#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-9 Styles */
#footer-9 {
  background-color: var(--footer-bg-color, #f9f9f9);
  color: var(--footer-text-color, #5a5a5a);
  padding: 1.25rem 0;
  font-size: 0.85rem;
  border-top: 1px solid var(--footer-border-top-color, #e1e1e1);
}
#footer-9 .footer-content-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem; /* Gap between items when they wrap */
}
#footer-9 .footer-block {
  margin-bottom: 0; /* No bottom margin for direct children of flex */
}
#footer-9 .copyright-block a {
  color: var(--footer-link-color, #3498db);
  text-decoration: none;
  font-weight: 500;
}
#footer-9 .copyright-block a:hover {
  color: var(--footer-link-hover-color, #2374a9);
  text-decoration: underline;
}
#footer-9 .quick-links-block ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem; /* row-gap column-gap */
}
#footer-9 .quick-links-block ul li a {
  color: var(--footer-link-color, #3498db);
  text-decoration: none;
}
#footer-9 .quick-links-block ul li a:hover {
  color: var(--footer-link-hover-color, #2374a9);
  text-decoration: underline;
}
#footer-9 .contact-short-block .contact-prefix {
  margin-right: 0.3rem;
  opacity: 0.8;
}
#footer-9 .contact-short-block a {
  color: var(--footer-link-color, #3498db);
  text-decoration: none;
}
#footer-9 .contact-short-block a:hover {
  color: var(--footer-link-hover-color, #2374a9);
  text-decoration: underline;
}
#footer-9 .social-minimal-block a {
  color: var(--footer-icon-color, #777777);
  margin-left: 0.75rem; /* Space between icons */
  font-size: 1.1rem; /* Slightly larger icons */
  transition: color 0.2s ease;
}
#footer-9 .social-minimal-block a:first-child {
  margin-left: 0;
}
#footer-9 .social-minimal-block a:hover {
  color: var(--footer-icon-hover-color, #3498db);
}
/* Responsive adjustments */
@media (max-width: 991.98px) {
  /* Stack items below lg */
  #footer-9 .footer-content-wrapper {
    flex-direction: column;
    text-align: center;
  }
  #footer-9 .footer-block {
    margin-bottom: 0.75rem; /* Add margin when stacked */
  }
  #footer-9 .footer-block:last-child {
    margin-bottom: 0;
  }
  #footer-9 .quick-links-block ul {
    justify-content: center;
  }
  #footer-9 .social-minimal-block a {
    margin: 0 0.5rem; /* Adjust spacing for centered icons */
  }
}