/* ═══════════════════════════════════════════════════
   footer.css — BibliotecaSA · Upgrade Visual Premium
   ═══════════════════════════════════════════════════ */

.footer {
  background: linear-gradient(
    180deg,
    rgba(9, 14, 63, 1) 0%,
    #0a1040 40%,
    #090e3f 100%
  );
  border-top: 1px solid rgba(112, 163, 240, 0.1);
  color: #e7e7e7;
  padding: 72px 0 32px;
  position: relative;
  overflow: hidden;
}

/* Glow sutil no topo do footer */
.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(112, 163, 240, 0.35) 50%,
    transparent 100%
  );
  pointer-events: none;
}

.container {
  margin-left: 230px;

  padding: 67px 48px 100px 48px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 48px;
  margin-bottom: 56px;
}

.footer-section h3 {
  font-family: "DM Sans", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: rgba(232, 236, 244, 0.9);
  margin: 0 0 20px;
}

.footer-section h3 i {
  color: rgba(112, 163, 240, 0.6);
  margin-right: 6px;
  font-size: 10px;
}

.footer-section p {
  font-family: "DM Sans", sans-serif;
  font-size: 13px;
  font-weight: 300;
  color: rgba(136, 146, 180, 0.8);
  line-height: 1.9;
  margin: 0 0 4px;
}

.footer-section a {
  font-family: "DM Sans", sans-serif;
  font-size: 13px;
  font-weight: 300;
  color: rgba(136, 146, 180, 0.75);
  text-decoration: none;
  transition: color 0.2s ease;
  line-height: 1.9;
  display: inline-block;
}

.footer-section a:hover {
  color: rgba(122, 173, 255, 0.9);
}

/* Ícones de redes sociais */
.footer-section [style*="font-size: 1.5rem"],
.footer-section a[style*="font-size: 1.5rem"] {
  color: rgba(136, 146, 180, 0.6) !important;
  font-size: 16px !important;
  transition:
    color 0.2s ease,
    transform 0.2s ease;
  display: inline-block;
}

.footer-section a:hover i {
  color: rgba(122, 173, 255, 0.85);
}

/* Linha divisória */
.footer-bottom {
  border-top: 1px solid rgba(112, 163, 240, 0.08);
  padding-top: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.footer-bottom p {
  font-family: "DM Sans", sans-serif;
  font-size: 11px;
  font-weight: 400;
  color: rgba(136, 146, 180, 0.4);
  margin: 0;
  letter-spacing: 0.3px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 32px;
  }
  .footer {
    padding: 56px 0 28px;
  }
  .footer-content {
    gap: 36px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 24px;
  }
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}