local player = game:GetService("Players").LocalPlayer
local UserInputService = game:GetService("UserInputService")
local Blur = Instance.new("BlurEffect")
local MaxSprint = 100
local SprintDepletion = 0.5
local SprintRegeneration = 0.1
local Sprinting = false
local sprintValue = MaxSprint

Blur.Parent = game:GetService("Lighting")

local ScreenGui = Instance.new("ScreenGui")
ScreenGui.Parent = player.PlayerGui

local SprintBar = Instance.new("Frame")
SprintBar.Parent = ScreenGui
SprintBar.Size = UDim2.new(0.8, 0, 0, 10)
SprintBar.Position = UDim2.new(0.1, 0, 0.9, 0)
SprintBar.BackgroundColor3 = Color3.fromRGB(0, 100, 0)
SprintBar.BorderColor3 = Color3.fromRGB(0, 0, 0)
SprintBar.BorderSizePixel = 1
SprintBar.ZIndex = 10

local SprintBarOverlay = Instance.new("Frame")
SprintBarOverlay.Parent = SprintBar
SprintBarOverlay.Size = UDim2.new(1, 0, 1, 0)
SprintBarOverlay.BackgroundColor3 = Color3.fromRGB(0, 255, 0)
SprintBarOverlay.BorderSizePixel = 0
SprintBarOverlay.ZIndex = 9

local function UpdateSprintBar()
    local sprintPercentage = sprintValue / MaxSprint
    local depletedColor = Color3.fromRGB(200, 255, 200)
    local normalColor = Color3.fromRGB(0, 255, 0)
    SprintBarOverlay.Size = UDim2.new(sprintPercentage, 0, 1, 0)
    SprintBarOverlay.BackgroundColor3 = depletedColor:lerp(normalColor, sprintPercentage)
    if sprintPercentage == 0 then
        Blur.Enabled = true
        player.Character.Humanoid.WalkSpeed = 16
    else
        Blur.Enabled = false
    end
end

local function StartSprinting()
    if sprintValue > 0 and not Sprinting then
        Sprinting = true
        player.Character.Humanoid.WalkSpeed = 32
        UpdateSprintBar()
    end
end

local function StopSprinting()
    if Sprinting then
        Sprinting = false
        player.Character.Humanoid.WalkSpeed = 16
        UpdateSprintBar()
    end
end

UserInputService.InputBegan:Connect(function(input, gameProcessed)
    if not gameProcessed and input.KeyCode == Enum.KeyCode.LeftShift then
        StartSprinting()
    end
end)

UserInputService.InputEnded:Connect(function(input, gameProcessed)
    if not gameProcessed and input.KeyCode == Enum.KeyCode.LeftShift then
        StopSprinting()
    end
end)

while true do
    wait(0.1)
    if Sprinting then
        sprintValue = math.max(0, sprintValue - SprintDepletion)
        UpdateSprintBar()
        if sprintValue <= 0 then
            StopSprinting()
        end
    elseif sprintValue < MaxSprint then
        sprintValue = math.min(MaxSprint, sprintValue + SprintRegeneration)
        UpdateSprintBar()
    end
end