/* Header #13 */
#header-13 {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  background-color: #fff;
  z-index: 1000;
}
#header-13 .navbar-brand img {
  max-height: 45px;
}
/* Đảm bảo container flex và items căn giữa */
#header-13 .container.d-flex {
  align-items: center;
}
/* Chừa khoảng giữa logo và collapse */
#header-13 .navbar-toggler {
  margin-left: auto;
}
/* Search input */
#header-13 .form-control {
  width: 240px;
  transition: width 0.3s;
}
#header-13 .form-control:focus {
  width: 300px;
}
@media (max-width: 767.98px) {
  #header-13 .form-control {
    width: 140px;
  }
  #header-13 .form-control:focus {
    width: 180px;
  }
}
#header-13 .btn-contact {
  text-transform: uppercase;
  padding: 0.5rem 1rem;
}
#header-13 .nav-link {
  color: #333;
}
#header-13 .nav-link.active {
  color: #0d6efd;
  font-weight: 500;
}



#link-section-9 {
  position: relative;
  background: var(--bottom-color);
  color: var(--text-color);
  text-align: center;
  overflow: hidden;
  padding: 6rem 0;
}

/* Lớp nền trên */
#link-section-9 .upper-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--top-color);
  z-index: 0;
}

/* Sóng chia giữa */
#link-section-9 .upper-bg .wave-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  overflow: hidden;
}
#link-section-9 .upper-bg .wave-bottom svg {
  display: block;
  width: calc(100% + 1px);
  height: 80px;
}
#link-section-9 .upper-bg .wave-bottom path {
  fill: var(--bottom-color);
}

/* Nội dung giữ nổi trên lớp nền */
#link-section-9 .container {
  position: relative;
  z-index: 1;
}

#link-section-9 .section-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

#link-section-9 .section-subtitle {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Các nút liên kết */
#link-section-9 .link-item {
  background: rgba(255,255,255,0.2);
  border-radius: 0.75rem;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, transform 0.3s;
}
#link-section-9 .link-item:hover {
  background: rgba(255,255,255,0.35);
  transform: translateY(-4px);
}
#link-section-9 .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;
  }
}