-- Services
local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")

local player = Players.LocalPlayer

-- Settings
local DESIRED_SPEED = 50
local DEFAULT_SPEED = 16

-- State
local speedEnabled = false
local guiVisible = true

-- ======================
-- GUI SETUP
-- ======================
local gui = Instance.new("ScreenGui")
gui.Name = "SpeedToggleGui"
gui.ResetOnSpawn = false
gui.Parent = player:WaitForChild("PlayerGui")

local frame = Instance.new("Frame")
frame.Size = UDim2.fromScale(0.2, 0.12)
frame.Position = UDim2.fromScale(0.4, 0.1)
frame.BackgroundColor3 = Color3.fromRGB(30, 30, 30)
frame.Parent = gui

local corner = Instance.new("UICorner")
corner.CornerRadius = UDim.new(0, 12)
corner.Parent = frame

local button = Instance.new("TextButton")
button.Size = UDim2.fromScale(0.9, 0.6)
button.Position = UDim2.fromScale(0.05, 0.2)
button.TextScaled = true
button.Font = Enum.Font.GothamBold
button.TextColor3 = Color3.new(1, 1, 1)
button.Parent = frame

-- ======================
-- FUNCTIONS
-- ======================
local function updateButton()
	if speedEnabled then
		button.Text = "Speed: ON"
		button.BackgroundColor3 = Color3.fromRGB(0, 170, 0)
	else
		button.Text = "Speed: OFF"
		button.BackgroundColor3 = Color3.fromRGB(170, 0, 0)
	end
end

local function applySpeed(humanoid)
	if speedEnabled then
		humanoid.WalkSpeed = DESIRED_SPEED
	else
		humanoid.WalkSpeed = DEFAULT_SPEED
	end
end

local function onCharacterAdded(character)
	local humanoid = character:WaitForChild("Humanoid")

	-- Keep speed enforced
	task.spawn(function()
		while humanoid.Parent do
			applySpeed(humanoid)
			task.wait(0.1)
		end
	end)
end

-- ======================
-- BUTTON TOGGLE
-- ======================
button.MouseButton1Click:Connect(function()
	speedEnabled = not speedEnabled
	updateButton()

	if player.Character then
		local humanoid = player.Character:FindFirstChild("Humanoid")
		if humanoid then
			applySpeed(humanoid)
		end
	end
end)

-- ======================
-- ALT KEY TO HIDE GUI
-- ======================
UserInputService.InputBegan:Connect(function(input, gp)
	if gp then return end

	if input.KeyCode == Enum.KeyCode.LeftAlt or input.KeyCode == Enum.KeyCode.RightAlt then
		guiVisible = not guiVisible
		frame.Visible = guiVisible
	end
end)

-- ======================
-- INIT
-- ======================
updateButton()
player.CharacterAdded:Connect(onCharacterAdded)

if player.Character then
	onCharacterAdded(player.Character)
end