:root{
  --bg:#0e1b25;
  --card:#122333;
  --fg:#eaf2fb;
  --muted:#9db3c7;
  --accent:#6ee7ff;
  --danger:#ff6b6b;
  --ok:#6bffa6;
  --border:rgba(255,255,255,.12);
  --shadow:0 10px 30px rgba(2,10,18,.5);
  --radius:16px;
  --btn:#163247;
  --btn-hover:#21465f;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font:16px/1.45 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial;
  color:var(--fg);
  background:radial-gradient(1200px 600px at 50% -20%, #183448 0%, var(--bg) 60%);
}

.wrap{
  max-width:900px;
  margin:32px auto;
  padding:0 16px 32px;
}

.hud{
  display:flex;
  align-items:flex-end;
  gap:16px;
  justify-content:space-between;
  margin-bottom:16px;
}
.hud h1{
  margin:0;
  letter-spacing:.5px;
  text-shadow:0 2px 12px rgba(0,0,0,.4);
}
.stats{display:flex; gap:18px; color:var(--muted)}

.card{
  position:relative;
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.03));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
}

canvas{
  display:block;
  width:100%;
  height:auto;
  border-radius:12px;
  background:linear-gradient(180deg, #0f2231 0%, #0e1d2a 100%);
  outline:1px solid rgba(255,255,255,.05);
}

.hint{
  text-align:center;
  color:var(--muted);
  margin:12px 0 0;
  font-size:.95rem;
}

.overlay{
  position:absolute; inset:0;
  display:grid; place-items:center;
  background:rgba(5,12,20,.55);
  backdrop-filter: blur(3px);
}
.overlay.hidden{display:none}
.panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px 20px;
  min-width:260px;
  text-align:center;
  box-shadow:var(--shadow);
}
.panel h2{margin:6px 0 8px}
.btn{
  appearance:none;
  border:1px solid var(--border);
  color:var(--fg);
  background:var(--btn);
  padding:10px 14px;
  border-radius:12px;
  cursor:pointer;
}
.btn:hover{background:var(--btn-hover)}

.touch{
  display:none;
  margin:16px auto 0;
  max-width:360px;
  user-select:none;
}
.touch .row{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:14px;
  margin-top:12px;
}
.dpad{
  width:100%;
  padding:14px 0;
  font-size:22px;
  border-radius:12px;
  border:1px solid var(--border);
  background:var(--btn);
  color:var(--fg);
  box-shadow:var(--shadow);
}
.dpad:active{transform:translateY(1px)}

@media (max-width: 780px){
  .touch{display:block}
}