body {
  margin: 0;
  overflow: hidden;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

#controls {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  gap: 12px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  padding: 16px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

button {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  background: white;
  color: #333;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

button.active {
  background: #333;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}