<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">

    <!-- Ripple effect for double-tap style feedback -->
    <stroke
        android:width="2dp"
        android:color="#44FFFFFF" />

    <!-- Transparent center -->
    <solid android:color="#00000000" />

</shape>