style: replace solid accent hover/active with glass effect

- glass-hover: alpha(@foreground,0.08) → alpha(white,0.10)
- glass-active: alpha(@foreground,0.14) → alpha(white,0.50)
- panel, settings, dropdown, tray, notification hover → glass-hover
- battery, wifi, bluetooth connected icons → glass-active
- wifi-icon-box base dimmed to glass-hover for contrast

src/styles/controlpanel/networks.css

@@ -37,7 +37,17 @@
 }
 
 #wifi-connections #device-icon.connected {
-  background-color: @glass-accent;
+  background-color: @glass-active;
+  color: @glass-text;
+}
+
+/* Bluetooth-specific device icon styles */
+#bluetooth-connections #device-icon {
+  background-color: @glass-hover;
+}
+
+#bluetooth-connections #device-icon.connected {
+  background-color: @glass-active;
   color: @glass-text;
 }