/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-black);
  color: var(--color-gray-400);
}

/* ---- Main Footer ---- */
.footer__main {
  padding: var(--space-16) 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-12);
}

/* Brand Column */
.footer__brand img {
  height: 40px;
  margin-bottom: var(--space-6);
}

.footer__brand p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-500);
  margin-bottom: var(--space-6);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-dark-soft);
  color: var(--color-gray-400);
  transition: all var(--transition);
}

.footer__social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-black);
}

.footer__social-link svg {
  width: 18px;
  height: 18px;
}

/* Footer Columns */
.footer__title {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--color-white);
  margin-bottom: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__link:hover {
  color: var(--color-primary);
}

/* Contact Column */
.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.footer__contact-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-top: 2px;
}

.footer__contact-text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.footer__contact-text a:hover {
  color: var(--color-primary);
}

/* ---- Departments Grid ---- */
.footer__departments {
  margin-top: var(--space-12);
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-dark-soft);
}

.footer__dept-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.footer__dept {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer__dept-name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.footer__dept-link {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  transition: color var(--transition);
  word-break: break-word;
}

.footer__dept-link:hover {
  color: var(--color-primary);
}

@media (max-width: 1024px) {
  .footer__dept-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .footer__dept-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
}

/* ---- Bottom Bar ---- */
.footer__bottom {
  border-top: 1px solid var(--color-dark-soft);
  padding: var(--space-6) 0;
}

.footer__bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.footer__credit {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.footer__credit a {
  color: var(--color-gray-500);
  transition: color var(--transition);
}

.footer__credit a:hover {
  color: var(--color-primary);
}

/* ---- WhatsApp Button ---- */
.whatsapp-btn {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-whatsapp);
  width: 56px;
  height: 56px;
  background-color: var(--color-whatsapp);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: whatsapp-pulse 2s infinite;
}

.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
  animation: none;
}

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

@keyframes whatsapp-pulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
  70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10);
  }
}

@media (max-width: 640px) {
  .footer__main {
    padding: var(--space-10) 0;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__title {
    margin-bottom: var(--space-4);
  }

  .footer__bottom .container {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }

  .footer__copyright,
  .footer__credit {
    font-size: var(--text-xs);
  }

  .whatsapp-btn {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 50px;
    height: 50px;
  }

  .whatsapp-btn svg {
    width: 24px;
    height: 24px;
  }
}