:root {
  color-scheme: dark;
  --bg: #0b1024;
  --panel: rgba(13, 22, 48, 0.82);
  --panel-solid: #111b3b;
  --text: #eef5ff;
  --muted: #a7b5d8;
  --accent: #ffd166;
  --pink: #ff5fa2;
  --cyan: #4be1ff;
  --green: #61f2a1;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(75, 225, 255, 0.28), transparent 28%),
    radial-gradient(circle at 85% 5%, rgba(255, 95, 162, 0.25), transparent 24%),
    linear-gradient(135deg, #080c1e 0%, #172450 55%, #0e1632 100%);
}

.shell {
  width: min(1120px, 100%);
  display: grid;
  grid-template-columns: minmax(300px, 520px) minmax(260px, 360px);
  gap: 24px;
  align-items: start;
}

.game-card, .leaderboard-card {
  border: 1px solid rgba(255,255,255,0.14);
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0,0,0,0.38);
  backdrop-filter: blur(18px);
  border-radius: 28px;
  padding: 20px;
}

.topbar, .leaderboard-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
}

h1, h2, p { margin: 0; }
h1 { font-size: clamp(1.35rem, 3vw, 2rem); line-height: 1.05; }
h2 { font-size: 1.45rem; }
.eyebrow { color: var(--cyan); text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.72rem; font-weight: 800; margin-bottom: 6px; }

.canvas-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 432 / 640;
  max-height: 76vh;
  overflow: hidden;
  border-radius: 24px;
  border: 2px solid rgba(255,255,255,0.18);
  background: #1a315f;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: auto;
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  padding: 22px;
  background: linear-gradient(rgba(5, 8, 22, 0.18), rgba(5, 8, 22, 0.62));
}
.overlay.show { display: grid; }
.panel {
  width: min(330px, 100%);
  text-align: center;
  padding: 24px;
  border-radius: 24px;
  background: rgba(9, 15, 35, 0.88);
  border: 1px solid rgba(255,255,255,0.2);
  box-shadow: 0 18px 50px rgba(0,0,0,0.35);
}
.panel p { color: var(--muted); line-height: 1.5; margin: 10px 0 18px; }

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 900;
  color: #16203d;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), #ff9f1c);
  box-shadow: 0 10px 24px rgba(255, 159, 28, 0.28);
}
button:hover { transform: translateY(-1px); }
button:active { transform: translateY(0); }
button:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.ghost {
  color: var(--text);
  background: rgba(255,255,255,0.1);
  box-shadow: none;
  border: 1px solid rgba(255,255,255,0.14);
}
.small { padding: 8px 12px; font-size: 0.8rem; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  margin-top: 14px;
  font-size: 0.9rem;
}
kbd {
  border-radius: 7px;
  padding: 2px 7px;
  color: var(--text);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.15);
}

.leaderboard { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 9px; }
.leaderboard li {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  color: var(--muted);
}
.leaderboard li:nth-child(1) { color: var(--text); background: linear-gradient(90deg, rgba(255,209,102,0.22), rgba(255,255,255,0.08)); }
.rank { color: var(--accent); font-weight: 900; }
.name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 800; }
.score { color: var(--green); font-weight: 900; }
.hint { margin-top: 14px; color: var(--muted); font-size: 0.88rem; }

@media (max-width: 860px) {
  body { padding: 12px; align-items: start; }
  .shell { grid-template-columns: 1fr; gap: 14px; }
  .game-card, .leaderboard-card { padding: 14px; border-radius: 22px; }
  .canvas-wrap { max-height: none; }
}