add segmented control

crates/theme/src/lib.rs

@@ -160,6 +160,8 @@ pub struct Elevations {
     pub popover: Elevation,
     /// Modal dialogs sit higher with a wider one.
     pub dialog: Elevation,
+    /// Raised plates inside controls — a selected segmented segment.
+    pub control: Elevation,
 }
 
 impl Elevations {
@@ -168,6 +170,7 @@ impl Elevations {
             return Self {
                 popover: Elevation::single(Shadow::black(0., 4., 24., 0.3)),
                 dialog: Elevation::single(Shadow::black(0., 8., 40., 0.35)),
+                control: Elevation::single(Shadow::black(0., 1., 2., 0.25)),
             };
         }
 
@@ -181,6 +184,7 @@ impl Elevations {
                     Shadow::black(0., 8., 40., 0.14),
                     Shadow::black(0., 1., 2., 0.06),
                 ),
+                control: Elevation::single(Shadow::black(0., 1., 2., 0.1)),
             },
             SourceKind::Windows => Self {
                 popover: Elevation::layered(
@@ -191,11 +195,13 @@ impl Elevations {
                     Shadow::black(0., 16., 32., 0.16),
                     Shadow::black(0., 4., 8., 0.1),
                 ),
+                control: Elevation::single(Shadow::black(0., 1., 2., 0.12)),
             },
             SourceKind::Omarchy | SourceKind::Kde | SourceKind::Gnome | SourceKind::Fallback => {
                 Self {
                     popover: Elevation::single(Shadow::black(0., 3., 6., 0.2)),
                     dialog: Elevation::single(Shadow::black(0., 9., 18., 0.24)),
+                    control: Elevation::single(Shadow::black(0., 1., 2., 0.16)),
                 }
             }
         }