import SwiftUI

private let dashboardAccent = Color(red: 0.12, green: 0.40, blue: 0.31)
private let dashboardGold = Color(red: 0.84, green: 0.71, blue: 0.48)
private let dashboardBorder = Color.black.opacity(0.06)
private let dashboardShadow = Color.black.opacity(0.05)

private enum DashboardSpacing {
    static let compactOuterPadding: CGFloat = 16
    static let regularOuterPadding: CGFloat = 28
    static let compactTopPadding: CGFloat = 10
    static let regularTopPadding: CGFloat = 18
    static let compactBottomPadding: CGFloat = 120
    static let regularBottomPadding: CGFloat = 56
    static let compactStackSpacing: CGFloat = 20
    static let regularStackSpacing: CGFloat = 28
    static let compactContentWidth: CGFloat = 720
    static let regularContentWidth: CGFloat = 980
    static let compactSectionPadding: CGFloat = 18
    static let regularSectionPadding: CGFloat = 24
    static let compactRadius: CGFloat = 24
    static let regularRadius: CGFloat = 28
}

private extension View {
    func dashboardSurface(radius: CGFloat, fillOpacity: Double = 0.88) -> some View {
        background(
            Color.white.opacity(fillOpacity),
            in: RoundedRectangle(cornerRadius: radius, style: .continuous)
        )
        .overlay(
            RoundedRectangle(cornerRadius: radius, style: .continuous)
                .stroke(dashboardBorder, lineWidth: 1)
        )
        .shadow(color: dashboardShadow, radius: 14, y: 6)
    }
}

struct HomeRootView: View {
    @ObservedObject var model: AppViewModel
    @Environment(\.horizontalSizeClass) private var horizontalSizeClass

    var body: some View {
        ZStack {
            DashboardBackdrop()

            Group {
                if usesCompactNavigation {
                    CompactHomeContainer(model: model)
                } else {
                    RegularHomeContainer(model: model)
                }
            }
        }
        .sheet(isPresented: $model.isNotificationCenterPresented) {
            NotificationCenterSheet(model: model)
        }
    }

    private var usesCompactNavigation: Bool {
        #if os(iOS)
        horizontalSizeClass == .compact
        #else
        false
        #endif
    }
}

private struct CompactHomeContainer: View {
    @ObservedObject var model: AppViewModel

    var body: some View {
        TabView(selection: $model.selectedSection) {
            compactTab(for: .overview)
            compactTab(for: .requests)
            compactTab(for: .activity)
            compactTab(for: .account)
        }
    }

    @ViewBuilder
    private func compactTab(for section: AppSection) -> some View {
        NavigationStack {
            HomeSectionScreen(model: model, section: section, compactLayout: true)
                .navigationTitle(section.title)
                .toolbar {
                    DashboardToolbar(model: model, compactLayout: true)
                }
        }
        .tag(section)
        .tabItem {
            Label(section.title, systemImage: section.systemImage)
        }
    }
}

private struct RegularHomeContainer: View {
    @ObservedObject var model: AppViewModel

    var body: some View {
        NavigationSplitView {
            Sidebar(model: model)
        } detail: {
            HomeSectionScreen(model: model, section: model.selectedSection, compactLayout: false)
                .navigationTitle(model.selectedSection.title)
                .toolbar {
                    DashboardToolbar(model: model, compactLayout: false)
                }
        }
        .navigationSplitViewStyle(.balanced)
    }
}

private struct DashboardToolbar: ToolbarContent {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool

    var body: some ToolbarContent {
        if compactLayout {
            ToolbarItemGroup(placement: .primaryAction) {
                NotificationBellButton(model: model)

                Menu {
                    Button {
                        Task {
                            await model.refreshDashboard()
                        }
                    } label: {
                        Label("Refresh", systemImage: "arrow.clockwise")
                    }

                    Button {
                        Task {
                            await model.simulateIncomingRequest()
                        }
                    } label: {
                        Label("Mock Request", systemImage: "sparkles.rectangle.stack.fill")
                    }

                    Button {
                        Task {
                            await model.sendTestNotification()
                        }
                    } label: {
                        Label("Send Test Alert", systemImage: "paperplane.fill")
                    }
                } label: {
                    Image(systemName: "ellipsis.circle")
                }
            }
        } else {
            ToolbarItemGroup(placement: .primaryAction) {
                NotificationBellButton(model: model)

                Button {
                    Task {
                        await model.refreshDashboard()
                    }
                } label: {
                    Label("Refresh", systemImage: "arrow.clockwise")
                }
                .disabled(model.isRefreshing)

                Button {
                    Task {
                        await model.simulateIncomingRequest()
                    }
                } label: {
                    Label("Mock Request", systemImage: "sparkles.rectangle.stack.fill")
                }

                Button {
                    Task {
                        await model.sendTestNotification()
                    }
                } label: {
                    Label("Test Alert", systemImage: "paperplane.fill")
                }
            }
        }
    }
}

private struct HomeSectionScreen: View {
    @ObservedObject var model: AppViewModel
    let section: AppSection
    let compactLayout: Bool

    @State private var focusedRequest: ApprovalRequest?

    var body: some View {
        ScrollView {
            VStack(alignment: .leading, spacing: compactLayout ? DashboardSpacing.compactStackSpacing : DashboardSpacing.regularStackSpacing) {
                if let banner = model.bannerMessage {
                    BannerCard(message: banner, compactLayout: compactLayout)
                }

                switch section {
                case .overview:
                    OverviewPanel(
                        model: model,
                        compactLayout: compactLayout,
                        onOpenRequest: { focusedRequest = $0 }
                    )
                case .requests:
                    RequestsPanel(
                        model: model,
                        compactLayout: compactLayout,
                        onOpenRequest: { focusedRequest = $0 }
                    )
                case .activity:
                    ActivityPanel(
                        model: model,
                        compactLayout: compactLayout,
                        onOpenRequest: { focusedRequest = $0 }
                    )
                case .account:
                    AccountPanel(model: model, compactLayout: compactLayout)
                }
            }
            .padding(.horizontal, compactLayout ? DashboardSpacing.compactOuterPadding : DashboardSpacing.regularOuterPadding)
            .padding(.top, compactLayout ? DashboardSpacing.compactTopPadding : DashboardSpacing.regularTopPadding)
            .padding(.bottom, compactLayout ? DashboardSpacing.compactBottomPadding : DashboardSpacing.regularBottomPadding)
            .frame(maxWidth: compactLayout ? DashboardSpacing.compactContentWidth : DashboardSpacing.regularContentWidth, alignment: .leading)
            .frame(maxWidth: .infinity, alignment: compactLayout ? .leading : .center)
        }
        .scrollIndicators(.hidden)
        .sheet(item: $focusedRequest) { request in
            RequestDetailSheet(request: request, model: model)
        }
    }
}

private struct Sidebar: View {
    @ObservedObject var model: AppViewModel

    var body: some View {
        List {
            Section {
                SidebarStatusCard(
                    profile: model.profile,
                    pendingCount: model.pendingRequests.count,
                    unreadCount: model.unreadNotificationCount
                )
            }

            Section("Workspace") {
                ForEach(AppSection.allCases) { section in
                    sidebarRow(for: section)
                }
            }
        }
        .navigationTitle("idp.global")
    }

    private func badgeCount(for section: AppSection) -> Int {
        switch section {
        case .overview:
            0
        case .requests:
            model.pendingRequests.count
        case .activity:
            0
        case .account:
            0
        }
    }

    @ViewBuilder
    private func sidebarRow(for section: AppSection) -> some View {
        Button {
            model.selectedSection = section
        } label: {
            HStack(spacing: 14) {
                Image(systemName: section.systemImage)
                    .font(.headline)
                    .frame(width: 30, height: 30)
                    .background {
                        if model.selectedSection == section {
                            Circle()
                                .fill(dashboardAccent.opacity(0.18))
                        } else {
                            Circle()
                                .fill(.thinMaterial)
                        }
                    }
                    .foregroundStyle(model.selectedSection == section ? dashboardAccent : .primary)

                Text(section.title)
                    .font(.headline)

                Spacer()

                if badgeCount(for: section) > 0 {
                    Text("\(badgeCount(for: section))")
                        .font(.caption.weight(.semibold))
                        .padding(.horizontal, 9)
                        .padding(.vertical, 5)
                        .background(.thinMaterial, in: Capsule())
                }
            }
            .padding(.vertical, 4)
            .contentShape(Rectangle())
        }
        .buttonStyle(.plain)
        .listRowBackground(
            model.selectedSection == section
                ? dashboardAccent.opacity(0.12)
                : Color.clear
        )
    }
}

private struct SidebarStatusCard: View {
    let profile: MemberProfile?
    let pendingCount: Int
    let unreadCount: Int

    var body: some View {
        VStack(alignment: .leading, spacing: 12) {
            Text("Digital Passport")
                .font(.title3.weight(.semibold))

            Text(profile?.handle ?? "Not paired yet")
                .foregroundStyle(.secondary)

            HStack(spacing: 10) {
                SmallMetricPill(title: "Pending", value: "\(pendingCount)")
                SmallMetricPill(title: "Unread", value: "\(unreadCount)")
            }
        }
        .padding(.vertical, 6)
    }
}

private struct OverviewPanel: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool
    let onOpenRequest: (ApprovalRequest) -> Void

    var body: some View {
        VStack(alignment: .leading, spacing: compactLayout ? 18 : 24) {
            if let profile = model.profile, let session = model.session {
                OverviewHero(
                    profile: profile,
                    session: session,
                    pendingCount: model.pendingRequests.count,
                    unreadCount: model.unreadNotificationCount,
                    compactLayout: compactLayout
                )
            }

            SectionCard(
                title: "Quick Actions",
                subtitle: "Refresh the bound session, seed a request, or test device alerts while the backend is still mocked.",
                compactLayout: compactLayout
            ) {
                QuickActionsDeck(model: model, compactLayout: compactLayout)
            }

            SectionCard(
                title: "Requests In Focus",
                subtitle: "Your passport is the identity surface. This queue is where anything asking for access should earn trust.",
                compactLayout: compactLayout
            ) {
                if model.pendingRequests.isEmpty {
                    EmptyStateCopy(
                        title: "Nothing waiting",
                        systemImage: "checkmark.shield.fill",
                        message: "Every pending approval has been handled."
                    )
                } else {
                    VStack(spacing: 16) {
                        if let featured = model.pendingRequests.first {
                            FeaturedRequestCard(
                                request: featured,
                                compactLayout: compactLayout,
                                onOpenRequest: { onOpenRequest(featured) }
                            )
                        }

                        ForEach(model.pendingRequests.dropFirst().prefix(2)) { request in
                            RequestCard(
                                request: request,
                                compactLayout: compactLayout,
                                isBusy: model.activeRequestID == request.id,
                                onApprove: {
                                    Task { await model.approve(request) }
                                },
                                onReject: {
                                    Task { await model.reject(request) }
                                },
                                onOpenRequest: {
                                    onOpenRequest(request)
                                }
                            )
                        }
                    }
                }
            }

            SectionCard(
                title: "Recent Activity",
                subtitle: "Keep the full timeline in its own view, and use the bell above for alerts that need device-level attention.",
                compactLayout: compactLayout
            ) {
                ActivityPreviewCard(model: model, compactLayout: compactLayout)
            }
        }
    }
}

private struct ActivityPanel: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool
    let onOpenRequest: (ApprovalRequest) -> Void

    @State private var selectedNotificationID: AppNotification.ID?

    private var notificationIDs: [AppNotification.ID] {
        model.notifications.map(\.id)
    }

    private var selectedNotification: AppNotification? {
        if let selectedNotificationID,
           let match = model.notifications.first(where: { $0.id == selectedNotificationID }) {
            return match
        }

        return model.notifications.first
    }

    var body: some View {
        VStack(alignment: .leading, spacing: compactLayout ? 18 : 24) {
            if compactLayout {
                SectionCard(
                    title: "Recent Activity",
                    subtitle: "A dedicated home for approvals, pairing events, and system changes after they happen."
                ) {
                    VStack(spacing: 16) {
                        activityMetricRow

                        if model.notifications.isEmpty {
                            EmptyStateCopy(
                                title: "No activity yet",
                                systemImage: "clock.badge.xmark",
                                message: "Once requests and pairing events arrive, the timeline will fill in here."
                            )
                        } else {
                            ForEach(model.notifications) { notification in
                                NotificationCard(
                                    notification: notification,
                                    compactLayout: compactLayout,
                                    onMarkRead: {
                                        Task { await model.markNotificationRead(notification) }
                                    }
                                )
                            }
                        }
                    }
                }
            } else {
                SectionCard(
                    title: "Activity Timeline",
                    subtitle: "Review what already happened across approvals, pairing, and system state without mixing it into the notification surface."
                ) {
                    VStack(alignment: .leading, spacing: 18) {
                        activityMetricRow

                        if model.notifications.isEmpty {
                            EmptyStateCopy(
                                title: "No activity yet",
                                systemImage: "clock.badge.xmark",
                                message: "Once requests and pairing events arrive, the timeline will fill in here."
                            )
                        } else {
                            HStack(alignment: .top, spacing: 18) {
                                VStack(alignment: .leading, spacing: 14) {
                                    Text("Timeline")
                                        .font(.headline)

                                    Text("The latest product and security events stay readable here, while the bell above stays focused on device notifications.")
                                        .foregroundStyle(.secondary)

                                    VStack(spacing: 12) {
                                        ForEach(model.notifications) { notification in
                                            NotificationFeedRow(
                                                notification: notification,
                                                isSelected: notification.id == selectedNotification?.id
                                            ) {
                                                selectedNotificationID = notification.id
                                            }
                                        }
                                    }
                                }
                                .frame(width: 390, alignment: .leading)
                                .padding(18)
                                .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 28, style: .continuous))

                                if let notification = selectedNotification {
                                    NotificationWorkbenchDetail(
                                        notification: notification,
                                        permissionState: model.notificationPermission,
                                        onMarkRead: {
                                            Task { await model.markNotificationRead(notification) }
                                        }
                                    )
                                }
                            }
                        }
                    }
                }
            }

            if !model.handledRequests.isEmpty {
                SectionCard(
                    title: "Handled Requests",
                    subtitle: "A compact audit trail for the approvals and rejections that already moved through the queue."
                ) {
                    LazyVStack(spacing: 14) {
                        ForEach(model.handledRequests.prefix(compactLayout ? 4 : 6)) { request in
                            RequestCard(
                                request: request,
                                compactLayout: compactLayout,
                                isBusy: false,
                                onApprove: nil,
                                onReject: nil,
                                onOpenRequest: {
                                    onOpenRequest(request)
                                }
                            )
                        }
                    }
                }
            }
        }
        .onChange(of: notificationIDs, initial: true) { _, _ in
            syncSelectedNotification()
        }
    }

    @ViewBuilder
    private var activityMetricRow: some View {
        if compactLayout {
            VStack(spacing: 10) {
                SmallMetricPill(title: "Events", value: "\(model.notifications.count)")
                SmallMetricPill(title: "Unread", value: "\(model.unreadNotificationCount)")
                SmallMetricPill(title: "Handled", value: "\(model.handledRequests.count)")
            }
        } else {
            HStack(spacing: 14) {
                NotificationMetricCard(
                    title: "Events",
                    value: "\(model.notifications.count)",
                    subtitle: model.notifications.isEmpty ? "Quiet so far" : "Timeline active",
                    accent: dashboardAccent
                )
                NotificationMetricCard(
                    title: "Unread",
                    value: "\(model.unreadNotificationCount)",
                    subtitle: model.unreadNotificationCount == 0 ? "Everything acknowledged" : "Still highlighted",
                    accent: .orange
                )
                NotificationMetricCard(
                    title: "Handled",
                    value: "\(model.handledRequests.count)",
                    subtitle: model.handledRequests.isEmpty ? "No completed approvals yet" : "Recent decisions ready to review",
                    accent: dashboardGold
                )
            }
        }
    }

    private func syncSelectedNotification() {
        if let selectedNotificationID,
           notificationIDs.contains(selectedNotificationID) {
            return
        }

        selectedNotificationID = model.notifications.first?.id
    }
}

private struct RequestsPanel: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool
    let onOpenRequest: (ApprovalRequest) -> Void

    @State private var selectedRequestID: ApprovalRequest.ID?

    private var requestIDs: [ApprovalRequest.ID] {
        model.requests.map(\.id)
    }

    private var selectedRequest: ApprovalRequest? {
        if let selectedRequestID,
           let match = model.requests.first(where: { $0.id == selectedRequestID }) {
            return match
        }

        return model.pendingRequests.first ?? model.handledRequests.first
    }

    var body: some View {
        VStack(alignment: .leading, spacing: compactLayout ? 18 : 24) {
            if compactLayout {
                SectionCard(
                    title: "Approval Desk",
                    subtitle: "Treat every request like a border checkpoint: verify the origin, timing, and scope before letting it through.",
                    compactLayout: compactLayout
                ) {
                    VStack(spacing: 16) {
                        RequestQueueSummary(
                            pendingCount: model.pendingRequests.count,
                            elevatedCount: model.elevatedPendingCount,
                            compactLayout: compactLayout
                        )

                        if model.pendingRequests.isEmpty {
                            EmptyStateCopy(
                                title: "Queue is clear",
                                systemImage: "checkmark.circle",
                                message: "Use the toolbar to simulate another request if you want to keep testing."
                            )
                        } else {
                            ForEach(model.pendingRequests) { request in
                                RequestCard(
                                    request: request,
                                    compactLayout: compactLayout,
                                    isBusy: model.activeRequestID == request.id,
                                    onApprove: {
                                        Task { await model.approve(request) }
                                    },
                                    onReject: {
                                        Task { await model.reject(request) }
                                    },
                                    onOpenRequest: {
                                        onOpenRequest(request)
                                    }
                                )
                            }
                        }
                    }
                }

                SectionCard(
                    title: "Decision Guide",
                    subtitle: "What to check before approving high-sensitivity actions from your phone.",
                    compactLayout: compactLayout
                ) {
                    VStack(alignment: .leading, spacing: 14) {
                        GuidanceRow(
                            icon: "network.badge.shield.half.filled",
                            title: "Confirm the origin",
                            message: "The service hostname should match the product or automation you intentionally triggered."
                        )
                        GuidanceRow(
                            icon: "timer",
                            title: "Look for short lifetimes",
                            message: "Privileged grants should usually be limited in time instead of creating long-lived access."
                        )
                        GuidanceRow(
                            icon: "lock.shield",
                            title: "Escalate mentally for elevated scopes",
                            message: "Signing, publishing, and write scopes deserve a slower second look before approval."
                        )
                    }
                }

                if !model.handledRequests.isEmpty {
                    SectionCard(
                        title: "Recently Handled",
                        subtitle: "A compact audit trail of the latest approvals and rejections.",
                        compactLayout: compactLayout
                    ) {
                        LazyVStack(spacing: 14) {
                            ForEach(model.handledRequests.prefix(4)) { request in
                                RequestCard(
                                    request: request,
                                    compactLayout: compactLayout,
                                    isBusy: false,
                                    onApprove: nil,
                                    onReject: nil,
                                    onOpenRequest: {
                                        onOpenRequest(request)
                                    }
                                )
                            }
                        }
                    }
                }
            } else {
                SectionCard(
                    title: "Approval Workbench",
                    subtitle: "Use the queue on the left and a richer inline review on the right so each decision feels deliberate instead of mechanical."
                ) {
                    VStack(alignment: .leading, spacing: 18) {
                        RequestQueueSummary(
                            pendingCount: model.pendingRequests.count,
                            elevatedCount: model.elevatedPendingCount,
                            compactLayout: compactLayout
                        )

                        if model.requests.isEmpty {
                            EmptyStateCopy(
                                title: "Queue is clear",
                                systemImage: "checkmark.circle",
                                message: "Use the toolbar to simulate another request if you want to keep testing."
                            )
                        } else {
                            HStack(alignment: .top, spacing: 18) {
                                VStack(alignment: .leading, spacing: 14) {
                                    Text("Queue")
                                        .font(.headline)

                                    Text("Pending and recently handled items stay visible here so you can sanity-check decisions without leaving the flow.")
                                        .foregroundStyle(.secondary)

                                    VStack(spacing: 12) {
                                        ForEach(model.requests) { request in
                                            RequestQueueRow(
                                                request: request,
                                                isSelected: request.id == selectedRequest?.id
                                            ) {
                                                selectedRequestID = request.id
                                            }
                                        }
                                    }
                                }
                                .frame(width: 390, alignment: .leading)
                                .padding(18)
                                .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 28, style: .continuous))

                                if let request = selectedRequest {
                                    RequestWorkbenchDetail(
                                        request: request,
                                        isBusy: model.activeRequestID == request.id,
                                        onApprove: request.status == .pending ? {
                                            Task { await model.approve(request) }
                                        } : nil,
                                        onReject: request.status == .pending ? {
                                            Task { await model.reject(request) }
                                        } : nil,
                                        onOpenRequest: {
                                            onOpenRequest(request)
                                        }
                                    )
                                }
                            }
                        }
                    }
                }

                SectionCard(
                    title: "Operator Checklist",
                    subtitle: "A calm review pattern for larger screens, especially when elevated scopes show up."
                ) {
                    LazyVGrid(
                        columns: [
                            GridItem(.flexible(), spacing: 14),
                            GridItem(.flexible(), spacing: 14)
                        ],
                        alignment: .leading,
                        spacing: 14
                    ) {
                        GuidanceCard(
                            icon: "network.badge.shield.half.filled",
                            title: "Confirm the origin",
                            message: "The hostname should map to the workflow or portal you intentionally triggered."
                        )
                        GuidanceCard(
                            icon: "timer",
                            title: "Look for short lifetimes",
                            message: "Elevated grants are safer when they expire quickly instead of becoming ambient access."
                        )
                        GuidanceCard(
                            icon: "lock.shield",
                            title: "Escalate for signing and publish scopes",
                            message: "If the action can sign, publish, or write, slow down and verify the target system twice."
                        )
                        GuidanceCard(
                            icon: "person.badge.shield.checkmark",
                            title: "Match the device",
                            message: "The request story should line up with the paired browser, CLI, or automation session you expect."
                        )
                    }
                }
            }
        }
        .onChange(of: requestIDs, initial: true) { _, _ in
            syncSelectedRequest()
        }
    }

    private func syncSelectedRequest() {
        if let selectedRequestID,
           requestIDs.contains(selectedRequestID) {
            return
        }

        selectedRequestID = model.pendingRequests.first?.id ?? model.handledRequests.first?.id
    }
}

private struct NotificationsPanel: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool

    @State private var selectedNotificationID: AppNotification.ID?

    private var notificationIDs: [AppNotification.ID] {
        model.notifications.map(\.id)
    }

    private var selectedNotification: AppNotification? {
        if let selectedNotificationID,
           let match = model.notifications.first(where: { $0.id == selectedNotificationID }) {
            return match
        }

        return model.notifications.first
    }

    var body: some View {
        VStack(alignment: .leading, spacing: compactLayout ? 18 : 24) {
            if compactLayout {
                SectionCard(
                    title: "Notification Delivery",
                    subtitle: "Control lock-screen delivery now, then evolve this into remote push once the backend is live.",
                    compactLayout: compactLayout
                ) {
                    NotificationPermissionCard(model: model, compactLayout: compactLayout)
                }

                SectionCard(
                    title: "Alert Inbox",
                    subtitle: "Unread alerts stay emphasized here until you explicitly clear them.",
                    compactLayout: compactLayout
                ) {
                    if model.notifications.isEmpty {
                        EmptyStateCopy(
                            title: "No alerts yet",
                            systemImage: "bell.slash",
                            message: "New pairing and approval alerts will accumulate here."
                        )
                    } else {
                        LazyVStack(spacing: 14) {
                            ForEach(model.notifications) { notification in
                                NotificationCard(
                                    notification: notification,
                                    compactLayout: compactLayout,
                                    onMarkRead: {
                                        Task { await model.markNotificationRead(notification) }
                                    }
                                )
                            }
                        }
                    }
                }
            } else {
                SectionCard(
                    title: "Delivery Posture",
                    subtitle: "Keep delivery health, unread pressure, and the latest alert in one glance from the notification center."
                ) {
                    VStack(alignment: .leading, spacing: 18) {
                        HStack(spacing: 14) {
                            NotificationMetricCard(
                                title: "Unread",
                                value: "\(model.unreadNotificationCount)",
                                subtitle: model.unreadNotificationCount == 0 ? "Inbox clear" : "Needs triage",
                                accent: .orange
                            )
                            NotificationMetricCard(
                                title: "Permission",
                                value: model.notificationPermission.title,
                                subtitle: model.notificationPermission == .allowed ? "Lock screen ready" : "Review device status",
                                accent: dashboardAccent
                            )
                            NotificationMetricCard(
                                title: "Latest",
                                value: model.latestNotification?.kind.title ?? "Quiet",
                                subtitle: model.latestNotification?.sentAt.formatted(date: .omitted, time: .shortened) ?? "No recent events",
                                accent: dashboardGold
                            )
                        }

                        NotificationPermissionCard(model: model, compactLayout: compactLayout)
                    }
                }

                SectionCard(
                    title: "Alert Inbox",
                    subtitle: "Select an alert to inspect the message body, delivery state, and the right follow-up action."
                ) {
                    if model.notifications.isEmpty {
                        EmptyStateCopy(
                            title: "No alerts yet",
                            systemImage: "bell.slash",
                            message: "New pairing and approval alerts will accumulate here."
                        )
                    } else {
                        HStack(alignment: .top, spacing: 18) {
                            VStack(alignment: .leading, spacing: 14) {
                                Text("Feed")
                                    .font(.headline)

                                Text("Unread items stay visually lifted until you clear them, which makes it easier to scan the important changes first.")
                                    .foregroundStyle(.secondary)

                                VStack(spacing: 12) {
                                    ForEach(model.notifications) { notification in
                                        NotificationFeedRow(
                                            notification: notification,
                                            isSelected: notification.id == selectedNotification?.id
                                        ) {
                                            selectedNotificationID = notification.id
                                        }
                                    }
                                }
                            }
                            .frame(maxWidth: 340, alignment: .leading)
                            .padding(18)
                            .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 28, style: .continuous))

                            if let notification = selectedNotification {
                                NotificationWorkbenchDetail(
                                    notification: notification,
                                    permissionState: model.notificationPermission,
                                    onMarkRead: {
                                        Task { await model.markNotificationRead(notification) }
                                    }
                                )
                            }
                        }
                    }
                }
            }
        }
        .onChange(of: notificationIDs, initial: true) { _, _ in
            syncSelectedNotification()
        }
    }

    private func syncSelectedNotification() {
        if let selectedNotificationID,
           notificationIDs.contains(selectedNotificationID) {
            return
        }

        selectedNotificationID = model.notifications.first?.id
    }
}

private struct AccountPanel: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool

    var body: some View {
        VStack(alignment: .leading, spacing: compactLayout ? 18 : 24) {
            if let profile = model.profile, let session = model.session {
                AccountHero(profile: profile, session: session, compactLayout: compactLayout)

                SectionCard(
                    title: "Session Security",
                    subtitle: "The core trust facts for the currently paired session.",
                    compactLayout: compactLayout
                ) {
                    AccountFactGrid(profile: profile, session: session, compactLayout: compactLayout)
                }
            }

            SectionCard(
                title: "Mock Pairing Payload",
                subtitle: "Useful for testing QR flow while the real portal integration is still pending.",
                compactLayout: compactLayout
            ) {
                Text(model.suggestedQRCodePayload)
                    .font(.body.monospaced())
                    .textSelection(.enabled)
                    .padding(16)
                    .frame(maxWidth: .infinity, alignment: .leading)
                    .background(.thinMaterial, in: RoundedRectangle(cornerRadius: 24, style: .continuous))
            }

            SectionCard(
                title: "Session Controls",
                subtitle: "Use this once you want to reset back to the login and pairing flow.",
                compactLayout: compactLayout
            ) {
                Button(role: .destructive) {
                    model.signOut()
                } label: {
                    Label("Sign Out", systemImage: "rectangle.portrait.and.arrow.right")
                }
                .buttonStyle(.bordered)
            }
        }
    }
}

private struct OverviewHero: View {
    let profile: MemberProfile
    let session: AuthSession
    let pendingCount: Int
    let unreadCount: Int
    let compactLayout: Bool

    var body: some View {
        ZStack(alignment: .topLeading) {
            RoundedRectangle(cornerRadius: 34, style: .continuous)
                .fill(
                    LinearGradient(
                        colors: [
                            Color(red: 0.07, green: 0.18, blue: 0.15),
                            Color(red: 0.11, green: 0.28, blue: 0.24),
                            Color(red: 0.29, green: 0.24, blue: 0.12)
                        ],
                        startPoint: .topLeading,
                        endPoint: .bottomTrailing
                    )
                )
                .overlay(
                    RoundedRectangle(cornerRadius: 34, style: .continuous)
                        .strokeBorder(dashboardGold.opacity(0.55), lineWidth: 1.2)
                )

            Circle()
                .fill(.white.opacity(0.08))
                .frame(width: compactLayout ? 180 : 260, height: compactLayout ? 180 : 260)
                .offset(x: compactLayout ? 210 : 420, y: compactLayout ? -30 : -50)

            Image(systemName: "globe.europe.africa.fill")
                .font(.system(size: compactLayout ? 92 : 122))
                .foregroundStyle(.white.opacity(0.07))
                .offset(x: compactLayout ? 220 : 455, y: compactLayout ? 4 : 8)

            VStack(alignment: .leading, spacing: compactLayout ? 16 : 20) {
                passportHeader

                passportBody

                if !compactLayout {
                    PassportMachineStrip(code: machineReadableCode)
                }

                passportMetrics
            }
            .padding(compactLayout ? 22 : 28)
        }
        .frame(minHeight: compactLayout ? 380 : 390)
    }

    private var passportHeader: some View {
        HStack(alignment: .top, spacing: 16) {
            VStack(alignment: .leading, spacing: 8) {
                Text("IDP.GLOBAL DIGITAL PASSPORT")
                    .font(.caption.weight(.bold))
                    .tracking(1.8)
                    .foregroundStyle(.white.opacity(0.78))

                Text(profile.name)
                    .font(.system(size: compactLayout ? 30 : 36, weight: .bold, design: .rounded))
                    .foregroundStyle(.white)

                Text("Bound to \(session.deviceName) for requests coming from \(session.originHost).")
                    .font(compactLayout ? .subheadline : .title3)
                    .foregroundStyle(.white.opacity(0.88))
            }

            Spacer(minLength: 0)

            PassportDocumentBadge(
                number: documentNumber,
                issuedAt: session.pairedAt,
                compactLayout: compactLayout
            )
        }
    }

    @ViewBuilder
    private var passportBody: some View {
        if compactLayout {
            VStack(alignment: .leading, spacing: 14) {
                HStack(alignment: .top, spacing: 14) {
                    passportPortrait

                    VStack(alignment: .leading, spacing: 10) {
                        PassportField(label: "Holder", value: profile.name, emphasized: true)
                        PassportField(label: "Handle", value: profile.handle, monospaced: true)
                        PassportField(label: "Origin", value: session.originHost, monospaced: true)
                    }
                }

                LazyVGrid(
                    columns: [
                        GridItem(.flexible(), spacing: 10),
                        GridItem(.flexible(), spacing: 10)
                    ],
                    spacing: 10
                ) {
                    PassportInlineFact(label: "Device", value: session.deviceName)
                    PassportInlineFact(label: "Issued", value: session.pairedAt.formatted(date: .abbreviated, time: .shortened))
                    PassportInlineFact(label: "Organization", value: profile.organization)
                    PassportInlineFact(label: "Token", value: "...\(session.tokenPreview)", monospaced: true)
                }
            }
            .padding(18)
            .background(.white.opacity(0.11), in: RoundedRectangle(cornerRadius: 28, style: .continuous))
        } else {
            VStack(alignment: .leading, spacing: 16) {
                HStack(alignment: .top, spacing: 18) {
                    passportPortrait

                    HStack(alignment: .top, spacing: 14) {
                        passportPrimaryFields
                        passportSecondaryFields
                    }
                }

                LazyVGrid(
                    columns: [
                        GridItem(.flexible(), spacing: 12),
                        GridItem(.flexible(), spacing: 12),
                        GridItem(.flexible(), spacing: 12)
                    ],
                    spacing: 12
                ) {
                    PassportInlineFact(label: "Document No.", value: documentNumber, monospaced: true)
                    PassportInlineFact(label: "Issued", value: session.pairedAt.formatted(date: .abbreviated, time: .shortened))
                    PassportInlineFact(label: "Membership", value: "\(profile.deviceCount) trusted devices")
                }
            }
            .padding(20)
            .background(.white.opacity(0.11), in: RoundedRectangle(cornerRadius: 28, style: .continuous))
        }
    }

    private var passportMetrics: some View {
        Group {
            if compactLayout {
                VStack(spacing: 10) {
                    passportMetricCards
                }
            } else {
                HStack(spacing: 12) {
                    passportMetricCards
                }
            }
        }
    }

    @ViewBuilder
    private var passportMetricCards: some View {
        PassportMetricBadge(
            title: "Pending",
            value: "\(pendingCount)",
            subtitle: pendingCount == 0 ? "No approvals waiting" : "Requests still at the border"
        )
        PassportMetricBadge(
            title: "Alerts",
            value: "\(unreadCount)",
            subtitle: unreadCount == 0 ? "Notification bell is clear" : "Unread device alerts"
        )
        PassportMetricBadge(
            title: "Devices",
            value: "\(profile.deviceCount)",
            subtitle: "\(profile.organization) membership"
        )
    }

    private var passportPortrait: some View {
        VStack(alignment: .leading, spacing: 12) {
            RoundedRectangle(cornerRadius: 26, style: .continuous)
                .fill(.white.opacity(0.12))
                .frame(width: compactLayout ? 102 : 132, height: compactLayout ? 132 : 166)
                .overlay {
                    VStack(spacing: 10) {
                        Circle()
                            .fill(.white.opacity(0.18))
                            .frame(width: compactLayout ? 52 : 64, height: compactLayout ? 52 : 64)
                            .overlay {
                                Text(holderInitials)
                                    .font(.system(size: compactLayout ? 24 : 28, weight: .bold, design: .rounded))
                                    .foregroundStyle(.white)
                            }

                        Text("TRUSTED HOLDER")
                            .font(.caption2.weight(.bold))
                            .tracking(1.2)
                            .foregroundStyle(.white.opacity(0.72))

                        Text(compactLayout ? documentNumber : profile.handle)
                            .font(.footnote.monospaced())
                            .foregroundStyle(.white.opacity(0.9))
                            .lineLimit(2)
                            .minimumScaleFactor(0.7)
                    }
                    .padding(12)
                }

            Text("Issued \(session.pairedAt.formatted(date: .abbreviated, time: .shortened))")
                .font(.caption)
                .foregroundStyle(.white.opacity(0.74))
        }
    }

    private var passportPrimaryFields: some View {
        VStack(alignment: .leading, spacing: 12) {
            PassportField(label: "Holder", value: profile.name, emphasized: true)
            PassportField(label: "Handle", value: profile.handle, monospaced: true)
            PassportField(label: "Organization", value: profile.organization)
        }
    }

    private var passportSecondaryFields: some View {
        VStack(alignment: .leading, spacing: 12) {
            PassportField(label: "Bound Device", value: session.deviceName)
            PassportField(label: "Origin", value: session.originHost, monospaced: true)
            PassportField(label: "Token Preview", value: "...\(session.tokenPreview)", monospaced: true)
        }
    }

    private var holderInitials: String {
        let parts = profile.name
            .split(separator: " ")
            .prefix(2)
            .compactMap { $0.first }

        let initials = String(parts)
        return initials.isEmpty ? "ID" : initials.uppercased()
    }

    private var documentNumber: String {
        "IDP-\(session.id.uuidString.prefix(8).uppercased())"
    }

    private var machineReadableCode: String {
        let normalizedName = sanitize(profile.name)
        let normalizedHandle = sanitize(profile.handle)
        let normalizedOrigin = sanitize(session.originHost)
        return "P<\(documentNumber)<\(normalizedName)<<\(normalizedHandle)<<\(normalizedOrigin)"
    }

    private func sanitize(_ value: String) -> String {
        value
            .uppercased()
            .map { character in
                character.isLetter || character.isNumber ? String(character) : "<"
            }
            .joined()
    }
}

private struct PassportDocumentBadge: View {
    let number: String
    let issuedAt: Date
    let compactLayout: Bool

    var body: some View {
        VStack(alignment: .trailing, spacing: 8) {
            StatusBadge(title: "Bound", tone: .white)

            VStack(alignment: .trailing, spacing: 4) {
                Text("Document No.")
                    .font(.caption2.weight(.bold))
                    .tracking(1.0)
                    .foregroundStyle(.white.opacity(0.72))

                Text(number)
                    .font((compactLayout ? Font.footnote : Font.body).monospaced().weight(.semibold))
                    .foregroundStyle(.white)
            }

            if !compactLayout {
                Text("Issued \(issuedAt.formatted(date: .abbreviated, time: .shortened))")
                    .font(.caption)
                    .foregroundStyle(.white.opacity(0.76))
            }
        }
        .padding(.horizontal, compactLayout ? 12 : 14)
        .padding(.vertical, 10)
        .background(.white.opacity(0.10), in: RoundedRectangle(cornerRadius: 22, style: .continuous))
    }
}

private struct PassportInlineFact: View {
    let label: String
    let value: String
    var monospaced: Bool = false

    var body: some View {
        VStack(alignment: .leading, spacing: 5) {
            Text(label.uppercased())
                .font(.caption2.weight(.bold))
                .tracking(1.0)
                .foregroundStyle(.white.opacity(0.72))

            Text(value)
                .font(monospaced ? .subheadline.monospaced() : .subheadline.weight(.semibold))
                .foregroundStyle(.white)
                .lineLimit(2)
                .minimumScaleFactor(0.7)
        }
        .padding(12)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(.white.opacity(0.09), in: RoundedRectangle(cornerRadius: 18, style: .continuous))
    }
}

private struct PassportField: View {
    let label: String
    let value: String
    var monospaced: Bool = false
    var emphasized: Bool = false

    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(label.uppercased())
                .font(.caption2.weight(.bold))
                .tracking(1.0)
                .foregroundStyle(.white.opacity(0.72))

            Text(value)
                .font(valueFont)
                .foregroundStyle(.white)
                .lineLimit(2)
                .minimumScaleFactor(0.8)
        }
        .frame(maxWidth: .infinity, alignment: .leading)
    }

    private var valueFont: Font {
        if monospaced {
            return .body.monospaced()
        }

        return emphasized ? .headline : .body
    }
}

private struct PassportMetricBadge: View {
    let title: String
    let value: String
    let subtitle: String

    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            Text(title.uppercased())
                .font(.caption.weight(.bold))
                .tracking(1.0)
                .foregroundStyle(.white.opacity(0.72))

            Text(value)
                .font(.title2.weight(.bold))
                .foregroundStyle(.white)

            Text(subtitle)
                .font(.footnote)
                .foregroundStyle(.white.opacity(0.82))
        }
        .padding(16)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(.white.opacity(0.10), in: RoundedRectangle(cornerRadius: 22, style: .continuous))
    }
}

private struct PassportMachineStrip: View {
    let code: String

    var body: some View {
        Text(code)
            .font(.caption.monospaced().weight(.semibold))
            .lineLimit(1)
            .minimumScaleFactor(0.5)
            .padding(.horizontal, 14)
            .padding(.vertical, 12)
            .frame(maxWidth: .infinity, alignment: .leading)
            .background(Color.black.opacity(0.22), in: RoundedRectangle(cornerRadius: 18, style: .continuous))
            .foregroundStyle(.white.opacity(0.94))
    }
}

private struct QuickActionsDeck: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool

    var body: some View {
        Group {
            if compactLayout {
                VStack(spacing: 12) {
                    actionButtons
                }
            } else {
                HStack(alignment: .top, spacing: 14) {
                    actionButtons
                }
            }
        }
    }

    @ViewBuilder
    private var actionButtons: some View {
        ActionTile(
            title: "Refresh State",
            subtitle: "Pull the latest requests and notifications from the mock service.",
            systemImage: "arrow.clockwise"
        ) {
            Task {
                await model.refreshDashboard()
            }
        }

        ActionTile(
            title: "Seed Request",
            subtitle: "Inject a new elevated approval flow to test the queue.",
            systemImage: "sparkles.rectangle.stack.fill"
        ) {
            Task {
                await model.simulateIncomingRequest()
            }
        }

        ActionTile(
            title: "Test Alert",
            subtitle: "Schedule a local notification so the phone behavior is easy to verify.",
            systemImage: "bell.badge.fill"
        ) {
            Task {
                await model.sendTestNotification()
            }
        }
    }
}

private struct ActionTile: View {
    let title: String
    let subtitle: String
    let systemImage: String
    let action: () -> Void

    var body: some View {
        Button(action: action) {
            VStack(alignment: .leading, spacing: 12) {
                Image(systemName: systemImage)
                    .font(.title3.weight(.semibold))
                    .foregroundStyle(dashboardAccent)
                    .frame(width: 42, height: 42)
                    .background(dashboardAccent.opacity(0.10), in: RoundedRectangle(cornerRadius: 14, style: .continuous))
                Text(title)
                    .font(.headline)
                    .foregroundStyle(.primary)
                Text(subtitle)
                    .font(.subheadline)
                    .foregroundStyle(.secondary)
            }
            .frame(maxWidth: .infinity, alignment: .leading)
            .padding(18)
            .background(Color.white.opacity(0.76), in: RoundedRectangle(cornerRadius: 24, style: .continuous))
            .overlay(
                RoundedRectangle(cornerRadius: 24, style: .continuous)
                    .stroke(dashboardAccent.opacity(0.08), lineWidth: 1)
            )
        }
        .buttonStyle(.plain)
    }
}

private struct FeaturedRequestCard: View {
    let request: ApprovalRequest
    let compactLayout: Bool
    let onOpenRequest: () -> Void

    var body: some View {
        VStack(alignment: .leading, spacing: 16) {
            HStack(alignment: .center, spacing: 12) {
                Image(systemName: request.risk == .elevated ? "shield.lefthalf.filled.badge.checkmark" : request.kind.systemImage)
                    .font(.title2)
                    .foregroundStyle(request.risk == .elevated ? .orange : dashboardAccent)

                VStack(alignment: .leading, spacing: 4) {
                    Text(request.trustHeadline)
                        .font(.headline)
                    Text(request.title)
                        .font(.title3.weight(.semibold))
                }

                Spacer()

                StatusBadge(
                    title: request.risk.title,
                    tone: request.risk == .routine ? .mint : .orange
                )
            }

            Text(request.trustDetail)
                .foregroundStyle(.secondary)

            HStack(spacing: 8) {
                StatusBadge(title: request.kind.title, tone: .blue)
                StatusBadge(title: request.source, tone: .gray)
                StatusBadge(title: request.scopeSummary, tone: .green)
            }

            if compactLayout {
                VStack(alignment: .leading, spacing: 12) {
                    Button("Review Full Context", action: onOpenRequest)
                        .buttonStyle(.borderedProminent)
                    Text(request.risk.guidance)
                        .font(.footnote)
                        .foregroundStyle(.secondary)
                }
            } else {
                HStack {
                    Button("Review Full Context", action: onOpenRequest)
                        .buttonStyle(.borderedProminent)
                    Spacer()
                    Text(request.risk.guidance)
                        .font(.footnote)
                        .foregroundStyle(.secondary)
                        .multilineTextAlignment(.trailing)
                }
            }
        }
        .padding(compactLayout ? 18 : 22)
        .background(
            LinearGradient(
                colors: [
                    request.risk == .routine ? dashboardAccent.opacity(0.12) : Color.orange.opacity(0.16),
                    Color.white.opacity(0.7)
                ],
                startPoint: .topLeading,
                endPoint: .bottomTrailing
            ),
            in: RoundedRectangle(cornerRadius: 28, style: .continuous)
        )
    }
}

private struct RequestQueueSummary: View {
    let pendingCount: Int
    let elevatedCount: Int
    let compactLayout: Bool

    var body: some View {
        if compactLayout {
            VStack(spacing: 12) {
                HStack(spacing: 12) {
                    pendingCard
                    elevatedCard
                }

                postureCard
            }
        } else {
            HStack(spacing: 12) {
                pendingCard
                elevatedCard
                postureCard
            }
        }
    }

    private var pendingCard: some View {
        RequestSummaryMetricCard(
            title: "Pending",
            value: "\(pendingCount)",
            subtitle: pendingCount == 0 ? "Queue is clear" : "Still waiting on your call",
            accent: dashboardAccent
        )
    }

    private var elevatedCard: some View {
        RequestSummaryMetricCard(
            title: "Elevated",
            value: "\(elevatedCount)",
            subtitle: elevatedCount == 0 ? "No privileged scopes" : "Needs slower review",
            accent: .orange
        )
    }

    private var postureCard: some View {
        RequestSummaryMetricCard(
            title: "Posture",
            value: trustMode,
            subtitle: postureSummary,
            accent: dashboardGold
        )
    }

    private var trustMode: String {
        if pendingCount == 0 {
            return "Clear"
        }

        if elevatedCount == 0 {
            return "Active"
        }

        return elevatedCount > 1 ? "Escalate" : "Guarded"
    }

    private var postureSummary: String {
        if pendingCount == 0 {
            return "Nothing at the border"
        }

        if elevatedCount == 0 {
            return "Routine traffic only"
        }

        return "Privileged access in queue"
    }
}

private struct RequestSummaryMetricCard: View {
    let title: String
    let value: String
    let subtitle: String
    let accent: Color

    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            Text(title.uppercased())
                .font(.caption.weight(.semibold))
                .foregroundStyle(.secondary)

            Text(value)
                .font(.title3.weight(.semibold))
                .foregroundStyle(.primary)

            Text(subtitle)
                .font(.footnote)
                .foregroundStyle(.secondary)
        }
        .padding(16)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(accent.opacity(0.10), in: RoundedRectangle(cornerRadius: 20, style: .continuous))
        .overlay(
            RoundedRectangle(cornerRadius: 20, style: .continuous)
                .stroke(accent.opacity(0.08), lineWidth: 1)
        )
    }
}

private struct NotificationPermissionCard: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool

    var body: some View {
        VStack(alignment: .leading, spacing: 18) {
            HStack(alignment: .top, spacing: 14) {
                Image(systemName: model.notificationPermission.systemImage)
                    .font(.title2)
                    .frame(width: 38, height: 38)
                    .background(.thinMaterial, in: Circle())
                    .foregroundStyle(dashboardAccent)

                VStack(alignment: .leading, spacing: 5) {
                    Text(model.notificationPermission.title)
                        .font(.headline)
                    Text(model.notificationPermission.summary)
                        .foregroundStyle(.secondary)
                }
            }

            Group {
                if compactLayout {
                    VStack(spacing: 12) {
                        permissionButtons
                    }
                } else {
                    HStack(spacing: 12) {
                        permissionButtons
                    }
                }
            }
        }
        .padding(18)
        .dashboardSurface(radius: 24)
    }

    @ViewBuilder
    private var permissionButtons: some View {
        Button {
            Task {
                await model.requestNotificationAccess()
            }
        } label: {
            Label("Enable Notifications", systemImage: "bell.and.waves.left.and.right.fill")
        }
        .buttonStyle(.borderedProminent)

        Button {
            Task {
                await model.sendTestNotification()
            }
        } label: {
            Label("Send Test Alert", systemImage: "paperplane.fill")
        }
        .buttonStyle(.bordered)
    }
}

private struct ActivityPreviewCard: View {
    @ObservedObject var model: AppViewModel
    let compactLayout: Bool

    var body: some View {
        VStack(alignment: .leading, spacing: 16) {
            if let latest = model.latestNotification {
                NotificationCard(
                    notification: latest,
                    compactLayout: compactLayout,
                    onMarkRead: {
                        Task { await model.markNotificationRead(latest) }
                    }
                )
            } else {
                EmptyStateCopy(
                    title: "No activity yet",
                    systemImage: "clock.badge.xmark",
                    message: "Once requests and pairing events arrive, the activity timeline will fill in here."
                )
            }

            if compactLayout {
                VStack(alignment: .leading, spacing: 12) {
                    Button {
                        model.selectedSection = .activity
                    } label: {
                        Label("Open Activity", systemImage: "clock.arrow.trianglehead.counterclockwise.rotate.90")
                    }
                    .buttonStyle(.borderedProminent)

                    Button {
                        model.isNotificationCenterPresented = true
                    } label: {
                        Label("Open Notification Bell", systemImage: "bell")
                    }
                    .buttonStyle(.bordered)
                }
            } else {
                HStack(spacing: 12) {
                    Button {
                        model.selectedSection = .activity
                    } label: {
                        Label("Open Activity", systemImage: "clock.arrow.trianglehead.counterclockwise.rotate.90")
                    }
                    .buttonStyle(.borderedProminent)

                    Button {
                        model.isNotificationCenterPresented = true
                    } label: {
                        Label("Open Notifications", systemImage: "bell")
                    }
                    .buttonStyle(.bordered)

                    Spacer()

                    Text("Unread device alerts now live in the bell above instead of taking a full navigation slot.")
                        .font(.footnote)
                        .foregroundStyle(.secondary)
                        .multilineTextAlignment(.trailing)
                }
            }
        }
    }
}

private struct NotificationBellButton: View {
    @ObservedObject var model: AppViewModel

    var body: some View {
        Button {
            model.isNotificationCenterPresented = true
        } label: {
            ZStack(alignment: .topTrailing) {
                Image(systemName: model.unreadNotificationCount == 0 ? "bell" : "bell.badge.fill")
                    .font(.headline)
                    .foregroundStyle(model.unreadNotificationCount == 0 ? .primary : dashboardAccent)

                if model.unreadNotificationCount > 0 {
                    Text("\(min(model.unreadNotificationCount, 9))")
                        .font(.caption2.weight(.bold))
                        .padding(.horizontal, 5)
                        .padding(.vertical, 2)
                        .background(Color.orange, in: Capsule())
                        .foregroundStyle(.white)
                        .offset(x: 10, y: -10)
                }
            }
            .frame(width: 28, height: 28)
        }
        .accessibilityLabel("Notifications")
    }
}

private struct NotificationCenterSheet: View {
    @ObservedObject var model: AppViewModel
    @Environment(\.dismiss) private var dismiss
    @Environment(\.horizontalSizeClass) private var horizontalSizeClass

    var body: some View {
        NavigationStack {
            ScrollView {
                NotificationsPanel(model: model, compactLayout: compactLayout)
                    .padding(.horizontal, compactLayout ? DashboardSpacing.compactOuterPadding : DashboardSpacing.regularOuterPadding)
                    .padding(.top, compactLayout ? DashboardSpacing.compactTopPadding : DashboardSpacing.regularTopPadding)
                    .padding(.bottom, compactLayout ? DashboardSpacing.compactBottomPadding : DashboardSpacing.regularBottomPadding)
                    .frame(maxWidth: compactLayout ? DashboardSpacing.compactContentWidth : DashboardSpacing.regularContentWidth, alignment: .leading)
                    .frame(maxWidth: .infinity, alignment: compactLayout ? .leading : .center)
            }
            .scrollIndicators(.hidden)
            .navigationTitle("Notifications")
            .toolbar {
                ToolbarItem(placement: .cancellationAction) {
                    Button("Done") {
                        dismiss()
                    }
                }
            }
        }
        #if os(iOS)
        .presentationDetents(compactLayout ? [.large] : [.medium, .large])
        #endif
    }

    private var compactLayout: Bool {
        #if os(iOS)
        horizontalSizeClass == .compact
        #else
        false
        #endif
    }
}

private struct AccountHero: View {
    let profile: MemberProfile
    let session: AuthSession
    let compactLayout: Bool

    var body: some View {
        ZStack(alignment: .bottomLeading) {
            RoundedRectangle(cornerRadius: 32, style: .continuous)
                .fill(
                    LinearGradient(
                        colors: [
                            dashboardAccent.opacity(0.95),
                            Color(red: 0.19, green: 0.49, blue: 0.40),
                            dashboardGold.opacity(0.92)
                        ],
                        startPoint: .topLeading,
                        endPoint: .bottomTrailing
                    )
                )

            VStack(alignment: .leading, spacing: 14) {
                Text(profile.name)
                    .font(.system(size: compactLayout ? 28 : 34, weight: .bold, design: .rounded))
                    .foregroundStyle(.white)
                Text(profile.handle)
                    .font(.headline)
                    .foregroundStyle(.white.opacity(0.84))
                Text("Current trusted device: \(session.deviceName)")
                    .foregroundStyle(.white.opacity(0.86))
            }
            .padding(compactLayout ? 22 : 28)
        }
        .frame(minHeight: compactLayout ? 190 : 220)
    }
}

private struct AccountFactGrid: View {
    let profile: MemberProfile
    let session: AuthSession
    let compactLayout: Bool

    private var columns: [GridItem] {
        Array(repeating: GridItem(.flexible(), spacing: 12), count: compactLayout ? 1 : 2)
    }

    var body: some View {
        LazyVGrid(columns: columns, spacing: 12) {
            FactCard(label: "Organization", value: profile.organization)
            FactCard(label: "Origin", value: session.originHost)
            FactCard(label: "Paired At", value: session.pairedAt.formatted(date: .abbreviated, time: .shortened))
            FactCard(label: "Token Preview", value: "…\(session.tokenPreview)")
            FactCard(label: "Trusted Devices", value: "\(profile.deviceCount)")
            FactCard(label: "Recovery", value: profile.recoverySummary)
        }
    }
}

private struct RequestCard: View {
    let request: ApprovalRequest
    let compactLayout: Bool
    let isBusy: Bool
    let onApprove: (() -> Void)?
    let onReject: (() -> Void)?
    let onOpenRequest: (() -> Void)?

    private var infoColumns: [GridItem] {
        Array(repeating: GridItem(.flexible(), spacing: 10), count: compactLayout ? 2 : 3)
    }

    var body: some View {
        VStack(alignment: .leading, spacing: 16) {
            HStack(alignment: .top, spacing: 14) {
                ZStack {
                    Circle()
                        .fill(requestAccent.opacity(0.14))

                    Image(systemName: request.kind.systemImage)
                        .font(.title2)
                        .foregroundStyle(requestAccent)
                }
                .frame(width: 46, height: 46)

                VStack(alignment: .leading, spacing: 8) {
                    HStack(alignment: .top, spacing: 12) {
                        VStack(alignment: .leading, spacing: 4) {
                            Text(request.trustHeadline)
                                .font(.subheadline.weight(.semibold))
                                .foregroundStyle(requestAccent)

                            Text(request.title)
                                .font(.headline)
                                .foregroundStyle(.primary)
                        }

                        Spacer()

                        StatusBadge(
                            title: request.status.title,
                            tone: statusTone
                        )
                    }

                    Text(request.subtitle)
                        .foregroundStyle(.secondary)

                    HStack(spacing: 8) {
                        StatusBadge(title: request.kind.title, tone: .blue)
                        StatusBadge(title: request.risk.title, tone: request.risk == .routine ? .mint : .orange)
                        Text(request.createdAt, style: .relative)
                            .font(.footnote)
                            .foregroundStyle(.secondary)
                    }
                }
            }

            LazyVGrid(columns: infoColumns, alignment: .leading, spacing: 10) {
                RequestFactPill(label: "Source", value: request.source, accent: dashboardAccent)
                RequestFactPill(
                    label: "Requested",
                    value: request.createdAt.formatted(date: .abbreviated, time: .shortened),
                    accent: dashboardGold
                )
                RequestFactPill(label: "Access", value: request.scopeSummary, accent: requestAccent)
            }

            VStack(alignment: .leading, spacing: 10) {
                Label(request.status == .pending ? "Decision posture" : "Decision record", systemImage: request.status.systemImage)
                    .font(.headline)
                    .foregroundStyle(.primary)

                Text(request.trustDetail)
                    .foregroundStyle(.secondary)

                Text(reviewSummary)
                    .font(.subheadline.weight(.semibold))
                    .foregroundStyle(requestAccent)
            }
            .padding(14)
            .frame(maxWidth: .infinity, alignment: .leading)
            .background(requestAccent.opacity(0.10), in: RoundedRectangle(cornerRadius: 22, style: .continuous))
            .overlay(
                RoundedRectangle(cornerRadius: 22, style: .continuous)
                    .stroke(requestAccent.opacity(0.08), lineWidth: 1)
            )

            if !request.scopes.isEmpty {
                VStack(alignment: .leading, spacing: 10) {
                    Text("Requested scopes")
                        .font(.subheadline.weight(.semibold))

                    FlowScopes(scopes: request.scopes)
                }
            }

            VStack(spacing: 12) {
                if let onOpenRequest {
                    Button {
                        onOpenRequest()
                    } label: {
                        Label("Review Details", systemImage: "arrow.up.forward.app")
                    }
                    .buttonStyle(.bordered)
                    .frame(maxWidth: .infinity, alignment: .leading)
                }

                if let onApprove, let onReject, request.status == .pending {
                    if compactLayout {
                        VStack(spacing: 10) {
                            Button {
                                onApprove()
                            } label: {
                                if isBusy {
                                    ProgressView()
                                } else {
                                    Label("Approve Request", systemImage: "checkmark.circle.fill")
                                }
                            }
                            .buttonStyle(.borderedProminent)
                            .disabled(isBusy)

                            Button(role: .destructive) {
                                onReject()
                            } label: {
                                Label("Reject Request", systemImage: "xmark.circle.fill")
                            }
                            .buttonStyle(.bordered)
                            .disabled(isBusy)
                        }
                    } else {
                        HStack(spacing: 12) {
                            Button {
                                onApprove()
                            } label: {
                                if isBusy {
                                    ProgressView()
                                } else {
                                    Label("Approve", systemImage: "checkmark.circle.fill")
                                }
                            }
                            .buttonStyle(.borderedProminent)
                            .disabled(isBusy)

                            Button(role: .destructive) {
                                onReject()
                            } label: {
                                Label("Reject", systemImage: "xmark.circle.fill")
                            }
                            .buttonStyle(.bordered)
                            .disabled(isBusy)
                        }
                    }
                }
            }
        }
        .padding(compactLayout ? 18 : 20)
        .background(
            LinearGradient(
                colors: [
                    Color.white.opacity(0.92),
                    requestAccent.opacity(0.05)
                ],
                startPoint: .topLeading,
                endPoint: .bottomTrailing
            ),
            in: RoundedRectangle(cornerRadius: 28, style: .continuous)
        )
        .overlay(
            RoundedRectangle(cornerRadius: 28, style: .continuous)
                .stroke(requestAccent.opacity(0.10), lineWidth: 1)
        )
        .shadow(color: dashboardShadow, radius: 12, y: 5)
    }

    private var statusTone: Color {
        switch request.status {
        case .pending:
            return .orange
        case .approved:
            return .green
        case .rejected:
            return .red
        }
    }

    private var requestAccent: Color {
        switch request.status {
        case .approved:
            return .green
        case .rejected:
            return .red
        case .pending:
            return request.risk == .routine ? dashboardAccent : .orange
        }
    }

    private var reviewSummary: String {
        switch request.status {
        case .pending:
            if request.risk == .elevated {
                return "This is privileged access. Let it through only if the origin and the moment both match what you just initiated."
            }
            return "This looks routine, but it still needs to match the browser, CLI, or device session you expect."
        case .approved:
            return "This request was already approved in the mock queue and is now part of the recent audit trail."
        case .rejected:
            return "This request was rejected and should remain a closed lane unless a new request is issued."
        }
    }
}

private struct RequestQueueRow: View {
    let request: ApprovalRequest
    let isSelected: Bool
    let action: () -> Void

    var body: some View {
        Button(action: action) {
            HStack(alignment: .top, spacing: 12) {
                ZStack {
                    RoundedRectangle(cornerRadius: 16, style: .continuous)
                        .fill(rowAccent.opacity(0.14))

                    Image(systemName: request.kind.systemImage)
                        .font(.headline)
                        .foregroundStyle(rowAccent)
                }
                .frame(width: 38, height: 38)

                VStack(alignment: .leading, spacing: 10) {
                    HStack(alignment: .top, spacing: 12) {
                        VStack(alignment: .leading, spacing: 4) {
                            Text(request.title)
                                .font(.headline)
                                .foregroundStyle(.primary)
                                .multilineTextAlignment(.leading)
                                .lineLimit(2)

                            Text(request.trustHeadline)
                                .font(.subheadline.weight(.semibold))
                                .foregroundStyle(rowAccent)
                                .lineLimit(1)
                        }

                        Spacer(minLength: 0)

                        StatusBadge(
                            title: request.status.title,
                            tone: statusTone
                        )
                    }

                    Text(request.source)
                        .font(.subheadline)
                        .foregroundStyle(.secondary)
                        .lineLimit(1)

                    Text(request.subtitle)
                        .font(.footnote)
                        .foregroundStyle(.secondary)
                        .lineLimit(1)
                        .multilineTextAlignment(.leading)

                    HStack(spacing: 8) {
                        StatusBadge(title: request.risk.title, tone: request.risk == .routine ? .mint : .orange)
                        StatusBadge(title: request.scopeSummary, tone: .blue)
                        Spacer()
                        Text(request.createdAt, style: .relative)
                            .font(.footnote)
                            .foregroundStyle(.secondary)
                    }
                }

                Image(systemName: isSelected ? "chevron.right.circle.fill" : "chevron.right")
                    .font(.headline)
                    .foregroundStyle(isSelected ? rowAccent : .secondary.opacity(0.7))
                    .padding(.top, 2)
            }
            .padding(16)
            .frame(maxWidth: .infinity, alignment: .leading)
            .background(backgroundStyle, in: RoundedRectangle(cornerRadius: 24, style: .continuous))
            .overlay(
                RoundedRectangle(cornerRadius: 24, style: .continuous)
                    .stroke(isSelected ? rowAccent.opacity(0.36) : Color.clear, lineWidth: 1.5)
            )
            .overlay(alignment: .leading) {
                Capsule()
                    .fill(rowAccent.opacity(isSelected ? 0.80 : 0.30))
                    .frame(width: 5)
                    .padding(.vertical, 16)
                    .padding(.leading, 8)
            }
        }
        .buttonStyle(.plain)
    }

    private var statusTone: Color {
        switch request.status {
        case .pending:
            .orange
        case .approved:
            .green
        case .rejected:
            .red
        }
    }

    private var backgroundStyle: Color {
        isSelected ? rowAccent.opacity(0.08) : Color.white.opacity(0.90)
    }

    private var rowAccent: Color {
        switch request.status {
        case .approved:
            .green
        case .rejected:
            .red
        case .pending:
            request.risk == .routine ? dashboardAccent : .orange
        }
    }
}

private struct RequestWorkbenchDetail: View {
    let request: ApprovalRequest
    let isBusy: Bool
    let onApprove: (() -> Void)?
    let onReject: (() -> Void)?
    let onOpenRequest: () -> Void

    private let columns = [
        GridItem(.flexible(), spacing: 12),
        GridItem(.flexible(), spacing: 12)
    ]

    var body: some View {
        VStack(alignment: .leading, spacing: 18) {
            ZStack(alignment: .topLeading) {
                RoundedRectangle(cornerRadius: 30, style: .continuous)
                    .fill(
                        LinearGradient(
                            colors: [
                                request.risk == .routine ? dashboardAccent.opacity(0.95) : Color.orange.opacity(0.92),
                                dashboardGold.opacity(0.88)
                            ],
                            startPoint: .topLeading,
                            endPoint: .bottomTrailing
                        )
                    )
                    .overlay(
                        RoundedRectangle(cornerRadius: 30, style: .continuous)
                            .strokeBorder(requestAccent.opacity(0.20), lineWidth: 1)
                    )

                VStack(alignment: .leading, spacing: 16) {
                    HStack(alignment: .top, spacing: 12) {
                        VStack(alignment: .leading, spacing: 10) {
                            HStack(spacing: 8) {
                                StatusBadge(title: request.kind.title, tone: .white)
                                StatusBadge(title: request.risk.title, tone: .white)
                                StatusBadge(title: request.status.title, tone: .white)
                            }

                            Text(request.title)
                                .font(.system(size: 30, weight: .bold, design: .rounded))
                                .foregroundStyle(.white)

                            Text(request.trustHeadline)
                                .font(.headline)
                                .foregroundStyle(.white.opacity(0.84))
                        }

                        Spacer(minLength: 0)

                        VStack(alignment: .trailing, spacing: 6) {
                            Text("REQUESTED")
                                .font(.caption.weight(.bold))
                                .foregroundStyle(.white.opacity(0.72))

                            Text(request.createdAt.formatted(date: .abbreviated, time: .shortened))
                                .font(.subheadline.weight(.semibold))
                                .foregroundStyle(.white)
                        }
                    }

                    Text(request.subtitle)
                        .font(.title3)
                        .foregroundStyle(.white.opacity(0.88))

                    HStack(spacing: 14) {
                        Label(request.source, systemImage: "network")
                        Label(request.scopeSummary, systemImage: "lock.shield")
                    }
                    .font(.subheadline)
                    .foregroundStyle(.white.opacity(0.88))

                    Text(request.trustDetail)
                        .font(.subheadline)
                        .foregroundStyle(.white.opacity(0.82))
                }
                .padding(24)
            }
            .frame(minHeight: 220)

            LazyVGrid(columns: columns, spacing: 12) {
                FactCard(label: "Source", value: request.source)
                FactCard(label: "Requested", value: request.createdAt.formatted(date: .abbreviated, time: .shortened))
                FactCard(label: "Type", value: request.kind.title)
                FactCard(label: "Status", value: request.status.title)
                FactCard(label: "Risk", value: request.risk.summary)
                FactCard(label: "Access", value: request.scopeSummary)
            }

            HStack(alignment: .top, spacing: 12) {
                RequestSignalCard(
                    title: "Trust Signals",
                    subtitle: "The approval story should match the device, the product, and the moment you just triggered.",
                    accent: requestAccent
                ) {
                    VStack(alignment: .leading, spacing: 14) {
                        GuidanceRow(
                            icon: "network.badge.shield.half.filled",
                            title: "Source must look familiar",
                            message: "This request comes from \(request.source). Only approve if that host or product lines up with what you intended."
                        )
                        GuidanceRow(
                            icon: "person.badge.shield.checkmark",
                            title: "Action should fit the session",
                            message: request.trustDetail
                        )
                        GuidanceRow(
                            icon: request.risk == .routine ? "checkmark.shield" : "exclamationmark.shield",
                            title: request.risk == .routine ? "Routine review is still a review" : "Elevated access deserves a pause",
                            message: request.risk.guidance
                        )
                    }
                }

                RequestSignalCard(
                    title: "Access Envelope",
                    subtitle: "These are the capabilities this request wants before it can proceed.",
                    accent: dashboardGold
                ) {
                    if request.scopes.isEmpty {
                        Text("The mock backend did not provide explicit scopes for this request.")
                            .foregroundStyle(.secondary)
                    } else {
                        FlowScopes(scopes: request.scopes)
                    }
                }
            }

            RequestSignalCard(
                title: request.status == .pending ? "Decision Rail" : "Decision Record",
                subtitle: request.status == .pending
                    ? "Use the actions below only once the request story matches the device in your hand."
                    : "This request already moved through the queue, so this rail becomes a compact audit note.",
                accent: statusTone
            ) {
                VStack(alignment: .leading, spacing: 14) {
                    Text(request.trustDetail)
                        .foregroundStyle(.secondary)

                    Text(decisionSummary)
                        .font(.headline)

                    HStack(spacing: 12) {
                        Button {
                            onOpenRequest()
                        } label: {
                            Label("Open Full Review", systemImage: "arrow.up.forward.app")
                        }
                        .buttonStyle(.bordered)

                        Spacer()

                        if let onApprove, let onReject, request.status == .pending {
                            Button {
                                onApprove()
                            } label: {
                                if isBusy {
                                    ProgressView()
                                } else {
                                    Label("Approve", systemImage: "checkmark.circle.fill")
                                }
                            }
                            .buttonStyle(.borderedProminent)
                            .disabled(isBusy)

                            Button(role: .destructive) {
                                onReject()
                            } label: {
                                Label("Reject", systemImage: "xmark.circle.fill")
                            }
                            .buttonStyle(.bordered)
                            .disabled(isBusy)
                        }
                    }
                }
            }
        }
        .frame(maxWidth: .infinity, alignment: .leading)
    }

    private var statusTone: Color {
        switch request.status {
        case .pending:
            return .orange
        case .approved:
            return .green
        case .rejected:
            return .red
        }
    }

    private var requestAccent: Color {
        request.risk == .routine ? dashboardAccent : .orange
    }

    private var decisionSummary: String {
        switch request.status {
        case .pending:
            return request.risk == .routine
                ? "Approve only if the origin and timing feel boringly expected."
                : "Privileged requests should feel unmistakably intentional before you approve them."
        case .approved:
            return "This request has already been approved and should now be treated as part of your recent decision history."
        case .rejected:
            return "This request was rejected and is now a record of a blocked access attempt."
        }
    }
}

private struct RequestFactPill: View {
    let label: String
    let value: String
    let accent: Color

    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(label.uppercased())
                .font(.caption2.weight(.semibold))
                .foregroundStyle(.secondary)

            Text(value)
                .font(.subheadline.weight(.semibold))
                .foregroundStyle(.primary)
                .lineLimit(2)
                .minimumScaleFactor(0.8)
        }
        .padding(.horizontal, 12)
        .padding(.vertical, 10)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(accent.opacity(0.10), in: RoundedRectangle(cornerRadius: 18, style: .continuous))
        .overlay(
            RoundedRectangle(cornerRadius: 18, style: .continuous)
                .stroke(accent.opacity(0.08), lineWidth: 1)
        )
    }
}

private struct RequestSignalCard<Content: View>: View {
    let title: String
    let subtitle: String
    let accent: Color
    let content: () -> Content

    init(
        title: String,
        subtitle: String,
        accent: Color,
        @ViewBuilder content: @escaping () -> Content
    ) {
        self.title = title
        self.subtitle = subtitle
        self.accent = accent
        self.content = content
    }

    var body: some View {
        VStack(alignment: .leading, spacing: 14) {
            HStack(alignment: .top, spacing: 12) {
                Circle()
                    .fill(accent.opacity(0.16))
                    .frame(width: 34, height: 34)
                    .overlay {
                        Circle()
                            .stroke(accent.opacity(0.30), lineWidth: 1)
                    }

                VStack(alignment: .leading, spacing: 4) {
                    Text(title)
                        .font(.headline)
                    Text(subtitle)
                        .foregroundStyle(.secondary)
                }
            }

            content()
        }
        .padding(18)
        .frame(maxWidth: .infinity, alignment: .leading)
        .dashboardSurface(radius: 24)
    }
}

private struct RequestDetailSheet: View {
    let request: ApprovalRequest
    @ObservedObject var model: AppViewModel

    @Environment(\.dismiss) private var dismiss

    var body: some View {
        NavigationStack {
            ScrollView {
                VStack(alignment: .leading, spacing: 20) {
                    RequestDetailHero(request: request)

                    SectionCard(
                        title: "Requested Access",
                        subtitle: "The exact scopes or capabilities this action wants to receive."
                    ) {
                        if request.scopes.isEmpty {
                            Text("No explicit scopes were provided by the mock backend.")
                                .foregroundStyle(.secondary)
                        } else {
                            FlowScopes(scopes: request.scopes)
                        }
                    }

                    SectionCard(
                        title: "Trust Signals",
                        subtitle: "The details to validate before you approve anything sensitive."
                    ) {
                        VStack(alignment: .leading, spacing: 12) {
                            FactCard(label: "Source", value: request.source)
                            FactCard(label: "Requested", value: request.createdAt.formatted(date: .abbreviated, time: .shortened))
                            FactCard(label: "Type", value: request.kind.title)
                            FactCard(label: "Risk", value: request.risk.summary)
                        }
                    }

                    SectionCard(
                        title: "Decision Guidance",
                        subtitle: "A short operator-minded reminder before you accept or reject this request."
                    ) {
                        Text(request.trustDetail)
                            .foregroundStyle(.secondary)

                        Text(request.risk.guidance)
                            .font(.headline)
                    }

                    if request.status == .pending {
                        VStack(spacing: 12) {
                            Button {
                                Task {
                                    await model.approve(request)
                                    dismiss()
                                }
                            } label: {
                                if model.activeRequestID == request.id {
                                    ProgressView()
                                } else {
                                    Label("Approve Request", systemImage: "checkmark.circle.fill")
                                }
                            }
                            .buttonStyle(.borderedProminent)
                            .disabled(model.activeRequestID == request.id)

                            Button(role: .destructive) {
                                Task {
                                    await model.reject(request)
                                    dismiss()
                                }
                            } label: {
                                Label("Reject Request", systemImage: "xmark.circle.fill")
                            }
                            .buttonStyle(.bordered)
                            .disabled(model.activeRequestID == request.id)
                        }
                    }
                }
                .padding(.horizontal, DashboardSpacing.compactOuterPadding)
                .padding(.top, DashboardSpacing.compactTopPadding)
                .padding(.bottom, DashboardSpacing.compactBottomPadding)
                .frame(maxWidth: DashboardSpacing.compactContentWidth, alignment: .leading)
                .frame(maxWidth: .infinity, alignment: .leading)
            }
            .navigationTitle("Review Request")
            .toolbar {
                ToolbarItem(placement: .cancellationAction) {
                    Button("Close") {
                        dismiss()
                    }
                }
            }
        }
    }
}

private struct RequestDetailHero: View {
    let request: ApprovalRequest

    var body: some View {
        ZStack(alignment: .bottomLeading) {
            RoundedRectangle(cornerRadius: 30, style: .continuous)
                .fill(
                    LinearGradient(
                        colors: [
                            request.risk == .routine ? dashboardAccent.opacity(0.92) : Color.orange.opacity(0.92),
                            dashboardGold.opacity(0.88)
                        ],
                        startPoint: .topLeading,
                        endPoint: .bottomTrailing
                    )
                )

            VStack(alignment: .leading, spacing: 12) {
                Text(request.trustHeadline)
                    .font(.headline)
                    .foregroundStyle(.white.opacity(0.86))
                Text(request.title)
                    .font(.system(size: 30, weight: .bold, design: .rounded))
                    .foregroundStyle(.white)
                Text(request.subtitle)
                    .foregroundStyle(.white.opacity(0.86))
            }
            .padding(24)
        }
        .frame(minHeight: 210)
    }
}

private struct NotificationCard: View {
    let notification: AppNotification
    let compactLayout: Bool
    let onMarkRead: () -> Void

    var body: some View {
        VStack(alignment: .leading, spacing: 14) {
            HStack(alignment: .top, spacing: 14) {
                Image(systemName: notification.kind.systemImage)
                    .font(.title3)
                    .frame(width: 38, height: 38)
                    .background(.thinMaterial, in: Circle())
                    .foregroundStyle(accentColor)

                VStack(alignment: .leading, spacing: 8) {
                    HStack {
                        Text(notification.title)
                            .font(.headline)
                        Spacer()
                        if notification.isUnread {
                            StatusBadge(title: "Unread", tone: .orange)
                        }
                    }

                    Text(notification.kind.summary)
                        .font(.footnote)
                        .foregroundStyle(.secondary)
                }
            }

            Text(notification.message)
                .foregroundStyle(.secondary)

            Group {
                if compactLayout {
                    VStack(alignment: .leading, spacing: 10) {
                        timestampLabel
                        if notification.isUnread {
                            markReadButton
                        }
                    }
                } else {
                    HStack {
                        timestampLabel
                        Spacer()
                        if notification.isUnread {
                            markReadButton
                        }
                    }
                }
            }
        }
        .padding(compactLayout ? 16 : 18)
        .dashboardSurface(radius: compactLayout ? 22 : 24)
    }

    private var timestampLabel: some View {
        Text(notification.sentAt.formatted(date: .abbreviated, time: .shortened))
            .font(.footnote)
            .foregroundStyle(.secondary)
    }

    private var markReadButton: some View {
        Button {
            onMarkRead()
        } label: {
            Label("Mark Read", systemImage: "checkmark")
        }
        .buttonStyle(.bordered)
    }

    private var accentColor: Color {
        switch notification.kind {
        case .approval:
            .green
        case .security:
            .orange
        case .system:
            .blue
        }
    }
}

private struct NotificationMetricCard: View {
    let title: String
    let value: String
    let subtitle: String
    let accent: Color

    var body: some View {
        VStack(alignment: .leading, spacing: 10) {
            Text(title.uppercased())
                .font(.caption.weight(.semibold))
                .foregroundStyle(.secondary)

            Text(value)
                .font(.title3.weight(.semibold))
                .foregroundStyle(.primary)

            Text(subtitle)
                .font(.footnote)
                .foregroundStyle(.secondary)
        }
        .padding(18)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(accent.opacity(0.10), in: RoundedRectangle(cornerRadius: 20, style: .continuous))
        .overlay(
            RoundedRectangle(cornerRadius: 20, style: .continuous)
                .stroke(accent.opacity(0.08), lineWidth: 1)
        )
    }
}

private struct NotificationFeedRow: View {
    let notification: AppNotification
    let isSelected: Bool
    let action: () -> Void

    var body: some View {
        Button(action: action) {
            VStack(alignment: .leading, spacing: 10) {
                HStack(alignment: .top, spacing: 12) {
                    Image(systemName: notification.kind.systemImage)
                        .font(.headline)
                        .foregroundStyle(accentColor)
                        .frame(width: 34, height: 34)
                        .background(.thinMaterial, in: Circle())

                    VStack(alignment: .leading, spacing: 4) {
                        Text(notification.title)
                            .font(.headline)
                            .foregroundStyle(.primary)
                            .multilineTextAlignment(.leading)

                        Text(notification.kind.summary)
                            .font(.subheadline)
                            .foregroundStyle(.secondary)
                    }

                    Spacer(minLength: 0)

                    if notification.isUnread {
                        Circle()
                            .fill(Color.orange)
                            .frame(width: 10, height: 10)
                    }
                }

                Text(notification.message)
                    .font(.footnote)
                    .foregroundStyle(.secondary)
                    .lineLimit(2)
                    .multilineTextAlignment(.leading)

                HStack {
                    StatusBadge(title: notification.kind.title, tone: accentColor)
                    Spacer()
                    Text(notification.sentAt.formatted(date: .omitted, time: .shortened))
                        .font(.footnote)
                        .foregroundStyle(.secondary)
                }
            }
            .padding(16)
            .frame(maxWidth: .infinity, alignment: .leading)
            .background(backgroundStyle, in: RoundedRectangle(cornerRadius: 24, style: .continuous))
            .overlay(
                RoundedRectangle(cornerRadius: 24, style: .continuous)
                    .stroke(isSelected ? accentColor.opacity(0.35) : Color.clear, lineWidth: 1.5)
            )
        }
        .buttonStyle(.plain)
    }

    private var accentColor: Color {
        switch notification.kind {
        case .approval:
            .green
        case .security:
            .orange
        case .system:
            .blue
        }
    }

    private var backgroundStyle: Color {
        isSelected ? accentColor.opacity(0.10) : Color.white.opacity(0.58)
    }
}

private struct NotificationWorkbenchDetail: View {
    let notification: AppNotification
    let permissionState: NotificationPermissionState
    let onMarkRead: () -> Void

    private let columns = [
        GridItem(.flexible(), spacing: 12),
        GridItem(.flexible(), spacing: 12)
    ]

    var body: some View {
        VStack(alignment: .leading, spacing: 18) {
            ZStack(alignment: .bottomLeading) {
                RoundedRectangle(cornerRadius: 30, style: .continuous)
                    .fill(
                        LinearGradient(
                            colors: [
                                accentColor.opacity(0.95),
                                accentColor.opacity(0.70),
                                dashboardGold.opacity(0.82)
                            ],
                            startPoint: .topLeading,
                            endPoint: .bottomTrailing
                        )
                    )

                VStack(alignment: .leading, spacing: 12) {
                    HStack(spacing: 8) {
                        StatusBadge(title: notification.kind.title, tone: .white)
                        StatusBadge(title: notification.isUnread ? "Unread" : "Read", tone: .white)
                    }

                    Text(notification.title)
                        .font(.system(size: 30, weight: .bold, design: .rounded))
                        .foregroundStyle(.white)

                    Text(notification.message)
                        .foregroundStyle(.white.opacity(0.9))
                }
                .padding(24)
            }
            .frame(minHeight: 210)

            LazyVGrid(columns: columns, spacing: 12) {
                FactCard(label: "Category", value: notification.kind.summary)
                FactCard(label: "Sent", value: notification.sentAt.formatted(date: .abbreviated, time: .shortened))
                FactCard(label: "Inbox State", value: notification.isUnread ? "Still highlighted" : "Already cleared")
                FactCard(label: "Delivery", value: permissionState.title)
            }

            VStack(alignment: .leading, spacing: 10) {
                Text("Delivery Context")
                    .font(.headline)

                Text(permissionState.summary)
                    .foregroundStyle(.secondary)

                Text(notification.isUnread ? "This alert is still asking for attention in the in-app feed." : "This alert has already been acknowledged in the mock inbox.")
                    .font(.headline)
            }
            .padding(18)
            .frame(maxWidth: .infinity, alignment: .leading)
            .background(.thinMaterial, in: RoundedRectangle(cornerRadius: 26, style: .continuous))

            if notification.isUnread {
                Button {
                    onMarkRead()
                } label: {
                    Label("Mark Read", systemImage: "checkmark")
                }
                .buttonStyle(.borderedProminent)
            }
        }
        .frame(maxWidth: .infinity, alignment: .leading)
    }

    private var accentColor: Color {
        switch notification.kind {
        case .approval:
            .green
        case .security:
            .orange
        case .system:
            .blue
        }
    }
}

private struct SectionCard<Content: View>: View {
    let title: String
    let subtitle: String
    let compactLayout: Bool
    let content: () -> Content

    init(
        title: String,
        subtitle: String,
        compactLayout: Bool = false,
        @ViewBuilder content: @escaping () -> Content
    ) {
        self.title = title
        self.subtitle = subtitle
        self.compactLayout = compactLayout
        self.content = content
    }

    var body: some View {
        VStack(alignment: .leading, spacing: 18) {
            VStack(alignment: .leading, spacing: 6) {
                Text(title)
                    .font(.title2.weight(.semibold))
                Text(subtitle)
                    .foregroundStyle(.secondary)
            }

            content()
        }
        .padding(compactLayout ? DashboardSpacing.compactSectionPadding : DashboardSpacing.regularSectionPadding)
        .frame(maxWidth: .infinity, alignment: .leading)
        .dashboardSurface(radius: compactLayout ? DashboardSpacing.compactRadius : DashboardSpacing.regularRadius)
    }
}

private struct BannerCard: View {
    let message: String
    let compactLayout: Bool

    var body: some View {
        HStack(spacing: 12) {
            Image(systemName: "sparkles")
                .font(.title3)
                .foregroundStyle(dashboardAccent)
            Text(message)
                .font(compactLayout ? .subheadline.weight(.semibold) : .headline)
        }
        .padding(.horizontal, 16)
        .padding(.vertical, 12)
        .dashboardSurface(radius: 999, fillOpacity: 0.84)
    }
}

private struct SmallMetricPill: View {
    let title: String
    let value: String

    var body: some View {
        VStack(alignment: .leading, spacing: 4) {
            Text(title.uppercased())
                .font(.caption2.weight(.semibold))
                .foregroundStyle(.secondary)
            Text(value)
                .font(.headline)
        }
        .padding(.horizontal, 12)
        .padding(.vertical, 10)
        .background(.thinMaterial, in: RoundedRectangle(cornerRadius: 18, style: .continuous))
    }
}

private struct HeroMetric: View {
    let title: String
    let value: String

    var body: some View {
        VStack(alignment: .leading, spacing: 6) {
            Text(title.uppercased())
                .font(.caption.weight(.semibold))
                .foregroundStyle(.white.opacity(0.72))
            Text(value)
                .font(.title2.weight(.bold))
                .foregroundStyle(.white)
        }
        .padding(.horizontal, 16)
        .padding(.vertical, 14)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(.white.opacity(0.12), in: RoundedRectangle(cornerRadius: 20, style: .continuous))
    }
}

private struct GuidanceRow: View {
    let icon: String
    let title: String
    let message: String

    var body: some View {
        HStack(alignment: .top, spacing: 12) {
            Image(systemName: icon)
                .font(.title3)
                .frame(width: 32)
                .foregroundStyle(dashboardAccent)

            VStack(alignment: .leading, spacing: 4) {
                Text(title)
                    .font(.headline)
                Text(message)
                    .foregroundStyle(.secondary)
            }
        }
    }
}

private struct GuidanceCard: View {
    let icon: String
    let title: String
    let message: String

    var body: some View {
        VStack(alignment: .leading, spacing: 12) {
            Image(systemName: icon)
                .font(.title3)
                .foregroundStyle(dashboardAccent)

            Text(title)
                .font(.headline)

            Text(message)
                .foregroundStyle(.secondary)
        }
        .padding(18)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(.thinMaterial, in: RoundedRectangle(cornerRadius: 24, style: .continuous))
    }
}

private struct FlowScopes: View {
    let scopes: [String]

    var body: some View {
        ScrollView(.horizontal, showsIndicators: false) {
            HStack(spacing: 8) {
                ForEach(scopes, id: \.self) { scope in
                    Text(scope)
                        .font(.caption.monospaced())
                        .padding(.horizontal, 10)
                        .padding(.vertical, 8)
                        .background(.thinMaterial, in: Capsule())
                }
            }
        }
    }
}

private struct EmptyStateCopy: View {
    let title: String
    let systemImage: String
    let message: String

    var body: some View {
        ContentUnavailableView(
            title,
            systemImage: systemImage,
            description: Text(message)
        )
        .frame(maxWidth: .infinity)
        .padding(.vertical, 10)
    }
}

private struct FactCard: View {
    let label: String
    let value: String

    var body: some View {
        VStack(alignment: .leading, spacing: 6) {
            Text(label.uppercased())
                .font(.caption.weight(.semibold))
                .foregroundStyle(.secondary)
            Text(value)
                .font(.body)
        }
        .padding(14)
        .frame(maxWidth: .infinity, alignment: .leading)
        .dashboardSurface(radius: 18)
    }
}

private struct StatusBadge: View {
    let title: String
    let tone: Color

    var body: some View {
        Text(title)
            .font(.caption.weight(.semibold))
            .lineLimit(1)
            .minimumScaleFactor(0.8)
            .fixedSize(horizontal: true, vertical: false)
            .padding(.horizontal, 10)
            .padding(.vertical, 6)
            .background(tone.opacity(0.14), in: Capsule())
            .foregroundStyle(tone)
    }
}

private struct DashboardBackdrop: View {
    var body: some View {
        LinearGradient(
            colors: [
                Color(red: 0.98, green: 0.98, blue: 0.97),
                Color.white,
                Color(red: 0.97, green: 0.98, blue: 0.99)
            ],
            startPoint: .topLeading,
            endPoint: .bottomTrailing
        )
        .overlay(alignment: .topLeading) {
            Circle()
                .fill(dashboardAccent.opacity(0.10))
                .frame(width: 360, height: 360)
                .blur(radius: 70)
                .offset(x: -120, y: -120)
        }
        .overlay(alignment: .bottomTrailing) {
            Circle()
                .fill(dashboardGold.opacity(0.12))
                .frame(width: 420, height: 420)
                .blur(radius: 90)
                .offset(x: 140, y: 160)
        }
        .ignoresSafeArea()
    }
}