:root{
  --sky:#7fc6ff;
  --sky2:#a9ddff;
  --cream:#fff6e6;
  --panel:#ffffff;
  --ink:#111827;
  --muted:#334155;
  --border:rgba(0,0,0,.12);
  --shadow:0 18px 50px rgba(0,0,0,.18);

  --brick:#c84a2b;
  --gold:#f4c542;
  --green:#22c55e;
}

*{box-sizing:border-box}
body{
  margin:0;
  background:linear-gradient(180deg,var(--sky) 0%,var(--sky2) 70%,var(--cream) 100%);
  color:var(--ink);
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  overflow:hidden;
  font-size:24px;
}

.wrap{position:fixed; inset:0; display:flex; align-items:center; justify-content:center; padding:16px}
.stage{
  width:min(1100px,100%);
  aspect-ratio:16/9;
  border-radius:26px;
  border:2px solid var(--border);
  overflow:hidden;
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(255,255,255,.86));
  box-shadow:var(--shadow);
}

canvas{width:100%; height:100%; display:block}

.hud{
  position:absolute; top:14px; left:14px; right:14px;
  display:flex; flex-wrap:wrap; gap:12px;
  justify-content:space-between; align-items:center;
  z-index:10; pointer-events:none;
}

.pill{
  pointer-events:auto;
  background:rgba(255,255,255,.92);
  border:2px solid var(--border);
  padding:10px 14px;
  border-radius:999px;
  font-size:22px;
  color:var(--muted);
  box-shadow:0 6px 18px rgba(0,0,0,.10);
}
.pill strong{color:var(--ink)}

.btn{
  pointer-events:auto;
  appearance:none;
  border:2px solid var(--border);
  background:rgba(255,255,255,.94);
  color:var(--ink);
  border-radius:999px;
  padding:10px 14px;
  cursor:pointer;
  font-weight:1000;
  font-size:22px;
  box-shadow:0 6px 18px rgba(0,0,0,.10);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.warn{background:rgba(244,197,66,.92)}
.kbd{
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
  font-size:20px;
  padding:3px 10px;
  border-radius:12px;
  border:2px solid var(--border);
  background:rgba(255,255,255,.82);
  color:var(--ink);
  margin-right:6px;
}

#touchControls{
  position:absolute; left:18px; right:18px; bottom:18px;
  display:flex; justify-content:space-between; gap:14px;
  z-index:12; pointer-events:none;
}
.touchGroup{display:flex; gap:14px; pointer-events:auto}
.touchBtn{
  border-radius:18px;
  padding:16px 18px;
  font-size:24px;
  font-weight:1000;
  border:2px solid var(--border);
  box-shadow:0 10px 26px rgba(0,0,0,.14);
  background:rgba(255,255,255,.92);
}
.touchBtn.jump{background:rgba(244,197,66,.95)}

/* Modal + instructions */
.overlay{
  position:fixed; inset:0;
  background:rgba(255,255,255,.70);
  backdrop-filter: blur(6px);
  display:none; align-items:center; justify-content:center; padding:18px;
  z-index:50;
}
.modal{
  width:min(980px,100%);
  background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(255,255,255,.94));
  border:2px solid var(--border);
  border-radius:26px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.mHead{padding:18px; border-bottom:2px solid var(--border); display:flex; justify-content:space-between; gap:12px}
.mHead h2{margin:0; font-size:28px}
.mMeta{margin-top:6px; color:var(--muted); font-size:22px; line-height:1.35}
.mBody{padding:18px; background:rgba(255,255,255,.86)}
.mFoot{padding:16px 18px; border-top:2px solid var(--border); display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap; align-items:center}
.card{border:2px solid var(--border); background:rgba(255,255,255,.96); border-radius:18px; padding:16px}
.qText{margin:10px 0 14px; font-size:28px; line-height:1.35}
.small{color:var(--muted); font-size:22px; line-height:1.35}

.opt{display:flex; margin:12px 0}
.opt button{
  width:100%;
  text-align:left;
  padding:14px 16px;
  border-radius:18px;
  border:2px solid var(--border);
  background:rgba(255,255,255,.98);
  color:var(--ink);
  cursor:pointer;
  font-weight:1000;
  font-size:24px;
}
.opt button:hover{background:rgba(255,246,230,.98)}
.feedback{display:none; margin-top:12px; font-weight:1000; font-size:24px}
.feedback.good{color:#15803d}
.feedback.bad{color:#be123c}

.drawRow{display:grid; grid-template-columns:1fr 300px; gap:14px; margin-top:12px}
@media(max-width:900px){ .drawRow{grid-template-columns:1fr} }
#drawCanvas{
  width:100%; height:320px;
  border-radius:18px;
  border:2px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(255,246,230,.95));
  touch-action:none;
}
.toolCol{display:flex; flex-direction:column; gap:12px}
.toolCol .btn{border-radius:18px}

#howto{
  position:fixed; inset:0;
  display:flex; align-items:center; justify-content:center; padding:18px;
  background:rgba(255,255,255,.70);
  backdrop-filter: blur(6px);
  z-index:60;
}
#howto .box{
  width:min(980px,100%);
  background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(255,255,255,.94));
  border:2px solid var(--border);
  border-radius:26px;
  padding:20px;
  box-shadow:var(--shadow);
}
#howto h1{margin:0 0 10px; font-size:34px}
#howto ul{margin:10px 0 0 22px; color:var(--muted); line-height:1.5; font-size:24px}
#howto .row{display:flex; gap:12px; flex-wrap:wrap; margin-top:16px}