/* ========================================
   AN NHIÊN HOMESTAY — Footer
   ======================================== */

.footer {
  background: var(--color-brown-dark);
  color: var(--color-cream);
  padding-block: var(--space-xl) var(--space-md);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* ── Brand Column ── */
.footer__brand {
  max-width: 350px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.footer__logo-img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.footer__logo-text {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-cream-light);
}

.footer__tagline {
  font-size: var(--fs-small);
  color: var(--color-brown-light);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-md);
}

/* ── Footer Social Icons ── */
.footer__social {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-cream);
  font-size: 1rem;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.footer__social-link:hover {
  background: var(--color-green);
  border-color: var(--color-green);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(92, 122, 92, 0.3);
}

.footer__social-link svg {
  fill: currentColor;
}

/* ── Quick Links ── */
.footer__heading {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-cream);
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__link {
  font-size: var(--fs-small);
  color: var(--color-brown-light);
  transition: all var(--duration-fast) var(--ease-smooth);
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer__link::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 1px;
  background: var(--color-green-light);
  transition: width var(--duration-normal) var(--ease-smooth);
}

.footer__link:hover {
  color: var(--color-cream-light);
  transform: translateX(4px);
}

.footer__link:hover::before {
  width: 12px;
}

/* ── Contact Column ── */
.footer__contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-small);
  color: var(--color-brown-light);
  margin-bottom: 12px;
}

.footer__contact-item span:first-child {
  font-size: 1.1rem;
}

.footer__contact-item a {
  color: var(--color-brown-light);
  transition: color var(--duration-fast) var(--ease-smooth);
}

.footer__contact-item a:hover {
  color: var(--color-cream-light);
}

/* ── Bottom Bar ── */
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  font-size: var(--fs-caption);
  color: var(--color-brown-medium);
}

.footer__copyright {
  display: flex;
  align-items: center;
  gap: 4px;
}

.footer__made-with {
  display: flex;
  align-items: center;
  gap: 4px;
}

.footer__heart {
  color: #e74c3c;
  animation: footerHeartbeat 1.5s ease-in-out infinite;
}

@keyframes footerHeartbeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-green);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-normal) var(--ease-smooth);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-green-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .back-to-top {
    right: var(--space-sm);
    bottom: var(--space-sm);
  }
}