*{margin:0;padding:0;box-sizing:border-box}
body{background:#0a0a1a;overflow:hidden;touch-action:none;font-family:'Segoe UI',system-ui,sans-serif;user-select:none}
canvas{display:block}
#ui{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;pointer-events:none}
#overlay{text-align:center;pointer-events:auto;display:none}
#overlay h1{font-size:2.5rem;color:#0ff;text-shadow:0 0 20px #0ff,0 0 40px #06f;margin-bottom:.5rem}
#overlay p{color:#8af;font-size:1.1rem;margin:.3rem 0}
#overlay .score{font-size:2rem;color:#fff;margin:.5rem 0}
#overlay .tap{color:#0ff;font-size:1rem;margin-top:1rem;animation:pulse 1.5s infinite}
#hud{position:absolute;top:12px;left:0;width:100%;display:flex;justify-content:center;pointer-events:none}
#hud span{color:#0ff;font-size:1.3rem;font-weight:700;text-shadow:0 0 8px #0ff}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}