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

body {
  font-family: system-ui, sans-serif;
  background: #1a1a1a;
  color: #e2e8f0;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px;
}

h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #f1f5f9;
}

#level-label {
  color: #94a3b8;
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

#canvas-wrap {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

#game-canvas {
  display: block;
  cursor: crosshair;
  touch-action: none;
}

#message {
  font-weight: 700;
  font-size: 1rem;
  min-height: 1.5rem;
  color: #22c55e;
  letter-spacing: 0.01em;
}