/* Header #15 */
/* Announcement bar */
#header-15 .announcement {
  background: #0d6efd;
  color: #fff;
  text-align: center;
  font-size: 0.875rem;
  padding: 0.25rem 0;
}
#header-15 .announcement a {
  color: #fff;
  text-decoration: underline;
}
/* Header chính */
#header-15 {
  position: fixed;
  top: 0;
  width: 100%;
  transition: background 0.3s, box-shadow 0.3s;
  z-index: 999;
}
#header-15 .navbar {
  padding: 1rem 0;
}

#header-15 .navbar-brand img {
  max-height: 45px;
}

#header-15.transparent {
  background: transparent;
  box-shadow: none;
}
#header-15.solid {
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}
/* Nav link underline hover */
#header-15 .nav-link {
  position: relative;
  color: #333;
  transition: color 0.2s;
}
#header-15 .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: #0d6efd;
  transition: width 0.3s;
}
#header-15 .nav-link:hover::after,
#header-15 .nav-link.active::after {
  width: 100%;
}
/* CTA button */
#header-15 .btn-cta {
  text-transform: uppercase;
  padding: 0.5rem 1.25rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
#header-15 .btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}
/* Đệm cho nội dung trang khi header cố định */
body {
  padding-top: calc((1rem * 2) + 2.5rem);
}



#link-section-2 {
  position: relative;
  padding: 6rem 0;
  color: var(--text-color);
  overflow: hidden;
  text-align: center;
}
#link-section-2::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--secondary-color);
  transform: rotate(-6deg);
}
#link-section-2 .container {
  position: relative;
  z-index: 1;
}
#link-section-2 .section-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}
#link-section-2 .section-subtitle {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.85;
}
#link-section-2 .link-item {
  background: var(--primary-color);
  border: 2px solid var(--text-color);
  color: var(--text-color);
  border-radius: .5rem;
  padding: 1.25rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .3s, color .3s, transform .3s;
}
#link-section-2 .link-item:hover {
  background: var(--text-color);
  color: var(--primary-color);
  transform: translateY(-4px);
}
#link-section-2 .link-item i {
  margin-right: .5rem;
}





/* Footer-15 Styles - Creative Separator */
#footer-15 {
  background-color: #1a1a2e; /* Dark blue/purple base */
  color: #e0e0e0; /* Light grey text */
  padding-top: 4rem; /* Padding for the top section */
  position: relative; /* For pseudo-elements if used for separator */
  font-size: 0.9rem;
}
#footer-15 .footer-upper-content-f15 {
  padding-bottom: 4rem; /* Space before the separator visual */
  position: relative;
  z-index: 2; /* Ensure content is above any background pseudo-elements */
}
#footer-15 .footer-logo-f15 {
  max-height: 50px;
  margin-bottom: 1rem;
  /* filter: brightness(0) invert(1) opacity(0.9);*/ /* Light logo on dark bg */
}
#footer-15 .site-name-text-f15 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  margin-bottom: 0.5rem;
  display: block;
}
#footer-15 .site-name-text-f15:hover {
  color: #c7ecee; /* Lighter teal for hover */
}
#footer-15 .creative-statement-f15 {
  font-size: 1rem;
  line-height: 1.6;
  font-style: italic;
  color: #b3b3cc; /* Lighter shade for statement */
  margin-bottom: 0;
}
#footer-15 .section-title-f15 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff; /* White titles */
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
#footer-15 .nav-menu-list-f15 {
  list-style: none;
  padding-left: 0;
}
#footer-15 .nav-menu-list-f15 li {
  margin-bottom: 0.7rem;
}
#footer-15 .nav-menu-list-f15 a {
  color: #9a9aff; /* Light purple/blue links */
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
#footer-15 .nav-menu-list-f15 a:hover,
#footer-15 .nav-menu-list-f15 a.active {
  color: #ffffff;
  padding-left: 8px;
  text-decoration: none;
}
/* Creative Separator - Example using ::after on upper content */
#footer-15 .footer-upper-content-f15::after {
  content: "";
  position: absolute;
  bottom: -2px; /* Adjust to sit on the edge or slightly overlap */
  left: 0;
  width: 100%;
  height: 60px; /* Height of the wave/angle */
  /* Example: Angled separator using linear gradient */
  background: linear-gradient(to right bottom, transparent 49.5%, #0f0f1a 50%),
    linear-gradient(to left bottom, transparent 49.5%, #0f0f1a 50%);
  background-repeat: no-repeat;
  background-position: left bottom, right bottom;
  background-size: 50.1% 100%, 50.1% 100%; /* 50.1% to avoid thin line at center */
  /* Example: SVG Wave - more complex, requires an SVG */
  /* background-image: url('data:image/svg+xml,...'); replace with actual SVG */
  /* background-size: cover; */
  /* background-repeat: no-repeat; */
  /* background-position: bottom center; */
  z-index: 1;
}
#footer-15 .footer-lower-content-f15 {
  background-color: #0f0f1a; /* Darker section below separator */
  color: #a0a0c0; /* Text color for lower section */
  padding: 3rem 0 2rem 0;
  position: relative;
  z-index: 2; /* Ensure content is above any background pseudo-elements */
}
#footer-15 .lower-content-title-f15 {
  font-size: 0.95rem;
  font-weight: 500;
  color: #d0d0e0; /* Lighter titles for lower section */
  margin-bottom: 0.75rem;
}
#footer-15 .contact-essentials-f15 p,
#footer-15 .contact-essentials-f15 a {
  margin-bottom: 0.3rem;
  color: #a0a0c0;
  text-decoration: none;
  font-size: 0.9rem;
}
#footer-15 .contact-essentials-f15 i {
  margin-right: 0.5rem;
  color: #9a9aff; /* Link color for icons */
}
#footer-15 .contact-essentials-f15 a:hover {
  color: #c7ecee;
}
#footer-15 .partner-links-list-f15 {
  list-style: none;
  padding-left: 0;
  margin-bottom: 1.5rem; /* Space before copyright */
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start; /* Or center if preferred */
  gap: 0.5rem 1rem;
}
#footer-15 .partner-links-list-f15 a {
  color: #9a9aff;
  text-decoration: none;
  font-size: 0.85rem;
}
#footer-15 .partner-links-list-f15 a:hover {
  color: #ffffff;
  text-decoration: underline;
}
#footer-15 .copyright-text-f15 {
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.7;
  padding-top: 1.5rem;
  border-top: 1px solid #30304a; /* Subtle border for copyright */
}
#footer-15 .copyright-text-f15 p {
  margin-bottom: 0;
}
@media (max-width: 991.98px) {
  #footer-15 .footer-upper-content-f15 .text-lg-start {
    text-align: center !important;
  }
  #footer-15 .footer-upper-content-f15::after {
    /* Simplify or remove complex separator on mobile */
    /* background: none;
        height: 2px;
        background-color: #0f0f1a;
        bottom: 0; */
    /* The angled one still looks ok on mobile */
  }
}
@media (max-width: 767.98px) {
  #footer-15 .footer-column-f15 {
    margin-bottom: 2.5rem;
  }
  #footer-15 .partner-links-list-f15,
  #footer-15 .contact-essentials-f15 {
    text-align: center;
    justify-content: center;
  }
}