:root{
  --bg:#0f1720;
  --panel:#0b1220;
  --accent:#20c997;
  --muted:#9aa6b2;
  --glass: rgba(255,255,255,0.03);
}
*{box-sizing:border-box;font-family:Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,"Helvetica Neue",Arial;}
html,body,#app{height:100%;margin:0;background:linear-gradient(180deg,var(--bg),#07101a);color:#e6eef3}
#app{display:flex;gap:12px;align-items:center;justify-content:center;padding:10px}
canvas{border-radius:12px;background:var(--glass);box-shadow:0 8px 30px rgba(2,6,23,0.7)}
#ui{width:320px;padding:14px;border-radius:12px;background:linear-gradient(180deg,var(--panel),#07101a);box-shadow:0 6px 20px rgba(2,6,23,0.6);display:flex;flex-direction:column;gap:10px}
.row{display:flex;align-items:center;gap:8px}
.row label{width:100px;font-size:14px;color:var(--muted)}
select, input[type="range"]{flex:1}
.buttons{display:flex;gap:8px}
button{flex:1;padding:10px;border-radius:8px;border:0;background:linear-gradient(90deg,var(--accent),#2dd4bf);color:#052018;font-weight:600}
#stats{display:flex;flex-direction:column;gap:6px;padding:8px;border-radius:8px;background:rgba(255,255,255,0.02);font-size:14px;color:var(--muted)}
#hint{font-size:12px;color:#98a7b3}
@media (max-width:900px){
  #app{flex-direction:column}
  canvas{width:92vw;height:52vh;max-width:680px}
  #ui{width:92vw}
}