diff --git a/Features/Backup/AppMenuView.swift b/Features/Backup/AppMenuView.swift
index e8f1548..3ef7de1 100644
--- a/Features/Backup/AppMenuView.swift
+++ b/Features/Backup/AppMenuView.swift
@@ -5,10 +5,49 @@ struct AppMenuView: View {
     @EnvironmentObject var lanMonitor: LANMonitor
     @Environment(\.dismiss) private var dismiss
 
+    @State private var showClearConfirm = false
+    @State private var selectedErrorEntry: BackupHistoryEntry?
+
     private var errorEntries: [BackupHistoryEntry] {
         store.historyEntries.filter { $0.failedCount > 0 }
     }
 
+    // Wi-Fi state helpers
+    private var wifiSubtitle: String {
+        if lanMonitor.isOnCellular { return "Cellular only" }
+        if lanMonitor.isOnNetwork { return lanMonitor.currentSSID ?? "Connected" }
+        return "Not connected"
+    }
+
+    private var wifiBadgeLabel: String {
+        if lanMonitor.isOnCellular { return "Cellular" }
+        if lanMonitor.isOnNetwork { return "Connected" }
+        return "Offline"
+    }
+
+    private var wifiBadgeColor: Color {
+        if lanMonitor.isOnCellular { return Color(red: 1.0, green: 0.58, blue: 0.0) }
+        if lanMonitor.isOnNetwork { return AppTheme.positive }
+        return AppTheme.inkQuaternary
+    }
+
+    // NAS badge — TCP ping only, never green (not auth-confirmed)
+    private var nasBadgeLabel: String {
+        switch lanMonitor.nasReachable {
+        case true:  return "Reachable"
+        case false: return "Offline"
+        default:    return "Unknown"
+        }
+    }
+
+    private var nasBadgeColor: Color {
+        switch lanMonitor.nasReachable {
+        case true:  return Color(red: 1.0, green: 0.58, blue: 0.0)
+        case false: return AppTheme.destructive
+        default:    return AppTheme.inkQuaternary
+        }
+    }
+
     var body: some View {
         NavigationStack {
             ZStack {
@@ -38,6 +77,19 @@ struct AppMenuView: View {
                         .foregroundStyle(AppTheme.ink)
                 }
             }
+            .alert("Clear History", isPresented: $showClearConfirm) {
+                Button("Clear", role: .destructive) { store.clearHistory() }
+                Button("Cancel", role: .cancel) {}
+            } message: {
+                if errorEntries.isEmpty {
+                    Text("All \(store.historyEntries.count) backup records will be removed.")
+                } else {
+                    Text("All \(store.historyEntries.count) backup records will be removed, including \(errorEntries.count) error\(errorEntries.count == 1 ? "" : "s").")
+                }
+            }
+            .sheet(item: $selectedErrorEntry) { entry in
+                errorDetailSheet(entry: entry)
+            }
         }
     }
 
@@ -65,35 +117,29 @@ struct AppMenuView: View {
 
                     Spacer()
 
-                    statusBadge(
-                        label: lanMonitor.nasReachable == true ? "Reachable" : lanMonitor.nasReachable == false ? "Offline" : "Unknown",
-                        color: lanMonitor.nasReachable == true ? AppTheme.positive : lanMonitor.nasReachable == false ? AppTheme.destructive : AppTheme.inkQuaternary
-                    )
+                    statusBadge(label: nasBadgeLabel, color: nasBadgeColor)
                 }
                 .padding(.horizontal, AppTheme.cardPad)
                 .padding(.vertical, 14)
 
                 menuHairline
 
-                // Network row
+                // Wi-Fi row — title is always "Wi-Fi"; subtitle shows SSID or connection type
                 HStack(spacing: 12) {
                     iconBadge("wifi", color: AppTheme.inkSecondary)
 
                     VStack(alignment: .leading, spacing: 2) {
-                        Text(lanMonitor.currentSSID ?? "No Wi-Fi")
+                        Text("Wi-Fi")
                             .font(AppTheme.body())
                             .foregroundStyle(AppTheme.ink)
-                        Text(lanMonitor.isOnCellular ? "Cellular" : lanMonitor.isOnNetwork ? "Wi-Fi connected" : "Offline")
+                        Text(wifiSubtitle)
                             .font(AppTheme.micro())
                             .foregroundStyle(AppTheme.inkTertiary)
                     }
 
                     Spacer()
 
-                    statusBadge(
-                        label: lanMonitor.isOnNetwork ? "Online" : "Offline",
-                        color: lanMonitor.isOnNetwork ? AppTheme.positive : AppTheme.inkQuaternary
-                    )
+                    statusBadge(label: wifiBadgeLabel, color: wifiBadgeColor)
                 }
                 .padding(.horizontal, AppTheme.cardPad)
                 .padding(.vertical, 14)
@@ -123,12 +169,20 @@ struct AppMenuView: View {
 
     private var syncActivitySection: some View {
         VStack(alignment: .leading, spacing: 8) {
-            menuSectionLabel("SYNC ACTIVITY")
+            HStack {
+                menuSectionLabel("SYNC ACTIVITY")
+                Spacer()
+                if !store.historyEntries.isEmpty {
+                    Button("Clear") { showClearConfirm = true }
+                        .font(.system(size: 12, weight: .medium))
+                        .foregroundStyle(AppTheme.inkTertiary)
+                }
+            }
 
             VStack(spacing: 0) {
-                let total = store.historyEntries.count
+                let total    = store.historyEntries.count
                 let uploaded = store.historyEntries.reduce(0) { $0 + $1.uploadedCount }
-                let errors  = store.historyEntries.reduce(0) { $0 + $1.failedCount }
+                let errors   = store.historyEntries.reduce(0) { $0 + $1.failedCount }
 
                 activityStat(icon: "clock.arrow.circlepath", label: "Total backups", value: "\(total)")
 
@@ -220,23 +274,33 @@ struct AppMenuView: View {
 
             VStack(spacing: 0) {
                 ForEach(Array(errorEntries.prefix(3).enumerated()), id: \.element.id) { idx, entry in
-                    HStack(spacing: 10) {
-                        Image(systemName: "exclamationmark.triangle.fill")
-                            .font(.system(size: 12, weight: .regular))
-                            .foregroundStyle(AppTheme.destructive)
+                    Button {
+                        selectedErrorEntry = entry
+                    } label: {
+                        HStack(spacing: 10) {
+                            Image(systemName: "exclamationmark.triangle.fill")
+                                .font(.system(size: 12, weight: .regular))
+                                .foregroundStyle(AppTheme.destructive)
 
-                        VStack(alignment: .leading, spacing: 2) {
-                            Text(entry.date, format: .dateTime.month(.abbreviated).day().year())
-                                .font(AppTheme.caption())
-                                .foregroundStyle(AppTheme.ink)
-                            Text("\(entry.failedCount) file\(entry.failedCount == 1 ? "" : "s") failed")
-                                .font(AppTheme.micro())
-                                .foregroundStyle(AppTheme.destructive.opacity(0.8))
+                            VStack(alignment: .leading, spacing: 2) {
+                                Text(entry.date, format: .dateTime.month(.abbreviated).day().year())
+                                    .font(AppTheme.caption())
+                                    .foregroundStyle(AppTheme.ink)
+                                Text("\(entry.failedCount) file\(entry.failedCount == 1 ? "" : "s") failed")
+                                    .font(AppTheme.micro())
+                                    .foregroundStyle(AppTheme.destructive.opacity(0.8))
+                            }
+
+                            Spacer()
+
+                            Image(systemName: "chevron.right")
+                                .font(.system(size: 10, weight: .medium))
+                                .foregroundStyle(AppTheme.inkQuaternary)
                         }
-                        Spacer()
+                        .padding(.horizontal, AppTheme.cardPad)
+                        .padding(.vertical, 12)
                     }
-                    .padding(.horizontal, AppTheme.cardPad)
-                    .padding(.vertical, 12)
+                    .buttonStyle(ScaleButtonStyle())
 
                     if idx < min(errorEntries.count, 3) - 1 {
                         menuHairline
@@ -249,6 +313,100 @@ struct AppMenuView: View {
         }
     }
 
+    // MARK: — Error Detail Sheet
+
+    @ViewBuilder
+    private func errorDetailSheet(entry: BackupHistoryEntry) -> some View {
+        NavigationStack {
+            ZStack {
+                AppTheme.background.ignoresSafeArea()
+                ScrollView {
+                    VStack(spacing: AppTheme.sectionGap) {
+                        VStack(spacing: 0) {
+                            detailRow(label: "Date", value: entry.date.formatted(.dateTime.month(.wide).day().year().hour().minute()))
+                            menuHairline
+                            detailRow(label: "Failed", value: "\(entry.failedCount) file\(entry.failedCount == 1 ? "" : "s")", valueColor: AppTheme.destructive)
+                            menuHairline
+                            detailRow(label: "Uploaded", value: "\(entry.uploadedCount) file\(entry.uploadedCount == 1 ? "" : "s")")
+                            menuHairline
+                            detailRow(label: "Skipped", value: "\(entry.skippedCount) file\(entry.skippedCount == 1 ? "" : "s")")
+                            menuHairline
+                            detailRow(label: "Duration", value: durationString(entry.durationSeconds))
+                            menuHairline
+                            detailRow(label: "NAS", value: entry.nasHost)
+                            menuHairline
+                            detailRow(label: "Triggered by", value: entry.triggeredByLAN ? "LAN (automatic)" : "Manual")
+                        }
+                        .background(AppTheme.surfaceRaised)
+                        .clipShape(RoundedRectangle(cornerRadius: AppTheme.radius, style: .continuous))
+                        .shadow(color: AppTheme.cardShadow, radius: 12, x: 0, y: 2)
+
+                        VStack(alignment: .leading, spacing: 8) {
+                            menuSectionLabel("SUGGESTED FIX")
+                            VStack(alignment: .leading, spacing: 10) {
+                                fixRow(icon: "network", text: "Ensure the device is on the same network as the NAS.")
+                                fixRow(icon: "internaldrive", text: "Check that the NAS has enough available storage space.")
+                                fixRow(icon: "arrow.clockwise", text: "Retry the backup — transient network errors often resolve automatically.")
+                            }
+                            .padding(AppTheme.cardPad)
+                            .background(AppTheme.surfaceRaised)
+                            .clipShape(RoundedRectangle(cornerRadius: AppTheme.radius, style: .continuous))
+                            .shadow(color: AppTheme.cardShadow, radius: 12, x: 0, y: 2)
+                        }
+                    }
+                    .padding(.horizontal, AppTheme.hPad)
+                    .padding(.top, 8)
+                    .padding(.bottom, 48)
+                }
+            }
+            .navigationTitle("Error Detail")
+            .navigationBarTitleDisplayMode(.inline)
+            .toolbar {
+                ToolbarItem(placement: .navigationBarTrailing) {
+                    Button("Done") { selectedErrorEntry = nil }
+                        .font(.system(size: 15, weight: .medium))
+                        .foregroundStyle(AppTheme.ink)
+                }
+            }
+        }
+    }
+
+    private func detailRow(label: String, value: String, valueColor: Color = AppTheme.ink) -> some View {
+        HStack {
+            Text(label)
+                .font(AppTheme.body())
+                .foregroundStyle(AppTheme.inkTertiary)
+            Spacer()
+            Text(value)
+                .font(AppTheme.body())
+                .foregroundStyle(valueColor)
+                .multilineTextAlignment(.trailing)
+        }
+        .padding(.horizontal, AppTheme.cardPad)
+        .padding(.vertical, 13)
+    }
+
+    private func fixRow(icon: String, text: String) -> some View {
+        HStack(alignment: .top, spacing: 10) {
+            Image(systemName: icon)
+                .font(.system(size: 12, weight: .regular))
+                .foregroundStyle(AppTheme.inkSecondary)
+                .frame(width: 16, height: 16)
+                .padding(.top, 1)
+            Text(text)
+                .font(AppTheme.caption())
+                .foregroundStyle(AppTheme.inkSecondary)
+                .fixedSize(horizontal: false, vertical: true)
+        }
+    }
+
+    private func durationString(_ seconds: Double) -> String {
+        if seconds < 60 { return "\(Int(seconds))s" }
+        let m = Int(seconds) / 60
+        let s = Int(seconds) % 60
+        return s == 0 ? "\(m)m" : "\(m)m \(s)s"
+    }
+
     // MARK: — About
 
     private var aboutSection: some View {
diff --git a/Features/Backup/BackupView.swift b/Features/Backup/BackupView.swift
index 97e86c5..149266a 100644
--- a/Features/Backup/BackupView.swift
+++ b/Features/Backup/BackupView.swift
@@ -109,7 +109,7 @@ struct BackupView: View {
         .animation(.spring(response: 0.35, dampingFraction: 0.82), value: vm.photosAuthStatus == .authorized)
         .task {
             vm.loadPhotoCount(filter: store.backupFilter)
-            await loadNASCount()
+            await loadNASAndCompare()
         }
     }
 
@@ -167,9 +167,9 @@ struct BackupView: View {
             VStack(spacing: 4) {
                 ringCenterContent
                     .transition(.opacity.combined(with: .scale(scale: 0.95)))
-                    .id(ringPage)
+                    .id(ringContentID)
             }
-            .animation(.spring(response: 0.3, dampingFraction: 0.85), value: ringPage)
+            .animation(.spring(response: 0.3, dampingFraction: 0.85), value: ringContentID)
         }
         .gesture(
             DragGesture(minimumDistance: 20)
@@ -184,27 +184,32 @@ struct BackupView: View {
         .animation(.spring(response: 0.4, dampingFraction: 0.8), value: engine.job.progress)
     }
 
+    // ID that changes on both page swipe and status transition — drives the ring animation
+    private var ringContentID: String {
+        switch engine.job.status {
+        case .idle, .cancelled: return "\(ringPage)_idle"
+        case .preparing:        return "\(ringPage)_preparing"
+        case .running:          return "\(ringPage)_running"
+        case .paused:           return "\(ringPage)_paused"
+        case .completed:        return "\(ringPage)_done"
+        case .failed:           return "\(ringPage)_failed"
+        }
+    }
+
     @ViewBuilder
     private var ringCenterContent: some View {
         switch ringPage {
-        case 0: // Progress / status
-            VStack(spacing: 4) {
-                Text(percentText)
-                    .font(.system(size: 44, weight: .semibold, design: .rounded))
-                    .foregroundStyle(AppTheme.ink)
-                    .contentTransition(.numericText())
-                    .monospacedDigit()
-                ringStatusLabel
-            }
+        case 0:
+            ringMainView
 
-        case 1: // Pending
+        case 1: // Not backed up
             VStack(spacing: 4) {
-                Text("\(max(0, engine.job.totalFiles - engine.job.uploadedFiles - engine.job.skippedFiles - engine.job.failedFiles))")
+                Text("\(notBackedUpDisplayCount)")
                     .font(.system(size: 44, weight: .semibold, design: .rounded))
                     .foregroundStyle(AppTheme.ink)
                     .contentTransition(.numericText())
                     .monospacedDigit()
-                Text("pending")
+                Text("not backed up")
                     .font(AppTheme.caption())
                     .foregroundStyle(AppTheme.inkTertiary)
             }
@@ -221,66 +226,107 @@ struct BackupView: View {
                     .foregroundStyle(AppTheme.inkTertiary)
             }
 
-        default: // Completed
+        default: // Backed up
             VStack(spacing: 4) {
                 Text("\(engine.job.uploadedFiles)")
                     .font(.system(size: 44, weight: .semibold, design: .rounded))
                     .foregroundStyle(AppTheme.positive)
                     .contentTransition(.numericText())
                     .monospacedDigit()
-                Text("uploaded")
+                Text("backed up")
                     .font(AppTheme.caption())
                     .foregroundStyle(AppTheme.inkTertiary)
             }
         }
     }
 
+    // Page 0 content — changes based on backup state
     @ViewBuilder
-    private var ringStatusLabel: some View {
+    private var ringMainView: some View {
         switch engine.job.status {
-        case .running:
-            VStack(spacing: 2) {
-                Text("\(engine.job.uploadedFiles + engine.job.skippedFiles) of \(engine.job.totalFiles)")
+        case .idle, .cancelled:
+            if vm.totalPhotoCount > 0 && vm.notBackedUpCount == 0 {
+                // All phone photos already exist in NAS
+                VStack(spacing: 8) {
+                    Image(systemName: "checkmark")
+                        .font(.system(size: 30, weight: .medium))
+                        .foregroundStyle(AppTheme.positive)
+                    Text("All photos safe")
+                        .font(AppTheme.caption())
+                        .foregroundStyle(AppTheme.inkTertiary)
+                }
+            } else {
+                VStack(spacing: 6) {
+                    Text("\(vm.notBackedUpCount)")
+                        .font(.system(size: 44, weight: .semibold, design: .rounded))
+                        .foregroundStyle(AppTheme.ink)
+                        .contentTransition(.numericText())
+                        .monospacedDigit()
+                    Text(vm.totalPhotoCount == 0 ? "No photos found" : "not backed up")
+                        .font(AppTheme.caption())
+                        .foregroundStyle(AppTheme.inkTertiary)
+                }
+            }
+
+        case .preparing:
+            VStack(spacing: 10) {
+                ProgressView()
+                    .scaleEffect(0.85)
+                    .tint(AppTheme.inkTertiary)
+                Text("Scanning library…")
+                    .font(AppTheme.caption())
+                    .foregroundStyle(AppTheme.inkTertiary)
+            }
+
+        case .running, .paused:
+            VStack(spacing: 5) {
+                Text(percentText)
+                    .font(.system(size: 44, weight: .semibold, design: .rounded))
+                    .foregroundStyle(AppTheme.ink)
+                    .contentTransition(.numericText())
+                    .monospacedDigit()
+                Text("\(engine.job.uploadedFiles) of \(engine.job.totalFiles) backed up")
                     .font(AppTheme.caption())
                     .foregroundStyle(AppTheme.inkSecondary)
                 if let eta = engine.job.eta {
                     Text("~\(etaString(eta)) remaining")
                         .font(.system(size: 11, weight: .regular))
                         .foregroundStyle(AppTheme.inkTertiary)
+                        .padding(.top, 1)
                 }
             }
-        case .preparing:
-            Text("Preparing…")
-                .font(AppTheme.caption())
-                .foregroundStyle(AppTheme.inkTertiary)
+
         case .completed:
-            Text("Done")
-                .font(.system(size: 13, weight: .medium))
-                .foregroundStyle(AppTheme.positive)
+            VStack(spacing: 8) {
+                Image(systemName: "checkmark")
+                    .font(.system(size: 30, weight: .medium))
+                    .foregroundStyle(AppTheme.positive)
+                Text("\(engine.job.uploadedFiles) photos backed up")
+                    .font(AppTheme.caption())
+                    .foregroundStyle(AppTheme.inkTertiary)
+            }
+
         case .failed:
-            Text("Failed")
-                .font(.system(size: 13, weight: .medium))
-                .foregroundStyle(AppTheme.destructive)
-        case .cancelled:
-            Text("Cancelled")
-                .font(AppTheme.caption())
-                .foregroundStyle(AppTheme.inkTertiary)
-        default:
-            Text(vm.totalPhotoCount > 0 ? "\(vm.totalPhotoCount) photos ready" : "Ready")
-                .font(AppTheme.caption())
-                .foregroundStyle(AppTheme.inkTertiary)
+            VStack(spacing: 8) {
+                Image(systemName: "exclamationmark.circle")
+                    .font(.system(size: 30, weight: .light))
+                    .foregroundStyle(AppTheme.destructive)
+                Text("Backup failed")
+                    .font(.system(size: 13, weight: .medium))
+                    .foregroundStyle(AppTheme.destructive.opacity(0.8))
+            }
         }
     }
 
-    // MARK: — Page indicator dots
+    // MARK: — Page indicator
 
     private var pageIndicator: some View {
         HStack(spacing: 5) {
             ForEach(0..<ringPageCount, id: \.self) { i in
-                Circle()
-                    .fill(i == ringPage ? AppTheme.ink : AppTheme.inkQuaternary)
-                    .frame(width: i == ringPage ? 5 : 4, height: i == ringPage ? 5 : 4)
-                    .animation(.spring(response: 0.25, dampingFraction: 0.8), value: ringPage)
+                Capsule(style: .continuous)
+                    .fill(i == ringPage ? AppTheme.interactive : AppTheme.inkQuaternary)
+                    .frame(width: i == ringPage ? 18 : 5, height: 5)
+                    .animation(.spring(response: 0.3, dampingFraction: 0.75), value: ringPage)
             }
         }
     }
@@ -291,7 +337,7 @@ struct BackupView: View {
         case .failed:             return AppTheme.destructive
         case .running, .paused,
              .preparing:          return Color(red: 1.0, green: 0.58, blue: 0.0)
-        default:                  return AppTheme.inkTertiary.opacity(0.35)
+        default:                  return AppTheme.interactive.opacity(0.28)
         }
     }
 
@@ -299,35 +345,59 @@ struct BackupView: View {
 
     // MARK: — Compact stats strip
 
+    // Photos from the phone set that are NOT yet in the NAS.
+    // Idle: derived from NAS comparison scan.
+    // Active: live remaining from engine job counters.
+    private var notBackedUpDisplayCount: Int {
+        switch engine.job.status {
+        case .running, .paused, .preparing:
+            return max(0, engine.job.totalFiles - engine.job.uploadedFiles
+                       - engine.job.skippedFiles - engine.job.failedFiles)
+        case .completed: return 0
+        default:         return vm.notBackedUpCount
+        }
+    }
+
+    // Photos from the phone set that ARE already safe in the NAS.
+    // Grows during backup as uploads + engine-skipped files are confirmed present.
+    private var alreadySafeDisplayCount: Int {
+        switch engine.job.status {
+        case .running, .paused, .preparing, .completed:
+            return vm.alreadySafeCount + engine.job.uploadedFiles + engine.job.skippedFiles
+        default:
+            return vm.alreadySafeCount
+        }
+    }
+
     private var statsStrip: some View {
-        VStack(spacing: 8) {
+        VStack(spacing: 7) {
             HStack(spacing: 0) {
                 compactStat(
                     nasFileCount.map { "\($0)" } ?? "–",
-                    label: "in NAS",
+                    label: "In NAS",
                     color: AppTheme.interactive
                 )
                 thinDivider
                 compactStat(
                     "\(vm.totalPhotoCount)",
-                    label: "on iPhone",
+                    label: "On iPhone",
                     color: AppTheme.inkSecondary
                 )
                 thinDivider
                 compactStat(
-                    "\(engine.job.uploadedFiles)",
-                    label: "uploaded",
+                    "\(notBackedUpDisplayCount)",
+                    label: "Not Backed Up",
+                    color: AppTheme.inkSecondary
+                )
+                thinDivider
+                compactStat(
+                    "\(alreadySafeDisplayCount)",
+                    label: "Already Safe",
                     color: AppTheme.positive
                 )
-                thinDivider
-                compactStat(
-                    "\(max(0, engine.job.totalFiles - engine.job.uploadedFiles - engine.job.skippedFiles - engine.job.failedFiles))",
-                    label: "left",
-                    color: AppTheme.inkSecondary
-                )
             }
-            .frame(height: 56)
-            .background(AppTheme.surfaceSunken)
+            .frame(height: 48)
+            .background(AppTheme.surfaceSunken.opacity(0.85))
             .clipShape(RoundedRectangle(cornerRadius: 14, style: .continuous))
 
             pageIndicator
@@ -335,26 +405,27 @@ struct BackupView: View {
     }
 
     private func compactStat(_ value: String, label: String, color: Color) -> some View {
-        VStack(spacing: 3) {
+        VStack(spacing: 2) {
             Text(value)
-                .font(.system(size: 16, weight: .semibold))
+                .font(.system(size: 15, weight: .semibold))
                 .foregroundStyle(color)
                 .monospacedDigit()
             Text(label)
                 .font(.system(size: 9, weight: .regular))
                 .foregroundStyle(AppTheme.inkQuaternary)
+                .tracking(0.2)
         }
         .frame(maxWidth: .infinity)
-        .padding(.vertical, 8)
+        .padding(.vertical, 6)
     }
 
     private var thinDivider: some View {
         Rectangle()
-            .fill(AppTheme.separator.opacity(0.7))
-            .frame(width: 0.5, height: 22)
+            .fill(AppTheme.separator.opacity(0.5))
+            .frame(width: 0.5, height: 18)
     }
 
-    private func loadNASCount() async {
+    private func loadNASAndCompare() async {
         guard let conn = store.savedConnection else { return }
         do {
             let s: any NASTransferProtocol = conn.nasProtocol == .smb ? SMBService() : SFTPService()
@@ -362,9 +433,11 @@ struct BackupView: View {
                                 username: conn.username, password: conn.password)
             let items = try await s.listDirectory(at: conn.remotePath)
             nasFileCount = items.filter { !$0.isDirectory }.count
+            vm.compareWithNAS(nasItems: items)
             s.disconnect()
         } catch {
             nasFileCount = nil
+            // On failure: notBackedUpCount stays at totalPhotoCount (conservative — show all as pending)
         }
     }
 
diff --git a/Features/Backup/BackupViewModel.swift b/Features/Backup/BackupViewModel.swift
index 0219353..0a20d5c 100644
--- a/Features/Backup/BackupViewModel.swift
+++ b/Features/Backup/BackupViewModel.swift
@@ -4,13 +4,40 @@ import Photos
 @MainActor
 final class BackupViewModel: ObservableObject {
     @Published var totalPhotoCount: Int = 0
+    @Published var alreadySafeCount: Int = 0
+    @Published var notBackedUpCount: Int = 0
     @Published var photosAuthStatus: PHAuthorizationStatus = PHPhotoLibrary.authorizationStatus(for: .readWrite)
 
     private let photoService = PhotoLibraryService()
+    private var fetchedAssets: [PhotoAsset] = []
 
     func loadPhotoCount(filter: BackupFilter) {
         let assets = photoService.fetchAssets(filter: filter)
+        fetchedAssets = assets
         totalPhotoCount = assets.count
+        // Conservative initial state until NAS scan completes
+        alreadySafeCount = 0
+        notBackedUpCount = assets.count
+    }
+
+    // Called after NAS directory listing loads.
+    // Matches by lowercased filename — same heuristic BackupEngine uses for skip checks.
+    // This gives an accurate pre-scan "Already Safe / Not Backed Up" split before
+    // the user ever taps Start Backup.
+    func compareWithNAS(nasItems: [NASItem]) {
+        let nasFilenames = Set(
+            nasItems
+                .filter { !$0.isDirectory }
+                .map { $0.name.lowercased() }
+        )
+        var safe = 0
+        for asset in fetchedAssets {
+            if nasFilenames.contains(asset.filename.lowercased()) {
+                safe += 1
+            }
+        }
+        alreadySafeCount = safe
+        notBackedUpCount = totalPhotoCount - safe
     }
 
     func requestPhotosAccess() async {