try arch docker

Reviewed-on: http://192.168.31.100:3847/Arrelin/family_budget/pulls/15

backend/Cargo.toml

@@ -4,24 +4,24 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-tokio = { version = "1.48.0", features = ["full"] }
+tokio = { version = "1.49.0", features = ["full"] }
-sea-orm = { version = "1.0", features = ["sqlx-postgres", "runtime-tokio-rustls", "macros"] }
+sea-orm = { version = "1.1.19", features = ["sqlx-postgres", "runtime-tokio-rustls", "macros"] }
-sea-orm-migration = { version = "1.0", default-features = false, features = ["sqlx-postgres", "runtime-tokio-rustls"] }
+sea-orm-migration = { version = "1.1.19", default-features = false, features = ["sqlx-postgres", "runtime-tokio-rustls"] }
 dotenvy = "0.15.7"
-axum = { version = "0.7", features = ["json"] }
+axum = { version = "0.8.8", features = ["json"] }
-tower-http = { version = "0.5", features = ["cors"] }
+tower-http = { version = "0.6.8", features = ["cors"] }
 chrono = { version = "0.4.42", features = ["serde"] }
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0"
 utoipa = { version = "5.4.0", features = ["axum_extras", "chrono", "decimal_float"] }
-utoipa-swagger-ui = { version = "8.0", features = ["axum"] }
+utoipa-swagger-ui = { version = "9.0.2", features = ["axum"] }
-axum-login = "0.15"
+axum-login = "0.18.0"
-tower-sessions = "0.12"
+tower-sessions = "0.14.0"
-tower-sessions-sqlx-store = { version = "0.12", features = ["postgres"] }
+tower-sessions-sqlx-store = { version = "0.15.0", features = ["postgres"] }
 argon2 = "0.5"
 async-trait = "0.1"
 thiserror = "2.0"
 time = "0.3"
 oauth2 = { version = "5.0.0", features = ["reqwest"] }
-reqwest = { version = "0.12.28", features = ["json"] }
+reqwest = { version = "0.13.1", features = ["json"] }
-rand = "0.8"
+rand = "0.9.2"

backend/Dockerfile

@@ -1,4 +1,8 @@
-FROM rust:1.92.0 AS builder
+FROM archlinux:latest AS builder
+
+RUN pacman -Syu --noconfirm && \
+    pacman -S --noconfirm rust cargo && \
+    pacman -Scc --noconfirm
 
 WORKDIR /app
 
@@ -11,12 +15,11 @@ COPY src ./src
 RUN touch src/main.rs
 RUN cargo build --release
 
-FROM debian:bookworm-slim
+FROM archlinux:latest
 
-RUN apt-get update && apt-get install -y \
+RUN pacman -Syu --noconfirm && \
-    libssl3 \
+    pacman -S --noconfirm openssl ca-certificates && \
-    ca-certificates \
+    pacman -Scc --noconfirm
-    && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 

backend/src/auth.rs

@@ -40,19 +40,20 @@ pub struct Credentials {
     pub password: String,
 }
 
-#[async_trait::async_trait]
 impl AuthnBackend for AuthBackend {
     type User = user::Model;
     type Credentials = Credentials;
     type Error = Error;
 
-    async fn authenticate(
+    fn authenticate(
         &self,
         creds: Self::Credentials,
-    ) -> Result<Option<Self::User>, Self::Error> {
+    ) -> impl Future<Output = Result<Option<Self::User>, Self::Error>> + Send {
+        let db = self.db.clone();
+        async move {
             let user = User::find()
                 .filter(user::Column::Username.eq(&creds.username))
-            .one(&self.db)
+                .one(&db)
                 .await?;
 
             if let Some(user) = user {
@@ -73,12 +74,20 @@ impl AuthnBackend for AuthBackend {
                 Err(Error::InvalidCredentials)
             }
         }
+    }
 
-    async fn get_user(&self, user_id: &UserId<Self>) -> Result<Option<Self::User>, Self::Error> {
+    fn get_user(
-        let user = User::find_by_id(*user_id).one(&self.db).await?;
+        &self,
+        user_id: &UserId<Self>,
+    ) -> impl Future<Output = Result<Option<Self::User>, Self::Error>> + Send {
+        let db = self.db.clone();
+        let user_id = *user_id;
+        async move {
+            let user = User::find_by_id(user_id).one(&db).await?;
             Ok(user)
         }
     }
+}
 
 pub fn hash_password(password: &str) -> Result<String, Error> {
     let salt = SaltString::generate(&mut OsRng);

backend/src/lib.rs

@@ -63,6 +63,8 @@ pub use middleware::{require_admin, require_family_access};
         routes::invite_link::delete_invite_link,
         routes::invite_link::validate_invite_link,
         routes::invite_link::join_family_via_invite,
+        routes::user::leave_family,
+        routes::user::get_family_members,
     ),
     components(
         schemas(
@@ -94,6 +96,8 @@ pub use middleware::{require_admin, require_family_access};
             routes::invite_link::InviteLinkResponse,
             routes::invite_link::ValidateInviteResponse,
             routes::invite_link::JoinFamilyResponse,
+            routes::user::LeaveFamilyResponse,
+            routes::user::FamilyMember,
         )
     ),
     tags(
@@ -102,7 +106,8 @@ pub use middleware::{require_admin, require_family_access};
         (name = "categories", description = "Category management endpoints"),
         (name = "expenses", description = "Expense management endpoints"),
         (name = "shopping-items", description = "Shopping list management endpoints"),
-        (name = "invite-links", description = "Family invite link management endpoints")
+        (name = "invite-links", description = "Family invite link management endpoints"),
+        (name = "user", description = "User profile management endpoints")
     ),
     info(
         title = "Family Budget API",
@@ -145,7 +150,7 @@ pub async fn create_app(db: DatabaseConnection) -> Result<Router, DbErr> {
 
     let admin_family_routes = Router::new()
         .route("/families", post(routes::family::create_family))
-        .route("/families/:id", delete(routes::family::delete_family))
+        .route("/families/{id}", delete(routes::family::delete_family))
         .route_layer(axum_middleware::from_fn(middleware::require_admin))
         .layer(auth_layer.clone())
         .with_state(db.clone());
@@ -154,6 +159,7 @@ pub async fn create_app(db: DatabaseConnection) -> Result<Router, DbErr> {
         .route("/login", post(routes::auth::login))
         .route("/logout", post(routes::auth::logout))
         .route("/me", get(routes::auth::me))
+        .route("/me/leave-family", post(routes::user::leave_family))
         .route("/my-family", post(routes::family::create_my_family))
         .route("/auth/family-login", post(routes::auth::family_login))
         .layer(auth_layer.clone())
@@ -168,41 +174,42 @@ pub async fn create_app(db: DatabaseConnection) -> Result<Router, DbErr> {
     let invite_link_routes = Router::new()
         .route("/my-family/invite-links", post(routes::invite_link::create_invite_link))
         .route("/my-family/invite-links", get(routes::invite_link::get_my_invite_links))
-        .route("/my-family/invite-links/:token", delete(routes::invite_link::delete_invite_link))
+        .route("/my-family/invite-links/{token}", delete(routes::invite_link::delete_invite_link))
-        .route("/invite/:token/join", post(routes::invite_link::join_family_via_invite))
+        .route("/invite/{token}/join", post(routes::invite_link::join_family_via_invite))
-        .layer(auth_layer)
+        .layer(auth_layer.clone())
         .with_state(db.clone());
 
     let family_protected_routes = Router::new()
-        .route("/families/:family_id/categories", post(routes::category::create_category))
+        .route("/families/{family_id}/categories", post(routes::category::create_category))
-        .route("/families/:family_id/categories", get(routes::category::get_categories_by_family))
+        .route("/families/{family_id}/categories", get(routes::category::get_categories_by_family))
-        .route("/families/:family_id/categories/:category_id", get(routes::category::get_category))
+        .route("/families/{family_id}/categories/{category_id}", get(routes::category::get_category))
-        .route("/families/:family_id/categories/:category_id", put(routes::category::update_category))
+        .route("/families/{family_id}/categories/{category_id}", put(routes::category::update_category))
-        .route("/families/:family_id/categories/:category_id", delete(routes::category::delete_category))
+        .route("/families/{family_id}/categories/{category_id}", delete(routes::category::delete_category))
-        .route("/families/:family_id/categories/:category_id/expenses", post(routes::expense::create_expense))
+        .route("/families/{family_id}/categories/{category_id}/expenses", post(routes::expense::create_expense))
-        .route("/families/:family_id/categories/:category_id/expenses", get(routes::expense::get_expenses_by_category))
+        .route("/families/{family_id}/categories/{category_id}/expenses", get(routes::expense::get_expenses_by_category))
-        .route("/families/:family_id/categories/:category_id/expenses/:expense_id", get(routes::expense::get_expense))
+        .route("/families/{family_id}/categories/{category_id}/expenses/{expense_id}", get(routes::expense::get_expense))
-        .route("/families/:family_id/categories/:category_id/expenses/:expense_id", put(routes::expense::update_expense))
+        .route("/families/{family_id}/categories/{category_id}/expenses/{expense_id}", put(routes::expense::update_expense))
-        .route("/families/:family_id/categories/:category_id/expenses/:expense_id", delete(routes::expense::delete_expense))
+        .route("/families/{family_id}/categories/{category_id}/expenses/{expense_id}", delete(routes::expense::delete_expense))
-        .route("/families/:family_id/categories/:category_id/remaining", get(routes::expense::get_remaining_limit))
+        .route("/families/{family_id}/categories/{category_id}/remaining", get(routes::expense::get_remaining_limit))
-        .route("/families/:family_id/shopping-items", post(routes::shopping_item::create_shopping_item))
+        .route("/families/{family_id}/shopping-items", post(routes::shopping_item::create_shopping_item))
-        .route("/families/:family_id/shopping-items", get(routes::shopping_item::get_shopping_items_by_family))
+        .route("/families/{family_id}/shopping-items", get(routes::shopping_item::get_shopping_items_by_family))
-        .route("/families/:family_id/shopping-items/:id", get(routes::shopping_item::get_shopping_item))
+        .route("/families/{family_id}/shopping-items/{id}", get(routes::shopping_item::get_shopping_item))
-        .route("/families/:family_id/shopping-items/:id", put(routes::shopping_item::update_shopping_item))
+        .route("/families/{family_id}/shopping-items/{id}", put(routes::shopping_item::update_shopping_item))
-        .route("/families/:family_id/shopping-items/:id", delete(routes::shopping_item::delete_shopping_item))
+        .route("/families/{family_id}/shopping-items/{id}", delete(routes::shopping_item::delete_shopping_item))
-        .route("/families/:family_id/shopping-items/:id/purchased", axum::routing::patch(routes::shopping_item::mark_as_purchased))
+        .route("/families/{family_id}/shopping-items/{id}/purchased", axum::routing::patch(routes::shopping_item::mark_as_purchased))
-        .route("/families/:family_id/shopping-items/mark-all-purchased", post(routes::shopping_item::mark_all_as_purchased))
+        .route("/families/{family_id}/shopping-items/mark-all-purchased", post(routes::shopping_item::mark_all_as_purchased))
-        .route("/families/:family_id/shopping-items/clear-all", delete(routes::shopping_item::clear_all))
+        .route("/families/{family_id}/shopping-items/clear-all", delete(routes::shopping_item::clear_all))
+        .route("/families/{family_id}/members", get(routes::user::get_family_members))
         .route_layer(axum_middleware::from_fn(middleware::require_family_access))
-        .layer(session_layer.clone())
+        .layer(auth_layer.clone())
         .with_state(db.clone());
 
     let public_routes = Router::new()
         .route("/families", get(routes::family::get_all_families))
-        .route("/families/:id", get(routes::family::get_family))
+        .route("/families/{id}", get(routes::family::get_family))
-        .route("/families/:id", put(routes::family::update_family))
+        .route("/families/{id}", put(routes::family::update_family))
-        .route("/families/:id/verify", post(routes::family::verify_family_password))
+        .route("/families/{id}/verify", post(routes::family::verify_family_password))
-        .route("/invite/:token", get(routes::invite_link::validate_invite_link))
+        .route("/invite/{token}", get(routes::invite_link::validate_invite_link))
         .layer(session_layer)
         .with_state(db);
 

backend/src/routes/mod.rs

@@ -5,3 +5,4 @@ pub mod auth;
 pub mod shopping_item;
 pub mod oauth;
 pub mod invite_link;
+pub mod user;

backend/src/routes/user.rs

@@ -0,0 +1,97 @@
+use axum::{
+    extract::{State, Path},
+    http::StatusCode,
+    Json,
+};
+use axum_login::AuthSession;
+use sea_orm::DatabaseConnection;
+use serde::Serialize;
+use utoipa::ToSchema;
+
+use crate::auth::AuthBackend;
+use crate::services::{UserService, FamilyService};
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct LeaveFamilyResponse {
+    pub family_deleted: bool,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct FamilyMember {
+    pub id: i32,
+    pub username: Option<String>,
+    pub email: Option<String>,
+    pub is_admin: bool,
+}
+
+#[utoipa::path(
+    post,
+    path = "/me/leave-family",
+    tag = "user",
+    responses(
+        (status = 200, description = "Left family successfully", body = LeaveFamilyResponse),
+        (status = 400, description = "User is not in a family"),
+        (status = 401, description = "Not authenticated")
+    )
+)]
+pub async fn leave_family(
+    auth_session: AuthSession<AuthBackend>,
+    State(db): State<DatabaseConnection>,
+) -> Result<Json<LeaveFamilyResponse>, StatusCode> {
+    let user = auth_session.user.ok_or(StatusCode::UNAUTHORIZED)?;
+
+    let result = UserService::leave_family(&db, user.id)
+        .await
+        .map_err(|e| {
+            if e.to_string().contains("not in a family") {
+                StatusCode::BAD_REQUEST
+            } else {
+                StatusCode::INTERNAL_SERVER_ERROR
+            }
+        })?;
+
+    Ok(Json(LeaveFamilyResponse {
+        family_deleted: result.family_deleted,
+    }))
+}
+
+#[utoipa::path(
+    get,
+    path = "/families/{family_id}/members",
+    tag = "families",
+    params(
+        ("family_id" = i32, Path, description = "Family ID")
+    ),
+    responses(
+        (status = 200, description = "List of family members", body = Vec<FamilyMember>),
+        (status = 401, description = "Not authenticated"),
+        (status = 403, description = "Access denied")
+    )
+)]
+pub async fn get_family_members(
+    auth_session: AuthSession<AuthBackend>,
+    State(db): State<DatabaseConnection>,
+    Path(family_id): Path<i32>,
+) -> Result<Json<Vec<FamilyMember>>, StatusCode> {
+    let user = auth_session.user.ok_or(StatusCode::UNAUTHORIZED)?;
+
+    if user.family_id != Some(family_id) && !user.is_admin {
+        return Err(StatusCode::FORBIDDEN);
+    }
+
+    let members = FamilyService::get_members(&db, family_id)
+        .await
+        .map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
+
+    let response: Vec<FamilyMember> = members
+        .into_iter()
+        .map(|m| FamilyMember {
+            id: m.id,
+            username: m.username,
+            email: m.email,
+            is_admin: m.is_admin,
+        })
+        .collect();
+
+    Ok(Json(response))
+}

backend/src/services/family_service.rs

@@ -4,6 +4,7 @@ use argon2::{
     Argon2,
 };
 use crate::models::family::{self, Entity as Family, Model as FamilyModel};
+use crate::models::user::{self, Entity as User, Model as UserModel};
 
 pub struct FamilyService;
 
@@ -72,4 +73,11 @@ impl FamilyService {
         let family: family::ActiveModel = family.into();
         family.delete(db).await
     }
+
+    pub async fn get_members(db: &DatabaseConnection, family_id: i32) -> Result<Vec<UserModel>, DbErr> {
+        User::find()
+            .filter(user::Column::FamilyId.eq(family_id))
+            .all(db)
+            .await
+    }
 }

backend/src/services/invite_link_service.rs

@@ -1,5 +1,5 @@
 use sea_orm::*;
-use rand::distributions::Alphanumeric;
+use rand::distr::Alphanumeric;
 use rand::Rng;
 use crate::models::invite_link::{self, Entity as InviteLink, Model as InviteLinkModel};
 use crate::models::{user, User};
@@ -8,7 +8,7 @@ pub struct InviteLinkService;
 
 impl InviteLinkService {
     pub fn generate_token() -> String {
-        rand::thread_rng()
+        rand::rng()
             .sample_iter(&Alphanumeric)
             .take(32)
             .map(char::from)

backend/src/services/mod.rs

@@ -4,6 +4,7 @@ pub mod expense_service;
 pub mod shopping_item_service;
 pub mod oauth_service;
 pub mod invite_link_service;
+pub mod user_service;
 
 pub use family_service::FamilyService;
 pub use category_service::CategoryService;
@@ -11,3 +12,4 @@ pub use expense_service::ExpenseService;
 pub use shopping_item_service::ShoppingItemService;
 pub use oauth_service::OAuthService;
 pub use invite_link_service::InviteLinkService;
+pub use user_service::UserService;

backend/src/services/oauth_service.rs

@@ -1,7 +1,5 @@
-use oauth2::{
+use oauth2::{basic::BasicClient, AuthUrl, ClientId, ClientSecret, RedirectUrl, TokenUrl, AuthorizationCode, TokenResponse, Scope, CsrfToken, Client, StandardRevocableToken, EndpointSet, EndpointNotSet};
-    basic::BasicClient, AuthUrl, ClientId, ClientSecret, RedirectUrl, TokenUrl,
+use oauth2::basic::{BasicErrorResponse, BasicRevocationErrorResponse, BasicTokenIntrospectionResponse, BasicTokenResponse};
-    AuthorizationCode, TokenResponse, Scope, CsrfToken,
-};
 use reqwest::Client as HttpClient;
 use sea_orm::{DatabaseConnection, EntityTrait, ColumnTrait, QueryFilter, ActiveModelTrait, Set};
 use serde::Deserialize;
@@ -34,11 +32,7 @@ impl OAuthService {
         let redirect_url = std::env::var("GOOGLE_REDIRECT_URL")
             .unwrap_or_else(|_| "http://localhost:8080/api/auth/google/callback".to_string());
 
-        let client = BasicClient::new(ClientId::new(client_id))
+        let client = Self::getClient(client_id, client_secret, redirect_url);
-            .set_client_secret(ClientSecret::new(client_secret))
-            .set_auth_uri(AuthUrl::new("https://accounts.google.com/o/oauth2/v2/auth".to_string()).unwrap())
-            .set_token_uri(TokenUrl::new("https://oauth2.googleapis.com/token".to_string()).unwrap())
-            .set_redirect_uri(RedirectUrl::new(redirect_url).unwrap());
 
         let (auth_url, csrf_token) = client
             .authorize_url(CsrfToken::new_random)
@@ -58,11 +52,7 @@ impl OAuthService {
         let redirect_url = std::env::var("GOOGLE_REDIRECT_URL")
             .unwrap_or_else(|_| "http://localhost:8080/api/auth/google/callback".to_string());
 
-        let client = BasicClient::new(ClientId::new(client_id))
+        let client = Self::getClient(client_id, client_secret, redirect_url);
-            .set_client_secret(ClientSecret::new(client_secret))
-            .set_auth_uri(AuthUrl::new("https://accounts.google.com/o/oauth2/v2/auth".to_string()).unwrap())
-            .set_token_uri(TokenUrl::new("https://oauth2.googleapis.com/token".to_string()).unwrap())
-            .set_redirect_uri(RedirectUrl::new(redirect_url).unwrap());
 
         let http_client = oauth2::reqwest::ClientBuilder::new()
             .build()
@@ -77,6 +67,23 @@ impl OAuthService {
         Ok(token.access_token().secret().clone())
     }
 
+    fn getClient(client_id: String, client_secret: String, redirect_url: String) -> Client<BasicErrorResponse,
+                                                                                           BasicTokenResponse,
+                                                                                           BasicTokenIntrospectionResponse,
+                                                                                           StandardRevocableToken,
+                                                                                           BasicRevocationErrorResponse,
+                                                                                           EndpointSet,
+                                                                                           EndpointNotSet,
+                                                                                           EndpointNotSet,
+                                                                                           EndpointNotSet,
+                                                                                           EndpointSet> {
+        BasicClient::new(ClientId::new(client_id))
+            .set_client_secret(ClientSecret::new(client_secret))
+            .set_auth_uri(AuthUrl::new("https://accounts.google.com/o/oauth2/v2/auth".to_string()).unwrap())
+            .set_token_uri(TokenUrl::new("https://oauth2.googleapis.com/token".to_string()).unwrap())
+            .set_redirect_uri(RedirectUrl::new(redirect_url).unwrap())
+    }
+
     pub async fn get_user_info(&self, access_token: &str) -> Result<GoogleUserInfo, OAuthError> {
         let response = self.http_client
             .get("https://www.googleapis.com/oauth2/v2/userinfo")

backend/src/services/user_service.rs

@@ -0,0 +1,44 @@
+use sea_orm::*;
+use crate::models::user::{self, Entity as User, Model as UserModel};
+use crate::models::family::{Entity as Family};
+
+pub struct UserService;
+
+#[derive(Debug)]
+pub struct LeaveFamilyResult {
+    pub family_deleted: bool,
+}
+
+impl UserService {
+    pub async fn leave_family(db: &DatabaseConnection, user_id: i32) -> Result<LeaveFamilyResult, DbErr> {
+        let user = User::find_by_id(user_id)
+            .one(db)
+            .await?
+            .ok_or(DbErr::RecordNotFound("User not found".to_string()))?;
+
+        let family_id = user.family_id
+            .ok_or(DbErr::Custom("User is not in a family".to_string()))?;
+
+        let mut user_active: user::ActiveModel = user.into();
+        user_active.family_id = Set(None);
+        user_active.update(db).await?;
+
+        let remaining_members = User::find()
+            .filter(user::Column::FamilyId.eq(family_id))
+            .count(db)
+            .await?;
+
+        let family_deleted = if remaining_members == 0 {
+            Family::delete_by_id(family_id).exec(db).await?;
+            true
+        } else {
+            false
+        };
+
+        Ok(LeaveFamilyResult { family_deleted })
+    }
+
+    pub async fn find_by_id(db: &DatabaseConnection, id: i32) -> Result<Option<UserModel>, DbErr> {
+        User::find_by_id(id).one(db).await
+    }
+}

frontend/package-lock.json

@@ -16,6 +16,7 @@
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
         "react-i18next": "^16.5.3",
+        "react-icons": "^5.5.0",
         "react-router-dom": "^7.10.1",
         "zustand": "^5.0.9"
       },
@@ -3819,6 +3820,15 @@
         }
       }
     },
+    "node_modules/react-icons": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/react-icons/-/react-icons-5.5.0.tgz",
+      "integrity": "sha512-MEFcXdkP3dLo8uumGI5xN3lDFNsRtrjbOEKDLD7yv76v4wpnEq2Lt2qeHaQOr34I/wPN3s3+N08WkQ+CW37Xiw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "*"
+      }
+    },
     "node_modules/react-refresh": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/react-refresh/-/react-refresh-0.18.0.tgz",

frontend/package.json

@@ -18,6 +18,7 @@
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "react-i18next": "^16.5.3",
+    "react-icons": "^5.5.0",
     "react-router-dom": "^7.10.1",
     "zustand": "^5.0.9"
   },

frontend/src/App.tsx

@@ -6,16 +6,25 @@ import FamilyView from './pages/FamilyView';
 import AdminPanel from './pages/AdminPanel';
 import NoFamily from './pages/NoFamily';
 import InvitePage from './pages/InvitePage';
+import Profile from './pages/Profile';
 import { useStore } from './store/useStore';
 import { authApi } from './api/client';
 import { Loader2 } from 'lucide-react';
 
 function AppContent() {
-  const { t } = useTranslation();
+  const { t, i18n } = useTranslation();
   const { user, isAuthenticated, isLoading, setUser, setIsLoading } = useStore();
   const location = useLocation();
 
   useEffect(() => {
+    const storedTheme = localStorage.getItem('theme') || 'light';
+    document.documentElement.setAttribute('data-theme', storedTheme);
+
+    const storedLocale = localStorage.getItem('locale');
+    if (storedLocale && storedLocale !== i18n.language) {
+      i18n.changeLanguage(storedLocale);
+    }
+
     checkAuth();
   }, []);
 
@@ -61,6 +70,7 @@ function AppContent() {
     return (
       <Routes>
         <Route path="/adminpanel" element={<AdminPanel />} />
+        <Route path="/profile" element={<Profile />} />
         <Route path="*" element={<NoFamily />} />
       </Routes>
     );
@@ -70,6 +80,7 @@ function AppContent() {
     <Routes>
       <Route path="/" element={<Navigate to={`/family/${user.family_id}`} replace />} />
       <Route path="/family/:familyId" element={<FamilyView />} />
+      <Route path="/profile" element={<Profile />} />
       <Route path="/adminpanel" element={<AdminPanel />} />
       <Route path="*" element={<Navigate to={`/family/${user.family_id}`} replace />} />
     </Routes>

frontend/src/api/client.ts

@@ -24,6 +24,8 @@ import type {
   InviteLinkResponse,
   ValidateInviteResponse,
   JoinFamilyResponse,
+  FamilyMember,
+  LeaveFamilyResponse,
 } from '../types';
 
 const API_BASE_URL = import.meta.env.VITE_API_BASE_URL || '';
@@ -70,6 +72,14 @@ export const familyApi = {
 
   verifyPassword: (id: number, data: VerifyFamilyPasswordRequest) =>
     apiClient.post<VerifyFamilyPasswordResponse>(`/families/${id}/verify`, data),
+
+  getMembers: (familyId: number) =>
+    apiClient.get<FamilyMember[]>(`/families/${familyId}/members`),
+};
+
+export const userApi = {
+  leaveFamily: () =>
+    apiClient.post<LeaveFamilyResponse>('/me/leave-family'),
 };
 
 export const categoryApi = {

frontend/src/components/ConfirmModal.tsx

@@ -27,8 +27,8 @@ export default function ConfirmModal({
     switch (variant) {
       case 'danger':
         return {
-          icon: 'bg-red-100 text-red-600',
+          icon: 'btn-danger',
-          confirmButton: 'bg-gradient-to-r from-red-500 to-red-600 hover:shadow-lg',
+          confirmButton: 'btn-danger hover:shadow-lg',
         };
       case 'warning':
         return {
@@ -37,8 +37,8 @@ export default function ConfirmModal({
         };
       case 'info':
         return {
-          icon: 'bg-blue-100 text-blue-600',
+          icon: 'btn-primary',
-          confirmButton: 'bg-gradient-to-r from-blue-500 to-blue-600 hover:shadow-lg',
+          confirmButton: 'btn-primary hover:shadow-lg',
         };
     }
   };
@@ -47,10 +47,10 @@ export default function ConfirmModal({
 
   return (
     <div className="fixed inset-0 bg-black/50 backdrop-blur-sm flex items-center justify-center z-[60] p-4">
-      <div className="bg-white rounded-3xl shadow-2xl max-w-md w-full overflow-hidden animate-scale-in">
+      <div className="glass-effect rounded-3xl shadow-2xl max-w-md w-full overflow-hidden animate-scale-in">
         <div className="p-6">
           <div className="flex items-start gap-4">
-            <div className={`p-3 rounded-2xl ${styles.icon}`}>
+            <div className={`p-3 rounded-2xl ${styles.icon} text-white`}>
               <AlertTriangle className="w-6 h-6" />
             </div>
             <div className="flex-1">

frontend/src/components/ShoppingListModal.tsx

@@ -189,8 +189,8 @@ export default function ShoppingListModal({ familyId, onClose }: ShoppingListMod
   return (
     <>
       <div className="fixed inset-0 bg-black/50 backdrop-blur-sm flex items-center justify-center z-50 p-4">
-        <div className="bg-white rounded-3xl shadow-2xl max-w-2xl w-full max-h-[90vh] overflow-hidden flex flex-col">
+        <div className="glass-effect rounded-3xl shadow-2xl max-w-2xl w-full max-h-[90vh] overflow-hidden flex flex-col">
-          <div className="bg-gradient-to-r from-green-500 to-emerald-600 p-6 flex items-center justify-between">
+          <div className="btn-success p-6 flex items-center justify-between">
             <div className="flex items-center gap-3">
               <div className="p-3 bg-white/20 backdrop-blur-md rounded-2xl">
                 <ShoppingCart className="w-8 h-8 text-white" />
@@ -218,7 +218,7 @@ export default function ShoppingListModal({ familyId, onClose }: ShoppingListMod
                 />
                 <button
                   onClick={handleAddItem}
-                  className="px-6 py-3 bg-gradient-to-r from-green-500 to-green-600 text-white rounded-2xl hover:shadow-lg transition-all font-semibold flex items-center gap-2"
+                  className="px-6 py-3 btn-success text-white rounded-2xl hover:shadow-lg transition-all font-semibold flex items-center gap-2"
                 >
                   <Plus className="w-5 h-5" />
                   <span className="hidden sm:inline">{t('common.add')}</span>
@@ -302,7 +302,7 @@ export default function ShoppingListModal({ familyId, onClose }: ShoppingListMod
                       {purchasedItems.map((item) => (
                         <div
                           key={item.id}
-                          className="bg-green-50 p-4 rounded-2xl border-2 border-green-200"
+                          className="shopping-purchased p-4 rounded-2xl border-2"
                         >
                           <div className="flex items-center justify-between">
                             <div className="flex items-center gap-3">
@@ -342,14 +342,14 @@ export default function ShoppingListModal({ familyId, onClose }: ShoppingListMod
               <div className="flex gap-3">
                 <button
                   onClick={handleMarkAllPurchased}
-                  className="flex-1 flex items-center justify-center gap-2 px-4 py-3 bg-gradient-to-r from-green-500 to-green-600 text-white rounded-2xl hover:shadow-lg transition-all font-semibold"
+                  className="flex-1 flex items-center justify-center gap-2 px-4 py-3 btn-success text-white rounded-2xl hover:shadow-lg transition-all font-semibold"
                 >
                   <Check className="w-5 h-5" />
                   {t('shopping.allPurchased')}
                 </button>
                 <button
                   onClick={handleClearAll}
-                  className="flex-1 flex items-center justify-center gap-2 px-4 py-3 bg-gradient-to-r from-red-500 to-red-600 text-white rounded-2xl hover:shadow-lg transition-all font-semibold"
+                  className="flex-1 flex items-center justify-center gap-2 px-4 py-3 btn-danger text-white rounded-2xl hover:shadow-lg transition-all font-semibold"
                 >
                   <Trash2 className="w-5 h-5" />
                   {t('shopping.clear')}

frontend/src/i18n/locales/en.json

@@ -139,5 +139,34 @@
     "markButton": "Mark",
     "clearAll": "Clear list?",
     "clearAllMessage": "All items will be permanently removed from the list."
+  },
+  "profile": {
+    "title": "Profile",
+    "info": "Information",
+    "username": "Username",
+    "email": "Email",
+    "family": "Family",
+    "familyName": "Family name",
+    "members": "Members",
+    "you": "You",
+    "unknownUser": "User",
+    "settings": "Settings",
+    "language": "Language",
+    "theme": "Theme",
+    "dangerZone": "Danger zone",
+    "leaveFamily": "Leave family",
+    "leaveDescription": "If you leave the family, you will lose access to the budget. If you are the last member, the family will be deleted along with all data.",
+    "leaveConfirm": "Are you sure you want to leave the family?",
+    "leaving": "Leaving...",
+    "leaveError": "Error leaving family",
+    "renameError": "Error renaming family",
+    "themes": {
+      "light": "Light",
+      "dark": "Dark",
+      "sunset": "Sunset",
+      "ocean": "Ocean",
+      "forest": "Forest",
+      "purple": "Purple"
+    }
   }
 }

frontend/src/i18n/locales/ru.json

@@ -139,5 +139,34 @@
     "markButton": "Пометить",
     "clearAll": "Очистить список?",
     "clearAllMessage": "Все покупки будут удалены из списка безвозвратно."
+  },
+  "profile": {
+    "title": "Личный кабинет",
+    "info": "Информация",
+    "username": "Имя пользователя",
+    "email": "Email",
+    "family": "Семья",
+    "familyName": "Название семьи",
+    "members": "Участники",
+    "you": "Вы",
+    "unknownUser": "Пользователь",
+    "settings": "Настройки",
+    "language": "Язык",
+    "theme": "Тема",
+    "dangerZone": "Опасная зона",
+    "leaveFamily": "Покинуть семью",
+    "leaveDescription": "Если вы покинете семью, вы потеряете доступ к бюджету. Если вы последний участник, семья будет удалена вместе со всеми данными.",
+    "leaveConfirm": "Вы уверены, что хотите покинуть семью?",
+    "leaving": "Выход...",
+    "leaveError": "Ошибка при выходе из семьи",
+    "renameError": "Ошибка при переименовании семьи",
+    "themes": {
+      "light": "Светлая",
+      "dark": "Тёмная",
+      "sunset": "Закат",
+      "ocean": "Океан",
+      "forest": "Лес",
+      "purple": "Фиолетовая"
+    }
   }
 }

frontend/src/index.css

@@ -1,7 +1,110 @@
 @import "tailwindcss";
 
+:root,
+[data-theme="light"] {
+  --gradient-start: #667eea;
+  --gradient-end: #764ba2;
+  --glass-bg: rgba(255, 255, 255, 0.8);
+  --text-primary: #1f2937;
+  --text-secondary: #6b7280;
+  --category-from: #8b5cf6;
+  --category-to: #3b82f6;
+  --btn-primary-from: #8b5cf6;
+  --btn-primary-to: #6366f1;
+  --btn-success-from: #22c55e;
+  --btn-success-to: #16a34a;
+  --btn-danger-from: #ef4444;
+  --btn-danger-to: #ec4899;
+  --card-bg: rgba(255, 255, 255, 0.8);
+}
+
+[data-theme="dark"] {
+  --gradient-start: #000000;
+  --gradient-end: #000000;
+  --glass-bg: rgba(17, 17, 17, 0.95);
+  --text-primary: #f9fafb;
+  --text-secondary: #d1d5db;
+  --category-from: #6366f1;
+  --category-to: #8b5cf6;
+  --btn-primary-from: #6366f1;
+  --btn-primary-to: #8b5cf6;
+  --btn-success-from: #059669;
+  --btn-success-to: #10b981;
+  --btn-danger-from: #dc2626;
+  --btn-danger-to: #be185d;
+  --card-bg: rgba(31, 31, 31, 0.9);
+}
+
+[data-theme="sunset"] {
+  --gradient-start: #f97316;
+  --gradient-end: #ec4899;
+  --glass-bg: rgba(255, 255, 255, 0.85);
+  --text-primary: #1f2937;
+  --text-secondary: #6b7280;
+  --category-from: #f97316;
+  --category-to: #ec4899;
+  --btn-primary-from: #f97316;
+  --btn-primary-to: #ea580c;
+  --btn-success-from: #22c55e;
+  --btn-success-to: #16a34a;
+  --btn-danger-from: #ef4444;
+  --btn-danger-to: #dc2626;
+  --card-bg: rgba(255, 255, 255, 0.85);
+}
+
+[data-theme="ocean"] {
+  --gradient-start: #3b82f6;
+  --gradient-end: #06b6d4;
+  --glass-bg: rgba(255, 255, 255, 0.85);
+  --text-primary: #1f2937;
+  --text-secondary: #6b7280;
+  --category-from: #3b82f6;
+  --category-to: #06b6d4;
+  --btn-primary-from: #3b82f6;
+  --btn-primary-to: #2563eb;
+  --btn-success-from: #22c55e;
+  --btn-success-to: #16a34a;
+  --btn-danger-from: #ef4444;
+  --btn-danger-to: #dc2626;
+  --card-bg: rgba(255, 255, 255, 0.85);
+}
+
+[data-theme="forest"] {
+  --gradient-start: #22c55e;
+  --gradient-end: #14b8a6;
+  --glass-bg: rgba(255, 255, 255, 0.85);
+  --text-primary: #1f2937;
+  --text-secondary: #6b7280;
+  --category-from: #22c55e;
+  --category-to: #14b8a6;
+  --btn-primary-from: #22c55e;
+  --btn-primary-to: #16a34a;
+  --btn-success-from: #22c55e;
+  --btn-success-to: #16a34a;
+  --btn-danger-from: #ef4444;
+  --btn-danger-to: #dc2626;
+  --card-bg: rgba(255, 255, 255, 0.85);
+}
+
+[data-theme="purple"] {
+  --gradient-start: #8b5cf6;
+  --gradient-end: #ec4899;
+  --glass-bg: rgba(255, 255, 255, 0.85);
+  --text-primary: #1f2937;
+  --text-secondary: #6b7280;
+  --category-from: #8b5cf6;
+  --category-to: #ec4899;
+  --btn-primary-from: #8b5cf6;
+  --btn-primary-to: #7c3aed;
+  --btn-success-from: #22c55e;
+  --btn-success-to: #16a34a;
+  --btn-danger-from: #ef4444;
+  --btn-danger-to: #dc2626;
+  --card-bg: rgba(255, 255, 255, 0.85);
+}
+
 .gradient-bg {
-  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
 }
 
 .gradient-bg-light {
@@ -18,10 +121,104 @@
 }
 
 .glass-effect {
-  background: rgb(255 255 255 / 0.8);
+  background: var(--glass-bg);
   backdrop-filter: blur(12px);
 }
 
+.category-icon {
+  background: linear-gradient(135deg, var(--category-from) 0%, var(--category-to) 100%);
+}
+
+.btn-primary {
+  background: linear-gradient(135deg, var(--btn-primary-from) 0%, var(--btn-primary-to) 100%);
+}
+
+.btn-success {
+  background: linear-gradient(135deg, var(--btn-success-from) 0%, var(--btn-success-to) 100%);
+}
+
+.btn-danger {
+  background: linear-gradient(135deg, var(--btn-danger-from) 0%, var(--btn-danger-to) 100%);
+}
+
+[data-theme="dark"] .glass-effect {
+  color: var(--text-primary);
+}
+
+[data-theme="dark"] .text-gray-800,
+[data-theme="dark"] .text-gray-900 {
+  color: var(--text-primary);
+}
+
+[data-theme="dark"] .text-gray-600,
+[data-theme="dark"] .text-gray-500 {
+  color: var(--text-secondary);
+}
+
+[data-theme="dark"] .bg-gray-100,
+[data-theme="dark"] .bg-gray-50 {
+  background-color: rgba(55, 55, 55, 0.5);
+}
+
+[data-theme="dark"] .bg-gray-200 {
+  background-color: rgba(75, 75, 75, 0.5);
+}
+
+[data-theme="dark"] .border-gray-200,
+[data-theme="dark"] .border-gray-300 {
+  border-color: rgba(75, 75, 75, 0.8);
+}
+
+[data-theme="dark"] input,
+[data-theme="dark"] textarea {
+  background-color: rgba(40, 40, 40, 0.9);
+  color: var(--text-primary);
+  border-color: rgba(75, 75, 75, 0.8);
+}
+
+[data-theme="dark"] input::placeholder,
+[data-theme="dark"] textarea::placeholder {
+  color: var(--text-secondary);
+}
+
+.member-current {
+  background-color: rgb(243, 232, 255);
+  border-color: rgb(216, 180, 254);
+}
+
+[data-theme="dark"] .member-current {
+  background-color: rgba(139, 92, 246, 0.2);
+  border-color: rgba(139, 92, 246, 0.5);
+}
+
+.shopping-purchased {
+  background-color: rgb(240, 253, 244);
+  border-color: rgb(187, 247, 208);
+}
+
+[data-theme="dark"] .shopping-purchased {
+  background-color: rgba(34, 197, 94, 0.15);
+  border-color: rgba(34, 197, 94, 0.4);
+}
+
+.expense-history-item {
+  background-color: rgb(255, 255, 255);
+  border-color: rgb(229, 231, 235);
+}
+
+[data-theme="dark"] .expense-history-item {
+  background-color: rgba(55, 55, 55, 0.6);
+  border-color: rgba(75, 75, 75, 0.8);
+}
+
+.expense-description {
+  background-color: rgb(249, 250, 251);
+}
+
+[data-theme="dark"] .expense-description {
+  background-color: rgba(40, 40, 40, 0.8);
+}
+
 .animate-fadeIn {
   animation: fadeIn 0.2s ease-in-out;
 }

frontend/src/pages/AdminPanel.tsx

@@ -81,7 +81,7 @@ export default function AdminPanel() {
         <div className="max-w-md w-full">
           <div className="glass-effect rounded-2xl shadow-2xl p-6 sm:p-8 text-center">
             <div className="flex items-center justify-center mb-6">
-              <div className="p-4 bg-linear-to-br from-red-500 to-orange-500 text-white rounded-2xl">
+              <div className="p-4 btn-danger text-white rounded-2xl">
                 <Shield className="w-10 h-10 sm:w-12 sm:h-12" />
               </div>
             </div>
@@ -137,7 +137,7 @@ export default function AdminPanel() {
 
         <div className="glass-effect rounded-3xl shadow-xl p-6 sm:p-10 mb-6 max-w-2xl mx-auto">
           <div className="flex items-center justify-center gap-3 mb-8">
-            <div className="p-3 bg-linear-to-br from-green-500 to-green-600 rounded-2xl">
+            <div className="p-3 btn-success rounded-2xl">
               <Plus className="w-8 h-8 text-white" />
             </div>
             <h2 className="text-2xl sm:text-3xl font-bold text-gray-800">
@@ -174,7 +174,7 @@ export default function AdminPanel() {
             </div>
             <button
               onClick={handleCreateFamily}
-              className="w-full flex items-center justify-center gap-2 px-6 py-4 bg-linear-to-r from-green-500 to-green-600 text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold text-lg"
+              className="w-full flex items-center justify-center gap-2 px-6 py-4 btn-success text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold text-lg"
             >
               <Plus className="w-6 h-6" />
               {t('admin.createButton')}
@@ -184,7 +184,7 @@ export default function AdminPanel() {
 
         <div className="glass-effect rounded-3xl shadow-xl p-6 sm:p-10 max-w-3xl mx-auto">
           <div className="flex items-center justify-center gap-3 mb-8">
-            <div className="p-3 bg-linear-to-br from-purple-500 to-blue-500 rounded-2xl">
+            <div className="p-3 category-icon rounded-2xl">
               <Users className="w-8 h-8 text-white" />
             </div>
             <h2 className="text-2xl sm:text-3xl font-bold text-gray-800">
@@ -194,8 +194,8 @@ export default function AdminPanel() {
 
           {families.length === 0 ? (
             <div className="text-center py-16 sm:py-20">
-              <div className="inline-flex p-6 bg-linear-to-br from-purple-100 to-blue-100 rounded-3xl mb-6">
+              <div className="inline-flex p-6 bg-gray-100 rounded-3xl mb-6">
-                <Users className="w-20 h-20 text-purple-400" />
+                <Users className="w-20 h-20 text-gray-400" />
               </div>
               <p className="text-gray-600 text-lg sm:text-xl mb-2 font-semibold">
                 {t('admin.noFamilies')}
@@ -209,10 +209,10 @@ export default function AdminPanel() {
               {families.map((family) => (
                 <div
                   key={family.id}
-                  className="flex flex-col sm:flex-row justify-between items-start sm:items-center gap-3 p-5 bg-linear-to-r from-purple-50 to-blue-50 rounded-2xl border-2 border-purple-200 card-hover"
+                  className="flex flex-col sm:flex-row justify-between items-start sm:items-center gap-3 p-5 bg-gray-50 rounded-2xl border-2 border-gray-200 card-hover"
                 >
                   <div className="flex items-center gap-3">
-                    <div className="p-3 bg-linear-to-br from-purple-500 to-blue-500 text-white rounded-xl shadow-md">
+                    <div className="p-3 category-icon text-white rounded-xl shadow-md">
                       <Users className="w-6 h-6" />
                     </div>
                     <span className="text-lg sm:text-xl font-bold text-gray-900">
@@ -221,7 +221,7 @@ export default function AdminPanel() {
                   </div>
                   <button
                     onClick={() => handleDeleteFamily(family.id)}
-                    className="w-full sm:w-auto flex items-center justify-center gap-2 px-5 py-3 bg-red-500 hover:bg-red-600 text-white rounded-xl transition-all font-semibold shadow-md hover:shadow-lg"
+                    className="w-full sm:w-auto flex items-center justify-center gap-2 px-5 py-3 btn-danger text-white rounded-xl transition-all font-semibold shadow-md hover:shadow-lg"
                   >
                     <Trash2 className="w-5 h-5" />
                     {t('common.delete')}

frontend/src/pages/FamilyView.tsx

@@ -21,6 +21,7 @@ import {
   UserPlus,
   Copy,
   Check,
+  User,
 } from 'lucide-react';
 import ShoppingListModal from '../components/ShoppingListModal';
 
@@ -267,13 +268,22 @@ export default function FamilyView() {
     <div className="min-h-screen gradient-bg py-8 sm:py-12 px-4">
       <div className="max-w-5xl mx-auto">
         <div className="mb-6 sm:mb-8">
+          <div className="flex items-center gap-3 mb-6">
             <button
               onClick={handleOpenInviteModal}
-            className="inline-flex items-center gap-2 px-4 py-2 bg-white/20 hover:bg-white/30 text-white rounded-2xl backdrop-blur-md mb-6 transition-all duration-300 group"
+              className="inline-flex items-center gap-2 px-4 py-2 bg-white/20 hover:bg-white/30 text-white rounded-2xl backdrop-blur-md transition-all duration-300 group"
             >
               <UserPlus className="w-5 h-5 group-hover:scale-110 transition-transform" />
               <span className="font-medium">{t('family.inviteMember')}</span>
             </button>
+            <button
+              onClick={() => navigate('/profile')}
+              className="inline-flex items-center gap-2 px-4 py-2 bg-white/20 hover:bg-white/30 text-white rounded-2xl backdrop-blur-md transition-all duration-300 group"
+            >
+              <User className="w-5 h-5 group-hover:scale-110 transition-transform" />
+              <span className="font-medium">{t('profile.title')}</span>
+            </button>
+          </div>
           <div className="text-center">
             <div className="inline-flex p-4 bg-white/20 backdrop-blur-md rounded-2xl mb-4">
               <Wallet className="w-12 h-12 text-white" />
@@ -298,7 +308,7 @@ export default function FamilyView() {
               </div>
               <button
                 onClick={() => setShowShoppingList(true)}
-                className="w-full flex items-center justify-center gap-2 px-6 py-3 bg-gradient-to-r from-green-500 to-emerald-600 text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold"
+                className="w-full flex items-center justify-center gap-2 px-6 py-3 btn-success text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold"
               >
                 <ShoppingCart className="w-5 h-5" />
                 {t('family.shoppingList')}
@@ -329,7 +339,7 @@ export default function FamilyView() {
               >
                 <div className="flex items-center justify-between gap-3 mb-4">
                   <div className="flex items-center gap-3">
-                    <div className="p-2 bg-linear-to-br from-purple-500 to-blue-500 text-white rounded-xl shadow-lg">
+                    <div className="p-2 category-icon text-white rounded-xl shadow-lg">
                       <Tag className="w-6 h-6" />
                     </div>
                     <h2 className="text-xl sm:text-2xl font-bold text-gray-900">
@@ -340,7 +350,7 @@ export default function FamilyView() {
                   {showAddExpense !== category.id && (
                     <button
                       onClick={() => setShowAddExpense(category.id)}
-                      className="flex items-center gap-2 px-4 py-2 bg-linear-to-r from-red-500 to-pink-500 text-white rounded-xl hover:shadow-lg transition-all duration-300 font-semibold whitespace-nowrap text-sm"
+                      className="flex items-center gap-2 px-4 py-2 btn-danger text-white rounded-xl hover:shadow-lg transition-all duration-300 font-semibold whitespace-nowrap text-sm"
                     >
                       <TrendingDown className="w-4 h-4" />
                       <span className="hidden sm:inline">{t('category.addExpense')}</span>
@@ -397,7 +407,7 @@ export default function FamilyView() {
                 </div>
 
                 {showHistory === category.id && (
-                  <div className="mt-4 bg-linear-to-br from-blue-50 to-purple-50 p-4 rounded-2xl border-2 border-blue-200">
+                  <div className="mt-4 glass-effect p-4 rounded-2xl border-2 border-gray-200">
                     <div className="flex items-center justify-between mb-4">
                       <h3 className="font-semibold text-gray-800 text-lg flex items-center gap-2">
                         <History className="w-5 h-5" />
@@ -418,7 +428,7 @@ export default function FamilyView() {
                         {categoryExpenses.map((expense) => (
                           <div
                             key={expense.id}
-                            className="bg-white p-3 rounded-xl shadow-sm border border-gray-200"
+                            className="expense-history-item p-3 rounded-xl shadow-sm border"
                           >
                             <div className="flex justify-between items-start mb-2">
                               <div className="flex items-center gap-2">
@@ -435,7 +445,7 @@ export default function FamilyView() {
                               </div>
                             </div>
                             {expense.description && (
-                              <div className="flex items-start gap-2 text-sm text-gray-600 bg-gray-50 p-2 rounded-lg">
+                              <div className="flex items-start gap-2 text-sm text-gray-600 expense-description p-2 rounded-lg">
                                 <MessageSquare className="w-4 h-4 mt-0.5 flex-shrink-0" />
                                 <span>{expense.description}</span>
                               </div>
@@ -448,7 +458,7 @@ export default function FamilyView() {
                 )}
 
                 {showAddExpense === category.id && (
-                  <div className="bg-linear-to-br from-purple-50 to-blue-50 p-6 rounded-2xl border-2 border-purple-200">
+                  <div className="glass-effect p-6 rounded-2xl border-2 border-gray-200 mt-4">
                     <h3 className="font-semibold text-gray-800 mb-4 text-center">
                       {t('expense.addTitle')}
                     </h3>
@@ -480,7 +490,7 @@ export default function FamilyView() {
                       <div className="flex gap-3">
                         <button
                           onClick={() => handleAddExpense(category.id)}
-                          className="flex-1 flex items-center justify-center gap-2 px-5 py-3 bg-linear-to-r from-green-500 to-green-600 text-white rounded-2xl hover:shadow-xl transition-all font-semibold"
+                          className="flex-1 flex items-center justify-center gap-2 px-5 py-3 btn-success text-white rounded-2xl hover:shadow-xl transition-all font-semibold"
                         >
                           <Plus className="w-5 h-5" />
                           {t('common.add')}
@@ -502,7 +512,7 @@ export default function FamilyView() {
 
         <div className="glass-effect rounded-3xl shadow-xl p-6 sm:p-8 max-w-3xl mx-auto">
           <div className="flex items-center justify-center gap-3 mb-8">
-            <div className="p-3 bg-linear-to-br from-purple-500 to-blue-500 rounded-2xl">
+            <div className="p-3 category-icon rounded-2xl">
               <DollarSign className="w-8 h-8 text-white" />
             </div>
             <h2 className="text-2xl sm:text-3xl font-bold text-gray-800">
@@ -511,7 +521,7 @@ export default function FamilyView() {
           </div>
 
           {showAddCategory ? (
-            <div className="mb-8 p-6 bg-linear-to-br from-purple-50 to-blue-50 rounded-2xl border-2 border-purple-200">
+            <div className="mb-8 p-6 glass-effect rounded-2xl border-2 border-gray-200">
               <h3 className="font-bold text-gray-800 mb-5 text-center text-lg">
                 {t('category.newCategory')}
               </h3>
@@ -533,7 +543,7 @@ export default function FamilyView() {
                 <div className="flex gap-3">
                   <button
                     onClick={handleAddCategory}
-                    className="flex-1 flex items-center justify-center gap-2 px-6 py-4 bg-linear-to-r from-green-500 to-green-600 text-white rounded-2xl hover:shadow-xl transition-all font-semibold"
+                    className="flex-1 flex items-center justify-center gap-2 px-6 py-4 btn-success text-white rounded-2xl hover:shadow-xl transition-all font-semibold"
                   >
                     <Plus className="w-5 h-5" />
                     {t('common.create')}
@@ -550,7 +560,7 @@ export default function FamilyView() {
           ) : (
             <button
               onClick={() => setShowAddCategory(true)}
-              className="w-full flex items-center justify-center gap-2 px-6 py-4 bg-linear-to-r from-purple-600 to-blue-600 text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold"
+              className="w-full flex items-center justify-center gap-2 px-6 py-4 btn-primary text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold"
             >
               <Plus className="w-5 h-5" />
               {t('category.addCategory')}
@@ -568,10 +578,10 @@ export default function FamilyView() {
 
       {showInviteModal && (
         <div className="fixed inset-0 bg-black/60 backdrop-blur-sm flex items-center justify-center z-50 p-4">
-          <div className="bg-white rounded-3xl shadow-2xl w-full max-w-md p-6 sm:p-8">
+          <div className="glass-effect rounded-3xl shadow-2xl w-full max-w-md p-6 sm:p-8">
             <div className="flex items-center justify-between mb-6">
               <div className="flex items-center gap-3">
-                <div className="p-3 bg-gradient-to-br from-purple-500 to-blue-500 rounded-2xl">
+                <div className="p-3 category-icon rounded-2xl">
                   <UserPlus className="w-6 h-6 text-white" />
                 </div>
                 <h2 className="text-xl font-bold text-gray-800">{t('invite.title')}</h2>
@@ -592,7 +602,7 @@ export default function FamilyView() {
                 <button
                   onClick={handleCreateInviteLink}
                   disabled={inviteLoading}
-                  className="w-full flex items-center justify-center gap-2 px-6 py-4 bg-gradient-to-r from-purple-600 to-blue-600 text-white rounded-2xl hover:shadow-xl transition-all font-semibold disabled:opacity-50"
+                  className="w-full flex items-center justify-center gap-2 px-6 py-4 btn-primary text-white rounded-2xl hover:shadow-xl transition-all font-semibold disabled:opacity-50"
                 >
                   {inviteLoading ? (
                     <>
@@ -621,8 +631,8 @@ export default function FamilyView() {
                   onClick={handleCopyInviteLink}
                   className={`w-full flex items-center justify-center gap-2 px-6 py-4 rounded-2xl transition-all font-semibold ${
                     copied
-                      ? 'bg-green-500 text-white'
+                      ? 'btn-success text-white'
-                      : 'bg-gradient-to-r from-purple-600 to-blue-600 text-white hover:shadow-xl'
+                      : 'btn-primary text-white hover:shadow-xl'
                   }`}
                 >
                   {copied ? (

frontend/src/pages/InvitePage.tsx

@@ -109,15 +109,15 @@ export default function InvitePage() {
   if (error) {
     return (
       <div className="min-h-screen flex items-center justify-center gradient-bg px-4">
-        <div className="bg-white rounded-3xl shadow-2xl p-8 max-w-md w-full text-center">
+        <div className="glass-effect rounded-3xl shadow-2xl p-8 max-w-md w-full text-center">
-          <div className="p-4 bg-red-100 rounded-2xl inline-block mb-6">
+          <div className="p-4 btn-danger rounded-2xl inline-block mb-6">
-            <AlertCircle className="w-12 h-12 text-red-500" />
+            <AlertCircle className="w-12 h-12 text-white" />
           </div>
           <h1 className="text-2xl font-bold text-gray-800 mb-4">{t('common.error')}</h1>
           <p className="text-gray-600 mb-6">{error}</p>
           <button
             onClick={() => navigate('/')}
-            className="px-6 py-3 bg-gradient-to-r from-purple-600 to-blue-600 text-white rounded-2xl font-semibold hover:shadow-xl transition-all"
+            className="px-6 py-3 btn-primary text-white rounded-2xl font-semibold hover:shadow-xl transition-all"
           >
             {t('common.toHome')}
           </button>
@@ -128,14 +128,14 @@ export default function InvitePage() {
 
   return (
     <div className="min-h-screen flex items-center justify-center gradient-bg px-4">
-      <div className="bg-white rounded-3xl shadow-2xl p-8 max-w-md w-full text-center">
+      <div className="glass-effect rounded-3xl shadow-2xl p-8 max-w-md w-full text-center">
-        <div className="p-4 bg-gradient-to-br from-purple-500 to-blue-500 rounded-2xl inline-block mb-6">
+        <div className="p-4 category-icon rounded-2xl inline-block mb-6">
           <Users className="w-12 h-12 text-white" />
         </div>
         <h1 className="text-2xl font-bold text-gray-800 mb-2">
           {t('invite.pageTitle')}
         </h1>
-        <p className="text-3xl font-bold text-purple-600 mb-6">
+        <p className="text-3xl font-bold text-gray-800 mb-6">
           {familyName}
         </p>
         <p className="text-gray-600 mb-8">
@@ -143,7 +143,7 @@ export default function InvitePage() {
         </p>
         <button
           onClick={handleGoogleLogin}
-          className="w-full flex items-center justify-center gap-3 px-6 py-4 bg-gradient-to-r from-purple-600 to-blue-600 text-white rounded-2xl font-semibold hover:shadow-xl transition-all"
+          className="w-full flex items-center justify-center gap-3 px-6 py-4 btn-primary text-white rounded-2xl font-semibold hover:shadow-xl transition-all"
         >
           <UserPlus className="w-5 h-5" />
           {t('invite.loginAndJoin')}

frontend/src/pages/Login.tsx

@@ -2,6 +2,7 @@ import { useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { authApi } from '../api/client';
 import { Loader2, Wallet } from 'lucide-react';
+import { FcGoogle } from 'react-icons/fc';
 
 export default function Login() {
   const { t } = useTranslation();
@@ -27,7 +28,7 @@ export default function Login() {
       <div className="w-full max-w-md">
         <div className="glass-effect rounded-3xl shadow-2xl p-8 sm:p-10">
           <div className="flex flex-col items-center text-center mb-8">
-            <div className="p-4 bg-linear-to-br from-purple-500 to-blue-500 text-white rounded-2xl mb-4 shadow-lg">
+            <div className="p-4 category-icon text-white rounded-2xl mb-4 shadow-lg">
               <Wallet className="w-12 h-12" />
             </div>
             <h1 className="text-3xl sm:text-4xl font-bold text-gray-900 mb-2">
@@ -53,24 +54,7 @@ export default function Login() {
               <Loader2 className="w-6 h-6 animate-spin" />
             ) : (
               <>
-                <svg className="w-6 h-6" viewBox="0 0 24 24">
+                <FcGoogle className="w-6 h-6" />
-                  <path
-                    fill="#4285F4"
-                    d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"
-                  />
-                  <path
-                    fill="#34A853"
-                    d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"
-                  />
-                  <path
-                    fill="#FBBC05"
-                    d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"
-                  />
-                  <path
-                    fill="#EA4335"
-                    d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"
-                  />
-                </svg>
                 {t('login.googleButton')}
               </>
             )}

frontend/src/pages/NoFamily.tsx

@@ -118,7 +118,7 @@ export default function NoFamily() {
       <div className="w-full max-w-md">
         <div className="glass-effect rounded-3xl shadow-2xl p-8 sm:p-10">
           <div className="flex flex-col items-center text-center mb-6">
-            <div className="p-4 bg-linear-to-br from-purple-500 to-blue-500 text-white rounded-2xl mb-4 shadow-lg">
+            <div className="p-4 category-icon text-white rounded-2xl mb-4 shadow-lg">
               <Users className="w-12 h-12" />
             </div>
             <h1 className="text-2xl sm:text-3xl font-bold text-gray-900 mb-2">
@@ -186,7 +186,7 @@ export default function NoFamily() {
               <button
                 type="submit"
                 disabled={loading || !familyName.trim()}
-                className="w-full flex items-center justify-center gap-2 px-6 py-4 bg-linear-to-r from-purple-600 to-blue-600 text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold disabled:opacity-50 disabled:cursor-not-allowed"
+                className="w-full flex items-center justify-center gap-2 px-6 py-4 btn-primary text-white rounded-2xl hover:shadow-xl transition-all duration-300 font-semibold disabled:opacity-50 disabled:cursor-not-allowed"
               >
                 {loading ? (
                   <Loader2 className="w-5 h-5 animate-spin" />

frontend/src/pages/Profile.tsx

@@ -0,0 +1,375 @@
+import { useEffect, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { useTranslation } from 'react-i18next';
+import { familyApi, userApi, authApi } from '../api/client';
+import { useStore } from '../store/useStore';
+import type { Theme } from '../types';
+import {
+  User as UserIcon,
+  Users,
+  Settings,
+  AlertTriangle,
+  ArrowLeft,
+  Loader2,
+  Check,
+  Palette,
+  Languages,
+  LogOut,
+  Edit3,
+  Save,
+  X,
+} from 'lucide-react';
+
+const THEMES: { id: Theme; gradient: string }[] = [
+  { id: 'light', gradient: 'bg-gradient-to-r from-gray-100 to-gray-200' },
+  { id: 'dark', gradient: 'bg-gradient-to-r from-black to-gray-900' },
+  { id: 'sunset', gradient: 'bg-gradient-to-r from-orange-400 to-pink-500' },
+  { id: 'ocean', gradient: 'bg-gradient-to-r from-blue-400 to-cyan-500' },
+  { id: 'forest', gradient: 'bg-gradient-to-r from-green-400 to-teal-500' },
+  { id: 'purple', gradient: 'bg-gradient-to-r from-purple-500 to-pink-500' },
+];
+
+export default function Profile() {
+  const { t, i18n } = useTranslation();
+  const navigate = useNavigate();
+  const { user, selectedFamily, setSelectedFamily, setUser, preferences, setPreferences, familyMembers, setFamilyMembers } = useStore();
+
+  const [membersLoading, setMembersLoading] = useState(false);
+  const [leavingFamily, setLeavingFamily] = useState(false);
+  const [editingName, setEditingName] = useState(false);
+  const [newFamilyName, setNewFamilyName] = useState('');
+  const [savingName, setSavingName] = useState(false);
+
+  useEffect(() => {
+    if (user?.family_id) {
+      loadFamily();
+    }
+  }, [user?.family_id]);
+
+  useEffect(() => {
+    if (user?.family_id && selectedFamily) {
+      loadMembers();
+    }
+  }, [user?.family_id, selectedFamily]);
+
+  const loadFamily = async () => {
+    if (!user?.family_id) return;
+    try {
+      const response = await familyApi.getById(user.family_id);
+      setSelectedFamily(response.data);
+    } catch (err) {
+      console.error('Error loading family:', err);
+    }
+  };
+
+  const loadMembers = async () => {
+    if (!user?.family_id) return;
+    try {
+      setMembersLoading(true);
+      const response = await familyApi.getMembers(user.family_id);
+      console.log('Loaded members:', response.data);
+      setFamilyMembers(response.data);
+    } catch (err) {
+      console.error('Error loading members:', err);
+    } finally {
+      setMembersLoading(false);
+    }
+  };
+
+  const handleLeaveFamily = async () => {
+    if (!confirm(t('profile.leaveConfirm'))) return;
+
+    try {
+      setLeavingFamily(true);
+      await userApi.leaveFamily();
+
+      const meResponse = await authApi.me();
+      setUser(meResponse.data);
+      setSelectedFamily(null);
+      setFamilyMembers([]);
+
+      navigate('/');
+    } catch (err) {
+      console.error('Error leaving family:', err);
+      alert(t('profile.leaveError'));
+    } finally {
+      setLeavingFamily(false);
+    }
+  };
+
+  const handleThemeChange = (theme: Theme) => {
+    setPreferences({ theme });
+    document.documentElement.setAttribute('data-theme', theme);
+  };
+
+  const handleLocaleChange = (locale: 'ru' | 'en') => {
+    setPreferences({ locale });
+    i18n.changeLanguage(locale);
+  };
+
+  const handleStartEditName = () => {
+    setNewFamilyName(selectedFamily?.name || '');
+    setEditingName(true);
+  };
+
+  const handleSaveName = async () => {
+    if (!selectedFamily || !newFamilyName.trim()) return;
+
+    try {
+      setSavingName(true);
+      const response = await familyApi.update(selectedFamily.id, { name: newFamilyName.trim() });
+      setSelectedFamily(response.data);
+      setEditingName(false);
+    } catch (err) {
+      console.error('Error updating family name:', err);
+      alert(t('profile.renameError'));
+    } finally {
+      setSavingName(false);
+    }
+  };
+
+  const handleBack = () => {
+    if (user?.family_id) {
+      navigate(`/family/${user.family_id}`);
+    } else {
+      navigate('/');
+    }
+  };
+
+  return (
+    <div className="min-h-screen gradient-bg py-8 sm:py-12 px-4">
+      <div className="max-w-2xl mx-auto">
+        <button
+          onClick={handleBack}
+          className="inline-flex items-center gap-2 px-4 py-2 bg-white/20 hover:bg-white/30 text-white rounded-2xl backdrop-blur-md mb-6 transition-all duration-300"
+        >
+          <ArrowLeft className="w-5 h-5" />
+          <span className="font-medium">{t('common.back')}</span>
+        </button>
+
+        <div className="text-center mb-8">
+          <div className="inline-flex p-4 bg-white/20 backdrop-blur-md rounded-2xl mb-4">
+            <UserIcon className="w-12 h-12 text-white" />
+          </div>
+          <h1 className="text-4xl font-bold text-white mb-2">{t('profile.title')}</h1>
+        </div>
+
+        <div className="space-y-6">
+          <div className="glass-effect rounded-2xl shadow-lg p-6">
+            <div className="flex items-center gap-3 mb-4">
+              <div className="p-2 category-icon text-white rounded-xl">
+                <UserIcon className="w-6 h-6" />
+              </div>
+              <h2 className="text-xl font-bold text-gray-800">{t('profile.info')}</h2>
+            </div>
+            <div className="space-y-3">
+              <div className="flex justify-between items-center py-2 border-b border-gray-200">
+                <span className="text-gray-600">{t('profile.username')}</span>
+                <span className="font-medium text-gray-900">{user?.username || '-'}</span>
+              </div>
+              <div className="flex justify-between items-center py-2 border-b border-gray-200">
+                <span className="text-gray-600">{t('profile.email')}</span>
+                <span className="font-medium text-gray-900">{user?.email || '-'}</span>
+              </div>
+            </div>
+          </div>
+
+          {selectedFamily && (
+            <div className="glass-effect rounded-2xl shadow-lg p-6">
+              <div className="flex items-center gap-3 mb-4">
+                <div className="p-2 btn-success text-white rounded-xl">
+                  <Users className="w-6 h-6" />
+                </div>
+                <h2 className="text-xl font-bold text-gray-800">{t('profile.family')}</h2>
+              </div>
+
+              <div className="mb-4">
+                <div className="flex justify-between items-center py-2 border-b border-gray-200">
+                  <span className="text-gray-600">{t('profile.familyName')}</span>
+                  {editingName ? (
+                    <div className="flex items-center gap-2">
+                      <input
+                        type="text"
+                        value={newFamilyName}
+                        onChange={(e) => setNewFamilyName(e.target.value)}
+                        className="px-3 py-1 border border-gray-300 rounded-lg focus:border-purple-500 focus:ring-1 focus:ring-purple-200"
+                        autoFocus
+                      />
+                      <button
+                        onClick={handleSaveName}
+                        disabled={savingName}
+                        className="p-1.5 bg-green-500 text-white rounded-lg hover:bg-green-600 transition-colors"
+                      >
+                        {savingName ? <Loader2 className="w-4 h-4 animate-spin" /> : <Save className="w-4 h-4" />}
+                      </button>
+                      <button
+                        onClick={() => setEditingName(false)}
+                        className="p-1.5 bg-gray-200 text-gray-600 rounded-lg hover:bg-gray-300 transition-colors"
+                      >
+                        <X className="w-4 h-4" />
+                      </button>
+                    </div>
+                  ) : (
+                    <div className="flex items-center gap-2">
+                      <span className="font-medium text-gray-900">{selectedFamily.name}</span>
+                      <button
+                        onClick={handleStartEditName}
+                        className="p-1.5 text-gray-500 hover:text-purple-600 hover:bg-purple-50 rounded-lg transition-colors"
+                      >
+                        <Edit3 className="w-4 h-4" />
+                      </button>
+                    </div>
+                  )}
+                </div>
+              </div>
+
+              <div className="mb-2">
+                <h3 className="text-sm font-medium text-gray-600 mb-3">{t('profile.members')}</h3>
+                {membersLoading ? (
+                  <div className="flex items-center justify-center py-4">
+                    <Loader2 className="w-5 h-5 animate-spin text-gray-400" />
+                  </div>
+                ) : familyMembers.length === 0 ? (
+                  <div className="text-center py-4 text-gray-500 text-sm">
+                    {t('profile.noMembers') || 'Нет участников'}
+                  </div>
+                ) : (
+                  <div className="space-y-2">
+                    {familyMembers.map((member) => (
+                      <div
+                        key={member.id}
+                        className={`flex items-center justify-between p-3 rounded-xl ${member.id === user?.id ? 'member-current border' : 'bg-gray-50'}`}
+                      >
+                        <div className="flex items-center gap-2">
+                          <div className="w-8 h-8 category-icon rounded-full flex items-center justify-center text-white text-sm font-medium">
+                            {(member.username || member.email || '?')[0].toUpperCase()}
+                          </div>
+                          <span className="font-medium text-gray-800">
+                            {member.username || member.email || t('profile.unknownUser')}
+                          </span>
+                          {member.id === user?.id && (
+                            <span className="text-xs bg-purple-200 text-purple-700 px-2 py-0.5 rounded-full">
+                              {t('profile.you')}
+                            </span>
+                          )}
+                        </div>
+                        {member.is_admin && (
+                          <span className="text-xs bg-amber-100 text-amber-700 px-2 py-0.5 rounded-full">
+                            Admin
+                          </span>
+                        )}
+                      </div>
+                    ))}
+                  </div>
+                )}
+              </div>
+            </div>
+          )}
+
+          <div className="glass-effect rounded-2xl shadow-lg p-6">
+            <div className="flex items-center gap-3 mb-4">
+              <div className="p-2 btn-primary text-white rounded-xl">
+                <Settings className="w-6 h-6" />
+              </div>
+              <h2 className="text-xl font-bold text-gray-800">{t('profile.settings')}</h2>
+            </div>
+
+            <div className="space-y-6">
+              <div>
+                <div className="flex items-center gap-2 mb-3">
+                  <Languages className="w-4 h-4 text-gray-600" />
+                  <h3 className="text-sm font-medium text-gray-600">{t('profile.language')}</h3>
+                </div>
+                <div className="flex gap-3">
+                  <button
+                    onClick={() => handleLocaleChange('ru')}
+                    className={`flex-1 py-3 px-4 rounded-xl font-medium transition-all ${
+                      preferences.locale === 'ru'
+                        ? 'btn-primary text-white shadow-lg'
+                        : 'bg-gray-100 text-gray-700 hover:bg-gray-200'
+                    }`}
+                  >
+                    <span className="mr-2">🇷🇺</span>
+                    Русский
+                    {preferences.locale === 'ru' && <Check className="w-4 h-4 inline ml-2" />}
+                  </button>
+                  <button
+                    onClick={() => handleLocaleChange('en')}
+                    className={`flex-1 py-3 px-4 rounded-xl font-medium transition-all ${
+                      preferences.locale === 'en'
+                        ? 'btn-primary text-white shadow-lg'
+                        : 'bg-gray-100 text-gray-700 hover:bg-gray-200'
+                    }`}
+                  >
+                    <span className="mr-2">🇬🇧</span>
+                    English
+                    {preferences.locale === 'en' && <Check className="w-4 h-4 inline ml-2" />}
+                  </button>
+                </div>
+              </div>
+
+              <div>
+                <div className="flex items-center gap-2 mb-3">
+                  <Palette className="w-4 h-4 text-gray-600" />
+                  <h3 className="text-sm font-medium text-gray-600">{t('profile.theme')}</h3>
+                </div>
+                <div className="grid grid-cols-3 gap-3">
+                  {THEMES.map((theme) => (
+                    <button
+                      key={theme.id}
+                      onClick={() => handleThemeChange(theme.id)}
+                      className={`relative p-1 rounded-xl transition-all ${
+                        preferences.theme === theme.id
+                          ? 'ring-2 ring-purple-500 ring-offset-2'
+                          : 'hover:scale-105'
+                      }`}
+                    >
+                      <div className={`h-12 rounded-lg ${theme.gradient}`} />
+                      <span className="text-xs text-gray-600 mt-1 block">{t(`profile.themes.${theme.id}`)}</span>
+                      {preferences.theme === theme.id && (
+                        <div className="absolute top-2 right-2 w-5 h-5 bg-white rounded-full flex items-center justify-center shadow">
+                          <Check className="w-3 h-3 text-purple-600" />
+                        </div>
+                      )}
+                    </button>
+                  ))}
+                </div>
+              </div>
+            </div>
+          </div>
+
+          {selectedFamily && (
+            <div className="glass-effect rounded-2xl shadow-lg p-6 border-2 border-red-200">
+              <div className="flex items-center gap-3 mb-4">
+                <div className="p-2 btn-danger text-white rounded-xl">
+                  <AlertTriangle className="w-6 h-6" />
+                </div>
+                <h2 className="text-xl font-bold text-gray-800">{t('profile.dangerZone')}</h2>
+              </div>
+
+              <p className="text-gray-600 mb-4">{t('profile.leaveDescription')}</p>
+
+              <button
+                onClick={handleLeaveFamily}
+                disabled={leavingFamily}
+                className="w-full flex items-center justify-center gap-2 px-6 py-3 btn-danger text-white rounded-xl transition-all font-semibold disabled:opacity-50"
+              >
+                {leavingFamily ? (
+                  <>
+                    <Loader2 className="w-5 h-5 animate-spin" />
+                    {t('profile.leaving')}
+                  </>
+                ) : (
+                  <>
+                    <LogOut className="w-5 h-5" />
+                    {t('profile.leaveFamily')}
+                  </>
+                )}
+              </button>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/store/useStore.ts

@@ -1,5 +1,11 @@
 import { create } from 'zustand';
-import type { Family, Category, User } from '../types';
+import type { Family, Category, User, FamilyMember, Theme, Locale } from '../types';
+
+const getStoredPreferences = () => {
+  const theme = (localStorage.getItem('theme') as Theme) || 'light';
+  const locale = (localStorage.getItem('locale') as Locale) || 'ru';
+  return { theme, locale };
+};
 
 interface AppState {
   user: User | null;
@@ -8,12 +14,16 @@ interface AppState {
   selectedFamily: Family | null;
   families: Family[];
   categories: Category[];
+  familyMembers: FamilyMember[];
+  preferences: { theme: Theme; locale: Locale };
 
   setUser: (user: User | null) => void;
   setIsLoading: (loading: boolean) => void;
   setSelectedFamily: (family: Family | null) => void;
   setFamilies: (families: Family[]) => void;
   setCategories: (categories: Category[]) => void;
+  setFamilyMembers: (members: FamilyMember[]) => void;
+  setPreferences: (prefs: Partial<{ theme: Theme; locale: Locale }>) => void;
   logout: () => void;
 }
 
@@ -24,6 +34,8 @@ export const useStore = create<AppState>((set) => ({
   selectedFamily: null,
   families: [],
   categories: [],
+  familyMembers: [],
+  preferences: getStoredPreferences(),
 
   setUser: (user) => set({ user, isAuthenticated: !!user }),
 
@@ -35,11 +47,21 @@ export const useStore = create<AppState>((set) => ({
 
   setCategories: (categories) => set({ categories }),
 
+  setFamilyMembers: (familyMembers) => set({ familyMembers }),
+
+  setPreferences: (prefs) => set((state) => {
+    const newPrefs = { ...state.preferences, ...prefs };
+    if (prefs.theme) localStorage.setItem('theme', prefs.theme);
+    if (prefs.locale) localStorage.setItem('locale', prefs.locale);
+    return { preferences: newPrefs };
+  }),
+
   logout: () => set({
     user: null,
     isAuthenticated: false,
     selectedFamily: null,
     families: [],
-    categories: []
+    categories: [],
+    familyMembers: [],
   }),
 }));

frontend/src/types/index.ts

@@ -130,3 +130,22 @@ export interface JoinFamilyResponse {
   family_id: number;
   message: string;
 }
+
+export type Theme = 'light' | 'dark' | 'sunset' | 'ocean' | 'forest' | 'purple';
+export type Locale = 'ru' | 'en';
+
+export interface FamilyMember {
+  id: number;
+  username: string | null;
+  email: string | null;
+  is_admin: boolean;
+}
+
+export interface UserPreferences {
+  theme: Theme;
+  locale: Locale;
+}
+
+export interface LeaveFamilyResponse {
+  family_deleted: boolean;
+}