:root{
  --bg:#0f1226;
  --fg:#e6e9ff;
  --muted:#9aa3ff;
  --accent:#6ee7b7;
  --danger:#ff6b6b;
  --panel:#171a36;
  --grid:#20254a;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  background: radial-gradient(1200px 800px at 50% -10%, #1b1f44 0%, var(--bg) 55%);
  color: var(--fg);
  font-family: var(--font);
}

.wrap{
  max-width: 820px;
  margin: 32px auto;
  padding: 0 16px 32px;
}

header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
  margin-bottom: 12px;
}

h1{
  font-size: clamp(18px, 3vw, 22px);
  margin: 0;
  letter-spacing:.5px;
  font-weight: 700;
}

.panel{
  background: linear-gradient(180deg, var(--panel), #0f1230);
  border: 1px solid #212757;
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 12px;
}

.hud{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom: 12px;
}

.score{
  font-variant-numeric: tabular-nums;
  letter-spacing:.5px;
}

.btn{
  appearance:none;
  border:1px solid #2a2f66;
  background: linear-gradient(180deg, #1b2050, #12163b);
  color: var(--fg);
  padding: 8px 14px;
  border-radius: 10px;
  cursor:pointer;
  font-weight:600;
  transition: transform .06s ease, box-shadow .2s ease, border-color .2s ease;
  box-shadow: 0 2px 0 #080a20;
}
.btn:hover{ border-color:#3a4090; }
.btn:active{ transform: translateY(1px); }

canvas{
  display:block;
  width:100%;
  height:auto;
  border-radius: 12px;
  background:
    linear-gradient(180deg, #0c0f28 0%, #0b0e25 50%) padding-box,
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,0)) border-box;
  border:1px solid #1f2450;
}

.help{
  margin-top:10px;
  color: var(--muted);
  font-size: 14px;
}


.toast { 
  pointer-events: none;
}


.toast .card {
  pointer-events: auto;
}

.title{
  font-size: clamp(18px, 3.4vw, 26px);
  margin:0 0 6px;
}
.subtitle{
  margin:0 0 10px;
  color: var(--muted);
}
.key{
  display:inline-block;
  padding:.1em .5em;
  border:1px solid #39419a;
  border-radius:6px;
  background:#12163b;
  margin:0 .15em;
  font-weight:700;
}