app_for_indeed/App for Indeed/Controllers/PremiumPlansWindowController.swift

import Cocoa
import StoreKit

final class PremiumPlansWindowController: NSWindowController {
    init() {
        let viewController = PremiumPlansViewController()
        let window = NSWindow(contentViewController: viewController)
        window.title = "Premium Plans"
        window.styleMask = [.titled, .closable, .miniaturizable, .resizable]
        window.styleMask.insert(.fullSizeContentView)
        window.titlebarAppearsTransparent = true
        window.titleVisibility = .hidden
        window.isOpaque = false
        window.backgroundColor = .clear
        window.setContentSize(NSSize(width: 1160, height: 760))
        window.minSize = NSSize(width: 980, height: 680)
        window.center()
        super.init(window: window)

        if let frameView = window.contentView?.superview {
            frameView.wantsLayer = true
            frameView.layer?.cornerRadius = 18
            frameView.layer?.masksToBounds = true
        }
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) {
        nil
    }
}

private final class PremiumPlansViewController: NSViewController {
    private final class HoverPricingCardView: NSView {
        private let baseBorderColor: NSColor
        private let hoverBorderColor: NSColor
        private var trackingAreaRef: NSTrackingArea?

        init(baseBorderColor: NSColor, hoverBorderColor: NSColor) {
            self.baseBorderColor = baseBorderColor
            self.hoverBorderColor = hoverBorderColor
            super.init(frame: .zero)
            wantsLayer = true
            layer?.cornerRadius = 16
            applyHoverStyle(isHovered: false, animated: false)
        }

        @available(*, unavailable)
        required init?(coder: NSCoder) {
            nil
        }

        override func updateTrackingAreas() {
            super.updateTrackingAreas()
            if let trackingAreaRef {
                removeTrackingArea(trackingAreaRef)
            }
            let options: NSTrackingArea.Options = [.activeInActiveApp, .mouseEnteredAndExited, .inVisibleRect]
            let area = NSTrackingArea(rect: .zero, options: options, owner: self, userInfo: nil)
            addTrackingArea(area)
            trackingAreaRef = area
        }

        override func mouseEntered(with event: NSEvent) {
            super.mouseEntered(with: event)
            applyHoverStyle(isHovered: true, animated: true)
        }

        override func mouseExited(with event: NSEvent) {
            super.mouseExited(with: event)
            applyHoverStyle(isHovered: false, animated: true)
        }

        private func applyHoverStyle(isHovered: Bool, animated: Bool) {
            guard let layer else { return }
            let updates = {
                layer.borderWidth = isHovered ? 2 : 1
                layer.borderColor = (isHovered ? self.hoverBorderColor : self.baseBorderColor).cgColor
                layer.shadowColor = self.hoverBorderColor.withAlphaComponent(0.35).cgColor
                layer.shadowOpacity = isHovered ? 0.22 : 0
                layer.shadowRadius = isHovered ? 14 : 0
                layer.shadowOffset = .init(width: 0, height: -2)
            }

            if animated {
                NSAnimationContext.runAnimationGroup { context in
                    context.duration = 0.16
                    updates()
                }
            } else {
                updates()
            }
        }
    }

    private struct Plan {
        let id: String
        let title: String
        let subtitle: String
        let price: String
        let period: String
        let billedPill: String
        let billedLine: String
        let crossedPrice: String?
        let savingsText: String?
        let features: [String]
        let iconName: String
        let iconTint: NSColor
        let highlight: Bool
    }

    private enum Theme {
        static let pageStart = NSColor(srgbRed: 249 / 255, green: 252 / 255, blue: 255 / 255, alpha: 1)
        static let pageEnd = NSColor(srgbRed: 238 / 255, green: 244 / 255, blue: 255 / 255, alpha: 1)
        static let cardBackground = NSColor.white
        static let primaryText = NSColor(srgbRed: 27 / 255, green: 38 / 255, blue: 79 / 255, alpha: 1)
        static let secondaryText = NSColor(srgbRed: 108 / 255, green: 120 / 255, blue: 157 / 255, alpha: 1)
        static let cardBorder = NSColor(srgbRed: 198 / 255, green: 216 / 255, blue: 255 / 255, alpha: 1)
        static let accent = NSColor(srgbRed: 55 / 255, green: 128 / 255, blue: 255 / 255, alpha: 1)
        static let accentHover = NSColor(srgbRed: 38 / 255, green: 108 / 255, blue: 232 / 255, alpha: 1)
        static let mutedButtonFill = NSColor(srgbRed: 238 / 255, green: 243 / 255, blue: 252 / 255, alpha: 1)
        static let bottomStrip = NSColor(srgbRed: 244 / 255, green: 248 / 255, blue: 255 / 255, alpha: 1)
        static let divider = NSColor(srgbRed: 218 / 255, green: 228 / 255, blue: 247 / 255, alpha: 1)
        static let successText = NSColor(srgbRed: 21 / 255, green: 154 / 255, blue: 220 / 255, alpha: 1)
        static let iconTint = NSColor(srgbRed: 47 / 255, green: 136 / 255, blue: 255 / 255, alpha: 1)
    }

    private enum FeatureListMetrics {
        static let spacing = CGFloat(10)
        static let edgeInsets = NSEdgeInsets(top: 21, left: 37, bottom: 21, right: 0)
    }

    private let subscriptionStore = SubscriptionStore.shared
    private var planPriceFields: [String: (price: NSTextField, period: NSTextField)] = [:]
    private var planPurchaseButtons: [String: NSButton] = [:]
    private var subscriptionStatusObservation: NSObjectProtocol?

    private let plans: [Plan] = [
        Plan(
            id: "weekly",
            title: "Weekly",
            subtitle: "Flexible and commitment-free",
            price: "$9.99",
            period: "/ week",
            billedPill: "",
            billedLine: "",
            crossedPrice: nil,
            savingsText: nil,
            features: [
                "All premium features",
                "Perfect for short-term goals",
                "Cancel anytime"
            ],
            iconName: "paperplane.fill",
            iconTint: Theme.iconTint,
            highlight: false
        ),
        Plan(
            id: "monthly",
            title: "Monthly",
            subtitle: "Balanced for regular productivity",
            price: "$19.99",
            period: "/ month",
            billedPill: "",
            billedLine: "",
            crossedPrice: nil,
            savingsText: nil,
            features: [
                "All premium features",
                "Best value for regular users",
                "Priority support"
            ],
            iconName: "bolt.fill",
            iconTint: Theme.accent,
            highlight: true
        ),
        Plan(
            id: "yearly",
            title: "Yearly",
            subtitle: "Best value for long-term users",
            price: "$39.99",
            period: "/ year",
            billedPill: "3 days free trial",
            billedLine: "",
            crossedPrice: nil,
            savingsText: nil,
            features: [
                "All premium features",
                "Lowest effective monthly cost",
                "Ideal for long-term use"
            ],
            iconName: "crown.fill",
            iconTint: Theme.successText,
            highlight: false
        )
    ]

    private let pageGradient = CAGradientLayer()

    deinit {
        if let subscriptionStatusObservation {
            NotificationCenter.default.removeObserver(subscriptionStatusObservation)
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        subscriptionStatusObservation = NotificationCenter.default.addObserver(
            forName: .subscriptionStatusDidChange,
            object: nil,
            queue: .main
        ) { [weak self] _ in
            Task { @MainActor in
                await self?.subscriptionStore.loadProducts()
                self?.applyStorePricing()
            }
        }
        Task { await loadStoreProducts() }
    }

    override func viewDidLayout() {
        super.viewDidLayout()
        pageGradient.frame = view.bounds
    }

    override func loadView() {
        view = NSView()
        view.wantsLayer = true
        view.layer?.cornerRadius = 18
        view.layer?.masksToBounds = true
        pageGradient.colors = [Theme.pageStart.cgColor, Theme.pageEnd.cgColor]
        pageGradient.startPoint = CGPoint(x: 0, y: 1)
        pageGradient.endPoint = CGPoint(x: 1, y: 0)
        view.layer?.addSublayer(pageGradient)
        setupLayout()
    }

    private func setupLayout() {
        let closeButton = NSButton(title: "", target: self, action: #selector(didTapClose))
        closeButton.translatesAutoresizingMaskIntoConstraints = false
        closeButton.isBordered = false
        closeButton.wantsLayer = true
        closeButton.layer?.cornerRadius = 15
        closeButton.layer?.backgroundColor = NSColor.white.withAlphaComponent(0.92).cgColor
        closeButton.layer?.borderWidth = 1
        closeButton.layer?.borderColor = Theme.divider.cgColor
        closeButton.contentTintColor = Theme.secondaryText
        closeButton.image = NSImage(systemSymbolName: "xmark", accessibilityDescription: "Close")
        closeButton.imageScaling = .scaleProportionallyDown
        closeButton.bezelStyle = .regularSquare

        let crownIcon = NSImageView()
        crownIcon.translatesAutoresizingMaskIntoConstraints = false
        crownIcon.symbolConfiguration = NSImage.SymbolConfiguration(pointSize: 18, weight: .semibold)
        crownIcon.image = NSImage(systemSymbolName: "crown.fill", accessibilityDescription: nil)
        crownIcon.contentTintColor = NSColor(srgbRed: 254 / 255, green: 214 / 255, blue: 92 / 255, alpha: 1)

        let title = NSTextField(labelWithString: "Upgrade to Pro")
        title.font = .systemFont(ofSize: 40, weight: .semibold)
        title.textColor = Theme.primaryText
        title.alignment = .center

        let subtitle = NSTextField(labelWithString: "Unlock unlimited access to premium tools and boost your productivity.")
        subtitle.font = .systemFont(ofSize: 14, weight: .regular)
        subtitle.textColor = Theme.secondaryText
        subtitle.alignment = .center

        let cardsRow = NSStackView(views: plans.map(makePricingCard(_:)))
        cardsRow.orientation = .horizontal
        cardsRow.spacing = 14
        cardsRow.alignment = .top
        cardsRow.distribution = .fillEqually
        cardsRow.translatesAutoresizingMaskIntoConstraints = false
        for card in cardsRow.arrangedSubviews {
            card.heightAnchor.constraint(equalTo: cardsRow.heightAnchor).isActive = true
        }

        let trustRow = makeTrustRow()
        let footerRow = makeFooterRow()

        let root = NSStackView(views: [crownIcon, title, subtitle, cardsRow, trustRow, footerRow])
        root.orientation = .vertical
        root.spacing = 18
        root.alignment = .centerX
        root.translatesAutoresizingMaskIntoConstraints = false

        view.addSubview(root)
        view.addSubview(closeButton)
        NSLayoutConstraint.activate([
            root.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 24),
            root.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -24),
            root.topAnchor.constraint(equalTo: view.topAnchor, constant: 20),
            root.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -16),
            closeButton.topAnchor.constraint(equalTo: view.topAnchor, constant: 14),
            closeButton.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -14),
            closeButton.widthAnchor.constraint(equalToConstant: 30),
            closeButton.heightAnchor.constraint(equalToConstant: 30),
            cardsRow.widthAnchor.constraint(equalTo: root.widthAnchor),
            cardsRow.heightAnchor.constraint(equalToConstant: 420),
            trustRow.widthAnchor.constraint(equalTo: root.widthAnchor),
            footerRow.widthAnchor.constraint(equalTo: root.widthAnchor),
            crownIcon.heightAnchor.constraint(equalToConstant: 20)
        ])
    }

    private func makePricingCard(_ plan: Plan) -> NSView {
        let card = HoverPricingCardView(baseBorderColor: Theme.cardBorder, hoverBorderColor: Theme.accent)
        card.translatesAutoresizingMaskIntoConstraints = false
        card.layer?.backgroundColor = Theme.cardBackground.cgColor

        let iconWell = NSView()
        iconWell.translatesAutoresizingMaskIntoConstraints = false
        iconWell.wantsLayer = true
        iconWell.layer?.cornerRadius = 10
        iconWell.layer?.backgroundColor = Theme.bottomStrip.cgColor
        iconWell.widthAnchor.constraint(equalToConstant: 24).isActive = true
        iconWell.heightAnchor.constraint(equalToConstant: 24).isActive = true

        let icon = NSImageView()
        icon.translatesAutoresizingMaskIntoConstraints = false
        icon.symbolConfiguration = NSImage.SymbolConfiguration(pointSize: 11, weight: .bold)
        icon.image = NSImage(systemSymbolName: plan.iconName, accessibilityDescription: nil)
        icon.contentTintColor = plan.iconTint
        iconWell.addSubview(icon)
        NSLayoutConstraint.activate([
            icon.centerXAnchor.constraint(equalTo: iconWell.centerXAnchor),
            icon.centerYAnchor.constraint(equalTo: iconWell.centerYAnchor)
        ])

        let titleLabel = NSTextField(labelWithString: plan.title)
        titleLabel.font = .systemFont(ofSize: 20, weight: .semibold)
        titleLabel.textColor = Theme.primaryText
        titleLabel.alignment = .center

        let subtitleLabel = NSTextField(labelWithString: plan.subtitle)
        subtitleLabel.font = .systemFont(ofSize: 12, weight: .regular)
        subtitleLabel.textColor = Theme.secondaryText
        subtitleLabel.alignment = .center

        let topRightTag = pillLabel(text: plan.billedPill, tint: Theme.bottomStrip, textColor: Theme.iconTint)
        topRightTag.isHidden = plan.billedPill.isEmpty
        topRightTag.font = .systemFont(ofSize: 10, weight: .bold)
        topRightTag.heightAnchor.constraint(equalToConstant: 20).isActive = true

        let priceLabel = NSTextField(labelWithString: plan.price)
        priceLabel.font = .systemFont(ofSize: 18, weight: .semibold)
        priceLabel.textColor = Theme.primaryText

        let periodLabel = NSTextField(labelWithString: plan.period)
        periodLabel.font = .systemFont(ofSize: 13, weight: .medium)
        periodLabel.textColor = Theme.secondaryText

        let priceRow = NSStackView(views: [priceLabel, periodLabel])
        priceRow.orientation = .horizontal
        priceRow.spacing = 4
        priceRow.alignment = .firstBaseline

        let billingLabel = NSTextField(labelWithString: plan.billedLine)
        billingLabel.font = .systemFont(ofSize: 13, weight: .medium)
        billingLabel.textColor = Theme.secondaryText

        let inlinePriceInfo = inlinePriceInfoLabel(oldPrice: plan.crossedPrice, newPrice: plan.savingsText)

        let divider = NSBox()
        divider.boxType = .separator
        divider.translatesAutoresizingMaskIntoConstraints = false
        divider.borderColor = Theme.divider

        let featuresStack = NSStackView(views: plan.features.map(makeFeatureRow(_:)))
        featuresStack.orientation = .vertical
        featuresStack.spacing = FeatureListMetrics.spacing
        featuresStack.alignment = .leading
        featuresStack.edgeInsets = FeatureListMetrics.edgeInsets

        let selectButton = NSButton(title: "Get \(plan.title)", target: self, action: #selector(didTapSelectPlan))
        selectButton.identifier = NSUserInterfaceItemIdentifier(plan.id)
        planPurchaseButtons[plan.id] = selectButton
        planPriceFields[plan.id] = (priceLabel, periodLabel)
        selectButton.isBordered = false
        selectButton.bezelStyle = .rounded
        selectButton.font = .systemFont(ofSize: 14, weight: .semibold)
        selectButton.contentTintColor = plan.highlight ? .white : Theme.primaryText
        selectButton.wantsLayer = true
        selectButton.layer?.cornerRadius = 12
        selectButton.layer?.borderWidth = 1
        selectButton.layer?.borderColor = (plan.highlight ? Theme.accent : Theme.divider).cgColor
        selectButton.layer?.backgroundColor = (plan.highlight
            ? NSColor(srgbRed: 189 / 255, green: 52 / 255, blue: 255 / 255, alpha: 1)
            : Theme.mutedButtonFill).cgColor
        selectButton.translatesAutoresizingMaskIntoConstraints = false
        selectButton.heightAnchor.constraint(equalToConstant: 50).isActive = true

        var contentViews: [NSView] = [iconWell, titleLabel, subtitleLabel, priceRow]
        if !plan.billedLine.isEmpty {
            contentViews.append(billingLabel)
        }
        if plan.crossedPrice != nil, plan.savingsText != nil {
            contentViews.append(inlinePriceInfo)
        }
        contentViews.append(contentsOf: [divider, featuresStack])

        let verticalFlex = NSView()
        verticalFlex.translatesAutoresizingMaskIntoConstraints = false
        verticalFlex.setContentHuggingPriority(.defaultLow, for: .vertical)
        verticalFlex.setContentCompressionResistancePriority(.defaultLow, for: .vertical)

        let column = NSStackView(views: contentViews + [verticalFlex, selectButton])
        column.orientation = .vertical
        column.spacing = 10
        column.alignment = .centerX
        column.distribution = .fill
        column.translatesAutoresizingMaskIntoConstraints = false
        card.addSubview(column)
        card.addSubview(topRightTag)

        NSLayoutConstraint.activate([
            divider.widthAnchor.constraint(equalTo: column.widthAnchor),
            featuresStack.widthAnchor.constraint(equalTo: column.widthAnchor),
            column.leadingAnchor.constraint(equalTo: card.leadingAnchor, constant: 18),
            column.trailingAnchor.constraint(equalTo: card.trailingAnchor, constant: -18),
            column.topAnchor.constraint(equalTo: card.topAnchor, constant: 14),
            column.bottomAnchor.constraint(equalTo: card.bottomAnchor, constant: -12),
            selectButton.widthAnchor.constraint(equalTo: column.widthAnchor),
            topRightTag.topAnchor.constraint(equalTo: card.topAnchor, constant: 12),
            topRightTag.trailingAnchor.constraint(equalTo: card.trailingAnchor, constant: -12)
        ])

        return card
    }

    private func makeFeatureRow(_ text: String) -> NSView {
        let icon = NSImageView()
        icon.translatesAutoresizingMaskIntoConstraints = false
        icon.symbolConfiguration = NSImage.SymbolConfiguration(pointSize: 11, weight: .bold)
        icon.image = NSImage(systemSymbolName: "checkmark.circle.fill", accessibilityDescription: nil)
        icon.contentTintColor = Theme.iconTint
        icon.widthAnchor.constraint(equalToConstant: 14).isActive = true

        let label = NSTextField(labelWithString: text)
        label.font = .systemFont(ofSize: 14, weight: .medium)
        label.textColor = Theme.primaryText

        let row = NSStackView(views: [icon, label])
        row.orientation = .horizontal
        row.spacing = FeatureListMetrics.spacing
        row.alignment = .centerY
        row.distribution = .fill
        return row
    }

    private func inlinePriceInfoLabel(oldPrice: String?, newPrice: String?) -> NSTextField {
        guard let oldPrice, let newPrice else {
            return NSTextField(labelWithString: "")
        }
        let full = NSMutableAttributedString()
        let oldAttributes: [NSAttributedString.Key: Any] = [
            .font: NSFont.systemFont(ofSize: 12, weight: .semibold),
            .foregroundColor: Theme.secondaryText,
            .strikethroughStyle: NSUnderlineStyle.single.rawValue
        ]
        let newAttributes: [NSAttributedString.Key: Any] = [
            .font: NSFont.systemFont(ofSize: 12, weight: .bold),
            .foregroundColor: Theme.successText
        ]
        full.append(NSAttributedString(string: "\(oldPrice)  ", attributes: oldAttributes))
        full.append(NSAttributedString(string: newPrice, attributes: newAttributes))
        let label = NSTextField(labelWithAttributedString: full)
        return label
    }

    private func pillLabel(text: String, tint: NSColor, textColor: NSColor) -> NSTextField {
        let pill = NSTextField(labelWithString: text)
        pill.font = .systemFont(ofSize: 10, weight: .semibold)
        pill.textColor = textColor
        pill.alignment = .center
        pill.wantsLayer = true
        pill.layer?.backgroundColor = tint.cgColor
        pill.layer?.cornerRadius = 9
        pill.translatesAutoresizingMaskIntoConstraints = false
        pill.heightAnchor.constraint(equalToConstant: 18).isActive = true
        pill.widthAnchor.constraint(greaterThanOrEqualToConstant: 95).isActive = true
        return pill
    }

    private func makeTrustRow() -> NSView {
        let badges = NSStackView(views: [
            trustBadge(icon: "shield.fill", title: "Secure Payments", subtitle: "Your payment is 100% secure."),
            trustBadge(icon: "arrow.counterclockwise", title: "Cancel Anytime", subtitle: "No commitment, cancel anytime."),
            trustBadge(icon: "headphones", title: "24/7 Support", subtitle: "We're here to help you anytime."),
            trustBadge(icon: "lock.fill", title: "Privacy First", subtitle: "Your data is safe with us.")
        ])
        badges.orientation = .horizontal
        badges.alignment = .centerY
        badges.distribution = .fillEqually
        badges.spacing = 12
        badges.edgeInsets = NSEdgeInsets(top: 0, left: 8, bottom: 0, right: 8)
        badges.translatesAutoresizingMaskIntoConstraints = false
        badges.wantsLayer = true
        badges.layer?.backgroundColor = Theme.bottomStrip.cgColor
        badges.layer?.borderColor = Theme.divider.cgColor
        badges.layer?.borderWidth = 1
        badges.layer?.cornerRadius = 10
        badges.setHuggingPriority(.defaultLow, for: .horizontal)
        badges.heightAnchor.constraint(equalToConstant: 72).isActive = true
        return badges
    }

    private func makeFooterRow() -> NSView {
        let entries: [(text: String, action: Selector?)] = [
            ("Manage Subscription", #selector(didTapManageSubscription)),
            ("Restore Purchase", #selector(didTapRestorePurchases)),
            ("Privacy Policy", nil),
            ("Terms of Services", nil),
            ("Support", nil)
        ]

        let cells = entries.enumerated().map { index, entry in
            if let action = entry.action {
                return footerActionCell(title: entry.text, action: action, showsTrailingDivider: index < entries.count - 1)
            }
            return footerCell(text: entry.text, showsTrailingDivider: index < entries.count - 1)
        }

        let links = NSStackView(views: cells)
        links.orientation = .horizontal
        links.distribution = .fillEqually
        links.spacing = 0
        links.alignment = .centerY
        links.translatesAutoresizingMaskIntoConstraints = false
        return links
    }

    private func footerActionCell(title: String, action: Selector, showsTrailingDivider: Bool) -> NSView {
        let container = NSView()
        container.translatesAutoresizingMaskIntoConstraints = false

        let button = NSButton(title: title, target: self, action: action)
        button.isBordered = false
        button.bezelStyle = .rounded
        button.font = .systemFont(ofSize: 12, weight: .medium)
        button.contentTintColor = Theme.secondaryText
        button.focusRingType = .none
        button.translatesAutoresizingMaskIntoConstraints = false
        container.addSubview(button)

        var constraints: [NSLayoutConstraint] = [
            button.centerXAnchor.constraint(equalTo: container.centerXAnchor),
            button.centerYAnchor.constraint(equalTo: container.centerYAnchor)
        ]

        if showsTrailingDivider {
            let divider = footerDivider()
            container.addSubview(divider)
            constraints.append(contentsOf: [
                divider.trailingAnchor.constraint(equalTo: container.trailingAnchor),
                divider.centerYAnchor.constraint(equalTo: container.centerYAnchor)
            ])
        }

        NSLayoutConstraint.activate(constraints)
        return container
    }

    private func footerCell(text: String, showsTrailingDivider: Bool) -> NSView {
        let container = NSView()
        container.translatesAutoresizingMaskIntoConstraints = false

        let label = footerLink(text)
        label.translatesAutoresizingMaskIntoConstraints = false
        label.alignment = .center
        container.addSubview(label)

        var constraints = [
            label.centerXAnchor.constraint(equalTo: container.centerXAnchor),
            label.centerYAnchor.constraint(equalTo: container.centerYAnchor)
        ]

        if showsTrailingDivider {
            let divider = footerDivider()
            container.addSubview(divider)
            constraints.append(contentsOf: [
                divider.trailingAnchor.constraint(equalTo: container.trailingAnchor),
                divider.centerYAnchor.constraint(equalTo: container.centerYAnchor)
            ])
        }

        NSLayoutConstraint.activate(constraints)
        return container
    }

    private func trustBadge(icon: String, title: String, subtitle: String) -> NSView {
        let image = NSImageView()
        image.translatesAutoresizingMaskIntoConstraints = false
        image.symbolConfiguration = NSImage.SymbolConfiguration(pointSize: 12, weight: .semibold)
        image.image = NSImage(systemSymbolName: icon, accessibilityDescription: nil)
        image.contentTintColor = Theme.primaryText

        let titleLabel = NSTextField(labelWithString: title)
        titleLabel.font = .systemFont(ofSize: 12, weight: .bold)
        titleLabel.textColor = Theme.primaryText
        let subtitleLabel = NSTextField(labelWithString: subtitle)
        subtitleLabel.font = .systemFont(ofSize: 10, weight: .medium)
        subtitleLabel.textColor = Theme.secondaryText

        let textStack = NSStackView(views: [titleLabel, subtitleLabel])
        textStack.orientation = .vertical
        textStack.spacing = 2
        textStack.alignment = .leading

        let stack = NSStackView(views: [image, textStack])
        stack.orientation = .horizontal
        stack.spacing = 8
        stack.alignment = .leading
        stack.edgeInsets = NSEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
        stack.wantsLayer = true
        stack.layer?.backgroundColor = NSColor.clear.cgColor
        return stack
    }

    private func footerLink(_ text: String) -> NSTextField {
        let label = NSTextField(labelWithString: text)
        label.font = .systemFont(ofSize: 12, weight: .medium)
        label.textColor = Theme.secondaryText
        return label
    }

    private func footerDivider() -> NSBox {
        let divider = NSBox()
        divider.boxType = .separator
        divider.borderColor = Theme.divider
        divider.translatesAutoresizingMaskIntoConstraints = false
        divider.widthAnchor.constraint(equalToConstant: 1).isActive = true
        divider.heightAnchor.constraint(equalToConstant: 14).isActive = true
        return divider
    }

    @objc private func didTapSelectPlan(_ sender: NSButton) {
        guard let planKey = sender.identifier?.rawValue else { return }
        Task { await purchasePlan(planKey: planKey) }
    }

    @objc private func didTapManageSubscription() {
        guard let url = URL(string: "https://apps.apple.com/account/subscriptions") else { return }
        NSWorkspace.shared.open(url)
    }

    @objc private func didTapRestorePurchases() {
        Task { await restorePurchases() }
    }

    private func loadStoreProducts() async {
        await subscriptionStore.loadProducts()
        applyStorePricing()
    }

    private func applyStorePricing() {
        for plan in plans {
            guard let fields = planPriceFields[plan.id],
                  let product = subscriptionStore.product(forPlanKey: plan.id) else { continue }
            fields.price.stringValue = product.displayPrice
            if let period = product.subscription?.subscriptionPeriod {
                fields.period.stringValue = periodSuffix(for: period)
            }
        }
    }

    private func periodSuffix(for period: Product.SubscriptionPeriod) -> String {
        let value = period.value
        switch period.unit {
        case .day: return value == 1 ? "/ day" : "/ \(value) days"
        case .week: return value == 1 ? "/ week" : "/ \(value) weeks"
        case .month: return value == 1 ? "/ month" : "/ \(value) months"
        case .year: return value == 1 ? "/ year" : "/ \(value) years"
        @unknown default: return ""
        }
    }

    private func setPurchasing(_ isPurchasing: Bool) {
        for button in planPurchaseButtons.values {
            button.isEnabled = !isPurchasing
        }
    }

    private func purchasePlan(planKey: String) async {
        setPurchasing(true)
        defer { setPurchasing(false) }
        do {
            let completed = try await subscriptionStore.purchase(planKey: planKey)
            guard completed else { return }
            let alert = NSAlert()
            alert.messageText = "You're subscribed"
            alert.informativeText = "Thank you — Pro features are now available."
            alert.alertStyle = .informational
            alert.addButton(withTitle: "OK")
            if let window = view.window {
                alert.beginSheetModal(for: window) { [weak self] _ in
                    self?.dismissPremiumSheetFromParentIfNeeded()
                }
            } else {
                alert.runModal()
                dismissPremiumSheetFromParentIfNeeded()
            }
        } catch {
            await MainActor.run {
                self.presentPurchaseError(error)
            }
        }
    }

    private func restorePurchases() async {
        setPurchasing(true)
        defer { setPurchasing(false) }
        do {
            try await subscriptionStore.restorePurchases()
            let active = subscriptionStore.isProActive
            let alert = NSAlert()
            if active {
                alert.messageText = "Purchases restored"
                alert.informativeText = "Your subscription is active."
            } else {
                alert.messageText = "No subscription found"
                alert.informativeText = "There was nothing to restore for this Apple ID."
            }
            alert.alertStyle = .informational
            alert.addButton(withTitle: "OK")
            if let window = view.window {
                alert.beginSheetModal(for: window) { [weak self] _ in
                    if active {
                        self?.dismissPremiumSheetFromParentIfNeeded()
                    }
                }
            } else {
                alert.runModal()
                if active {
                    dismissPremiumSheetFromParentIfNeeded()
                }
            }
        } catch {
            await MainActor.run {
                self.presentPurchaseError(error)
            }
        }
    }

    private func presentPurchaseError(_ error: Error) {
        let alert = NSAlert()
        alert.messageText = "Something went wrong"
        if let localized = error as? LocalizedError {
            var parts: [String] = []
            if let description = localized.errorDescription {
                parts.append(description)
            }
            if let recovery = localized.recoverySuggestion {
                parts.append(recovery)
            }
            alert.informativeText = parts.isEmpty ? error.localizedDescription : parts.joined(separator: "\n\n")
        } else {
            alert.informativeText = error.localizedDescription
        }
        alert.alertStyle = .warning
        alert.addButton(withTitle: "OK")
        if let window = view.window {
            alert.beginSheetModal(for: window)
        } else {
            alert.runModal()
        }
    }

    private func dismissPremiumSheetFromParentIfNeeded() {
        guard let sheet = view.window, let parent = sheet.sheetParent else { return }
        parent.endSheet(sheet)
    }

    @objc private func didTapClose() {
        guard let window = view.window else { return }
        if let parent = window.sheetParent {
            parent.endSheet(window)
            return
        }
        window.close()
    }
}