footer {
  padding: 40px 0;
  background-color: #111;
  border-top: 1px solid var(--border-color);
}
.footer-left {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-links a:not(:last-child) {
  margin-right: 20px;
}
.back-to-top {
  width: 40px;
  height: 40px;
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.back-to-top:hover {
  background-color: var(--primary);
  color: var(--text-primary);
  border-color: var(--primary);
}