NazmulBhuiyanBD/Employee_Management_System ? reverse-engineered prompt

Build me a Flutter employee management app with an admin side and an employee side, connected to an ASP.NET Core backend API.

I want the admin to be able to log in with email and password, see all employees in a simple list or table, add new employees, edit or delete them, and open a full profile for each one. The admin should also be able to manage departments and handle employee leave requests by adding, updating, and deleting them. For employees, I want them to be able to log in, view their own profile, and update basic details like name, email, phone, date of birth, gender, address, salary, and department.

Make the app responsive, include dark and light mode, use date pickers where needed, and show clear success or error messages with snack bars. If anything is unclear, look up current Flutter and API docs online if you need to.