#header-10 {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%; /* chiếm toàn chiều ngang */
  height: 64px; /* hoặc auto tuỳ logo */
  background-color: #1a1a1a;
  color: #fff;
  z-index: 1050;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}
/* logo */
#header-10 .navbar-brand img {
  max-height: 48px;
  max-width: 140px;
  margin-bottom: 0; /* bỏ khoảng trống cũ */
}
/* thanh điều hướng ngang */
#header-10 nav {
  width: auto;
}
#header-10 .navbar-nav {
  flex-direction: row; /* xếp ngang */
  align-items: center;
  gap: 0.25rem;
  margin: 0;
}
#header-10 .nav-item {
  width: auto;
}
#header-10 .nav-link {
  color: #ccc;
  font-weight: 500;
  padding: 0.75rem 1rem;
  transition: all 0.3s;
}
#header-10 .nav-link.active,
#header-10 .nav-link:hover {
  color: #fff;
  background-color: #007bff;
  border-radius: 6px;
}
/* nút CTA nằm bên phải */
#header-10 .cta-button {
  margin-left: 1rem;
  background-color: #00b4d8;
  color: #fff;
  padding: 0.6rem 1.25rem;
  border-radius: 25px;
  font-weight: 600;
  transition: 0.3s ease;
}
#header-10 .cta-button:hover {
  background-color: #0096c7;
}
/* ===== Mobile (<= 991.98 px) ===== */
@media (max-width: 991.98px) {
  #header-10 {
    height: auto; /* cho phép header cao dần */
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
  }
  /* Ẩn menu, bật khi nhấn nút burger (tuỳ bạn thêm JS-toggle) */
  #header-10 nav {
    order: 3;
    width: 100%;
    display: none;
  }
  #header-10.active nav {
    display: block;
  }
  #header-10 .navbar-nav {
    flex-direction: column;
    align-items: flex-start;
  }
  #header-10 .cta-button {
    margin: 0.5rem 0 0;
  }
}



#link-section-6 {
  position: relative;
  overflow: hidden;
  padding: 6rem 0;
  color: #fff;
  text-align: center;
}

/* Animated gradient background */
#link-section-6::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    45deg,
    var(--gc1),
    var(--gc2),
    var(--gc3),
    var(--gc4)
  );
  background-size: 600% 600%;
  animation: gradientBG var(--anim-duration) ease infinite;
  z-index: -1;
}

@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

#link-section-6 .section-title {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
}

#link-section-6 .section-subtitle {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.85;
}

#link-section-6 .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-6 .link-item:hover {
  background: rgba(255,255,255,0.35);
  transform: translateY(-4px);
}

#link-section-6 .link-item i {
  font-size: 1.25rem;
  margin-right: 0.5rem;
}






/* Footer-13 Styles - Minimalist, Text-Focused */
#footer-13 {
  background-color: #f8f9fa; /* Light grey background */
  color: #495057; /* Dark grey text */
  padding: 2.5rem 0;
  font-size: 0.875rem; /* Slightly smaller base font */
  border-top: 1px solid #dee2e6; /* Standard Bootstrap border color */
}
#footer-13 .footer-brand-info .site-name-link-f13 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #212529; /* Bootstrap's darker grey / almost black */
  text-decoration: none;
}
#footer-13 .footer-brand-info .site-name-link-f13:hover {
  color: #007bff; /* Standard Bootstrap primary color */
}
#footer-13 .footer-brand-info .site-logo-f13 {
  max-height: 40px;
  margin-right: 0.75rem; /* If logo and text name are side-by-side */
}
#footer-13 .footer-tagline-f13 {
  font-size: 0.9rem;
  color: #6c757d; /* Bootstrap's muted text color */
  margin-top: 0.25rem;
  margin-bottom: 1.5rem;
}
#footer-13 .footer-block-title-f13 {
  font-size: 0.95rem;
  font-weight: 500;
  color: #343a40; /* Darker grey for titles */
  margin-bottom: 0.75rem;
  margin-top: 1.5rem; /* Space between blocks */
}
#footer-13 .footer-block-title-f13:first-of-type {
  /* No top margin for the very first title */
  margin-top: 0;
}
#footer-13 .footer-link-list-f13 {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0; /* Reset default ul margin */
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start; /* Align left by default */
  gap: 0.5rem 1.25rem; /* row-gap column-gap */
}
#footer-13 .footer-link-list-f13 a {
  color: #007bff; /* Standard Bootstrap primary color */
  text-decoration: none;
}
#footer-13 .footer-link-list-f13 a:hover {
  color: #0056b3; /* Darker primary color on hover */
  text-decoration: underline;
}
#footer-13 .footer-copyright-f13 {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #e9ecef; /* Lighter border for copyright separation */
  text-align: center;
  font-size: 0.8rem;
  color: #6c757d;
}
#footer-13 .footer-copyright-f13 p {
  margin-bottom: 0;
}
/* Responsive: Stack elements and center text on smaller screens */
@media (max-width: 767.98px) {
  #footer-13 {
    text-align: center;
  }
  #footer-13 .footer-link-list-f13 {
    justify-content: center;
  }
  #footer-13 .footer-brand-info {
    margin-bottom: 1.5rem;
  }
}