:root{
  --bg:#0f1115;
  --panel:#131417;
  --card:#16171a;
  --accent:#66d17a;
  --muted:#bfc4c9;
  --tile:#1d1f22;
  --grid-line:rgba(255,255,255,0.03);
  --shadow: rgba(0,0,0,0.6);
}
html,body,#app{height:100%;margin:0;background:var(--bg);-webkit-user-select:none;-ms-user-select:none;user-select:none;color:var(--muted)}
#app{display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
canvas#game{
  display:block;
  width:100vmin;
  height:100vmin;
  max-width:100%;
  max-height:100%;
  background:linear-gradient(180deg,var(--panel),#0d0e10);
  border-radius:12px;
  box-shadow:0 10px 30px var(--shadow);
  touch-action: none;
}
#hud{
  position:absolute;
  left:8px;
  right:8px;
  bottom:12px;
  display:flex;
  gap:8px;
  align-items:flex-end;
  justify-content:space-between;
  pointer-events:none;
}
#palette{
  display:flex;
  flex-direction:column;
  gap:6px;
  pointer-events:auto;
  align-items:flex-start;
}
#palette .palette-items{
  display:flex;
  gap:8px;
}
.palette-tabs{
  display:flex;
  gap:6px;
}
.palette-tab{
  height:32px !important;
  padding:0 10px !important;
  border-radius:999px !important;
  font-size:12px !important;
  line-height:32px !important;
  background:var(--card);
  border:1px solid rgba(255,255,255,0.03);
}
.palette-tab.active{
  background:var(--accent) !important;
  color:#071006 !important;
}
.palette-item{
  width:44px;height:44px;border-radius:8px;background:var(--tile);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted);
  box-shadow:0 4px 18px rgba(0,0,0,0.6);
  touch-action: manipulation;
  border:1px solid rgba(255,255,255,0.03);
}
.palette-item.selected{outline:3px solid rgba(102,209,122,0.14);transform:translateY(-2px);box-shadow:0 6px 22px rgba(0,0,0,0.7)}
#controls{display:flex;gap:6px;pointer-events:auto}
button{
  height:44px;padding:0 10px;border-radius:8px;border:0;background:var(--card);color:var(--muted);
  box-shadow:0 6px 18px rgba(0,0,0,0.5);font-weight:600;font-size:13px;touch-action: manipulation;border:1px solid rgba(255,255,255,0.03);
}
button.active{background:var(--accent);color:#071006;box-shadow:0 8px 20px rgba(102,209,122,0.12)}
#hudMid{
  pointer-events:none;
  display:flex;
  align-items:flex-end;
  justify-content:center;
  padding-bottom:2px;
}
#keysCounter{
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.03);
  color:var(--muted);
  padding:10px 12px;
  border-radius:12px;
  font-weight:800;
  font-size:14px;
  box-shadow:0 10px 30px rgba(0,0,0,0.25);
}
#toast{
  position:absolute;left:50%;transform:translateX(-50%);bottom:74px;background:rgba(255,255,255,0.06);
  color:var(--muted);padding:8px 12px;border-radius:8px;font-size:13px;pointer-events:none;border:1px solid rgba(255,255,255,0.03);
}
.hidden{display:none}
@media (min-aspect-ratio: 1/1){
  canvas#game{height:100vh;width:100vh;max-height:calc(100vh - 120px)}
}