Update gtk4 theme

Author: GitHub-Actions

gtk/src/adw-gtk3-dark/gtk-4.0/gtk-dark.css

@@ -27,23 +27,24 @@
 @define-color sidebar_bg_color #303030;
 @define-color sidebar_fg_color white;
 @define-color sidebar_backdrop_color #2a2a2a;
-@define-color sidebar_shade_color rgba(0, 0, 0, 0.36);
+@define-color sidebar_shade_color rgba(0, 0, 0, 0.25);
+@define-color sidebar_border_color rgba(0, 0, 0, 0.36);
 @define-color secondary_sidebar_bg_color #2a2a2a;
 @define-color secondary_sidebar_fg_color white;
 @define-color secondary_sidebar_backdrop_color #272727;
-@define-color secondary_sidebar_shade_color rgba(0, 0, 0, 0.36);
+@define-color secondary_sidebar_shade_color rgba(0, 0, 0, 0.25);
+@define-color secondary_sidebar_border_color rgba(0, 0, 0, 0.36);
 @define-color card_bg_color rgba(255, 255, 255, 0.08);
 @define-color card_fg_color white;
 @define-color card_shade_color rgba(0, 0, 0, 0.36);
 @define-color dialog_bg_color #383838;
 @define-color dialog_fg_color white;
 @define-color popover_bg_color #383838;
 @define-color popover_fg_color white;
-@define-color popover_shade_color rgba(0, 0, 0, 0.36);
+@define-color popover_shade_color rgba(0, 0, 0, 0.25);
 @define-color thumbnail_bg_color #383838;
 @define-color thumbnail_fg_color white;
-@define-color shade_color rgba(0, 0, 0, 0.36);
+@define-color shade_color rgba(0, 0, 0, 0.25);
 @define-color scrollbar_outline_color rgba(0, 0, 0, 0.5);
-
 @import '../gtk-3.0/libadwaita.css';
 @import '../gtk-3.0/libadwaita-tweaks.css';

gtk/src/adw-gtk3-dark/gtk-4.0/gtk.css

@@ -27,23 +27,24 @@
 @define-color sidebar_bg_color #303030;
 @define-color sidebar_fg_color white;
 @define-color sidebar_backdrop_color #2a2a2a;
-@define-color sidebar_shade_color rgba(0, 0, 0, 0.36);
+@define-color sidebar_shade_color rgba(0, 0, 0, 0.25);
+@define-color sidebar_border_color rgba(0, 0, 0, 0.36);
 @define-color secondary_sidebar_bg_color #2a2a2a;
 @define-color secondary_sidebar_fg_color white;
 @define-color secondary_sidebar_backdrop_color #272727;
-@define-color secondary_sidebar_shade_color rgba(0, 0, 0, 0.36);
+@define-color secondary_sidebar_shade_color rgba(0, 0, 0, 0.25);
+@define-color secondary_sidebar_border_color rgba(0, 0, 0, 0.36);
 @define-color card_bg_color rgba(255, 255, 255, 0.08);
 @define-color card_fg_color white;
 @define-color card_shade_color rgba(0, 0, 0, 0.36);
 @define-color dialog_bg_color #383838;
 @define-color dialog_fg_color white;
 @define-color popover_bg_color #383838;
 @define-color popover_fg_color white;
-@define-color popover_shade_color rgba(0, 0, 0, 0.36);
+@define-color popover_shade_color rgba(0, 0, 0, 0.25);
 @define-color thumbnail_bg_color #383838;
 @define-color thumbnail_fg_color white;
-@define-color shade_color rgba(0, 0, 0, 0.36);
+@define-color shade_color rgba(0, 0, 0, 0.25);
 @define-color scrollbar_outline_color rgba(0, 0, 0, 0.5);
-
 @import '../gtk-3.0/libadwaita.css';
 @import '../gtk-3.0/libadwaita-tweaks.css';