public function create()
{
    $roles = \Spatie\Permission\Models\Role::all();
    return view('superadmin.create-user', compact('roles'));
}

public function store(Request $request)
{
    $data = $request->validate([
        'name'     => 'required|string|max:255',
        'email'    => 'required|email|unique:users,email',
        'password' => 'required|string|min:6|confirmed',
        'role'     => 'required|string|exists:roles,name',
    ]);

    $user = \App\Models\User::create([
        'name'     => $data['name'],
        'email'    => $data['email'],
        'password' => bcrypt($data['password']),
    ]);

    $user->assignRole($data['role']);

    return redirect()->route('superadmin.users.index')->with('success', 'User created successfully!');
}