/* =============================================
   FOOTER — Esquivel
   ============================================= */

.footer {
  background: #0D0D0D;
  padding: 3.5rem 3rem 2rem;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--vet-primary), var(--vet-accent) 40%, var(--per-gold) 60%, var(--per-primary));
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

/* Brand */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer__brand-logo img {
  height: 44px;
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.footer__brand-name span {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

.footer__brand-desc {
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.45);
  font-style: italic;
  max-width: 280px;
}

/* Columnas */
.footer__col-title {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__col-title--vet { color: var(--vet-accent); opacity: 0.7; }
.footer__col-title--per { color: var(--per-gold); opacity: 0.7; }

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__links a {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s ease;
  line-height: 1.5;
}

.footer__links a:hover { color: var(--white); }

/* Bottom bar */
.footer__bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__copy {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.3);
}

.footer__copy a {
  color: rgba(255,255,255,0.45);
  transition: color 0.2s ease;
}
.footer__copy a:hover { color: rgba(255,255,255,0.75); }

.footer__social {
  display: flex;
  gap: 0.6rem;
}

.footer__social-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: all 0.25s ease;
}
.footer__social-btn:hover {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  transform: translateY(-2px);
}

/* Botón flotante WhatsApp */
.fab-whatsapp {
  position: fixed;
  bottom: 1.8rem;
  right: 1.8rem;
  z-index: 900;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s ease;
  animation: fabPulse 3s ease-in-out infinite;
}

.fab-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37,211,102,0.6);
  animation: none;
}

.fab-whatsapp svg {
  width: 28px;
  height: 28px;
  fill: var(--white);
}

.footer-credit {
  font-size: 0.72rem;
  color: #2f8f8b;
  margin-top: 1rem;
  letter-spacing: 0.05em;
}

.footer-credit a {
  color: #2f8f8b;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-credit a:hover {
  color: #ffffff;
}

@keyframes fabPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.45); }
  50%       { box-shadow: 0 4px 30px rgba(37,211,102,0.7), 0 0 0 8px rgba(37,211,102,0.1); }
}

/* Animaciones de entrada */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s var(--ease-out);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

@media (max-width: 900px) {
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer { padding: 2.5rem 1.5rem 1.5rem; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}