#header-18-brand {
  position: sticky;
  top: 0;
  z-index: 1030;
  background-color: #ffffff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.06);
  padding: 0.9rem 0;
}
#header-18-brand .navbar-brand img {
  max-height: 42px;
}
#header-18-brand .navbar-brand .site-name-text {
  font-size: 1.65rem;
  font-weight: 600;
  color: #212529;
}
#header-18-brand .navbar-nav .nav-item {
  margin: 0 0.5rem;
}
#header-18-brand .navbar-nav .nav-link {
  font-weight: 500;
  color: #343a40;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: color 0.2s ease, background-color 0.2s ease;
}
#header-18-brand .navbar-nav .nav-link:hover,
#header-18-brand .navbar-nav .nav-link.active {
  color: #007bff;
  background-color: rgba(0, 123, 255, 0.07);
}
#header-18-brand .header-utility-area {
  display: flex;
  align-items: center;
  margin-left: auto;
}
#header-18-brand .utility-icon-link,
#header-18-brand .social-icon-link {
  color: #495057;
  font-size: 1.15rem;
  padding: 0.6rem;
  margin-left: 0.25rem;
  border-radius: 50%;
  transition: color 0.2s ease, background-color 0.2s ease;
  line-height: 1;
}
#header-18-brand .utility-icon-link:hover,
#header-18-brand .social-icon-link:hover {
  color: #007bff;
  background-color: rgba(0, 123, 255, 0.1);
}
#header-18-brand .social-icons-group {
  display: flex;
  align-items: center;
  margin-left: 0.5rem;
  padding-right: 0.5rem;
}
#header-18-brand .header-cta-button {
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.55rem 1.1rem;
  border-radius: 20px;
  margin-left: 0.5rem;
  white-space: nowrap;
}
#header-18-brand .navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}
#header-18-brand .navbar-toggler:focus {
  box-shadow: none;
}
@media (max-width: 991.98px) {
  #header-18-brand .navbar-collapse {
    margin-top: 0.9rem;
    border-top: 1px solid #e9ecef;
    padding-top: 0.9rem;
    background-color: #fff;
  }
  #header-18-brand .navbar-nav {
    align-items: flex-start;
    margin-bottom: 0.75rem;
  }
  #header-18-brand .navbar-nav .nav-item {
    width: 100%;
    margin: 0.1rem 0;
  }
  #header-18-brand .navbar-nav .nav-link {
    padding: 0.8rem 1rem;
    display: block;
  }
  #header-18-brand .header-utility-area {
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    padding-top: 0.75rem;
    border-top: 1px solid #f0f0f0;
  }
  #header-18-brand .utility-icon-link {
    display: block;
    text-align: left;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    padding: 0.8rem 1rem;
  }
  #header-18-brand .utility-icon-link:hover {
    background-color: rgba(0, 123, 255, 0.07);
  }
  #header-18-brand .social-icons-group {
    justify-content: flex-start;
    margin-left: 0;
    padding-right: 0;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
  }
  #header-18-brand .social-icon-link {
    padding: 0.6rem 0.5rem;
  }
  #header-18-brand .header-cta-button {
    width: 100%;
    text-align: center;
    margin-left: 0;
    padding: 0.75rem 1rem;
  }
}



#link-section-5 {
  position: relative;
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: #fff;
  text-align: center;
  overflow: hidden;
}

/* Sóng phía trên */
#link-section-5 .wave-top {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  line-height: 0;
  transform: translateY(-1px);
}
#link-section-5 .wave-top svg {
  display: block;
  width: 100%;
  height: 80px;
}

/* Sóng phía dưới */
#link-section-5 .wave-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
  transform: translateY(1px) rotate(180deg);
}
#link-section-5 .wave-bottom svg {
  display: block;
  width: 100%;
  height: 80px;
}

#link-section-5 .section-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}
#link-section-5 .section-subtitle {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Container liên kết */
#link-section-5 .link-container {
  max-width: 1100px;
  margin: 0 auto;
}
#link-section-5 .link-item {
  background: rgba(255,255,255,0.2);
  border-radius: 0.75rem;
  padding: 1.5rem;
  text-decoration: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, transform 0.3s;
}
#link-section-5 .link-item:hover {
  background: rgba(255,255,255,0.35);
  transform: translateY(-4px);
}
#link-section-5 .link-item i {
  font-size: 1.25rem;
  margin-right: 0.5rem;
}





/* Footer-2 Fully Revised Styles */
#footer-2 {
  background-color: var(--footer-bg-color, #343a40);
  color: var(--footer-text-color, #f8f9fa);
  padding: 3.5rem 0 2.5rem 0; /* Added bottom padding */
  font-size: 0.9rem;
}
#footer-2 .footer-logo {
  max-height: 50px;
  margin-bottom: 1rem;
  /* If logo is dark and needs to be light on dark BG */
  /* filter: brightness(0) invert(1) opacity(0.9);*/
}
#footer-2 .brand-column-text {
  font-size: 0.85rem;
  line-height: 1.6;
  opacity: 0.8;
  margin-bottom: 1.5rem;
}
#footer-2 .social-icons-inline a {
  color: var(--footer-text-color, #f8f9fa);
  margin-right: 1rem;
  font-size: 1.3rem;
  opacity: 0.7;
  transition: opacity 0.2s ease-in-out, color 0.2s ease-in-out;
}
#footer-2 .social-icons-inline a:last-child {
  margin-right: 0;
}
#footer-2 .social-icons-inline a:hover {
  opacity: 1;
  color: var(--footer-link-color, #17a2b8);
}
#footer-2 .footer-column-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--footer-title-color, #ffffff);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--footer-link-color, #17a2b8);
  display: inline-block; /* To make border only as wide as text */
}
#footer-2 .footer-navigation-list {
  list-style: none;
  padding-left: 0;
}
#footer-2 .footer-navigation-list li {
  margin-bottom: 0.6rem;
}
#footer-2 .footer-navigation-list a {
  color: var(--footer-link-color, #17a2b8);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
#footer-2 .footer-navigation-list a:hover,
#footer-2 .footer-navigation-list a.active {
  color: var(--footer-link-hover-color, #138496);
  padding-left: 5px;
}
#footer-2 .contact-details-list p,
#footer-2 .contact-details-list a {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--footer-text-color, #f8f9fa);
  opacity: 0.9;
  text-decoration: none;
}
#footer-2 .contact-details-list i {
  width: 18px;
  margin-right: 8px;
  color: var(--footer-link-color, #17a2b8);
}
#footer-2 .contact-details-list a:hover {
  color: var(--footer-link-hover-color, #138496);
  opacity: 1;
}
#footer-2 .footer-copyright-section {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1); /* Separator for copyright */
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.7;
}
#footer-2 .footer-copyright-section p {
  margin-bottom: 0;
}
/* Responsive */
@media (max-width: 767.98px) {
  #footer-2 .footer-column {
    margin-bottom: 2rem;
  }
  #footer-2 .footer-logo,
  #footer-2 .social-icons-inline {
    display: block;
    text-align: center; /* Center logo and social icons on mobile */
  }
  #footer-2 .social-icons-inline a {
    margin: 0 0.5rem; /* Adjust spacing for centered icons */
  }
  #footer-2 .brand-column-text {
    text-align: center;
  }
}