/* Topbar (slim contact strip) */
.topbar {
  background: var(--color-ink);
  padding: 5px 0;
}
.topbar-tagline {
  color: rgba(255, 255, 255, .75);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
}
.topbar-contact { display: flex; gap: 20px; }
.topbar-contact a {
  color: rgba(255, 255, 255, .8);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  font-weight: 500;
  text-decoration: none;
}
.topbar-contact a:hover { color: var(--color-primary); text-decoration: none; }
.topbar-contact i { font-size: .72rem; color: var(--color-primary); }

/* Navbar */
.site-navbar {
  background: #fff;
  padding: 0;
  box-shadow: 0 1px 0 var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1030;
}
.site-navbar .navbar-brand img { height: 40px; }
.site-navbar .container { padding-top: 16px; padding-bottom: 16px; }

.site-navbar .navbar-nav { gap: 28px; }

.site-navbar .nav-link {
  position: relative;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .95rem;
  padding: 6px 2px;
  border-radius: 0;
  transition: color .15s ease;
}
.site-navbar .nav-link:not(.dropdown-toggle)::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: -2px;
  height: 2px;
  background: var(--color-primary-deep);
  transition: right .18s ease;
}
.site-navbar .nav-link:hover,
.site-navbar .nav-link.active {
  background: transparent;
  color: var(--color-ink);
}
.site-navbar .nav-link:not(.dropdown-toggle):hover::after,
.site-navbar .nav-link:not(.dropdown-toggle).active::after {
  right: 0;
}
.site-navbar .dropdown-toggle::after {
  vertical-align: 2px;
  border-top-color: currentColor;
}

.site-navbar .dropdown-menu {
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius);
  margin-top: 8px;
}
.site-navbar .dropdown-item {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .9rem;
  padding: 8px 16px;
}
.site-navbar .dropdown-item:hover,
.site-navbar .dropdown-item:focus {
  background: var(--color-primary-light);
  color: var(--color-ink);
}

.navbar-cta-group { display: flex; align-items: center; gap: 18px; margin-left: 24px; }

.navbar-cta {
  background: var(--color-primary);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .88rem;
  padding: 9px 22px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(36, 29, 15, .18);
}
.navbar-cta:hover { background: var(--color-primary-deep); color: var(--color-ink); }

.site-navbar .navbar-toggler {
  border-color: var(--color-border);
  box-shadow: none;
}

@media (max-width: 991.98px) {
  .site-navbar .navbar-nav { gap: 4px; }
  .site-navbar .nav-link::after { display: none; }
  .site-navbar .nav-link:hover,
  .site-navbar .nav-link.active { background: var(--color-primary-light); border-radius: var(--radius); }
  .navbar-cta-group { margin: 14px 0 0; flex-direction: column; align-items: flex-start; gap: 12px; }
}

.noscript-nav {
  background: var(--color-primary-dark);
  color: #fff;
  text-align: center;
  font-size: .85rem;
  padding: 8px;
}
.noscript-nav a { color: #fff; text-decoration: underline; margin: 0 8px; }

/* Footer */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, .85);
  padding: 48px 0 20px;
  margin-top: 64px;
}
.site-footer h3, .site-footer h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 16px;
}
.site-footer p { color: rgba(255, 255, 255, .75); }
.site-footer a { color: rgba(255, 255, 255, .85); }
.site-footer a:hover { color: var(--color-accent); }
.site-footer .footer-logo { height: 56px; margin-bottom: 12px; background: #fff; padding: 8px 12px; border-radius: var(--radius); }

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: .92rem;
}
.footer-contact-item i { color: var(--color-accent); margin-top: 3px; width: 16px; }

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  margin-right: 8px;
}
.footer-social a:hover { background: var(--color-accent); color: var(--color-ink); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .15);
  margin-top: 32px;
  padding-top: 16px;
  font-size: .85rem;
  color: rgba(255, 255, 255, .6);
}

/* Zalo floating contact button */
.zalo-float {
  position: fixed;
  right: 20px;
  bottom: 76px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0068FF;
  border-radius: 50%;
  box-shadow: 0 4px 14px rgba(0, 104, 255, .45);
  z-index: 999;
  animation: zaloPulse 2.4s ease-in-out infinite;
  transition: transform .15s ease;
}
.zalo-float:hover { transform: scale(1.08); }
@keyframes zaloPulse {
  0%, 100% { box-shadow: 0 4px 14px rgba(0, 104, 255, .45); }
  50% { box-shadow: 0 4px 14px rgba(0, 104, 255, .45), 0 0 0 8px rgba(0, 104, 255, .15); }
}
@media (max-width: 575.98px) {
  .zalo-float { width: 44px; height: 44px; bottom: 70px; right: 16px; }
}

/* Back to top */
#scroll-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-ink);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .2s ease;
  z-index: 999;
}
#scroll-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
#scroll-to-top:hover { background: var(--color-primary-deep); color: var(--color-ink); }
@media (max-width: 575.98px) {
  #scroll-to-top { width: 40px; height: 40px; right: 16px; bottom: 16px; }
}

/* Breadcrumb */
.breadcrumb {
  background: transparent;
  padding: 16px 0;
  font-size: .9rem;
  margin-bottom: 0;
}
.breadcrumb-item a {
  color: var(--color-primary-deep);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.breadcrumb-item a:hover {
  color: var(--color-ink);
}
.breadcrumb-item.active {
  color: var(--color-text-muted);
  font-weight: 600;
  text-decoration: none;
}