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README.cargo.md

@@ -0,0 +1,63 @@
+# Ticketsystem
+
+A ticket system with backend and frontend components.
+
+## Components
+
+- **[Backend](../backend/index.html)** - The server-side API and business logic
+- **[Frontend](../frontend/index.html)** - The client-side user interface
+
+## Usage
+### Prerequisite
+#### IMPORTANT
+Before compiling the programm you have to install the rust toolchain. 
+For a guide to do this, visit: <https://rust-lang.org/tools/install/>
+
+A instance of a postgresql has to be accessible to the backend. Place the connection details in a .env file into the variable `DATABASE_URL`
+To setup the tables you either can create them manually by following the sheme specified in `backend/migrations` or apply them with sqlx
+To install sqlx run `cargo install sqlx` and then in the `backend` directory run `sqlx migrate run` to create the tables
+
+### Environment
+The .env file has to be in the root directory of the project or in the same directory as the executable
+
+Keys:
+`DATABASE_URL`: Specifying the url and connection details for the database
+`TOKEN_SECRET`: The JWT token secret, can theoretically be anything but is more secure when generated with a tool, e.g: <https://jwtsecrets.com/>
+`ORIGIN`: The origin of the frontend, used for CORS rules
+`BACKEND_PORT`: The port which the backend should use to run on
+
+### Backend
+The backend can either be run via `cargo run --release` or `cargo build --release` using the correct target architecture, e.g. 'x86_64-unknown-linux-gnu', 
+the executable will be placed in the `target/release` directory and can then be run via any method
+
+### Frontend
+The HTML code for the frontend can be generated by using `trunk build`. The resulting files will end up in the `frontend/dist` directory and can be served over any webserver supporting wasm
+#### NOTE
+To install trunk run `cargo install trunk`
+
+#### IMPORTANT
+Requests from the frontend to /api/* have to be proxied to the Backend
+Example with nginx and frontend running at localhost:8000 and backend at localhost:9000 :
+```nginx
+location /api/ {
+  proxy_pass http://localhost:9000/api;
+}
+```
+
+
+## Usage of AI
+
+Github Copilot CLI was used with the model Claude Haiku 4.5 to generate most of the documentation
+
+Google Antigravity generated the Sequence Diagrams
+
+### Prompt 
+Generate comments for cargo doc describing the indivilual components and create links to relevant structs, functions etc.
+
+Generate a sequence diagramm in @[README.md] behind the class diagramms
+
+### Output
+The comments with `///` or `//!`
+I've gone over it and modified it to my needs and opinions
+
+The general structure sequence diagrams above. I've modified and fixed any errors and discrepancys 

README.md

@@ -4,5 +4,382 @@ A ticket system with backend and frontend components.
 
 ## Components
 
-- **[Backend](../backend/index.html)** - The server-side API and business logic
+- **[Backend]** - The server-side API and business logic
-- **[Frontend](../frontend/index.html)** - The client-side user interface
+- **[Frontend]** - The client-side user interface
+
+## Usage
+### Prerequisite
+> [!IMPORTANT]
+> Before compiling the programm you have to install the rust toolchain. 
+> For a guide to do this, visit: <https://rust-lang.org/tools/install/>
+
+A instance of a postgresql has to be accessible to the backend. Place the connection details in a .env file into the variable `DATABASE_URL`
+To setup the tables you either can create them manually by following the sheme specified in `backend/migrations` or apply them with sqlx
+To install sqlx run `cargo install sqlx` and then in the `backend` directory run `sqlx migrate run` to create the tables
+
+### Environment
+The .env file has to be in the root directory of the project or in the same directory as the executable
+
+Keys:
+`DATABASE_URL`: Specifying the url and connection details for the database
+`TOKEN_SECRET`: The JWT token secret, can theoretically be anything but is more secure when generated with a tool, e.g: <https://jwtsecrets.com/>
+`ORIGIN`: The origin of the frontend, used for CORS rules
+`BACKEND_PORT`: The port which the backend should use to run on
+
+### Backend
+The backend can either be run via `cargo run --release` or `cargo build --release` using the correct target architecture, e.g. 'x86_64-unknown-linux-gnu', 
+the executable will be placed in the `target/release` directory and can then be run via any method
+
+### Frontend
+The HTML code for the frontend can be generated by using `trunk build`. The resulting files will end up in the `frontend/dist` directory and can be served over any webserver supporting wasm
+> [!NOTE]
+> To install trunk run `cargo install trunk`
+
+> [!IMPORTANT]
+> Requests from the frontend to /api/* have to be proxied to the Backend
+> Example with nginx and frontend running at localhost:8000 and backend at localhost:9000 :
+> ```nginx
+> location /api/ {
+>   proxy_pass http://localhost:9000/api;
+> }
+> ```
+
+## Diagrams
+### Class Diagramm
+#### Backend
+```mermaid
+classDiagram
+    class Error {
+        +status: &'static str
+        +message: String
+    }
+    class TicketResponse {
+        +id: i32
+        +category: String
+        +betreff: String
+        +description: String
+        +room: i16
+        +status: String
+        +date: chrono::DateTime~chrono::Utc~
+        +user_id: i16
+        +user_first_name: String
+        +user_last_name: String
+    }
+    class User {
+        +id: i16
+        +last_name: String
+        +first_name: String
+        +username: String
+        +is_admin: bool
+        +pwd: String
+    }
+    class TicketCreateScheme {
+        +category: String
+        +betreff: String
+        +description: String
+        +room: i16
+    }
+    class TicketUpdateScheme {
+        +status: String
+    }
+    class UserUpdateScheme {
+        +id: i16
+        +first_name: String
+        +last_name: String
+        +username: String
+        +make_admin: bool
+        +new_pwd: String
+    }
+    class UserCreateScheme {
+        +first_name: String
+        +last_name: String
+        +username: String
+        +is_admin: bool
+        +pwd: String
+    }
+    class LoginScheme {
+        +username: String
+        +pwd: String
+    }
+    class FilteredUser {
+        +id: i16
+        +first_name: String
+        +last_name: String
+        +username: String
+        +is_admin: bool
+    }
+    class Claims {
+        +sub: String
+        +issued: usize
+        +expires: usize
+    }
+    class AppState {
+        -db: PgPool
+        -env: Env
+    }
+    class Env {
+        +db_url: String
+        +token_secret: String
+        +origin: String
+        +backend_port: String
+        +load() Env
+    }
+    AppState --> Env
+    Env ..> Env
+```
+
+#### Frontend
+```mermaid
+classDiagram
+    class TicketCreateScheme {
+        +category: String
+        +betreff: String
+        +description: String
+        +room: i16
+    }
+    class TicketUpdateScheme {
+        +status: String
+    }
+    class Ticket {
+        +id: i32
+        +category: String
+        +betreff: String
+        +description: String
+        +room: i16
+        +status: String
+        +date: chrono::DateTime~chrono::Utc~
+        +user_id: i16
+        +user_first_name: String
+        +user_last_name: String
+    }
+    class TicketProps {
+        +id: i32
+    }
+    class ActiveUser {
+        +id: Option~i16~
+        +is_admin: bool
+    }
+    class ApiError {
+        -message: String
+        -_status: String
+    }
+    class SidebarExpandState {
+        +ticket_open: bool
+        +users_open: bool
+    }
+    class Default {
+        +default() Self
+    }
+    class SidebarState {
+        +expand: SidebarExpandState
+        +set_tickets_open: Callback~bool~
+        +toggle_tickets: Callback~()~
+        +set_users_open: Callback~bool~
+        +toggle_users: Callback~()~
+        +new(expand:SidebarExpandState, set_tickets_open:Callback~bool~, toggle_tickets:Callback~()~, set_users_open:Callback~bool~, toggle_users:Callback~()~) Self
+    }
+    class SidebarProps {
+        +children: Children
+    }
+    class TicketPartial {
+        -date: DateTime~Utc~
+        -room: i16
+        -user_id: i16
+    }
+    class UserPartial {
+        -id: i16
+        -first_name: String
+        -last_name: String
+    }
+    class RoomTotalsProps {
+        -tickets: Vec~TicketPartial~
+    }
+    class UserTotalProps {
+        -users: Vec~UserPartial~
+        -tickets: Vec~TicketPartial~
+    }
+    class AdminSetupScheme {
+        +first_name: String
+        +last_name: String
+        +username: String
+        +pwd: String
+    }
+    class UserCreateScheme {
+        +first_name: String
+        +last_name: String
+        +username: String
+        +is_admin: bool
+        +pwd: String
+    }
+    class LoginScheme {
+        +username: String
+        +pwd: String
+    }
+    class UserUpdateScheme {
+        +id: i16
+        +first_name: String
+        +last_name: String
+        +username: String
+        +make_admin: bool
+        +new_pwd: String
+    }
+    class FilteredUser {
+        +id: i16
+        +first_name: String
+        +last_name: String
+        +username: String
+        +is_admin: bool
+    }
+    class UserProps {
+        +id: i16
+    }
+    class ApiError {
+        -message: String
+        -_status: String
+    }
+    class AuthState {
+        +is_authenticated: Option~bool~
+        +is_admin: Option~bool~
+    }
+    class ProtectedRouteProps {
+        +children: Children
+        +admin_page: bool
+    }
+    class SidebarShellProps {
+        +children: Children
+    }
+    class SidebarComponentProps {
+        +is_open: bool
+        +on_close: Callback~()~
+    }
+    class AdminCheckWrapperProps {
+        +children: Children
+    }
+    SidebarState --> SidebarExpandState
+    RoomTotalsProps --> TicketPartial
+    UserTotalProps --> UserPartial
+    UserTotalProps --> TicketPartial
+    SidebarShellProps ..> SidebarComponentProps
+
+```
+
+### Sequence Diagrams
+#### 1. System Initialization & Administrator Setup
+
+```mermaid
+sequenceDiagram
+    autonumber
+    actor Admin as Initial Administrator
+    participant FE as Frontend (Yew)
+    participant BE as Backend (Axum)
+    participant DB@{"type": "database", "alias": "Database"}
+
+    Note over Admin, DB: System Initialization Flow
+    FE->>BE: GET /api/check-admin
+    BE->>DB: SELECT COUNT(*) FROM users WHERE is_admin = true
+    DB-->>BE: 0 (No admin found)
+    BE-->>FE: HTTP 200 OK {"exists": false}
+    FE-->>Admin: Render Admin Setup Page
+    Admin->>FE: Input username, password, first/last name
+    FE->>BE: POST /api/setup-admin {username, pwd, ...}
+    Note over BE: Hash password using Argon2
+    BE->>DB: INSERT INTO users (username, pwd, is_admin, ...)
+    DB-->>BE: Success
+    BE-->>FE: HTTP 200 OK {"status": "success"}
+    FE-->>Admin: Redirect to Login Page
+```
+
+#### 2. User Authentication Flow (Login)
+
+```mermaid
+sequenceDiagram
+    autonumber
+    actor User 
+    participant FE as Frontend (Yew)
+    participant BE as Backend (Axum)
+    participant DB as Database@{"type": "database"}
+
+    Note over User, DB: Authentication & Cookie Session Setup
+    User->>FE: Enter username & password
+    FE->>BE: POST /api/login {username, pwd}
+    BE->>DB: SELECT * FROM users WHERE username = $1
+    DB-->>BE: Return user record with password hash
+    Note over BE: Verify password using Argon2
+    alt Password Valid
+        Note over BE: Generate JWT token containing claims (sub: user_id)
+        Note over BE: Build HttpOnly, Secure, Lax cookie 'token'
+        
+        BE-->>FE: HTTP 200 OK {"status": "success", "token": "...", "user": {...}}
+        Note over BE,FE: Header: Set-Cookie: token=...#59; Path=/#59; HttpOnly#59; SameSite=Lax
+ 
+        Note over FE: Save auth state to global context
+        FE-->>User: Redirect to Dashboard / Home
+    else Password Invalid
+        BE-->>FE: HTTP 400 Bad Request {"status": "error", "message": "Invalid password"}
+        FE-->>User: Display error message
+    end
+```
+
+#### 3. Ticket Lifecycle Flow
+
+```mermaid
+sequenceDiagram
+    autonumber
+    actor User as Authenticated User
+    actor Admin as Administrator
+    participant FE as Frontend (Yew)
+    participant BE as Backend (Axum)
+    participant DB as Database@{"type": "database"}
+
+    Note over User, DB: Ticket Creation Flow (Protected Route)
+    User->>FE: Fill out ticket form & submit
+    FE->>BE: POST /api/tickets/create {category, betreff, description, room} (Includes 'token' cookie)
+    Note over BE: validate_token middleware decodes & verifies JWT
+    BE->>DB: INSERT INTO tickets (category, description, betreff, room, user_id)
+    DB-->>BE: Success
+    BE-->>FE: HTTP 200 OK {"status": "success"}
+    FE-->>User: Clear form & display success notification
+
+    Note over Admin, DB: Ticket Review & Resolution (Admin Only Route)
+    Admin->>FE: View Ticket Board
+    FE->>BE: GET /api/tickets (Includes 'token' cookie)
+    Note over BE: validate_token middleware checks JWT
+    BE->>DB: SELECT tickets JOIN users ...
+    DB-->>BE: Return list of tickets
+    BE-->>FE: HTTP 200 OK [tickets]
+    FE-->>Admin: Render Ticket List
+    
+    Admin->>FE: Click "Resolve" on ticket
+    FE->>BE: PATCH /api/tickets/{id} {"status": "Resolved"} (Includes 'token' cookie)
+    Note over BE: validate_admin middleware verifies token & checks is_admin = true
+    BE->>DB: UPDATE tickets SET status = $1 WHERE id = $2
+    DB-->>BE: Success
+    BE-->>FE: HTTP 200 OK {"status": "success"}
+    FE-->>Admin: Update ticket status in UI
+
+    Note over Admin, DB: Ticket Archiving Flow (Admin Only Route)
+    Admin->>FE: Open Archived Tickets page
+    FE->>BE: GET /api/tickets/archive (Includes 'token' cookie)
+    Note over BE: validate_admin middleware verifies token & admin role
+    BE->>DB: SELECT * FROM tickets WHERE status = 'Archived'
+    DB-->>BE: Return archived tickets
+    BE-->>FE: HTTP 200 OK [Archived Tickets]
+    FE-->>Admin: Render historical archive board
+```
+
+## Usage of AI
+
+Github Copilot CLI was used with the model Claude Haiku 4.5 to generate most of the documentation
+
+Google Antigravity generated the Sequence Diagrams
+
+### Prompt 
+Generate comments for cargo doc describing the indivilual components and create links to relevant structs, functions etc.
+
+Generate a sequence diagramm in @[README.md] behind the class diagramms
+
+### Output
+The comments with `///` or `//!`
+I've gone over it and modified it to my needs and opinions
+
+The general structure sequence diagrams above. I've modified and fixed any errors and discrepancys 

backend/src/cookie/jwt.rs

@@ -6,8 +6,8 @@ use crate::models::Claims;
 
 /// Error response for JWT token operations.
 ///
-/// Returned when token encoding or decoding fails. Used in error responses
+/// Returned when token encoding or decoding fails via `encode_token` or `decode_token`.
-/// for invalid or expired tokens.
+/// Used in error responses for invalid or expired [`Claims`] tokens.
 ///
 /// # Fields
 /// - `status`: HTTP status text (e.g., "error")
@@ -22,7 +22,7 @@ pub struct Error {
 ///
 /// This function creates a new JWT with the provided user ID as the subject,
 /// sets the issued-at and expiration times (60 minutes from now), and signs it
-/// using the given encoding key.
+/// using the given encoding key. The resulting token is a serialized [`Claims`].
 ///
 /// # Arguments
 /// - `header`: The JWT header, specifying the algorithm (e.g., HS256).
@@ -30,7 +30,7 @@ pub struct Error {
 /// - `key`: The `EncodingKey` used to sign the JWT.
 ///
 /// # Returns
-/// A `String` representing the encoded JWT.
+/// A `String` representing the encoded JWT containing [`Claims`].
 ///
 /// # Panics
 /// Panics if the token encoding fails for any reason (e.g., invalid key).
@@ -50,14 +50,15 @@ pub fn encode_token(header: &Header, id: String, key: &EncodingKey) -> String {
 ///
 /// This function attempts to decode a JWT string, validate its signature and claims
 /// using the provided decoding key. It specifically ignores expiration (`validate_exp`)
-/// and "not before" (`validate_nbf`) claims during validation.
+/// and "not before" (`validate_nbf`) claims during validation. Returns the extracted [`Claims`]
+/// on success.
 ///
 /// # Arguments
 /// - `token`: The JWT string to decode.
 /// - `key`: The `DecodingKey` used to verify the JWT's signature.
 ///
 /// # Returns
-/// - `Ok(Claims)`: If the token is successfully decoded and verified, returns the extracted `Claims`.
+/// - `Ok(Claims)`: If the token is successfully decoded and verified, returns the extracted [`Claims`].
 /// - `Err((StatusCode, Json<Error>))`: If the token is invalid, expired, or cannot be decoded,
 ///   returns an `UNAUTHORIZED` status code along with a JSON error message.
 pub fn decode_token(token: String, key: &DecodingKey) -> Result<Claims, (StatusCode, Json<Error>)> {

backend/src/cookie/validation.rs

@@ -17,9 +17,10 @@ use crate::{AppState, cookie::jwt::decode_token, handlers::auth::filter_user, mo
 /// Axum middleware to validate a JWT token present in cookies or Authorization header.
 ///
 /// This function extracts a JWT from the request (either from the `token` cookie or
-/// the `Authorization: Bearer` header), decodes and validates it. If valid, it fetches
+/// the `Authorization: Bearer` header), decodes and validates it using [`decode_token`](`crate::cookie::jwt::decode_token`)).
-/// the corresponding user from the database and inserts a `FilteredUser` into the
+/// If valid, it fetches the corresponding [`User`] from the database and inserts a
-/// request extensions for subsequent handlers to use.
+/// [`FilteredUser`](crate::models::FilteredUser)
+/// (converted via [`filter_user`](`crate::handlers::auth::filter_user`)) into the request extensions for subsequent handlers to use.
 ///
 /// If the token is missing, invalid, or the user is not found, it returns an
 /// appropriate error response (401 Unauthorized).
@@ -110,9 +111,10 @@ pub async fn validate_token(
 
 /// Axum middleware to validate JWT token and ensure the authenticated user has admin privileges.
 ///
-/// This middleware first performs all checks of `validate_token`: extracting, decoding,
+/// This middleware first performs all checks of [`validate_token`]: extracting, decoding,
-/// and validating the JWT, and fetching the associated user from the database.
+/// and validating the JWT via [`decode_token`](`crate::cookie::jwt::decode_token`), and fetching the associated [`User`] from the database.
-/// Additionally, it verifies that the fetched user has `is_admin` set to `true`.
+/// Additionally, it verifies that the fetched user has `is_admin` set to `true`. Returns a [`FilteredUser`](crate::models::FilteredUser)
+/// (converted via [`filter_user`](`crate::handlers::auth::filter_user`)) in the request extensions if both authentication and admin status are valid.
 ///
 /// If the user is not authenticated or not an administrator, it returns an
 /// appropriate error response (401 Unauthorized or 403 Forbidden).

backend/src/env.rs

@@ -1,12 +1,13 @@
 /// Environment configuration for the application.
 ///
 /// Loads required configuration from environment variables at startup.
-/// All variables must be present or the application will panic.
+/// All variables must be present or the application will panic during [`Env::load`].
+/// Used by [`AppState`](crate::AppState) for configuring JWT signing and CORS.
 ///
 /// # Fields
-/// - `db_url`: PostgreSQL database connection URL.
+/// - `db_url`: PostgreSQL database connection URL
-/// - `token_secret`: Secret key used to sign and verify JWT tokens.
+/// - `token_secret`: Secret key used to sign and verify [`Claims`](crate::models::Claims) in JWT tokens
-/// - `origin`: Frontend origin URL for CORS policy.
+/// - `origin`: Frontend origin URL for CORS policy configuration
 ///
 /// # Required Environment Variables
 /// - `DATABASE_URL`: PostgreSQL connection string (e.g., `postgresql://user:pass@localhost/dbname`)
@@ -25,12 +26,20 @@ pub struct Env {
 impl Env {
     /// Loads environment configuration from system environment variables.
     ///
-    /// Panics if any required variable is missing.
+    /// Reads `DATABASE_URL`, `TOKEN_SECRET`, and `ORIGIN` from the environment and returns
+    /// a configured [`Env`] instance. Used during server initialization in the `main` function.
+    ///
+    /// # Panics
+    /// If any required variable is missing (DATABASE_URL, TOKEN_SECRET, or ORIGIN).
     ///
     /// # Example
     /// ```ignore
     /// let env = Env::load();
     /// // Environment must have DATABASE_URL, TOKEN_SECRET, and ORIGIN set
+    /// let app_state = AppState {
+    ///     db: pool,
+    ///     env,
+    /// };
     /// ```
     pub fn load() -> Env {
         let db_url = std::env::var("DATABASE_URL").expect("DATABASE_URL must be set");

backend/src/handlers/auth.rs

@@ -22,11 +22,12 @@ use crate::{
 
 /// Registers a new user in the system.
 ///
-/// Creates a new user account with the provided credentials. The password is hashed using Argon2
+/// Creates a new [`User`] account with the provided [`UserCreateScheme`] credentials.
-/// before being stored. Only administrators can create new users.
+/// The password is hashed using Argon2 before being stored. Only administrators can create new users.
 ///
 /// # Arguments
-/// - `request`: User creation details including first/last name, username, admin flag, and password
+/// - `State(data)`: Application state containing [`AppState`] for database access
+/// - `request`: [`UserCreateScheme`] containing user details including first/last name, username, admin flag, and password
 ///
 /// # Returns
 /// - `200 OK` on successful user creation
@@ -34,12 +35,7 @@ use crate::{
 /// - `500 Internal Server Error` if database insertion fails
 ///
 /// # Password Hashing
-/// Uses Argon2 with a cryptographically secure random salt:
+/// Uses Argon2 with a cryptographically secure random salt.
-/// ```ignore
-/// let argon = Argon2::default();
-/// let salt = SaltString::generate(&mut OsRng);
-/// let hashed_pwd = argon.hash_password(password.as_bytes(), &salt)?;
-/// ```
 pub async fn create_user(
     State(data): State<Arc<AppState>>,
     Json(request): Json<UserCreateScheme>,
@@ -106,27 +102,23 @@ pub async fn create_user(
 /// Authenticates a user and creates a JWT token for session management.
 ///
 /// Verifies the provided username and password against stored credentials using Argon2 verification.
-/// On successful authentication, generates a JWT token and sets it as an HTTP-only cookie.
+/// On successful authentication, generates and encodes a [`Claims`](crate::models::Claims) token via [`encode_token`](`crate::cookie::jwt::encode_token`) and sets it as an HTTP-only cookie.
 /// The token is valid for 1 hour.
 ///
 /// # Arguments
-/// - `request`: Login credentials (username, password)
+/// - `State(data)`: Application state containing [`AppState`] for database access
+/// - `request`: [`LoginScheme`] containing login credentials (username, password)
 ///
 /// # Returns
-/// - `200 OK` with JSON containing token and filtered user info
+/// - `200 OK` with JSON containing token and filtered [`FilteredUser`] info
 /// - `400 Bad Request` if username not found or password invalid
 /// - `500 Internal Server Error` if database query fails
 ///
 /// # Security Features
 /// - HTTP-only cookie prevents JavaScript access
 /// - SameSite=Lax protects against CSRF attacks
-/// - Password verification uses Argon2:
+/// - Password verification uses Argon2 with stored [`User`] hash
-///   ```ignore
+/// - JWT token includes user ID and expiration timestamp via [`Claims`](crate::models::Claims) encoded by [`encode_token`](`crate::cookie::jwt::encode_token`)
-///   let valid_pwd = Argon2::default()
-///       .verify_password(&request.pwd.as_bytes(), &pwd_hash.unwrap())
-///       .is_ok();
-///   ```
-/// - JWT token includes user ID and expiration timestamp
 ///
 /// # Example Response
 /// ```json
@@ -195,7 +187,7 @@ pub async fn login(
 ///
 /// Sets the authentication cookie to expire immediately (max_age = -1 hour) which causes
 /// the browser to discard it. This effectively logs the user out without requiring server-side
-/// session invalidation.
+/// session invalidation. The cookie no longer contains a valid [`Claims`](crate::models::Claims) token.
 ///
 /// # Returns
 /// Always returns `200 OK` with success message and an expired cookie header
@@ -227,11 +219,11 @@ pub async fn logout() -> Result<impl IntoResponse, (StatusCode, Json<serde_json:
 
 /// Retrieves the currently authenticated user's information.
 ///
-/// Uses the user data embedded in the JWT token (via middleware).
+/// Uses the [`FilteredUser`] data embedded in the JWT token (via middleware).
 /// Useful for frontends to display logged-in user info or verify authentication.
 ///
 /// # Returns
-/// - `200 OK` with user data (excluding password)
+/// - `200 OK` with [`FilteredUser`] data (excluding password)
 /// - Automatically returns `401 Unauthorized` if not authenticated (middleware)
 ///
 /// # Example Response
@@ -264,11 +256,12 @@ pub async fn get_current_user(
 
 /// Deletes a user account from the system.
 ///
-/// Only admins can delete users. The user account and all associated data is removed.
+/// Only admins can delete users (enforced by middleware). The [`User`] account and all associated data is removed.
 /// Note: Tickets created by deleted users will have NULL user_id references.
 ///
 /// # Arguments
-/// - `id`: User ID to delete
+/// - `Path(id)`: [`User`] ID to delete, extracted from URL path
+/// - `State(data)`: Application state containing [`AppState`] for database access
 ///
 /// # Returns
 /// - `204 No Content` on successful deletion
@@ -302,11 +295,14 @@ pub async fn delete_user(
 
 /// Retrieves all users in the system.
 ///
-/// Only admins can call this endpoint. Returns all users sorted alphabetically by last name.
+/// Only admins can call this endpoint (enforced by middleware). Returns all [`User`] records converted to [`FilteredUser`]
-/// Password hashes are not included in the response.
+/// and sorted alphabetically by last name. Password hashes are not included in the response.
+///
+/// # Arguments
+/// - `State(data)`: Application state containing [`AppState`] for database access
 ///
 /// # Returns
-/// - `200 OK` with array of FilteredUser objects
+/// - `200 OK` with array of [`FilteredUser`] objects
 /// - `500 Internal Server Error` if database query fails
 ///
 /// # Example Response
@@ -352,15 +348,15 @@ pub async fn get_users(
 
 /// Retrieves a single user's details by their ID.
 ///
-/// This endpoint allows fetching a specific user's information. It returns a `FilteredUser`
+/// This endpoint allows fetching a specific [`User`]'s information. It returns a [`FilteredUser`]
-/// object, ensuring sensitive data like password hashes are not exposed.
+/// object (converted via [`filter_user`]), ensuring sensitive data like password hashes are not exposed.
 ///
 /// # Arguments
-/// - `Path(id)`: The ID of the user to retrieve, extracted from the URL path.
+/// - `Path(id)`: The ID of the [`User`] to retrieve, extracted from the URL path.
-/// - `State(data)`: Application state containing `AppState` for database access.
+/// - `State(data)`: Application state containing [`AppState`] for database access.
 ///
 /// # Returns
-/// - `200 OK` with a `FilteredUser` JSON object if the user is found.
+/// - `200 OK` with a [`FilteredUser`] JSON object if the user is found.
 /// - `404 Not Found` if a user with the given ID does not exist.
 /// - `500 Internal Server Error` if a database query error occurs.
 ///
@@ -396,23 +392,24 @@ pub async fn get_user_by_id(
 
 /// Updates an existing user's information.
 ///
-/// This endpoint allows administrators to modify a user's `first_name`, `last_name`,
+/// This endpoint allows administrators to modify a [`User`]'s `first_name`, `last_name`,
 /// `username`, `is_admin` status, and optionally their password. If `new_pwd` in the
 /// request body is an empty string, the user's password remains unchanged.
 ///
 /// # Arguments
-/// - `Path(id)`: The ID of the user to update, extracted from the URL path.
+/// - `Path(id)`: The ID of the [`User`] to update, extracted from the URL path.
-/// - `State(data)`: Application state containing `AppState` for database access.
+/// - `State(data)`: Application state containing [`AppState`] for database access.
-/// - `Json(body)`: `UserUpdateScheme` containing the fields to update.
+/// - `Json(body)`: [`UserUpdateScheme`] containing the fields to update.
 ///
 /// # Returns
-/// - `200 OK` with the `FilteredUser` object of the updated user.
+/// - `200 OK` with the [`FilteredUser`] object of the updated user (converted via [`filter_user`]).
 /// - `404 Not Found` if a user with the given ID does not exist.
 /// - `500 Internal Server Error` if a database query or password hashing error occurs.
 ///
 /// # Security Note
 /// - Passwords are hashed using Argon2 before storage.
-/// - This endpoint typically requires admin privileges (enforced by middleware).
+/// - This endpoint requires admin privileges (enforced by middleware via
+///   [`validate_admin`](crate::cookie::validation::validate_admin)).
 pub async fn update_user(
     Path(id): Path<i16>,
     State(data): State<Arc<AppState>>,
@@ -482,7 +479,10 @@ pub async fn update_user(
 /// Checks if any administrator user exists in the system.
 ///
 /// This endpoint is used during initialization to determine if the setup page should be displayed.
-/// It counts all users with `is_admin = true` in the database.
+/// It counts all [`User`] records with `is_admin = true` in the database.
+///
+/// # Arguments
+/// - `State(data)`: Application state containing [`AppState`] for database access
 ///
 /// # Returns
 /// - `200 OK` with JSON: `{"has_admin": bool}` - Whether at least one admin exists
@@ -512,28 +512,24 @@ pub async fn check_admin_exists(
 
 /// Creates the initial administrator account for a fresh system.
 ///
-/// This function handles the one-time setup of the first admin user. It checks that no admin exists
+/// This function handles the one-time setup of the first admin [`User`]. It checks that no admin exists
-/// before allowing creation. This endpoint is only functional when the system has no administrators.
+/// before allowing creation via database count. This endpoint is only functional when the system has no administrators.
 /// Once created, subsequent admin registrations must go through the normal `create_user` endpoint
 /// with proper authorization.
 ///
 /// # Arguments
-/// - `request`: User creation details (first_name, last_name, username, password)
+/// - `State(data)`: Application state containing [`AppState`] for database access
+/// - `request`: [`UserCreateScheme`] containing user creation details (first_name, last_name, username, password)
 ///
 /// # Returns
 /// - `200 OK` with success message if admin account created
 /// - `400 Bad Request` if:
-///   - Admin already exists
+///   - Admin already exists (checked via admin count)
 ///   - Username or password is empty
 /// - `500 Internal Server Error` if database insertion fails
 ///
 /// # Security Note
-/// The password is hashed using Argon2 with a random salt before storage:
+/// The password is hashed using Argon2 with a random salt before storage.
-/// ```ignore
-/// let argon = Argon2::default();
-/// let salt = SaltString::generate(&mut OsRng);
-/// let hashed_pwd = argon.hash_password(request.pwd.as_bytes(), &salt)?;
-/// ```
 pub async fn setup_initial_admin(
     State(data): State<Arc<AppState>>,
     Json(request): Json<UserCreateScheme>,
@@ -598,17 +594,18 @@ pub async fn setup_initial_admin(
     }
 }
 
-/// Converts a User with sensitive data into a FilteredUser safe for API responses.
+/// Converts a [`User`] with sensitive data into a [`FilteredUser`] safe for API responses.
 ///
 /// This function removes password hashes and other sensitive information before
-/// returning user data to clients. Always use this helper instead of directly
+/// returning [`User`] data to clients. Always use this helper instead of directly
-/// serializing User objects.
+/// serializing [`User`] objects.
+/// Used by all authentication endpoints to ensure passwords are never exposed.
 ///
 /// # Arguments
-/// - `user`: Reference to the internal User struct containing password hash
+/// - `user`: Reference to the internal [`User`] struct containing password hash
 ///
 /// # Returns
-/// FilteredUser with only safe-to-share information:
+/// [`FilteredUser`] with only safe-to-share information:
 /// - `id`: User ID
 /// - `first_name`, `last_name`: User name
 /// - `username`: Login username
@@ -621,7 +618,7 @@ pub async fn setup_initial_admin(
 /// # Example
 /// ```ignore
 /// let user = get_user_from_db(1).await?;
-/// let safe_user = filter_user(&user);
+/// let safe_user = filter_user(&user);  // Convert User to FilteredUser
 /// // safe_user can be safely serialized and sent to client
 /// ```
 pub fn filter_user(user: &User) -> FilteredUser {

backend/src/handlers/ticket.rs

@@ -16,12 +16,14 @@ use crate::{
 
 /// Creates a new support ticket.
 ///
-/// Associates the ticket with the authenticated user and sets the current timestamp.
+/// Associates the ticket with the authenticated [`FilteredUser`] and sets the current timestamp.
+/// Converts the [`TicketCreateScheme`] request into a database record.
 /// Tickets are automatically created with "open" status.
 ///
 /// # Arguments
-/// - `user`: Authenticated user (extracted from JWT token)
+/// - `Extension(user)`: Authenticated [`FilteredUser`] (extracted from JWT token via middleware)
-/// - `body`: Ticket details (category, subject, description, room)
+/// - `State(data)`: Application state containing [`AppState`] for database access
+/// - `Json(body)`: [`TicketCreateScheme`] containing ticket details (category, subject, description, room)
 ///
 /// # Returns
 /// - `200 OK` on successful creation
@@ -60,10 +62,11 @@ pub async fn create_ticket(
 
 /// Deletes a ticket by ID.
 ///
-/// Only admins can delete tickets. Marks the ticket as deleted or removes from database.
+/// Only admins can delete tickets (enforced by middleware). Removes the [`TicketResponse`] and associated data from the database.
 ///
 /// # Arguments
-/// - `id`: Ticket ID to delete
+/// - `Path(id)`: Ticket ID to delete, extracted from URL path
+/// - `State(data)`: Application state containing [`AppState`] for database access
 ///
 /// # Returns
 /// - `204 No Content` on successful deletion
@@ -97,15 +100,18 @@ pub async fn delete_ticket(
 
 /// Retrieves all non-archived tickets.
 ///
-/// Returns a list of all active tickets with user information denormalized for easier rendering.
+/// Returns a list of all active [`TicketResponse`] objects with user information denormalized for easier rendering.
-/// Tickets are ordered by creation date (newest first).
+/// Tickets are ordered by creation date (newest first). Joins with [`User`](crate::models::User) table to include creator information.
+///
+/// # Arguments
+/// - `State(data)`: Application state containing [`AppState`] for database access
 ///
 /// # Filtering
 /// - Excludes tickets with status "Archived"
-/// - Uses LEFT JOIN to include creator information
+/// - Uses LEFT JOIN to include creator information from [`User`](crate::models::User)
 ///
 /// # Returns
-/// - `200 OK` with array of TicketResponse objects
+/// - `200 OK` with array of [`TicketResponse`] objects
 /// - `500 Internal Server Error` if database query fails
 ///
 /// # Example Response
@@ -169,12 +175,14 @@ pub async fn get_tickets(
 /// Retrieves a specific ticket by ID.
 ///
 /// Includes full ticket details and denormalized user information (creator name).
+/// Returns a [`TicketResponse`] with all metadata by joining with [`User`](crate::models::User) table.
 ///
 /// # Arguments
-/// - `id`: Ticket ID to retrieve
+/// - `Path(id)`: Ticket ID to retrieve, extracted from URL path
+/// - `State(data)`: Application state containing [`AppState`] for database access
 ///
 /// # Returns
-/// - `200 OK` with TicketResponse object
+/// - `200 OK` with [`TicketResponse`] object
 /// - `404 Not Found` if ticket doesn't exist
 /// - `500 Internal Server Error` if database error occurs
 ///
@@ -242,15 +250,16 @@ pub async fn get_ticket_by_id(
 
 /// Updates a ticket's status.
 ///
-/// Only admins can update ticket status. This is typically used to transition tickets
+/// Only admins can update ticket status (enforced by middleware). Applies [`TicketUpdateScheme`] to modify the [`TicketResponse`].
-/// through their lifecycle (open → in_progress → resolved → archived).
+/// This is typically used to transition tickets through their lifecycle (open → in_progress → resolved → archived).
 ///
 /// # Arguments
-/// - `id`: Ticket ID to update
+/// - `Path(id)`: Ticket ID to update, extracted from URL path
-/// - `body`: Update payload containing new status
+/// - `State(data)`: Application state containing [`AppState`] for database access
+/// - `Json(body)`: [`TicketUpdateScheme`] update payload containing new status
 ///
 /// # Returns
-/// - `200 OK` with updated TicketResponse
+/// - `200 OK` with updated [`TicketResponse`]
 /// - `500 Internal Server Error` if ticket not found or database error
 ///
 /// # Typical Status Flow

backend/src/main.rs

@@ -25,11 +25,12 @@ use crate::env::Env;
 /// Shared application state passed to all route handlers.
 ///
 /// Contains the database connection pool and environment configuration.
-/// This is wrapped in Arc for thread-safe sharing across async tasks.
+/// This is wrapped in Arc for thread-safe sharing across async tasks and cloned into each route
+/// via `with_state`.
 ///
 /// # Fields
-/// - `db`: PostgreSQL connection pool for database access
+/// - `db`: PostgreSQL connection pool for database access (via `sqlx::PgPool`)
-/// - `env`: Configuration loaded from environment variables
+/// - `env`: [`Env`] configuration loaded from environment variables
 pub struct AppState {
     db: PgPool,
     env: Env,
@@ -39,15 +40,19 @@ pub struct AppState {
 ///
 /// Initializes the server by:
 /// 1. Loading environment variables from `.env` file
-/// 2. Establishing database connection pool
+/// 2. Establishing database connection pool to PostgreSQL
 /// 3. Configuring CORS policy for cross-origin requests
-/// 4. Starting HTTP server on port 8001
+/// 4. Creating the router with [`create_router`] containing all endpoints
+/// 5. Starting HTTP server on port 8001
 ///
 /// # Server Configuration
 /// - Binds to `0.0.0.0:8001` (all network interfaces)
 /// - Allows: GET, POST, PATCH, DELETE methods
 /// - Allows credentials and custom headers
-/// - CORS origin configured from environment
+/// - CORS origin configured from [`Env`]
+///
+/// # State Setup
+/// Creates shared [`AppState`] wrapped in `Arc` and passes to all routes
 ///
 /// # Panics
 /// - If environment loading fails

backend/src/models.rs

@@ -3,6 +3,7 @@ use serde::{Deserialize, Serialize};
 /// API response for a ticket with user information.
 ///
 /// Returned by ticket endpoints. Includes denormalized user data for easier frontend rendering.
+/// Created via [`TicketCreateScheme`].
 ///
 /// # Fields
 /// - `id`: Unique ticket identifier
@@ -12,7 +13,7 @@ use serde::{Deserialize, Serialize};
 /// - `room`: Room number associated with the issue
 /// - `status`: Current ticket status (e.g., "open", "in_progress", "resolved")
 /// - `date`: When the ticket was created (UTC timestamp)
-/// - `user_id`: ID of the user who created the ticket
+/// - `user_id`: ID of the user who created the ticket (references [`User`])
 /// - `user_first_name`, `user_last_name`: User's name (denormalized for convenience)
 ///
 /// # Example
@@ -47,7 +48,7 @@ pub struct TicketResponse {
 /// Complete user record from the database.
 ///
 /// Contains all user information including the password hash.
-/// This should NEVER be sent directly to clients - always use `FilteredUser` instead.
+/// This should NEVER be sent directly to clients - always use [`FilteredUser`] instead.
 ///
 /// # Fields
 /// - `id`: Unique user identifier
@@ -58,7 +59,7 @@ pub struct TicketResponse {
 ///
 /// # Security Note
 /// The `pwd` field contains the password hash and should never be included in API responses.
-/// Use `filter_user()` to convert to `FilteredUser` for responses.
+/// Use [`filter_user()`](`crate::handlers::auth::filter_user`) to convert to [`FilteredUser`] for responses.
 #[derive(Deserialize, Serialize, PartialEq, Debug, Clone, sqlx::FromRow)]
 pub struct User {
     pub id: i16,
@@ -72,7 +73,7 @@ pub struct User {
 /// Payload for creating a new ticket.
 ///
 /// Sent to `/api/tickets/create`. The backend automatically associates it with the
-/// authenticated user and sets the creation timestamp.
+/// authenticated user and sets the creation timestamp. Converted to [`TicketResponse`] for the response.
 ///
 /// # Fields
 /// - `category`: Ticket category/type
@@ -89,7 +90,7 @@ pub struct TicketCreateScheme {
 
 /// Payload for updating a ticket.
 ///
-/// Sent to `PATCH /api/tickets/{id}`. Currently only allows status updates.
+/// Sent to `PATCH /api/tickets/{id}`. Allows updating the ticket [`TicketResponse::status`].
 /// Only admins can update tickets.
 ///
 /// # Fields
@@ -102,10 +103,10 @@ pub struct TicketUpdateScheme {
 /// Payload for updating user information.
 ///
 /// Sent to `PATCH /api/users/{id}`. Allows updating profile and admin status.
-/// Only admins can update users. Empty password field means no password change.
+/// Only admins can update [`User`] records. Empty password field means no password change.
 ///
 /// # Fields
-/// - `id`: User ID to update
+/// - `id`: [`User`] ID to update
 /// - `first_name`, `last_name`: Updated user name
 /// - `username`: Updated login username
 /// - `make_admin`: New admin privilege status
@@ -123,7 +124,7 @@ pub struct UserUpdateScheme {
 /// Payload for creating a new user account.
 ///
 /// Used in both admin registration (`/api/register`) and initial setup (`/api/setup-admin`).
-/// The password is hashed server-side before storage using Argon2.
+/// The password is hashed server-side before storage using Argon2. Converted to [`User`] for storage.
 ///
 /// # Fields
 /// - `first_name`: User's first name
@@ -155,7 +156,7 @@ pub struct LoginScheme {
 
 /// User information sent to clients, excluding password hashes.
 ///
-/// This is the safe version of User data that gets returned in API responses.
+/// This is the safe version of [`User`] data that gets returned in API responses.
 /// It never includes the password hash or JWT claims. Always use this for responses
 /// to prevent leaking sensitive data.
 #[derive(Debug, Clone, Serialize)]
@@ -170,10 +171,10 @@ pub struct FilteredUser {
 /// JWT token claims embedded in the session token.
 ///
 /// Contains user identification and token validity information.
-/// Generated during login and verified by middleware on protected routes.
+/// Generated during login via `encode_token` and verified via `decode_token`.
 ///
 /// # Fields
-/// - `sub`: Subject - the user ID as a string
+/// - `sub`: Subject - the user ID as a string (references [`User`])
 /// - `issued`: Unix timestamp when token was created
 /// - `expires`: Unix timestamp when token expires (currently 1 hour from creation)
 ///

backend/src/router.rs

@@ -19,30 +19,31 @@ use crate::{
 
 /// Creates the complete router with all API endpoints.
 ///
-/// The router is organized in layers for proper middleware application:
+/// The router is organized in layers for proper middleware application. Uses [`AppState`]
+/// for shared application context across all routes.
 ///
 /// ## Route Layers (from most to least restricted):
 ///
 /// ### Admin-Only Routes (requires admin privilege + valid token)
-/// - `GET /api/tickets/{id}` - Get specific ticket details
+/// - `GET /api/tickets/{id}` - Get specific ticket details (via `get_ticket_by_id`)
-/// - `DELETE /api/tickets/{id}` - Delete a ticket
+/// - `DELETE /api/tickets/{id}` - Delete a ticket (via `delete_ticket`)
-/// - `PATCH /api/tickets/{id}` - Update ticket status
+/// - `PATCH /api/tickets/{id}` - Update ticket status (via `edit_ticket`)
-/// - `POST /api/register` - Create a new user
+/// - `POST /api/register` - Create a new user (via `create_user`)
-/// - `GET /api/users` - List all users
+/// - `GET /api/users` - List all users (via `get_users`)
-/// - `GET /api/users/{id}` - Get user details
+/// - `GET /api/users/{id}` - Get user details (via `get_user_by_id`)
-/// - `DELETE /api/users/{id}` - Delete a user
+/// - `DELETE /api/users/{id}` - Delete a user (via `delete_user`)
-/// - `PATCH /api/users/{id}` - Update user details
+/// - `PATCH /api/users/{id}` - Update user details (via `update_user`)
 ///
 /// ### Protected Routes (requires valid token)
-/// - `GET /api/tickets` - List all tickets
+/// - `GET /api/tickets` - List all tickets (via `get_tickets`)
-/// - `POST /api/tickets/create` - Create a new ticket
+/// - `POST /api/tickets/create` - Create a new ticket (via `create_ticket`)
-/// - `GET /api/logout` - Logout user
+/// - `GET /api/logout` - Logout user (via `logout`)
-/// - `GET /api/users/current` - Get current authenticated user
+/// - `GET /api/users/current` - Get current authenticated user (via `get_current_user`)
 ///
 /// ### Public Routes (no authentication required)
-/// - `POST /api/login` - User login
+/// - `POST /api/login` - User login (via `login`)
-/// - `GET /api/check-admin` - Check if admin exists (for setup detection)
+/// - `GET /api/check-admin` - Check if admin exists (via `check_admin_exists`)
-/// - `POST /api/setup-admin` - Create initial admin account (only if no admin exists)
+/// - `POST /api/setup-admin` - Create initial admin account (via `setup_initial_admin`)
 ///
 /// # Middleware Stack
 /// - Admin routes have `validate_admin` middleware

frontend/src/auth.rs

@@ -33,14 +33,14 @@ pub struct ProtectedRouteProps {
 
 /// A component that protects routes by enforcing authentication and optional administrator privileges.
 ///
-/// This component fetches the current user's authentication and admin status from the
+/// This component uses the backend's validation middleware by fetching the current user's authentication
-/// `/api/users/current` endpoint upon mounting. Based on the `AuthState` and the
+/// and admin status from the `/api/users/current` endpoint (which requires a valid JWT token).
-/// `admin_page` property, it either renders its children or redirects the user.
+/// Based on the [`AuthState`] and the `admin_page` property, it either renders its children or redirects the user.
 ///
 /// # Behavior
-/// - **Initial Load**: Displays "Loading..." while checking authentication status.
+/// - **Initial Load**: Displays "Loading..." while checking authentication status via the backend.
 /// - **Not Authenticated**: Redirects to the login page (`crate::Route::Login`).
-/// - **Authenticated**:
+/// - **Authenticated** (valid JWT token from backend):
 ///   - If `admin_page` is `true`:
 ///     - If the user is an administrator (`is_admin: Some(true)`), it renders `children`.
 ///     - If the user is not an administrator (`is_admin: Some(false)`), it redirects to

frontend/src/lib.rs

@@ -10,7 +10,9 @@ use yew_router::prelude::*;
 /// Defines the application's various routes and their corresponding paths.
 ///
 /// This enum is used by `yew-router` to map URLs to specific components,
-/// enabling navigation within the single-page application.
+/// enabling navigation within the single-page application. Each route is protected
+/// by [`ProtectedRoute`] middleware where appropriate to enforce authentication and authorization.
+/// See [`switch`] for the routing logic.
 #[derive(Clone, PartialEq, Routable)]
 enum Route {
     /// The application's home page.
@@ -65,10 +67,17 @@ pub struct SidebarShellProps {
 /// A shell component that provides a consistent layout with a sidebar and a main content area.
 ///
 /// This component is designed to wrap page-specific content, ensuring that the sidebar
-/// is always present for navigation.
+/// is always present for navigation. Integrates with [`crate::pages::sidebar::Sidebar`] for navigation.
+///
+/// # Mobile Support
+/// On mobile displays, the sidebar is hidden by default and can be toggled:
+/// - **Menu Toggle Button**: Renders a floating menu button to slide the sidebar open.
+/// - **Dark Mode Toggle**: Floating button to change theme.
+/// - **Overlay Backdrop**: Dims the screen when the sidebar is open. Clicking it closes the sidebar.
+/// - **Auto-Close on Navigation**: Automatically closes the sidebar when navigating to a new route.
 ///
 /// # Components
-/// - [`sidebar::Sidebar`]: The navigation sidebar component.
+/// - [`crate::pages::sidebar::Sidebar`]: The navigation sidebar component, accepting mobile open state.
 /// - Main content area: Renders the `children` passed to this component.
 ///
 /// # Example
@@ -81,9 +90,46 @@ pub struct SidebarShellProps {
 /// ```
 #[component(SidebarShell)]
 fn sidebar_shell(props: &SidebarShellProps) -> Html {
+    let route = use_route::<Route>();
+    let mobile_sidebar_open = use_state(|| false);
+
+    // Close mobile sidebar automatically on any route transition
+    {
+        let mobile_sidebar_open = mobile_sidebar_open.clone();
+        use_effect_with(route, move |_| {
+            mobile_sidebar_open.set(false);
+            || ()
+        });
+    }
+
+    let on_open = {
+        let mobile_sidebar_open = mobile_sidebar_open.clone();
+        Callback::from(move |_: MouseEvent| mobile_sidebar_open.set(true))
+    };
+
+    let on_close = {
+        let mobile_sidebar_open = mobile_sidebar_open.clone();
+        Callback::from(move |_: ()| mobile_sidebar_open.set(false))
+    };
+
+    let on_close_click = {
+        let on_close = on_close.clone();
+        Callback::from(move |_: MouseEvent| on_close.emit(()))
+    };
+
     html! {
         <div class="layout">
-            <sidebar::Sidebar/>
+            <button class="mobile-menu-toggle" onclick={on_open}>
+                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                    <line x1="4" x2="20" y1="12" y2="12"/>
+                    <line x1="4" x2="20" y1="6" y2="6"/>
+                    <line x1="4" x2="20" y1="18" y2="18"/>
+                </svg>
+            </button>
+
+            <div class={if *mobile_sidebar_open { "sidebar-overlay open" } else { "sidebar-overlay" }} onclick={on_close_click}></div>
+
+            <sidebar::Sidebar is_open={*mobile_sidebar_open} on_close={on_close} />
             <main class="content">
                 { for props.children.iter() }
             </main>
@@ -91,6 +137,7 @@ fn sidebar_shell(props: &SidebarShellProps) -> Html {
     }
 }
 
+
 /// Props for the AdminCheckWrapper component.
 #[derive(Properties, PartialEq)]
 pub struct AdminCheckWrapperProps {
@@ -101,11 +148,11 @@ pub struct AdminCheckWrapperProps {
 ///
 /// This component is used to gate access to pages that should only be accessible before
 /// system initialization (e.g., login page). It performs an asynchronous check to the
-/// `/api/check-admin` endpoint to determine system state.
+/// backend's `/api/check-admin` endpoint (via `crate::handlers::auth::check_admin_exists`) to determine system state.
 ///
 /// # Behavior
-/// - **Loading**: Displays "Loading..." while checking admin status
+/// - **Loading**: Displays "Loading..." while checking admin status from the backend
-/// - **No Admin**: Automatically redirects to `/setup` page to initialize
+/// - **No Admin**: Automatically redirects to [`Route::Setup`] page for initialization
 /// - **Admin Exists**: Renders the wrapped children (e.g., login page)
 ///
 /// # Example Usage
@@ -115,19 +162,9 @@ pub struct AdminCheckWrapperProps {
 /// </AdminCheckWrapper>
 /// ```
 ///
-/// # Implementation Detail
+/// # Backend Integration
-/// The check happens in `use_effect_with` on component mount:
+/// The check queries the backend's `/api/check-admin` endpoint which returns `{"has_admin": bool}`.
-/// ```ignore
+/// This allows the frontend to determine if initial admin setup is required.
-/// spawn_local(async move {
-///     match Request::get("/api/check-admin").send().await {
-///         Ok(resp) if resp.status() == 200 => {
-///             let has_admin = data["has_admin"].as_bool().unwrap_or(false);
-///             admin_exists.set(Some(has_admin));
-///         }
-///         _ => admin_exists.set(Some(false))
-///     }
-/// });
-/// ```
 #[component(AdminCheckWrapper)]
 fn admin_check_wrapper(props: &AdminCheckWrapperProps) -> Html {
     let admin_exists = use_state(|| None::<bool>);
@@ -166,18 +203,24 @@ fn admin_check_wrapper(props: &AdminCheckWrapperProps) -> Html {
 
 /// The main routing logic for the application.
 ///
-/// This function takes a `Route` enum variant and returns the corresponding HTML
+/// This function takes a [`Route`] enum variant and returns the corresponding HTML
 /// content to be rendered. It acts as a central dispatcher for the application's
-/// navigation.
+/// navigation and authentication flow.
 ///
-/// Many routes are wrapped in a [`ProtectedRoute`] to enforce authentication
+/// Most routes are wrapped in [`ProtectedRoute`] to enforce authentication
-/// and authorization, and in a [`SidebarShell`] to maintain consistent layout.
+/// and authorization based on the `admin_page` flag, and in [`SidebarShell`] to maintain consistent layout.
+/// Login and Setup routes use [`AdminCheckWrapper`] instead to handle pre-authentication states.
 ///
 /// # Arguments
 /// - `route`: The [`Route`] enum variant representing the current URL path.
 ///
 /// # Returns
 /// An `Html` component that should be rendered for the given route.
+///
+/// # Route Protection
+/// - **Admin-required routes** (`admin_page={true}`): Require both authentication and admin privileges
+/// - **Public routes** (`admin_page={false}`): Require only authentication
+/// - **Pre-auth routes** (`AdminCheckWrapper`): Used before admin creation or login
 fn switch(route: Route) -> Html {
     match route {
         Route::Home => html! {
@@ -259,12 +302,16 @@ fn switch(route: Route) -> Html {
 /// The root component of the Yew application.
 ///
 /// This component sets up the application's routing using `yew-router`'s
-/// [`BrowserRouter`] and [`Switch`] components. All other application content
+/// `BrowserRouter` and `Switch` components. All other application content
-/// is rendered based on the current route.
+/// is rendered based on the current [`Route`] matched by the `switch` function.
+///
+/// Uses [`switch`] as the routing dispatcher to handle all route-specific rendering,
+/// which applies appropriate middleware like [`ProtectedRoute`] and [`AdminCheckWrapper`].
 ///
 /// # Structure
-/// - [`BrowserRouter`]: Enables client-side routing.
+/// - `BrowserRouter`: Enables client-side routing.
-/// - [`Switch`]: Renders components based on the matched [`Route`].
+/// - `Switch`: Renders components based on the matched [`Route`].
+/// - `switch` function: Determines which component to render for each route.
 #[component(App)]
 pub fn app() -> Html {
     html! {

frontend/src/pages/basic_pages.rs

@@ -3,6 +3,29 @@ use wasm_bindgen_futures::spawn_local;
 use yew::prelude::*;
 use yew_router::prelude::*;
 
+/// Removes surrounding double quotes from a string.
+///
+/// This macro takes an expression that evaluates to a string and returns a new `String`
+/// with any leading or trailing double quotes removed. It's useful for cleaning up
+/// string data that might be inadvertently wrapped in quotes, such as JSON string values.
+///
+/// # Arguments
+///
+/// * `$str`: An expression that can be converted into a string slice (`&str`).
+///
+/// # Examples
+///
+/// ```rust
+/// use your_crate::dequote; // Assuming `dequote` is re-exported or in scope
+///
+/// let quoted_string = "\"hello world\"";
+/// let dequoted_string = dequote!(quoted_string);
+/// assert_eq!(dequoted_string, "hello world");
+///
+/// let already_clean = "no quotes";
+/// let dequoted_clean = dequote!(already_clean);
+/// assert_eq!(dequoted_clean, "no quotes");
+/// ```
 macro_rules! dequote {
     ($str:expr) => {
         $str.trim_matches('"').to_string()

frontend/src/pages/setup.rs

@@ -29,7 +29,7 @@ pub struct AdminSetupScheme {
 /// a form to create the first admin user. Key functionality:
 ///
 /// - **Admin Check**: On mount, verifies if an admin already exists by calling `/api/check-admin`.
-///   If an admin is found, the user is redirected to the login page (`crate::Route::Login`).
+///   If an admin is found, the user is redirected to the login page ([`crate::Route::Login`]).
 /// - **Form Fields**: Collects `first_name`, `last_name`, `username`, `password`, and `confirm_password`.
 /// - **Form Validation**:
 ///   - Ensures password fields are not empty.

frontend/src/pages/sidebar.rs

@@ -7,6 +7,11 @@ use wasm_bindgen_futures::spawn_local;
 use yew::prelude::*;
 use yew_router::prelude::*;
 
+/// The key used to store and retrieve the sidebar's expansion state in `LocalStorage`.
+///
+/// This constant ensures consistency when accessing the stored state across different
+/// parts of the application. The value associated with this key in `LocalStorage`
+/// will be a serialized [`SidebarExpandState`] object.
 const STORAGE_KEY: &str = "sidebar_state";
 
 /// Represents the expansion state of collapsible menus within the sidebar.
@@ -128,7 +133,7 @@ pub fn sidebar_state_provider(props: &SidebarProps) -> Html {
         Callback::from(move |v: bool| {
             state.set(SidebarExpandState {
                 ticket_open: v,
-                users_open: (*state).users_open,
+                users_open: state.users_open,
             })
         })
     };
@@ -136,10 +141,10 @@ pub fn sidebar_state_provider(props: &SidebarProps) -> Html {
     let toggle_tickets = {
         let state = state.clone();
         Callback::from(move |_| {
-            let current = (*state).ticket_open;
+            let current = state.ticket_open;
             state.set(SidebarExpandState {
                 ticket_open: !current,
-                users_open: (*state).users_open,
+                users_open: state.users_open,
             });
         })
     };
@@ -148,7 +153,7 @@ pub fn sidebar_state_provider(props: &SidebarProps) -> Html {
         let state = state.clone();
         Callback::from(move |v: bool| {
             state.set(SidebarExpandState {
-                ticket_open: (*state).ticket_open,
+                ticket_open: state.ticket_open,
                 users_open: v,
             })
         })
@@ -157,9 +162,9 @@ pub fn sidebar_state_provider(props: &SidebarProps) -> Html {
     let toggle_users = {
         let state = state.clone();
         Callback::from(move |_| {
-            let current = (*state).users_open;
+            let current = state.users_open;
             state.set(SidebarExpandState {
-                ticket_open: (*state).ticket_open,
+                ticket_open: state.ticket_open,
                 users_open: !current,
             });
         })
@@ -314,6 +319,11 @@ pub fn users_menu() -> Html {
 /// and administrative status. It fetches the current user's details via `/api/users/current`
 /// to determine what menu items to display.
 ///
+/// # Mobile Support
+/// On small screens:
+/// - Slides into view from the left when `props.is_open` is `true`.
+/// - Renders a close button (`✕`) in the header that emits `props.on_close`.
+///
 /// # Structure
 /// - Wraps its content in a [`SidebarStateProvider`] to allow nested menus to manage their state.
 /// - Contains a navigation (`<nav>`) element with an unordered list (`<ul>`) of menu items.
@@ -332,8 +342,22 @@ pub fn users_menu() -> Html {
 /// # Logout Functionality
 /// The "Logout" button sends a GET request to `/api/logout`, clears the user's session,
 /// and then redirects the user to the login page (`crate::Route::Login`).
+/// Properties for the [`Sidebar`] component.
+///
+/// These properties enable managing and controlling the responsive mobile sidebar
+/// layout and its visibility settings.
+#[derive(Properties, PartialEq)]
+pub struct SidebarComponentProps {
+    /// A boolean flag indicating whether the mobile sidebar is currently slid open (`true`) or hidden (`false`).
+    #[prop_or_default]
+    pub is_open: bool,
+    /// A callback emitted when the user requests to close/hide the mobile sidebar.
+    #[prop_or_default]
+    pub on_close: Callback<()>,
+}
+
 #[component(Sidebar)]
-pub fn sidebar() -> Html {
+pub fn sidebar(props: &SidebarComponentProps) -> Html {
     let is_admin = use_state(|| None::<bool>);
     let navigator = use_navigator().expect("Sidebar must be used within a Router");
 
@@ -374,34 +398,65 @@ pub fn sidebar() -> Html {
     };
 
     match *is_admin {
-        None => html! { <div class="sidebar-loading">{ "Loading..." }</div> },
+        None => html! { <div class="sidebar-loading">{ "Lade..." }</div> },
 
         // Non-admin: render a condensed user sidebar (no diagnostics, limited links)
-        Some(false) => html! {
+        Some(false) => {
+            let on_close = props.on_close.clone();
+            html! {
                 <SidebarStateProvider>
-                <nav class="sidebar user">
+                    <nav class={if props.is_open { "sidebar user open" } else { "sidebar user" }}>
                         <ul>
-                        <Link<crate::Route> to={crate::Route::Home}>{ "󰟒" }</Link<crate::Route>>
+                            <li class="sidebar-header">
+                                <Link<crate::Route> to={crate::Route::Home} classes="home">
+                                    <svg xmlns="http://www.w3.org/2000/svg" class="home-svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                                        <path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/>
+                                        <polyline points="9 22 9 12 15 12 15 22"/>
+                                    </svg>
+                                </Link<crate::Route>>
+                                <button class="sidebar-close" onclick={move |_| on_close.emit(())}>
+                                    <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                                        <line x1="18" y1="6" x2="6" y2="18"/>
+                                        <line x1="6" y1="6" x2="18" y2="18"/>
+                                    </svg>
+                                </button>
+                            </li>
                             <TicketMenu/>
                             <li class="logout-item">
                                 <button
                                     class="logout-button"
                                     onclick={on_logout.clone()}
                                 >
-                                { "Logout" }
+                                    { "Abmelden" }
                                 </button>
                             </li>
                         </ul>
                     </nav>
                 </SidebarStateProvider>
+            }
         },
 
         // Admin: full sidebar wrapped in provider so submenu state persists
-        Some(true) => html! {
+        Some(true) => {
+            let on_close = props.on_close.clone();
+            html! {
                 <SidebarStateProvider>
-                <nav class="sidebar admin">
+                    <nav class={if props.is_open { "sidebar admin open" } else { "sidebar admin" }}>
                         <ul>
-                        <Link<crate::Route> to={crate::Route::Home}>{ "󰟒" }</Link<crate::Route>>
+                            <li class="sidebar-header">
+                                <Link<crate::Route> to={crate::Route::Home} classes="home">
+                                    <svg xmlns="http://www.w3.org/2000/svg" class="home-svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                                        <path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/>
+                                        <polyline points="9 22 9 12 15 12 15 22"/>
+                                    </svg>
+                                </Link<crate::Route>>
+                                <button class="sidebar-close" onclick={move |_| on_close.emit(())}>
+                                    <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                                        <line x1="18" y1="6" x2="6" y2="18"/>
+                                        <line x1="6" y1="6" x2="18" y2="18"/>
+                                    </svg>
+                                </button>
+                            </li>
                             <TicketMenu/>
                             <UsersMenu/>
                             <Link<crate::Route> to={crate::Route::Diagnostics}>{ "Statistiken" }</Link<crate::Route>>
@@ -411,12 +466,13 @@ pub fn sidebar() -> Html {
                                     class="logout-button"
                                     onclick={on_logout.clone()}
                                 >
-                                { "Logout" }
+                                    { "Abmelden" }
                                 </button>
                             </li>
                         </ul>
                     </nav>
                 </SidebarStateProvider>
+            }
         },
     }
 }

frontend/src/pages/ticket.rs

@@ -313,7 +313,7 @@ pub fn submit_ticket_component() -> Html {
             {
                 if !room_valid {
                     html! {
-                        <p style="color: red;">{ "Ungültiger oder nicht erlaubter Raum (z. B. 101, K12, D5)" }</p>
+                        <p class="warning" >{ "Ungültiger / nicht erlaubter Raum (z. B. 101, K12, D5)" }</p>
                     }
                 } else {
                     html! {}
@@ -807,9 +807,9 @@ pub fn archived_tickets_component() -> Html {
         html! { <p>{ format!("Error: {}", e) }</p> }
     } else {
         html! {
-            <ul>
+            <ul class="postits">
             { for tickets.iter().filter(|t| t.status == "Archived" && (user.is_admin || if let Some(uid) = user.id { t.user_id == uid } else { false })).map(|t| html! {
-                    <div>
+                    <div class="listbox">
                         <li key={t.id.to_string()}>
                             <Link<crate::Route> to={crate::Route::TicketById{id: t.id}}><h3>{ format!("{} - #{}", t.betreff, t.id) }</h3></Link<crate::Route>>
                             <p>{ &t.description }</p>

frontend/src/pages/user.rs

@@ -102,6 +102,14 @@ pub struct UserProps {
     pub id: i16,
 }
 
+/// Represents an error response from the API.
+///
+/// This struct is used to deserialize error messages received from the backend API.
+/// It typically contains a human-readable message and an internal status code.
+///
+/// # Fields
+/// - `message`: A `String` containing a description of the error.
+/// - `_status`: An internal status code or message, often ignored in frontend display.
 #[derive(Deserialize, Debug)]
 struct ApiError {
     message: String,
@@ -425,7 +433,7 @@ pub fn all_users_component() -> Html {
         html! { <p>{ format!("Error: {}", e) }</p> }
     } else {
         html! {
-            <ul class="posti8s">
+            <ul class="postits">
             { for users.iter().map(|t| html! {
                     <li key={t.id.to_string()} class="listbox">
                         <Link<crate::Route> to={crate::Route::UserByID{id: t.id}}><h3>{ format!("{} {}- #{}", t.first_name, t.last_name, t.id) }</h3></Link<crate::Route>>

frontend/src/pages/utilities.rs

@@ -28,7 +28,7 @@ struct TicketPartial {
 /// for calculating and visualizing ticket distribution per room.
 ///
 /// # Fields
-/// - `tickets`: A vector of `TicketPartial` containing ticket data relevant for room totals.
+/// - `tickets`: A vector of [`TicketPartial`] containing ticket data relevant for room totals.
 #[derive(Properties, PartialEq)]
 struct RoomTotalsProps {
     tickets: Vec<TicketPartial>,
@@ -64,7 +64,7 @@ fn weekday_index(dt: &DateTime<Utc>) -> usize {
 /// the total count of tickets submitted on that day.
 ///
 /// # Arguments
-/// - `tickets`: A slice of `TicketPartial` items to count.
+/// - `tickets`: A slice of [`TicketPartial`] items to count.
 ///
 /// # Returns
 /// An array `[usize; 7]` with ticket counts for each weekday.
@@ -78,12 +78,12 @@ fn count_by_weekday(tickets: &[TicketPartial]) -> [usize; 7] {
 
 /// Calculates the occurrences of each weekday within the date range covered by the tickets.
 ///
-/// This function determines the minimum and maximum dates from the provided `TicketPartial`
+/// This function determines the minimum and maximum dates from the provided [`TicketPartial`]
 /// slice and then counts how many times each weekday occurs within that inclusive date range.
 /// This is useful for normalizing ticket counts against the number of available days for each weekday.
 ///
 /// # Arguments
-/// - `partials`: A slice of `TicketPartial` items defining the date range.
+/// - `partials`: A slice of [`TicketPartial`] items defining the date range.
 ///
 /// # Returns
 /// An array `[usize; 7]` where each element represents the number of times a
@@ -132,7 +132,8 @@ fn day_counts(partials: &[TicketPartial]) -> [usize; 7] {
 
 /// Converts a numerical room representation back into a human-readable string format.
 ///
-/// This function is the inverse of the room parsing logic in `SubmitTicket` component.
+/// This function is the inverse of the room parsing logic in
+/// [`SubmitTicket`](`crate::pages::ticket::SubmitTicket`) component.
 /// It converts negative numbers back to "K" prefixed rooms, numbers >= 1000 back to "D" prefixed rooms,
 /// and other numbers to their string representation.
 ///
@@ -303,12 +304,12 @@ pub fn ticket_count_component() -> Html {
 ///
 /// # State
 /// Uses `use_state` hooks to manage:
-/// - `tickets`: A vector of `TicketPartial` for statistical analysis.
+/// - `tickets`: A vector of [`TicketPartial`] for statistical analysis.
 /// - `error`: Any error message from API calls.
 /// - `loading`: A boolean indicating if data is being fetched.
 ///
 /// # Functionality
-/// - Fetches all tickets (as `TicketPartial`) from `/api/tickets`.
+/// - Fetches all tickets (as [`TicketPartial`]) from `/api/tickets`.
 /// - Calculates:
 ///   - `counts`: Number of tickets submitted on each weekday.
 ///   - `occ`: Number of occurrences of each weekday in the ticket date range.
@@ -421,7 +422,7 @@ pub fn submit_stats_component() -> Html {
 
 /// A component that displays the total number of tickets per room.
 ///
-/// This component takes a list of `TicketPartial` items and calculates the
+/// This component takes a list of [`TicketPartial`] items and calculates the
 /// total number of tickets for each room. It then displays these totals
 /// in a sorted list with a bar chart visualization.
 ///
@@ -433,7 +434,7 @@ pub fn submit_stats_component() -> Html {
 /// - **Sorts Results**: Displays rooms sorted by ticket count in descending order.
 /// - **Visualizes Data**: Renders a bar chart where the width of each bar is
 ///   proportional to the ticket count for that room, relative to the room with the maximum tickets.
-/// - **Room Formatting**: Uses the `parse_room` function to display room numbers
+/// - **Room Formatting**: Uses the [`parse_room`] function to display room numbers
 ///   in a human-readable format.
 ///
 /// # Example

frontend/src/styles/_variables.scss

@@ -1,3 +1,4 @@
+:root{
     $color-bg: #ffffff;
     $color-sidebar: #570000;
     $color-accent: #2563eb;
@@ -5,4 +6,14 @@ $color-muted: #6b7280;
     $spacing-sm: 8px;   
     $spacing-md: 16px;
     $border-radius: 6px;
-$rundbgbackgroundcolor: #a0a0a0;
+    $rundbgbackgroundcolor: #a0a0a0
+}
+
+@media (prefers-color-scheme: dark) {
+    :root {
+        $color-bg: #000000;
+        $color-sidebar: #f3ff73;
+        
+
+    }
+}

frontend/src/styles/components/_icon.scss

@@ -10,8 +10,18 @@
   justify-content: center;
   padding: 0;
 
+  @media (max-width: 768px) {
+    max-width: 60px;
+    
+    img {
+      width: 100%;
+      height: auto;
+    }
+  }
+
   img {
     width: auto;
     height: auto;
   }
 }
+

frontend/src/styles/components/_sidebar.scss

@@ -4,31 +4,30 @@
 .sidebar {
   width: 260px;
   background: $color-sidebar;
-  color: #fffefe;
+  color: #fff;
   min-height: 100%;
   padding: $spacing-md;
   display: flex;
   flex-direction: column;
 
- 
-
   ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: $spacing-sm; flex: 1; }
 
   a, .menu-toggle {
-    color: #ffffff;
+    color: #fff;
     text-decoration: none;
     display: block;
     padding: 8px 12px;
-    border-radius: 4px;
+    border-radius: $border-radius;
-    &:hover { background: rgba(158, 45, 1, 0.842); }
+    transition: background 0.2s ease-in-out;
+    &:hover { background: rgba(255,255,255,0.1); }
   }
 
-  .menu-toggle { background: #ff5a316c; border: none; text-align: left; width: 100%; cursor: pointer; }
+  .menu-toggle { background: transparent; border: none; text-align: left; width: 100%; cursor: pointer; }
 
   .submenu {
     margin-left: 8px;
-    background: rgba(255,255,255,0.02);
+    background: rgba(255,255,255,0.05);
-    border-radius: 4px;
+    border-radius: $border-radius;
     padding: 6px;
     li { padding: 4px 0; }
   }
@@ -40,18 +39,135 @@
   }
 
   .logout-button {
-    background: rgba(255, 93, 43, 0.527);
+    background: rgba(255, 255, 255, 0.1);
-    color: #ffffff;
+    color: #fff;
-    border: 1px solid rgba(255, 255, 255, 0.801);
+    border: 1px solid rgba(255, 255, 255, 0.2);
     padding: 8px 12px;
     border-radius: 4px;
     width: 100%;
     cursor: pointer;
     text-align: left;
-    &:hover { background: rgba(255,255,255,0.15); }
+  }
-    &:active { background: rgba(255,255,255,0.2); }
+
+  .sidebar-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    width: 100%;
+    margin-bottom: $spacing-md;
+
+    .home {
+      flex-grow: 1;
+      display: flex;
+      justify-content: center;
+      
+      @media (max-width: 768px) {
+        padding-left: 36px;
+      }
+    }
+
+    .sidebar-close {
+      display: none;
+      background: transparent;
+      border: none;
+      color: #fff;
+      cursor: pointer;
+      padding: 8px;
+      border-radius: 50%;
+      align-items: center;
+      justify-content: center;
+      transition: background 0.2s ease-in-out;
+      margin-bottom: 0;
+
+      &:hover {
+        background: rgba(255, 255, 255, 0.1);
+      }
+
+      svg {
+        width: 20px;
+        height: 20px;
+        stroke: #fff;
+      }
+
+      @media (max-width: 768px) {
+        display: flex;
+      }
+    }
+  }
+  
+  .home-svg {
+    width: 24px;
+    height: 24px; 
+    vertical-align: middle;
+    margin-right: 8px;
   }
 
   &.user { width: 220px; background: darken($color-sidebar, 6%); }
 }
 
+// Floating mobile menu toggle button
+.mobile-menu-toggle {
+  display: none;
+  
+  @media (max-width: 768px) {
+    display: flex;
+    position: fixed;
+    top: 1rem;
+    left: 1rem;
+    z-index: 998;
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    border: 1px solid rgba(128, 128, 128, 0.2);
+    background-color: var(--color-container);
+    color: var(--color-text);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+    cursor: pointer;
+    align-items: center;
+    justify-content: center;
+    padding: 0;
+    transition: all 0.2s ease-in-out;
+    
+    svg {
+      width: 24px;
+      height: 24px;
+      stroke: var(--color-text);
+      transition: stroke 0.2s ease-in-out;
+    }
+    
+    &:hover {
+      transform: translateY(-1px);
+      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
+      background-color: var(--color-bg);
+    }
+    
+    &:active {
+      transform: translateY(0);
+    }
+  }
+}
+
+// Overlay backdrop that dims the screen and allows dismissals on mobile
+.sidebar-overlay {
+  display: none;
+  
+  @media (max-width: 768px) {
+    display: block;
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100vw;
+    height: 100vh;
+    background: rgba(0, 0, 0, 0.4);
+    backdrop-filter: blur(4px);
+    z-index: 999;
+    opacity: 0;
+    pointer-events: none;
+    transition: opacity 0.3s ease-in-out;
+    
+    &.open {
+      opacity: 1;
+      pointer-events: auto;
+    }
+  }
+}

frontend/src/styles/components/_tickets.scss

@@ -16,6 +16,7 @@
 .listbox {
   max-width: auto;
   margin:0 0;
+  background-color: #90ff82;
   background-color: $rundbgbackgroundcolor;
   padding-bottom: 96px;
   color: white;
@@ -51,4 +52,8 @@
   display: grid;
   grid-template-columns: auto auto auto;
   gap: 8px;
+  margin-top: 96px; 
+}
+.warning {
+  color: #570000;
 }

frontend/src/styles/main.scss

@@ -8,6 +8,20 @@
 @use "components/home";
 @use "components/icon";
 
+:root {
+  --color-bg: #ffffff;
+  --color-container: #ffffff;
+  --color-text: #111827;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --color-bg: #121212;
+    --color-container: #333333;
+    --color-text: #e2e2e2;
+  }
+}
+
 body {
   background: variables.$color-bg;
   font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
@@ -27,7 +41,10 @@ body {
 .sidebar {
   width: 260px;
   flex-shrink: 0;
-  height: 100%;
+  position: fixed;
+  left: 0;
+  top: 0;
+  height: 100vh;
   overflow-y: auto;
   box-sizing: border-box;
 }
@@ -35,6 +52,7 @@ body {
 .content {
   flex: 1;
   min-width: 0;
+  margin-left: 260px;
   height: 100%;
   overflow-y: auto;
   padding: variables.$spacing-md;
@@ -46,8 +64,8 @@ body {
     position: fixed;
     top: 0;
     bottom: 0;
-    left: -100%;
+    left: -260px;
-    transition: left .2s;
+    transition: left .3s ease-in-out;
     z-index: 1000;
     height: 100%;
     box-sizing: border-box;
@@ -80,7 +98,7 @@ body {
     box-sizing: border-box;
   }
 
-  input, select, button {
+  input, select, button, a {
     width: 100%;
     box-sizing: border-box;
     padding: 16px;
@@ -98,6 +116,12 @@ body {
     margin: 16px 0;
   }
 
+  a {
+    color: #000000;
+    text-align: center;
+    border-style: dashed;
+  }
+
   &.login {
     margin-top: 96px;
   }
@@ -107,3 +131,5 @@ body {
   width: 100%;
   box-sizing: border-box;
 }
+
+

src/lib.rs

@@ -1 +1 @@
-#![doc = include_str!("../README.md")]
+#![doc = include_str!("../README.cargo.md")]