:root {
  color-scheme: dark;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(circle at top, #181f35, #060912 72%);
}

#game {
  width: 100%;
  height: 100%;
  display: block;
}

#ui {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 10;
  max-width: 540px;
  background: rgba(8, 13, 24, 0.75);
  border: 1px solid rgba(142, 165, 255, 0.35);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  padding: 14px 16px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

h1 {
  margin: 0 0 6px;
  font-size: 1.2rem;
}

p {
  margin: 0 0 10px;
  color: #c7d2ff;
  line-height: 1.35;
}

.stats {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-weight: 700;
}

#restart {
  margin-top: 12px;
  background: linear-gradient(90deg, #4d67ff, #7b88ff);
  border: 0;
  border-radius: 8px;
  color: white;
  padding: 8px 14px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

#restart:hover {
  filter: brightness(1.08);
}