:root{color-scheme:dark;}
*{box-sizing:border-box;}
html,body{height:100%;width:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:#050612;
  color:#eef3ff;
  overflow:hidden;
  overscroll-behavior:none;
  -webkit-user-select:none;
  user-select:none;
  -webkit-tap-highlight-color:transparent;
  touch-action:none;
}
#stage{position:fixed;inset:0;display:block;}
canvas{
  width:100%;
  height:100%;
  display:block;
  background:#050612;
  image-rendering:pixelated;
  image-rendering:crisp-edges;
}

/* HUD */
#hud{
  position:fixed;
  left:max(10px, env(safe-area-inset-left));
  right:max(10px, env(safe-area-inset-right));
  top:max(10px, env(safe-area-inset-top));
  display:flex;
  justify-content:space-between;
  gap:10px;
  z-index:10;
  pointer-events:none;
}
.hgroup{display:flex;gap:8px;flex-wrap:wrap;align-items:center;}
.pill{
  padding:7px 10px;
  border-radius:999px;
  background:rgba(0,0,0,0.28);
  border:1px solid rgba(255,255,255,0.18);
  backdrop-filter:blur(10px);
  box-shadow:0 10px 24px rgba(0,0,0,0.35);
  font-weight:900;
  font-size:13px;
  letter-spacing:0.02em;
  white-space:nowrap;
}
.pill b{font-weight:1000;}
.title{
  background:linear-gradient(135deg, rgba(255,58,167,0.22), rgba(77,215,255,0.16));
  border-color:rgba(255,255,255,0.22);
  letter-spacing:0.10em;
}

/* Controls */
#controls{
  position:fixed;
  left:max(12px, env(safe-area-inset-left));
  right:max(12px, env(safe-area-inset-right));
  bottom:max(12px, env(safe-area-inset-bottom));
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:14px;
  z-index:20;
}
.cluster{display:flex;gap:12px;align-items:flex-end;}
.btn{
  width:78px;height:78px;border-radius:18px;
  border:1px solid rgba(255,255,255,0.22);
  background:rgba(255,255,255,0.14);
  box-shadow:0 18px 34px rgba(0,0,0,0.40), 0 0 18px rgba(124,92,255,0.12);
  display:flex;align-items:center;justify-content:center;
  font-weight:1000;font-size:18px;
  touch-action:none;
}
.btn:active{transform:translateY(1px) scale(0.99);}
.btn.small{width:64px;height:64px;border-radius:16px;font-size:13px;font-weight:1000;}
.btn.primary{
  background:linear-gradient(135deg, rgba(125,255,138,0.26), rgba(77,215,255,0.18));
  border-color:rgba(125,255,138,0.38);
  box-shadow:0 18px 34px rgba(0,0,0,0.40), 0 0 20px rgba(125,255,138,0.18);
}
.btn.warn{
  background:linear-gradient(135deg, rgba(255,90,138,0.22), rgba(255,209,74,0.14));
  border-color:rgba(255,90,138,0.36);
}
.btn.disabled{opacity:0.48;filter:saturate(0.7);}

/* Home */
#home{
  position:fixed;inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  background:radial-gradient(1200px 700px at 50% 0%, rgba(77,215,255,0.18), rgba(255,58,167,0.12), rgba(0,0,0,0.70));
  z-index:30;
}
.card{
  width:min(620px, 92vw);
  border-radius:22px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.16);
  box-shadow:0 30px 90px rgba(0,0,0,0.62), 0 0 34px rgba(77,215,255,0.12);
  backdrop-filter:blur(12px);
  padding:16px 16px 14px 16px;
}
.hTitle{
  text-align:center;
  font-weight:1000;
  font-size:28px;
  letter-spacing:0.12em;
  margin:2px 0 8px 0;
}
.hSub{
  text-align:center;
  font-weight:900;
  font-size:14px;
  opacity:0.92;
  margin:0 0 10px 0;
}
.grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:10px;
  margin:12px 0 12px 0;
}
.skin{
  border-radius:18px;
  border:1px solid rgba(255,255,255,0.16);
  background:rgba(0,0,0,0.18);
  padding:10px;
  text-align:left;
  font-weight:1000;
}
.skin:active{transform:translateY(1px) scale(0.99);}
.row{display:flex;align-items:center;gap:10px;}
.preview{
  width:52px;height:38px;border-radius:14px;
  border:1px solid rgba(255,255,255,0.18);
  box-shadow:inset 0 0 0 2px rgba(0,0,0,0.16);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;
}
.meta{display:flex;flex-direction:column;gap:2px;}
.name{font-size:14px;}
.desc{font-size:12px;opacity:0.86;font-weight:900;}
.actions{display:flex;gap:10px;justify-content:center;}
.start{
  width:100%;
  padding:12px 14px;
  border-radius:18px;
  border:1px solid rgba(125,255,138,0.38);
  background:linear-gradient(135deg, rgba(125,255,138,0.24), rgba(77,215,255,0.16));
  font-weight:1000;
  font-size:16px;
}
.start:active{transform:translateY(1px) scale(0.99);}
.hint{margin-top:10px;text-align:center;font-size:12px;opacity:0.86;font-weight:900;line-height:1.35;}

/* Toast + error */
#toast{
  position:fixed;left:50%;top:50%;
  transform:translate(-50%,-50%);
  padding:10px 12px;
  border-radius:14px;
  background:rgba(0,0,0,0.60);
  border:1px solid rgba(255,255,255,0.14);
  backdrop-filter:blur(10px);
  font-weight:1000;
  font-size:14px;
  display:none;
  z-index:40;
  max-width:min(92vw, 560px);
  text-align:center;
}
#error{
  position:fixed;inset:10px;
  display:none;
  padding:12px;
  border-radius:14px;
  background:rgba(0,0,0,0.86);
  border:1px solid rgba(255,255,255,0.18);
  z-index:50;
  overflow:auto;
  white-space:pre-wrap;
  font-size:13px;
  line-height:1.45;
}

@media (max-width:420px){
  .grid{grid-template-columns:1fr;}
  .btn{width:68px;height:68px;border-radius:16px;font-size:16px;}
  .btn.small{width:56px;height:56px;border-radius:14px;font-size:12px;}
}