:root{
  --bg1:#f7fbff;
  --bg2:#eef4ff;
  --panel:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --good:#16a34a;
  --bad:#dc2626;
  --accent:#2563eb;
  --accent2:#7c3aed;
  --border:rgba(15,23,42,.12);
}
*{ box-sizing:border-box; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(900px 420px at 10% 10%, rgba(37,99,235,.18) 0%, rgba(37,99,235,0) 60%),
    radial-gradient(900px 420px at 90% 20%, rgba(124,58,237,.16) 0%, rgba(124,58,237,0) 60%),
    linear-gradient(180deg, var(--bg1) 0%, var(--bg2) 100%);
  color:var(--text);
}

.top{ padding:22px 16px 10px; text-align:center; }
.top h1{
  margin:0;
  font-size:30px;
  letter-spacing:.2px;
  color:var(--text);
}
.subtitle{ margin:6px 0 0; color:var(--muted); font-size:15px; }

.wrap{
  display:grid;
  grid-template-columns: 1fr;
  gap:14px;
  padding:14px 16px 22px;
  max-width: 980px;
  margin: 0 auto;
}
@media (min-width: 900px){
  .wrap{ grid-template-columns: 1.05fr .95fr; }
}

.panel{
  background: var(--panel);
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  box-shadow: 0 12px 30px rgba(15,23,42,.10);
}
.stats{
  display:grid;
  grid-template-columns: repeat(6, minmax(0,1fr));
  gap:10px;
  margin-bottom:12px;
  font-size:13.5px;
  color:var(--muted);
}
.stats .label{ color: var(--text); font-weight:700; }

.toggles{
  display:flex;
  gap:14px;
  justify-content:center;
  margin: 6px 0 12px;
  color:var(--muted);
  font-size:13px;
}
.toggle{ display:flex; gap:8px; align-items:center; cursor:pointer; }
.toggle input{ transform: scale(1.1); }

.verbCard{
  border:1px solid var(--border);
  border-radius:16px;
  padding:16px;
  text-align:center;
  margin-bottom:12px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}
.verbPrompt{ color:var(--muted); font-size:13px; }
.verb{
  font-size:52px;
  font-weight:900;
  margin:6px 0 2px;
  letter-spacing:1px;
  color:var(--text);
}
.hint{ color:var(--muted); font-size:14px; }

.choices{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:10px;
  margin-bottom:12px;
}
.choice{
  border:1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  padding:12px 10px;
  border-radius:14px;
  font-weight:800;
  cursor:pointer;
  box-shadow: 0 6px 16px rgba(15,23,42,.06);
  transition: transform .05s ease, box-shadow .15s ease, border-color .15s ease;
}
.choice:hover{
  border-color: rgba(37,99,235,.35);
  box-shadow: 0 10px 22px rgba(37,99,235,.10);
}
.choice:active{ transform: scale(.98); }
.choice[disabled]{ opacity:.55; cursor:not-allowed; }

.controls{
  display:flex;
  gap:10px;
  justify-content:center;
  margin-bottom:12px;
}
.controls button{
  border:1px solid var(--border);
  background: rgba(255,255,255,.08);
  color: var(--text);
  padding:10px 12px;
  border-radius:12px;
  font-weight:700;
  cursor:pointer;
}
.controls button:disabled{ opacity:.5; cursor:not-allowed; }

.rules{ margin-top:6px; color: var(--muted); }
.rules summary{ cursor:pointer; color:#cfe0ff; font-weight:700; }

.resultBox{
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px;
}
.resultLine{
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  margin:8px 0;
}
.resultLabel{ color:var(--muted); font-size:13px; }
.pill{
  border:1px solid var(--border);
  padding:6px 10px;
  border-radius:999px;
  background: #ffffff;
  font-weight:900;
  color: var(--text);
}}

.mt{ margin-top:14px; }

.progress .bar{
  height:10px;
  border-radius:999px;
  background: rgba(255,255,255,.08);
  overflow:hidden;
  border:1px solid var(--border);
}
.progress .fill{
  height:100%;
  width:0%;
  background: var(--accent);
  transition: width .2s ease;
}
.barText{ color:var(--muted); margin-top:6px; font-size:13px; }

.finalScore{
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px;
  background: rgba(255,255,255,.06);
  color:#cfe0ff;
  font-weight:800;
  text-align:center;
}

.history{
  margin:8px 0 0;
  padding-left:18px;
  color: var(--muted);
  max-height: 220px;
  overflow:auto;
}
.history li{ margin:6px 0; }
.good{ color: var(--good); font-weight:800; }
.bad{ color: var(--bad); font-weight:800; }

.footer{
  text-align:center;
  color:var(--muted);
  padding:0 16px 18px;
}
code{ color:#cfe0ff; }

.author{
  margin-top:12px;
  font-size:18px;
  color: var(--muted);
  font-weight:700;
}