-- Endless Math Quiz with Win Streak (Respawn Safe)

local Players = game:GetService("Players")
local player = Players.LocalPlayer

-- Remove old GUI
local function clearOldGui()
	local oldGui = player.PlayerGui:FindFirstChild("MathQuizGui")
	if oldGui then
		oldGui:Destroy()
	end
end

local function createQuiz()
	clearOldGui()

	local gui = Instance.new("ScreenGui")
	gui.Name = "MathQuizGui"
	gui.ResetOnSpawn = false
	gui.Parent = player.PlayerGui

	-- Open Button
	local openButton = Instance.new("TextButton")
	openButton.Size = UDim2.new(0, 140, 0, 40)
	openButton.Position = UDim2.new(0, 20, 0.5, -20)
	openButton.Text = "Math Quiz"
	openButton.BackgroundColor3 = Color3.fromRGB(50, 200, 50)
	openButton.Parent = gui

	-- Quiz Frame
	local frame = Instance.new("Frame")
	frame.Size = UDim2.new(0, 350, 0, 270)
	frame.Position = UDim2.new(0.5, -175, 0.5, -135)
	frame.BackgroundColor3 = Color3.fromRGB(35, 35, 35)
	frame.Visible = false
	frame.Parent = gui

	-- Close Button
	local closeButton = Instance.new("TextButton")
	closeButton.Size = UDim2.new(0, 30, 0, 30)
	closeButton.Position = UDim2.new(1, -35, 0, 5)
	closeButton.Text = "X"
	closeButton.BackgroundColor3 = Color3.fromRGB(200, 50, 50)
	closeButton.Parent = frame

	-- Win Streak Label
	local streak = 0
	local streakLabel = Instance.new("TextLabel")
	streakLabel.Size = UDim2.new(1, -20, 0, 30)
	streakLabel.Position = UDim2.new(0, 10, 0, 35)
	streakLabel.Text = "Win Streak: 0"
	streakLabel.TextColor3 = Color3.fromRGB(255, 200, 50)
	streakLabel.TextScaled = true
	streakLabel.BackgroundTransparency = 1
	streakLabel.Parent = frame

	-- Question Label
	local questionLabel = Instance.new("TextLabel")
	questionLabel.Size = UDim2.new(1, -20, 0, 50)
	questionLabel.Position = UDim2.new(0, 10, 0, 70)
	questionLabel.TextColor3 = Color3.new(1, 1, 1)
	questionLabel.TextScaled = true
	questionLabel.BackgroundTransparency = 1
	questionLabel.Parent = frame

	-- Answer Buttons
	local buttons = {}
	for i = 1, 4 do
		local btn = Instance.new("TextButton")
		btn.Size = UDim2.new(0.45, 0, 0, 40)
		btn.Position = UDim2.new(
			(i % 2 == 1) and 0.05 or 0.5,
			0,
			(i <= 2) and 0.45 or 0.65,
			0
		)
		btn.BackgroundColor3 = Color3.fromRGB(70, 70, 70)
		btn.TextColor3 = Color3.new(1, 1, 1)
		btn.TextScaled = true
		btn.Parent = frame
		table.insert(buttons, btn)
	end

	-- Quiz Logic
	local correctAnswer = 0

	local function updateStreak()
		streakLabel.Text = "Win Streak: " .. streak
	end

	local function generateQuestion()
		local a = math.random(1, 20)
		local b = math.random(1, 20)
		local ops = {"+", "-", "×"}
		local op = ops[math.random(1, #ops)]

		if op == "+" then
			correctAnswer = a + b
		elseif op == "-" then
			correctAnswer = a - b
		else
			correctAnswer = a * b
		end

		questionLabel.Text = a .. " " .. op .. " " .. b .. " = ?"

		local answers = {}
		answers[math.random(1, 4)] = correctAnswer

		for i = 1, 4 do
			if not answers[i] then
				answers[i] = correctAnswer + math.random(-10, 10)
			end
			buttons[i].Text = tostring(answers[i])
		end
	end

	for _, btn in ipairs(buttons) do
		btn.MouseButton1Click:Connect(function()
			if tonumber(btn.Text) == correctAnswer then
				streak += 1
				btn.BackgroundColor3 = Color3.fromRGB(50, 200, 50)
			else
				streak = 0
				btn.BackgroundColor3 = Color3.fromRGB(200, 50, 50)
			end

			updateStreak()
			task.wait(0.5)

			for _, b in ipairs(buttons) do
				b.BackgroundColor3 = Color3.fromRGB(70, 70, 70)
			end

			generateQuestion()
		end)
	end

	openButton.MouseButton1Click:Connect(function()
		frame.Visible = not frame.Visible
		if frame.Visible then
			generateQuestion()
			updateStreak()
		end
	end)

	closeButton.MouseButton1Click:Connect(function()
		frame.Visible = false
	end)
end

-- Initial create
createQuiz()

-- Recreate after death
player.CharacterAdded:Connect(function()
	task.wait(0.5)
	createQuiz()
end)