Refresh uploader UI styling

clients/photobooth-uploader/PhotoboothUploader/App.axaml

@@ -6,5 +6,85 @@
 
     <Application.Styles>
         <FluentTheme />
+        <Style>
+            <Style.Resources>
+                <Color x:Key="BrandRose">#FFB6C1</Color>
+                <Color x:Key="BrandRoseStrong">#FF69B4</Color>
+                <Color x:Key="BrandRoseSoft">#FFE5EC</Color>
+                <Color x:Key="BrandGold">#FFD700</Color>
+                <Color x:Key="BrandSky">#87CEEB</Color>
+                <Color x:Key="BrandSkySoft">#E0F5FF</Color>
+                <Color x:Key="BrandNavy">#0F4C75</Color>
+                <Color x:Key="BrandSlate">#1F2937</Color>
+                <Color x:Key="BrandCream">#FFF8F5</Color>
+
+                <SolidColorBrush x:Key="TextPrimaryBrush" Color="{DynamicResource BrandSlate}" />
+                <SolidColorBrush x:Key="TextMutedBrush" Color="#6B7280" />
+                <SolidColorBrush x:Key="CardBorderBrush" Color="{DynamicResource BrandRoseSoft}" />
+                <SolidColorBrush x:Key="CardBackgroundBrush" Color="#FFFFFF" />
+                <SolidColorBrush x:Key="AccentBackgroundBrush" Color="{DynamicResource BrandSkySoft}" />
+                <SolidColorBrush x:Key="InputBorderBrush" Color="{DynamicResource BrandRoseSoft}" />
+                <SolidColorBrush x:Key="InputBackgroundBrush" Color="#FFFFFF" />
+                <SolidColorBrush x:Key="PrimaryButtonBrush" Color="{DynamicResource BrandRoseStrong}" />
+                <SolidColorBrush x:Key="PrimaryButtonTextBrush" Color="#FFFFFF" />
+                <SolidColorBrush x:Key="SecondaryButtonBrush" Color="{DynamicResource BrandSky}" />
+                <SolidColorBrush x:Key="SecondaryButtonTextBrush" Color="{DynamicResource BrandNavy}" />
+
+                <LinearGradientBrush x:Key="WindowBackgroundBrush" StartPoint="0,0" EndPoint="1,1">
+                    <GradientStop Color="{DynamicResource BrandCream}" Offset="0" />
+                    <GradientStop Color="{DynamicResource BrandRoseSoft}" Offset="0.5" />
+                    <GradientStop Color="{DynamicResource BrandSkySoft}" Offset="1" />
+                </LinearGradientBrush>
+            </Style.Resources>
+        </Style>
+
+        <Style Selector="Window">
+            <Setter Property="Background" Value="{DynamicResource WindowBackgroundBrush}" />
+            <Setter Property="FontFamily" Value="Inter" />
+            <Setter Property="Foreground" Value="{DynamicResource TextPrimaryBrush}" />
+        </Style>
+
+        <Style Selector="TextBlock.title">
+            <Setter Property="FontSize" Value="20" />
+            <Setter Property="FontWeight" Value="SemiBold" />
+        </Style>
+
+        <Style Selector="TextBlock.subtitle">
+            <Setter Property="FontSize" Value="12" />
+            <Setter Property="Foreground" Value="{DynamicResource TextMutedBrush}" />
+        </Style>
+
+        <Style Selector="Border.card">
+            <Setter Property="Background" Value="{DynamicResource CardBackgroundBrush}" />
+            <Setter Property="BorderBrush" Value="{DynamicResource CardBorderBrush}" />
+            <Setter Property="BorderThickness" Value="1" />
+            <Setter Property="CornerRadius" Value="12" />
+        </Style>
+
+        <Style Selector="Border.card.accent">
+            <Setter Property="Background" Value="{DynamicResource AccentBackgroundBrush}" />
+        </Style>
+
+        <Style Selector="TextBox">
+            <Setter Property="BorderBrush" Value="{DynamicResource InputBorderBrush}" />
+            <Setter Property="Background" Value="{DynamicResource InputBackgroundBrush}" />
+            <Setter Property="CornerRadius" Value="8" />
+            <Setter Property="Padding" Value="10,8" />
+        </Style>
+
+        <Style Selector="Button">
+            <Setter Property="CornerRadius" Value="8" />
+            <Setter Property="Padding" Value="12,8" />
+        </Style>
+
+        <Style Selector="Button.primary">
+            <Setter Property="Background" Value="{DynamicResource PrimaryButtonBrush}" />
+            <Setter Property="Foreground" Value="{DynamicResource PrimaryButtonTextBrush}" />
+        </Style>
+
+        <Style Selector="Button.secondary">
+            <Setter Property="Background" Value="{DynamicResource SecondaryButtonBrush}" />
+            <Setter Property="Foreground" Value="{DynamicResource SecondaryButtonTextBrush}" />
+        </Style>
     </Application.Styles>
-</Application>
+</Application>