/** ACG Knowledge Handbook — Home Button Styles */
#home-button {
  position: fixed;
  bottom: 5.5rem;
  right: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #1A1A2E;
  color: #fff;
  border: none;
  box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 90;
  transition: transform 0.2s, background 0.2s;
  text-decoration: none;
}
#home-button:hover {
  transform: scale(1.1);
  background: #8B0000;
}
#home-button .home-label {
  position: absolute;
  right: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: #1A1A2E;
  color: #fff;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
#home-button:hover .home-label { opacity: 1; }

@media (max-width: 768px) {
  #home-button { bottom: 4.5rem; right: 1rem; width: 42px; height: 42px; }
}