:root{
  --bg1:#060612;
  --bg2:#0b0b1f;
  --neonA:#a855f7;  /* violet */
  --neonB:#22d3ee;  /* cyan */
  --neonC:#fb7185;  /* pink */
  --panel: rgba(10, 10, 25, 0.66);
  --border: rgba(168, 85, 247, 0.55);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);
}

*{ box-sizing:border-box; }
html, body { height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 20% 15%, rgba(168,85,247,0.18), transparent 55%),
    radial-gradient(1200px 800px at 80% 35%, rgba(34,211,238,0.14), transparent 55%),
    radial-gradient(900px 700px at 55% 85%, rgba(251,113,133,0.10), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
  display:flex;
  flex-direction:column;
  align-items:center;
  padding: 18px 14px 28px;
}

/* Topbar */
.topbar{
  width:min(980px, 96vw);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-bottom:14px;
}

.title{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  line-height:1.05;
}
.titleGlow{
  font-weight:900;
  letter-spacing:0.18em;
  font-size: 20px;
  text-transform:uppercase;
  text-shadow:
    0 0 12px rgba(168,85,247,0.40),
    0 0 28px rgba(34,211,238,0.25);
}
.sub{
  font-size: 12px;
  color: var(--muted);
  letter-spacing:0.14em;
  text-transform:uppercase;
}

/* Button */
.btn{
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(168,85,247,0.22), rgba(34,211,238,0.16));
  border: 1px solid rgba(255,255,255,0.10);
  color: var(--text);
  font-weight:700;
  letter-spacing:0.06em;
  box-shadow:
    0 10px 30px rgba(0,0,0,0.35),
    0 0 24px rgba(168,85,247,0.18);
  transition: transform .12s ease, filter .12s ease;
}
.btn:hover{ transform: translateY(-1px); filter: brightness(1.05); }
.btn:active{ transform: translateY(0px) scale(0.99); }

.gameWrap{
  width:min(980px, 96vw);
  display:flex;
  justify-content:center;
}

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

/* Canvas Neon Frame */
#canvas{
  width:min(850px, 92vw);
  height:auto;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow:
    0 25px 70px rgba(0,0,0,0.55),
    0 0 36px rgba(168,85,247,0.22),
    0 0 56px rgba(34,211,238,0.14);
  background: rgba(0,0,0,0.35);
}

/* HUD */
.hud{
  width:min(850px, 92vw);
  display:flex;
  gap: 12px;
  justify-content:space-between;
}
.hudBox{
  flex:1;
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow:
    0 12px 30px rgba(0,0,0,0.35),
    inset 0 0 0 1px rgba(168,85,247,0.10);
}
.hudLabel{
  font-size: 11px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.hudValue{
  font-size: 22px;
  font-weight:900;
  letter-spacing:0.04em;
  text-shadow: 0 0 18px rgba(34,211,238,0.18);
}

.hint{
  width:min(850px, 92vw);
  text-align:center;
  color: rgba(255,255,255,0.62);
  font-size: 12px;
  letter-spacing:0.04em;
}

/* Mobile */
@media (max-width: 520px){
  .hud{ flex-direction:column; }
  .titleGlow{ font-size: 18px; }
}