:root{--primary:#ff3b30;--bg-dark:#141414cc;--text-light:#fff}body,html{-webkit-user-select:none;user-select:none;background-color:#000;width:100%;height:100%;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}canvas{z-index:1;width:100%;height:100%;display:block;position:absolute;top:0;left:0}#ui-container{z-index:10;pointer-events:none;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:absolute;top:0;left:0}#auth-section,#game-ui{pointer-events:auto;text-align:center;background:var(--bg-dark);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--text-light);border:1px solid #ffffff1a;border-radius:16px;padding:2rem;box-shadow:0 4px 30px #00000080}h1{background:linear-gradient(90deg,#ff8a00,#e52e71);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-top:0;font-size:2rem;font-weight:800}.btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 24px;font-size:1.2rem;font-weight:700;transition:transform .2s,background .2s;box-shadow:0 4px 10px #ff3b3066}.btn:active{transform:scale(.95)}#score-container{margin-bottom:20px;font-size:1.5rem;font-weight:700}#ar-instructions,#game-controls{background:var(--bg-dark);color:#fff;text-align:center;pointer-events:none;border-radius:20px;width:max-content;padding:10px 20px;position:absolute;bottom:10%;left:50%;transform:translate(-50%)}#ar-unsupported{color:var(--primary);background:var(--bg-dark);border-radius:8px;padding:1rem}