local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local Workspace = game:GetService("Workspace")

local player = Players.LocalPlayer
local playerGui = player:WaitForChild("PlayerGui")

local screenGui = Instance.new("ScreenGui")
screenGui.Name = "NPCHighlighterSystem"
screenGui.ResetOnSpawn = false
screenGui.ZIndexBehavior = Enum.ZIndexBehavior.Sibling
screenGui.Parent = playerGui

local eyeButton = Instance.new("TextButton")
eyeButton.Name = "EyeToggleButton"
eyeButton.Size = UDim2.new(0, 60, 0, 60)
eyeButton.Position = UDim2.new(0.05, 0, 0.4, 0)
eyeButton.BackgroundColor3 = Color3.fromRGB(30, 30, 35)
eyeButton.Text = "👁️"
eyeButton.TextSize = 28
eyeButton.TextColor3 = Color3.fromRGB(255, 255, 255)
eyeButton.Font = Enum.Font.GothamBold
eyeButton.AutoButtonColor = false
eyeButton.Parent = screenGui

local buttonCorner = Instance.new("UICorner")
buttonCorner.CornerRadius = UDim.new(1, 0)
buttonCorner.Parent = eyeButton

local buttonStroke = Instance.new("UIStroke")
buttonStroke.Color = Color3.fromRGB(60, 60, 70)
buttonStroke.Thickness = 2
buttonStroke.Parent = eyeButton

local mainPanel = Instance.new("Frame")
mainPanel.Name = "ControlPanel"
mainPanel.Size = UDim2.new(0, 340, 0, 360)
mainPanel.Position = UDim2.new(0.5, -170, 0.5, -180)
mainPanel.BackgroundColor3 = Color3.fromRGB(20, 20, 25)
mainPanel.Active = true 
mainPanel.Visible = false
mainPanel.Parent = screenGui 

local panelCorner = Instance.new("UICorner")
panelCorner.CornerRadius = UDim.new(0, 12)
panelCorner.Parent = mainPanel

local titleLabel = Instance.new("TextLabel")
titleLabel.Size = UDim2.new(1, 0, 0, 45)
titleLabel.BackgroundTransparency = 1
titleLabel.Text = "NPC HIGHLIGHTER CONTROLS"
titleLabel.TextColor3 = Color3.fromRGB(240, 240, 245)
titleLabel.TextSize = 16
titleLabel.Font = Enum.Font.GothamBold
titleLabel.Parent = mainPanel

local function makeDraggable(guiObject)
    local dragging = false
    local dragInput, dragStart, startPos

    local function update(input)
        local delta = input.Position - dragStart
        local currentCamera = Workspace.CurrentCamera
        if not currentCamera then return end
        
        local screenSize = currentCamera.ViewportSize
        
        local targetX = startPos.X.Offset + delta.X + (startPos.X.Scale * screenSize.X)
        local targetY = startPos.Y.Offset + delta.Y + (startPos.Y.Scale * screenSize.Y)
        
        guiObject.Position = UDim2.new(0, targetX, 0, targetY)
    end

    guiObject.InputBegan:Connect(function(input)
        if input.UserInputType == Enum.UserInputType.MouseButton1 or input.UserInputType == Enum.UserInputType.Touch then
            dragging = true
            dragStart = input.Position
            startPos = guiObject.Position
            
            input.Changed:Connect(function()
                if input.UserInputState == Enum.UserInputState.End then
                    dragging = false
                end
            end)
        end
    end)

    guiObject.InputChanged:Connect(function(input)
        if input.UserInputType == Enum.UserInputType.MouseMovement or input.UserInputType == Enum.UserInputType.Touch then
            dragInput = input
        end
    end)

    UserInputService.InputChanged:Connect(function(input)
        if input == dragInput and dragging then
            update(input)
        end
    end)
end

makeDraggable(eyeButton)
makeDraggable(mainPanel)

local dragDistanceThreshold = 5
local clickStartPos = Vector3.new()

eyeButton.MouseButton1Down:Connect(function()
    clickStartPos = UserInputService:GetMouseLocation()
end)

eyeButton.MouseButton1Up:Connect(function()
    local clickEndPos = UserInputService:GetMouseLocation()
    if (clickStartPos - clickEndPos).Magnitude < dragDistanceThreshold then
        mainPanel.Visible = not mainPanel.Visible
    end
end)

local statusButton = Instance.new("TextButton")
statusButton.Size = UDim2.new(0, 300, 0, 50)
statusButton.Position = UDim2.new(0, 20, 0, 55)
statusButton.BackgroundColor3 = Color3.fromRGB(46, 204, 113)
statusButton.Text = "STATUS: ACTIVE"
statusButton.TextColor3 = Color3.fromRGB(255, 255, 255)
statusButton.Font = Enum.Font.GothamBold
statusButton.TextSize = 14
statusButton.Parent = mainPanel

local statusCorner = Instance.new("UICorner")
statusCorner.CornerRadius = UDim.new(0, 8)
statusCorner.Parent = statusButton

local colorLabel = Instance.new("TextLabel")
colorLabel.Size = UDim2.new(0, 200, 0, 25)
colorLabel.Position = UDim2.new(0, 20, 0, 120)
colorLabel.BackgroundTransparency = 1
colorLabel.Text = "Fill Color Profile:"
colorLabel.TextColor3 = Color3.fromRGB(160, 160, 165)
colorLabel.TextXAlignment = Enum.TextXAlignment.Left
colorLabel.Font = Enum.Font.Gotham
colorLabel.TextSize = 14
colorLabel.Parent = mainPanel

local redBtn = Instance.new("TextButton")
redBtn.Size = UDim2.new(0, 90, 0, 40)
redBtn.Position = UDim2.new(0, 20, 0, 150)
redBtn.BackgroundColor3 = Color3.fromRGB(231, 76, 60)
redBtn.Text = "Red"
redBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
redBtn.Font = Enum.Font.GothamBold
redBtn.TextSize = 14
redBtn.Parent = mainPanel

local rc = Instance.new("UICorner")
rc.CornerRadius = UDim.new(0, 6)
rc.Parent = redBtn

local blueBtn = Instance.new("TextButton")
blueBtn.Size = UDim2.new(0, 90, 0, 40)
blueBtn.Position = UDim2.new(0, 125, 0, 150)
blueBtn.BackgroundColor3 = Color3.fromRGB(52, 152, 219)
blueBtn.Text = "Blue"
blueBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
blueBtn.Font = Enum.Font.GothamBold
blueBtn.TextSize = 14
blueBtn.Parent = mainPanel

local bc = Instance.new("UICorner")
bc.CornerRadius = UDim.new(0, 6)
bc.Parent = blueBtn

local greenBtn = Instance.new("TextButton")
greenBtn.Size = UDim2.new(0, 90, 0, 40)
greenBtn.Position = UDim2.new(0, 230, 0, 150)
greenBtn.BackgroundColor3 = Color3.fromRGB(46, 204, 113)
greenBtn.Text = "Green"
greenBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
greenBtn.Font = Enum.Font.GothamBold
greenBtn.TextSize = 14
greenBtn.Parent = mainPanel

local gc = Instance.new("UICorner")
gc.CornerRadius = UDim.new(0, 6)
gc.Parent = greenBtn

local densityLabel = Instance.new("TextLabel")
densityLabel.Size = UDim2.new(0, 200, 0, 25)
densityLabel.Position = UDim2.new(0, 20, 0, 210)
densityLabel.BackgroundTransparency = 1
densityLabel.Text = "Adjust Glow Density:"
densityLabel.TextColor3 = Color3.fromRGB(160, 160, 165)
densityLabel.TextXAlignment = Enum.TextXAlignment.Left
densityLabel.Font = Enum.Font.Gotham
densityLabel.TextSize = 14
densityLabel.Parent = mainPanel

local solidBtn = Instance.new("TextButton")
solidBtn.Size = UDim2.new(0, 140, 0, 45)
solidBtn.Position = UDim2.new(0, 20, 0, 245)
solidBtn.BackgroundColor3 = Color3.fromRGB(45, 45, 50)
solidBtn.Text = "Solid Glow"
solidBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
solidBtn.Font = Enum.Font.GothamBold
solidBtn.TextSize = 14
solidBtn.Parent = mainPanel

local sc = Instance.new("UICorner")
sc.CornerRadius = UDim.new(0, 8)
sc.Parent = solidBtn

local faintBtn = Instance.new("TextButton")
faintBtn.Size = UDim2.new(0, 140, 0, 45)
faintBtn.Position = UDim2.new(0, 180, 0, 245)
faintBtn.BackgroundColor3 = Color3.fromRGB(45, 45, 50)
faintBtn.Text = "Faint Glow"
faintBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
faintBtn.Font = Enum.Font.GothamBold
faintBtn.TextSize = 14
faintBtn.Parent = mainPanel

local fc = Instance.new("UICorner")
fc.CornerRadius = UDim.new(0, 8)
fc.Parent = faintBtn

local systemActive = true
local currentFillColor = Color3.fromRGB(255, 0, 0)
local activeTransparency = 0.4 

-- Integrated Your Deep-Scan Logic Here
local function updateHighlights()
    for _, item in pairs(Workspace:GetDescendants()) do
        if item:IsA("Humanoid") then
            local parent = item.Parent
            if parent then
                local plr = Players:GetPlayerFromCharacter(parent)
                -- Ensure it is strictly an NPC and not a human player
                if not plr then
                    local highlight = parent:FindFirstChild("HighlighterAsset")
                    
                    if systemActive then
                        if not highlight then
                            highlight = Instance.new("Highlight")
                            highlight.Name = "HighlighterAsset"
                            highlight.OutlineColor = Color3.fromRGB(255, 255, 255)
                            highlight.DepthMode = Enum.HighlightDepthMode.AlwaysOnTop
                            highlight.Parent = parent
                        end
                        highlight.FillColor = currentFillColor
                        highlight.FillTransparency = activeTransparency
                        highlight.Enabled = true
                    else
                        if highlight then highlight.Enabled = false end
                    end
                end
            end
        end
    end
end

local function clearAllHighlights()
    for _, item in pairs(Workspace:GetDescendants()) do
        if item:IsA("Humanoid") then
            local parent = item.Parent
            if parent then
                local highlight = parent:FindFirstChild("HighlighterAsset")
                if highlight then highlight:Destroy() end
            end
        end
    end
end

task.spawn(function()
    while true do
        updateHighlights()
        task.wait(1.0)
    end
end)

Workspace.ChildAdded:Connect(function()
    if systemActive then task.wait(0.2) updateHighlights() end
end)

statusButton.MouseButton1Click:Connect(function()
    systemActive = not systemActive
    if systemActive then
        statusButton.Text = "STATUS: ACTIVE"
        statusButton.BackgroundColor3 = Color3.fromRGB(46, 204, 113)
        updateHighlights()
    else
        statusButton.Text = "STATUS: INACTIVE"
        statusButton.BackgroundColor3 = Color3.fromRGB(231, 76, 60)
        clearAllHighlights()
    end
end)

redBtn.MouseButton1Click:Connect(function() currentFillColor = Color3.fromRGB(255, 0, 0) updateHighlights() end)
blueBtn.MouseButton1Click:Connect(function() currentFillColor = Color3.fromRGB(52, 152, 219) updateHighlights() end)
greenBtn.MouseButton1Click:Connect(function() currentFillColor = Color3.fromRGB(46, 204, 113) updateHighlights() end)
solidBtn.MouseButton1Click:Connect(function() activeTransparency = 0.25 updateHighlights() end)
faintBtn.MouseButton1Click:Connect(function() activeTransparency = 0.85 updateHighlights() end)