/* === Space Invaders — Game-specific Styles === */

#game-canvas {
  display: block;
  background: #000;
  border: 2px solid rgba(0, 240, 255, 0.25);
  border-radius: 4px;
  box-shadow:
    0 0 20px rgba(0, 240, 255, 0.1),
    inset 0 0 60px rgba(0, 0, 0, 0.8);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* Glow pulse on canvas border */
@keyframes canvasGlow {
  0%, 100% {
    border-color: rgba(0, 240, 255, 0.25);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.1), inset 0 0 60px rgba(0, 0, 0, 0.8);
  }
  50% {
    border-color: rgba(0, 240, 255, 0.45);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.2), inset 0 0 60px rgba(0, 0, 0, 0.8);
  }
}

#game-canvas {
  animation: canvasGlow 4s ease-in-out infinite;
}

/* Override game page background for deeper space feel */
.game-page {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(10, 0, 40, 0.4) 0%, transparent 70%),
    radial-gradient(ellipse at 80% 30%, rgba(0, 10, 50, 0.3) 0%, transparent 70%),
    var(--bg-dark);
}

/* Ensure canvas scales nicely on mobile */
@media (max-width: 520px) {
  #game-canvas {
    border-width: 1px;
    border-radius: 2px;
  }

  .game-area {
    padding: 0 4px;
  }
}