/* Back to Top Button - Terminal Style */
.back-to-top {
  position: fixed;
  bottom: 220px;
  right: 25px;
  width: 45px;
  height: 45px;
  background: #1a1a1a;
  color: #00ffaa;
  border: 2px solid #00ffaa;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.2rem;
  font-family: 'Fira Code', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
  z-index: 9997;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: #00ffaa;
  color: #1a1a1a;
  transform: translateY(-3px);
}

@media (max-width: 480px) {
  .back-to-top {
    bottom: 150px;
    right: 15px;
    width: 40px;
    height: 40px;
  }
}