body {
  margin: 0;
  padding: 0;
  font-family: 'Orbitron', sans-serif;
  background: radial-gradient(circle at center, #1b1b2f, #121212);
  color: #f0f0f0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.splash {
  text-align: center;
  margin-top: 30px;
}

#grid {
  margin: 20px auto;
  display: grid;
  grid-template-columns: repeat(8, 60px);
  grid-template-rows: repeat(8, 60px);
  gap: 6px;
  width: max-content;
}

.pad {
  width: 60px;
  height: 60px;
  background: #333;
  border: 2px solid #555;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0, 255, 150, 0.2);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.pad:hover {
  background: #555;
  transform: scale(1.05);
}

.pad.loaded {
  background: #00ffaa;
  box-shadow: 0 0 12px #00ffaa;
}