new ui and added another error window for wrong login

Project.Persistence/SQLite.cs

@@ -5,9 +5,9 @@ namespace Project.Persistence;
 public partial class SQLite
 {
     //filepath for home-pc:
-    private static string _dbPath = "C:/Users/Soi/Desktop/keywi.db";
+    //private static string _dbPath = "C:/Users/Soi/Desktop/keywi.db";
     //filepath for work-laptop:
-    //private static string _dbPath = "C:/Users/lowns/Desktop/keywi.db";
+    private static string _dbPath = "C:/Users/lowns/Desktop/keywi.db";
     //KLASSENVARIABLEN ERSTELLEN
     //private static string loginname;
     

Project.View/Login Page/LoginPage.axaml

@@ -2,50 +2,74 @@
     x:Class="Project.View.LoginPage"
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    <Grid Background="SandyBrown">
-        <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
+
+    <UserControl.Styles>
+        <Style Selector="Button">
+            <Setter Property="Width" Value="200" />
+            <Setter Property="Height" Value="40" />
+            <Setter Property="CornerRadius" Value="20" />
+            <Setter Property="Margin" Value="0,8" />
+            <Setter Property="HorizontalAlignment" Value="Center" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="Background" Value="#4CAF50" />
+            <Setter Property="Foreground" Value="White" />
+        </Style>
+    </UserControl.Styles>
+
+    <Grid>
+        <Grid.Background>
+            <LinearGradientBrush EndPoint="1,1" StartPoint="0,0">
+                <GradientStop Color="White" Offset="0" />
+                <GradientStop Color="LightGray" Offset="1" />
+            </LinearGradientBrush>
+        </Grid.Background>
+
+        <Border
+            Background="White"
+            BoxShadow="0 4 8 0 #40000000"
+            CornerRadius="8"
+            Padding="20"
+            Width="400">
+
+            <StackPanel>
                 <Image
-                Height="400"
+                    Height="150"
+                    Margin="0,0,0,20"
                     Source="avares://Project.View/Images/keywi_logo_2.png"
-                Width="400" />
-        </StackPanel>
-        <StackPanel
+                    Width="150" />
+
+                <TextBlock
+                    FontSize="24"
+                    FontWeight="Bold"
                     HorizontalAlignment="Center"
-            Orientation="Vertical"
-            VerticalAlignment="Center">
-            <TextBlock>Your Login Name:</TextBlock>
+                    Margin="0,0,0,20"
+                    Text="Login-Page" />
+
+                <TextBlock Text="Username:" />
                 <TextBox
                     TextWrapping="Wrap"
-                Watermark="Login-Name"
+                    Watermark="Your Username"
                     x:Name="LoginNameBox" />
 
-            <TextBlock>Password:</TextBlock>
-
-
+                <TextBlock Text="Password:" />
                 <TextBox
-                PasswordChar="*"
+                    PasswordChar="•"
                     TextWrapping="Wrap"
-                Watermark="Password"
+                    Watermark="Enter password"
                     x:Name="LoginPasswordBox" />
-            <Button
-                BorderBrush="Black"
-                BorderThickness="1"
-                Click="LoginButtonOnClick"
-                HorizontalAlignment="Center"
-                Margin="20"
-                Name="ConfirmButton">
-                LOGIN
+
+                <Button Click="LoginButtonOnClick" Name="ConfirmButton">
+                    Login
                 </Button>
+
                 <Button
-                BorderBrush="Black"
-                BorderThickness="1"
+                    Background="#FF9800"
                     Click="NewUserButtonOnClick"
-                HorizontalAlignment="Center"
-                Margin="20"
                     Name="NewUserButton">
-                Create New User
+                    New User
                 </Button>
             </StackPanel>
+        </Border>
     </Grid>
-
 </UserControl>

Project.View/Login Page/LoginPage.axaml.cs

@@ -25,7 +25,7 @@ public partial class LoginPage : UserControl
         string? loginName = LoginNameBox.Text ??  string.Empty;
         string? loginPassword = LoginPasswordBox.Text ??  string.Empty;
         bool allowLogin = AppController.CompareLogin(loginName, loginPassword);
-        var newPopUp = new PopUp();
+        var newPopUp = new LoginErrorPopUp();
         if (allowLogin)
         {
             //show menuview

Project.View/LoginErrorPopup/LoginPageError.axaml

@@ -0,0 +1,56 @@
+<Window
+    SizeToContent="Height"
+    Title="WARNING"
+    Width="500"
+    WindowStartupLocation="CenterOwner"
+    x:Class="Project.View.LoginErrorPopUp"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <Window.Styles>
+        <Style Selector="TextBlock">
+            <Setter Property="HorizontalAlignment" Value="Center" />
+            <Setter Property="FontSize" Value="14" />
+            <Setter Property="Foreground" Value="Gray" />
+            <Setter Property="TextWrapping" Value="Wrap" />
+            <Setter Property="Margin" Value="0,5" />
+        </Style>
+        <Style Selector="Button">
+            <Setter Property="Width" Value="120" />
+            <Setter Property="Height" Value="40" />
+            <Setter Property="CornerRadius" Value="20" />
+            <Setter Property="Margin" Value="0,15,0,0" />
+            <Setter Property="HorizontalAlignment" Value="Center" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="Background" Value="#4CAF50" />
+            <Setter Property="Foreground" Value="White" />
+        </Style>
+    </Window.Styles>
+
+    <Grid Background="#F5F5F5">
+        <Border
+            Background="White"
+            BoxShadow="0 4 8 0 #40000000"
+            CornerRadius="8"
+            Margin="15">
+
+            <ScrollViewer>
+                <StackPanel Margin="20" MaxWidth="450">
+                    <TextBlock
+                        FontSize="24"
+                        FontWeight="Bold"
+                        Margin="0,0,0,15"
+                        Text="⚠️ Warning" />
+                    <TextBlock Text="One or more entries are wrong or missing." />
+                    <TextBlock Text="Your username and password do not match." />
+
+                    <Button
+                        Click="LoginError_Click"
+                        Content="OK"
+                        Margin="0,15,0,5" />
+                </StackPanel>
+            </ScrollViewer>
+        </Border>
+    </Grid>
+</Window>

Project.View/LoginErrorPopup/LoginPageError.axaml.cs

@@ -0,0 +1,22 @@
+using System;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Media;
+using Project.Controller;
+using Project.Model;
+using Project.Persistence;
+namespace Project.View;
+
+public partial class LoginErrorPopUp : Window
+
+{
+    public LoginErrorPopUp()
+    {
+        InitializeComponent();
+    }
+
+    private void LoginError_Click(object? sender, RoutedEventArgs e)
+    {
+        Close();
+    }
+}

Project.View/MenuView/MenuView.axaml

@@ -2,103 +2,114 @@
     x:Class="Project.View.MenuView"
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <UserControl.Styles>
+        <Style Selector="TextBlock">
+            <Setter Property="FontSize" Value="16" />
+            <Setter Property="Margin" Value="0,10" />
+        </Style>
+        <Style Selector="TextBox">
+            <Setter Property="Height" Value="35" />
+            <Setter Property="Margin" Value="0,5,0,10" />
+            <Setter Property="CornerRadius" Value="4" />
+            <Setter Property="TextWrapping" Value="Wrap" />
+        </Style>
+        <Style Selector="Button.icon">
+            <Setter Property="Width" Value="35" />
+            <Setter Property="Height" Value="35" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="CornerRadius" Value="4" />
+            <Setter Property="Margin" Value="5,0" />
+        </Style>
+    </UserControl.Styles>
+
     <Grid>
         <Grid.ColumnDefinitions>
-            <ColumnDefinition Width="200" />
+            <ColumnDefinition Width="250" />
             <ColumnDefinition Width="*" />
         </Grid.ColumnDefinitions>
 
-        <ScrollViewer
-            Grid.Column="0"
-            Margin="0,0,0,40"
-            VerticalScrollBarVisibility="Auto">
-
-            <StackPanel x:Name="entriesContainer">
-                
-            </StackPanel>
+        <!--  left column  -->
+        <Border Background="#F5F5F5" BoxShadow="2 0 10 0 #20000000">
+            <Grid>
+                <ScrollViewer Margin="0,0,0,60" VerticalScrollBarVisibility="Auto">
+                    <StackPanel Margin="10" x:Name="entriesContainer" />
                 </ScrollViewer>
+
                 <Button
+                    Background="Red"
+                    Content="-"
+                    CornerRadius="22"
+                    FontSize="24"
+                    Foreground="White"
+                    Height="45"
+                    HorizontalAlignment="Center"
+                    IsEnabled="False"
+                    Margin="0,0,-50,20"
+                    VerticalAlignment="Bottom"
+                    Width="45"
+                    x:Name="DeleteButton" />
+                <Button
+                    Background="#4CAF50"
                     Click="NewEntryButton_OnClick"
                     Content="+"
-            HorizontalAlignment="Left"
-            Name="NewEntryButton"
-            VerticalAlignment="Bottom" />
-
-        <Border Background="RosyBrown" Grid.Column="1">
-            <StackPanel Orientation="Horizontal" x:Name="ShowEntryDetails">
-
-                <StackPanel Margin="20,20,100,20" Orientation="Vertical">
-                    <TextBlock
-                        FontSize="20"
-                        HorizontalAlignment="Left"
-                        Margin="23"
-                        Text="Name:" />
-                    <TextBlock
-                        FontSize="20"
-                        HorizontalAlignment="Left"
-                        Margin="23"
-                        Text="Login-Name:" />
-                    <TextBlock
-                        FontSize="20"
-                        HorizontalAlignment="Left"
-                        Margin="23"
-                        Text="URL:" />
-                    <TextBlock
-                        FontSize="20"
-                        HorizontalAlignment="Left"
-                        Margin="23"
-                        Text="Password:" />
-                    <TextBlock
-                        FontSize="20"
-                        HorizontalAlignment="Left"
-                        Margin="23"
-                        Text="Note:" />
-                </StackPanel>
-
-                <StackPanel Margin="20,20,20,20" Orientation="Vertical">
-                    <TextBox
-                        Height="30"
-                        Margin="20"
-                        Text="THE NAME OF YOUR SAVED LOGIN"
-                        TextWrapping="Wrap" />
-                    <TextBox
-                        Height="30"
-                        Margin="20"
-                        Text="YOUR LOGIN NAME ON THIS PAGE"
-                        TextWrapping="Wrap" />
-                    <TextBox
-                        Height="30"
-                        Margin="20"
-                        Text="THE URL TO YOUR PAGE"
-                        TextWrapping="Wrap" />
-                    <StackPanel Orientation="Horizontal">
-                        <TextBox
-                            Height="30"
-                            Margin="20"
-                            PasswordChar="*"
-                            Text="PASSWORT"
-                            TextWrapping="Wrap" />
-                        <Button
-                            BorderBrush="Black"
-                            BorderThickness="1"
-                            Content="X"
-                            Name="copyPassword" />
-                        <Button
-                            BorderBrush="Black"
-                            BorderThickness="1"
-                            Content="X"
-                            Name="showPassword" />
-                    </StackPanel>
-                    <TextBox
-                        Height="150"
-                        Margin="20"
-                        Text="YOUR NOTES"
-                        TextWrapping="Wrap" />
-                </StackPanel>
-            </StackPanel>
+                    CornerRadius="22"
+                    FontSize="24"
+                    Foreground="White"
+                    Height="45"
+                    HorizontalAlignment="Right"
+                    Margin="0,0,20,20"
+                    VerticalAlignment="Bottom"
+                    Width="45"
+                    x:Name="NewEntryButton" />
+            </Grid>
         </Border>
 
+        <!--  Right column  -->
+        <Border Background="White" Grid.Column="1">
+            <StackPanel Margin="40" x:Name="ShowEntryDetails">
+
+                <Grid ColumnDefinitions="150,*">
+                    <!--  Labels  -->
+                    <StackPanel Grid.Column="0">
+                        <TextBlock FontWeight="SemiBold" Text="Name:" />
+                        <TextBlock FontWeight="SemiBold" Text="Login-Name:" />
+                        <TextBlock FontWeight="SemiBold" Text="URL:" />
+                        <TextBlock FontWeight="SemiBold" Text="Password:" />
+                        <TextBlock FontWeight="SemiBold" Text="Note:" />
+                    </StackPanel>
+
+                    <!--  entry fields  -->
+                    <StackPanel Grid.Column="1">
+                        <TextBox Text="THE NAME OF YOUR SAVED LOGIN" />
+                        <TextBox Text="YOUR LOGIN NAME ON THIS PAGE" />
+                        <TextBox Text="THE URL TO YOUR PAGE" />
+
+                        <StackPanel Orientation="Horizontal">
+                            <TextBox
+                                PasswordChar="•"
+                                Text="PASSWORT"
+                                Width="250" />
+                            <Button
+                                Classes="icon"
+                                Content="📋"
+                                ToolTip.Tip="Passwort kopieren"
+                                x:Name="copyPassword" />
+                            <Button
+                                Classes="icon"
+                                Content="👁"
+                                ToolTip.Tip="Passwort anzeigen"
+                                x:Name="showPassword" />
+                        </StackPanel>
+
+                        <TextBox
+                            AcceptsReturn="True"
+                            Height="150"
+                            Text="YOUR NOTES" />
+                    </StackPanel>
+                </Grid>
+            </StackPanel>
+        </Border>
     </Grid>
-
-
 </UserControl>

Project.View/MenuView/MenuView.axaml.cs

@@ -45,7 +45,8 @@ public partial class MenuView : Window
                 Content = entry.Name, // Display the entry name on the button
                 Margin = new Thickness(5),
                 Padding = new Thickness(10),
-                Width = 200
+                Width = 200,
+                Background = Brushes.SlateGray,
             };
             // add click handler for the button
             button.Click += (object? sender, Avalonia.Interactivity.RoutedEventArgs e) => EntryDetails(entry);

Project.View/NewEntry/NewEntry.axaml

@@ -4,73 +4,110 @@
     x:Class="Project.View.NewEntry"
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    <Grid>
 
-        <Border Background="SaddleBrown">
+    <UserControl.Styles>
+        <Style Selector="TextBlock">
+            <Setter Property="FontSize" Value="14" />
+            <Setter Property="FontWeight" Value="Medium" />
+            <Setter Property="Margin" Value="0,10,0,5" />
+        </Style>
+        <Style Selector="TextBox">
+            <Setter Property="Height" Value="40" />
+            <Setter Property="Margin" Value="0,0,0,10" />
+            <Setter Property="CornerRadius" Value="4" />
+            <Setter Property="HorizontalContentAlignment" Value="Left" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
 
-            <StackPanel Orientation="Vertical">
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Text="Name:" />
-                <TextBox TextWrapping="Wrap" Watermark="Name:" x:Name="NameBox"/>
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Text="Username/Email:" />
-                <TextBox TextWrapping="Wrap" Watermark="Username/Email" x:Name="UsernameMailBox"/>
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Margin="23"
-                    Text="URL:" />
-                <TextBox TextWrapping="Wrap" Watermark="E-Mail" x:Name="URLBox"/>
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Margin="23"
-                    Text="Password:" />
-                <StackPanel Orientation="Horizontal">
+        </Style>
+        <Style Selector="Button">
+            <Setter Property="Height" Value="35" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="CornerRadius" Value="4" />
+            <Setter Property="Margin" Value="5" />
+            <Setter Property="Padding" Value="15,0" />
+        </Style>
+    </UserControl.Styles>
 
+    <Border
+        Background="White"
+        BoxShadow="0 4 8 0 #40000000"
+        CornerRadius="8"
+        Margin="10">
+
+        <Grid Margin="20">
+            <StackPanel>
+                <TextBlock
+                    FontSize="24"
+                    FontWeight="Bold"
+                    Foreground="Gray"
+                    HorizontalAlignment="Center"
+                    Margin="0,0,0,20"
+                    Text="New Entry" />
+
+                <TextBlock Text="Name:" />
+                <TextBox Watermark="Enter Name" x:Name="NameBox" />
+
+                <TextBlock Text="Username/E-Mail:" />
+                <TextBox Watermark="Enter username or email" x:Name="UsernameMailBox" />
+
+                <TextBlock Text="URL:" />
+                <TextBox Watermark="Enter URL" x:Name="URLBox" />
+
+                <TextBlock Text="Password:" />
+                <Grid ColumnDefinitions="*, Auto, Auto">
                     <TextBox
+                        Grid.Column="0"
                         Name="NewentryPW"
-                        PasswordChar="*"
-                        Watermark="Password" x:Name="PassBox"/>
+                        PasswordChar="•"
+                        Watermark="Enter password"
+                        x:Name="PassBox" />
+
                     <Button
-                        BorderBrush="Black"
-                        BorderThickness="1"
-                        Content="Generate Secure Password (WIP)"
-                        Name="newentry_generate_password" />
+                        Background="#4CAF50"
+                        Foreground="White"
+                        Grid.Column="1"
+                        IsEnabled="False"
+                        Name="newentry_generate_password"
+                        ToolTip.Tip="Generate secure password (WORK IN PROGRESS)">
+                        🔒
+                    </Button>
+
                     <Button
-                        BorderBrush="Black"
-                        BorderThickness="1"
+                        Background="#607D8B"
                         Click="NewEntry_ShowPW_Click"
                         Content="👁"
+                        Foreground="White"
+                        Grid.Column="2"
                         Name="newentry_show_password" />
-                </StackPanel>
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Text="Note:" />
-                <TextBox TextWrapping="Wrap" Watermark="Note" x:Name="NoteBox"/>
-                <StackPanel Orientation="Horizontal">
-                    <Button
-                        BorderBrush="Black"
-                        BorderThickness="1"
-                        Click="NewEntry_Cancel_Click"
-                        Content="X"
-                        Name="newentry_cancel_button" />
-                    <Button
-                        BorderBrush="Black"
-                        BorderThickness="1"
-                        Click="NewEntry_Save_Click"
-                        Content="✓"
-                        Name="newentry_save_button" />
-                </StackPanel>
-            </StackPanel>
-        </Border>
-
                 </Grid>
 
+                <TextBlock Text="Note:" />
+                <TextBox
+                    AcceptsReturn="True"
+                    Height="80"
+                    Watermark="Your note:"
+                    x:Name="NoteBox" />
 
+                <StackPanel
+                    HorizontalAlignment="Center"
+                    Margin="0,20,0,0"
+                    Orientation="Horizontal">
+                    <Button
+                        Background="#4CAF50"
+                        Click="NewEntry_Save_Click"
+                        Content="Save"
+                        Foreground="White"
+                        Name="newentry_save_button" />
+
+                    <Button
+                        Background="#FF5722"
+                        Click="NewEntry_Cancel_Click"
+                        Content="Cancel"
+                        Foreground="White"
+                        Name="newentry_cancel_button" />
+                </StackPanel>
+            </StackPanel>
+        </Grid>
+    </Border>
 </UserControl>

Project.View/NewLogin/NewLogin.axaml

@@ -1,57 +1,85 @@
 <UserControl
-    Height="500"
-    Width="350"
+    Height="600"
+    Width="400"
     x:Class="Project.View.NewLogin"
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <UserControl.Styles>
+        <Style Selector="TextBlock">
+            <Setter Property="Margin" Value="0,5" />
+            <Setter Property="FontSize" Value="14" />
+            <Setter Property="FontWeight" Value="Medium" />
+        </Style>
+        <Style Selector="TextBox">
+            <Setter Property="Width" Value="250" />
+            <Setter Property="Margin" Value="0,5,0,15" />
+            <Setter Property="CornerRadius" Value="4" />
+        </Style>
+        <Style Selector="Button">
+            <Setter Property="Width" Value="120" />
+            <Setter Property="Height" Value="40" />
+            <Setter Property="CornerRadius" Value="20" />
+            <Setter Property="Margin" Value="10,8" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="Background" Value="#4CAF50" />
+            <Setter Property="Foreground" Value="White" />
+        </Style>
+    </UserControl.Styles>
+
     <Grid>
+        <Grid.Background>
+            <LinearGradientBrush EndPoint="1,1" StartPoint="0,0">
+                <GradientStop Color="#FFE0B2" Offset="0" />
+                <GradientStop Color="#FFCC80" Offset="1" />
+            </LinearGradientBrush>
+        </Grid.Background>
 
-        <Border Background="SandyBrown">
+        <Border
+            Background="White"
+            BoxShadow="0 4 8 0 #40000000"
+            CornerRadius="8"
+            Margin="20">
 
-            <StackPanel Orientation="Vertical">
+            <StackPanel Margin="20">
                 <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Text="Username:" />
+                    FontSize="24"
+                    FontWeight="Bold"
+                    HorizontalAlignment="Center"
+                    Margin="0,0,0,20"
+                    Text="Neuer Benutzer" />
+
+                <TextBlock Text="Benutzername:" />
                 <TextBox
                     TextWrapping="Wrap"
-                    Watermark="Username"
+                    Watermark="Benutzername eingeben"
                     x:Name="NewLoginUsernameBox" />
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Margin="23"
-                    Text="Password:" />
+
+                <TextBlock Text="Passwort:" />
                 <TextBox
-                    PasswordChar="*"
+                    PasswordChar="•"
                     TextWrapping="Wrap"
-                    Watermark="Password:"
+                    Watermark="Passwort eingeben"
                     x:Name="NewLoginPasswordBox" />
-                <TextBlock
-                    FontSize="20"
-                    HorizontalAlignment="Left"
-                    Margin="23"
-                    Text="Email:" />
+
+                <TextBlock Text="E-Mail:" />
                 <TextBox
                     TextWrapping="Wrap"
-                    Watermark="Email:"
+                    Watermark="E-Mail-Adresse eingeben"
                     x:Name="NewLoginEmailBox" />
-                <StackPanel Orientation="Horizontal">
+
+                <StackPanel
+                    HorizontalAlignment="Center"
+                    Margin="0,20,0,0"
+                    Orientation="Horizontal">
+                    <Button Click="NewLoginSaveOnClick" Content="Speichern" />
                     <Button
-                        BorderBrush="Black"
-                        BorderThickness="1"
-                        Click="NewLoginSaveOnClick"
-                        Content="Save" />
-                    <Button
-                        BorderBrush="Black"
-                        BorderThickness="1"
+                        Background="#FF5722"
                         Click="NewLoginCancelOnClick"
-                        Content="Cancel" />
+                        Content="Abbrechen" />
                 </StackPanel>
             </StackPanel>
         </Border>
-
     </Grid>
-
-
 </UserControl>

Project.View/PopUp/PopUp.axaml

@@ -1,5 +1,5 @@
 <Window
-    Height="250"
+    SizeToContent="Height"
     Title="WARNING"
     Width="500"
     WindowStartupLocation="CenterOwner"
@@ -7,16 +7,53 @@
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
-    <StackPanel Margin="20" Spacing="10">
-        <TextBlock HorizontalAlignment="Center" Text="One or more of your inputs are missing or wrong." />
-        <TextBlock HorizontalAlignment="Center" Text="All fields must be filled." />
-        <TextBlock HorizontalAlignment="Center" Text="Your username needs at least 4 characters." />
-        <TextBlock HorizontalAlignment="Center" Text="Your password needs at least 8 characters." />
-        <TextBlock HorizontalAlignment="Center" Text="Make sure your email is correct." />
+    <Window.Styles>
+        <Style Selector="TextBlock">
+            <Setter Property="HorizontalAlignment" Value="Center" />
+            <Setter Property="FontSize" Value="14" />
+            <Setter Property="Foreground" Value="Gray" />
+            <Setter Property="TextWrapping" Value="Wrap" />
+            <Setter Property="Margin" Value="0,5" />
+        </Style>
+        <Style Selector="Button">
+            <Setter Property="Width" Value="120" />
+            <Setter Property="Height" Value="40" />
+            <Setter Property="CornerRadius" Value="20" />
+            <Setter Property="Margin" Value="0,15,0,0" />
+            <Setter Property="HorizontalAlignment" Value="Center" />
+            <Setter Property="HorizontalContentAlignment" Value="Center" />
+            <Setter Property="VerticalContentAlignment" Value="Center" />
+            <Setter Property="Background" Value="#4CAF50" />
+            <Setter Property="Foreground" Value="White" />
+        </Style>
+    </Window.Styles>
+
+    <Grid Background="#F5F5F5">
+        <Border
+            Background="White"
+            BoxShadow="0 4 8 0 #40000000"
+            CornerRadius="8"
+            Margin="15">
+
+            <ScrollViewer>
+                <StackPanel Margin="20" MaxWidth="450">
+                    <TextBlock
+                        FontSize="24"
+                        FontWeight="Bold"
+                        Margin="0,0,0,15"
+                        Text="⚠️ Warning" />
+                    <TextBlock Text="One or more entries are wrong or missing." />
+                    <TextBlock Text="All boxes must be filled in." />
+                    <TextBlock Text="Your username needs to be at least 4 characters." />
+                    <TextBlock Text="Your password needs to be at least 8 characters." />
+                    <TextBlock Text="Make sure your e-mail is correct." />
+
                     <Button
                         Click="OkButton_Click"
                         Content="OK"
-            HorizontalAlignment="Center"
-            Width="80" />
+                        Margin="0,15,0,5" />
                 </StackPanel>
+            </ScrollViewer>
+        </Border>
+    </Grid>
 </Window>

Project.View/PopUp/PopUp.axaml.cs

@@ -9,7 +9,8 @@ using Project.Persistence;
 namespace Project.View;
 
 public partial class PopUp : Window
-{        public PopUp()
+{        
+    public PopUp()
     {
         InitializeComponent();
     }

Project.View/Project.View.csproj

@@ -36,6 +36,10 @@
       <DependentUpon>NewEntry.axaml</DependentUpon>
       <SubType>Code</SubType>
     </Compile>
+    <Compile Update="LoginErrorPopup\LoginErrorPopup.axaml.cs">
+      <DependentUpon>PopUp.axaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
   </ItemGroup>
 
   <ItemGroup>