.footer,
.top-link {
    font-size: 12px;
    color: var(--secondary);
}

.footer {
    max-width: calc(var(--main-width) + var(--gap) * 2);
    margin: auto;
    padding: calc((var(--footer-height) - var(--gap)) / 2) var(--gap);
    text-align: center;
    line-height: 24px;
}

.footer span {
    margin-inline-start: 1px;
    margin-inline-end: 1px;
}

.footer span:last-child {
    white-space: nowrap;
}

.footer a {
    color: var(--primary);
}

.footer a:hover {
    text-decoration: underline;
}

.top-link {
  visibility: hidden;
  position: fixed; 
  bottom: 30px; 
  right: 30px; 
  z-index: 99; 
  border: none; 
  outline: none; 
  background-color: var(--tertiary); 
  color: black; 
  cursor: pointer; 
  padding: 14px; 
  border-radius: 5px; 
  font-size: 18px; 
  transition: visibility 0.5s, opacity 0.8s linear;
}

.footer a:hover,
.top-link:hover {
    color: var(--primary);
}

.top-link:focus,
#theme-toggle:focus {
    outline: 0;
}