/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  position: relative;
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
}

.site-footer__main {
  padding-block: 100px;
}

.site-footer__col--center {
  text-align: center;
}

.site-footer__logo {
  width: auto;
  height: 80px;
  margin-bottom: var(--space-md);
}

.site-footer__text {
  margin-bottom: var(--space-md);
}

.site-footer__heading {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.site-footer__list {
  margin-bottom: var(--space-sm);
}

.site-footer__list li {
  padding: 2px 0;
}

.site-footer a:not(.social-links__link):not(.back-to-top) {
  color: var(--color-footer-text);
}

.site-footer a:not(.social-links__link):not(.back-to-top):hover {
  color: var(--color-primary);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-links__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 18px;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-links__link:hover,
.social-links__link:focus {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.site-footer__copyright {
  padding: var(--space-md) var(--container-gutter);
  text-align: center;
  background-color: var(--color-footer-bottom);
}

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 24px;
  color: var(--color-white);
  background-color: var(--color-primary);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

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

.back-to-top:hover,
.back-to-top:focus {
  color: var(--color-white);
}