:root{
  --bg:#070709;
  --card:rgba(255,255,255,0.03);
  --panel:#0e0f11;
  --muted:#c8cbd0;
  --accent:#39d07a;
  --muted-2:#9aa0a6;
  --outline: rgba(255,255,255,0.06);
  --glass: rgba(255,255,255,0.04);
  --glow: 0 8px 30px rgba(57,208,122,0.08);
}
*{box-sizing:border-box}
html,body,#app{height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;color:var(--muted);background:
  radial-gradient(1200px 600px at 10% 10%, rgba(57,208,122,0.03), transparent 8%),
  radial-gradient(900px 400px at 90% 80%, rgba(0,0,0,0.25), transparent 20%),
  var(--bg);
 -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;}
#app{position:relative;display:flex;height:100vh;gap:18px;padding:18px;align-items:stretch}

/* FPS counter */
#fps-counter{
  position:absolute;
  top:18px;
  left:50%;
  transform:translateX(-50%);
  background:var(--glass);
  color:var(--accent);
  padding:6px 10px;
  border-radius:10px;
  border:1px solid var(--outline);
  font-weight:700;
  z-index:80;
  font-size:13px;
  box-shadow: var(--glow);
}

/* Game area */
#game-area{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:14px;border-radius:14px;background:linear-gradient(180deg, rgba(255,255,255,0.01), transparent);box-shadow: inset 0 1px 0 rgba(255,255,255,0.02), 0 20px 60px rgba(0,0,0,0.6);border:1px solid rgba(255,255,255,0.02)}
#nes-canvas{background:#000;border-radius:10px;border:1px solid rgba(255,255,255,0.03);width:640px;height:600px;max-width:100%;max-height:calc(100vh - 260px);image-rendering:pixelated;box-shadow:0 20px 50px rgba(0,0,0,0.7), var(--glow)}
/* overlay for peer cursors */
#cursor-canvas{width:640px;height:600px;max-width:100%;max-height:calc(100vh - 260px);pointer-events:none;image-rendering:pixelated;border-radius:10px;position:absolute;left:0;top:0}

/* Controls */
#controls{display:flex;flex-direction:column;gap:10px;align-items:center;transform-style:preserve-3d}
#controls .row{display:flex;gap:10px}
#controls button{
  min-width:60px;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,0.04);
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.005));
  color:var(--muted);font-weight:700;letter-spacing:0.6px;touch-action:manipulation;
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
  box-shadow: 0 6px 18px rgba(0,0,0,0.45);
}
#controls button:active{transform:translateY(2px) scale(.995);box-shadow:0 4px 10px rgba(0,0,0,0.5)}
#controls button:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,0.55)}
#controls button.primary{background:linear-gradient(180deg, rgba(57,208,122,0.14), rgba(57,208,122,0.06));border:1px solid rgba(57,208,122,0.25);color:#07120a;}

/* Sidebar / panels */
#sidebar{width:340px;display:flex;flex-direction:column;gap:14px}
.card-like{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));border-radius:12px;padding:14px;border:1px solid rgba(255,255,255,0.03);box-shadow:0 8px 30px rgba(0,0,0,0.55)}
#status,#chat,#players{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.02));border-radius:12px;padding:12px;box-shadow: 0 8px 30px rgba(0,0,0,0.55);border:1px solid rgba(255,255,255,0.02)}
#status{display:flex;flex-direction:column;gap:6px}
#host-badge,#you-badge{font-size:14px;color:var(--muted);margin-bottom:4px;display:flex;gap:8px;align-items:center}
.badge-pill{background:var(--glass);padding:6px 8px;border-radius:999px;font-size:12px;color:var(--muted-2);border:1px solid rgba(255,255,255,0.03)}

/* Chat */
#messages{height:300px;overflow:auto;padding:10px;display:flex;flex-direction:column;gap:8px}
.message{padding:8px;border-radius:10px;background:linear-gradient(180deg, rgba(0,0,0,0.25), rgba(255,255,255,0.01));border:1px solid rgba(255,255,255,0.02);font-size:13px}
.message strong{color:var(--muted)}
#chat-form{display:flex;gap:10px;margin-top:10px}
#chat-input{flex:1;padding:10px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:var(--muted);outline:none}
#chat-input::placeholder{color:var(--muted-2)}
#chat-form button{padding:10px 14px;border-radius:10px;border:0;background:linear-gradient(90deg,var(--accent),#2ec36b);color:#06120a;font-weight:700;box-shadow:0 10px 30px rgba(46,195,107,0.12);cursor:pointer}

/* Peers */
#peers-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.peer{display:flex;align-items:center;gap:12px}
.peer img{width:36px;height:36px;border-radius:50%;border:2px solid rgba(255,255,255,0.03);box-shadow:0 6px 18px rgba(0,0,0,0.5)}

/* Settings modal */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:linear-gradient(180deg, rgba(0,0,0,0.65), rgba(0,0,0,0.8));z-index:60}
.modal[aria-hidden="false"]{display:flex}
.modal-content{background:linear-gradient(180deg, #0f1112, #0b0c0d);padding:18px;border-radius:14px;width:min(620px,94%);box-shadow:0 30px 80px rgba(0,0,0,0.75);border:1px solid rgba(255,255,255,0.03)}
.mapping-row{display:flex;justify-content:space-between;align-items:center;padding:10px;border-radius:10px;border:1px solid rgba(255,255,255,0.02);margin-bottom:8px;background:linear-gradient(180deg, rgba(255,255,255,0.01), transparent)}
.mapping-row button{min-width:140px;background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--muted);padding:8px;border-radius:8px}
#controls button.mapping-label{font-size:14px;padding:8px 10px}

/* small screens responsiveness */
@media (max-width:880px){
  #app{flex-direction:column;padding:12px;gap:10px}
  #sidebar{width:100%;order:2;display:flex;flex-direction:row;gap:10px;overflow:auto}
  #game-area{order:1;padding:8px}
  #nes-canvas{height:420px}
}

/* subtle vignette for depth */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;
  background: radial-gradient(80% 60% at 50% 40%, rgba(0,0,0,0), rgba(0,0,0,0.45));
  mix-blend-mode:multiply;z-index:1;
}