html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:radial-gradient(circle at top,#2a1f4f 0%,#090b18 70%);font-family:Inter,'Segoe UI',sans-serif}#game-container{width:100vw;height:100vh}.chess-hud{position:fixed;top:18px;left:18px;z-index:11;pointer-events:none;min-width:180px;color:#f5f9ff;background:linear-gradient(160deg,rgba(20,25,42,0.86),rgba(57,35,83,0.86));border:1px solid rgba(255,255,255,0.14);border-radius:14px;padding:12px 14px;box-shadow:0 8px 28px rgba(2,6,24,0.45)}.hud-title{font-size:12px;text-transform:uppercase;letter-spacing:1.8px;color:#9ad7ff;margin-bottom:5px}.hud-score{font-size:22px;font-weight:700}.hud-sub,.hud-streak,.hud-health{margin-top:4px;font-size:13px}