SwiftUI Tactile Engineering: Physics, Gestures & Spatial Haptics

import SwiftUI

struct InteractiveElasticCard: View {
    @State private var offset: CGSize = .zero
    @State private var isDragging: Bool = false

    var body: some View {
        RoundedRectangle(cornerRadius: 24)
            .fill(LinearGradient(colors: [.indigo, .purple], startPoint: .topLeading, endPoint: .bottomTrailing))
            .frame(width: 300, height: 420)
            .shadow(color: .indigo.opacity(0.3), radius: 20, y: 10)
            .offset(offset)
            .scaleEffect(isDragging ? 1.03 : 1.0)
            .gesture(
                DragGesture()
                    .onChanged { value in
                        isDragging = true
                        offset = value.translation
                    }
                    .onEnded { value in
                        isDragging = false
                        withAnimation(.spring(response: 0.42, dampingRatio: 0.65, blendDuration: 0)) {
                            offset = .zero
                        }
                    }
            )
    }
}