:root {
  --bg: #0f172a;
  --bg-2: #1e293b;
  --text: #f8fafc;
  --accent: #38bdf8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}

/* Spielfeld füllt fast den ganzen Bildschirm. */
#game {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  background: #2f6b3a;
  touch-action: none;
}