practice/practiceApplicaiton/LoginPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="practiceApplicaiton.LoginPage"
             Title="Вход в систему"
             BackgroundColor="#F5F7FA">
    <VerticalStackLayout Padding="60" Spacing="20" VerticalOptions="Center">

        <Label Text="Гостиничный корпус"
               FontSize="28" FontAttributes="Bold"
               HorizontalOptions="Center" TextColor="#2E4057"/>

        <Label Text="Вход в систему" FontSize="16"
               HorizontalOptions="Center" TextColor="#666"/>

        <Frame BackgroundColor="LightGray" CornerRadius="12" Padding="24"
               BorderColor="#E0E0E0" HasShadow="True">
            <VerticalStackLayout Spacing="16">

                <Label Text="Роль" FontAttributes="Bold" TextColor="#2E4057"/>
                <Picker x:Name="RolePicker" Title="Выберите роль">
                    <Picker.Items>
                        <x:String>Администратор</x:String>
                        <x:String>Менеджер</x:String>
                    </Picker.Items>
                </Picker>

                <Label Text="Пароль" FontAttributes="Bold" TextColor="#2E4057"/>
                <Entry x:Name="PasswordEntry" IsPassword="True"
                       Placeholder="Введите пароль"
                       ReturnCommand="{Binding LoginCommand}"/>

                <Label x:Name="ErrorLabel" TextColor="Red"
                       IsVisible="False" HorizontalOptions="Center"/>

                <Button x:Name="LoginButton"
                        Text="Войти"
                        BackgroundColor="#4472C4"
                        TextColor="White"
                        CornerRadius="8"
                        Clicked="OnLoginClicked"/>
            </VerticalStackLayout>
        </Frame>

    </VerticalStackLayout>
</ContentPage>