theme: derive elevations from the platform's native shadows

crates/core/src/alert.rs

@@ -7,7 +7,7 @@ use gpui::{
     Styled as _, Window, deferred, div, ease_out_quint, px,
 };
 use gpui_native_icons::{IconRole, icon};
-use gpui_native_theme::{ActiveTheme as _, ThemeVariant};
+use gpui_native_theme::ActiveTheme as _;
 
 use crate::common::DismissHandler;
 use crate::common::v_flex;
@@ -127,13 +127,7 @@ impl RenderOnce for Alert {
         let muted = theme.colors.muted;
         let surface = theme.colors.surface;
         let border = theme.colors.border;
-
-        let mut elevation = theme.elevations.popover;
-        if theme.variant == ThemeVariant::Light {
-            elevation.color = elevation.color.alpha(0.12);
-        }
-        let shadows = elevation.shadows();
-
+        let shadows = theme.elevations.popover.shadows();
         let text_size = theme.sizes.small.text_size;
         let icon_size = theme.sizes.small.icon_size;