local function CustomWorldToScreen(worldPos)
    local camera = workspace.CurrentCamera
    local cframe = camera.CFrame
    local fov = camera.FieldOfView
    local viewport = camera.ViewportSize
    
    -- Transform world point to camera relative space
    local relPos = cframe:PointToObjectSpace(worldPos)
    if relPos.Z >= 0 then return Vector2.new(0, 0), false end -- Behind camera
    
    local aspect = viewport.X / viewport.Y
    local fovYRad = math.rad(fov)
    local fovXRad = 2 * math.atan(math.tan(fovYRad / 2) * aspect)
    
    local screenX = (viewport.X / 2) * (1 - (relPos.X / (-relPos.Z * math.tan(fovXRad / 2))))
    local screenY = (viewport.Y / 2) * (1 + (relPos.Y / (-relPos.Z * math.tan(fovYRad / 2))))
    return Vector2.new(screenX, screenY), true
end