local ScreenGui = Instance.new("ScreenGui")
local MainFrame = Instance.new("Frame")
local Title = Instance.new("TextLabel")
local SpeedInput = Instance.new("TextBox")
local ApplyBtn = Instance.new("TextButton")

-- Setup GUI Properties
ScreenGui.Parent = game:GetService("CoreGui")
ScreenGui.ResetOnSpawn = false

MainFrame.Name = "SpeedChanger"
MainFrame.Parent = ScreenGui
MainFrame.BackgroundColor3 = Color3.fromRGB(45, 45, 45)
MainFrame.Position = UDim2.new(0.5, -100, 0.5, -50)
MainFrame.Size = UDim2.new(0, 200, 0, 100)
MainFrame.Active = true
MainFrame.Draggable = true -- Allows you to move the menu

Title.Parent = MainFrame
Title.Size = UDim2.new(1, 0, 0, 30)
Title.Text = "Speed Changer"
Title.TextColor3 = Color3.fromRGB(255, 255, 255)
Title.BackgroundTransparency = 1

SpeedInput.Parent = MainFrame
SpeedInput.Position = UDim2.new(0.1, 0, 0.4, 0)
SpeedInput.Size = UDim2.new(0.8, 0, 0.25, 0)
SpeedInput.PlaceholderText = "Enter Speed (Default: 16)"
SpeedInput.Text = ""

ApplyBtn.Parent = MainFrame
ApplyBtn.Position = UDim2.new(0.1, 0, 0.7, 0)
ApplyBtn.Size = UDim2.new(0.8, 0, 0.25, 0)
ApplyBtn.Text = "Apply Speed"
ApplyBtn.BackgroundColor3 = Color3.fromRGB(70, 70, 70)
ApplyBtn.TextColor3 = Color3.fromRGB(255, 255, 255)

-- Logic
ApplyBtn.MouseButton1Click:Connect(function()
    local speed = tonumber(SpeedInput.Text)
    if speed then
        game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = speed
    end
end)