releases/VideoDownloader.App/MainWindow.xaml

<Window x:Class="VideoDownloader.App.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:wv2="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
        xmlns:vm="clr-namespace:VideoDownloader.App.ViewModels"
         xmlns:local="clr-namespace:VideoDownloader.App"
         xmlns:feat="clr-namespace:VideoDownloader.App.Browser.Features"
        mc:Ignorable="d"
        FontFamily="{StaticResource UiFont}"
        Title="Video Downloader" Height="820" Width="1300"
        Background="{StaticResource WindowBgGradient}"
        WindowStartupLocation="CenterScreen"
        WindowStyle="None" ResizeMode="CanResize">

    <!-- 보더리스: WindowChrome 이 실제 엣지 리사이즈 + 올바른 최대화(작업표시줄 존중) + DWM 그림자 담당 -->
    <WindowChrome.WindowChrome>
        <WindowChrome CaptionHeight="0"
                      ResizeBorderThickness="6"
                      GlassFrameThickness="1"
                      CornerRadius="0"
                      UseAeroCaptionButtons="False"
                      NonClientFrameEdges="None"/>
    </WindowChrome.WindowChrome>

    <Window.Resources>
        <BooleanToVisibilityConverter x:Key="BoolToVis"/>
        <DataTemplate DataType="{x:Type vm:DownloadItemViewModel}">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderSubtle}"
                    BorderThickness="1" CornerRadius="12" Padding="13" Margin="0,0,0,10">
                <StackPanel>
                    <DockPanel>
                        <Border DockPanel.Dock="Right" Background="{StaticResource GlassBg}"
                                BorderBrush="{StaticResource BorderBrush}" BorderThickness="1"
                                CornerRadius="6" Padding="8,2" VerticalAlignment="Center">
                            <TextBlock Text="{Binding FormatTag}" FontSize="10" FontWeight="Bold"
                                       Foreground="{StaticResource AccentBrush}"/>
                        </Border>
                        <TextBlock Text="{Binding Title}" Foreground="{StaticResource TextPrimary}"
                                   FontSize="13" FontWeight="SemiBold" TextTrimming="CharacterEllipsis"
                                   VerticalAlignment="Center"/>
                    </DockPanel>

                    <!-- 소셜(YouTube/Instagram/X) 카드: 화질 선택 -->
                    <DockPanel Margin="0,9,0,2" Visibility="{Binding IsSocial, Converter={StaticResource BoolToVis}}">
                        <Button DockPanel.Dock="Right" Click="CardFetchFormats_Click" Margin="7,0,0,0"
                                VerticalAlignment="Center" ToolTip="이 영상에서 사용 가능한 화질 조회">
                            <Button.Style>
                                <Style TargetType="Button" BasedOn="{StaticResource CardActionButton}">
                                    <Setter Property="Content" Value="불러오기"/>
                                    <Style.Triggers>
                                        <DataTrigger Binding="{Binding IsFetchingFormats}" Value="True">
                                            <Setter Property="Content" Value="…"/>
                                            <Setter Property="IsEnabled" Value="False"/>
                                        </DataTrigger>
                                        <DataTrigger Binding="{Binding Status}" Value="다운로드 중"><Setter Property="IsEnabled" Value="False"/></DataTrigger>
                                        <DataTrigger Binding="{Binding Status}" Value="병합 중"><Setter Property="IsEnabled" Value="False"/></DataTrigger>
                                        <DataTrigger Binding="{Binding Status}" Value="리먹스 중"><Setter Property="IsEnabled" Value="False"/></DataTrigger>
                                        <DataTrigger Binding="{Binding Status}" Value="완료"><Setter Property="IsEnabled" Value="False"/></DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </Button.Style>
                        </Button>
                        <ComboBox Style="{StaticResource DarkComboBox}"
                                  ItemsSource="{Binding Formats}" DisplayMemberPath="Label"
                                  SelectedItem="{Binding SelectedFormat}"
                                  VerticalAlignment="Center"/>
                    </DockPanel>

                    <DockPanel Margin="0,11,0,6">
                        <TextBlock DockPanel.Dock="Right" Text="{Binding Segments}"
                                   Foreground="{StaticResource TextMuted}" FontSize="11"
                                   VerticalAlignment="Center" Margin="8,0,0,0"/>
                        <Grid VerticalAlignment="Center">
                            <ProgressBar Value="{Binding Progress}" Maximum="100">
                                <ProgressBar.Style>
                                    <Style TargetType="ProgressBar" BasedOn="{StaticResource AccentProgressBar}">
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding IsIndeterminate}" Value="True">
                                                <Setter Property="Visibility" Value="Collapsed"/>
                                            </DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </ProgressBar.Style>
                            </ProgressBar>
                            <ProgressBar>
                                <ProgressBar.Style>
                                    <Style TargetType="ProgressBar" BasedOn="{StaticResource IndeterminateBar}">
                                        <Setter Property="Visibility" Value="Collapsed"/>
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding IsIndeterminate}" Value="True">
                                                <Setter Property="Visibility" Value="Visible"/>
                                            </DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </ProgressBar.Style>
                            </ProgressBar>
                        </Grid>
                    </DockPanel>

                    <DockPanel Margin="0,4,0,0">
                        <TextBlock Text="{Binding Status}" FontSize="11" VerticalAlignment="Center">
                            <TextBlock.Style>
                                <Style TargetType="TextBlock">
                                    <Setter Property="Foreground" Value="{StaticResource TextSecondary}"/>
                                    <Style.Triggers>
                                        <DataTrigger Binding="{Binding Status}" Value="오류">
                                            <Setter Property="Foreground" Value="{StaticResource ErrorBrush}"/>
                                        </DataTrigger>
                                        <DataTrigger Binding="{Binding Status}" Value="완료">
                                            <Setter Property="Foreground" Value="{StaticResource SuccessBrush}"/>
                                        </DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </TextBlock.Style>
                        </TextBlock>
                        <StackPanel DockPanel.Dock="Right" Orientation="Horizontal">
                            <Button Style="{StaticResource CardActionButton}" Content="받기" Click="CardDownload_Click" Margin="0,0,6,0"/>
                            <Button Content="취소" Click="CardCancel_Click" Margin="0,0,6,0">
                                <Button.Style>
                                    <Style TargetType="Button" BasedOn="{StaticResource CardActionButton}">
                                        <Setter Property="IsEnabled" Value="False"/>
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding Status}" Value="다운로드 중"><Setter Property="IsEnabled" Value="True"/></DataTrigger>
                                            <DataTrigger Binding="{Binding Status}" Value="병합 중"><Setter Property="IsEnabled" Value="True"/></DataTrigger>
                                            <DataTrigger Binding="{Binding Status}" Value="리먹스 중"><Setter Property="IsEnabled" Value="True"/></DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </Button.Style>
                            </Button>
                            <Button Style="{StaticResource CardActionButton}" Content="재시도" Click="CardRetry_Click" Margin="0,0,6,0"/>
                            <Button Style="{StaticResource CardActionButton}" Content="폴더" Click="CardFolder_Click"/>
                        </StackPanel>
                    </DockPanel>

                    <StackPanel Orientation="Horizontal" Margin="0,8,0,0">
                        <StackPanel.Style>
                            <Style TargetType="StackPanel">
                                <Setter Property="Visibility" Value="Collapsed"/>
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding Status}" Value="오류">
                                        <Setter Property="Visibility" Value="Visible"/>
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </StackPanel.Style>
                        <TextBlock Text="&#xE7BA;" Style="{StaticResource FluentIcon}" Foreground="{StaticResource ErrorBrush}" FontSize="13" Margin="0,0,6,0"/>
                        <TextBlock Text="{Binding Error}" Foreground="{StaticResource ErrorBrush}" FontSize="11" TextWrapping="Wrap" MaxWidth="300"/>
                    </StackPanel>
                </StackPanel>
            </Border>
        </DataTemplate>
    </Window.Resources>

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <!-- ===== 상단 툴바 (슬림, 전체가 드래그 핸들) ===== -->
        <Border x:Name="ToolbarRow" Grid.Row="0" Background="{StaticResource PanelBg}"
                BorderBrush="{StaticResource AccentFadeBrush}" BorderThickness="0,0,0,2" Padding="20,9,0,9"
                PreviewMouseLeftButtonDown="TitleBar_PreviewMouseLeftButtonDown">
            <DockPanel>
                <!-- 브랜드 -->
                <StackPanel DockPanel.Dock="Left" Orientation="Horizontal"
                            VerticalAlignment="Center" Margin="0,0,12,0">
                    <Border Width="26" Height="26" CornerRadius="7" Background="{StaticResource AccentGradient}">
                        <TextBlock Text="&#xE896;" Style="{StaticResource FluentIcon}" Foreground="White" FontSize="14"/>
                    </Border>
                    <TextBlock Text="Video Downloader" Foreground="{StaticResource TextPrimary}"
                               FontWeight="SemiBold" FontSize="13.5" VerticalAlignment="Center" Margin="9,0,0,0"/>
                </StackPanel>

                <!-- 네비게이션 (Fluent 아이콘) -->
                <StackPanel DockPanel.Dock="Left" Orientation="Horizontal" VerticalAlignment="Center">
                    <Button Name="NavBack" Style="{StaticResource IconButton}" Content="&#xE76B;" ToolTip="뒤로 (Alt+←)" Margin="0,0,3,0" Click="NavBack_Click"/>
                    <Button Name="NavForward" Style="{StaticResource IconButton}" Content="&#xE76C;" ToolTip="앞으로 (Alt+→)" Margin="0,0,3,0" Click="NavForward_Click"/>
                    <Button Name="NavRefresh" Style="{StaticResource IconButton}" Content="&#xE72C;" ToolTip="새로고침 (F5)" Margin="0,0,3,0" Click="NavRefresh_Click"/>
                    <Button Name="NavHome" Style="{StaticResource IconButton}" Content="&#xE80F;" ToolTip="홈" Click="NavHome_Click"/>
                </StackPanel>

                <!-- 우측 액션 + 캡션 (Fluent 아이콘 + 툴팁) -->
                <StackPanel DockPanel.Dock="Right" Orientation="Horizontal" VerticalAlignment="Center" Margin="10,0,0,0">
                    <Button Name="BookmarksBtn" Style="{StaticResource IconButton}" Content="&#xE734;" ToolTip="즐겨찾기" Margin="0,0,2,0" Click="ToggleBookmarks"/>
                    <Button Name="HistoryBtn" Style="{StaticResource IconButton}" Content="&#xE823;" ToolTip="방문 기록" Margin="0,0,2,0" Click="ToggleHistory"/>
                    <Button Name="TabSearchBtn" Style="{StaticResource IconButton}" Content="&#xE721;" ToolTip="탭 검색 (Ctrl+Shift+A)" Margin="0,0,2,0" Click="ToggleTabSearch"/>
                    <Button Name="DownloadsBtn" Style="{StaticResource IconButton}" Content="&#xE896;" ToolTip="다운로드 (Ctrl+J)" Margin="0,0,2,0" Click="ToggleDownloads"/>
                    <Button Style="{StaticResource IconButton}" Content="&#xE8B7;" ToolTip="저장 폴더 열기" Margin="0,0,2,0" Click="OpenFolder_Click"/>
                    <Button Name="LinkBtn" Style="{StaticResource IconButton}" Content="&#xE71B;" ToolTip="링크로 받기 (YouTube·Instagram·X)" Margin="0,0,2,0" Click="ToggleLink"/>
                    <Button x:Name="PrivateBtn" Style="{StaticResource IconButton}" Content="&#xE72E;" ToolTip="개인정보 보호 모드(InPrivate)" Margin="0,0,2,0" Click="TogglePrivate_Click"/>
                    <Button Style="{StaticResource IconButton}" Content="&#xE713;" ToolTip="설정" Margin="0,0,8,0" Click="Settings_Click"/>
                    <Button Style="{StaticResource PrimaryButton}" Content="이동" ToolTip="주소로 이동 (Enter)" Height="32" Click="Go_Click"/>
                    <!-- 구분선 (좌우 대칭 여백) -->
                    <Border Width="1" Background="{StaticResource BorderSubtle}" Margin="10,8"/>
                    <!-- 윈도우 캡션 컨트롤 (고정폭, 서로 밀착) -->
                    <Button Style="{StaticResource CaptionButton}" Content="&#xE921;" ToolTip="최소화" Click="Minimize_Click"/>
                    <Button Name="MaxRestoreBtn" Style="{StaticResource CaptionButton}" Content="&#xE922;" ToolTip="최대화" Click="MaxRestore_Click"/>
                    <Button Style="{StaticResource CloseButton}" Content="&#xE8BB;" ToolTip="닫기" Click="Close_Click"/>
                </StackPanel>

                <!-- 주소창 -->
                <Border Background="{StaticResource GlassBg}" BorderBrush="{StaticResource BorderBrush}"
                        BorderThickness="1" CornerRadius="8" Height="32" VerticalAlignment="Center">
                    <TextBox Name="AddressBox" Style="{StaticResource DarkTextBox}"
                             PreviewKeyDown="AddressBox_PreviewKeyDown" TextChanged="AddressBox_TextChanged"
                             BorderThickness="0" Background="Transparent"
                             Padding="14,0" FontSize="13" VerticalContentAlignment="Center"/>
                </Border>
            </DockPanel>
        </Border>

        <!-- ===== 북마크바 (T1-6, Ctrl+Shift+B 토글) ===== -->
        <Border x:Name="BookmarkBar" Grid.Row="1" Background="{StaticResource PanelBg}"
                BorderBrush="{StaticResource BorderSubtle}" BorderThickness="0,0,0,1" Padding="8,3"
                Visibility="Collapsed">
            <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Disabled">
                <ItemsControl x:Name="BookmarkBarList" ItemsSource="{Binding}">
                    <ItemsControl.ItemsPanel>
                        <ItemsPanelTemplate>
                            <StackPanel Orientation="Horizontal"/>
                        </ItemsPanelTemplate>
                    </ItemsControl.ItemsPanel>
                    <ItemsControl.ItemTemplate>
                        <DataTemplate>
                            <Button Style="{StaticResource FlatButton}" Click="BookmarkBar_Click"
                                    Padding="10,4" Margin="2,1" ToolTip="{Binding Url}">
                                <TextBlock Text="{Binding Title}" TextTrimming="CharacterEllipsis"
                                           MaxWidth="130" FontSize="12"/>
                            </Button>
                        </DataTemplate>
                    </ItemsControl.ItemTemplate>
                </ItemsControl>
            </ScrollViewer>
        </Border>

        <!-- ===== 탭 스트립 (Phase A) ===== -->
        <Border x:Name="TabStripRow" Grid.Row="2" Background="{StaticResource PanelBg}"
                BorderBrush="{StaticResource BorderSubtle}" BorderThickness="0,0,0,1" Padding="8,4,8,0">
            <DockPanel>
                <Button x:Name="NewTabBtn" DockPanel.Dock="Right" Style="{StaticResource IconButton}"
                        Content="&#xE710;" FontSize="13" ToolTip="새 탭 (Ctrl+T)" Click="NewTab_Click"
                        Margin="4,0,2,3" VerticalAlignment="Center"/>
                <ScrollViewer HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Disabled"
                              VerticalAlignment="Bottom">
                    <ItemsControl x:Name="TabList">
                        <ItemsControl.ItemsPanel>
                            <ItemsPanelTemplate>
                                <StackPanel Orientation="Horizontal"/>
                            </ItemsPanelTemplate>
                        </ItemsControl.ItemsPanel>
                        <ItemsControl.ItemTemplate>
                            <DataTemplate>
                                <Grid Margin="0,0,4,0" MinWidth="130" MaxWidth="220">
                                    <Border x:Name="TabBg" CornerRadius="8,8,0,0"
                                            Background="{StaticResource GlassBg}"
                                            BorderBrush="{StaticResource BorderSubtle}" BorderThickness="1,1,1,0"
                                            Padding="10,7,4,7" MouseLeftButtonUp="Tab_Click"
                                            PreviewMouseDown="Tab_PreviewMouseDown"
                                            ToolTip="{Binding Url}">
                                        <DockPanel>
                                            <Button DockPanel.Dock="Right" Style="{StaticResource CardActionButton}"
                                                    Content="&#xE711;" FontSize="9" Padding="5,3" Margin="4,0,0,0"
                                                    Click="TabClose_Click" ToolTip="탭 닫기 (Ctrl+W)"
                                                    VerticalAlignment="Center"/>
                                            <TextBlock x:Name="AudioIcon" Text="&#xE767;" Style="{StaticResource FluentIcon}"
                                                       FontSize="11" Margin="0,0,6,0" VerticalAlignment="Center"
                                                       Visibility="Collapsed" Cursor="Hand"
                                                       MouseLeftButtonUp="TabAudio_Click"/>
                                            <TextBlock Text="{Binding Title}" TextTrimming="CharacterEllipsis"
                                                       FontSize="12" VerticalAlignment="Center"/>
                                        </DockPanel>
                                    </Border>
                                </Grid>
                                <DataTemplate.Triggers>
                                    <DataTrigger Binding="{Binding IsActive}" Value="True">
                                        <Setter TargetName="TabBg" Property="Background" Value="{StaticResource CardBg}"/>
                                        <Setter TargetName="TabBg" Property="BorderBrush" Value="{StaticResource AccentFadeBrush}"/>
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding IsAudioPlaying}" Value="True">
                                        <Setter TargetName="AudioIcon" Property="Visibility" Value="Visible"/>
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding IsMuted}" Value="True">
                                        <Setter TargetName="AudioIcon" Property="Text" Value="&#xE74F;"/>
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding IsPinned}" Value="True">
                                        <Setter TargetName="TabBg" Property="Background" Value="{StaticResource AccentFadeBrush}"/>
                                    </DataTrigger>
                                </DataTemplate.Triggers>
                            </DataTemplate>
                        </ItemsControl.ItemTemplate>
                    </ItemsControl>
                </ScrollViewer>
            </DockPanel>
        </Border>

        <!-- ===== 본문 ===== -->
        <Grid Grid.Row="3">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition x:Name="RightCol" Width="420" MinWidth="56" MaxWidth="900"/>
            </Grid.ColumnDefinitions>

            <Grid Grid.Column="0">
                <Grid.RowDefinitions>
                    <RowDefinition Height="*"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>

                <Border Grid.Row="0" ClipToBounds="True" Background="Black">
                    <Grid x:Name="TabHost" Background="Black"/>
                </Border>

                <!-- 페이지 내 검색 바 (T1-3): WebView2(airspace) 아래에 도킹 -->
                <Border x:Name="FindBar" Grid.Row="1" Visibility="Collapsed"
                        Background="{StaticResource PanelBg}" BorderBrush="{StaticResource BorderSubtle}"
                        BorderThickness="0,1,0,0" Padding="12,6">
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                        <CheckBox x:Name="FindCaseBox" Style="{StaticResource DarkCheckBox}" Content="Aa"
                                  ToolTip="대소문자 구분" Margin="0,0,8,0" VerticalAlignment="Center"
                                  Checked="FindOption_Changed" Unchecked="FindOption_Changed"/>
                        <CheckBox x:Name="FindWordBox" Style="{StaticResource DarkCheckBox}" Content="단어"
                                  ToolTip="전체 단어 일치" Margin="0,0,10,0" VerticalAlignment="Center"
                                  Checked="FindOption_Changed" Unchecked="FindOption_Changed"/>
                        <Border Background="{StaticResource GlassBg}" BorderBrush="{StaticResource BorderBrush}"
                                BorderThickness="1" CornerRadius="7" Width="230">
                            <TextBox x:Name="FindBox" Style="{StaticResource DarkTextBox}" BorderThickness="0"
                                     Background="Transparent" Padding="10,4" FontSize="12.5"
                                     VerticalContentAlignment="Center"
                                     TextChanged="FindBox_TextChanged" PreviewKeyDown="FindBox_PreviewKeyDown"/>
                        </Border>
                        <Button Style="{StaticResource IconButton}" Content="&#xE74A;" ToolTip="이전 매치 (Shift+F3)"
                                Margin="6,0,0,0" Click="FindPrev_Click"/>
                        <Button Style="{StaticResource IconButton}" Content="&#xE74B;" ToolTip="다음 매치 (F3)"
                                Margin="2,0,0,0" Click="FindNext_Click"/>
                        <TextBlock x:Name="FindStatus" Text="" Foreground="{StaticResource TextMuted}" FontSize="11.5"
                                   VerticalAlignment="Center" Margin="10,0,4,0" MinWidth="52"/>
                        <Button Style="{StaticResource IconButton}" Content="&#xE711;" ToolTip="닫기 (Esc)"
                                Click="FindClose_Click"/>
                    </StackPanel>
                </Border>
            </Grid>

            <!-- 리사이즈 핸들 (펼침 상태에서만 노출). 드래그로 우측 패널 폭 변경. -->
            <GridSplitter x:Name="RightSplitter" Grid.Column="1" Width="7"
                          HorizontalAlignment="Center" VerticalAlignment="Stretch"
                          ResizeBehavior="PreviousAndNext" ResizeDirection="Columns"
                          Background="Transparent" Cursor="SizeWE"
                          DragCompleted="RightSplitter_DragCompleted">
                <GridSplitter.Template>
                    <ControlTemplate TargetType="GridSplitter">
                        <Border x:Name="handle" Background="Transparent">
                            <Rectangle Width="1" HorizontalAlignment="Center" Fill="{StaticResource BorderSubtle}"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="handle" Property="Background" Value="{StaticResource AccentFadeBrush}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </GridSplitter.Template>
            </GridSplitter>

            <!-- 범용 우측 패널: 헤더(토글 버튼, 항상 노출) + 본문(펼침 시). 접기/펼치기·폭·상태 저장. -->
            <Border Grid.Column="2" Background="{StaticResource PanelBg}"
                    BorderBrush="{StaticResource BorderSubtle}" BorderThickness="1,0,0,0">
                <Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"/>
                        <RowDefinition Height="*"/>
                    </Grid.RowDefinitions>

                    <DockPanel Grid.Row="0" Margin="10,12,10,8" LastChildFill="True">
                        <Button x:Name="PanelToggle" DockPanel.Dock="Right" Style="{StaticResource IconButton}"
                                Click="PanelToggle_Click" ToolTip="패널 접기"
                                VerticalAlignment="Center" Margin="4,0,0,0" Content="&#xE76C;"/>
                        <Border x:Name="PanelCountBadge" DockPanel.Dock="Right" Background="{StaticResource GlassBg}"
                                CornerRadius="9" Padding="9,2" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="0,0,8,0">
                            <TextBlock Text="{Binding Items.Count}" Foreground="{StaticResource TextSecondary}" FontSize="11"/>
                        </Border>
                        <TextBlock x:Name="PanelTitle" Text="다운로드" Foreground="{StaticResource TextPrimary}"
                                   FontWeight="SemiBold" FontSize="13.5" VerticalAlignment="Center"/>
                    </DockPanel>

                    <Grid Grid.Row="1" x:Name="PanelBody">
                        <StackPanel VerticalAlignment="Top" HorizontalAlignment="Center" Margin="0,60,0,0"
                                    Visibility="{Binding Items.Count, Converter={StaticResource InverseCountToVisibility}}">
                            <Border Width="54" Height="54" CornerRadius="14" Background="{StaticResource GlassBg}"
                                    BorderBrush="{StaticResource BorderBrush}" BorderThickness="1" HorizontalAlignment="Center">
                                <TextBlock Text="&#xE8B2;" Style="{StaticResource FluentIcon}" FontSize="24" Foreground="{StaticResource TextMuted}"/>
                            </Border>
                            <TextBlock Text="영상을 재생하면 여기에 나타납니다" Foreground="{StaticResource TextSecondary}"
                                       FontSize="13" FontWeight="Medium" HorizontalAlignment="Center" Margin="0,14,0,2"/>
                            <TextBlock Text="탐지 즉시 자동으로 목록에 추가돼요" Foreground="{StaticResource TextMuted}"
                                       FontSize="11.5" HorizontalAlignment="Center"/>
                        </StackPanel>

                        <ScrollViewer VerticalScrollBarVisibility="Auto" Padding="16,2,16,16">
                            <ItemsControl ItemsSource="{Binding Items}"/>
                        </ScrollViewer>
                    </Grid>
                </Grid>
            </Border>
        </Grid>

        <!-- ===== 상태 표시줄 ===== -->
        <Border x:Name="StatusBar" Grid.Row="4" Background="{StaticResource PanelBg}"
                BorderBrush="{StaticResource BorderSubtle}" BorderThickness="0,1,0,0" Padding="16,5">
            <TextBlock Name="StatusText" Foreground="{StaticResource TextMuted}" FontSize="11"
                       TextTrimming="CharacterEllipsis" Text="준비"/>
        </Border>

        <!-- ===== 즐겨찾기 플라이아웃 ===== -->
        <Popup Name="BookmarksPopup" PlacementTarget="{Binding ElementName=BookmarksBtn}"
               Placement="Bottom" HorizontalOffset="-10" VerticalOffset="6"
               StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
                    BorderThickness="1" CornerRadius="12" Padding="8" Width="320" MaxHeight="460">
                <StackPanel>
                    <DockPanel Margin="6,4,6,6">
                        <TextBlock Text="즐겨찾기" Foreground="{StaticResource TextPrimary}" FontWeight="SemiBold" VerticalAlignment="Center"/>
                        <Button DockPanel.Dock="Right" Style="{StaticResource CardActionButton}" Content="＋ 현재 페이지 추가" Click="AddBookmark_Click" HorizontalAlignment="Right"/>
                    </DockPanel>
                    <Border Background="{StaticResource BorderSubtle}" Height="1" Margin="0,0,0,4"/>
                    <ItemsControl Name="BookmarksList">
                        <ItemsControl.ItemTemplate>
                            <DataTemplate>
                                <DockPanel Margin="0,1">
                                    <Button DockPanel.Dock="Right" Style="{StaticResource CardActionButton}" Content="✕"
                                            Click="RemoveBookmark_Click" Padding="8,5" Margin="6,0,0,0" VerticalAlignment="Center"/>
                                    <Button Style="{StaticResource FlatButton}" Click="OpenBookmark_Click" HorizontalAlignment="Stretch">
                                        <StackPanel>
                                            <TextBlock Text="{Binding Title}" TextTrimming="CharacterEllipsis" FontSize="12.5" FontWeight="Medium"/>
                                            <TextBlock Text="{Binding Url}" Foreground="{StaticResource TextMuted}" FontSize="10.5" TextTrimming="CharacterEllipsis"/>
                                        </StackPanel>
                                    </Button>
                                </DockPanel>
                            </DataTemplate>
                        </ItemsControl.ItemTemplate>
                    </ItemsControl>
                </StackPanel>
            </Border>
        </Popup>

        <!-- ===== 히스토리 플라이아웃 ===== -->
        <Popup Name="HistoryPopup" PlacementTarget="{Binding ElementName=HistoryBtn}"
               Placement="Bottom" HorizontalOffset="-10" VerticalOffset="6"
               StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
                    BorderThickness="1" CornerRadius="12" Padding="8" Width="340" MaxHeight="480">
                <StackPanel>
                    <DockPanel Margin="6,4,6,6">
                        <TextBlock Text="방문 기록" Foreground="{StaticResource TextPrimary}" FontWeight="SemiBold" VerticalAlignment="Center"/>
                        <Button DockPanel.Dock="Right" Style="{StaticResource CardActionButton}" Content="🗑 전체 삭제" Click="ClearHistory_Click" HorizontalAlignment="Right"/>
                    </DockPanel>
                    <Border Background="{StaticResource BorderSubtle}" Height="1" Margin="0,0,0,4"/>
                    <ScrollViewer VerticalScrollBarVisibility="Auto" MaxHeight="400">
                        <ItemsControl Name="HistoryList">
                            <ItemsControl.ItemTemplate>
                                <DataTemplate>
                                    <Button Style="{StaticResource FlatButton}" Click="OpenHistory_Click" HorizontalAlignment="Stretch" Margin="0,1">
                                        <StackPanel>
                                            <DockPanel>
                                                <TextBlock DockPanel.Dock="Right" Text="{Binding VisitedAt, StringFormat=HH:mm}" Foreground="{StaticResource TextMuted}" FontSize="10.5" VerticalAlignment="Center"/>
                                                <TextBlock Text="{Binding Title}" TextTrimming="CharacterEllipsis" FontSize="12.5" FontWeight="Medium"/>
                                            </DockPanel>
                                            <TextBlock Text="{Binding Url}" Foreground="{StaticResource TextMuted}" FontSize="10.5" TextTrimming="CharacterEllipsis"/>
                                        </StackPanel>
                                    </Button>
                                </DataTemplate>
                            </ItemsControl.ItemTemplate>
                        </ItemsControl>
                    </ScrollViewer>
                </StackPanel>
            </Border>
        </Popup>

        <!-- ===== 주소창 자동완성 제안 ===== -->
        <Popup Name="AddressPopup" PlacementTarget="{Binding ElementName=AddressBox}"
               Placement="Bottom" StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade"
               Width="560" MaxHeight="380">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
                    BorderThickness="1" CornerRadius="10" Padding="4">
                <ListBox Name="AddressSuggestions" Style="{StaticResource SuggestList}"
                         ItemContainerStyle="{StaticResource SuggestItem}"
                         PreviewMouseLeftButtonUp="AddressSuggestion_Click">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel>
                                <TextBlock Text="{Binding Title}" TextTrimming="CharacterEllipsis" FontSize="12.5" FontWeight="Medium"/>
                                <TextBlock Text="{Binding Url}" Foreground="{StaticResource TextMuted}" FontSize="10.5" TextTrimming="CharacterEllipsis"/>
                            </StackPanel>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>
            </Border>
        </Popup>

        <!-- ===== 다운로드 플라이아웃 (T1-5) ===== -->
        <Popup Name="DownloadsPopup" PlacementTarget="{Binding ElementName=DownloadsBtn}"
               Placement="Bottom" HorizontalOffset="-10" VerticalOffset="6"
               StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
                    BorderThickness="1" CornerRadius="12" Padding="10" Width="420" MaxHeight="460">
                <StackPanel>
                    <DockPanel Margin="6,2,6,8">
                        <TextBlock Text="다운로드" Foreground="{StaticResource TextPrimary}" FontWeight="SemiBold" VerticalAlignment="Center"/>
                        <Button DockPanel.Dock="Right" Style="{StaticResource CardActionButton}" Content="완료 항목 지우기"
                                Click="DownloadsClear_Click" HorizontalAlignment="Right"/>
                    </DockPanel>
                    <ScrollViewer VerticalScrollBarVisibility="Auto" MaxHeight="380">
                        <ItemsControl Name="DownloadsList">
                            <ItemsControl.ItemTemplate>
                                <DataTemplate>
                                    <Border Background="{StaticResource GlassBg}" BorderBrush="{StaticResource BorderSubtle}"
                                            BorderThickness="1" CornerRadius="8" Padding="10" Margin="0,0,0,8">
                                        <StackPanel>
                                            <DockPanel>
                                                <TextBlock DockPanel.Dock="Right" Text="{Binding SpeedText}" Foreground="{StaticResource TextMuted}"
                                                           FontSize="11" VerticalAlignment="Center" Margin="8,0,0,0"/>
                                                <TextBlock Text="{Binding FileName}" Foreground="{StaticResource TextPrimary}"
                                                           FontSize="12.5" FontWeight="Medium" TextTrimming="CharacterEllipsis"/>
                                            </DockPanel>
                                            <ProgressBar Value="{Binding Percent}" Maximum="100" Height="6" Margin="0,7,0,6"
                                                         Style="{StaticResource AccentProgressBar}"/>
                                            <DockPanel>
                                                <TextBlock Text="{Binding State}" Foreground="{StaticResource TextSecondary}" FontSize="11" VerticalAlignment="Center"/>
                                                <StackPanel DockPanel.Dock="Right" Orientation="Horizontal">
                                                    <Button Style="{StaticResource CardActionButton}" Content="일시정지" Click="DlPause_Click" Margin="0,0,5,0"/>
                                                    <Button Style="{StaticResource CardActionButton}" Content="재개" Click="DlResume_Click" Margin="0,0,5,0"/>
                                                    <Button Style="{StaticResource CardActionButton}" Content="취소" Click="DlCancel_Click"/>
                                                </StackPanel>
                                            </DockPanel>
                                        </StackPanel>
                                    </Border>
                                </DataTemplate>
                            </ItemsControl.ItemTemplate>
                        </ItemsControl>
                    </ScrollViewer>
                    <TextBlock Text="페이지 내 파일 다운로드가 여기 표시됩니다" Foreground="{StaticResource TextMuted}"
                               FontSize="11" HorizontalAlignment="Center" Margin="0,4,0,0"
                               x:Name="DownloadsEmptyHint"/>
                </StackPanel>
            </Border>
        </Popup>

        <!-- ===== 탭 검색 팝업 (T2-8, Ctrl+Shift+A) ===== -->
        <Popup Name="TabSearchPopup" PlacementTarget="{Binding ElementName=AddressBox}"
               Placement="Center" StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade"
               Width="520">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
                    BorderThickness="1" CornerRadius="12" Padding="10">
                <StackPanel>
                    <Border Background="{StaticResource GlassBg}" BorderBrush="{StaticResource BorderBrush}"
                            BorderThickness="1" CornerRadius="8" Margin="2,0,2,8">
                        <TextBox Name="TabSearchBox" Style="{StaticResource DarkTextBox}" BorderThickness="0"
                                 Background="Transparent" Padding="12,9" FontSize="13"
                                 TextChanged="TabSearchBox_TextChanged" PreviewKeyDown="TabSearchBox_PreviewKeyDown"/>
                    </Border>
                    <ListBox Name="TabSearchResults" Style="{StaticResource SuggestList}"
                             ItemContainerStyle="{StaticResource SuggestItem}" MaxHeight="320"
                             PreviewMouseLeftButtonUp="TabSearchResult_Click">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <StackPanel>
                                    <DockPanel>
                                        <TextBlock DockPanel.Dock="Right" Text="{Binding IsClosed, Converter={x:Static feat:BoolToClosedConverter.Instance}}"
                                                   Foreground="{StaticResource TextMuted}" FontSize="10.5" VerticalAlignment="Center"/>
                                        <TextBlock Text="{Binding Title}" TextTrimming="CharacterEllipsis" FontSize="12.5" FontWeight="Medium"/>
                                    </DockPanel>
                                    <TextBlock Text="{Binding Url}" Foreground="{StaticResource TextMuted}" FontSize="10.5" TextTrimming="CharacterEllipsis"/>
                                </StackPanel>
                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>
                </StackPanel>
            </Border>
        </Popup>

        <!-- ===== 링크로 받기 플라이아웃 (YouTube/Instagram/X URL 붙여넣기) ===== -->
        <Popup Name="LinkPopup" PlacementTarget="{Binding ElementName=LinkBtn}"
               Placement="Bottom" HorizontalOffset="-10" VerticalOffset="6"
               StaysOpen="False" AllowsTransparency="True" PopupAnimation="Fade">
            <Border Background="{StaticResource CardBg}" BorderBrush="{StaticResource BorderBrush}"
                    BorderThickness="1" CornerRadius="12" Padding="10" Width="380">
                <StackPanel>
                    <TextBlock Text="링크로 받기" Foreground="{StaticResource TextPrimary}" FontWeight="SemiBold" Margin="6,2,6,4"/>
                    <TextBlock Text="YouTube·Instagram·X 등 영상 링크를 붙여넣고 받기를 누르세요" Foreground="{StaticResource TextMuted}" FontSize="11" Margin="6,0,6,10" TextWrapping="Wrap"/>
                    <DockPanel>
                        <Button DockPanel.Dock="Right" Style="{StaticResource PrimaryButton}" Content="받기" Margin="8,0,0,0" Click="LinkDownload_Click"/>
                        <Border Background="{StaticResource GlassBg}" BorderBrush="{StaticResource BorderBrush}" BorderThickness="1" CornerRadius="8">
                            <TextBox Name="LinkBox" Style="{StaticResource DarkTextBox}" BorderThickness="0" Background="Transparent"
                                     Padding="12,8" PreviewKeyDown="LinkBox_PreviewKeyDown"/>
                        </Border>
                    </DockPanel>
                </StackPanel>
            </Border>
        </Popup>
    </Grid>
</Window>