:root{
  --bg:#faf8ef;
  --panel:#ffffff;
  --accent:#6c4f3d;
  --muted:#888;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
  background:linear-gradient(180deg,#f6f4ee 0%, #efe9db 100%);
  color:var(--accent);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  padding:20px;
}
header h1{margin:0 0 6px 0}
#game-wrap{
  background:var(--panel);
  padding:12px;
  border-radius:10px;
  box-shadow:0 6px 18px rgba(0,0,0,0.08);
}
canvas{display:block;border-radius:6px;background: linear-gradient(#cfe8ff 0%, #eaf6ff 60%); box-shadow: inset 0 -20px 40px rgba(0,0,0,0.04); }
#hud{display:flex;gap:16px;align-items:center;margin-top:8px;justify-content:space-between}
#hud div{font-weight:600}
button{
  background:var(--accent);
  color:#fff;
  border:0;padding:8px 12px;border-radius:6px;
  cursor:pointer;font-weight:600;
}
button:active{transform:translateY(1px)}
#overlay{
  position:fixed;left:0;top:0;right:0;bottom:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,0.45);
}
#overlay.hidden{display:none}
#overlay-inner{
  background:#fff;padding:24px;border-radius:10px;text-align:center;min-width:260px;
  box-shadow:0 10px 40px rgba(0,0,0,0.25)
}
footer{font-size:13px;color:var(--muted)}
@media (max-width:900px){
  canvas{width:100%;height:auto}
  #game-wrap{width:100%}
}