Added sidebar styles

gtk-3.0/scss/_global.scss

@@ -30,12 +30,18 @@ $success_color: #53a93f;
 $warning_color: #f57900;
 $error_color: #cc0000;
 
+$toolbar_bg_color: $bg_color;
+$toolbar_fg_color: $fg_color;
+
 $titlebar_bg_color: $dark_bg_color;
 $titlebar_fg_color: $dark_fg_color;
 
 $menu_bg_color: $dark_bg_color;
 $menu_fg_color: $dark_fg_color;
 
+$menubar_bg_color: $dark_bg_color;
+$menubar_fg_color: $dark_fg_color;
+
 /* widget styles */
 $roundness: 2px;
 $spacing: 5px;

gtk-3.0/scss/_sidebar.scss

@@ -0,0 +1,54 @@
+@import "functions";
+
+.sidebar {
+    &, &.view, & .view, & GtkScrolledWindow {
+        background-color: $bg_color;
+        color: mix($fg_color, $bg_color, 0.1);
+
+        &.separator {
+            border-width: 1px;
+            border-style: solid;
+            border-color: shade($bg_color, 0.9);
+            color: shade($bg_color, 0.9);
+        }
+    }
+
+    row, .view row {
+       &:selected {
+           &, &:hover, &:focus {
+               border-color: border_normal($selected_bg_color);
+               background-color: $selected_bg_color;
+               background-image: none;
+               color: $selected_fg_color;
+           }
+
+           &:prelight {
+               border-color: border_focus($selected_bg_color);
+               background-color: shade($selected_bg_color, 1.05);
+               background-image: none;
+               color: $selected_fg_color;
+           }
+       }
+
+        &:prelight {
+            border-color: shade($bg_color, 1.05);
+            background-color: shade($bg_color, 1.05);
+            background-image: none;
+            color: $fg_color;
+        }
+    }
+
+    .frame { border-width: 0; }
+
+    GtkAssistant & {
+        padding: 4px;
+        border-width: 0 1px 0 0;
+        border-style: solid;
+        border-right-color: border_normal($bg_color);
+        border-radius: 0;
+        background-color: $bg_color;
+        color: mix($fg_color, $bg_color, 0.1);
+
+        .highlight { font: bold; }
+    }
+}

gtk-3.0/scss/widgets.scss

@@ -5,4 +5,5 @@
 @import "entry";
 @import "menu";
 @import "toolbar";
+@import "sidebar";
 @import "window";