Updated packages.

Harmonia.Core/Harmonia.Core.csproj

@@ -9,10 +9,10 @@
   <ItemGroup>
     <PackageReference Include="ManagedBass" Version="4.0.2" />
     <PackageReference Include="ManagedBass.Flac" Version="4.0.2" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.11" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="10.0.11" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="10.0.11" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.11" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.12" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="10.0.12" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="10.0.12" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.12" />
     <PackageReference Include="TagLibSharp" Version="2.3.0" />
   </ItemGroup>
 

Harmonia.Tests/Harmonia.Tests.csproj

@@ -16,14 +16,14 @@
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.0" />
 		<PackageReference Include="NSubstitute" Version="6.2.0" />
 		<PackageReference Include="Shouldly" Version="4.3.0" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+		<PackageReference Include="xunit.runner.visualstudio" Version="4.0.0">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="xunit.v3" Version="3.2.2" />
+		<PackageReference Include="xunit.v3" Version="4.0.0" />
 	</ItemGroup>
 
 	<ItemGroup>

Harmonia.Tests/PlaylistTests.cs

@@ -8,6 +8,32 @@ namespace Harmonia.Tests;
 
 public class PlaylistTests
 {
+    [Fact]
+    public void Create_Playlist()
+    {
+        Playlist playlist = new();
+        playlist.Name.ShouldBeNull();
+        playlist.Songs.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Create_Playlist_With_Name()
+    {
+        Playlist playlist = new("My Playlist");
+        playlist.Name.ShouldBe("My Playlist");
+        playlist.Songs.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Set_Playlist_Name()
+    {
+        Playlist playlist = new();
+        playlist.Name.ShouldBeNull();
+
+        playlist.SetName("My Playlist");
+        playlist.Name.ShouldBe("My Playlist");
+    }
+
     [Fact]
     public void Add_Songs()
     {
@@ -37,6 +63,70 @@ public class PlaylistTests
         playlist.Songs[1].Song.FileName.ShouldBe("Song5.mp3");
     }
 
+    [Fact]
+    public void Move_Songs()
+    {
+        Playlist playlist = new();
+
+        Song[] songs =
+        [
+            new Song() { FileName = "Song1.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" },
+            new Song() { FileName = "Song4.mp3" },
+            new Song() { FileName = "Song5.mp3" },
+        ];
+
+        playlist.AddSongs(songs);
+
+        playlist.MoveSong(2, 3);
+
+        string[] expectedFileNames =
+        [
+            "Song1.mp3",
+            "Song2.mp3",
+            "Song4.mp3",
+            "Song3.mp3",
+            "Song5.mp3"
+        ];
+
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedFileNames);
+    }
+
+    [Fact]
+    public void Remove_Duplicate_Songs()
+    {
+        Playlist playlist = new();
+
+        Song[] songs =
+        [
+            new Song() { FileName = "Song1.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" },
+            new Song() { FileName = "Song4.mp3" },
+            new Song() { FileName = "Song5.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" },
+        ];
+
+        playlist.AddSongs(songs);
+
+        playlist.RemoveDuplicateSongs();
+
+        string[] expectedFileNames =
+        [
+            "Song1.mp3",
+            "Song2.mp3",
+            "Song3.mp3",
+            "Song4.mp3",
+            "Song5.mp3"
+        ];
+
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedFileNames);
+    }
+
     [Fact]
     public void Sort_Songs()
     {
@@ -74,6 +164,34 @@ public class PlaylistTests
             .ShouldBeEquivalentTo(expectedSortedFileNames);
     }
 
+    [Fact]
+    public void Reverse_Songs()
+    {
+        Playlist playlist = new();
+
+        Song[] songs =
+        [
+            new Song() { FileName = "Song1.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" }
+        ];
+
+        playlist.AddSongs(songs);
+
+        PlaylistSong[] playlistSongs = [.. playlist.Songs];
+
+        playlist.Reverse(playlistSongs);
+
+        string[] expectedReversedFileNames =
+        [
+            "Song3.mp3",
+            "Song2.mp3",
+            "Song1.mp3"
+        ];
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedReversedFileNames);
+    }
+
     [Fact]
     public void Remove_Songs()
     {
@@ -101,7 +219,7 @@ public class PlaylistTests
     }
 
     [Fact]
-    public void Lock_Playlist()
+    public void Lock_And_Unlock_Playlist()
     {
         Playlist playlist = new();
 
@@ -114,8 +232,12 @@ public class PlaylistTests
 
         playlist.AddSongs(songs);
 
+        playlist.IsLocked.ShouldBeFalse();
+
         playlist.Lock();
 
+        playlist.IsLocked.ShouldBeTrue();
+
         Song song = new() { FileName = "Song4.mp3" };
         playlist.AddSong(song);
 
@@ -124,11 +246,21 @@ public class PlaylistTests
         playlist.RemoveSong(0);
 
         playlist.Songs.Count.ShouldBe(3);
-    }
 
-    //public void Get_Playlists()
-    //{
-    //    //PlaylistRepository playlistRepository = new();
-    //    //playlistRepository.Get().Returns()
-    //}
+        playlist.MoveSong(0, 2);
+
+        string[] expectedMovedFileNamesOnLockedPlaylist =
+        [
+            "Song1.mp3",
+            "Song2.mp3",
+            "Song3.mp3"
+        ];
+
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedMovedFileNamesOnLockedPlaylist);
+
+        playlist.Unlock();
+
+        playlist.IsLocked.ShouldBeFalse();
+    }
 }

Harmonia.UI.Desktop/Harmonia.UI.Desktop.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia.Desktop" Version="12.1.1" />
+    <PackageReference Include="Avalonia.Desktop" Version="12.1.2" />
   </ItemGroup>
 
   <ItemGroup>

Harmonia.UI/Harmonia.UI.csproj

@@ -11,15 +11,15 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="12.1.1" />
-    <PackageReference Include="Avalonia.Themes.Fluent" Version="12.1.1" />
-    <PackageReference Include="Avalonia.Fonts.Inter" Version="12.1.1" />
+    <PackageReference Include="Avalonia" Version="12.1.2" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="12.1.2" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="12.1.2" />
     <PackageReference Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.3" />
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.2" />
 
     <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
-    <PackageReference Include="Egolds.Xaml.Behaviors.Interactions.Animated" Version="11.3.3" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.11" />
+    <PackageReference Include="Egolds.Xaml.Behaviors.Interactions.Animated" Version="11.4.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.12" />
     <PackageReference Include="Semi.Avalonia" Version="12.1.0.1" />
   </ItemGroup>
 

Harmonia.WinUI/Harmonia.WinUI.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
 		<OutputType>WinExe</OutputType>
 		<TargetFramework>net10.0-windows10.0.26100.0</TargetFramework>
@@ -14,6 +14,7 @@
 		<WindowsAppSDKSelfContained>true</WindowsAppSDKSelfContained>
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
+	
 	<ItemGroup>
 	  <None Remove="Resources\Styles.xaml" />
 	  <None Remove="Views\PlayerView.xaml" />
@@ -30,6 +31,10 @@
 		<Content Include="Assets\Wide310x150Logo.scale-200.png" />
 	</ItemGroup>
 
+	<ItemGroup>
+		<Content Include="Assets\Fonts\*.ttf" />
+	</ItemGroup>
+
 	<ItemGroup>
 		<Manifest Include="$(ApplicationManifest)" />
 	</ItemGroup>
@@ -45,8 +50,8 @@
 	<ItemGroup>
 		<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.2" />
 		<PackageReference Include="CommunityToolkit.WinUI.Media" Version="8.2.251219" />
-		<PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.28000.2526" />
-		<PackageReference Include="Microsoft.WindowsAppSDK" Version="2.3.1" />
+		<PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.28000.2705" />
+		<PackageReference Include="Microsoft.WindowsAppSDK" Version="2.4.0" />
 	</ItemGroup>
 	<ItemGroup>
 	  <ProjectReference Include="..\Harmonia.Core\Harmonia.Core.csproj" />
@@ -102,5 +107,6 @@
 		<PublishReadyToRun Condition="'$(Configuration)' != 'Debug'">True</PublishReadyToRun>
 		<PublishTrimmed Condition="'$(Configuration)' == 'Debug'">False</PublishTrimmed>
 		<PublishTrimmed Condition="'$(Configuration)' != 'Debug'">True</PublishTrimmed>
+		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
 	</PropertyGroup>
 </Project>

Harmonia.WinUI/MainWindow.xaml

@@ -40,7 +40,7 @@
             <!--<Image Grid.Column="0" x:Name="TitleBarIcon" Source="ms-appx:///Assets/Images/MangaReader.png" Width="20" Height="20" Margin="0 0 10 0" />-->
             <TextBlock Grid.Column="1" x:Name="AppTitle" Text="{x:Bind Title, Mode=OneWay}" Style="{StaticResource CaptionTextBlockStyle}" VerticalAlignment="Center" />
         </Grid>
-        <Grid Grid.Row="1" Grid.RowSpan="2">
+        <!--<Grid Grid.Row="1" Grid.RowSpan="2">
             <Image Source="/Assets/Default.png" Stretch="UniformToFill" VerticalAlignment="Center" HorizontalAlignment="Center"></Image>
             <Canvas Background="#99000000"></Canvas>
             <Border>
@@ -48,7 +48,7 @@
                     <Media:BackdropBlurBrush Amount="20"></Media:BackdropBlurBrush>
                 </Border.Background>
             </Border>
-        </Grid>
+        </Grid>-->
         <Grid Grid.Row="1">
             <Grid.ColumnDefinitions>
                 <ColumnDefinition></ColumnDefinition>

Harmonia.WinUI/MainWindow.xaml.cs

@@ -1,6 +1,9 @@
+using Harmonia.Core.Player;
 using Harmonia.WinUI.Session;
 using Microsoft.UI.Windowing;
 using Microsoft.UI.Xaml;
+using System;
+using System.Runtime.InteropServices;
 
 namespace Harmonia.WinUI;
 
@@ -8,16 +11,23 @@ public sealed partial class MainWindow : Window
 {
     private const string ApplicationTitle = "Harmonia";
 
+    [LibraryImport("kernel32.dll", SetLastError = true)]
+    private static partial EXECUTION_STATE SetThreadExecutionState(EXECUTION_STATE esFlags);
+
     private readonly ISessionService _sessionService;
     private readonly ISessionTracker _sessionTracker;
+    private readonly IAudioPlayer _audioPlayer;
 
     private bool _isSaved;
 
-    public MainWindow(ISessionService sessionService, ISessionTracker sessionTracker)
+    public MainWindow(ISessionService sessionService, ISessionTracker sessionTracker, IAudioPlayer audioPlayer)
     {
         _sessionService = sessionService;
         _sessionTracker = sessionTracker;
 
+        _audioPlayer = audioPlayer;
+        _audioPlayer.PropertyChanged += OnAudioPlayerPropertyChanged;
+
         InitializeComponent();
         InitializeTitleBar();
         InitializeWindowState();
@@ -54,6 +64,8 @@ public sealed partial class MainWindow : Window
 
     private async void OnMainWindowClosed(object sender, WindowEventArgs args)
     {
+        EnableSleepIdleTimeout();
+
         if (_isSaved)
             return;
 
@@ -65,4 +77,53 @@ public sealed partial class MainWindow : Window
         _isSaved = true;
         Close();
     }
+
+    private void OnAudioPlayerPropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
+    {
+        switch (e.PropertyName)
+        {
+            case nameof(_audioPlayer.State):
+                OnAudioPlayerStateChanged(sender, e);
+                break;
+        }
+    }
+
+    private void OnAudioPlayerStateChanged(object? sender, EventArgs e)
+    {
+        // SetThreadExecutionState is per-thread, so always marshal to the UI thread to
+        // guarantee the ES_CONTINUOUS flags are set and cleared on the same thread.
+        DispatcherQueue.TryEnqueue(() =>
+        {
+            switch (_audioPlayer.State)
+            {
+                case Core.Engine.AudioPlaybackState.Playing:
+                    DisableSleepIdleTimeout();
+                    break;
+                default:
+                    EnableSleepIdleTimeout();
+                    break;
+            }
+        });
+    }
+
+    private static void EnableSleepIdleTimeout()
+    {
+        // Clear EXECUTION_STATE flags to allow the system to idle to sleep normally.
+        SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS);
+    }
+
+    private static void DisableSleepIdleTimeout()
+    {
+        // Prevent the system sleep idle time-out while still allowing the display to sleep.
+        SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS | EXECUTION_STATE.ES_SYSTEM_REQUIRED);
+    }
+
+    [Flags]
+    private enum EXECUTION_STATE : uint
+    {
+        ES_CONTINUOUS        = 0x80000000,
+        ES_SYSTEM_REQUIRED   = 0x00000001,
+        ES_DISPLAY_REQUIRED  = 0x00000002,
+        ES_AWAYMODE_REQUIRED = 0x00000040
+    }
 }

Harmonia.WinUI/Resources/Styles.xaml

@@ -4,29 +4,34 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
     <!-- Global Font -->
+    <FontFamily x:Key="AppFontFamily">ms-appx:///Assets/Fonts/Lexend-Regular.ttf#Lexend, ms-appx:///Assets/Fonts/NotoSansJP-Regular.ttf#Noto Sans JP</FontFamily>
+    <FontFamily x:Key="AppFontFamilyMedium">ms-appx:///Assets/Fonts/Lexend-Medium.ttf#Lexend, ms-appx:///Assets/Fonts/NotoSansJP-Medium.ttf#Noto Sans JP</FontFamily>
+    <FontFamily x:Key="AppFontFamilySemiBold">ms-appx:///Assets/Fonts/Lexend-SemiBold.ttf#Lexend, ms-appx:///Assets/Fonts/NotoSansJP-SemiBold.ttf#Noto Sans JP</FontFamily>
+    <FontFamily x:Key="AppFontFamilyBold">ms-appx:///Assets/Fonts/Lexend-Bold.ttf#Lexend, ms-appx:///Assets/Fonts/NotoSansJP-Bold.ttf#Noto Sans JP</FontFamily>
+
     <Style TargetType="TextBlock">
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}" />
     </Style>
 
     <Style TargetType="TextBox" BasedOn="{StaticResource DefaultTextBoxStyle}">
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}" />
     </Style>
 
     <Style TargetType="MenuFlyoutItem" BasedOn="{StaticResource DefaultMenuFlyoutItemStyle}">
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}" />
     </Style>
 
     <Style TargetType="MenuFlyoutSubItem" BasedOn="{StaticResource DefaultMenuFlyoutSubItemStyle}">
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}" />
     </Style>
 
     <Style TargetType="ToggleMenuFlyoutItem" BasedOn="{StaticResource DefaultToggleMenuFlyoutItemStyle}">
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}" />
     </Style>
 
 
     <Style TargetType="ListViewItem" BasedOn="{StaticResource DefaultListViewItemStyle}">
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP" />
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}" />
     </Style>
 
     <!-- Premium Palette (from Harmonia icon set) -->
@@ -92,7 +97,7 @@
         <Setter Property="Background" Value="{StaticResource PremiumTileGradient}"/>
         <Setter Property="Padding" Value="14,8"/>
         <Setter Property="CornerRadius" Value="12"/>
-        <Setter Property="FontFamily" Value="Lexend,Noto Sans JP"/>
+        <Setter Property="FontFamily" Value="{StaticResource AppFontFamily}"/>
         <Setter Property="HorizontalContentAlignment" Value="Center"/>
         <Setter Property="VerticalContentAlignment" Value="Center"/>
         <Setter Property="Template">

Harmonia.WinUI/ViewModels/PlaylistDetailViewModel.cs

@@ -595,7 +595,7 @@ public partial class PlaylistDetailViewModel : ViewModelBase
 
     private bool CanPasteSongs()
     {
-        if (Playlist == null || SelectedPlaylistSongs.Count == 0)
+        if (Playlist == null)
             return false;
 
         DataPackageView dataPackageView = Clipboard.GetContent();
@@ -611,17 +611,21 @@ public partial class PlaylistDetailViewModel : ViewModelBase
 
     private async Task PasteSongsAsync()
     {
-        if (Playlist == null || SelectedPlaylistSongs.Count == 0)
-            return;
-
-        int selectedPlaylistSongIndex = Playlist.IndexOf(SelectedPlaylistSongs[0]);
-
-        if (selectedPlaylistSongIndex == -1)
+        if (Playlist == null)
             return;
 
         Song[] songs = await GetSongsFromClipboardAsync();
+        int insertIndex = Playlist.Songs.Count;
 
-        Playlist.AddSongs(songs, selectedPlaylistSongIndex + 1);
+        if (SelectedPlaylistSongs.Count > 0)
+        {
+            int selectedPlaylistSongIndex = Playlist.IndexOf(SelectedPlaylistSongs[0]);
+
+            if (selectedPlaylistSongIndex >= 0)
+                insertIndex = selectedPlaylistSongIndex + 1;
+        }
+
+        Playlist.AddSongs(songs, insertIndex);
     }
 
     private static async Task<Song[]> GetSongsFromClipboardAsync()

Harmonia.WinUI/Views/PlayerView.xaml

@@ -52,6 +52,7 @@
         </Style>
         <Style x:Key="SongTitleTextBlock" TargetType="TextBlock">
             <Setter Property="FontSize" Value="16"/>
+            <Setter Property="FontFamily" Value="{StaticResource AppFontFamilySemiBold}"/>
             <Setter Property="FontWeight" Value="SemiBold"/>
             <Setter Property="TextTrimming" Value="CharacterEllipsis"/>
             <Setter Property="Foreground" Value="{StaticResource SongItemTitleBrush}"/>
@@ -137,7 +138,7 @@
                     <Canvas Background="#19000000"></Canvas>
                 </Grid>
                 <StackPanel VerticalAlignment="Center">
-                    <TextBlock Foreground="{StaticResource SongItemTitleBrush2}" FontWeight="SemiBold" FontSize="16" Text="{Binding Song, Converter={StaticResource SongTitle}}"></TextBlock>
+                    <TextBlock Foreground="{StaticResource SongItemTitleBrush2}" FontFamily="{StaticResource AppFontFamilySemiBold}" FontWeight="SemiBold" FontSize="16" Text="{Binding Song, Converter={StaticResource SongTitle}}"></TextBlock>
                     <TextBlock Foreground="{StaticResource SongItemSubtitleBrush2}" FontSize="14" Text="{Binding Song.Artists, Converter={StaticResource ArtistsToString}}"></TextBlock>
                     <TextBlock Foreground="{StaticResource SongItemSubtitleBrush2}" FontSize="14" Text="{Binding Song.Album}"></TextBlock>
                     <TextBlock Foreground="#777" FontSize="12"  Visibility="{Binding Song, Converter={StaticResource NullVisibility}}">
@@ -150,14 +151,59 @@
         <!-- Playback Actions -->
         <Grid Grid.Row="1" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Center">
             <StackPanel Orientation="Horizontal" Spacing="16">
+                <!--<Button Style="{StaticResource FlatButton}" Command="{Binding PreviousSongCommand}">
+                    <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource LightGradientBrush}" Data="{StaticResource ShuffleIcon}"></Path>
+                </Button>-->
                 <Button Style="{StaticResource FlatButton}" Command="{Binding PreviousSongCommand}">
                     <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource LightGradientBrush}" Data="{StaticResource SkipStartFillIcon}"></Path>
                 </Button>
                 <Button Style="{StaticResource FlatButton}"  Command="{Binding StopSongCommand}">
                     <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource LightGradientBrush}" Data="{StaticResource StopFillIcon}"></Path>
                 </Button>
-                <Button Style="{StaticResource FlatButton}" Command="{Binding PlaySongCommand}" BorderBrush="{StaticResource DarkGradientBrush}" BorderThickness="2" CornerRadius="48" Padding="16">
-                    <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource DarkGradientBrush}" Data="{StaticResource PlayFillIcon}" Margin="1,0,-1,0"></Path>
+                <Button Style="{StaticResource FlatButton}" Command="{Binding PlaySongCommand}" Padding="0"
+                        PointerEntered="PlayButton_PointerEntered" PointerExited="PlayButton_PointerExited">
+                    <Button.Resources>
+                        <!-- Keep background transparent on hover/press -->
+                        <SolidColorBrush x:Key="ButtonBackgroundPointerOver" Color="Transparent"/>
+                        <SolidColorBrush x:Key="ButtonBackgroundPressed" Color="Transparent"/>
+
+                        <Storyboard x:Name="PlayHoverEnterStoryboard">
+                            <ColorAnimation Storyboard.TargetName="PlayGradientStopTop" Storyboard.TargetProperty="Color"
+                                            To="#FDF6E2" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                            <ColorAnimation Storyboard.TargetName="PlayGradientStopBottom" Storyboard.TargetProperty="Color"
+                                            To="#C98B4E" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                            <ColorAnimation Storyboard.TargetName="PlayIconGradientStopTop" Storyboard.TargetProperty="Color"
+                                            To="#FDF6E2" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                            <ColorAnimation Storyboard.TargetName="PlayIconGradientStopBottom" Storyboard.TargetProperty="Color"
+                                            To="#C98B4E" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                        </Storyboard>
+                        <Storyboard x:Name="PlayHoverExitStoryboard">
+                            <ColorAnimation Storyboard.TargetName="PlayGradientStopTop" Storyboard.TargetProperty="Color"
+                                            To="#F9EBC6" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                            <ColorAnimation Storyboard.TargetName="PlayGradientStopBottom" Storyboard.TargetProperty="Color"
+                                            To="#A66831" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                            <ColorAnimation Storyboard.TargetName="PlayIconGradientStopTop" Storyboard.TargetProperty="Color"
+                                            To="#F9EBC6" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                            <ColorAnimation Storyboard.TargetName="PlayIconGradientStopBottom" Storyboard.TargetProperty="Color"
+                                            To="#A66831" Duration="0:0:0.15" EnableDependentAnimation="True"/>
+                        </Storyboard>
+                    </Button.Resources>
+                    <Border BorderThickness="2" CornerRadius="48" Padding="16">
+                        <Border.BorderBrush>
+                            <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
+                                <GradientStop x:Name="PlayGradientStopTop" Color="#F9EBC6" Offset="0"/>
+                                <GradientStop x:Name="PlayGradientStopBottom" Color="#A66831" Offset="1"/>
+                            </LinearGradientBrush>
+                        </Border.BorderBrush>
+                        <Path Style="{StaticResource FlatButtonPath}" Data="{StaticResource PlayFillIcon}" Margin="1,0,-1,0">
+                            <Path.Fill>
+                                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
+                                    <GradientStop x:Name="PlayIconGradientStopTop" Color="#F9EBC6" Offset="0"/>
+                                    <GradientStop x:Name="PlayIconGradientStopBottom" Color="#A66831" Offset="1"/>
+                                </LinearGradientBrush>
+                            </Path.Fill>
+                        </Path>
+                    </Border>
                 </Button>
                 <Button Style="{StaticResource FlatButton}"  Command="{Binding PauseSongCommand}">
                     <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource LightGradientBrush}" Data="{StaticResource PauseFillIcon}"></Path>
@@ -165,6 +211,9 @@
                 <Button Style="{StaticResource FlatButton}"  Command="{Binding NextSongCommand}">
                     <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource LightGradientBrush}" Data="{StaticResource SkipEndFillIcon}"></Path>
                 </Button>
+                <!--<Button Style="{StaticResource FlatButton}"  Command="{Binding NextSongCommand}">
+                    <Path Style="{StaticResource FlatButtonPath}" Fill="{StaticResource LightGradientBrush}" Data="{StaticResource RepeatIcon}"></Path>
+                </Button>-->
             </StackPanel>
         </Grid>
         
@@ -178,7 +227,14 @@
                         </Canvas>
                     </Viewbox>
                 </Button>
-                <Slider Width="200" Minimum="0.0" Maximum="1.0" StepFrequency="0.01" VerticalAlignment="Center" Value="{Binding Volume, Mode=TwoWay}">
+                <Slider
+                    Width="200"
+                    Minimum="0.0"
+                    Maximum="1.0"
+                    StepFrequency="0.01"
+                    VerticalAlignment="Center"
+                    PointerWheelChanged="VolumeSlider_PointerWheelChanged"
+                    Value="{Binding Volume, Mode=TwoWay}">
                     <Slider.Resources>
                         <!-- Thumb (the "ball") -->
                         <StaticResource x:Key="SliderThumbBackground" ResourceKey="DarkGradientBrush"/>

Harmonia.WinUI/Views/PlayerView.xaml.cs

@@ -50,6 +50,18 @@ public sealed partial class PlayerView : UserControl
         _viewModel.IsPositionChangeInProgress = false;
     }
 
+    private void PlayButton_PointerEntered(object? sender, PointerRoutedEventArgs e)
+    {
+        PlayHoverExitStoryboard.Stop();
+        PlayHoverEnterStoryboard.Begin();
+    }
+
+    private void PlayButton_PointerExited(object? sender, PointerRoutedEventArgs e)
+    {
+        PlayHoverEnterStoryboard.Stop();
+        PlayHoverExitStoryboard.Begin();
+    }
+
     private void VolumeSlider_PointerWheelChanged(object? sender, PointerRoutedEventArgs e)
     {
         if (sender is not Slider slider)

Harmonia.WinUI/Views/PlaylistDetailView.xaml

@@ -43,6 +43,7 @@
         <!-- Song Item Title Text Block -->
         <Style x:Key="SongTitleTextBlock" TargetType="TextBlock">
             <Setter Property="Foreground" Value="{StaticResource SongItemTitleBrush}"/>
+            <Setter Property="FontFamily" Value="{StaticResource AppFontFamilyMedium}"/>
             <Setter Property="FontSize" Value="15"/>
             <Setter Property="FontWeight" Value="Medium"/>
             <Setter Property="LineStackingStrategy" Value="BlockLineHeight"/>
@@ -237,7 +238,7 @@
                             <Setter Property="Background" Value="Transparent"></Setter>
                         </Style>
                     </MenuFlyout.MenuFlyoutPresenterStyle>
-                    <MenuFlyoutItem Text="Play" FontWeight="SemiBold" Command="{Binding PlaySongCommand}">
+                    <MenuFlyoutItem Text="Play" FontFamily="{StaticResource AppFontFamilySemiBold}" FontWeight="SemiBold" Command="{Binding PlaySongCommand}">
                         <MenuFlyoutItem.Icon>
                             <PathIcon Data="{StaticResource PlayIcon}"></PathIcon>
                         </MenuFlyoutItem.Icon>

Harmonia.WinUI/Views/PlaylistsView.xaml

@@ -25,20 +25,33 @@
             <GradientStop Color="#0B0D0F" Offset="1"/>
         </LinearGradientBrush>
 
+        <LinearGradientBrush x:Key="ActiveGradientBrush" StartPoint="0,0" EndPoint="0,1">
+            <GradientStop Color="#E1B88A" Offset="0"/>
+            <GradientStop Color="#E9B578" Offset="1"/>
+        </LinearGradientBrush>
+
+        <LinearGradientBrush x:Key="ActiveDarkGradientBrush" StartPoint="0,0" EndPoint="0,1">
+            <GradientStop Color="#F9EBC6" Offset="0"/>
+            <GradientStop Color="#A66831" Offset="1"/>
+        </LinearGradientBrush>
+
         <!-- Playlist Icon Path -->
         <Style x:Key="PlaylistIconPath" TargetType="PathIcon">
             <Setter Property="Foreground" Value="{StaticResource PlaylistItemIconBrush}"/>
+            <Setter Property="Foreground" Value="{StaticResource ActiveDarkGradientBrush}"/>
         </Style>
 
         <Style x:Key="SelectedPlaylistIconPath" TargetType="PathIcon" BasedOn="{StaticResource PlaylistIconPath}">
             <Setter Property="Foreground" Value="{StaticResource AccentTextFillColorPrimaryBrush}"/>
+            <Setter Property="Foreground" Value="{StaticResource ActiveGradientBrush}"/>
+            <Setter Property="Foreground" Value="{StaticResource ActiveDarkGradientBrush}"/>
         </Style>
 
         <!-- Playlist Title Text Block -->
         <Style x:Key="PlaylistTitleTextBlock" TargetType="TextBlock">
             <Setter Property="Foreground" Value="{StaticResource PlaylistItemTitleBrush}"/>
             <Setter Property="FontSize" Value="15"/>
-            <Setter Property="FontWeight" Value="Medium"/>
+            <Setter Property="FontWeight" Value="Normal"/>
             <Setter Property="LineStackingStrategy" Value="BlockLineHeight"/>
             <Setter Property="VerticalAlignment" Value="Center"/>
             <Setter Property="TextTrimming" Value="CharacterEllipsis"/>
@@ -47,6 +60,8 @@
 
         <Style x:Key="SelectedPlaylistTitleTextBlock" TargetType="TextBlock" BasedOn="{StaticResource PlaylistTitleTextBlock}">
             <Setter Property="Foreground" Value="{StaticResource AccentTextFillColorPrimaryBrush}"/>
+            <Setter Property="FontFamily" Value="{StaticResource AppFontFamilyMedium}"/>
+            <Setter Property="FontWeight" Value="Medium"/>
         </Style>
 
         <!-- Playlist Item Subtitle Text Block -->