SeekButtonBody8.swift

    @State private var rotation: Angle = .zero
    @State private var backgroundOpacity: Double = 0.0
    @State private var durationLabelOpacity: Double = 1.0
    @State private var xOffset: CGFloat = 0.0
    @State private var accumulationLabelOpacity: Double = 0.0
    @State private var numberOfAnimations: Int = 0
    @State private var accumulationString: String = ""
    
    var body: some View {
        ZStack {
            Group {
                RoundArrowBackground()
                    .fill()
                    .opacity(backgroundOpacity)
                RoundArrow()
                    .stroke(lineWidth: 3)
                RoundArrowHead()
                    .fill()
            }
            .rotationEffect(rotation)
            
            // Duration label
            ScalableText(string: "\(interval)")
                .opacity(durationLabelOpacity)
            
            ScalableText(string: accumulationString, fontWeight: .bold, xOffset: xOffset)
                .opacity(accumulationLabelOpacity)
        }
        .contentShape(Rectangle())
        .onTapGesture {
            if self.numberOfAnimations == 0 {
                self.accumulationString = "+\(self.interval)"
            } else {
                self.accumulationString = self.incrementSeekValue()
            }
            
            self.numberOfAnimations += 1
            
            self.animateArrowAndBackground()
            self.animateDurationLabel()
            self.animateAccumulationLabel()
            self.popAnimation()
            self.action(interval)
        }
    }