:root{
  --bg:#06080f;
  --panel:#0f162b;
  --ink:#eaf0ff;
  --muted:#9bb0d0;
  --line:rgba(255,255,255,.12);
  --blue:#2f7dff;
}

*{ box-sizing:border-box }

body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 900px at 50% 10%, #101c38 0%, var(--bg) 60%);
  color:var(--ink);
}

.topbar{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  background: rgba(10,15,35,.9);
}

.title{
  font-weight:900;
  letter-spacing:1px;
}

.hud{
  display:flex;
  gap:16px;
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
}

.game-wrap{
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:12px;
  gap:10px;
}

canvas{
  width: min(96vw, 520px);
  height: calc(100vh - 200px);
  max-height: 880px;
  border-radius:18px;
  border:1px solid var(--line);
  background: transparent;
  box-shadow: 0 25px 60px rgba(0,0,0,.5);
  touch-action:none;
}

.controls{
  width:min(96vw, 520px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 12px;
  border-radius:14px;
  background: rgba(15,22,45,.85);
  border:1px solid var(--line);
}

button{
  background: rgba(47,125,255,.2);
  border:1px solid rgba(47,125,255,.4);
  color:var(--ink);
  padding:8px 14px;
  border-radius:12px;
  font-weight:700;
  cursor:pointer;
}

button:active{
  transform: translateY(1px);
}

.hint{
  font-size:12px;
  color:var(--muted);
}

.footer{
  text-align:center;
  font-size:12px;
  color:rgba(155,176,208,.7);
  padding-bottom:12px;
}