:root {
  color-scheme: light;
  --ink: #243044;
  --muted: #637086;
  --paper: #fffaf1;
  --panel: rgba(255,255,255,.78);
  --blue: #5ca6ff;
  --peach: #ffa36b;
  --green: #4fb06d;
  --shadow: 0 18px 45px rgba(47, 62, 86, .18);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-rounded, "SF Pro Rounded", Inter, system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(92,166,255,.35), transparent 34rem),
    radial-gradient(circle at 82% 12%, rgba(255,163,107,.32), transparent 26rem),
    linear-gradient(145deg, #f5fbff 0%, #fff5df 100%);
}
.shell { width: min(1080px, 94vw); margin: 0 auto; padding: 22px 0 34px; }
.top-links { display: flex; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.top-links a {
  color: var(--ink); text-decoration: none; font-weight: 800;
  background: rgba(255,255,255,.72); border: 1px solid rgba(36,48,68,.12);
  padding: 9px 13px; border-radius: 999px; box-shadow: 0 8px 22px rgba(36,48,68,.08);
}
.hero { text-align: center; margin-bottom: 18px; }
.eyebrow { margin: 0 0 6px; color: var(--muted); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: .78rem; }
h1 { margin: 0; font-size: clamp(2.3rem, 8vw, 5.4rem); line-height: .9; letter-spacing: -.06em; }
.lede { max-width: 760px; margin: 14px auto 0; color: var(--muted); font-size: clamp(1rem, 2.6vw, 1.2rem); }
.panel {
  background: var(--panel); border: 1px solid rgba(36,48,68,.12); border-radius: 24px;
  box-shadow: var(--shadow); backdrop-filter: blur(12px); padding: 16px;
}
.status-panel { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.status-panel div { background: rgba(255,255,255,.62); border-radius: 18px; padding: 12px; }
.label { display:block; color: var(--muted); font-size: .76rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 800; margin-bottom: 4px; }
.status-panel strong { font-size: 1.35rem; }
.game-panel { padding: 12px; }
canvas { width: 100%; aspect-ratio: 16/9; display: block; border-radius: 18px; background: linear-gradient(#bfeaff 0%, #eaf9ff 52%, #dff2c6 52%, #cbe8ac 100%); touch-action: none; }
.message { margin: 12px 4px 2px; text-align: center; color: var(--muted); font-weight: 750; min-height: 1.35em; }
.controls { margin-top: 16px; display: grid; grid-template-columns: 1fr 1fr auto auto auto; align-items: end; gap: 13px; }
.controls label { font-weight: 850; color: var(--ink); }
.controls input { width: 100%; margin-top: 7px; accent-color: var(--blue); }
button {
  border: 0; cursor: pointer; border-radius: 16px; padding: 13px 16px;
  background: #274c77; color: white; font-weight: 900; box-shadow: 0 10px 20px rgba(39,76,119,.22);
}
button.secondary { background: #eef3f8; color: var(--ink); box-shadow: inset 0 0 0 1px rgba(36,48,68,.12); }
button:disabled { opacity: .45; cursor: not-allowed; }
.how { margin-top: 16px; }
.how h2 { margin: 0 0 8px; }
.how ul { margin: 0; padding-left: 20px; color: var(--muted); line-height: 1.55; }
@media (max-width: 760px) {
  .status-panel { grid-template-columns: repeat(2, 1fr); }
  .controls { grid-template-columns: 1fr; }
  button { width: 100%; }
}