/* Footer unificado — SuperComputadoraIA */
.site-footer {
  background: #0b1220;
  color: #8a96a8;
  padding: 20px clamp(16px, 4vw, 48px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-footer__inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer__brand {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.site-footer__year {
  color: #8a96a8;
}

.site-footer__name {
  color: #22c8e8;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.site-footer__name:hover {
  color: #5ddff5;
}

.site-footer__social {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  line-height: 0;
  opacity: 0.92;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.site-footer__social a:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.site-footer__social svg {
  width: 24px;
  height: 24px;
  display: block;
}

.site-back-top {
  position: fixed;
  right: clamp(16px, 4vw, 48px);
  bottom: 96px;
  z-index: 900;
  border: 0;
  background: transparent;
  color: #8a96a8;
  cursor: pointer;
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease, color 0.2s ease;
}

.site-back-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.site-back-top:hover {
  color: #22c8e8;
}

@media (max-width: 640px) {
  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .site-footer__social {
    justify-content: flex-start;
  }

  .site-back-top {
    bottom: 108px;
  }
}