-- Ensure the script executes once cleanly
if _G.Old2019MenuLoaded then return else _G.Old2019MenuLoaded = true end

local Players = game:GetService("Players")
local LocalPlayer = Players.LocalPlayer
local GuiService = game:GetService("GuiService")
local SocialService = game:GetService("SocialService")
local UserInputService = game:GetService("UserInputService")

-- 1. CLEAN CORE ENVIRONMENT
local ScreenGui = Instance.new("ScreenGui")
ScreenGui.Name = "ClassicLate2019EscapeMenu"
ScreenGui.ResetOnSpawn = false
ScreenGui.IgnoreGuiInset = true

if syn and syn.protect_gui then syn.protect_gui(ScreenGui) end 
ScreenGui.Parent = game:GetService("CoreGui") or LocalPlayer:WaitForChild("PlayerGui")

-- 2. LATE 2019 FULL SCREEN DARK OVERLAY
local MenuFrame = Instance.new("Frame")
MenuFrame.Name = "EscapeMenuContainer"
MenuFrame.Size = UDim2.new(1, 0, 1, 0)
MenuFrame.BackgroundColor3 = Color3.fromRGB(15, 15, 15)
MenuFrame.BackgroundTransparency = 0.35 -- Exact Late 2019 transparency weight
MenuFrame.Visible = false
MenuFrame.ZIndexBehavior = Enum.ZIndexBehavior.Sibling
MenuFrame.Parent = ScreenGui

-- 3. THE LATE 2019 CENTERED INTERACTION PANEL
local MainPanel = Instance.new("Frame")
MainPanel.Name = "MainPanel"
MainPanel.Size = UDim2.new(0, 420, 0, 260)
MainPanel.Position = UDim2.new(0.5, -210, 0.5, -130)
MainPanel.BackgroundColor3 = Color3.fromRGB(28, 30, 32)
MainPanel.BorderSizePixel = 0
MainPanel.Parent = MenuFrame

-- Sharp corners to mimic the true Late 2019 asset frame layout
local PanelStroke = Instance.new("UIStroke")
PanelStroke.Color = Color3.fromRGB(50, 52, 55)
PanelStroke.Thickness = 1
PanelStroke.Parent = MainPanel

-- 4. TITLE BAR PANEL SECTION
local TitleBar = Instance.new("TextLabel")
TitleBar.Name = "TitleBar"
TitleBar.Size = UDim2.new(1, 0, 0, 45)
TitleBar.BackgroundColor3 = Color3.fromRGB(20, 22, 24)
TitleBar.BorderSizePixel = 0
TitleBar.Text = "  Roblox Menu"
TitleBar.Font = Enum.Font.SourceSansBold
TitleBar.TextSize = 20
TitleBar.TextColor3 = Color3.fromRGB(255, 255, 255)
TitleBar.TextXAlignment = Enum.TextXAlignment.Left
TitleBar.Parent = MainPanel

-- 5. BUTTON VERTICAL LAYOUT CANVAS
local ButtonContainer = Instance.new("Frame")
ButtonContainer.Name = "ButtonContainer"
ButtonContainer.Size = UDim2.new(1, -40, 1, -70)
ButtonContainer.Position = UDim2.new(0, 20, 0, 65)
ButtonContainer.BackgroundTransparency = 1
ButtonContainer.Parent = MainPanel

local Layout = Instance.new("UIListLayout")
Layout.Padding = UDim.new(0, 10)
Layout.HorizontalAlignment = Enum.HorizontalAlignment.Center
Layout.VerticalAlignment = Enum.VerticalAlignment.Center
Layout.Parent = ButtonContainer

-- 6. LATE 2019 STYLED RECTANGULAR BUTTON GENERATOR
local function CreateLate2019Button(name, text, color, parent)
    local Btn = Instance.new("TextButton")
    Btn.Name = name
    Btn.Size = UDim2.new(1, 0, 0, 42)
    Btn.BackgroundColor3 = color
    Btn.BorderSizePixel = 0 -- Perfectly sharp edges (no rounding profiles used in late 2019)
    Btn.Text = text
    Btn.Font = Enum.Font.SourceSansBold
    Btn.TextSize = 16
    Btn.TextColor3 = Color3.fromRGB(255, 255, 255)
    Btn.Parent = parent
    
    -- Subdued button border highlight used during this era
    local BtnStroke = Instance.new("UIStroke")
    BtnStroke.Color = Color3.fromRGB(255, 255, 255)
    BtnStroke.Transparency = 0.85
    BtnStroke.Thickness = 1
    BtnStroke.Parent = Btn
    
    return Btn
end

-- Generate the Late 2019 Menu Option Buttons
local ResumeBtn = CreateLate2019Button("ResumeGame", "Resume Game", Color3.fromRGB(45, 47, 50), ButtonContainer)
local InviteBtn = CreateLate2019Button("InviteFriends", "Invite Friends", Color3.fromRGB(2, 119, 189), ButtonContainer) -- Era slate blue/blue-grey
local LeaveBtn  = CreateLate2019Button("LeaveGame", "Leave Game", Color3.fromRGB(211, 47, 47), ButtonContainer)

-- 7. MENU ACTIONS AND FUNCTIONALITY
local function ToggleMenu()
    MenuFrame.Visible = not MenuFrame.Visible
end

ResumeBtn.MouseButton1Click:Connect(ToggleMenu)

LeaveBtn.MouseButton1Click:Connect(function()
    LocalPlayer:Kick("Disconnected using the Late 2019 Escape Menu wrapper layout.")
end)

-- INTEGRATE ERA-APPROPRIATE NATIVE INVITE PROMPT
InviteBtn.MouseButton1Click:Connect(function()
    ToggleMenu() -- Close background menu overlay
    local success, err = pcall(function()
        SocialService:PromptGameInvite(LocalPlayer)
    end)
end)

-- 8. MOBILE INTERACTION TRIGGER ON-SCREEN
local OpenTrigger = Instance.new("TextButton")
OpenTrigger.Name = "MobileLate2019MenuToggle"
OpenTrigger.Size = UDim2.new(0, 45, 0, 36)
OpenTrigger.Position = UDim2.new(0, 60, 0, 0) -- Placed to prevent UI overlapping on mobile layout
OpenTrigger.BackgroundColor3 = Color3.fromRGB(31, 33, 36)
OpenTrigger.BackgroundTransparency = 0.5
OpenTrigger.Text = "ESC"
OpenTrigger.Font = Enum.Font.SourceSansBold
OpenTrigger.TextSize = 14
OpenTrigger.TextColor3 = Color3.fromRGB(255, 255, 255)
OpenTrigger.BorderSizePixel = 0
OpenTrigger.Parent = ScreenGui

OpenTrigger.MouseButton1Click:Connect(ToggleMenu)

-- PC Back-Compatibility Key Hook
UserInputService.InputBegan:Connect(function(input, processed)
    if input.KeyCode == Enum.KeyCode.Escape then
        GuiService:CloseStatsInterface()
        ToggleMenu()
    end
end)