:root {
  --bc-nav-surface: rgba(255, 255, 255, 0.95);
  --bc-nav-surface-strong: #ffffff;
  --bc-nav-border: #d8e1ee;
  --bc-nav-text: #0f172a;
  --bc-nav-muted: #64748b;
  --bc-nav-accent: #eef4ff;
  --bc-nav-shadow: 0 18px 44px rgba(2, 8, 23, 0.16);
  --bc-nav-ring: rgba(59, 130, 246, 0.28);
  --bc-nav-radius: 14px;
}

[data-bs-theme='dark'] {
  --bc-nav-surface: rgba(12, 18, 34, 0.95);
  --bc-nav-surface-strong: #101b31;
  --bc-nav-border: #2a3650;
  --bc-nav-text: #e2e8f0;
  --bc-nav-muted: #9aa7bc;
  --bc-nav-accent: #162544;
  --bc-nav-shadow: 0 24px 50px rgba(2, 6, 18, 0.55);
  --bc-nav-ring: rgba(96, 165, 250, 0.35);
}

.expo-top-nav {
  position: relative;
  isolation: isolate;
  z-index: 2200;
  overflow: visible !important;
  border-bottom: 1px solid rgba(148, 163, 184, 0.22);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(245, 249, 255, 0.9));
  backdrop-filter: blur(10px);
}

[data-bs-theme='dark'] .expo-top-nav {
  border-bottom-color: rgba(148, 163, 184, 0.3);
  background: linear-gradient(180deg, rgba(12, 18, 34, 0.98), rgba(12, 18, 34, 0.9));
}

.expo-top-nav .navbar-nav {
  gap: 0.22rem;
}

.header {
  position: relative;
  z-index: 2200;
  overflow: visible !important;
}

.expo-top-nav .container,
.expo-top-nav .navbar-collapse,
.expo-top-nav .navbar-nav,
.expo-top-nav .nav-item,
.expo-top-nav .bc-dropdown {
  overflow: visible !important;
}

.expo-top-nav .navbar-toggler {
  border-color: var(--bc-nav-border);
}

[data-bs-theme='dark'] .expo-top-nav .navbar-toggler-icon {
  filter: invert(1) brightness(1.6);
}

.expo-nav-link,
.expo-nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--bc-nav-text);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1;
  padding: 0.52rem 0.9rem;
  transition: all 0.16s ease;
  text-decoration: none;
}

.expo-nav-link:hover,
.expo-nav-trigger:hover,
.expo-nav-link:focus-visible,
.expo-nav-trigger:focus-visible,
.expo-icon-trigger:hover,
.expo-icon-trigger:focus-visible {
  border-color: var(--bc-nav-border);
  background-color: var(--bc-nav-accent);
  color: var(--bc-nav-text);
  box-shadow: 0 0 0 4px var(--bc-nav-ring);
  outline: none;
}

.expo-nav-trigger {
  border: 1px solid transparent;
  background: transparent;
}

.expo-nav-trigger .expo-chevron {
  font-size: 0.72rem;
  color: var(--bc-nav-muted);
  transition: transform 0.18s ease;
}

.bc-dropdown > .expo-nav-trigger[aria-expanded='true'] .expo-chevron,
.bc-dropdown > .expo-icon-trigger[aria-expanded='true'] .expo-chevron {
  transform: rotate(180deg);
}

.expo-icon-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  border: 1px solid var(--bc-nav-border);
  background: var(--bc-nav-surface-strong);
  color: var(--bc-nav-text);
  transition: all 0.16s ease;
}

.bc-dropdown {
  position: relative;
  display: inline-flex;
}

.bc-dropdown [data-popover] {
  --popover-x: 0;
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 13rem;
  z-index: 2600;
  opacity: 1;
  transform: translate(var(--popover-x), 0) scale(1);
  transform-origin: top center;
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
}

.bc-dropdown [data-popover][data-align='end'] {
  left: auto;
  right: 0;
}

.bc-dropdown [data-popover][data-align='center'] {
  --popover-x: -50%;
  left: 50%;
}

.bc-dropdown [data-popover][data-side='top'] {
  top: auto;
  bottom: calc(100% + 0.5rem);
  transform-origin: bottom center;
}

.bc-dropdown [data-popover][aria-hidden='true'] {
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
}

.bc-dropdown [data-popover][aria-hidden='true']:not([data-side='top']) {
  transform: translate(var(--popover-x), -6px) scale(0.98);
}

.bc-dropdown [data-popover][aria-hidden='true'][data-side='top'] {
  transform: translate(var(--popover-x), 6px) scale(0.98);
}

.expo-top-dropdown-panel {
  border: 1px solid var(--bc-nav-border);
  border-radius: var(--bc-nav-radius);
  background: linear-gradient(160deg, var(--bc-nav-surface-strong), var(--bc-nav-surface));
  box-shadow: var(--bc-nav-shadow);
  padding: 0.4rem;
}

.dropdown-menu.expo-top-dropdown-panel {
  border: 1px solid var(--bc-nav-border);
  border-radius: var(--bc-nav-radius);
  background: linear-gradient(160deg, var(--bc-nav-surface-strong), var(--bc-nav-surface));
  box-shadow: var(--bc-nav-shadow);
  padding: 0.4rem;
  z-index: 2600;
}

.expo-top-dropdown-panel .dropdown-divider,
.expo-top-dropdown-panel .border-top,
.expo-top-dropdown-panel .border-bottom {
  border-color: var(--bc-nav-border) !important;
}

.expo-top-dropdown-panel .text-muted {
  color: var(--bc-nav-muted) !important;
}

.expo-top-dropdown-panel .list-group-item {
  border-color: var(--bc-nav-border);
  background: transparent;
  color: var(--bc-nav-text);
}

.expo-top-dropdown-panel .list-group-item.bg-light {
  background: transparent !important;
}

.expo-top-dropdown-menu {
  display: grid;
  gap: 0.16rem;
}

.expo-top-dropdown-item,
.expo-top-dropdown-panel .dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: 100%;
  border: 0;
  border-radius: 10px;
  color: var(--bc-nav-text);
  background: transparent;
  font-size: 0.9rem;
  line-height: 1.25;
  padding: 0.52rem 0.62rem;
  text-align: left;
  text-decoration: none;
  transition: background-color 0.14s ease, color 0.14s ease;
}

.expo-top-dropdown-item:hover,
.expo-top-dropdown-item:focus-visible,
.expo-top-dropdown-item.active,
.expo-top-dropdown-panel .dropdown-item:hover,
.expo-top-dropdown-panel .dropdown-item:focus-visible,
.expo-top-dropdown-panel .dropdown-item.active {
  background: var(--bc-nav-accent);
  color: var(--bc-nav-text);
  outline: none;
}

.expo-top-dropdown-item i,
.expo-top-dropdown-panel .dropdown-item i {
  color: var(--bc-nav-muted);
}

.expo-mega-dropdown {
  width: min(720px, 92vw);
  min-width: min(720px, 92vw);
  max-width: 92vw;
}

.expo-mega-menu {
  display: grid;
  gap: 0.4rem;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
}

.expo-mega-item {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  column-gap: 0.75rem;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--bc-nav-text);
  padding: 0.62rem;
  min-height: 5.65rem;
  text-decoration: none;
  transition: all 0.15s ease;
}

.expo-mega-item:hover,
.expo-mega-item:focus-visible,
.expo-mega-item.active {
  border-color: var(--bc-nav-border);
  background: var(--bc-nav-accent);
  outline: none;
}

.expo-mega-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.12);
  color: #2563eb;
}

.expo-mega-label {
  display: block;
  color: var(--bc-nav-text);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.expo-mega-note {
  display: block;
  color: var(--bc-nav-muted);
  font-size: 0.78rem;
  line-height: 1.35;
  margin-top: 0.16rem;
}

.expo-auth-cta {
  padding-inline: 1.02rem;
  border-radius: 999px;
}

.expo-notification-panel {
  min-width: 20rem;
  max-width: min(24rem, 88vw);
}

@media (max-width: 991.98px) {
  .expo-top-nav .navbar-nav {
    gap: 0.45rem;
    padding-top: 0.65rem;
  }

  .header .expo-top-nav .ms-auto {
    align-items: center;
  }

  .header .expo-top-nav .nav-top-wrap {
    padding-top: 0;
    align-items: center;
  }

  .bc-dropdown {
    width: 100%;
  }

  .header .expo-top-nav .ms-auto > .bc-dropdown {
    width: auto;
    flex: 0 0 auto;
  }

  .expo-nav-trigger {
    width: 100%;
    justify-content: space-between;
  }

  .bc-dropdown [data-popover] {
    width: 100%;
    min-width: 100%;
    max-width: 100%;
  }

  .expo-mega-dropdown {
    width: 100%;
    min-width: 100%;
    max-width: 100%;
  }

  .expo-mega-menu {
    grid-template-columns: 1fr;
  }
}