:where(.site-footer),
:where(.site-footer) *,
:where(.site-footer) *::before,
:where(.site-footer) *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:where(.site-footer) ul {
  list-style: none;
}

.site-footer {
  --m: 4rem;
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  align-items: flex-end;
  width: 100%;
  padding: 5rem 2vw;
  background: #000;
  color: #d5d5d5;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 300;
  font-size: calc(0.3 * var(--m));
  line-height: 1.5;
}

/* Columns */
.site-footer__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 28%;
  padding: calc(0.3 * var(--m)) calc(0.8 * var(--m));
}

.site-footer__col--brand {
  padding-inline: 0;
}

.site-footer__col--panel {
  background-color: #121212;
  border-radius: calc(0.5 * var(--m));
}

/* Logo card */
.footer-card {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: calc(2.5 * var(--m));
  aspect-ratio: 1 / 1;
  margin-bottom: calc(0.5 * var(--m));
  padding: 0.35rem;
  overflow: hidden;
  border: 2px solid #fff;
  border-radius: calc(0.25 * var(--m));
  background: transparent;
  box-shadow: 0 0 0 0 #000, 0 0 0 0 #fff;
  transition: box-shadow 0.3s ease;
}

.footer-card:hover,
.footer-card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px #000, 0 0 0 6px #fff;
}

.footer-card__logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.footer-card__cover {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  text-align: center;
  background: #000;
  color: #fff;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-card:hover .footer-card__cover,
.footer-card:focus-visible .footer-card__cover {
  transform: translateY(0);
}

.footer-card__cover h3 {
  font-family: "Orbitron", sans-serif;
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.footer-card__cover p {
  font-size: 0.55rem;
  letter-spacing: 0.04em;
  color: #d5d5d5;
}

/* Social icons */
.site-footer__social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.site-footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: calc(0.1 * var(--m));
  background-color: rgba(255, 255, 255, 0.1);
  color: #e5e5e5;
  font-size: 1.25rem;
  text-decoration: none;
  transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.site-footer__social-link:hover,
.site-footer__social-link:focus-visible {
  transform: translateY(-5px);
  background-color: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.site-footer__copy {
  margin-top: 1.5rem;
  color: #818181;
  font-size: smaller;
}

/* Links */
.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.site-footer__link {
  display: inline-block;
  color: #d5d5d5;
  text-decoration: none;
  transition: transform 0.3s ease, color 0.3s ease;
}

.site-footer__link:hover,
.site-footer__link:focus-visible {
  transform: translateX(6px);
  color: #fff;
}

@media (max-width: 1000px) {
  .site-footer {
    --m: 3rem;
  }
}

@media (max-width: 700px) {
  .site-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    padding: 3rem 1.25rem;
  }

  .site-footer__col {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .footer-card__cover,
  .site-footer__social-link,
  .site-footer__link {
    transition-duration: 0.01ms;
  }
}