diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index eed5d4c7..93eb43c7 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -41,9 +41,6 @@
             <option value="$PROJECT_DIR$/feature/example-questions" />
             <option value="$PROJECT_DIR$/feature/example-questions/api" />
             <option value="$PROJECT_DIR$/feature/example-questions/impl" />
-            <option value="$PROJECT_DIR$/feature/forgot-password" />
-            <option value="$PROJECT_DIR$/feature/forgot-password/api" />
-            <option value="$PROJECT_DIR$/feature/forgot-password/impl" />
             <option value="$PROJECT_DIR$/feature/public-collections" />
             <option value="$PROJECT_DIR$/feature/public-collections/api" />
             <option value="$PROJECT_DIR$/feature/public-collections/impl" />
diff --git a/core/network-api/build.gradle.kts b/core/network-api/build.gradle.kts
index 162a2039..fcc2d14d 100644
--- a/core/network-api/build.gradle.kts
+++ b/core/network-api/build.gradle.kts
@@ -32,7 +32,7 @@ android {
 }
 
 dependencies {
-
+    implementation(libs.gson)
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.appcompat)
     implementation(libs.material)
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/ApiService.kt b/core/network-api/src/main/java/ru/yeahub/network_api/ApiService.kt
index 8fecf80b..77378f55 100644
--- a/core/network-api/src/main/java/ru/yeahub/network_api/ApiService.kt
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/ApiService.kt
@@ -7,9 +7,21 @@ import ru.yeahub.network_api.models.GetSkillsResponse
 import ru.yeahub.network_api.models.GetSpecializationResponse
 import ru.yeahub.network_api.models.GetSpecializationsResponse
 import ru.yeahub.network_api.models.RegistrationRequestDto
+import ru.yeahub.network_api.models.AuthUserDto
+import ru.yeahub.network_api.models.LoginRequestDto
+import ru.yeahub.network_api.models.LoginResponseDto
 
 interface ApiService {
 
+    /**
+     * API авторизации:
+     * - login - выполняет вход по email и паролю
+     * - getProfile - получает профиль авторизованного пользователя
+     */
+    suspend fun login(request: LoginRequestDto): LoginResponseDto
+
+    suspend fun getProfile(): AuthUserDto
+
     suspend fun register(request: RegistrationRequestDto)
 
     suspend fun getQuestions(
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthPermissionDto.kt b/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthPermissionDto.kt
new file mode 100644
index 00000000..b27dc421
--- /dev/null
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthPermissionDto.kt
@@ -0,0 +1,11 @@
+package ru.yeahub.network_api.models
+
+/**
+ * DTO разрешения пользователя:
+ * - id - идентификатор разрешения
+ * - name - название разрешения
+ */
+data class AuthPermissionDto(
+    val id: Int,
+    val name: String,
+)
\ No newline at end of file
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthUserDto.kt b/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthUserDto.kt
new file mode 100644
index 00000000..7a7abaa5
--- /dev/null
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthUserDto.kt
@@ -0,0 +1,35 @@
+package ru.yeahub.network_api.models
+
+/**
+ * DTO пользователя из auth response:
+ * - id - идентификатор пользователя
+ * - username - имя пользователя
+ * - phone - телефон
+ * - email - email
+ * - country - страна
+ * - city - город
+ * - address - адрес
+ * - avatarUrl - ссылка на аватар
+ * - birthday - дата рождения
+ * - updatedAt - дата обновления
+ * - createdAt - дата создания
+ * - userRoles - роли пользователя
+ * - isVerified - подтверждён ли пользователь
+ * - isEmailNotificationsEnable - включены ли email-уведомления
+ */
+data class AuthUserDto(
+    val id: String?,
+    val username: String?,
+    val phone: String?,
+    val email: String?,
+    val country: String?,
+    val city: String?,
+    val address: String?,
+    val avatarUrl: String?,
+    val birthday: String?,
+    val updatedAt: String?,
+    val createdAt: String?,
+    val userRoles: List<AuthUserRoleDto>?,
+    val isVerified: Boolean?,
+    val isEmailNotificationsEnable: Boolean?,
+)
\ No newline at end of file
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthUserRoleDto.kt b/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthUserRoleDto.kt
new file mode 100644
index 00000000..5237652c
--- /dev/null
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/models/AuthUserRoleDto.kt
@@ -0,0 +1,13 @@
+package ru.yeahub.network_api.models
+
+/**
+ * DTO роли пользователя:
+ * - id - идентификатор роли
+ * - name - название роли
+ * - permissions - список разрешений роли
+ */
+data class AuthUserRoleDto(
+    val id: Int,
+    val name: String,
+    val permissions: List<AuthPermissionDto>,
+)
\ No newline at end of file
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/models/ErrorResponseDto.kt b/core/network-api/src/main/java/ru/yeahub/network_api/models/ErrorResponseDto.kt
new file mode 100644
index 00000000..4d3098e5
--- /dev/null
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/models/ErrorResponseDto.kt
@@ -0,0 +1,11 @@
+package ru.yeahub.network_api.models
+
+/**
+ * Response модель ошибки backend:
+ * - key - backend key ошибки
+ * - message - текстовое описание ошибки
+ */
+data class ErrorResponseDto(
+    val key: String?,
+    val message: String?,
+)
\ No newline at end of file
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/models/LoginRequestDto.kt b/core/network-api/src/main/java/ru/yeahub/network_api/models/LoginRequestDto.kt
new file mode 100644
index 00000000..ce66432f
--- /dev/null
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/models/LoginRequestDto.kt
@@ -0,0 +1,11 @@
+package ru.yeahub.network_api.models
+
+/**
+ * Request модель авторизации:
+ * - email - email пользователя
+ * - password - пароль пользователя
+ */
+data class LoginRequestDto(
+    val email: String,
+    val password: String,
+)
\ No newline at end of file
diff --git a/core/network-api/src/main/java/ru/yeahub/network_api/models/LoginResponseDto.kt b/core/network-api/src/main/java/ru/yeahub/network_api/models/LoginResponseDto.kt
new file mode 100644
index 00000000..2342f5b5
--- /dev/null
+++ b/core/network-api/src/main/java/ru/yeahub/network_api/models/LoginResponseDto.kt
@@ -0,0 +1,13 @@
+package ru.yeahub.network_api.models
+
+import com.google.gson.annotations.SerializedName
+/**
+ * Response модель авторизации:
+ * - accessToken - access token пользователя
+ * - user - данные пользователя
+ */
+data class LoginResponseDto(
+    @SerializedName("access_token")
+    val accessToken: String,
+    val user: AuthUserDto,
+)
\ No newline at end of file
diff --git a/feature/authentication/impl/build.gradle.kts b/feature/authentication/impl/build.gradle.kts
index f19c0873..3c03380e 100644
--- a/feature/authentication/impl/build.gradle.kts
+++ b/feature/authentication/impl/build.gradle.kts
@@ -75,6 +75,7 @@ dependencies {
 
     // Retrofit (for HttpException)
     implementation(libs.retrofit.core)
+    implementation(libs.gson)
 
     debugImplementation(libs.androidx.ui.tooling)
     debugImplementation(libs.androidx.ui.test.manifest)
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/mapper/LoginDomainToDataMapper.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/mapper/LoginDomainToDataMapper.kt
new file mode 100644
index 00000000..d4798c8b
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/mapper/LoginDomainToDataMapper.kt
@@ -0,0 +1,18 @@
+package ru.yeahub.authentication.impl.login.data.mapper
+
+import ru.yeahub.authentication.impl.login.domain.entity.LoginModel
+import ru.yeahub.network_api.models.LoginRequestDto
+
+/**
+ * Mapper domain модели авторизации в request модель backend:
+ * - LoginModel преобразует в LoginRequestDto
+ */
+class LoginDomainToDataMapper {
+
+    fun map(model: LoginModel): LoginRequestDto {
+        return LoginRequestDto(
+            email = model.email,
+            password = model.password,
+        )
+    }
+}
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/mapper/LoginResponseToDomainMapper.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/mapper/LoginResponseToDomainMapper.kt
new file mode 100644
index 00000000..0b009cbd
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/mapper/LoginResponseToDomainMapper.kt
@@ -0,0 +1,27 @@
+package ru.yeahub.authentication.impl.login.data.mapper
+
+import ru.yeahub.authentication.impl.login.domain.entity.AuthResult
+import ru.yeahub.authentication.impl.login.domain.entity.AuthTokens
+import ru.yeahub.authentication.impl.login.domain.entity.UserProfile
+import ru.yeahub.network_api.models.LoginResponseDto
+
+/**
+ * Mapper response модели авторизации в domain модель:
+ * - LoginResponseDto преобразует в AuthResult
+ */
+class LoginResponseToDomainMapper {
+
+    fun map(dto: LoginResponseDto): AuthResult {
+        return AuthResult(
+            tokens = AuthTokens(
+                accessToken = dto.accessToken,
+            ),
+            userProfile = UserProfile(
+                id = dto.user.id,
+                email = dto.user.email,
+                username = dto.user.username,
+                avatarUrl = dto.user.avatarUrl,
+            ),
+        )
+    }
+}
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/LoginRepositoryImpl.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/LoginRepositoryImpl.kt
new file mode 100644
index 00000000..bb34b6c4
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/LoginRepositoryImpl.kt
@@ -0,0 +1,121 @@
+package ru.yeahub.authentication.impl.login.data.repository
+
+import com.google.gson.Gson
+import kotlinx.coroutines.CancellationException
+import retrofit2.HttpException
+import ru.yeahub.authentication.impl.login.data.mapper.LoginDomainToDataMapper
+import ru.yeahub.authentication.impl.login.data.mapper.LoginResponseToDomainMapper
+import ru.yeahub.authentication.impl.login.data.repository.remote.LoginRemoteDataSourceApi
+import ru.yeahub.authentication.impl.login.domain.entity.AuthResult
+import ru.yeahub.authentication.impl.login.domain.entity.Failure
+import ru.yeahub.authentication.impl.login.domain.entity.LoginError
+import ru.yeahub.authentication.impl.login.domain.entity.LoginException
+import ru.yeahub.authentication.impl.login.domain.entity.LoginModel
+import ru.yeahub.authentication.impl.login.domain.repository.LoginRepositoryApi
+import ru.yeahub.network_api.models.ErrorResponseDto
+import java.io.IOException
+
+/**
+ * Реализация репозитория авторизации:
+ * - преобразует domain модель в DTO
+ * - вызывает remote data source
+ * - преобразует DTO в domain модель
+ * - маппит сетевые и backend ошибки в LoginException
+ */
+class LoginRepositoryImpl(
+    private val remoteDataSourceApi: LoginRemoteDataSourceApi,
+    private val domainToDataMapper: LoginDomainToDataMapper,
+    private val responseToDomainMapper: LoginResponseToDomainMapper,
+    private val gson: Gson,
+) : LoginRepositoryApi {
+
+    override suspend fun login(loginModel: LoginModel): AuthResult {
+        return try {
+            val request = domainToDataMapper.map(loginModel)
+            val response = remoteDataSourceApi.login(request)
+            responseToDomainMapper.map(response)
+        } catch (exception: CancellationException) {
+            throw exception
+        } catch (exception: IOException) {
+            throw LoginException(
+                error = LoginError.Network,
+                failure = Failure(cause = exception),
+            )
+        } catch (exception: HttpException) {
+            throw mapHttpException(exception)
+        }
+    }
+
+    /**
+     * Маппит HTTP-ошибку backend в domain ошибку авторизации:
+     * - сначала пытается прочитать backend key
+     * - если key неизвестен, использует HTTP status code
+     */
+    private fun mapHttpException(exception: HttpException): LoginException {
+        val code = exception.code()
+        val backendKey = exception.getBackendErrorKey()
+
+        val error = when (backendKey) {
+            BACKEND_KEY_INVALID_PASSWORD -> LoginError.InvalidPassword
+            BACKEND_KEY_INVALID_CREDENTIALS -> LoginError.InvalidCredentials
+            BACKEND_KEY_USER_NOT_FOUND -> LoginError.UserNotFound
+            BACKEND_KEY_ACCOUNT_BLOCKED -> LoginError.AccountBlocked
+            BACKEND_KEY_TOO_MANY_ATTEMPTS -> LoginError.TooManyAttempts
+            BACKEND_KEY_EMAIL_NOT_CONFIRMED -> LoginError.EmailNotConfirmed
+            else -> mapHttpCodeToError(code)
+        }
+
+        return LoginException(
+            error = error,
+            failure = Failure(
+                cause = exception,
+                httpCode = code,
+            ),
+        )
+    }
+
+    /**
+     * Маппит HTTP status code в domain ошибку авторизации:
+     * - используется как fallback, если backend key отсутствует или неизвестен
+     */
+    private fun mapHttpCodeToError(code: Int): LoginError {
+        return when (code) {
+            HTTP_BAD_REQUEST,
+            HTTP_UNAUTHORIZED -> LoginError.InvalidCredentials
+
+            HTTP_NOT_FOUND -> LoginError.UserNotFound
+
+            in HTTP_SERVER_ERROR_MIN..HTTP_SERVER_ERROR_MAX -> LoginError.Server
+
+            else -> LoginError.Unknown
+        }
+    }
+
+    /**
+     * Извлекает backend key из error body:
+     * - парсит ErrorResponseDto
+     * - возвращает null, если body пустой или формат неизвестен
+     */
+    private fun HttpException.getBackendErrorKey(): String? {
+        val errorBody = response()?.errorBody()?.string() ?: return null
+
+        return runCatching {
+            gson.fromJson(errorBody, ErrorResponseDto::class.java).key
+        }.getOrNull()
+    }
+
+    private companion object {
+        private const val HTTP_BAD_REQUEST = 400
+        private const val HTTP_UNAUTHORIZED = 401
+        private const val HTTP_NOT_FOUND = 404
+        private const val HTTP_SERVER_ERROR_MIN = 500
+        private const val HTTP_SERVER_ERROR_MAX = 599
+
+        private const val BACKEND_KEY_INVALID_PASSWORD = "auth.user.password.invalid"
+        private const val BACKEND_KEY_INVALID_CREDENTIALS = "auth.login.invalid_credentials"
+        private const val BACKEND_KEY_USER_NOT_FOUND = "user.user.id.not_found"
+        private const val BACKEND_KEY_ACCOUNT_BLOCKED = "user.user.status.blocked"
+        private const val BACKEND_KEY_TOO_MANY_ATTEMPTS = "auth.throttle.too_many_attempts"
+        private const val BACKEND_KEY_EMAIL_NOT_CONFIRMED = "auth.user.email.not_confirmed"
+    }
+}
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/remote/LoginRemoteDataSourceApi.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/remote/LoginRemoteDataSourceApi.kt
new file mode 100644
index 00000000..9cffad66
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/remote/LoginRemoteDataSourceApi.kt
@@ -0,0 +1,13 @@
+package ru.yeahub.authentication.impl.login.data.repository.remote
+
+import ru.yeahub.network_api.models.LoginRequestDto
+import ru.yeahub.network_api.models.LoginResponseDto
+
+/**
+ * Контракт remote data source авторизации:
+ * - login - выполняет сетевой запрос авторизации
+ */
+interface LoginRemoteDataSourceApi {
+
+    suspend fun login(request: LoginRequestDto): LoginResponseDto
+}
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/remote/LoginRemoteDataSourceImpl.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/remote/LoginRemoteDataSourceImpl.kt
new file mode 100644
index 00000000..528b9ac1
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/data/repository/remote/LoginRemoteDataSourceImpl.kt
@@ -0,0 +1,18 @@
+package ru.yeahub.authentication.impl.login.data.repository.remote
+
+import ru.yeahub.network_api.NetworkProvider
+import ru.yeahub.network_api.models.LoginRequestDto
+import ru.yeahub.network_api.models.LoginResponseDto
+
+/**
+ * Реализация remote data source авторизации:
+ * - вызывает методы apiService из NetworkProvider
+ */
+class LoginRemoteDataSourceImpl(
+    private val apiService: NetworkProvider,
+) : LoginRemoteDataSourceApi {
+
+    override suspend fun login(request: LoginRequestDto): LoginResponseDto {
+        return apiService.apiService.login(request)
+    }
+}
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/di/LoginFeatureModule.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/di/LoginFeatureModule.kt
new file mode 100644
index 00000000..61acadbe
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/di/LoginFeatureModule.kt
@@ -0,0 +1,45 @@
+package ru.yeahub.authentication.impl.login.di
+
+import com.google.gson.Gson
+import org.koin.androidx.viewmodel.dsl.viewModelOf
+import org.koin.core.module.dsl.bind
+import org.koin.core.module.dsl.factoryOf
+import org.koin.core.module.dsl.singleOf
+import org.koin.dsl.module
+import ru.yeahub.authentication.impl.login.data.mapper.LoginDomainToDataMapper
+import ru.yeahub.authentication.impl.login.data.mapper.LoginResponseToDomainMapper
+import ru.yeahub.authentication.impl.login.data.repository.remote.LoginRemoteDataSourceApi
+import ru.yeahub.authentication.impl.login.data.repository.LoginRepositoryImpl
+import ru.yeahub.authentication.impl.login.data.repository.remote.LoginRemoteDataSourceImpl
+import ru.yeahub.authentication.impl.login.domain.repository.LoginRepositoryApi
+import ru.yeahub.authentication.impl.login.domain.usecase.LoginUseCase
+import ru.yeahub.authentication.impl.login.presentation.mapper.LoginStateMapper
+import ru.yeahub.authentication.impl.login.presentation.viewmodel.LoginViewModel
+
+/**
+ * DI модуль авторизации:
+ * - регистрирует mapper'ы
+ * - регистрирует remote data source
+ * - регистрирует repository
+ * - регистрирует use case
+ * - регистрирует ViewModel
+ */
+val loginFeatureModule = module {
+    singleOf(::LoginDomainToDataMapper)
+    singleOf(::LoginResponseToDomainMapper)
+
+    singleOf(::Gson)
+
+    singleOf(::LoginRemoteDataSourceImpl) {
+        bind<LoginRemoteDataSourceApi>()
+    }
+
+    singleOf(::LoginRepositoryImpl) {
+        bind<LoginRepositoryApi>()
+    }
+
+    factoryOf(::LoginUseCase)
+
+    singleOf(::LoginStateMapper)
+    viewModelOf(::LoginViewModel)
+}
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/AuthResult.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/AuthResult.kt
new file mode 100644
index 00000000..24069f7c
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/AuthResult.kt
@@ -0,0 +1,11 @@
+package ru.yeahub.authentication.impl.login.domain.entity
+
+/**
+ * Результат успешной авторизации:
+ * - tokens - токены авторизации
+ * - userProfile - профиль авторизованного пользователя
+ */
+data class AuthResult(
+    val tokens: AuthTokens,
+    val userProfile: UserProfile,
+)
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/AuthTokens.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/AuthTokens.kt
new file mode 100644
index 00000000..130a7cf4
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/AuthTokens.kt
@@ -0,0 +1,9 @@
+package ru.yeahub.authentication.impl.login.domain.entity
+
+/**
+ * Токены авторизации:
+ * - accessToken - токен доступа для защищённых API-запросов
+ */
+data class AuthTokens(
+    val accessToken: String,
+)
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/LoginError.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/LoginError.kt
index 7b170012..f24bb38b 100644
--- a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/LoginError.kt
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/LoginError.kt
@@ -2,8 +2,12 @@ package ru.yeahub.authentication.impl.login.domain.entity
 
 /**
  * Бизнес-ошибки авторизации:
- * - InvalidCredentials - неверные логин/пароль
+ * - InvalidCredentials - неверные данные авторизации
+ * - InvalidPassword - неверный пароль
  * - UserNotFound - пользователь не найден
+ * - AccountBlocked - аккаунт заблокирован
+ * - TooManyAttempts - слишком много попыток входа
+ * - EmailNotConfirmed - email не подтверждён
  * - Network - ошибка сети
  * - Server - ошибка сервера
  * - Unknown - неизвестная ошибка
@@ -11,7 +15,11 @@ package ru.yeahub.authentication.impl.login.domain.entity
 sealed interface LoginError {
 
     data object InvalidCredentials : LoginError
+    data object InvalidPassword : LoginError
     data object UserNotFound : LoginError
+    data object AccountBlocked : LoginError
+    data object TooManyAttempts : LoginError
+    data object EmailNotConfirmed : LoginError
     data object Network : LoginError
     data object Server : LoginError
     data object Unknown : LoginError
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/UserProfile.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/UserProfile.kt
new file mode 100644
index 00000000..ed734e7e
--- /dev/null
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/entity/UserProfile.kt
@@ -0,0 +1,15 @@
+package ru.yeahub.authentication.impl.login.domain.entity
+
+/**
+ * Профиль авторизованного пользователя:
+ * - id - идентификатор пользователя
+ * - email - email пользователя
+ * - username - имя пользователя
+ * - avatarUrl - ссылка на аватар пользователя
+ */
+data class UserProfile(
+    val id: String?,
+    val email: String?,
+    val username: String?,
+    val avatarUrl: String?,
+)
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/repository/LoginRepositoryApi.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/repository/LoginRepositoryApi.kt
index 31f125a4..13025919 100644
--- a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/repository/LoginRepositoryApi.kt
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/repository/LoginRepositoryApi.kt
@@ -1,10 +1,12 @@
 package ru.yeahub.authentication.impl.login.domain.repository
 
+import ru.yeahub.authentication.impl.login.domain.entity.AuthResult
 import ru.yeahub.authentication.impl.login.domain.entity.LoginModel
 /**
  * Контракт репозитория авторизации:
  * - login - выполняет вход по email и паролю
  */
 interface LoginRepositoryApi {
-    suspend fun login(loginModel: LoginModel)
+
+    suspend fun login(loginModel: LoginModel): AuthResult
 }
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/usecase/LoginUseCase.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/usecase/LoginUseCase.kt
index 8eff7855..3af79955 100644
--- a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/usecase/LoginUseCase.kt
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/domain/usecase/LoginUseCase.kt
@@ -1,15 +1,18 @@
 package ru.yeahub.authentication.impl.login.domain.usecase
 
+import ru.yeahub.authentication.impl.login.domain.entity.AuthResult
 import ru.yeahub.authentication.impl.login.domain.entity.LoginModel
 import ru.yeahub.authentication.impl.login.domain.repository.LoginRepositoryApi
+
 /**
  * UseCase авторизации:
- * - login — запускает вход через репозиторий
+ * - login - запускает вход через репозиторий
  */
 class LoginUseCase(
-    private val repository: LoginRepositoryApi
+    private val repository: LoginRepositoryApi,
 ) {
-    suspend operator fun invoke(loginModel: LoginModel) {
-        repository.login(loginModel)
+
+    suspend operator fun invoke(loginModel: LoginModel): AuthResult {
+        return repository.login(loginModel)
     }
 }
\ No newline at end of file
diff --git a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/presentation/viewmodel/LoginViewModel.kt b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/presentation/viewmodel/LoginViewModel.kt
index d8f2f450..1cb80a6d 100644
--- a/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/presentation/viewmodel/LoginViewModel.kt
+++ b/feature/authentication/impl/src/main/java/ru/yeahub/authentication/impl/login/presentation/viewmodel/LoginViewModel.kt
@@ -21,6 +21,7 @@ import ru.yeahub.authentication.impl.login.presentation.model.LoginAction
 import ru.yeahub.authentication.impl.login.presentation.model.LoginCommand
 import ru.yeahub.authentication.impl.login.presentation.model.LoginState
 import ru.yeahub.core_utils.common.TextOrResource
+
 private const val UI_STATE_STOP_TIMEOUT = 5000L
 
 /**
@@ -228,7 +229,7 @@ class LoginViewModel(
                 )
             }
 
-            is LoginError.Unknown -> {
+            else -> {
                 sendCommand(
                     command = LoginCommand.ShowSnackbar(
                         message = TextOrResource.Resource(
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 047e5897..4f5055b6 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -63,6 +63,9 @@ compose-markdown = { group = "com.github.jeziellago", name = "compose-markdown",
 retrofit-core = { group = "com.squareup.retrofit2", name = "retrofit", version.ref = "retrofit" }
 retrofit-gsonConverter = { group = "com.squareup.retrofit2", name = "converter-gson", version.ref = "retrofit" }
 
+#GSON
+gson = { module = "com.google.code.gson:gson", version = "2.14.0" }
+
 #KOIN
 koin-core = { module = "io.insert-koin:koin-core", version.ref = "koin" }
 koin-android = { module = "io.insert-koin:koin-android", version.ref = "koin" }