson(json['user'] as Map<String, dynamic>),
+    );
+
+Map<String, dynamic> _$$LoginResponseImplToJson(_$LoginResponseImpl instance) =>
+    <String, dynamic>{
+      'access_token': instance.accessToken,
+      'refresh_token': instance.refreshToken,
+      'token_type': instance.tokenType,
+      'expires_in': instance.expiresIn,
+      'user': instance.user,
+    };

lib/data/models/auth/logout_request.dart

@@ -0,0 +1,14 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'logout_request.freezed.dart';
+part 'logout_request.g.dart';
+
+@freezed
+class LogoutRequest with _$LogoutRequest {
+  const factory LogoutRequest({
+    @JsonKey(name: 'refresh_token') required String refreshToken,
+  }) = _LogoutRequest;
+
+  factory LogoutRequest.fromJson(Map<String, dynamic> json) =>
+      _$LogoutRequestFromJson(json);
+}

lib/data/models/auth/logout_request.freezed.dart

@@ -0,0 +1,171 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'logout_request.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+LogoutRequest _$LogoutRequestFromJson(Map<String, dynamic> json) {
+  return _LogoutRequest.fromJson(json);
+}
+
+/// @nodoc
+mixin _$LogoutRequest {
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken => throw _privateConstructorUsedError;
+
+  /// Serializes this LogoutRequest to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of LogoutRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $LogoutRequestCopyWith<LogoutRequest> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $LogoutRequestCopyWith<$Res> {
+  factory $LogoutRequestCopyWith(
+          LogoutRequest value, $Res Function(LogoutRequest) then) =
+      _$LogoutRequestCopyWithImpl<$Res, LogoutRequest>;
+  @useResult
+  $Res call({@JsonKey(name: 'refresh_token') String refreshToken});
+}
+
+/// @nodoc
+class _$LogoutRequestCopyWithImpl<$Res, $Val extends LogoutRequest>
+    implements $LogoutRequestCopyWith<$Res> {
+  _$LogoutRequestCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of LogoutRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? refreshToken = null,
+  }) {
+    return _then(_value.copyWith(
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$LogoutRequestImplCopyWith<$Res>
+    implements $LogoutRequestCopyWith<$Res> {
+  factory _$$LogoutRequestImplCopyWith(
+          _$LogoutRequestImpl value, $Res Function(_$LogoutRequestImpl) then) =
+      __$$LogoutRequestImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({@JsonKey(name: 'refresh_token') String refreshToken});
+}
+
+/// @nodoc
+class __$$LogoutRequestImplCopyWithImpl<$Res>
+    extends _$LogoutRequestCopyWithImpl<$Res, _$LogoutRequestImpl>
+    implements _$$LogoutRequestImplCopyWith<$Res> {
+  __$$LogoutRequestImplCopyWithImpl(
+      _$LogoutRequestImpl _value, $Res Function(_$LogoutRequestImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of LogoutRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? refreshToken = null,
+  }) {
+    return _then(_$LogoutRequestImpl(
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$LogoutRequestImpl implements _LogoutRequest {
+  const _$LogoutRequestImpl(
+      {@JsonKey(name: 'refresh_token') required this.refreshToken});
+
+  factory _$LogoutRequestImpl.fromJson(Map<String, dynamic> json) =>
+      _$$LogoutRequestImplFromJson(json);
+
+  @override
+  @JsonKey(name: 'refresh_token')
+  final String refreshToken;
+
+  @override
+  String toString() {
+    return 'LogoutRequest(refreshToken: $refreshToken)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$LogoutRequestImpl &&
+            (identical(other.refreshToken, refreshToken) ||
+                other.refreshToken == refreshToken));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(runtimeType, refreshToken);
+
+  /// Create a copy of LogoutRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$LogoutRequestImplCopyWith<_$LogoutRequestImpl> get copyWith =>
+      __$$LogoutRequestImplCopyWithImpl<_$LogoutRequestImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$LogoutRequestImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _LogoutRequest implements LogoutRequest {
+  const factory _LogoutRequest(
+      {@JsonKey(name: 'refresh_token')
+      required final String refreshToken}) = _$LogoutRequestImpl;
+
+  factory _LogoutRequest.fromJson(Map<String, dynamic> json) =
+      _$LogoutRequestImpl.fromJson;
+
+  @override
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken;
+
+  /// Create a copy of LogoutRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$LogoutRequestImplCopyWith<_$LogoutRequestImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/data/models/auth/logout_request.g.dart

@@ -0,0 +1,17 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'logout_request.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$LogoutRequestImpl _$$LogoutRequestImplFromJson(Map<String, dynamic> json) =>
+    _$LogoutRequestImpl(
+      refreshToken: json['refresh_token'] as String,
+    );
+
+Map<String, dynamic> _$$LogoutRequestImplToJson(_$LogoutRequestImpl instance) =>
+    <String, dynamic>{
+      'refresh_token': instance.refreshToken,
+    };

lib/data/models/auth/refresh_token_request.dart

@@ -0,0 +1,14 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'refresh_token_request.freezed.dart';
+part 'refresh_token_request.g.dart';
+
+@freezed
+class RefreshTokenRequest with _$RefreshTokenRequest {
+  const factory RefreshTokenRequest({
+    @JsonKey(name: 'refresh_token') required String refreshToken,
+  }) = _RefreshTokenRequest;
+
+  factory RefreshTokenRequest.fromJson(Map<String, dynamic> json) =>
+      _$RefreshTokenRequestFromJson(json);
+}

lib/data/models/auth/refresh_token_request.freezed.dart

@@ -0,0 +1,172 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'refresh_token_request.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+RefreshTokenRequest _$RefreshTokenRequestFromJson(Map<String, dynamic> json) {
+  return _RefreshTokenRequest.fromJson(json);
+}
+
+/// @nodoc
+mixin _$RefreshTokenRequest {
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken => throw _privateConstructorUsedError;
+
+  /// Serializes this RefreshTokenRequest to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of RefreshTokenRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $RefreshTokenRequestCopyWith<RefreshTokenRequest> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $RefreshTokenRequestCopyWith<$Res> {
+  factory $RefreshTokenRequestCopyWith(
+          RefreshTokenRequest value, $Res Function(RefreshTokenRequest) then) =
+      _$RefreshTokenRequestCopyWithImpl<$Res, RefreshTokenRequest>;
+  @useResult
+  $Res call({@JsonKey(name: 'refresh_token') String refreshToken});
+}
+
+/// @nodoc
+class _$RefreshTokenRequestCopyWithImpl<$Res, $Val extends RefreshTokenRequest>
+    implements $RefreshTokenRequestCopyWith<$Res> {
+  _$RefreshTokenRequestCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of RefreshTokenRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? refreshToken = null,
+  }) {
+    return _then(_value.copyWith(
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$RefreshTokenRequestImplCopyWith<$Res>
+    implements $RefreshTokenRequestCopyWith<$Res> {
+  factory _$$RefreshTokenRequestImplCopyWith(_$RefreshTokenRequestImpl value,
+          $Res Function(_$RefreshTokenRequestImpl) then) =
+      __$$RefreshTokenRequestImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({@JsonKey(name: 'refresh_token') String refreshToken});
+}
+
+/// @nodoc
+class __$$RefreshTokenRequestImplCopyWithImpl<$Res>
+    extends _$RefreshTokenRequestCopyWithImpl<$Res, _$RefreshTokenRequestImpl>
+    implements _$$RefreshTokenRequestImplCopyWith<$Res> {
+  __$$RefreshTokenRequestImplCopyWithImpl(_$RefreshTokenRequestImpl _value,
+      $Res Function(_$RefreshTokenRequestImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of RefreshTokenRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? refreshToken = null,
+  }) {
+    return _then(_$RefreshTokenRequestImpl(
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$RefreshTokenRequestImpl implements _RefreshTokenRequest {
+  const _$RefreshTokenRequestImpl(
+      {@JsonKey(name: 'refresh_token') required this.refreshToken});
+
+  factory _$RefreshTokenRequestImpl.fromJson(Map<String, dynamic> json) =>
+      _$$RefreshTokenRequestImplFromJson(json);
+
+  @override
+  @JsonKey(name: 'refresh_token')
+  final String refreshToken;
+
+  @override
+  String toString() {
+    return 'RefreshTokenRequest(refreshToken: $refreshToken)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$RefreshTokenRequestImpl &&
+            (identical(other.refreshToken, refreshToken) ||
+                other.refreshToken == refreshToken));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(runtimeType, refreshToken);
+
+  /// Create a copy of RefreshTokenRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$RefreshTokenRequestImplCopyWith<_$RefreshTokenRequestImpl> get copyWith =>
+      __$$RefreshTokenRequestImplCopyWithImpl<_$RefreshTokenRequestImpl>(
+          this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$RefreshTokenRequestImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _RefreshTokenRequest implements RefreshTokenRequest {
+  const factory _RefreshTokenRequest(
+      {@JsonKey(name: 'refresh_token')
+      required final String refreshToken}) = _$RefreshTokenRequestImpl;
+
+  factory _RefreshTokenRequest.fromJson(Map<String, dynamic> json) =
+      _$RefreshTokenRequestImpl.fromJson;
+
+  @override
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken;
+
+  /// Create a copy of RefreshTokenRequest
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$RefreshTokenRequestImplCopyWith<_$RefreshTokenRequestImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/data/models/auth/refresh_token_request.g.dart

@@ -0,0 +1,19 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'refresh_token_request.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$RefreshTokenRequestImpl _$$RefreshTokenRequestImplFromJson(
+        Map<String, dynamic> json) =>
+    _$RefreshTokenRequestImpl(
+      refreshToken: json['refresh_token'] as String,
+    );
+
+Map<String, dynamic> _$$RefreshTokenRequestImplToJson(
+        _$RefreshTokenRequestImpl instance) =>
+    <String, dynamic>{
+      'refresh_token': instance.refreshToken,
+    };

lib/data/models/auth/token_response.dart

@@ -0,0 +1,17 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'token_response.freezed.dart';
+part 'token_response.g.dart';
+
+@freezed
+class TokenResponse with _$TokenResponse {
+  const factory TokenResponse({
+    @JsonKey(name: 'access_token') required String accessToken,
+    @JsonKey(name: 'refresh_token') required String refreshToken,
+    @JsonKey(name: 'token_type') required String tokenType,
+    @JsonKey(name: 'expires_in') required int expiresIn,
+  }) = _TokenResponse;
+
+  factory TokenResponse.fromJson(Map<String, dynamic> json) =>
+      _$TokenResponseFromJson(json);
+}

lib/data/models/auth/token_response.freezed.dart

@@ -0,0 +1,246 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'token_response.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+TokenResponse _$TokenResponseFromJson(Map<String, dynamic> json) {
+  return _TokenResponse.fromJson(json);
+}
+
+/// @nodoc
+mixin _$TokenResponse {
+  @JsonKey(name: 'access_token')
+  String get accessToken => throw _privateConstructorUsedError;
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken => throw _privateConstructorUsedError;
+  @JsonKey(name: 'token_type')
+  String get tokenType => throw _privateConstructorUsedError;
+  @JsonKey(name: 'expires_in')
+  int get expiresIn => throw _privateConstructorUsedError;
+
+  /// Serializes this TokenResponse to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of TokenResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $TokenResponseCopyWith<TokenResponse> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $TokenResponseCopyWith<$Res> {
+  factory $TokenResponseCopyWith(
+          TokenResponse value, $Res Function(TokenResponse) then) =
+      _$TokenResponseCopyWithImpl<$Res, TokenResponse>;
+  @useResult
+  $Res call(
+      {@JsonKey(name: 'access_token') String accessToken,
+      @JsonKey(name: 'refresh_token') String refreshToken,
+      @JsonKey(name: 'token_type') String tokenType,
+      @JsonKey(name: 'expires_in') int expiresIn});
+}
+
+/// @nodoc
+class _$TokenResponseCopyWithImpl<$Res, $Val extends TokenResponse>
+    implements $TokenResponseCopyWith<$Res> {
+  _$TokenResponseCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of TokenResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? accessToken = null,
+    Object? refreshToken = null,
+    Object? tokenType = null,
+    Object? expiresIn = null,
+  }) {
+    return _then(_value.copyWith(
+      accessToken: null == accessToken
+          ? _value.accessToken
+          : accessToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      tokenType: null == tokenType
+          ? _value.tokenType
+          : tokenType // ignore: cast_nullable_to_non_nullable
+              as String,
+      expiresIn: null == expiresIn
+          ? _value.expiresIn
+          : expiresIn // ignore: cast_nullable_to_non_nullable
+              as int,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$TokenResponseImplCopyWith<$Res>
+    implements $TokenResponseCopyWith<$Res> {
+  factory _$$TokenResponseImplCopyWith(
+          _$TokenResponseImpl value, $Res Function(_$TokenResponseImpl) then) =
+      __$$TokenResponseImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call(
+      {@JsonKey(name: 'access_token') String accessToken,
+      @JsonKey(name: 'refresh_token') String refreshToken,
+      @JsonKey(name: 'token_type') String tokenType,
+      @JsonKey(name: 'expires_in') int expiresIn});
+}
+
+/// @nodoc
+class __$$TokenResponseImplCopyWithImpl<$Res>
+    extends _$TokenResponseCopyWithImpl<$Res, _$TokenResponseImpl>
+    implements _$$TokenResponseImplCopyWith<$Res> {
+  __$$TokenResponseImplCopyWithImpl(
+      _$TokenResponseImpl _value, $Res Function(_$TokenResponseImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of TokenResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? accessToken = null,
+    Object? refreshToken = null,
+    Object? tokenType = null,
+    Object? expiresIn = null,
+  }) {
+    return _then(_$TokenResponseImpl(
+      accessToken: null == accessToken
+          ? _value.accessToken
+          : accessToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      refreshToken: null == refreshToken
+          ? _value.refreshToken
+          : refreshToken // ignore: cast_nullable_to_non_nullable
+              as String,
+      tokenType: null == tokenType
+          ? _value.tokenType
+          : tokenType // ignore: cast_nullable_to_non_nullable
+              as String,
+      expiresIn: null == expiresIn
+          ? _value.expiresIn
+          : expiresIn // ignore: cast_nullable_to_non_nullable
+              as int,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$TokenResponseImpl implements _TokenResponse {
+  const _$TokenResponseImpl(
+      {@JsonKey(name: 'access_token') required this.accessToken,
+      @JsonKey(name: 'refresh_token') required this.refreshToken,
+      @JsonKey(name: 'token_type') required this.tokenType,
+      @JsonKey(name: 'expires_in') required this.expiresIn});
+
+  factory _$TokenResponseImpl.fromJson(Map<String, dynamic> json) =>
+      _$$TokenResponseImplFromJson(json);
+
+  @override
+  @JsonKey(name: 'access_token')
+  final String accessToken;
+  @override
+  @JsonKey(name: 'refresh_token')
+  final String refreshToken;
+  @override
+  @JsonKey(name: 'token_type')
+  final String tokenType;
+  @override
+  @JsonKey(name: 'expires_in')
+  final int expiresIn;
+
+  @override
+  String toString() {
+    return 'TokenResponse(accessToken: $accessToken, refreshToken: $refreshToken, tokenType: $tokenType, expiresIn: $expiresIn)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$TokenResponseImpl &&
+            (identical(other.accessToken, accessToken) ||
+                other.accessToken == accessToken) &&
+            (identical(other.refreshToken, refreshToken) ||
+                other.refreshToken == refreshToken) &&
+            (identical(other.tokenType, tokenType) ||
+                other.tokenType == tokenType) &&
+            (identical(other.expiresIn, expiresIn) ||
+                other.expiresIn == expiresIn));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode =>
+      Object.hash(runtimeType, accessToken, refreshToken, tokenType, expiresIn);
+
+  /// Create a copy of TokenResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$TokenResponseImplCopyWith<_$TokenResponseImpl> get copyWith =>
+      __$$TokenResponseImplCopyWithImpl<_$TokenResponseImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$TokenResponseImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _TokenResponse implements TokenResponse {
+  const factory _TokenResponse(
+          {@JsonKey(name: 'access_token') required final String accessToken,
+          @JsonKey(name: 'refresh_token') required final String refreshToken,
+          @JsonKey(name: 'token_type') required final String tokenType,
+          @JsonKey(name: 'expires_in') required final int expiresIn}) =
+      _$TokenResponseImpl;
+
+  factory _TokenResponse.fromJson(Map<String, dynamic> json) =
+      _$TokenResponseImpl.fromJson;
+
+  @override
+  @JsonKey(name: 'access_token')
+  String get accessToken;
+  @override
+  @JsonKey(name: 'refresh_token')
+  String get refreshToken;
+  @override
+  @JsonKey(name: 'token_type')
+  String get tokenType;
+  @override
+  @JsonKey(name: 'expires_in')
+  int get expiresIn;
+
+  /// Create a copy of TokenResponse
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$TokenResponseImplCopyWith<_$TokenResponseImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/data/models/auth/token_response.g.dart

@@ -0,0 +1,23 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'token_response.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$TokenResponseImpl _$$TokenResponseImplFromJson(Map<String, dynamic> json) =>
+    _$TokenResponseImpl(
+      accessToken: json['access_token'] as String,
+      refreshToken: json['refresh_token'] as String,
+      tokenType: json['token_type'] as String,
+      expiresIn: (json['expires_in'] as num).toInt(),
+    );
+
+Map<String, dynamic> _$$TokenResponseImplToJson(_$TokenResponseImpl instance) =>
+    <String, dynamic>{
+      'access_token': instance.accessToken,
+      'refresh_token': instance.refreshToken,
+      'token_type': instance.tokenType,
+      'expires_in': instance.expiresIn,
+    };

lib/di/injection_container.dart

@@ -3,6 +3,8 @@ import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:get_it/get_it.dart';
 import '../core/config/environment.dart';
 import '../data/datasources/remote/api_client.dart';
+import '../data/datasources/remote/auth_remote_datasource.dart';
+import '../services/auth_service.dart';
 
 /// GetIt 인스턴스
 final getIt = GetIt.instance;
@@ -20,7 +22,14 @@ Future<void> setupDependencies() async {
   getIt.registerLazySingleton(() => ApiClient());
   
   // 데이터소스
-  // TODO: Remote datasources will be registered here
+  getIt.registerLazySingleton<AuthRemoteDataSource>(
+    () => AuthRemoteDataSourceImpl(getIt()),
+  );
+  
+  // 서비스
+  getIt.registerLazySingleton<AuthService>(
+    () => AuthServiceImpl(getIt(), getIt()),
+  );
   
   // 리포지토리
   // TODO: Repositories will be registered here

lib/screens/login/controllers/login_controller.dart

@@ -1,7 +1,12 @@
 import 'package:flutter/material.dart';
+import 'package:superport/core/errors/failures.dart';
+import 'package:superport/data/models/auth/login_request.dart';
+import 'package:superport/di/injection_container.dart';
+import 'package:superport/services/auth_service.dart';
 
 /// 로그인 화면의 상태 및 비즈니스 로직을 담당하는 ChangeNotifier 기반 컨트롤러
 class LoginController extends ChangeNotifier {
+  final AuthService _authService = inject<AuthService>();
   /// 아이디 입력 컨트롤러
   final TextEditingController idController = TextEditingController();
 
@@ -16,6 +21,14 @@ class LoginController extends ChangeNotifier {
 
   /// 아이디 저장 여부
   bool saveId = false;
+  
+  /// 로딩 상태
+  bool _isLoading = false;
+  bool get isLoading => _isLoading;
+  
+  /// 에러 메시지
+  String? _errorMessage;
+  String? get errorMessage => _errorMessage;
 
   /// 아이디 저장 체크박스 상태 변경
   void setSaveId(bool value) {
@@ -23,11 +36,68 @@ class LoginController extends ChangeNotifier {
     notifyListeners();
   }
 
-  /// 로그인 처리 (샘플)
-  bool login() {
-    // 실제 인증 로직은 구현하지 않음
-    // 항상 true 반환 (샘플)
-    return true;
+  /// 로그인 처리
+  Future<bool> login() async {
+    // 입력값 검증
+    if (idController.text.trim().isEmpty) {
+      _errorMessage = '이메일을 입력해주세요.';
+      notifyListeners();
+      return false;
+    }
+    
+    if (pwController.text.isEmpty) {
+      _errorMessage = '비밀번호를 입력해주세요.';
+      notifyListeners();
+      return false;
+    }
+    
+    // 이메일 형식 검증
+    final emailRegex = RegExp(r'^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$');
+    if (!emailRegex.hasMatch(idController.text.trim())) {
+      _errorMessage = '올바른 이메일 형식이 아닙니다.';
+      notifyListeners();
+      return false;
+    }
+    
+    // 로딩 시작
+    _isLoading = true;
+    _errorMessage = null;
+    notifyListeners();
+    
+    try {
+      // 로그인 요청
+      final request = LoginRequest(
+        email: idController.text.trim(),
+        password: pwController.text,
+      );
+      
+      final result = await _authService.login(request);
+      
+      return result.fold(
+        (failure) {
+          _errorMessage = failure.message;
+          _isLoading = false;
+          notifyListeners();
+          return false;
+        },
+        (loginResponse) {
+          _isLoading = false;
+          notifyListeners();
+          return true;
+        },
+      );
+    } catch (e) {
+      _errorMessage = '로그인 중 오류가 발생했습니다.';
+      _isLoading = false;
+      notifyListeners();
+      return false;
+    }
+  }
+  
+  /// 에러 메시지 초기화
+  void clearError() {
+    _errorMessage = null;
+    notifyListeners();
   }
 
   @override

lib/screens/login/widgets/login_view_redesign.dart

@@ -27,10 +27,7 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
   late AnimationController _slideController;
   late Animation<Offset> _slideAnimation;
 
-  final _usernameController = TextEditingController();
-  final _passwordController = TextEditingController();
   bool _rememberMe = false;
-  bool _isLoading = false;
 
   @override
   void initState() {
@@ -66,39 +63,23 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
   void dispose() {
     _fadeController.dispose();
     _slideController.dispose();
-    _usernameController.dispose();
-    _passwordController.dispose();
     super.dispose();
   }
 
   Future<void> _handleLogin() async {
-    if (_usernameController.text.isEmpty || _passwordController.text.isEmpty) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(
-          content: Text('사용자명과 비밀번호를 입력해주세요.'),
-          backgroundColor: ShadcnTheme.destructive,
-        ),
-      );
-      return;
+    final success = await widget.controller.login();
+    if (success) {
+      widget.onLoginSuccess();
     }
-
-    setState(() {
-      _isLoading = true;
-    });
-
-    // 실제 로그인 로직 (임시로 2초 대기)
-    await Future.delayed(const Duration(seconds: 2));
-
-    setState(() {
-      _isLoading = false;
-    });
-
-    widget.onLoginSuccess();
   }
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
+    return ChangeNotifierProvider.value(
+      value: widget.controller,
+      child: Consumer<LoginController>(
+        builder: (context, controller, _) {
+          return Scaffold(
       backgroundColor: ShadcnTheme.background,
       body: SafeArea(
         child: Center(
@@ -128,6 +109,8 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
             ),
           ),
         ),
+      );
+        },
       ),
     );
   }
@@ -190,6 +173,7 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
   }
 
   Widget _buildLoginCard() {
+    final controller = context.watch<LoginController>();
     return ShadcnCard(
       padding: const EdgeInsets.all(ShadcnTheme.spacing8),
       child: Column(
@@ -210,7 +194,7 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
           ShadcnInput(
             label: '사용자명',
             placeholder: '사용자명을 입력하세요',
-            controller: _usernameController,
+            controller: controller.idController,
             prefixIcon: const Icon(Icons.person_outline),
             keyboardType: TextInputType.text,
           ),
@@ -220,7 +204,7 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
           ShadcnInput(
             label: '비밀번호',
             placeholder: '비밀번호를 입력하세요',
-            controller: _passwordController,
+            controller: controller.pwController,
             prefixIcon: const Icon(Icons.lock_outline),
             obscureText: true,
             keyboardType: TextInputType.visiblePassword,
@@ -231,11 +215,9 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
           Row(
             children: [
               Checkbox(
-                value: _rememberMe,
+                value: controller.saveId,
                 onChanged: (value) {
-                  setState(() {
-                    _rememberMe = value ?? false;
-                  });
+                  controller.setSaveId(value ?? false);
                 },
                 activeColor: ShadcnTheme.primary,
               ),
@@ -244,6 +226,38 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
             ],
           ),
           const SizedBox(height: ShadcnTheme.spacing8),
+          
+          // 에러 메시지 표시
+          if (controller.errorMessage != null)
+            Container(
+              padding: const EdgeInsets.all(ShadcnTheme.spacing3),
+              margin: const EdgeInsets.only(bottom: ShadcnTheme.spacing4),
+              decoration: BoxDecoration(
+                color: ShadcnTheme.destructive.withOpacity(0.1),
+                borderRadius: BorderRadius.circular(ShadcnTheme.borderRadius),
+                border: Border.all(
+                  color: ShadcnTheme.destructive.withOpacity(0.3),
+                ),
+              ),
+              child: Row(
+                children: [
+                  Icon(
+                    Icons.error_outline,
+                    size: 20,
+                    color: ShadcnTheme.destructive,
+                  ),
+                  const SizedBox(width: ShadcnTheme.spacing2),
+                  Expanded(
+                    child: Text(
+                      controller.errorMessage!,
+                      style: ShadcnTheme.bodyMedium.copyWith(
+                        color: ShadcnTheme.destructive,
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
 
           // 로그인 버튼
           ShadcnButton(
@@ -253,7 +267,7 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
             textColor: Colors.white,
             size: ShadcnButtonSize.large,
             fullWidth: true,
-            loading: _isLoading,
+            loading: controller.isLoading,
           ),
           const SizedBox(height: ShadcnTheme.spacing4),
 
@@ -261,8 +275,8 @@ class _LoginViewRedesignState extends State<LoginViewRedesign>
           ShadcnButton(
             text: '테스트 로그인',
             onPressed: () {
-              _usernameController.text = 'admin';
-              _passwordController.text = 'password';
+              controller.idController.text = 'admin@example.com';
+              controller.pwController.text = 'admin123';
               _handleLogin();
             },
             variant: ShadcnButtonVariant.secondary,

lib/services/auth_service.dart

@@ -0,0 +1,221 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:dartz/dartz.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:injectable/injectable.dart';
+import 'package:superport/core/errors/failures.dart';
+import 'package:superport/data/datasources/remote/auth_remote_datasource.dart';
+import 'package:superport/data/models/auth/auth_user.dart';
+import 'package:superport/data/models/auth/login_request.dart';
+import 'package:superport/data/models/auth/login_response.dart';
+import 'package:superport/data/models/auth/logout_request.dart';
+import 'package:superport/data/models/auth/refresh_token_request.dart';
+import 'package:superport/data/models/auth/token_response.dart';
+
+abstract class AuthService {
+  Future<Either<Failure, LoginResponse>> login(LoginRequest request);
+  Future<Either<Failure, void>> logout();
+  Future<Either<Failure, TokenResponse>> refreshToken();
+  Future<bool> isLoggedIn();
+  Future<AuthUser?> getCurrentUser();
+  Future<String?> getAccessToken();
+  Future<String?> getRefreshToken();
+  Future<void> clearSession();
+  Stream<bool> get authStateChanges;
+}
+
+@LazySingleton(as: AuthService)
+class AuthServiceImpl implements AuthService {
+  final AuthRemoteDataSource _authRemoteDataSource;
+  final FlutterSecureStorage _secureStorage;
+  
+  static const String _accessTokenKey = 'access_token';
+  static const String _refreshTokenKey = 'refresh_token';
+  static const String _userKey = 'user';
+  static const String _tokenExpiryKey = 'token_expiry';
+  
+  final _authStateController = StreamController<bool>.broadcast();
+  
+  AuthServiceImpl(
+    this._authRemoteDataSource,
+    this._secureStorage,
+  );
+
+  @override
+  Future<Either<Failure, LoginResponse>> login(LoginRequest request) async {
+    try {
+      final result = await _authRemoteDataSource.login(request);
+      
+      return await result.fold(
+        (failure) async => Left(failure),
+        (loginResponse) async {
+          // 토큰 및 사용자 정보 저장
+          await _saveTokens(
+            loginResponse.accessToken,
+            loginResponse.refreshToken,
+            loginResponse.expiresIn,
+          );
+          await _saveUser(loginResponse.user);
+          
+          // 인증 상태 변경 알림
+          _authStateController.add(true);
+          
+          return Right(loginResponse);
+        },
+      );
+    } catch (e) {
+      return Left(ServerFailure(message: '로그인 처리 중 오류가 발생했습니다.'));
+    }
+  }
+
+  @override
+  Future<Either<Failure, void>> logout() async {
+    try {
+      final refreshToken = await getRefreshToken();
+      if (refreshToken != null) {
+        final request = LogoutRequest(refreshToken: refreshToken);
+        await _authRemoteDataSource.logout(request);
+      }
+      
+      await clearSession();
+      _authStateController.add(false);
+      
+      return const Right(null);
+    } catch (e) {
+      // 로그아웃 API 실패 시에도 로컬 세션은 정리
+      await clearSession();
+      _authStateController.add(false);
+      return const Right(null);
+    }
+  }
+
+  @override
+  Future<Either<Failure, TokenResponse>> refreshToken() async {
+    try {
+      final refreshToken = await getRefreshToken();
+      if (refreshToken == null) {
+        return Left(AuthenticationFailure(
+          message: '리프레시 토큰이 없습니다. 다시 로그인해주세요.',
+        ));
+      }
+      
+      final request = RefreshTokenRequest(refreshToken: refreshToken);
+      final result = await _authRemoteDataSource.refreshToken(request);
+      
+      return await result.fold(
+        (failure) async {
+          // 토큰 갱신 실패 시 세션 정리
+          await clearSession();
+          _authStateController.add(false);
+          return Left(failure);
+        },
+        (tokenResponse) async {
+          // 새 토큰 저장
+          await _saveTokens(
+            tokenResponse.accessToken,
+            tokenResponse.refreshToken,
+            tokenResponse.expiresIn,
+          );
+          return Right(tokenResponse);
+        },
+      );
+    } catch (e) {
+      return Left(ServerFailure(message: '토큰 갱신 중 오류가 발생했습니다.'));
+    }
+  }
+
+  @override
+  Future<bool> isLoggedIn() async {
+    try {
+      final accessToken = await getAccessToken();
+      if (accessToken == null) return false;
+      
+      // 토큰 만료 확인
+      final expiryStr = await _secureStorage.read(key: _tokenExpiryKey);
+      if (expiryStr != null) {
+        final expiry = DateTime.parse(expiryStr);
+        if (DateTime.now().isAfter(expiry)) {
+          // 토큰이 만료되었으면 갱신 시도
+          final refreshResult = await refreshToken();
+          return refreshResult.isRight();
+        }
+      }
+      
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+
+  @override
+  Future<AuthUser?> getCurrentUser() async {
+    try {
+      final userStr = await _secureStorage.read(key: _userKey);
+      if (userStr == null) return null;
+      
+      final userJson = jsonDecode(userStr);
+      return AuthUser.fromJson(userJson);
+    } catch (e) {
+      return null;
+    }
+  }
+
+  @override
+  Future<String?> getAccessToken() async {
+    try {
+      return await _secureStorage.read(key: _accessTokenKey);
+    } catch (e) {
+      return null;
+    }
+  }
+
+  @override
+  Future<String?> getRefreshToken() async {
+    try {
+      return await _secureStorage.read(key: _refreshTokenKey);
+    } catch (e) {
+      return null;
+    }
+  }
+
+  @override
+  Future<void> clearSession() async {
+    try {
+      await _secureStorage.delete(key: _accessTokenKey);
+      await _secureStorage.delete(key: _refreshTokenKey);
+      await _secureStorage.delete(key: _userKey);
+      await _secureStorage.delete(key: _tokenExpiryKey);
+    } catch (e) {
+      // 에러가 발생해도 계속 진행
+    }
+  }
+
+  @override
+  Stream<bool> get authStateChanges => _authStateController.stream;
+
+  Future<void> _saveTokens(
+    String accessToken,
+    String refreshToken,
+    int expiresIn,
+  ) async {
+    await _secureStorage.write(key: _accessTokenKey, value: accessToken);
+    await _secureStorage.write(key: _refreshTokenKey, value: refreshToken);
+    
+    // 토큰 만료 시간 저장 (현재 시간 + expiresIn 초)
+    final expiry = DateTime.now().add(Duration(seconds: expiresIn));
+    await _secureStorage.write(
+      key: _tokenExpiryKey,
+      value: expiry.toIso8601String(),
+    );
+  }
+
+  Future<void> _saveUser(AuthUser user) async {
+    final userJson = jsonEncode(user.toJson());
+    await _secureStorage.write(key: _userKey, value: userJson);
+  }
+
+  void dispose() {
+    _authStateController.close();
+  }
+}