Added super user for whole service management

2025-12-05 15:00:14 -03:00
parent 18f44c0e85
commit 592da7a2b6
21 changed files with 2268 additions and 25 deletions
--- a/.env.example
+++ b/.env.example
@@ -53,3 +53,11 @@ DATABASE_PASSWORD=your-password

 # Set to true to log all SQL queries (useful for debugging)
 DATABASE_ECHO=false
+
+# -------------------------------------------
+# Super Admin Configuration
+# -------------------------------------------
+# Credentials for the Super Admin user to be auto-provisioned at startup
+SUPER_ADMIN_USERNAME=masteradmin
+SUPER_ADMIN_EMAIL=masteradmin@example.com
+SUPER_ADMIN_PASSWORD=YourSecurePassword123!
--- a/backend/src/config.py
+++ b/backend/src/config.py
@@ -33,6 +33,11 @@ class Settings(BaseSettings):
    database_password: str = Field(default="postgres", env="DATABASE_PASSWORD")
    database_echo: bool = Field(default=False, env="DATABASE_ECHO")

+    # Super Admin settings (for auto-provisioning master user at startup)
+    super_admin_username: str | None = Field(default=None, env="SUPER_ADMIN_USERNAME")
+    super_admin_email: str | None = Field(default=None, env="SUPER_ADMIN_EMAIL")
+    super_admin_password: str | None = Field(default=None, env="SUPER_ADMIN_PASSWORD")
+
    @property
    def database_url(self) -> str:
        """Construct the async database URL for SQLAlchemy."""
--- a/backend/src/main.py
+++ b/backend/src/main.py
@@ -17,7 +17,9 @@ from src.models import (
    RoleResponse, ProjectMemberResponse, UserRoleUpdateRequest, ROLE_DISPLAY_NAMES,
    CommentResponse, CommentReplyResponse, CommentCreateRequest, ReplyCreateRequest,
    RequirementStatusResponse, DeletedRequirementResponse,
-    UserCreateRequest, UserCreateResponse
+    UserCreateRequest, UserCreateResponse,
+    SystemUserResponse, SystemProjectResponse, SystemProjectMemberResponse,
+    AssignUserToProjectRequest, SystemUserCreateRequest
 )
 from src.controller import AuthController
 from src.config import get_openid, get_settings
@@ -83,6 +85,45 @@ async def lifespan(app: FastAPI):
        await session.commit()
    logger.info("Default validation statuses ensured")
    
+    # Provision super admin if configured
+    if settings.super_admin_username and settings.super_admin_email and settings.super_admin_password:
+        logger.info(f"Super admin configuration found, provisioning user: {settings.super_admin_username}")
+        try:
+            # Check if super admin already exists in local DB
+            async with AsyncSessionLocal() as session:
+                user_repo = UserRepository(session)
+                existing_user = await user_repo.get_by_username(settings.super_admin_username)
+                
+                if existing_user:
+                    logger.info(f"Super admin already exists in database: {existing_user.username} (id: {existing_user.id})")
+                    # Ensure they have super_admin role (role_id=6)
+                    if existing_user.role_id != 6:
+                        logger.info(f"Updating existing super admin to role_id=6")
+                        await user_repo.update_role(existing_user.id, 6)
+                        await session.commit()
+                else:
+                    # Provision in Keycloak first
+                    keycloak_sub = await KeycloakAdminService.provision_super_admin(
+                        username=settings.super_admin_username,
+                        email=settings.super_admin_email,
+                        password=settings.super_admin_password
+                    )
+                    
+                    # Create in local database with super_admin role (role_id=6)
+                    new_user = await user_repo.create(
+                        sub=keycloak_sub,
+                        role_id=6,  # super_admin role
+                        username=settings.super_admin_username,
+                        full_name="Super Admin"
+                    )
+                    await session.commit()
+                    logger.info(f"Super admin provisioned successfully: {new_user.username} (id: {new_user.id})")
+        except Exception as e:
+            logger.error(f"Failed to provision super admin: {e}")
+            # Don't fail startup if super admin provisioning fails
+    else:
+        logger.info("No super admin configuration found, skipping provisioning")
+    
    yield
    
    # Shutdown
@@ -2064,3 +2105,488 @@ async def delete_reply(
    
    await reply_repo.soft_delete_reply(reply_id)
    await db.commit()
+
+
+# ===========================================
+# Super Admin System Endpoints (role_id=6 only)
+# ===========================================
+
+def _require_super_admin(user):
+    """
+    Helper to check if user is a super admin (role_id=6).
+    
+    Raises:
+        HTTPException: 403 Forbidden if user is not a super admin
+    """
+    if user.role_id != 6:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Only super admins can access this endpoint"
+        )
+
+
+@app.get("/api/admin/system/users", response_model=List[SystemUserResponse])
+async def get_all_system_users(
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Get all users in the system (super admin only).
+    Includes Keycloak enabled status.
+
+    Returns:
+        List of all users with their roles and status.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    user_repo = UserRepository(db)
+    users = await user_repo.get_all()
+    
+    # Build response with Keycloak status
+    result = []
+    for user in users:
+        # Get enabled status from Keycloak
+        is_enabled = True
+        try:
+            is_enabled = await KeycloakAdminService.get_user_status(user.sub)
+        except Exception as e:
+            logger.warning(f"Could not get Keycloak status for user {user.id}: {e}")
+        
+        result.append(SystemUserResponse(
+            id=user.id,
+            sub=user.sub,
+            username=user.username,
+            full_name=user.full_name,
+            role_id=user.role_id,
+            role_name=user.role.role_name if user.role else "unknown",
+            role_display_name=ROLE_DISPLAY_NAMES.get(user.role.role_name, user.role.role_name.title()) if user.role else "Unknown",
+            is_enabled=is_enabled,
+            created_at=user.created_at
+        ))
+    
+    return result
+
+
+@app.get("/api/admin/system/projects", response_model=List[SystemProjectResponse])
+async def get_all_system_projects(
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Get all projects in the system (super admin only).
+    Includes member count for each project.
+
+    Returns:
+        List of all projects with member counts.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    project_repo = ProjectRepository(db)
+    projects = await project_repo.get_all()
+    
+    result = []
+    for project in projects:
+        member_count = await project_repo.get_member_count(project.id)
+        result.append(SystemProjectResponse(
+            id=project.id,
+            project_name=project.project_name,
+            project_desc=project.project_desc,
+            member_count=member_count,
+            created_at=project.created_at
+        ))
+    
+    return result
+
+
+@app.post("/api/admin/system/projects", response_model=SystemProjectResponse, status_code=status.HTTP_201_CREATED)
+async def create_system_project(
+    request: Request,
+    project_data: ProjectCreateRequest,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Create a new project (super admin only).
+    Unlike regular project creation, this doesn't add the creator as a member.
+
+    Args:
+        project_data: The project data
+
+    Returns:
+        The created project.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    project_repo = ProjectRepository(db)
+    project = await project_repo.create(
+        project_name=project_data.project_name,
+        project_desc=project_data.project_desc,
+        creator_id=None,  # Super admin creates without being a member
+    )
+    
+    await db.commit()
+    
+    return SystemProjectResponse(
+        id=project.id,
+        project_name=project.project_name,
+        project_desc=project.project_desc,
+        member_count=0,
+        created_at=project.created_at
+    )
+
+
+@app.get("/api/admin/system/projects/{project_id}/members", response_model=List[SystemProjectMemberResponse])
+async def get_system_project_members(
+    project_id: int,
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Get all members of a project (super admin only).
+
+    Args:
+        project_id: The project ID
+
+    Returns:
+        List of project members.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    project_repo = ProjectRepository(db)
+    
+    # Check if project exists
+    project = await project_repo.get_by_id(project_id)
+    if not project:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Project with id {project_id} not found"
+        )
+    
+    members = await project_repo.get_members(project_id)
+    
+    return [
+        SystemProjectMemberResponse(
+            user_id=member.id,
+            username=member.username,
+            full_name=member.full_name,
+            role_id=member.role_id,
+            role_name=member.role.role_name if member.role else "unknown",
+            joined_at=None  # TODO: Add joined_at from project_members table
+        )
+        for member in members
+    ]
+
+
+@app.post("/api/admin/system/projects/{project_id}/members", status_code=status.HTTP_201_CREATED)
+async def assign_user_to_project(
+    project_id: int,
+    request: Request,
+    data: AssignUserToProjectRequest,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Assign a user to a project (super admin only).
+
+    Args:
+        project_id: The project ID
+        data: The user to assign
+
+    Returns:
+        Success message.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    project_repo = ProjectRepository(db)
+    user_repo = UserRepository(db)
+    
+    # Check if project exists
+    project = await project_repo.get_by_id(project_id)
+    if not project:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Project with id {project_id} not found"
+        )
+    
+    # Check if user exists
+    user = await user_repo.get_by_id(data.user_id)
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"User with id {data.user_id} not found"
+        )
+    
+    # Optionally update role if provided
+    if data.role_id is not None:
+        role_repo = RoleRepository(db)
+        role = await role_repo.get_by_id(data.role_id)
+        if not role:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Invalid role id {data.role_id}"
+            )
+        await user_repo.update_role(data.user_id, data.role_id)
+    
+    # Add user to project
+    added = await project_repo.add_member(project_id, data.user_id)
+    
+    if not added:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="User is already a member of this project"
+        )
+    
+    await db.commit()
+    return {"message": "User assigned to project successfully"}
+
+
+@app.delete("/api/admin/system/projects/{project_id}/members/{user_id}", status_code=status.HTTP_204_NO_CONTENT)
+async def remove_user_from_project(
+    project_id: int,
+    user_id: int,
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Remove a user from a project (super admin only).
+
+    Args:
+        project_id: The project ID
+        user_id: The user ID to remove
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    project_repo = ProjectRepository(db)
+    
+    # Check if project exists
+    project = await project_repo.get_by_id(project_id)
+    if not project:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Project with id {project_id} not found"
+        )
+    
+    removed = await project_repo.remove_member(project_id, user_id)
+    
+    if not removed:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="User is not a member of this project"
+        )
+    
+    await db.commit()
+
+
+@app.put("/api/admin/system/users/{user_id}/block", status_code=status.HTTP_200_OK)
+async def block_user(
+    user_id: int,
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Block a user by disabling them in Keycloak (super admin only).
+    Blocked users cannot log in.
+
+    Args:
+        user_id: The user ID to block
+
+    Returns:
+        Success message.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    # Prevent blocking yourself
+    if current_user.id == user_id:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="You cannot block yourself"
+        )
+    
+    user_repo = UserRepository(db)
+    user = await user_repo.get_by_id(user_id)
+    
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"User with id {user_id} not found"
+        )
+    
+    # Disable in Keycloak
+    await KeycloakAdminService.disable_user(user.sub)
+    
+    return {"message": f"User {user.username or user.sub} has been blocked"}
+
+
+@app.put("/api/admin/system/users/{user_id}/unblock", status_code=status.HTTP_200_OK)
+async def unblock_user(
+    user_id: int,
+    request: Request,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Unblock a user by enabling them in Keycloak (super admin only).
+
+    Args:
+        user_id: The user ID to unblock
+
+    Returns:
+        Success message.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    user_repo = UserRepository(db)
+    user = await user_repo.get_by_id(user_id)
+    
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"User with id {user_id} not found"
+        )
+    
+    # Enable in Keycloak
+    await KeycloakAdminService.enable_user(user.sub)
+    
+    return {"message": f"User {user.username or user.sub} has been unblocked"}
+
+
+@app.put("/api/admin/system/users/{user_id}/role", response_model=SystemUserResponse)
+async def update_system_user_role(
+    user_id: int,
+    request: Request,
+    role_data: UserRoleUpdateRequest,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Update a user's role (super admin only).
+    Can promote users to super_admin or demote them.
+
+    Args:
+        user_id: The user ID to update
+        role_data: The new role ID
+
+    Returns:
+        The updated user info.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    # Prevent self-demotion from super admin
+    if current_user.id == user_id and role_data.role_id != 6:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="You cannot demote yourself. Ask another super admin to change your role."
+        )
+    
+    # Verify role exists
+    role_repo = RoleRepository(db)
+    role = await role_repo.get_by_id(role_data.role_id)
+    if not role:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Invalid role id {role_data.role_id}"
+        )
+    
+    # Update the user's role
+    user_repo = UserRepository(db)
+    updated_user = await user_repo.update_role(user_id, role_data.role_id)
+    
+    if not updated_user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"User with id {user_id} not found"
+        )
+    
+    await db.commit()
+    
+    # Get enabled status from Keycloak
+    is_enabled = True
+    try:
+        is_enabled = await KeycloakAdminService.get_user_status(updated_user.sub)
+    except Exception as e:
+        logger.warning(f"Could not get Keycloak status for user {user_id}: {e}")
+    
+    return SystemUserResponse(
+        id=updated_user.id,
+        sub=updated_user.sub,
+        username=updated_user.username,
+        full_name=updated_user.full_name,
+        role_id=updated_user.role_id,
+        role_name=role.role_name,
+        role_display_name=ROLE_DISPLAY_NAMES.get(role.role_name, role.role_name.title()),
+        is_enabled=is_enabled,
+        created_at=updated_user.created_at
+    )
+
+
+@app.post("/api/admin/system/users", response_model=SystemUserResponse, status_code=status.HTTP_201_CREATED)
+async def create_system_user(
+    request: Request,
+    user_data: SystemUserCreateRequest,
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Create a new user in the system (super admin only).
+    Creates the user in Keycloak with a temporary password.
+
+    Args:
+        user_data: The user data
+
+    Returns:
+        The created user info.
+    """
+    current_user = await _get_current_user_db(request, db)
+    _require_super_admin(current_user)
+    
+    # Validate role exists and is not super_admin unless current user is super admin
+    role_repo = RoleRepository(db)
+    role = await role_repo.get_by_id(user_data.role_id)
+    if not role:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Invalid role id {user_data.role_id}"
+        )
+    
+    # Create user in Keycloak
+    keycloak_sub = await KeycloakAdminService.create_user(
+        username=user_data.username,
+        email=user_data.email,
+        password=user_data.password,
+        first_name=user_data.first_name,
+        last_name=user_data.last_name
+    )
+    
+    # Build full name
+    full_name = None
+    if user_data.first_name or user_data.last_name:
+        full_name = f"{user_data.first_name or ''} {user_data.last_name or ''}".strip()
+    
+    # Create in local database
+    user_repo = UserRepository(db)
+    new_user = await user_repo.create(
+        sub=keycloak_sub,
+        role_id=user_data.role_id,
+        username=user_data.username,
+        full_name=full_name
+    )
+    
+    await db.commit()
+    
+    logger.info(f"Super admin {current_user.id} created new user {new_user.id} ({user_data.username})")
+    
+    return SystemUserResponse(
+        id=new_user.id,
+        sub=new_user.sub,
+        username=new_user.username,
+        full_name=new_user.full_name,
+        role_id=new_user.role_id,
+        role_name=role.role_name,
+        role_display_name=ROLE_DISPLAY_NAMES.get(role.role_name, role.role_name.title()),
+        is_enabled=True,
+        created_at=new_user.created_at
+    )
--- a/backend/src/models.py
+++ b/backend/src/models.py
@@ -27,7 +27,10 @@ class UserInfo(BaseModel):
 ROLE_DISPLAY_NAMES = {
    "editor": "Editor",
    "auditor": "Auditor", 
-    "admin": "Project Admin"
+    "admin": "Project Admin",
+    "user": "User",
+    "viewer": "Viewer",
+    "super_admin": "Super Admin"
 }


@@ -473,3 +476,61 @@ class UserCreateResponse(BaseModel):

    class Config:
        from_attributes = True
+
+
+# Super Admin schemas
+class SystemUserResponse(BaseModel):
+    """Response schema for a user in the system admin view."""
+    id: int
+    sub: str
+    username: Optional[str] = None
+    full_name: Optional[str] = None
+    role_id: int
+    role_name: str
+    role_display_name: str
+    is_enabled: bool = True  # From Keycloak
+    created_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class SystemProjectResponse(BaseModel):
+    """Response schema for a project in the system admin view."""
+    id: int
+    project_name: str
+    project_desc: Optional[str] = None
+    member_count: int = 0
+    created_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class SystemProjectMemberResponse(BaseModel):
+    """Response schema for a project member in system admin view."""
+    user_id: int
+    username: Optional[str] = None
+    full_name: Optional[str] = None
+    role_id: int
+    role_name: str
+    joined_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class AssignUserToProjectRequest(BaseModel):
+    """Request schema for assigning a user to a project."""
+    user_id: int
+    role_id: Optional[int] = None  # Optional: set role when assigning
+
+
+class SystemUserCreateRequest(BaseModel):
+    """Request schema for creating a user from super admin panel."""
+    username: str
+    email: str
+    password: str
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    role_id: int = 1  # Default to editor
--- a/backend/src/repositories/project_repository.py
+++ b/backend/src/repositories/project_repository.py
@@ -234,3 +234,21 @@ class ProjectRepository:
            .where(ProjectMember.project_id == project_id)
        )
        return list(result.scalars().all())
+
+    async def get_member_count(self, project_id: int) -> int:
+        """
+        Get the count of members in a project.
+        
+        Args:
+            project_id: The project ID
+            
+        Returns:
+            Number of members in the project
+        """
+        from sqlalchemy import func
+        result = await self.session.execute(
+            select(func.count())
+            .select_from(ProjectMember)
+            .where(ProjectMember.project_id == project_id)
+        )
+        return result.scalar() or 0
--- a/backend/src/repositories/user_repository.py
+++ b/backend/src/repositories/user_repository.py
@@ -59,10 +59,10 @@ class RoleRepository:
        """
        Ensure default roles exist in the database.
        Called during application startup.
-        Creates roles in order: editor (1), auditor (2), admin (3)
+        Creates roles in order: editor (1), auditor (2), admin (3), user (4), viewer (5), super_admin (6)
        """
-        # Order matters for role IDs: editor=1, auditor=2, admin=3
-        default_roles = ["editor", "auditor", "admin"]
+        # Order matters for role IDs: editor=1, auditor=2, admin=3, user=4, viewer=5, super_admin=6
+        default_roles = ["editor", "auditor", "admin", "user", "viewer", "super_admin"]
        
        for role_name in default_roles:
            existing = await self.get_by_name(role_name)
@@ -111,6 +111,37 @@ class UserRepository:
        )
        return result.scalar_one_or_none()

+    async def get_by_username(self, username: str) -> Optional[User]:
+        """
+        Get a user by their username.
+        
+        Args:
+            username: The username to search for
+            
+        Returns:
+            User if found, None otherwise
+        """
+        result = await self.session.execute(
+            select(User)
+            .options(selectinload(User.role))
+            .where(User.username == username)
+        )
+        return result.scalar_one_or_none()
+
+    async def get_all(self) -> List[User]:
+        """
+        Get all users in the system.
+        
+        Returns:
+            List of all users with their roles
+        """
+        result = await self.session.execute(
+            select(User)
+            .options(selectinload(User.role))
+            .order_by(User.id)
+        )
+        return list(result.scalars().all())
+
    async def create(self, sub: str, role_id: int, username: str, full_name: str | None = None) -> User:
        """
        Create a new user.
--- a/backend/src/service.py
+++ b/backend/src/service.py
@@ -328,3 +328,189 @@ class KeycloakAdminService:
            
            logger.info(f"Created user in Keycloak: {username} -> {keycloak_user_id}")
            return keycloak_user_id
+
+    @classmethod
+    async def get_user_by_username(cls, username: str) -> dict | None:
+        """
+        Get a user from Keycloak by username.
+        
+        Args:
+            username: The username to search for
+            
+        Returns:
+            The user data if found, None otherwise
+        """
+        token = await cls._get_admin_token()
+        users_url = f"{settings.keycloak_server_url}admin/realms/{settings.keycloak_realm}/users"
+        
+        async with httpx.AsyncClient(verify=False) as client:
+            response = await client.get(
+                f"{users_url}?username={username}&exact=true",
+                headers={"Authorization": f"Bearer {token}"}
+            )
+            
+            if response.status_code == 200:
+                users = response.json()
+                if users:
+                    return users[0]
+            return None
+
+    @classmethod
+    async def provision_super_admin(
+        cls,
+        username: str,
+        email: str,
+        password: str,
+    ) -> str:
+        """
+        Provision the super admin user in Keycloak.
+        If user already exists, returns their ID. Otherwise creates them.
+        
+        Args:
+            username: The super admin username
+            email: The super admin email
+            password: The temporary password
+            
+        Returns:
+            The Keycloak user ID (sub)
+        """
+        # Check if user already exists
+        existing_user = await cls.get_user_by_username(username)
+        if existing_user:
+            logger.info(f"Super admin user already exists in Keycloak: {username} -> {existing_user['id']}")
+            return existing_user["id"]
+        
+        # Create the user
+        logger.info(f"Creating super admin user in Keycloak: {username}")
+        return await cls.create_user(
+            username=username,
+            email=email,
+            password=password,
+            first_name="Super",
+            last_name="Admin"
+        )
+
+    @classmethod
+    async def disable_user(cls, keycloak_user_id: str) -> bool:
+        """
+        Disable a user in Keycloak (block them from logging in).
+        
+        Args:
+            keycloak_user_id: The Keycloak user ID (sub)
+            
+        Returns:
+            True if successful
+            
+        Raises:
+            HTTPException: If the operation fails
+        """
+        token = await cls._get_admin_token()
+        user_url = f"{settings.keycloak_server_url}admin/realms/{settings.keycloak_realm}/users/{keycloak_user_id}"
+        
+        async with httpx.AsyncClient(verify=False) as client:
+            response = await client.put(
+                user_url,
+                json={"enabled": False},
+                headers={
+                    "Authorization": f"Bearer {token}",
+                    "Content-Type": "application/json"
+                }
+            )
+            
+            if response.status_code == 204:
+                logger.info(f"Disabled user in Keycloak: {keycloak_user_id}")
+                return True
+            
+            if response.status_code == 404:
+                raise HTTPException(
+                    status_code=status.HTTP_404_NOT_FOUND,
+                    detail="User not found in Keycloak"
+                )
+            
+            logger.error(f"Failed to disable user in Keycloak: {response.status_code} - {response.text}")
+            raise HTTPException(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                detail=f"Failed to disable user in Keycloak: {response.text}"
+            )
+
+    @classmethod
+    async def enable_user(cls, keycloak_user_id: str) -> bool:
+        """
+        Enable a user in Keycloak (unblock them).
+        
+        Args:
+            keycloak_user_id: The Keycloak user ID (sub)
+            
+        Returns:
+            True if successful
+            
+        Raises:
+            HTTPException: If the operation fails
+        """
+        token = await cls._get_admin_token()
+        user_url = f"{settings.keycloak_server_url}admin/realms/{settings.keycloak_realm}/users/{keycloak_user_id}"
+        
+        async with httpx.AsyncClient(verify=False) as client:
+            response = await client.put(
+                user_url,
+                json={"enabled": True},
+                headers={
+                    "Authorization": f"Bearer {token}",
+                    "Content-Type": "application/json"
+                }
+            )
+            
+            if response.status_code == 204:
+                logger.info(f"Enabled user in Keycloak: {keycloak_user_id}")
+                return True
+            
+            if response.status_code == 404:
+                raise HTTPException(
+                    status_code=status.HTTP_404_NOT_FOUND,
+                    detail="User not found in Keycloak"
+                )
+            
+            logger.error(f"Failed to enable user in Keycloak: {response.status_code} - {response.text}")
+            raise HTTPException(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                detail=f"Failed to enable user in Keycloak: {response.text}"
+            )
+
+    @classmethod
+    async def get_user_status(cls, keycloak_user_id: str) -> bool:
+        """
+        Get a user's enabled status from Keycloak.
+        
+        Args:
+            keycloak_user_id: The Keycloak user ID (sub)
+            
+        Returns:
+            True if user is enabled, False if disabled
+            
+        Raises:
+            HTTPException: If the operation fails
+        """
+        token = await cls._get_admin_token()
+        user_url = f"{settings.keycloak_server_url}admin/realms/{settings.keycloak_realm}/users/{keycloak_user_id}"
+        
+        async with httpx.AsyncClient(verify=False) as client:
+            response = await client.get(
+                user_url,
+                headers={"Authorization": f"Bearer {token}"}
+            )
+            
+            if response.status_code == 200:
+                user_data = response.json()
+                return user_data.get("enabled", True)
+            
+            if response.status_code == 404:
+                raise HTTPException(
+                    status_code=status.HTTP_404_NOT_FOUND,
+                    detail="User not found in Keycloak"
+                )
+            
+            logger.error(f"Failed to get user status from Keycloak: {response.status_code} - {response.text}")
+            raise HTTPException(
+                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                detail=f"Failed to get user status from Keycloak: {response.text}"
+            )
--- a/docker-compose.dev.yaml
+++ b/docker-compose.dev.yaml
@@ -36,6 +36,11 @@ services:
      - ./backend:/app
    env_file:
      - .env
+    environment:
+      # Super Admin credentials (optional - if set, creates master user at startup)
+      - SUPER_ADMIN_USERNAME=${SUPER_ADMIN_USERNAME:-}
+      - SUPER_ADMIN_EMAIL=${SUPER_ADMIN_EMAIL:-}
+      - SUPER_ADMIN_PASSWORD=${SUPER_ADMIN_PASSWORD:-}
    depends_on:
      keycloak:
        condition: service_healthy
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -38,6 +38,11 @@ services:
      - ./backend:/app
    env_file:
      - .env
+    environment:
+      # Super Admin credentials (optional - if set, creates master user at startup)
+      - SUPER_ADMIN_USERNAME=${SUPER_ADMIN_USERNAME:-}
+      - SUPER_ADMIN_EMAIL=${SUPER_ADMIN_EMAIL:-}
+      - SUPER_ADMIN_PASSWORD=${SUPER_ADMIN_PASSWORD:-}
    extra_hosts:
      - "localhost:host-gateway"
    depends_on:
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -5,6 +5,7 @@ import DashboardPage from '@/pages/DashboardPage'
 import RequirementsPage from '@/pages/RequirementsPage'
 import RequirementDetailPage from '@/pages/RequirementDetailPage'
 import AdminPage from '@/pages/AdminPage'
+import SuperAdminPage from '@/pages/SuperAdminPage'
 import ProtectedRoute from '@/components/ProtectedRoute'

 function App() {
@@ -21,7 +22,7 @@ function App() {
      <Route
        path="/dashboard"
        element={
-          <ProtectedRoute>
+          <ProtectedRoute blockSuperAdmin>
            <DashboardPage />
          </ProtectedRoute>
        }
@@ -29,7 +30,7 @@ function App() {
      <Route
        path="/requirements"
        element={
-          <ProtectedRoute>
+          <ProtectedRoute blockSuperAdmin>
            <RequirementsPage />
          </ProtectedRoute>
        }
@@ -37,7 +38,7 @@ function App() {
      <Route
        path="/requirements/:id"
        element={
-          <ProtectedRoute>
+          <ProtectedRoute blockSuperAdmin>
            <RequirementDetailPage />
          </ProtectedRoute>
        }
@@ -45,11 +46,19 @@ function App() {
      <Route
        path="/admin"
        element={
-          <ProtectedRoute>
+          <ProtectedRoute blockSuperAdmin>
            <AdminPage />
          </ProtectedRoute>
        }
      />
+      <Route
+        path="/super-admin"
+        element={
+          <ProtectedRoute requireSuperAdmin>
+            <SuperAdminPage />
+          </ProtectedRoute>
+        }
+      />
    </Routes>
  )
 }
--- a/frontend/src/components/ProtectedRoute.tsx
+++ b/frontend/src/components/ProtectedRoute.tsx
@@ -4,10 +4,18 @@ import { useAuth } from '@/hooks'

 interface ProtectedRouteProps {
  children: ReactNode
+  /** If true, super admins (role_id=6) will be redirected to /super-admin */
+  blockSuperAdmin?: boolean
+  /** If true, only super admins (role_id=6) can access this route */
+  requireSuperAdmin?: boolean
 }

-export default function ProtectedRoute({ children }: ProtectedRouteProps) {
-  const { isAuthenticated, isLoading } = useAuth()
+export default function ProtectedRoute({ 
+  children, 
+  blockSuperAdmin = false,
+  requireSuperAdmin = false 
+}: ProtectedRouteProps) {
+  const { isAuthenticated, isLoading, user } = useAuth()

  if (isLoading) {
    return (
@@ -24,5 +32,18 @@ export default function ProtectedRoute({ children }: ProtectedRouteProps) {
    return <Navigate to="/" replace />
  }

+  // Check if user is a super admin (role_id=6)
+  const isSuperAdmin = user?.role_id === 6
+
+  // If route requires super admin and user is not, redirect to dashboard
+  if (requireSuperAdmin && !isSuperAdmin) {
+    return <Navigate to="/dashboard" replace />
+  }
+
+  // If route blocks super admins and user is one, redirect to super admin page
+  if (blockSuperAdmin && isSuperAdmin) {
+    return <Navigate to="/super-admin" replace />
+  }
+
  return <>{children}</>
 }
--- a/frontend/src/i18n/locales/en/admin.json
+++ b/frontend/src/i18n/locales/en/admin.json
@@ -81,5 +81,57 @@
    "warningMessage": "⚠️ This will also delete all requirement links using this type.",
    "deleteButton": "Delete",
    "errorDeleting": "Failed to delete relationship type"
+  },
+  "superAdmin": {
+    "title": "Super Admin",
+    "subtitle": "System Management",
+    "role": "Super Admin",
+    "systemManagement": "System Management",
+    "systemStats": "System Stats",
+    "totalUsers": "Users",
+    "totalProjects": "Projects",
+    "tabs": {
+      "users": "Users",
+      "projects": "Projects",
+      "assignments": "Assignments"
+    },
+    "users": {
+      "title": "All Users",
+      "createUser": "Create User",
+      "username": "Username",
+      "role": "Role",
+      "status": "Status",
+      "actions": "Actions",
+      "active": "Active",
+      "blocked": "Blocked",
+      "block": "Block",
+      "unblock": "Unblock",
+      "you": "You"
+    },
+    "projects": {
+      "title": "All Projects",
+      "createProject": "Create Project",
+      "projectName": "Project Name",
+      "projectNamePlaceholder": "Enter project name",
+      "description": "Description",
+      "descriptionPlaceholder": "Enter project description",
+      "members": "members",
+      "manageMembers": "Manage Members",
+      "noProjects": "No projects found",
+      "create": "Create"
+    },
+    "assignments": {
+      "title": "User-Project Assignments",
+      "selectProject": "Select Project",
+      "chooseProject": "Choose a project...",
+      "addMember": "Add Member",
+      "selectUser": "Select User",
+      "chooseUser": "Choose a user...",
+      "noMembers": "No members in this project",
+      "remove": "Remove",
+      "assign": "Assign",
+      "confirmRemove": "Are you sure you want to remove this user from the project?",
+      "allUsersAssigned": "All users are already assigned to this project"
+    }
  }
 }
--- a/frontend/src/i18n/locales/en/dashboard.json
+++ b/frontend/src/i18n/locales/en/dashboard.json
@@ -13,7 +13,8 @@
  },
  "header": {
    "projects": "Projects",
-    "admin": "Admin"
+    "admin": "Admin",
+    "searchPlaceholder": "Search requirements by code or name..."
  },
  "projectDropdown": {
    "loading": "Loading...",
--- a/frontend/src/i18n/locales/pt/admin.json
+++ b/frontend/src/i18n/locales/pt/admin.json
@@ -81,5 +81,57 @@
    "warningMessage": "⚠️ Isso também excluirá todos os links de requisitos usando este tipo.",
    "deleteButton": "Excluir",
    "errorDeleting": "Falha ao excluir tipo de relacionamento"
+  },
+  "superAdmin": {
+    "title": "Super Admin",
+    "subtitle": "Gerenciamento do Sistema",
+    "role": "Super Admin",
+    "systemManagement": "Gerenciamento do Sistema",
+    "systemStats": "Estatísticas do Sistema",
+    "totalUsers": "Usuários",
+    "totalProjects": "Projetos",
+    "tabs": {
+      "users": "Usuários",
+      "projects": "Projetos",
+      "assignments": "Atribuições"
+    },
+    "users": {
+      "title": "Todos os Usuários",
+      "createUser": "Criar Usuário",
+      "username": "Usuário",
+      "role": "Função",
+      "status": "Status",
+      "actions": "Ações",
+      "active": "Ativo",
+      "blocked": "Bloqueado",
+      "block": "Bloquear",
+      "unblock": "Desbloquear",
+      "you": "Você"
+    },
+    "projects": {
+      "title": "Todos os Projetos",
+      "createProject": "Criar Projeto",
+      "projectName": "Nome do Projeto",
+      "projectNamePlaceholder": "Digite o nome do projeto",
+      "description": "Descrição",
+      "descriptionPlaceholder": "Digite a descrição do projeto",
+      "members": "membros",
+      "manageMembers": "Gerenciar Membros",
+      "noProjects": "Nenhum projeto encontrado",
+      "create": "Criar"
+    },
+    "assignments": {
+      "title": "Atribuições de Usuários em Projetos",
+      "selectProject": "Selecionar Projeto",
+      "chooseProject": "Escolha um projeto...",
+      "addMember": "Adicionar Membro",
+      "selectUser": "Selecionar Usuário",
+      "chooseUser": "Escolha um usuário...",
+      "noMembers": "Nenhum membro neste projeto",
+      "remove": "Remover",
+      "assign": "Atribuir",
+      "confirmRemove": "Tem certeza de que deseja remover este usuário do projeto?",
+      "allUsersAssigned": "Todos os usuários já estão atribuídos a este projeto"
+    }
  }
 }
--- a/frontend/src/i18n/locales/pt/dashboard.json
+++ b/frontend/src/i18n/locales/pt/dashboard.json
@@ -13,7 +13,8 @@
  },
  "header": {
    "projects": "Projetos",
-    "admin": "Admin"
+    "admin": "Admin",
+    "searchPlaceholder": "Buscar requisitos por código ou nome..."
  },
  "projectDropdown": {
    "loading": "Carregando...",
--- a/frontend/src/pages/DashboardPage.tsx
+++ b/frontend/src/pages/DashboardPage.tsx
@@ -83,6 +83,9 @@ export default function DashboardPage() {
  const [error, setError] = useState<string | null>(null)
  const [hoveredGroup, setHoveredGroup] = useState<number | null>(null)
  
+  // Search state
+  const [searchQuery, setSearchQuery] = useState('')
+  
  // Project dropdown state
  const [showProjectDropdown, setShowProjectDropdown] = useState(false)
  const [showCreateProjectModal, setShowCreateProjectModal] = useState(false)
@@ -175,6 +178,15 @@ export default function DashboardPage() {
    navigate('/requirements')
  }

+  const handleSearch = (e: React.FormEvent) => {
+    e.preventDefault()
+    if (searchQuery.trim()) {
+      navigate('/requirements', { state: { searchQuery: searchQuery.trim() } })
+    } else {
+      navigate('/requirements')
+    }
+  }
+
  const handleCreateRequirementClick = () => {
    navigate('/requirements', { state: { openCreateModal: true } })
  }
@@ -261,17 +273,6 @@ export default function DashboardPage() {
            <p className="px-4 text-xs font-semibold text-slate-500 uppercase tracking-wider">{t('sidebar.navigation')}</p>
          </div>

-          {/* Search Requirements */}
-          <button
-            onClick={handleMyRequirementsClick}
-            className="w-full flex items-center gap-3 px-4 py-2.5 text-slate-300 hover:bg-slate-700 hover:text-white rounded-lg transition-colors"
-          >
-            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
-            </svg>
-            {t('sidebar.searchRequirements')}
-          </button>
-
          {/* My Requirements */}
          <button
            onClick={handleMyRequirementsClick}
@@ -388,6 +389,27 @@ export default function DashboardPage() {
              </div>
            </div>

+            {/* Search Bar */}
+            <form onSubmit={handleSearch} className="flex-1 max-w-md mx-8">
+              <div className="relative">
+                <input
+                  type="text"
+                  placeholder={t('header.searchPlaceholder')}
+                  value={searchQuery}
+                  onChange={(e) => setSearchQuery(e.target.value)}
+                  className="w-full pl-10 pr-4 py-2 border border-gray-300 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-teal-500 focus:border-transparent"
+                />
+                <svg 
+                  className="absolute left-3 top-1/2 transform -translate-y-1/2 w-4 h-4 text-gray-400" 
+                  fill="none" 
+                  stroke="currentColor" 
+                  viewBox="0 0 24 24"
+                >
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
+                </svg>
+              </div>
+            </form>
+
            {/* Right side utilities - grouped tighter */}
            <div className="flex items-center gap-4">
              {/* Language Selector */}
--- a/frontend/src/pages/RequirementsPage.tsx
+++ b/frontend/src/pages/RequirementsPage.tsx
@@ -141,8 +141,13 @@ export default function RequirementsPage() {
      // Clear the state so it doesn't reopen on refresh
      navigate(location.pathname, { replace: true, state: {} })
    }
+    // Handle search query from navigation state (from dashboard search bar)
+    if (location.state?.searchQuery) {
+      setSearchQuery(location.state.searchQuery)
+      navigate(location.pathname, { replace: true, state: {} })
+    }
    // Handle needs revalidation filter from navigation state
-    if (location.state?.needsRevalidation) {
+    else if (location.state?.needsRevalidation) {
      setNeedsRevalidationFilter(true)
      navigate(location.pathname, { replace: true, state: {} })
    }
--- a/frontend/src/pages/SuperAdminPage.tsx
+++ b/frontend/src/pages/SuperAdminPage.tsx
@@ -0,0 +1,987 @@
+import { useState, useEffect } from 'react'
+import { useTranslation } from 'react-i18next'
+import { useAuth } from '@/hooks'
+import { useNavigate } from 'react-router-dom'
+import { superAdminService, userService } from '@/services'
+import type { SystemUser, SystemProject, SystemProjectMember } from '@/services/superAdminService'
+import type { Role } from '@/services/userService'
+import { LanguageSelector } from '@/components'
+
+type TabType = 'users' | 'projects' | 'assignments'
+
+export default function SuperAdminPage() {
+  const { user, logout } = useAuth()
+  const navigate = useNavigate()
+  const { t } = useTranslation('admin')
+  const { t: tCommon } = useTranslation('common')
+  
+  const [activeTab, setActiveTab] = useState<TabType>('users')
+  
+  // Users state
+  const [users, setUsers] = useState<SystemUser[]>([])
+  const [usersLoading, setUsersLoading] = useState(true)
+  const [roles, setRoles] = useState<Role[]>([])
+  
+  // Projects state
+  const [projects, setProjects] = useState<SystemProject[]>([])
+  const [projectsLoading, setProjectsLoading] = useState(true)
+  
+  // Assignments state
+  const [selectedProject, setSelectedProject] = useState<SystemProject | null>(null)
+  const [projectMembers, setProjectMembers] = useState<SystemProjectMember[]>([])
+  const [membersLoading, setMembersLoading] = useState(false)
+  
+  // Modals
+  const [showCreateUserModal, setShowCreateUserModal] = useState(false)
+  const [showCreateProjectModal, setShowCreateProjectModal] = useState(false)
+  const [showAssignUserModal, setShowAssignUserModal] = useState(false)
+  
+  // Form state for create user
+  const [newUsername, setNewUsername] = useState('')
+  const [newEmail, setNewEmail] = useState('')
+  const [newPassword, setNewPassword] = useState('')
+  const [newFirstName, setNewFirstName] = useState('')
+  const [newLastName, setNewLastName] = useState('')
+  const [newRoleId, setNewRoleId] = useState(1)
+  const [createUserLoading, setCreateUserLoading] = useState(false)
+  const [createUserError, setCreateUserError] = useState<string | null>(null)
+  
+  // Form state for create project
+  const [newProjectName, setNewProjectName] = useState('')
+  const [newProjectDesc, setNewProjectDesc] = useState('')
+  const [createProjectLoading, setCreateProjectLoading] = useState(false)
+  const [createProjectError, setCreateProjectError] = useState<string | null>(null)
+  
+  // Form state for assign user
+  const [assignUserId, setAssignUserId] = useState<number | null>(null)
+  const [assignLoading, setAssignLoading] = useState(false)
+  const [assignError, setAssignError] = useState<string | null>(null)
+
+  // Check if user is super admin
+  useEffect(() => {
+    if (user && user.role_id !== 6) {
+      navigate('/dashboard')
+    }
+  }, [user, navigate])
+
+  // Fetch users and roles
+  useEffect(() => {
+    const fetchUsersAndRoles = async () => {
+      try {
+        setUsersLoading(true)
+        const [fetchedUsers, fetchedRoles] = await Promise.all([
+          superAdminService.getAllUsers(),
+          userService.getRoles()
+        ])
+        setUsers(fetchedUsers)
+        setRoles(fetchedRoles)
+      } catch (err) {
+        console.error('Failed to fetch users:', err)
+      } finally {
+        setUsersLoading(false)
+      }
+    }
+    fetchUsersAndRoles()
+  }, [])
+
+  // Fetch projects
+  useEffect(() => {
+    const fetchProjects = async () => {
+      try {
+        setProjectsLoading(true)
+        const fetchedProjects = await superAdminService.getAllProjects()
+        setProjects(fetchedProjects)
+      } catch (err) {
+        console.error('Failed to fetch projects:', err)
+      } finally {
+        setProjectsLoading(false)
+      }
+    }
+    fetchProjects()
+  }, [])
+
+  // Fetch project members when project is selected
+  useEffect(() => {
+    if (selectedProject) {
+      const fetchMembers = async () => {
+        try {
+          setMembersLoading(true)
+          const members = await superAdminService.getProjectMembers(selectedProject.id)
+          setProjectMembers(members)
+        } catch (err) {
+          console.error('Failed to fetch project members:', err)
+        } finally {
+          setMembersLoading(false)
+        }
+      }
+      fetchMembers()
+    } else {
+      setProjectMembers([])
+    }
+  }, [selectedProject])
+
+  const handleBlockUser = async (userId: number) => {
+    try {
+      await superAdminService.blockUser(userId)
+      setUsers(users.map(u => u.id === userId ? { ...u, is_enabled: false } : u))
+    } catch (err) {
+      console.error('Failed to block user:', err)
+      alert(err instanceof Error ? err.message : 'Failed to block user')
+    }
+  }
+
+  const handleUnblockUser = async (userId: number) => {
+    try {
+      await superAdminService.unblockUser(userId)
+      setUsers(users.map(u => u.id === userId ? { ...u, is_enabled: true } : u))
+    } catch (err) {
+      console.error('Failed to unblock user:', err)
+      alert(err instanceof Error ? err.message : 'Failed to unblock user')
+    }
+  }
+
+  const handleRoleChange = async (userId: number, newRoleId: number) => {
+    try {
+      const updatedUser = await superAdminService.updateUserRole(userId, { role_id: newRoleId })
+      setUsers(users.map(u => u.id === userId ? updatedUser : u))
+    } catch (err) {
+      console.error('Failed to update role:', err)
+      alert(err instanceof Error ? err.message : 'Failed to update role')
+    }
+  }
+
+  const handleCreateUser = async (e: React.FormEvent) => {
+    e.preventDefault()
+    
+    if (!newUsername.trim() || !newEmail.trim() || !newPassword.trim()) {
+      setCreateUserError('Username, email, and password are required')
+      return
+    }
+    
+    try {
+      setCreateUserLoading(true)
+      setCreateUserError(null)
+      
+      const newUser = await superAdminService.createUser({
+        username: newUsername.trim(),
+        email: newEmail.trim(),
+        password: newPassword,
+        first_name: newFirstName.trim() || undefined,
+        last_name: newLastName.trim() || undefined,
+        role_id: newRoleId
+      })
+      
+      setUsers([...users, newUser])
+      setShowCreateUserModal(false)
+      resetCreateUserForm()
+    } catch (err) {
+      console.error('Failed to create user:', err)
+      setCreateUserError(err instanceof Error ? err.message : 'Failed to create user')
+    } finally {
+      setCreateUserLoading(false)
+    }
+  }
+
+  const resetCreateUserForm = () => {
+    setNewUsername('')
+    setNewEmail('')
+    setNewPassword('')
+    setNewFirstName('')
+    setNewLastName('')
+    setNewRoleId(1)
+    setCreateUserError(null)
+  }
+
+  const handleCreateProject = async (e: React.FormEvent) => {
+    e.preventDefault()
+    
+    if (!newProjectName.trim()) {
+      setCreateProjectError('Project name is required')
+      return
+    }
+    
+    try {
+      setCreateProjectLoading(true)
+      setCreateProjectError(null)
+      
+      const newProject = await superAdminService.createProject({
+        project_name: newProjectName.trim(),
+        project_desc: newProjectDesc.trim() || undefined
+      })
+      
+      setProjects([...projects, newProject])
+      setShowCreateProjectModal(false)
+      setNewProjectName('')
+      setNewProjectDesc('')
+    } catch (err) {
+      console.error('Failed to create project:', err)
+      setCreateProjectError(err instanceof Error ? err.message : 'Failed to create project')
+    } finally {
+      setCreateProjectLoading(false)
+    }
+  }
+
+  const handleAssignUser = async (e: React.FormEvent) => {
+    e.preventDefault()
+    
+    if (!selectedProject || !assignUserId) {
+      setAssignError('Please select a user')
+      return
+    }
+    
+    try {
+      setAssignLoading(true)
+      setAssignError(null)
+      
+      await superAdminService.assignUserToProject(selectedProject.id, {
+        user_id: assignUserId
+      })
+      
+      // Refresh members
+      const members = await superAdminService.getProjectMembers(selectedProject.id)
+      setProjectMembers(members)
+      
+      // Update project member count
+      setProjects(projects.map(p => 
+        p.id === selectedProject.id 
+          ? { ...p, member_count: p.member_count + 1 } 
+          : p
+      ))
+      
+      setShowAssignUserModal(false)
+      setAssignUserId(null)
+    } catch (err) {
+      console.error('Failed to assign user:', err)
+      setAssignError(err instanceof Error ? err.message : 'Failed to assign user')
+    } finally {
+      setAssignLoading(false)
+    }
+  }
+
+  const handleRemoveFromProject = async (userId: number) => {
+    if (!selectedProject) return
+    
+    if (!confirm(t('superAdmin.assignments.confirmRemove'))) return
+    
+    try {
+      await superAdminService.removeUserFromProject(selectedProject.id, userId)
+      setProjectMembers(projectMembers.filter(m => m.user_id !== userId))
+      
+      // Update project member count
+      setProjects(projects.map(p => 
+        p.id === selectedProject.id 
+          ? { ...p, member_count: Math.max(0, p.member_count - 1) } 
+          : p
+      ))
+    } catch (err) {
+      console.error('Failed to remove user from project:', err)
+      alert(err instanceof Error ? err.message : 'Failed to remove user')
+    }
+  }
+
+  // Get users not in the selected project
+  const availableUsersForAssignment = users.filter(
+    u => !projectMembers.some(m => m.user_id === u.id)
+  )
+
+  return (
+    <div className="min-h-screen bg-gray-50 flex">
+      {/* Sidebar */}
+      <aside className="w-64 bg-slate-800 text-white flex-shrink-0 min-h-screen">
+        {/* Sidebar Header */}
+        <div className="p-6 border-b border-slate-700">
+          <h1 className="text-lg font-semibold text-amber-400">
+            {t('superAdmin.title')}
+          </h1>
+          <p className="text-sm text-slate-400">{t('superAdmin.subtitle')}</p>
+        </div>
+
+        {/* Navigation */}
+        <nav className="p-4 space-y-2">
+          <button
+            onClick={() => setActiveTab('users')}
+            className={`w-full flex items-center gap-3 px-4 py-2.5 rounded-lg transition-colors ${
+              activeTab === 'users'
+                ? 'bg-amber-600 text-white'
+                : 'text-slate-300 hover:bg-slate-700 hover:text-white'
+            }`}
+          >
+            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z" />
+            </svg>
+            {t('superAdmin.tabs.users')}
+          </button>
+
+          <button
+            onClick={() => setActiveTab('projects')}
+            className={`w-full flex items-center gap-3 px-4 py-2.5 rounded-lg transition-colors ${
+              activeTab === 'projects'
+                ? 'bg-amber-600 text-white'
+                : 'text-slate-300 hover:bg-slate-700 hover:text-white'
+            }`}
+          >
+            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 7v10a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-6l-2-2H5a2 2 0 00-2 2z" />
+            </svg>
+            {t('superAdmin.tabs.projects')}
+          </button>
+
+          <button
+            onClick={() => setActiveTab('assignments')}
+            className={`w-full flex items-center gap-3 px-4 py-2.5 rounded-lg transition-colors ${
+              activeTab === 'assignments'
+                ? 'bg-amber-600 text-white'
+                : 'text-slate-300 hover:bg-slate-700 hover:text-white'
+            }`}
+          >
+            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z" />
+            </svg>
+            {t('superAdmin.tabs.assignments')}
+          </button>
+        </nav>
+
+        {/* Stats */}
+        <div className="absolute bottom-0 left-0 w-64 p-4 border-t border-slate-700 bg-slate-900">
+          <p className="text-xs font-semibold text-slate-500 uppercase tracking-wider mb-3">
+            {t('superAdmin.systemStats')}
+          </p>
+          <div className="grid grid-cols-2 gap-2 text-center">
+            <div className="bg-slate-800 rounded p-2">
+              <p className="text-xl font-bold text-white">{users.length}</p>
+              <p className="text-xs text-slate-400">{t('superAdmin.totalUsers')}</p>
+            </div>
+            <div className="bg-slate-800 rounded p-2">
+              <p className="text-xl font-bold text-white">{projects.length}</p>
+              <p className="text-xs text-slate-400">{t('superAdmin.totalProjects')}</p>
+            </div>
+          </div>
+        </div>
+      </aside>
+
+      {/* Main Content */}
+      <div className="flex-1 flex flex-col">
+        {/* Top Bar */}
+        <header className="bg-white border-b border-gray-200 px-8 py-4">
+          <div className="flex items-center justify-between">
+            <div className="flex items-center gap-2">
+              <span className="text-sm text-gray-500">{t('superAdmin.systemManagement')}</span>
+            </div>
+
+            {/* Right side utilities */}
+            <div className="flex items-center gap-4">
+              <LanguageSelector compact />
+              <div className="h-6 w-px bg-gray-300"></div>
+              
+              {/* User Info */}
+              <div className="flex items-center gap-3">
+                <div className="flex items-center gap-2">
+                  <div className="w-8 h-8 bg-amber-100 rounded-full flex items-center justify-center">
+                    <svg className="w-4 h-4 text-amber-600" fill="currentColor" viewBox="0 0 20 20">
+                      <path fillRule="evenodd" d="M10 9a3 3 0 100-6 3 3 0 000 6zm-7 9a7 7 0 1114 0H3z" clipRule="evenodd" />
+                    </svg>
+                  </div>
+                  <div className="text-sm">
+                    <p className="font-medium text-gray-700">
+                      {user?.full_name || user?.preferred_username || 'Super Admin'}
+                    </p>
+                    <p className="text-xs text-amber-600 font-medium">{t('superAdmin.role')}</p>
+                  </div>
+                </div>
+                <button
+                  onClick={logout}
+                  className="p-2 text-gray-400 hover:text-gray-600 hover:bg-gray-100 rounded-lg transition-colors"
+                  title={tCommon('logout')}
+                >
+                  <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 16l4-4m0 0l-4-4m4 4H7m6 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h4a3 3 0 013 3v1" />
+                  </svg>
+                </button>
+              </div>
+            </div>
+          </div>
+        </header>
+
+        {/* Page Content */}
+        <main className="flex-1 p-8">
+          {/* Users Tab */}
+          {activeTab === 'users' && (
+            <div>
+              <div className="flex items-center justify-between mb-6">
+                <h2 className="text-xl font-semibold text-gray-800">
+                  {t('superAdmin.users.title')}
+                </h2>
+                <button
+                  onClick={() => setShowCreateUserModal(true)}
+                  className="flex items-center gap-2 px-4 py-2 bg-amber-600 text-white rounded-lg hover:bg-amber-700 transition-colors"
+                >
+                  <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
+                  </svg>
+                  {t('superAdmin.users.createUser')}
+                </button>
+              </div>
+
+              {usersLoading ? (
+                <div className="flex justify-center py-12">
+                  <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-amber-600"></div>
+                </div>
+              ) : (
+                <div className="bg-white rounded-lg shadow overflow-hidden">
+                  <table className="min-w-full divide-y divide-gray-200">
+                    <thead className="bg-gray-50">
+                      <tr>
+                        <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                          {t('superAdmin.users.username')}
+                        </th>
+                        <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                          {t('superAdmin.users.role')}
+                        </th>
+                        <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                          {t('superAdmin.users.status')}
+                        </th>
+                        <th className="px-6 py-3 text-right text-xs font-medium text-gray-500 uppercase tracking-wider">
+                          {t('superAdmin.users.actions')}
+                        </th>
+                      </tr>
+                    </thead>
+                    <tbody className="bg-white divide-y divide-gray-200">
+                      {users.map((u) => (
+                        <tr key={u.id} className={!u.is_enabled ? 'bg-red-50' : ''}>
+                          <td className="px-6 py-4 whitespace-nowrap">
+                            <div className="flex items-center gap-3">
+                              <div className="w-8 h-8 bg-gray-100 rounded-full flex items-center justify-center">
+                                <span className="text-sm font-medium text-gray-600">
+                                  {(u.username || u.sub).charAt(0).toUpperCase()}
+                                </span>
+                              </div>
+                              <div>
+                                <div className="text-sm font-medium text-gray-900">
+                                  {u.username || u.sub}
+                                  {u.id === user?.db_user_id && (
+                                    <span className="ml-2 text-xs bg-amber-100 text-amber-800 px-2 py-0.5 rounded">
+                                      {t('superAdmin.users.you')}
+                                    </span>
+                                  )}
+                                </div>
+                                {u.full_name && (
+                                  <div className="text-xs text-gray-500">{u.full_name}</div>
+                                )}
+                              </div>
+                            </div>
+                          </td>
+                          <td className="px-6 py-4 whitespace-nowrap">
+                            <select
+                              value={u.role_id}
+                              onChange={(e) => handleRoleChange(u.id, parseInt(e.target.value))}
+                              disabled={u.id === user?.db_user_id}
+                              className="text-sm border border-gray-300 rounded px-2 py-1 disabled:opacity-50 disabled:cursor-not-allowed"
+                            >
+                              {roles.map((role) => (
+                                <option key={role.id} value={role.id}>
+                                  {role.display_name}
+                                </option>
+                              ))}
+                            </select>
+                          </td>
+                          <td className="px-6 py-4 whitespace-nowrap">
+                            <span className={`px-2 py-1 text-xs font-medium rounded ${
+                              u.is_enabled 
+                                ? 'bg-green-100 text-green-800' 
+                                : 'bg-red-100 text-red-800'
+                            }`}>
+                              {u.is_enabled ? t('superAdmin.users.active') : t('superAdmin.users.blocked')}
+                            </span>
+                          </td>
+                          <td className="px-6 py-4 whitespace-nowrap text-right">
+                            {u.id !== user?.db_user_id && (
+                              <button
+                                onClick={() => u.is_enabled ? handleBlockUser(u.id) : handleUnblockUser(u.id)}
+                                className={`text-sm font-medium ${
+                                  u.is_enabled 
+                                    ? 'text-red-600 hover:text-red-800' 
+                                    : 'text-green-600 hover:text-green-800'
+                                }`}
+                              >
+                                {u.is_enabled ? t('superAdmin.users.block') : t('superAdmin.users.unblock')}
+                              </button>
+                            )}
+                          </td>
+                        </tr>
+                      ))}
+                    </tbody>
+                  </table>
+                </div>
+              )}
+            </div>
+          )}
+
+          {/* Projects Tab */}
+          {activeTab === 'projects' && (
+            <div>
+              <div className="flex items-center justify-between mb-6">
+                <h2 className="text-xl font-semibold text-gray-800">
+                  {t('superAdmin.projects.title')}
+                </h2>
+                <button
+                  onClick={() => setShowCreateProjectModal(true)}
+                  className="flex items-center gap-2 px-4 py-2 bg-amber-600 text-white rounded-lg hover:bg-amber-700 transition-colors"
+                >
+                  <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
+                  </svg>
+                  {t('superAdmin.projects.createProject')}
+                </button>
+              </div>
+
+              {projectsLoading ? (
+                <div className="flex justify-center py-12">
+                  <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-amber-600"></div>
+                </div>
+              ) : projects.length === 0 ? (
+                <div className="text-center py-12 bg-white rounded-lg shadow">
+                  <svg className="w-12 h-12 text-gray-300 mx-auto mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 7v10a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-6l-2-2H5a2 2 0 00-2 2z" />
+                  </svg>
+                  <p className="text-gray-500">{t('superAdmin.projects.noProjects')}</p>
+                </div>
+              ) : (
+                <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+                  {projects.map((project) => (
+                    <div key={project.id} className="bg-white rounded-lg shadow p-6">
+                      <div className="flex items-start justify-between mb-4">
+                        <div>
+                          <h3 className="font-semibold text-gray-800">{project.project_name}</h3>
+                          {project.project_desc && (
+                            <p className="text-sm text-gray-500 mt-1 line-clamp-2">
+                              {project.project_desc}
+                            </p>
+                          )}
+                        </div>
+                        <span className="bg-gray-100 text-gray-700 px-2 py-1 rounded text-xs font-medium">
+                          {project.member_count} {t('superAdmin.projects.members')}
+                        </span>
+                      </div>
+                      <button
+                        onClick={() => {
+                          setSelectedProject(project)
+                          setActiveTab('assignments')
+                        }}
+                        className="text-sm text-amber-600 hover:text-amber-800 font-medium"
+                      >
+                        {t('superAdmin.projects.manageMembers')} →
+                      </button>
+                    </div>
+                  ))}
+                </div>
+              )}
+            </div>
+          )}
+
+          {/* Assignments Tab */}
+          {activeTab === 'assignments' && (
+            <div>
+              <h2 className="text-xl font-semibold text-gray-800 mb-6">
+                {t('superAdmin.assignments.title')}
+              </h2>
+
+              {/* Project Selector */}
+              <div className="mb-6">
+                <label className="block text-sm font-medium text-gray-700 mb-2">
+                  {t('superAdmin.assignments.selectProject')}
+                </label>
+                <select
+                  value={selectedProject?.id || ''}
+                  onChange={(e) => {
+                    const projectId = parseInt(e.target.value)
+                    setSelectedProject(projects.find(p => p.id === projectId) || null)
+                  }}
+                  className="w-full max-w-md border border-gray-300 rounded-lg px-4 py-2"
+                >
+                  <option value="">{t('superAdmin.assignments.chooseProject')}</option>
+                  {projects.map((project) => (
+                    <option key={project.id} value={project.id}>
+                      {project.project_name} ({project.member_count} {t('superAdmin.projects.members')})
+                    </option>
+                  ))}
+                </select>
+              </div>
+
+              {selectedProject && (
+                <div className="bg-white rounded-lg shadow">
+                  <div className="px-6 py-4 border-b border-gray-200 flex items-center justify-between">
+                    <div>
+                      <h3 className="font-semibold text-gray-800">{selectedProject.project_name}</h3>
+                      <p className="text-sm text-gray-500">
+                        {projectMembers.length} {t('superAdmin.projects.members')}
+                      </p>
+                    </div>
+                    <button
+                      onClick={() => setShowAssignUserModal(true)}
+                      className="flex items-center gap-2 px-4 py-2 bg-amber-600 text-white rounded-lg hover:bg-amber-700 transition-colors text-sm"
+                    >
+                      <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
+                      </svg>
+                      {t('superAdmin.assignments.addMember')}
+                    </button>
+                  </div>
+
+                  {membersLoading ? (
+                    <div className="flex justify-center py-12">
+                      <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-amber-600"></div>
+                    </div>
+                  ) : projectMembers.length === 0 ? (
+                    <div className="text-center py-12">
+                      <p className="text-gray-500">{t('superAdmin.assignments.noMembers')}</p>
+                    </div>
+                  ) : (
+                    <table className="min-w-full divide-y divide-gray-200">
+                      <thead className="bg-gray-50">
+                        <tr>
+                          <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                            {t('superAdmin.users.username')}
+                          </th>
+                          <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                            {t('superAdmin.users.role')}
+                          </th>
+                          <th className="px-6 py-3 text-right text-xs font-medium text-gray-500 uppercase tracking-wider">
+                            {t('superAdmin.users.actions')}
+                          </th>
+                        </tr>
+                      </thead>
+                      <tbody className="bg-white divide-y divide-gray-200">
+                        {projectMembers.map((member) => (
+                          <tr key={member.user_id}>
+                            <td className="px-6 py-4 whitespace-nowrap">
+                              <div className="text-sm font-medium text-gray-900">
+                                {member.username || `User ${member.user_id}`}
+                              </div>
+                              {member.full_name && (
+                                <div className="text-xs text-gray-500">{member.full_name}</div>
+                              )}
+                            </td>
+                            <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
+                              {member.role_name}
+                            </td>
+                            <td className="px-6 py-4 whitespace-nowrap text-right">
+                              <button
+                                onClick={() => handleRemoveFromProject(member.user_id)}
+                                className="text-sm font-medium text-red-600 hover:text-red-800"
+                              >
+                                {t('superAdmin.assignments.remove')}
+                              </button>
+                            </td>
+                          </tr>
+                        ))}
+                      </tbody>
+                    </table>
+                  )}
+                </div>
+              )}
+            </div>
+          )}
+        </main>
+      </div>
+
+      {/* Create User Modal */}
+      {showCreateUserModal && (
+        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="flex items-center justify-between px-6 py-4 border-b border-gray-200">
+              <h2 className="text-xl font-semibold text-gray-800">{t('createUserModal.title')}</h2>
+              <button
+                onClick={() => {
+                  setShowCreateUserModal(false)
+                  resetCreateUserForm()
+                }}
+                className="text-gray-400 hover:text-gray-600"
+              >
+                <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+                </svg>
+              </button>
+            </div>
+
+            <form onSubmit={handleCreateUser}>
+              <div className="px-6 py-4 space-y-4">
+                {createUserError && (
+                  <div className="p-3 bg-red-100 border border-red-400 text-red-700 rounded text-sm">
+                    {createUserError}
+                  </div>
+                )}
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('createUserModal.username')} <span className="text-red-500">*</span>
+                  </label>
+                  <input
+                    type="text"
+                    value={newUsername}
+                    onChange={(e) => setNewUsername(e.target.value)}
+                    placeholder={t('createUserModal.usernamePlaceholder')}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    required
+                  />
+                </div>
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('createUserModal.email')} <span className="text-red-500">*</span>
+                  </label>
+                  <input
+                    type="email"
+                    value={newEmail}
+                    onChange={(e) => setNewEmail(e.target.value)}
+                    placeholder={t('createUserModal.emailPlaceholder')}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    required
+                  />
+                </div>
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('createUserModal.temporaryPassword')} <span className="text-red-500">*</span>
+                  </label>
+                  <input
+                    type="password"
+                    value={newPassword}
+                    onChange={(e) => setNewPassword(e.target.value)}
+                    placeholder={t('createUserModal.passwordPlaceholder')}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    required
+                  />
+                  <p className="text-xs text-gray-500 mt-1">{t('createUserModal.passwordHint')}</p>
+                </div>
+
+                <div className="grid grid-cols-2 gap-4">
+                  <div>
+                    <label className="block text-sm font-medium text-gray-700 mb-1">
+                      {t('createUserModal.firstName')}
+                    </label>
+                    <input
+                      type="text"
+                      value={newFirstName}
+                      onChange={(e) => setNewFirstName(e.target.value)}
+                      className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    />
+                  </div>
+                  <div>
+                    <label className="block text-sm font-medium text-gray-700 mb-1">
+                      {t('createUserModal.lastName')}
+                    </label>
+                    <input
+                      type="text"
+                      value={newLastName}
+                      onChange={(e) => setNewLastName(e.target.value)}
+                      className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    />
+                  </div>
+                </div>
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('createUserModal.role')}
+                  </label>
+                  <select
+                    value={newRoleId}
+                    onChange={(e) => setNewRoleId(parseInt(e.target.value))}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                  >
+                    {roles.map((role) => (
+                      <option key={role.id} value={role.id}>
+                        {role.display_name}
+                      </option>
+                    ))}
+                  </select>
+                </div>
+              </div>
+
+              <div className="flex justify-end gap-3 px-6 py-4 border-t border-gray-200 bg-gray-50 rounded-b-lg">
+                <button
+                  type="button"
+                  onClick={() => {
+                    setShowCreateUserModal(false)
+                    resetCreateUserForm()
+                  }}
+                  className="px-4 py-2 border border-gray-400 rounded text-sm font-medium text-gray-700 hover:bg-gray-100"
+                  disabled={createUserLoading}
+                >
+                  {tCommon('cancel')}
+                </button>
+                <button
+                  type="submit"
+                  className="px-4 py-2 bg-amber-600 text-white rounded text-sm font-medium hover:bg-amber-700 disabled:opacity-50"
+                  disabled={createUserLoading}
+                >
+                  {createUserLoading ? tCommon('loading') : t('createUserModal.createButton')}
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+
+      {/* Create Project Modal */}
+      {showCreateProjectModal && (
+        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="flex items-center justify-between px-6 py-4 border-b border-gray-200">
+              <h2 className="text-xl font-semibold text-gray-800">{t('superAdmin.projects.createProject')}</h2>
+              <button
+                onClick={() => {
+                  setShowCreateProjectModal(false)
+                  setNewProjectName('')
+                  setNewProjectDesc('')
+                  setCreateProjectError(null)
+                }}
+                className="text-gray-400 hover:text-gray-600"
+              >
+                <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+                </svg>
+              </button>
+            </div>
+
+            <form onSubmit={handleCreateProject}>
+              <div className="px-6 py-4 space-y-4">
+                {createProjectError && (
+                  <div className="p-3 bg-red-100 border border-red-400 text-red-700 rounded text-sm">
+                    {createProjectError}
+                  </div>
+                )}
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('superAdmin.projects.projectName')} <span className="text-red-500">*</span>
+                  </label>
+                  <input
+                    type="text"
+                    value={newProjectName}
+                    onChange={(e) => setNewProjectName(e.target.value)}
+                    placeholder={t('superAdmin.projects.projectNamePlaceholder')}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    required
+                  />
+                </div>
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('superAdmin.projects.description')}
+                  </label>
+                  <textarea
+                    value={newProjectDesc}
+                    onChange={(e) => setNewProjectDesc(e.target.value)}
+                    placeholder={t('superAdmin.projects.descriptionPlaceholder')}
+                    rows={3}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm resize-none"
+                  />
+                </div>
+              </div>
+
+              <div className="flex justify-end gap-3 px-6 py-4 border-t border-gray-200 bg-gray-50 rounded-b-lg">
+                <button
+                  type="button"
+                  onClick={() => {
+                    setShowCreateProjectModal(false)
+                    setNewProjectName('')
+                    setNewProjectDesc('')
+                    setCreateProjectError(null)
+                  }}
+                  className="px-4 py-2 border border-gray-400 rounded text-sm font-medium text-gray-700 hover:bg-gray-100"
+                  disabled={createProjectLoading}
+                >
+                  {tCommon('cancel')}
+                </button>
+                <button
+                  type="submit"
+                  className="px-4 py-2 bg-amber-600 text-white rounded text-sm font-medium hover:bg-amber-700 disabled:opacity-50"
+                  disabled={createProjectLoading}
+                >
+                  {createProjectLoading ? tCommon('loading') : t('superAdmin.projects.create')}
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+
+      {/* Assign User Modal */}
+      {showAssignUserModal && selectedProject && (
+        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+          <div className="bg-white rounded-lg shadow-xl w-full max-w-md mx-4">
+            <div className="flex items-center justify-between px-6 py-4 border-b border-gray-200">
+              <h2 className="text-xl font-semibold text-gray-800">{t('superAdmin.assignments.addMember')}</h2>
+              <button
+                onClick={() => {
+                  setShowAssignUserModal(false)
+                  setAssignUserId(null)
+                  setAssignError(null)
+                }}
+                className="text-gray-400 hover:text-gray-600"
+              >
+                <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+                </svg>
+              </button>
+            </div>
+
+            <form onSubmit={handleAssignUser}>
+              <div className="px-6 py-4 space-y-4">
+                {assignError && (
+                  <div className="p-3 bg-red-100 border border-red-400 text-red-700 rounded text-sm">
+                    {assignError}
+                  </div>
+                )}
+
+                <div>
+                  <label className="block text-sm font-medium text-gray-700 mb-1">
+                    {t('superAdmin.assignments.selectUser')} <span className="text-red-500">*</span>
+                  </label>
+                  <select
+                    value={assignUserId || ''}
+                    onChange={(e) => setAssignUserId(parseInt(e.target.value) || null)}
+                    className="w-full px-3 py-2 border border-gray-300 rounded text-sm"
+                    required
+                  >
+                    <option value="">{t('superAdmin.assignments.chooseUser')}</option>
+                    {availableUsersForAssignment.map((u) => (
+                      <option key={u.id} value={u.id}>
+                        {u.username || u.sub} {u.full_name ? `(${u.full_name})` : ''} - {u.role_display_name}
+                      </option>
+                    ))}
+                  </select>
+                  {availableUsersForAssignment.length === 0 && (
+                    <p className="text-xs text-gray-500 mt-1">{t('superAdmin.assignments.allUsersAssigned')}</p>
+                  )}
+                </div>
+              </div>
+
+              <div className="flex justify-end gap-3 px-6 py-4 border-t border-gray-200 bg-gray-50 rounded-b-lg">
+                <button
+                  type="button"
+                  onClick={() => {
+                    setShowAssignUserModal(false)
+                    setAssignUserId(null)
+                    setAssignError(null)
+                  }}
+                  className="px-4 py-2 border border-gray-400 rounded text-sm font-medium text-gray-700 hover:bg-gray-100"
+                  disabled={assignLoading}
+                >
+                  {tCommon('cancel')}
+                </button>
+                <button
+                  type="submit"
+                  className="px-4 py-2 bg-amber-600 text-white rounded text-sm font-medium hover:bg-amber-700 disabled:opacity-50"
+                  disabled={assignLoading || availableUsersForAssignment.length === 0}
+                >
+                  {assignLoading ? tCommon('loading') : t('superAdmin.assignments.assign')}
+                </button>
+              </div>
+            </form>
+          </div>
+        </div>
+      )}
+    </div>
+  )
+}
--- a/frontend/src/pages/index.ts
+++ b/frontend/src/pages/index.ts
@@ -3,3 +3,4 @@ export { default as DashboardPage } from './DashboardPage'
 export { default as RequirementsPage } from './RequirementsPage'
 export { default as RequirementDetailPage } from './RequirementDetailPage'
 export { default as AdminPage } from './AdminPage'
+export { default as SuperAdminPage } from './SuperAdminPage'
--- a/frontend/src/services/index.ts
+++ b/frontend/src/services/index.ts
@@ -23,3 +23,11 @@ export type {
 export { userService } from './userService'
 export type { Role, ProjectMember, UserRoleUpdateRequest } from './userService'
 export { commentService } from './commentService'
+export { superAdminService } from './superAdminService'
+export type { 
+  SystemUser, 
+  SystemProject, 
+  SystemProjectMember,
+  CreateUserRequest as SuperAdminCreateUserRequest,
+  CreateProjectRequest as SuperAdminCreateProjectRequest
+} from './superAdminService'
--- a/frontend/src/services/superAdminService.ts
+++ b/frontend/src/services/superAdminService.ts
@@ -0,0 +1,239 @@
+/**
+ * Service for Super Admin API operations.
+ * These endpoints are restricted to users with role_id=6 (super_admin).
+ */
+
+const API_BASE = '/api/admin/system'
+
+// Types
+export interface SystemUser {
+  id: number
+  sub: string
+  username: string | null
+  full_name: string | null
+  role_id: number
+  role_name: string
+  role_display_name: string
+  is_enabled: boolean
+  created_at: string | null
+}
+
+export interface SystemProject {
+  id: number
+  project_name: string
+  project_desc: string | null
+  member_count: number
+  created_at: string | null
+}
+
+export interface SystemProjectMember {
+  user_id: number
+  username: string | null
+  full_name: string | null
+  role_id: number
+  role_name: string
+  joined_at: string | null
+}
+
+export interface CreateUserRequest {
+  username: string
+  email: string
+  password: string
+  first_name?: string
+  last_name?: string
+  role_id: number
+}
+
+export interface CreateProjectRequest {
+  project_name: string
+  project_desc?: string
+}
+
+export interface AssignUserRequest {
+  user_id: number
+  role_id?: number
+}
+
+export interface UpdateRoleRequest {
+  role_id: number
+}
+
+// API Functions
+export const superAdminService = {
+  /**
+   * Get all users in the system
+   */
+  async getAllUsers(): Promise<SystemUser[]> {
+    const response = await fetch(`${API_BASE}/users`, {
+      credentials: 'include',
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to fetch users' }))
+      throw new Error(error.detail || 'Failed to fetch users')
+    }
+    
+    return response.json()
+  },
+
+  /**
+   * Get all projects in the system
+   */
+  async getAllProjects(): Promise<SystemProject[]> {
+    const response = await fetch(`${API_BASE}/projects`, {
+      credentials: 'include',
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to fetch projects' }))
+      throw new Error(error.detail || 'Failed to fetch projects')
+    }
+    
+    return response.json()
+  },
+
+  /**
+   * Create a new project
+   */
+  async createProject(data: CreateProjectRequest): Promise<SystemProject> {
+    const response = await fetch(`${API_BASE}/projects`, {
+      method: 'POST',
+      credentials: 'include',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(data),
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to create project' }))
+      throw new Error(error.detail || 'Failed to create project')
+    }
+    
+    return response.json()
+  },
+
+  /**
+   * Get members of a project
+   */
+  async getProjectMembers(projectId: number): Promise<SystemProjectMember[]> {
+    const response = await fetch(`${API_BASE}/projects/${projectId}/members`, {
+      credentials: 'include',
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to fetch project members' }))
+      throw new Error(error.detail || 'Failed to fetch project members')
+    }
+    
+    return response.json()
+  },
+
+  /**
+   * Assign a user to a project
+   */
+  async assignUserToProject(projectId: number, data: AssignUserRequest): Promise<void> {
+    const response = await fetch(`${API_BASE}/projects/${projectId}/members`, {
+      method: 'POST',
+      credentials: 'include',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(data),
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to assign user to project' }))
+      throw new Error(error.detail || 'Failed to assign user to project')
+    }
+  },
+
+  /**
+   * Remove a user from a project
+   */
+  async removeUserFromProject(projectId: number, userId: number): Promise<void> {
+    const response = await fetch(`${API_BASE}/projects/${projectId}/members/${userId}`, {
+      method: 'DELETE',
+      credentials: 'include',
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to remove user from project' }))
+      throw new Error(error.detail || 'Failed to remove user from project')
+    }
+  },
+
+  /**
+   * Block a user (disable in Keycloak)
+   */
+  async blockUser(userId: number): Promise<void> {
+    const response = await fetch(`${API_BASE}/users/${userId}/block`, {
+      method: 'PUT',
+      credentials: 'include',
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to block user' }))
+      throw new Error(error.detail || 'Failed to block user')
+    }
+  },
+
+  /**
+   * Unblock a user (enable in Keycloak)
+   */
+  async unblockUser(userId: number): Promise<void> {
+    const response = await fetch(`${API_BASE}/users/${userId}/unblock`, {
+      method: 'PUT',
+      credentials: 'include',
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to unblock user' }))
+      throw new Error(error.detail || 'Failed to unblock user')
+    }
+  },
+
+  /**
+   * Update a user's role
+   */
+  async updateUserRole(userId: number, data: UpdateRoleRequest): Promise<SystemUser> {
+    const response = await fetch(`${API_BASE}/users/${userId}/role`, {
+      method: 'PUT',
+      credentials: 'include',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(data),
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to update user role' }))
+      throw new Error(error.detail || 'Failed to update user role')
+    }
+    
+    return response.json()
+  },
+
+  /**
+   * Create a new user
+   */
+  async createUser(data: CreateUserRequest): Promise<SystemUser> {
+    const response = await fetch(`${API_BASE}/users`, {
+      method: 'POST',
+      credentials: 'include',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(data),
+    })
+    
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ detail: 'Failed to create user' }))
+      throw new Error(error.detail || 'Failed to create user')
+    }
+    
+    return response.json()
+  },
+}
+
+export default superAdminService