#f50brain-app{max-width:900px;margin:20px auto;background:#9fc7d9;padding:30px;border-radius:20px;font-family:Arial;text-align:center}
.f50-btn{display:block;width:80%;margin:12px auto;padding:18px;border:none;border-radius:40px;background:#0c88c8;color:#fff;font-size:24px;cursor:pointer}
.f50-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;max-width:500px;margin:20px auto}
.f50-cell{background:#fff;padding:18px;border-radius:8px;cursor:pointer;font-weight:bold}
.f50-progress{height:12px;background:#ddd;border-radius:20px;overflow:hidden;margin:20px 0}
.f50-progress span{display:block;height:100%;background:#0c88c8;width:0%;transition:.4s}
.badges img{height:60px;margin:10px}
#reflexBox{height:220px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:32px;border-radius:12px;background:red}
.confetti{position:fixed;top:-10px;font-size:24px;animation:fall 3s linear forwards}
@keyframes fall{to{transform:translateY(100vh)}}