.site-footer {
  padding: 44px 0 25px;
  background: linear-gradient(165deg, #02233f 0%, #054a87 60%, #043d6e 100%);
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, #d67a08, #f49521 50%, #ffb85c) 1;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.86rem;
}
.site-footer .brand {
  color: #ffffff;
  margin-bottom: 15px;
}
.site-footer h3 {
  margin: 0 0 12px;
  color: #ffffff;
  font-size: clamp(0.9rem, 1vw, 1rem);
}
.site-footer p {
  font-size: clamp(0.86rem, 1vw, 0.95rem);
}
.site-footer a:hover {
  color: #ffffff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr auto;
  gap: 40px;
  padding-bottom: 35px;
  align-items: start;
}

.footer-logo {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.footer-logo .header-logo-image img,
.footer-logo .header-logo-custom .custom-logo,
.footer-logo .header-logo-widget img,
.footer-logo .header-logo-area img {
  display: block;
  width: auto;
  max-width: 250px;
  max-height: 66px;
  object-fit: contain;
}

.footer-logo .brand {
  margin-bottom: 0;
}

.footer-grid > div:last-child {
  text-align: center;
}

.footer-libro {
  display: flex;
  width: fit-content;
  justify-content: center;
  margin: 12px auto 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.footer-libro:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.footer-libro img {
  display: block;
  width: auto;
  margin-inline: auto;
  max-width: 180px;
  max-height: 120px;
  object-fit: contain;
  border-radius: 6px;
}

.footer-libro-text {
  font-weight: 700;
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.78rem;
}

@media (max-width: 850px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    display: block;
  }
}