/* Vibe Learning navigation — authoritative replacement
   This intentionally uses NEW class names so legacy .menu-toggle/.site-nav
   rules cannot interfere with the navigation.
*/

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid #dde5ef;
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  gap: 18px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: #14243a;
  font-size: 1.08rem;
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover { text-decoration: none; }
.brand img { width: 38px; height: 38px; object-fit: contain; }

/* DESKTOP DEFAULT */
.main-navigation {
  display: flex !important;
  visibility: visible !important;
  opacity: 1 !important;
  align-items: center;
  gap: 3px;
  width: auto;
  position: static;
}

.main-navigation a {
  display: block;
  padding: 8px 10px;
  border-radius: 9px;
  color: #47566b;
  font-size: .91rem;
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
  white-space: nowrap;
}

.main-navigation a:hover,
.main-navigation a.active {
  background: #eef2ff;
  color: #4148c9;
  text-decoration: none;
}

/* The hamburger does not exist visually on desktop. */
.mobile-nav-toggle,
button.mobile-nav-toggle,
#mobileNavToggle {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* MOBILE ONLY */
@media screen and (max-width: 840px) {
  .header-inner { min-height: 62px; }

  .mobile-nav-toggle,
  button.mobile-nav-toggle,
  #mobileNavToggle {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    width: 42px !important;
    height: 42px !important;
    min-width: 42px !important;
    min-height: 42px !important;
    max-width: 42px !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 1px solid #d8e1ec !important;
    border-radius: 10px !important;
    background: #fff !important;
    box-shadow: none !important;
    align-items: center !important;
    justify-content: center !important;
    flex-direction: column !important;
    gap: 4px !important;
    cursor: pointer;
  }

  .mobile-nav-toggle span {
    display: block;
    width: 19px;
    height: 2px;
    margin: 0;
    border-radius: 2px;
    background: #26384e;
    transition: transform .18s ease, opacity .18s ease;
  }

  .mobile-nav-toggle.is-open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .mobile-nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .mobile-nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .main-navigation {
    display: none !important;
    position: absolute !important;
    top: 62px !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    padding: 8px !important;
    background: #fff !important;
    border: 1px solid #dde5ef !important;
    border-top: 0 !important;
    border-radius: 0 0 14px 14px !important;
    box-shadow: 0 18px 38px rgba(20,36,58,.14) !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 2px !important;
  }

  .main-navigation.mobile-open {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
  }

  .main-navigation a {
    width: 100%;
    padding: 11px 12px;
    font-size: .95rem;
  }
}

/* Hard desktop recovery. This wins even if old mobile JS/classes remain. */
@media screen and (min-width: 841px) {
  .main-navigation,
  .main-navigation.mobile-open,
  #mainNavigation {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: static !important;
    width: auto !important;
  }

  .mobile-nav-toggle,
  button.mobile-nav-toggle,
  #mobileNavToggle {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
  }
}