footer {
  background: #FFFCEE;              /* Nền vàng kem nhẹ */
  color: #1C4278;                   /* Xanh navy chủ đạo */
  font-size: 14px;
  text-align: center;
  padding: 30px 0;
  border-top: 1px solid rgba(28, 66, 120, 0.1);
}

/* --- Navigation Links --- */
footer .nav-links a {
  color: #1C4278;
  margin: 0 12px;
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color 0.3s ease;
}

footer .nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 1.5px;
  background: #FBDC47;
  transition: width 0.3s ease;
}

footer .nav-links a:hover {
  color: #FBDC47;
}

footer .nav-links a:hover::after {
  width: 100%;
}

/* --- Social Icons --- */
footer .social-icons a {
  color: #1C4278;
  font-size: 1.4rem;
  margin: 0 10px;
  transition: color 0.3s ease, transform 0.3s ease;
}

footer .social-icons a:hover {
  color: #FBDC47;
  transform: scale(1.15);
}

/* --- Logo --- */
footer .footer-logo img {
  height: 40px;
  transition: transform 0.3s ease;
}

footer .footer-logo:hover img {
  transform: scale(1.05);
}

/* --- Copyright --- */
footer p {
  font-size: 13px;
  color: #1C4278;
  opacity: 0.8;
  margin-top: 10px;
}

/* --- Responsive --- */
@media (max-width: 576px) {
  footer .nav-links a {
    display: block;
    margin: 6px 0;
  }
  footer {
    padding: 25px 15px;
  }
}