local Players = game:GetService("Players")
local UIS = game:GetService("UserInputService")
local RS = game:GetService("RunService")
local Workspace = game:GetService("Workspace")

local plr = Players.LocalPlayer
local char = plr.Character or plr.CharacterAdded:Wait()
local rootPart = char:WaitForChild("HumanoidRootPart")

local STATE = {
    flying = false,
    noclip = false,
    antiSit = false,
    speed = 10,
    minimized = false
}

local dirs = {
    fwd = 0, bwd = 0,
    left = 0, right = 0,
    down = 0, up = 0
}

local lastDirs = {
    fwd = 0, bwd = 0,
    left = 0, right = 0,
    down = 0, up = 0
}

local connections = {
    noclip = nil,
    antiSit = {}
}

local GUI_CONFIG = {
    frameSize = Vector2.new(180, 225),
    frameSizeMin = Vector2.new(180, 70),
    colors = {
        main = Color3.fromRGB(230, 210, 240),
        header = Color3.fromRGB(200, 180, 220),
        title = Color3.fromRGB(210, 190, 230),
        activeOn = Color3.fromRGB(120, 220, 120),
        activeOff = Color3.fromRGB(80, 60, 90)
    }
}

local function createGui()
    local gui = Instance.new("ScreenGui")
    gui.Name = "NFly"
    gui.Parent = game.CoreGui
    gui.ZIndexBehavior = Enum.ZIndexBehavior.Sibling
    
    local frame = Instance.new("Frame", gui)
    frame.Name = "MainFrame"
    frame.BackgroundColor3 = GUI_CONFIG.colors.main
    frame.BorderSizePixel = 0
    frame.Position = UDim2.new(0.195678264, 0, 0.562977076, 0)
    frame.Size = UDim2.new(0, GUI_CONFIG.frameSize.X, 0, GUI_CONFIG.frameSize.Y)
    
    local corner = Instance.new("UICorner", frame)
    corner.CornerRadius = UDim.new(0, 6)
    
    return gui, frame
end

local function createTitleBar(parent)
    local titleBar = Instance.new("Frame", parent)
    titleBar.Name = "TitleBar"
    titleBar.BackgroundColor3 = GUI_CONFIG.colors.title
    titleBar.BorderSizePixel = 0
    titleBar.Size = UDim2.new(1, 0, 0, 35)
    
    local titleCorner = Instance.new("UICorner", titleBar)
    titleCorner.CornerRadius = UDim.new(0, 6)
    
    local titleLbl = Instance.new("TextLabel", titleBar)
    titleLbl.Name = "Title"
    titleLbl.BackgroundTransparency = 1
    titleLbl.Size = UDim2.new(1, 0, 1, 0)
    titleLbl.Font = Enum.Font.SourceSansBold
    titleLbl.Text = "Nfly Gui V1"
    titleLbl.TextColor3 = Color3.fromRGB(50, 50, 50)
    titleLbl.TextSize = 18
    titleLbl.TextXAlignment = Enum.TextXAlignment.Center
    titleLbl.TextYAlignment = Enum.TextYAlignment.Center
    
    return titleBar
end

local function createHeader(parent)
    local hdr = Instance.new("Frame", parent)
    hdr.Name = "Header"
    hdr.BackgroundColor3 = GUI_CONFIG.colors.header
    hdr.BorderSizePixel = 0
    hdr.Position = UDim2.new(0, 0, 0, 35)
    hdr.Size = UDim2.new(1, 0, 0, 35)
    
    local closeBtn = Instance.new("TextButton", hdr)
    closeBtn.Name = "Close"
    closeBtn.BackgroundColor3 = Color3.fromRGB(180, 140, 200)
    closeBtn.BorderSizePixel = 0
    closeBtn.Position = UDim2.new(0, 0, 0, 0)
    closeBtn.Size = UDim2.new(0, 30, 0, 35)
    closeBtn.Font = Enum.Font.SourceSansBold
    closeBtn.Text = "X"
    closeBtn.TextColor3 = Color3.fromRGB(50, 50, 50)
    closeBtn.TextSize = 20
    
    local minBtn = Instance.new("TextButton", hdr)
    minBtn.Name = "Minimize"
    minBtn.BackgroundColor3 = Color3.fromRGB(190, 150, 210)
    minBtn.BorderSizePixel = 0
    minBtn.Position = UDim2.new(0, 30, 0, 0)
    minBtn.Size = UDim2.new(0, 30, 0, 35)
    minBtn.Font = Enum.Font.SourceSansBold
    minBtn.Text = "-"
    minBtn.TextColor3 = Color3.fromRGB(50, 50, 50)
    minBtn.TextSize = 20
    
    local noclipBtn = Instance.new("TextButton", hdr)
    noclipBtn.Name = "NoclipToggle"
    noclipBtn.BackgroundColor3 = GUI_CONFIG.colors.activeOff
    noclipBtn.BorderSizePixel = 0
    noclipBtn.Position = UDim2.new(0, 60, 0, 0)
    noclipBtn.Size = UDim2.new(1, -60, 1, 0)
    noclipBtn.Font = Enum.Font.SourceSansBold
    noclipBtn.Text = "Noclip: OFF"
    noclipBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
    noclipBtn.TextSize = 16
    
    return hdr, closeBtn, minBtn, noclipBtn
end

local function createControls(parent)
    local controls = {}
    
    controls.toggleBtn = Instance.new("TextButton", parent)
    controls.toggleBtn.Name = "ToggleFly"
    controls.toggleBtn.BackgroundColor3 = Color3.fromRGB(220, 200, 240)
    controls.toggleBtn.BorderSizePixel = 0
    controls.toggleBtn.Position = UDim2.new(0, 0, 0, 70)
    controls.toggleBtn.Size = UDim2.new(0.5, 0, 0, 50)
    controls.toggleBtn.Font = Enum.Font.SourceSansBold
    controls.toggleBtn.Text = "Start"
    controls.toggleBtn.TextColor3 = Color3.fromRGB(50, 50, 50)
    controls.toggleBtn.TextSize = 24
    
    controls.speedBox = Instance.new("TextBox", parent)
    controls.speedBox.Name = "SpeedInput"
    controls.speedBox.BackgroundColor3 = Color3.fromRGB(240, 220, 250)
    controls.speedBox.BorderSizePixel = 0
    controls.speedBox.Position = UDim2.new(0.5, 0, 0, 70)
    controls.speedBox.Size = UDim2.new(0.5, 0, 0, 50)
    controls.speedBox.Font = Enum.Font.SourceSansBold
    controls.speedBox.Text = "10"
    controls.speedBox.TextColor3 = Color3.fromRGB(50, 50, 50)
    controls.speedBox.TextSize = 20
    controls.speedBox.ClearTextOnFocus = false
    
    local speedBtns = {
        {name = "Inc1", text = "+1", pos = 0, color = Color3.fromRGB(210, 180, 230)},
        {name = "Inc10", text = "+10", pos = 0.25, color = Color3.fromRGB(210, 180, 230)},
        {name = "Dec1", text = "-1", pos = 0.5, color = Color3.fromRGB(200, 170, 220)},
        {name = "Dec10", text = "-10", pos = 0.75, color = Color3.fromRGB(200, 170, 220)}
    }
    
    for _, config in ipairs(speedBtns) do
        local btn = Instance.new("TextButton", parent)
        btn.Name = config.name
        btn.BackgroundColor3 = config.color
        btn.BorderSizePixel = 0
        btn.Position = UDim2.new(config.pos, 0, 0, 120)
        btn.Size = UDim2.new(0.25, 0, 0, 35)
        btn.Font = Enum.Font.SourceSansBold
        btn.Text = config.text
        btn.TextColor3 = Color3.fromRGB(50, 50, 50)
        btn.TextSize = 20
        controls[config.name:lower()] = btn
    end
    
    controls.upBtn = Instance.new("TextButton", parent)
    controls.upBtn.Name = "Up"
    controls.upBtn.BackgroundColor3 = Color3.fromRGB(220, 190, 240)
    controls.upBtn.BorderSizePixel = 0
    controls.upBtn.Position = UDim2.new(0, 0, 0, 155)
    controls.upBtn.Size = UDim2.new(0.5, 0, 0, 35)
    controls.upBtn.Font = Enum.Font.SourceSansBold
    controls.upBtn.Text = "↑"
    controls.upBtn.TextColor3 = Color3.fromRGB(50, 50, 50)
    controls.upBtn.TextSize = 28
    
    controls.downBtn = Instance.new("TextButton", parent)
    controls.downBtn.Name = "Down"
    controls.downBtn.BackgroundColor3 = Color3.fromRGB(230, 200, 250)
    controls.downBtn.BorderSizePixel = 0
    controls.downBtn.Position = UDim2.new(0.5, 0, 0, 155)
    controls.downBtn.Size = UDim2.new(0.5, 0, 0, 35)
    controls.downBtn.Font = Enum.Font.SourceSansBold
    controls.downBtn.Text = "↓"
    controls.downBtn.TextColor3 = Color3.fromRGB(50, 50, 50)
    controls.downBtn.TextSize = 28
    
    controls.antiSitBtn = Instance.new("TextButton", parent)
    controls.antiSitBtn.Name = "AntiSitToggle"
    controls.antiSitBtn.BackgroundColor3 = GUI_CONFIG.colors.activeOff
    controls.antiSitBtn.BorderSizePixel = 0
    controls.antiSitBtn.Position = UDim2.new(0, 0, 0, 190)
    controls.antiSitBtn.Size = UDim2.new(1, 0, 0, 35)
    controls.antiSitBtn.Font = Enum.Font.SourceSansBold
    controls.antiSitBtn.Text = "Anti Sit - Anti Bring: OFF"
    controls.antiSitBtn.TextColor3 = Color3.fromRGB(255, 255, 255)
    controls.antiSitBtn.TextSize = 14
    
    return controls
end

local function updateSpeed()
    return tostring(STATE.speed)
end

local function initFly()
    STATE.flying = true
    local gyro = Instance.new("BodyGyro")
    local velo = Instance.new("BodyVelocity")
    
    gyro.P = 9e4
    gyro.MaxTorque = Vector3.new(9e9, 9e9, 9e9)
    gyro.CFrame = workspace.CurrentCamera.CFrame
    gyro.Parent = rootPart
    
    velo.Velocity = Vector3.zero
    velo.MaxForce = Vector3.new(9e9, 9e9, 9e9)
    velo.Parent = rootPart
    
    task.spawn(function()
        while STATE.flying do
            task.wait()
            local hum = char:FindFirstChildOfClass("Humanoid")
            if hum then hum.PlatformStand = true end
            
            if (dirs.left + dirs.right) ~= 0 or (dirs.fwd + dirs.bwd) ~= 0 or (dirs.down + dirs.up) ~= 0 then
                lastDirs = {
                    fwd = dirs.fwd, bwd = dirs.bwd,
                    left = dirs.left, right = dirs.right,
                    down = dirs.down, up = dirs.up
                }
            end
            
            local cam = workspace.CurrentCamera
            local fwdVec = cam.CFrame.LookVector * (dirs.fwd + dirs.bwd)
            local rightVec = cam.CFrame.RightVector * (dirs.left + dirs.right)
            local upVec = Vector3.new(0, -(dirs.down + dirs.up), 0)
            
            local isMoving = (dirs.left + dirs.right) ~= 0 or 
                           (dirs.fwd + dirs.bwd) ~= 0 or 
                           (dirs.down + dirs.up) ~= 0
            
            velo.Velocity = (fwdVec + rightVec + upVec) * (isMoving and STATE.speed or 0)
            gyro.CFrame = cam.CFrame
        end
        
        dirs = {fwd = 0, bwd = 0, left = 0, right = 0, down = 0, up = 0}
        lastDirs = {fwd = 0, bwd = 0, left = 0, right = 0, down = 0, up = 0}
        gyro:Destroy()
        velo:Destroy()
        local hum = char:FindFirstChildOfClass("Humanoid")
        if hum then hum.PlatformStand = false end
    end)
end

local function toggleNoclip(btn)
    STATE.noclip = not STATE.noclip
    
    if STATE.noclip then
        btn.Text = "Noclip: ON"
        btn.BackgroundColor3 = GUI_CONFIG.colors.activeOn
        btn.TextColor3 = Color3.fromRGB(20, 20, 20)
        
        connections.noclip = RS.Stepped:Connect(function()
            pcall(function()
                for _, part in pairs(plr.Character:GetDescendants()) do
                    if part:IsA("BasePart") then
                        part.CanCollide = false
                    end
                end
            end)
        end)
    else
        btn.Text = "Noclip: OFF"
        btn.BackgroundColor3 = GUI_CONFIG.colors.activeOff
        btn.TextColor3 = Color3.fromRGB(255, 255, 255)
        
        if connections.noclip then
            connections.noclip:Disconnect()
            connections.noclip = nil
        end
        
        pcall(function()
            for _, part in pairs(plr.Character:GetDescendants()) do
                if part:IsA("BasePart") then
                    part.CanCollide = true
                end
            end
        end)
    end
end

local function neutralizeSeat(seat)
    if seat:IsA("Seat") or seat:IsA("VehicleSeat") then
        seat.Disabled = true
        seat.CanTouch = false
        seat:SetAttribute("Neutralized", true)
    end
end

local function toggleAntiSit(btn)
    STATE.antiSit = not STATE.antiSit
    
    if STATE.antiSit then
        btn.Text = "Anti Sit - Anti Bring: ON"
        btn.BackgroundColor3 = GUI_CONFIG.colors.activeOn
        btn.TextColor3 = Color3.fromRGB(20, 20, 20)
        
        for _, obj in ipairs(Workspace:GetDescendants()) do
            neutralizeSeat(obj)
        end
        
        connections.antiSit.descendant = Workspace.DescendantAdded:Connect(function(obj)
            if STATE.antiSit and (obj:IsA("Seat") or obj:IsA("VehicleSeat")) then
                task.wait(0.1)
                neutralizeSeat(obj)
            end
        end)
        
        connections.antiSit.character = plr.CharacterAdded:Connect(function(newChar)
            if STATE.antiSit then
                local humanoid = newChar:WaitForChild("Humanoid")
                connections.antiSit.sit = humanoid:GetPropertyChangedSignal("Sit"):Connect(function()
                    if STATE.antiSit and humanoid.Sit then
                        humanoid.Sit = false
                    end
                end)
            end
        end)
        
        if char then
            local humanoid = char:FindFirstChildOfClass("Humanoid")
            if humanoid then
                connections.antiSit.sit = humanoid:GetPropertyChangedSignal("Sit"):Connect(function()
                    if STATE.antiSit and humanoid.Sit then
                        humanoid.Sit = false
                    end
                end)
            end
        end
    else
        btn.Text = "Anti Sit - Anti Bring: OFF"
        btn.BackgroundColor3 = GUI_CONFIG.colors.activeOff
        btn.TextColor3 = Color3.fromRGB(255, 255, 255)
        
        for _, conn in pairs(connections.antiSit) do
            if conn then conn:Disconnect() end
        end
        connections.antiSit = {}
        
        for _, obj in ipairs(Workspace:GetDescendants()) do
            if (obj:IsA("Seat") or obj:IsA("VehicleSeat")) and obj:GetAttribute("Neutralized") then
                obj.Disabled = false
                obj.CanTouch = true
                obj:SetAttribute("Neutralized", nil)
            end
        end
    end
end

local function setupInputHandlers()
    UIS.InputBegan:Connect(function(inp, proc)
        if proc then return end
        local kc = inp.KeyCode
        
        if kc == Enum.KeyCode.W then dirs.fwd = 1
        elseif kc == Enum.KeyCode.S then dirs.bwd = -1
        elseif kc == Enum.KeyCode.A then dirs.left = -1
        elseif kc == Enum.KeyCode.D then dirs.right = 1
        elseif kc == Enum.KeyCode.Q then dirs.down = 1
        elseif kc == Enum.KeyCode.E then dirs.up = -1
        end
    end)
    
    UIS.InputEnded:Connect(function(inp, proc)
        if proc then return end
        local kc = inp.KeyCode
        
        if kc == Enum.KeyCode.W then dirs.fwd = 0
        elseif kc == Enum.KeyCode.S then dirs.bwd = 0
        elseif kc == Enum.KeyCode.A then dirs.left = 0
        elseif kc == Enum.KeyCode.D then dirs.right = 0
        elseif kc == Enum.KeyCode.Q then dirs.down = 0
        elseif kc == Enum.KeyCode.E then dirs.up = 0
        end
    end)
end

local function setupDragging(titleBar, hdr, frame)
    local dragActive, dragPos, startPos
    
    local function updatePos(input)
        local delta = input.Position - dragPos
        frame.Position = UDim2.new(
            startPos.X.Scale, startPos.X.Offset + delta.X,
            startPos.Y.Scale, startPos.Y.Offset + delta.Y
        )
    end
    
    local function handleInput(element)
        element.InputBegan:Connect(function(input)
            if input.UserInputType == Enum.UserInputType.MouseButton1 or 
               input.UserInputType == Enum.UserInputType.Touch then
                dragActive = true
                dragPos = input.Position
                startPos = frame.Position
                input.Changed:Connect(function()
                    if input.UserInputState == Enum.UserInputState.End then
                        dragActive = false
                    end
                end)
            end
        end)
        
        element.InputChanged:Connect(function(input)
            if dragActive and (input.UserInputType == Enum.UserInputType.MouseMovement or 
                             input.UserInputType == Enum.UserInputType.Touch) then
                updatePos(input)
            end
        end)
    end
    
    handleInput(titleBar)
    handleInput(hdr)
end

local function setupButtonHandlers(controls, frame, gui)
    controls.toggleBtn.MouseButton1Click:Connect(function()
        if not STATE.flying then
            char = plr.Character or plr.CharacterAdded:Wait()
            rootPart = char:WaitForChild("HumanoidRootPart")
            initFly()
            controls.toggleBtn.Text = "Stop"
        else
            STATE.flying = false
            controls.toggleBtn.Text = "Start"
        end
    end)
    
    controls.inc1.MouseButton1Click:Connect(function()
        STATE.speed = math.min(STATE.speed + 1, 10000)
        controls.speedBox.Text = updateSpeed()
    end)
    
    controls.inc10.MouseButton1Click:Connect(function()
        STATE.speed = math.min(STATE.speed + 10, 10000)
        controls.speedBox.Text = updateSpeed()
    end)
    
    controls.dec1.MouseButton1Click:Connect(function()
        STATE.speed = math.max(STATE.speed - 1, 10)
        controls.speedBox.Text = updateSpeed()
    end)
    
    controls.dec10.MouseButton1Click:Connect(function()
        STATE.speed = math.max(STATE.speed - 10, 10)
        controls.speedBox.Text = updateSpeed()
    end)
    
    controls.upBtn.MouseButton1Down:Connect(function() dirs.up = -1 end)
    controls.upBtn.MouseButton1Up:Connect(function() dirs.up = 0 end)
    
    controls.downBtn.MouseButton1Down:Connect(function() dirs.down = 1 end)
    controls.downBtn.MouseButton1Up:Connect(function() dirs.down = 0 end)
    
    controls.speedBox.FocusLost:Connect(function(enter)
        if enter then
            local num = tonumber(controls.speedBox.Text)
            if num then
                STATE.speed = math.clamp(num, 10, 10000)
                controls.speedBox.Text = updateSpeed()
            else
                controls.speedBox.Text = updateSpeed()
            end
        end
    end)
end

local function setupWindowControls(closeBtn, minBtn, controls, frame, gui)
    closeBtn.MouseButton1Click:Connect(function()
        gui.Enabled = false
    end)
    
    minBtn.MouseButton1Click:Connect(function()
        STATE.minimized = not STATE.minimized
        
        controls.toggleBtn.Visible = not STATE.minimized
        controls.speedBox.Visible = not STATE.minimized
        controls.inc1.Visible = not STATE.minimized
        controls.inc10.Visible = not STATE.minimized
        controls.dec1.Visible = not STATE.minimized
        controls.dec10.Visible = not STATE.minimized
        controls.upBtn.Visible = not STATE.minimized
        controls.downBtn.Visible = not STATE.minimized
        controls.antiSitBtn.Visible = not STATE.minimized
        
        frame.Size = STATE.minimized and 
            UDim2.new(0, GUI_CONFIG.frameSizeMin.X, 0, GUI_CONFIG.frameSizeMin.Y) or 
            UDim2.new(0, GUI_CONFIG.frameSize.X, 0, GUI_CONFIG.frameSize.Y)
    end)
end

local function init()
    local gui, frame = createGui()
    local titleBar = createTitleBar(frame)
    local hdr, closeBtn, minBtn, noclipBtn = createHeader(frame)
    local controls = createControls(frame)
    
    setupInputHandlers()
    setupDragging(titleBar, hdr, frame)
    setupButtonHandlers(controls, frame, gui)
    setupWindowControls(closeBtn, minBtn, controls, frame, gui)
    
    noclipBtn.MouseButton1Click:Connect(function()
        toggleNoclip(noclipBtn)
    end)
    
    controls.antiSitBtn.MouseButton1Click:Connect(function()
        toggleAntiSit(controls.antiSitBtn)
    end)
    
    controls.speedBox.Text = updateSpeed()
end

init()