:root{
  --bg:#0b1220;
  --panel:linear-gradient(180deg,#071017,#071a17);
  --accent:#69f0ae;
  --muted:#b6c6c3;
  --danger:#ff6b6b;
  --glass: rgba(255,255,255,0.03);
  --glass-2: rgba(255,255,255,0.04);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial}
body{background:radial-gradient(circle at 10% 10%, #062024 0%, #04121a 40%, #02060a 100%);color:var(--muted);display:flex;align-items:center;justify-content:center;padding:20px}
.container{width:100%;max-width:960px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.topbar h1{margin:0;color:var(--accent);letter-spacing:1px}
.top-info{display:flex;gap:12px;align-items:center}
.board-area{display:flex;gap:18px;align-items:flex-start}
.canvas-wrap{position:relative}
canvas{background:linear-gradient(180deg,#05181a 0%, #07222a 100%);border-radius:12px;display:block;box-shadow:0 8px 30px rgba(0,0,0,0.6);}
.controls{display:flex;flex-direction:column;gap:14px;margin-left:6px}
.panel{background:var(--glass-2);padding:12px;border-radius:10px;color:#d9f9df;min-width:140px;text-align:center}
.value{font-weight:700;color:white;font-size:18px}
.buttons{display:flex;flex-direction:column;gap:10px}
button{background:transparent;border:1px solid rgba(255,255,255,0.06);padding:10px 14px;border-radius:8px;color:var(--muted);cursor:pointer;transition:all 140ms ease}
button:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,0.45);border-color:rgba(255,255,255,0.12);color:white}
button.primary{background:linear-gradient(90deg,#28b487,#69f0ae);border:none;color:#042015}
.scores{margin-top:18px;background:rgba(3,6,10,0.4);padding:12px;border-radius:8px;color:#dbeee1}
.scores h2{margin:0 0 8px;color:var(--accent)}
.top-only{padding:8px}
.hidden{display:none}
/* Ensure modal can be hidden (override .modal display) */
.modal.hidden{display:none}
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.65))}
.modal-content{background:linear-gradient(180deg,#042026,#072b2e);padding:18px;border-radius:12px;border:1px solid rgba(255,255,255,0.03);color:#e8ffef;min-width:280px}
.modal-content h2{margin-top:0;color:var(--accent)}
.modal-content input{width:100%;padding:10px;margin:8px 0;border-radius:8px;border:1px solid rgba(255,255,255,0.06);background:rgba(255,255,255,0.02);color:white}
.modal-buttons{display:flex;gap:10px;justify-content:flex-end}
footer{margin-top:12px;text-align:center;color:var(--muted);font-size:13px}

/* D-pad for mobile */
.dpad{display:none;position:absolute;right:8px;bottom:8px;width:120px;height:120px;align-items:center;justify-content:center;gap:6px}
.dpad-row{display:flex;gap:6px;justify-content:center}
.dir{background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.04);padding:8px 12px;border-radius:8px;color:var(--muted);font-weight:700}
.dir:active{transform:scale(0.96)}

@media (max-width:720px){
  .board-area{flex-direction:column;align-items:center}
  .controls{flex-direction:row;justify-content:space-between;width:100%;margin-left:0}
  canvas{width:92vw;height:92vw}
  .dpad{display:flex}
}

/* Fullscreen styling for immersive mobile experience */
:fullscreen .canvas-wrap, :-webkit-full-screen .canvas-wrap, :-moz-full-screen .canvas-wrap {
  width:100vw; height:100vh; padding:0; margin:0; display:flex; align-items:center; justify-content:center; background:transparent;
}
:fullscreen #gameCanvas, :-webkit-full-screen #gameCanvas, :-moz-full-screen #gameCanvas {
  width:100vw !important; height:100vh !important; max-width:none; max-height:none; border-radius:0 !important;
}
/* Ensure overlays (modals) are also visible in fullscreen */
:fullscreen .modal, :-webkit-full-screen .modal { z-index:999999 }

/* Music toggle and canvas glow */
#musicToggle{background:transparent;border:1px solid rgba(255,255,255,0.04);padding:10px;border-radius:10px;color:var(--muted);cursor:pointer;margin-top:8px}
#musicToggle.active{background:linear-gradient(90deg,var(--accent-2),var(--accent));border:none;color:#022}
.canvas-glow{position:absolute;inset:0;pointer-events:none;border-radius:18px;box-shadow:0 30px 120px rgba(0,180,150,0.06), inset 0 -40px 120px rgba(0,0,0,0.6)}