import SwiftUI

/// Shown once `AppState.phase == .signedIn`. Each tab's root view is built
/// independently (see the Features/ subfolders) and referenced here only by
/// its type name — this file is the one integration point between them, so
/// none of the three needs to know the other two exist.
struct MainTabView: View {
    var body: some View {
        TabView {
            // Features/Scan/ScanTabView.swift
            ScanTabView()
                .tabItem { Label("Scannen", systemImage: "camera.viewfinder") }

            // Features/Receipts/ReceiptsListView.swift
            ReceiptsListView()
                .tabItem { Label("Belege", systemImage: "list.bullet.rectangle") }

            // Features/Settings/SettingsView.swift
            SettingsView()
                .tabItem { Label("Konto", systemImage: "person.crop.circle") }
        }
        .tint(.zenithBlack)
        // Solid white tab bar, no translucent system blur — the design
        // system rejects soft/blurred depth cues in favor of flat surfaces
        // with a hard 1px edge (the hairline the system automatically draws
        // at the top of an opaque tab bar stands in for that border here).
        .toolbarBackground(Color.zenithSurface, for: .tabBar)
        .toolbarBackground(.visible, for: .tabBar)
    }
}