improve app ui for demo

Pocket Poster/Extensions/MaterialView.swift

@@ -0,0 +1,24 @@
+//
+//  MaterialView.swift
+//  Pocket Poster
+//
+//  Created by lemin on 5/31/25.
+//
+
+import SwiftUI
+
+struct MaterialView: UIViewRepresentable {
+    let material: UIBlurEffect.Style
+
+    init(_ material: UIBlurEffect.Style) {
+        self.material = material
+    }
+
+    func makeUIView(context: Context) -> UIVisualEffectView {
+        UIVisualEffectView(effect: UIBlurEffect(style: material))
+    }
+
+    func updateUIView(_ uiView: UIVisualEffectView, context: Context) {
+        uiView.effect = UIBlurEffect(style: material)
+    }
+}

Pocket Poster/Extensions/TintedButton.swift

@@ -0,0 +1,56 @@
+//
+//  TintedButton.swift
+//  Pocket Poster
+//
+//  Created by lemin on 5/31/25.
+//
+
+import SwiftUI
+
+struct TintedButton: ButtonStyle {
+    var color: Color
+    var material: UIBlurEffect.Style?
+    var fullwidth: Bool = false
+    
+    func makeBody(configuration: Configuration) -> some View {
+        ZStack {
+            if fullwidth {
+                configuration.label
+                    .padding(15)
+                    .frame(maxWidth: .infinity)
+                    .background(material == nil ? AnyView(color.opacity(0.2)) : AnyView(MaterialView(material!)))
+                    .cornerRadius(8)
+                    .foregroundColor(color)
+            } else {
+                configuration.label
+                    .padding(15)
+                    .background(material == nil ? AnyView(color.opacity(0.2)) : AnyView(MaterialView(material!)))
+                    .cornerRadius(8)
+                    .foregroundColor(color)
+            }
+        }
+    }
+    
+    init(color: Color = .blue, fullwidth: Bool = false) {
+        self.color = color
+        self.fullwidth = fullwidth
+    }
+    init(color: Color = .blue, material: UIBlurEffect.Style, fullwidth: Bool = false) {
+        self.color = color
+        self.material = material
+        self.fullwidth = fullwidth
+    }
+}
+
+
+#if DEBUG
+struct FullwidthTintedButton_Previews: PreviewProvider {
+    static var previews: some View {
+        Button("Exaple") {
+            
+        }
+        .buttonStyle(TintedButton(color: .red, fullwidth: true))
+        .padding()
+    }
+}
+#endif