CustomToggle-ConcaveView.swift

struct ShallowConcaveView : View  {
    let cornerRadius : CGFloat
    
    var body: some View {
        ZStack {
            RoundedRectangle(cornerRadius: cornerRadius)
                .fill(Color(Colors.mainColor))
            RoundedRectangle(cornerRadius: cornerRadius)
                .stroke(Color(Colors.darkShadow), lineWidth: 2)
                .blur(radius: 0.5)
                .offset(x: 1, y: 0.5)
                .mask(RoundedRectangle(cornerRadius: cornerRadius).fill(LinearGradient(colors: [Color(Colors.darkShadow), Color.clear], startPoint: .top, endPoint: .bottom)))
            RoundedRectangle(cornerRadius: cornerRadius)
                .stroke(Color(Colors.lightShadow), lineWidth: 2)
                .blur(radius: 0.5)
                .offset(x: -1, y: -1.5)
                .mask(RoundedRectangle(cornerRadius: cornerRadius).fill(LinearGradient(colors: [Color.clear, Color(Colors.lightShadow)], startPoint: .top, endPoint: .bottom)))
        }
    }
}