diff --git a/NucleicRemote/NucleicRemote/Views/Theme.swift b/NucleicRemote/NucleicRemote/Views/Theme.swift
index c6bcce3..d6a3285 100644
--- a/NucleicRemote/NucleicRemote/Views/Theme.swift
+++ b/NucleicRemote/NucleicRemote/Views/Theme.swift
@@ -354,6 +354,22 @@ struct GlassSurface: ViewModifier {
     }
 }
 
+/// A circular Liquid Glass backing for a floating round control (the New-chat FAB). Real
+/// interactive `glassEffect` on iOS 26; an ultra-thin material disc with a hairline edge and a
+/// soft shadow on earlier systems so it still lifts off the list.
+struct GlassCircle: ViewModifier {
+    func body(content: Content) -> some View {
+        if #available(iOS 26.0, *) {
+            content.glassEffect(.regular.interactive(), in: .circle)
+        } else {
+            content
+                .background(.ultraThinMaterial, in: .circle)
+                .overlay(Circle().strokeBorder(Color.primary.opacity(0.08), lineWidth: 1))
+                .shadow(color: .black.opacity(0.2), radius: 6, y: 2)
+        }
+    }
+}
+
 /// A lifted card surface with a hairline border — the mobile echo of `AppTheme.surface`.
 struct CardBackground: ViewModifier {
     var padding: CGFloat = 14