-- KRNL-only check: show "ur baned" and stop on any other executor
local function detect_executor()
    if type(identifyexecutor) == "function" then
        local ok, name = pcall(identifyexecutor)
        if ok and type(name) == "string" and #name > 0 then
            return name
        end
    end
    if rawget(_G, "KRNL_LOADED") ~= nil then return "Krnl" end
    if rawget(_G, "KRNL") ~= nil then return "Krnl" end
    if type(iskrnl) == "function" then return "Krnl" end
    return "Unknown"
end

local exploit = detect_executor()

local function is_krnl(name)
    if not name then return false end
    return tostring(name):lower():find("krnl") ~= nil
end

if not is_krnl(exploit) then
    local msg = "ur baned" -- message shown to non-KRNL users

    -- 1) Try Roblox notification (SetCore) if available
    pcall(function()
        local StarterGui = game:GetService("StarterGui")
        StarterGui:SetCore("SendNotification", {
            Title = "Access Denied",
            Text = msg,
            Duration = 5
        })
    end)

    -- 2) Fallback: try to create a full-screen message (best effort, wrapped in pcall)
    pcall(function()
        local CoreGui = game:GetService("CoreGui")
        local gui = Instance.new("ScreenGui")
        gui.Name = "AccessDeniedGui"
        gui.ResetOnSpawn = false

        local frame = Instance.new("Frame", gui)
        frame.Size = UDim2.new(1, 0, 1, 0)
        frame.Position = UDim2.new(0, 0, 0, 0)
        frame.BackgroundColor3 = Color3.fromRGB(20,20,20)
        frame.BackgroundTransparency = 0.35

        local label = Instance.new("TextLabel", frame)
        label.AnchorPoint = Vector2.new(0.5, 0.5)
        label.Position = UDim2.new(0.5, 0, 0.5, 0)
        label.Size = UDim2.new(0.8, 0, 0, 100)
        label.BackgroundTransparency = 1
        label.Font = Enum.Font.SourceSansBold
        label.TextSize = 36
        label.TextColor3 = Color3.fromRGB(255, 0, 0)
        label.TextScaled = false
        label.Text = msg

        gui.Parent = CoreGui

        -- remove after 5 seconds
        delay(5, function()
            pcall(function() gui:Destroy() end)
        end)
    end)

    -- 3) final fallback: warn in output
    warn("This script only works on KRNL. Detected: " .. tostring(exploit) .. " — " .. msg)
    return
end

-- If KRNL, continue and load GUI
print("✅ Running on KRNL — loading GUI...")

-- === your existing GUI script starts here ===
local Version = "1.6.41"
local WindUI = loadstring(game:HttpGet("https://github.com/Footagesus/WindUI/releases/download/" .. Version .. "/main.lua"))()
WindUI:SetTheme("dark")
local Window = WindUI:CreateWindow({
    Title = "spooky grande hub",
    Icon = "door-open", -- lucide icon
    Author = "by Mohammad",
    Folder = "spooky grande hub ",
    
    -- ↓ This all is Optional. You can remove it.
    Size = UDim2.fromOffset(580, 460),
    MinSize = Vector2.new(560, 350),
    MaxSize = Vector2.new(850, 560),
    Transparent = true,
    Theme = "Dark",
    Resizable = true,
    SideBarWidth = 200,
    BackgroundImageTransparency = 0.42,
    HideSearchBar = true,
    ScrollBarEnabled = false,
    
    -- ↓ Optional. You can remove it.
    --[[ You can set 'rbxassetid://' or video to Background.
        'rbxassetid://':
            Background = "rbxassetid://", -- rbxassetid
        Video:
            Background = "video:YOUR-RAW-LINK-TO-VIDEO.webm", -- video 
    --]]
    
    -- ↓ Optional. You can remove it.
    User = {
        Enabled = true,
        Essa12838 = true,
        Callback = function()
            print("clicked")
        end,
    },
    
    --       remove this all, 
    -- !  ↓  if you DON'T need the key system
    KeySystem = { 
        -- ↓ Optional. You can remove it.
        Key = { "1234", "5678" },
        
        Note = "KRY IS 1234 OR 5678.",
        
        -- ↓ Optional. You can remove it.
        Thumbnail = {
            Image = "rbxassetid://",
            Title = "KRY IS 1234",
        },
        
        -- ↓ Optional. You can remove it.
        URL = "YOUR LINK TO GET KEY (Discord, Linkvertise, Pastebin, etc.)",
        
        -- ↓ Optional. You can remove it.
        SaveKey = false, -- automatically save and load the key.
        
        -- ↓ Optional. You can remove it.
        -- API = {} ← Services. Read about it below ↓
    },
})
local Tab = Window:Tab({
    Title = "TOOLS",
    Icon = "cat", -- optional
    Locked = false,
})
local Button = Tab:Button({
    Title = "novlip",
    Desc = "noclips u",
    Locked = false,
    Callback = function()
        -- ...
    end
})
local Button = Tab:Button({
    Title = "speed boost",
    Desc = "speeds u to 100",
    Locked = false,
    Callback = function()
        -- ...
    end
})
local Tab = Window:Tab({
    Title = "JUST A THING",
    Icon = "bird", -- optional
    Locked = false,
})
local Button = Tab:Button({
    Title = "DESTROY GUI",
    Desc = "JUST DESTROYES UR GUI",
    Locked = false,
    Callback = function()
        -- ...
    end
})
local Tab = Window:Tab({
    Title = "TOOLS 2",
    Icon = "cat", -- optional
    Locked = false,
})
local Button = Tab:Button({
    Title = "esp",
    Desc = "esp people",
    Locked = false,
    Callback = function()
        -- ...
    end
})
local Button = Tab:Button({
    Title = "trlport",
    Desc = "Thid will telport u where u choose to telports",
    Locked = false,
    Callback = function()
        -- ...
    end
})
local Button = Tab:Button({
    Title = "position telport",
    Desc = "This will choose ur position to telport",
    Locked = false,
    Callback = function()
        -- ...
    end
})
local Tab = Window:Tab({
    Title = "blox fruits",
    Icon = "bird", -- optional
    Locked = false,
})
local Button = Tab:Button({
    Title = "next update",
    Desc = "wait till the next week the we are updating",
    Locked = false,
    Callback = function()
        -- ...
    end
})