// Auteur : Simon-Pierre Boucher — contact@spboucher.ai
// UniversesView.swift — la grille des 12 univers (cartes accent + compteur en
// direct), l'explorateur générique d'un univers (liste + recherche) et la
// fiche universelle (faits, favori, partage, lien web).
import SwiftUI
import SafariServices
import MapKit

extension URL: @retroactive Identifiable { public var id: String { absoluteString } }

/// Visionneuse plein écran avec zoom (pincement + double-tap)
struct ZoomableImageView: View {
    let url: URL
    let accent: Color
    @Environment(\.dismiss) private var dismiss
    @State private var scale: CGFloat = 1
    @State private var lastScale: CGFloat = 1

    var body: some View {
        ZStack(alignment: .topTrailing) {
            Color.black.ignoresSafeArea()
            KAImage(url: url, accent: accent)
                .aspectRatio(contentMode: .fit)
                .scaleEffect(scale)
                .gesture(
                    MagnifyGesture()
                        .onChanged { v in scale = min(max(lastScale * v.magnification, 1), 5) }
                        .onEnded { _ in lastScale = scale }
                )
                .onTapGesture(count: 2) {
                    withAnimation(.snappy) { scale = scale > 1.5 ? 1 : 2.5; lastScale = scale }
                }
                .accessibilityLabel("Photo en plein écran, pincer pour zoomer")
            Button { dismiss() } label: {
                Image(systemName: "xmark.circle.fill")
                    .font(.title2).foregroundStyle(.white.opacity(0.85))
                    .padding(16)
            }
            .accessibilityLabel("Fermer la photo")
        }
        .statusBarHidden()
    }
}

// MARK: - Grille des univers

struct UniversesView: View {
    @State private var totals: [String: Int] = [:]
    @Environment(\.colorScheme) private var scheme

    @State private var showMap = false
    @State private var path = NavigationPath()

    var body: some View {
        NavigationStack(path: $path) {
            ScrollView {
                VStack(alignment: .leading, spacing: 14) {
                    // manchette éditoriale — l'index de l'écosystème
                    VStack(alignment: .leading, spacing: 4) {
                        HStack(spacing: 8) {
                            Rectangle().fill(KATheme.lime).frame(width: 8, height: 8)
                            Text("L'ÉCOSYSTÈME · \(Ecosystem.all.count) UNIVERS")
                                .font(KAFont.mono(9.5)).kerning(1.1)
                                .foregroundStyle(KATheme.ink2(scheme))
                        }
                        Text("Explorer")
                            .font(KAFont.display(36))
                            .foregroundStyle(KATheme.ink(scheme))
                        Text("Mille sites. Un seul KA.")
                            .font(.subheadline)
                            .foregroundStyle(KATheme.ink2(scheme))
                    }
                    .padding(.bottom, 6)
                    ForEach(Ecosystem.all) { u in
                        NavigationLink(value: u.id) {
                            UniverseBand(universe: u, total: totals[u.id])
                        }
                        .buttonStyle(KAPressStyle())
                        .kaScrollPop(axis: .vertical)
                    }
                }
                .padding(16)
            }
            .background {
                ZStack {
                    KATheme.paper(scheme)
                    KAAurora()
                }
                .ignoresSafeArea()
            }
            .navigationTitle("")
            .toolbar {
                ToolbarItem(placement: .topBarTrailing) {
                    Button { showMap = true } label: { Image(systemName: "map.fill") }
                        .accessibilityLabel("Carte unifiée de l'écosystème")
                }
            }
            .fullScreenCover(isPresented: $showMap) {
                UnifiedMapView()
            }
            .navigationDestination(for: String.self) { id in
                if let u = Ecosystem.universe(id) {
                    UniverseHomeView(universe: u)
                }
            }
            .task {
                // pilotage debug/captures : ouvre directement un univers
                if let id = UserDefaults.standard.string(forKey: "ka.debug.universe"),
                   Ecosystem.universe(id) != nil, path.isEmpty {
                    path.append(id)
                }
                await withTaskGroup(of: (String, Int?).self) { group in
                    for u in Ecosystem.all {
                        group.addTask { (u.id, await UniverseService.liveTotal(u)) }
                    }
                    for await (id, n) in group {
                        if let n { totals[id] = n }
                    }
                }
            }
        }
    }
}

/// Bande éditoriale d'un univers — l'index magazine de l'écosystème :
/// gradient à l'accent, logo en filigrane, grand wordmark, compteur roulant.
struct UniverseBand: View {
    let universe: Universe
    let total: Int?
    @Environment(\.colorScheme) private var scheme

    var body: some View {
        ZStack(alignment: .topTrailing) {
            RoundedRectangle(cornerRadius: 18, style: .continuous)
                .fill(LinearGradient(
                    colors: [universe.accent.opacity(scheme == .dark ? 0.30 : 0.20),
                             universe.accent.opacity(scheme == .dark ? 0.08 : 0.03)],
                    startPoint: .topTrailing, endPoint: .bottomLeading))
                .background(KATheme.surface(scheme),
                            in: RoundedRectangle(cornerRadius: 18, style: .continuous))
            KALogo(universe: universe, size: 120)
                .opacity(scheme == .dark ? 0.14 : 0.10)
                .rotationEffect(.degrees(9))
                .offset(x: 26, y: -18)
                .accessibilityHidden(true)
            HStack(spacing: 12) {
                VStack(alignment: .leading, spacing: 5) {
                    KAWordmark(universe: universe, size: 23)
                    Text(universe.tagline)
                        .font(.caption)
                        .foregroundStyle(KATheme.ink2(scheme))
                        .lineLimit(2)
                        .multilineTextAlignment(.leading)
                    HStack(spacing: 7) {
                        Circle().fill(universe.accent).frame(width: 7, height: 7)
                        if let total {
                            KACountUp(value: total, font: KAFont.display(15),
                                      color: universe.accent)
                            Text(universe.unit.uppercased())
                                .font(KAFont.mono(8))
                                .foregroundStyle(KATheme.ink2(scheme))
                                .lineLimit(1)
                        } else {
                            Text("EN DIRECT")
                                .font(KAFont.mono(8))
                                .foregroundStyle(universe.accent)
                        }
                    }
                    .padding(.top, 2)
                }
                Spacer(minLength: 0)
                Image(systemName: "arrow.right")
                    .font(.subheadline.weight(.bold))
                    .foregroundStyle(.white)
                    .frame(width: 32, height: 32)
                    .background(universe.accent, in: Circle())
            }
            .padding(16)
        }
        .clipShape(RoundedRectangle(cornerRadius: 18, style: .continuous))
        .overlay(RoundedRectangle(cornerRadius: 18, style: .continuous)
            .strokeBorder(KATheme.ink(scheme).opacity(scheme == .dark ? 0.35 : 0.8), lineWidth: 1.5))
        .background(RoundedRectangle(cornerRadius: 18, style: .continuous)
            .fill(universe.accent.opacity(scheme == .dark ? 0.35 : 0.95))
            .offset(x: 6, y: 6))
        .accessibilityElement(children: .combine)
        .accessibilityLabel("\(universe.name) — \(universe.tagline)")
    }
}

// MARK: - Héros de site (reproduction fidèle de la page d'accueil de l'univers)

struct SiteHero: View {
    let universe: Universe
    let liveTotal: Int?
    var openSite: (() -> Void)? = nil
    @Environment(\.colorScheme) private var scheme

    private var copy: HeroCopy? { KAHeroes.hero(universe.id) }

    var body: some View {
        VStack(alignment: .leading, spacing: 12) {
            ticker
            if let c = copy {
                if let k = c.kicker {
                    HStack(spacing: 10) {
                        Rectangle().fill(KATheme.green).frame(width: 26, height: 2.5)
                        Text(k.uppercased())
                            .font(KAFont.mono(10))
                            .foregroundStyle(scheme == .dark ? KATheme.lime : KATheme.green)
                            .kerning(1.1)
                            .lineLimit(2)
                    }
                }
                headline(c)
                Text(c.sub)
                    .font(.subheadline)
                    .foregroundStyle(KATheme.ink2(scheme))
                    .lineLimit(4)
            }
            HStack(spacing: 10) {
                statPill
                Spacer()
                if let openSite {
                    Button(action: { Haptics.tap(); openSite() }) {
                        Text("VOIR LE SITE ↗")
                            .font(KAFont.mono(10))
                            .foregroundStyle(universe.accent)
                            .padding(.horizontal, 12).padding(.vertical, 8)
                            .background(KATheme.inkLight, in: RoundedRectangle(cornerRadius: 6, style: .continuous))
                    }
                    .buttonStyle(KAPressStyle())
                    .accessibilityLabel("Voir le site \(universe.name) dans l'app")
                }
            }
        }
    }

    /// Bandeau ticker encre — la signature du haut des sites
    private var ticker: some View {
        HStack(spacing: 8) {
            KALogo(universe: universe, size: 18)
            Text(universe.unit.uppercased())
                .font(KAFont.mono(9.5))
                .foregroundStyle(.white.opacity(0.9))
            Text("◆").font(KAFont.mono(8)).foregroundStyle(universe.accent)
            Text("EN DIRECT")
                .font(KAFont.mono(9.5))
                .foregroundStyle(universe.accent)
            Text("◆").font(KAFont.mono(8)).foregroundStyle(universe.accent)
            Text(universe.domain.replacingOccurrences(of: "www.", with: "").uppercased())
                .font(KAFont.mono(9.5))
                .foregroundStyle(.white.opacity(0.75))
                .lineLimit(1)
            Spacer(minLength: 0)
        }
        .padding(.horizontal, 12).padding(.vertical, 8)
        .background(KATheme.inkLight, in: RoundedRectangle(cornerRadius: 8, style: .continuous))
    }

    /// Titre display avec le segment surligné SUR l'accent (comme le h1 du site)
    private func headline(_ c: HeroCopy) -> some View {
        var attr = AttributedString(c.headline)
        attr.font = KAFont.display(27)
        attr.foregroundColor = KATheme.ink(scheme)
        if let hl = c.highlight,
           let range = attr.range(of: hl, options: .caseInsensitive) {
            attr[range].backgroundColor = universe.accent
            attr[range].foregroundColor = .white
        }
        return Text(attr).lineSpacing(2)
    }

    private var statPill: some View {
        HStack(spacing: 7) {
            Circle().fill(universe.accent).frame(width: 8, height: 8)
            if let n = liveTotal {
                KACountUp(value: n, font: KAFont.display(15),
                          color: KATheme.ink(scheme))
                Text(universe.unit)
                    .font(.caption).foregroundStyle(KATheme.ink2(scheme))
            } else {
                Text("En direct").font(.caption).foregroundStyle(KATheme.ink2(scheme))
            }
        }
        .padding(.horizontal, 13).padding(.vertical, 8)
        .background(KATheme.surface(scheme), in: Capsule())
        .overlay(Capsule().strokeBorder(KATheme.ink(scheme).opacity(scheme == .dark ? 0.35 : 0.85), lineWidth: 1.5))
        .background(Capsule().fill(scheme == .dark ? Color.clear : KATheme.inkLight).offset(x: 4, y: 4))
    }
}

// MARK: - Explorateur d'un univers

struct UniverseHomeView: View {
    let universe: Universe
    @State private var items: [KAItem] = []
    @State private var query = ""
    @State private var loading = true
    @State private var errorText: String?
    @State private var filterParams: [String: String] = [:]
    @State private var liveTotal: Int?
    @State private var showSite = false
    @State private var cityFilter: String?
    @State private var cityPool: [String] = []  // top villes du premier chargement
    @Environment(\.colorScheme) private var scheme

    var body: some View {
        Group {
            if universe.id == "vrai-prix" {
                VraiPrixView(universe: universe)
            } else if universe.id == "api-ka" {
                APIPlaygroundView(universe: universe)
            } else if universe.listPath == nil {
                webUniverse
            } else {
                list
            }
        }
        .background(KATheme.paper(scheme))
        .navigationTitle(universe.name)
        .navigationBarTitleDisplayMode(.inline)
        .toolbar {
            ToolbarItem(placement: .topBarTrailing) {
                Button { Haptics.tap(); showSite = true } label: {
                    Image(systemName: "globe").accessibilityLabel("Voir le site \(universe.name) dans l'app")
                }
            }
        }
        .fullScreenCover(isPresented: $showSite) {
            SiteBrowserCover(universe: universe)
        }
        .tint(universe.accent)
    }

    /// Univers sans liste native : le site lui-même, embarqué
    private var webUniverse: some View {
        EmbeddedSite(universe: universe)
    }

    /// En-tête FIDÈLE au site : bande teintée accent + logo filigrane autour
    /// du héros (ticker encre, kicker, titre surligné, pilule live roulante).
    private var hero: some View {
        VStack(alignment: .leading, spacing: 0) {
            UniverseHeroBand(universe: universe) {
                SiteHero(universe: universe, liveTotal: liveTotal) { showSite = true }
            }
            FilterBar(universe: universe, params: $filterParams) {
                Task { await load() }
            }
            .padding(.top, 12)
            // les chips MÉTIER de l'univers (4½, Sushi, Télétravail, ≤ 300 k$…)
            UniverseQuickChips(universe: universe, params: $filterParams) {
                Task { await load() }
            }
            .padding(.top, 8)
        }
    }

    private var list: some View {
        ScrollView {
            LazyVStack(spacing: 14) {
                hero
                if loading {
                    ForEach(0..<6, id: \.self) { _ in KASkeletonRow() }
                } else if let e = errorText, items.isEmpty {
                    KAEmptyState(symbol: "wifi.exclamationmark", title: "Impossible de charger",
                                 message: e + "\nTirez pour réessayer.")
                } else if items.isEmpty {
                    if universe.id == "trouve-ka" && query.isEmpty {
                        KAEmptyState(symbol: "magnifyingglass",
                                     title: "Cherchez le web québécois",
                                     message: "1,2 M de pages d'ici indexées — tapez un mot dans la barre de recherche ci-dessus.")
                    } else {
                        KAEmptyState(symbol: "tray", title: "Aucun résultat",
                                     message: "Essayez d'autres mots-clés.")
                    }
                } else {
                    UniverseStatStrip(universe: universe, liveTotal: liveTotal,
                                      shown: items.count,
                                      cityCount: Set(items.compactMap(\.city)).count)
                    if cityPool.count > 1 {
                        UniverseCityChips(cities: cityPool, selected: $cityFilter,
                                          accent: universe.accent) {
                            Task { await load() }
                        }
                    }
                    magazine
                }
            }
            .padding(16)
            .animation(.snappy(duration: 0.3), value: items)
        }
        .navigationDestination(for: KAItem.self) { ItemDetailView(item: $0) }
        .searchable(text: $query, prompt: "Chercher dans \(universe.name)…")
        .onSubmit(of: .search) { Task { await load() } }
        .refreshable { await load() }
        .task {
            await load()
            liveTotal = await UniverseService.liveTotal(universe)
        }
    }

    /// Mise en page MAGAZINE quand l'univers a des photos : vitrine pleine
    /// largeur → carrousel « En vedette » → mosaïque 2 colonnes. Sans photos
    /// (Job·Ka, Trouve·Ka…) : liste éditoriale classique. Sorti·Ka a son
    /// propre rendu : l'AGENDA (sections par horizon temporel).
    @ViewBuilder
    private var magazine: some View {
        if universe.id == "sorti-ka" {
            agenda
        } else {
            magazineBody
        }
    }

    /// L'agenda Sorti·Ka : les événements regroupés par quand ça se passe.
    @ViewBuilder
    private var agenda: some View {
        let groups = Dictionary(grouping: items) { EventBucket.bucket(iso: $0.date) }
        ForEach(EventBucket.allCases.sorted(), id: \.rawValue) { bucket in
            if let group = groups[bucket], !group.isEmpty {
                UniverseSectionHeader(title: bucket.label, accent: universe.accent,
                                      detail: "\(group.count)")
                let visuals = group.filter { $0.imageURL != nil }
                if visuals.count >= 2 {
                    LazyVGrid(columns: [GridItem(.flexible(), spacing: 12),
                                        GridItem(.flexible(), spacing: 12)], spacing: 12) {
                        ForEach(group) { it in
                            NavigationLink(value: it) {
                                UniverseMosaicCell(item: it, universe: universe)
                            }
                            .buttonStyle(KAPressStyle())
                            .kaScrollPop(axis: .vertical)
                        }
                    }
                } else {
                    ForEach(group) { it in
                        NavigationLink(value: it) { KAItemRow(item: it) }
                            .buttonStyle(KAPressStyle())
                            .kaScrollPop(axis: .vertical)
                    }
                }
            }
        }
    }

    @ViewBuilder
    private var magazineBody: some View {
        let visuals = items.filter { $0.imageURL != nil }
        if visuals.count >= 3, let showcase = visuals.first {
            let featured = Array(visuals.dropFirst().prefix(6))
            let usedIDs = Set([showcase.id] + featured.map(\.id))
            let rest = items.filter { !usedIDs.contains($0.id) }

            NavigationLink(value: showcase) {
                UniverseShowcaseCard(item: showcase, universe: universe)
            }
            .buttonStyle(KAPressStyle())
            .kaScrollPop(axis: .vertical)

            if !featured.isEmpty {
                UniverseSectionHeader(title: "En vedette", accent: universe.accent)
                ScrollView(.horizontal, showsIndicators: false) {
                    HStack(spacing: 12) {
                        ForEach(featured) { it in
                            NavigationLink(value: it) {
                                UniverseFeaturedCard(item: it, universe: universe)
                            }
                            .buttonStyle(KAPressStyle())
                            .kaScrollPop()
                        }
                    }
                    .scrollTargetLayout()
                    .padding(.vertical, 4)
                }
                .scrollTargetBehavior(.viewAligned)
            }

            if !rest.isEmpty {
                UniverseSectionHeader(title: "Tout le flux", accent: universe.accent,
                                      detail: "\(rest.count)")
                LazyVGrid(columns: [GridItem(.flexible(), spacing: 12),
                                    GridItem(.flexible(), spacing: 12)], spacing: 12) {
                    ForEach(rest) { it in
                        NavigationLink(value: it) {
                            UniverseMosaicCell(item: it, universe: universe)
                        }
                        .buttonStyle(KAPressStyle())
                        .kaScrollPop(axis: .vertical)
                    }
                }
            }
        } else {
            ForEach(items) { item in
                NavigationLink(value: item) { KAItemRow(item: item) }
                    .buttonStyle(KAPressStyle())
                    .kaScrollPop(axis: .vertical)
            }
        }
    }

    private func load() async {
        loading = items.isEmpty
        errorText = nil
        do {
            items = try await UniverseService.fetch(universe,
                                                    query: query.isEmpty ? nil : query,
                                                    city: cityFilter,
                                                    limit: 40, params: filterParams)
            // top villes mémorisées sur un chargement NON filtré (chips stables)
            if query.isEmpty, cityFilter == nil, filterParams.isEmpty {
                let counts = Dictionary(grouping: items.compactMap(\.city), by: { $0 })
                    .mapValues(\.count)
                cityPool = counts.sorted { $0.value > $1.value }.prefix(8).map(\.key)
            }
        } catch {
            errorText = (error as? URLError)?.code == .notConnectedToInternet
                ? "Vous êtes hors ligne." : "Le service ne répond pas."
        }
        loading = false
    }
}

// MARK: - Fiche universelle

struct ItemDetailView: View {
    let item: KAItem
    @EnvironmentObject private var favorites: FavoritesStore
    @Environment(\.colorScheme) private var scheme
    @State private var showCollections = false
    @State private var menu: [RestoMenuSection] = []
    @State private var similar: [KAItem] = []
    @State private var fullScreenImage: URL?
    /// Fiche COMPLÈTE chargée depuis l'API de détail du site (galerie entière,
    /// description longue, inclusions, caractéristiques, estimation Vrai-Prix…)
    @State private var enriched: KAItem?
    @State private var descExpanded = false
    @EnvironmentObject private var recents: RecentsStore

    private var universe: Universe? { Ecosystem.universe(it.universeID) }
    /// L'item affiché : enrichi dès que l'API de détail répond, sinon la liste.
    private var it: KAItem { enriched ?? item }
    private var accent: Color { universe?.accent ?? KATheme.green }
    @Environment(\.openURL) private var openURL

    /// L'action principale parle la langue de l'univers — pas un générique.
    private var sourceCTA: (label: String, symbol: String) {
        switch it.universeID {
        case "job-ka": return ("Postuler chez l'employeur", "paperplane.fill")
        case "lou-ka": return ("Voir l'annonce du logement", "key.fill")
        case "immo-ka": return ("Voir chez le courtier", "house.fill")
        case "auto-ka": return ("Voir chez le concessionnaire", "car.fill")
        case "resto-ka": return ("Fiche du restaurant", "fork.knife")
        case "sorti-ka": return ("Billets & infos", "ticket.fill")
        case "food-ka": return ("Voir en épicerie", "cart.fill")
        case "fabri-ka": return ("Voir la boutique", "bag.fill")
        default: return ("Voir à la source", "arrow.up.right.square")
        }
    }

    var body: some View {
        ScrollView {
            VStack(alignment: .leading, spacing: 0) {
                if !it.imageURLs.isEmpty { heroGallery }
                contentCard
            }
        }
        .ignoresSafeArea(edges: it.imageURLs.isEmpty ? [] : .top)
        .background(KATheme.paper(scheme))
        .navigationBarTitleDisplayMode(.inline)
        .toolbarBackground(it.imageURLs.isEmpty ? .automatic : .hidden, for: .navigationBar)
        .toolbar {
            ToolbarItem(placement: .topBarTrailing) {
                if let url = it.url {
                    ShareLink(item: url, subject: Text(it.title))
                }
            }
        }
        .safeAreaInset(edge: .bottom) {
            // barre d'action flottante — la safe area étendue du dock la pose
            // automatiquement au-dessus de lui, et le contenu défile net
            stickyBar
                .padding(.horizontal, 12)
                .padding(.bottom, 6)
        }
        .task {
            recents.record(item)
            PersonalizationStore.shared.record(.view, item: item)
            // fiche complète depuis l'API de détail du site (galerie entière,
            // description longue, inclusions, estimation Vrai-Prix, heures…)
            if let u = universe, enriched == nil,
               let full = await DetailService.enrich(item, universe: u) {
                withAnimation(.snappy) { enriched = full }
            }
            if it.universeID == "resto-ka" {
                let uid = String(it.id.dropFirst("resto-ka:".count))
                menu = await RestoMenuLoader.load(uid: uid)
            }
            if let u = universe, u.map != nil, similar.isEmpty {
                let batch = (try? await UniverseService.fetch(u, city: it.city, limit: 10)) ?? []
                similar = batch.filter { $0.id != it.id }.prefix(6).map { $0 }
            }
        }
        .fullScreenCover(item: $fullScreenImage) { img in
            ZoomableImageView(url: img, accent: universe?.accent ?? .gray)
        }
        .confirmationDialog("Ajouter à…", isPresented: $showCollections, titleVisibility: .visible) {
            ForEach(favorites.collections) { c in
                Button(c.name) { favorites.toggle(item, in: c.id) }
            }
        }
        .tint(universe?.accent)
    }

    // MARK: héros photo PLEIN CADRE (jusque sous la barre d'état)

    private var heroGallery: some View {
        TabView {
            ForEach(it.imageURLs, id: \.self) { img in
                KAImage(url: img, accent: universe?.accent ?? .gray, symbol: universe?.symbol ?? "photo")
                    .onTapGesture { Haptics.tap(); fullScreenImage = img }
                    .accessibilityLabel("Photo de \(it.title) — toucher pour agrandir")
                    .accessibilityAddTraits(.isButton)
            }
        }
        .tabViewStyle(.page(indexDisplayMode: .never))
        .frame(height: 400)
        .clipped()
        // scrims : lisibilité du bouton retour en haut, fondu vers la carte en bas
        .overlay(alignment: .top) {
            LinearGradient(colors: [.black.opacity(0.38), .clear],
                           startPoint: .top, endPoint: .bottom)
                .frame(height: 110)
                .allowsHitTesting(false)
        }
        .overlay(alignment: .bottomTrailing) {
            if it.imageURLs.count > 1 {
                Label("\(it.imageURLs.count) photos", systemImage: "photo.stack")
                    .font(.system(size: 10, design: .monospaced).weight(.bold))
                    .padding(.horizontal, 9).padding(.vertical, 5)
                    .background(.ultraThinMaterial, in: Capsule())
                    .padding(.trailing, 14)
                    .padding(.bottom, 44)
            }
        }
    }

    // MARK: barre d'action collante — prix + favori + le geste de l'univers

    @ViewBuilder
    private var stickyBar: some View {
        HStack(spacing: 10) {
            VStack(alignment: .leading, spacing: 1) {
                if let p = it.priceLabel {
                    Text(p)
                        .font(KAFont.display(17))
                        .foregroundStyle(accent)
                        .lineLimit(1)
                        .minimumScaleFactor(0.6)
                } else {
                    Text(universe?.wordmark ?? "KA")
                        .font(KAFont.display(15))
                        .foregroundStyle(KATheme.ink(scheme))
                }
                if let c = it.city {
                    Text(c).font(.caption2).foregroundStyle(.secondary).lineLimit(1)
                }
            }
            Spacer(minLength: 4)
            Button {
                if favorites.isFavorite(item) { favorites.toggle(item) }
                else if favorites.collections.count > 1 { showCollections = true }
                else { favorites.toggle(item) }
            } label: {
                Image(systemName: favorites.isFavorite(item) ? "heart.fill" : "heart")
                    .font(.headline)
                    .foregroundStyle(favorites.isFavorite(item) ? .red : KATheme.ink(scheme))
                    .frame(width: 44, height: 44)
                    .background(KATheme.surface(scheme), in: Circle())
                    .overlay(Circle().strokeBorder(KATheme.ink(scheme).opacity(0.3), lineWidth: 1.2))
            }
            .accessibilityLabel(favorites.isFavorite(item) ? "Retirer des favoris" : "Ajouter aux favoris")
            if let url = it.url {
                Button {
                    Haptics.tap()
                    PersonalizationStore.shared.record(.openSource, item: it)
                    openURL(url)
                } label: {
                    Label(sourceCTA.label, systemImage: sourceCTA.symbol)
                        .font(.subheadline.weight(.bold))
                        .lineLimit(1)
                        .minimumScaleFactor(0.75)
                        .padding(.horizontal, 16)
                        .frame(height: 44)
                        .background(accent, in: Capsule())
                        .foregroundStyle(.white)
                }
                .buttonStyle(KAPressStyle())
            }
        }
        .padding(.horizontal, 12)
        .padding(.vertical, 8)
        .background(KATheme.surface(scheme), in: RoundedRectangle(cornerRadius: 18, style: .continuous))
        .overlay(RoundedRectangle(cornerRadius: 18, style: .continuous)
            .strokeBorder(KATheme.ink(scheme).opacity(scheme == .dark ? 0.4 : 0.85), lineWidth: 1.5))
        .background(RoundedRectangle(cornerRadius: 18, style: .continuous)
            .fill(accent.opacity(scheme == .dark ? 0.4 : 0.95))
            .offset(x: 5, y: 5))
        .shadow(color: .black.opacity(0.15), radius: 12, y: 6)
    }

    // MARK: le contenu, en carte qui chevauche le héros

    private var contentCard: some View {
        VStack(alignment: .leading, spacing: 16) {
                if let u = universe {
                    HStack {
                        KAChip(text: u.wordmark, accent: u.accent)
                        Spacer()
                        if enriched != nil {
                            Text("FICHE COMPLÈTE")
                                .font(KAFont.mono(8))
                                .foregroundStyle(accent)
                                .transition(.opacity)
                        }
                    }
                }
                Text(it.title).font(KAFont.display(23))
                if let sub = it.subtitle, !sub.isEmpty {
                    Text(sub).font(.body).foregroundStyle(KATheme.ink2(scheme))
                }
                HStack(spacing: 10) {
                    if let p = it.priceLabel {
                        Text(p).font(KAFont.display(21))
                            .foregroundStyle(accent)
                    }
                    if let c = it.city { KAChip(text: c) }
                }

                // « En bref » — le digest de la fiche du site
                if let brief = it.brief, !brief.isEmpty {
                    HStack(alignment: .top, spacing: 10) {
                        Rectangle().fill(accent).frame(width: 3)
                        VStack(alignment: .leading, spacing: 4) {
                            Text("EN BREF")
                                .font(KAFont.mono(9))
                                .foregroundStyle(accent)
                            Text(brief)
                                .font(.subheadline)
                                .foregroundStyle(KATheme.ink(scheme))
                        }
                    }
                    .padding(13)
                    .frame(maxWidth: .infinity, alignment: .leading)
                    .background(accent.opacity(scheme == .dark ? 0.14 : 0.08),
                                in: RoundedRectangle(cornerRadius: 12, style: .continuous))
                }

                // étiquettes de la fiche (commodités, inclusions, équipements…)
                if let tags = it.tags, !tags.isEmpty {
                    VStack(alignment: .leading, spacing: 8) {
                        UniverseSectionHeader(title: "Caractéristiques", accent: accent,
                                              detail: "\(tags.count)")
                        KAFlow(spacing: 7) {
                            ForEach(tags, id: \.self) { t in
                                Text(t)
                                    .font(.system(.caption2, design: .rounded, weight: .semibold))
                                    .padding(.horizontal, 10).padding(.vertical, 6)
                                    .background(accent.opacity(0.10), in: Capsule())
                                    .overlay(Capsule().strokeBorder(accent.opacity(0.35), lineWidth: 1))
                                    .foregroundStyle(KATheme.ink(scheme))
                            }
                        }
                    }
                }

                if let detail = it.detail, !detail.isEmpty {
                    VStack(alignment: .leading, spacing: 6) {
                        Text("À propos").font(.headline)
                        Text(detail)
                            .font(.subheadline)
                            .foregroundStyle(KATheme.ink2(scheme))
                            .lineLimit(descExpanded ? nil : 8)
                        if detail.count > 350 {
                            Button {
                                withAnimation(.snappy) { descExpanded.toggle() }
                            } label: {
                                Text(descExpanded ? "Réduire ↑" : "Lire la suite ↓")
                                    .font(KAFont.mono(10))
                                    .foregroundStyle(accent)
                            }
                        }
                    }
                    .padding(14)
                    .frame(maxWidth: .infinity, alignment: .leading)
                    .kaCard()
                }

                // fiche technique — grille 2 colonnes, comme le tableau du site
                if !it.facts.isEmpty {
                    VStack(alignment: .leading, spacing: 8) {
                        UniverseSectionHeader(title: "Détails", accent: accent,
                                              detail: "\(it.facts.count)")
                        LazyVGrid(columns: [GridItem(.flexible(), spacing: 10),
                                            GridItem(.flexible(), spacing: 10)],
                                  alignment: .leading, spacing: 10) {
                            ForEach(it.facts, id: \.self) { f in
                                VStack(alignment: .leading, spacing: 3) {
                                    Text(f.label.uppercased())
                                        .font(KAFont.mono(8))
                                        .foregroundStyle(KATheme.ink2(scheme))
                                        .lineLimit(1)
                                    Text(f.value)
                                        .font(.subheadline.weight(.semibold))
                                        .foregroundStyle(KATheme.ink(scheme))
                                        .lineLimit(3)
                                        .multilineTextAlignment(.leading)
                                }
                                .padding(.horizontal, 11).padding(.vertical, 9)
                                .frame(maxWidth: .infinity, minHeight: 54, alignment: .topLeading)
                                .background(KATheme.surface(scheme),
                                            in: RoundedRectangle(cornerRadius: 10, style: .continuous))
                                .overlay(RoundedRectangle(cornerRadius: 10, style: .continuous)
                                    .strokeBorder(KATheme.ink(scheme).opacity(0.18), lineWidth: 1))
                                .accessibilityElement(children: .combine)
                            }
                        }
                    }
                }

                // localisation sur la carte
                if let la = it.latitude, let lo = it.longitude {
                    VStack(alignment: .leading, spacing: 8) {
                        UniverseSectionHeader(title: "Sur la carte", accent: accent)
                        Map(position: .constant(.region(MKCoordinateRegion(
                            center: .init(latitude: la, longitude: lo),
                            span: .init(latitudeDelta: 0.012, longitudeDelta: 0.012))))) {
                            Marker(it.title, coordinate: .init(latitude: la, longitude: lo))
                                .tint(accent)
                        }
                        .frame(height: 170)
                        .clipShape(RoundedRectangle(cornerRadius: 14, style: .continuous))
                        .overlay(RoundedRectangle(cornerRadius: 14, style: .continuous)
                            .strokeBorder(KATheme.ink(scheme).opacity(0.3), lineWidth: 1.2))
                        .allowsHitTesting(false)
                        .accessibilityLabel("Emplacement de \(it.title) sur la carte")
                    }
                }

                if !it.links.isEmpty {
                    VStack(alignment: .leading, spacing: 8) {
                        Text("Comptes & liens").font(.headline)
                        ForEach(it.links, id: \.self) { l in
                            if let u = URL(string: l.value) {
                                Link(destination: u) {
                                    HStack {
                                        Image(systemName: "link")
                                        Text(l.label).font(.subheadline.weight(.semibold))
                                        Spacer()
                                        Image(systemName: "arrow.up.right").font(.caption)
                                    }
                                    .padding(11)
                                    .background((universe?.accent ?? .gray).opacity(0.1), in: RoundedRectangle(cornerRadius: 10, style: .continuous))
                                }
                                .foregroundStyle(universe?.accent ?? .primary)
                            }
                        }
                    }
                }

                if !menu.isEmpty {
                    VStack(alignment: .leading, spacing: 10) {
                        HStack {
                            Text("Menu & prix réels").font(.headline)
                            Spacer()
                            KAChip(text: "\(menu.reduce(0) { $0 + $1.items.count }) plats", accent: universe?.accent)
                        }
                        ForEach(menu.prefix(6)) { section in
                            DisclosureGroup {
                                VStack(spacing: 0) {
                                    ForEach(section.items, id: \.name) { dish in
                                        HStack(alignment: .top) {
                                            Text(dish.name).font(.subheadline)
                                            Spacer()
                                            if let p = dish.price {
                                                Text(p).font(.system(.subheadline, design: .rounded).weight(.bold))
                                                    .foregroundStyle(universe?.accent ?? .primary)
                                            }
                                        }
                                        .padding(.vertical, 7)
                                        Divider().opacity(dish.name == section.items.last?.name ? 0 : 0.6)
                                    }
                                }
                                .padding(.top, 4)
                            } label: {
                                Text(section.name).font(.subheadline.weight(.bold))
                            }
                            .padding(.horizontal, 14).padding(.vertical, 8)
                            .kaCard()
                        }
                    }
                }

                // hypothèque estimée — l'ADN Immo·Ka (calcul local transparent)
                if it.universeID == "immo-ka", let price = it.price, price > 25_000 {
                    MortgageCard(price: price, accent: accent)
                }

                if let la = it.latitude, let lo = it.longitude {
                    Button {
                        Haptics.tap()
                        let place = MKMapItem(placemark: MKPlacemark(coordinate: .init(latitude: la, longitude: lo)))
                        place.name = it.title
                        place.openInMaps(launchOptions: [MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDefault])
                    } label: {
                        Label("Itinéraire", systemImage: "arrow.triangle.turn.up.right.diamond.fill")
                            .font(.headline)
                            .frame(maxWidth: .infinity).padding(.vertical, 13)
                            .background(KATheme.inkLight, in: RoundedRectangle(cornerRadius: 12, style: .continuous))
                            .foregroundStyle(KATheme.lime)
                    }
                    .accessibilityLabel("Itinéraire vers \(it.title)")
                }
                if let src = it.url?.host() {
                    Text("Source : \(src) — Groupe KA est un agrégateur, la transaction se fait chez la source originale.")
                        .font(.caption2).foregroundStyle(.tertiary)
                }

                if !similar.isEmpty {
                    VStack(alignment: .leading, spacing: 10) {
                        Text("Semblables\(it.city.map { " à \($0)" } ?? "")").font(.headline)
                        ScrollView(.horizontal, showsIndicators: false) {
                            HStack(spacing: 10) {
                                ForEach(similar) { s in
                                    NavigationLink(value: s) {
                                        VStack(alignment: .leading, spacing: 0) {
                                            KAImage(url: s.imageURL, accent: universe?.accent ?? .gray, symbol: universe?.symbol ?? "photo")
                                                .frame(width: 150, height: 84).clipped()
                                            VStack(alignment: .leading, spacing: 2) {
                                                Text(s.title).font(.caption.weight(.semibold))
                                                    .lineLimit(2, reservesSpace: true)
                                                if let p = s.priceLabel {
                                                    Text(p).font(.system(.caption2, design: .rounded).weight(.bold))
                                                        .foregroundStyle(universe?.accent ?? .primary)
                                                }
                                            }
                                            .padding(8)
                                        }
                                        .frame(width: 150, alignment: .topLeading)
                                        .kaCard(accent: universe?.accent)
                                    }
                                    .buttonStyle(KAPressStyle())
                                }
                            }
                            .padding(.vertical, 4)
                        }
                    }
                }
        }
        .padding(16)
        .padding(.top, it.imageURLs.isEmpty ? 0 : 6)
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(KATheme.paper(scheme),
                    in: UnevenRoundedRectangle(topLeadingRadius: 26, topTrailingRadius: 26,
                                               style: .continuous))
        .overlay(alignment: .top) {
            // poignée discrète, façon feuille
            if !it.imageURLs.isEmpty {
                Capsule().fill(.tertiary).frame(width: 38, height: 4).padding(.top, 8)
            }
        }
        .offset(y: it.imageURLs.isEmpty ? 0 : -26)
        .padding(.bottom, it.imageURLs.isEmpty ? 0 : -26)
    }
}