A modern Dark-Tech Health Bar for Roblox with premium game-feel and clean visuals. Built entirely by script (no external assets required), positioned bottom-left, and fully mobile-ready with automatic scaling. Replaces the default Roblox health UI. Features include smooth health fill animations, a damage lag bar (with a proper 0 HP fix—no red remainder), subtle hit feedback (border flash + micro shake), a low-health warning glow, and a dynamic heartbeat effect: slow and calm at high health, faster and more intense at low health, and fully stopped/reset when the player is dead. Plug & Play: drop the LocalScript into StarterGui → HealthBar (ScreenGui) and it works instantly with any Humanoid-based character.