:root {
  color-scheme: dark;
  --bg: #05070f;
  --panel: rgba(10, 17, 32, 0.78);
  --panel-border: rgba(111, 239, 255, 0.24);
  --text: #e8fbff;
  --muted: #9db3c1;
  --cyan: #5ff5ff;
  --magenta: #ff4fd8;
  --red: #ff445e;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 10%, rgba(95, 245, 255, 0.18), transparent 28rem),
    radial-gradient(circle at 80% 20%, rgba(255, 79, 216, 0.13), transparent 24rem),
    linear-gradient(180deg, #05070f 0%, #08101f 58%, #03050c 100%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(95, 245, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 245, 255, 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at center, black 0%, transparent 78%);
}
.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}
.hero { margin-bottom: 24px; }
.eyebrow {
  margin: 0 0 10px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
}
h1 {
  margin: 0;
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
  text-shadow: 0 0 24px rgba(95, 245, 255, 0.24), 8px 0 0 rgba(255, 79, 216, 0.14);
}
.tagline {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.65;
}
.game-card {
  padding: 14px;
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.48), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
}
canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  border-radius: 18px;
  background: #03060d;
}
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 4px 2px;
  color: var(--muted);
  font-size: 0.92rem;
}
.controls span {
  padding: 8px 10px;
  border: 1px solid rgba(157, 179, 193, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}
.controls strong { color: var(--text); margin-right: 6px; }
.about {
  margin-top: 28px;
  padding: 24px;
  border: 1px solid rgba(157, 179, 193, 0.16);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.035);
}
.about h2 { margin: 0 0 8px; }
.about p { margin: 0; color: var(--muted); line-height: 1.7; }
@media (max-width: 720px) {
  .page-shell { width: min(100% - 18px, 1120px); padding-top: 24px; }
  .game-card { padding: 8px; border-radius: 18px; }
  canvas { border-radius: 14px; }
  .controls { font-size: 0.8rem; }
}