/* ==========================================================================
   INTELLIBRIDGE AI - NAVIGATION & MEGA MENU STYLES
   ========================================================================== */

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  height: 100%;
}

.nav-item {
  position: relative; /* Anchor mega menu directly beneath each corresponding nav-item */
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-link {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-primary, #0F172A);
  padding-inline: 0.75rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
}

.nav-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link,
.nav-link.active {
  color: var(--color-primary, #0066CC);
  border-bottom-color: var(--color-primary, #0066CC);
}

.nav-item:hover .nav-link svg {
  transform: rotate(180deg);
}

/* Mega Menu Panels (Positioned directly beneath corresponding nav item) */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: auto;
  width: 560px;
  max-width: calc(100vw - 2rem);
  background-color: var(--color-white, #FFFFFF);
  border: 1px solid var(--color-border, #E2E8F0);
  border-radius: var(--radius-lg, 8px);
  box-shadow: 0 15px 30px -5px rgba(15, 23, 42, 0.12);
  padding: 1.75rem 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  transform: translateY(6px);
  pointer-events: none;
  z-index: 1010;
}

/* Right-align mega menus for items towards the right end of the navigation bar to prevent screen overflow */
.nav-item:nth-child(n+5) .mega-menu {
  left: auto;
  right: 0;
}

.nav-item:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.25rem;
}

.mega-menu-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted, #64748B);
  margin-bottom: 0.85rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border, #E2E8F0);
}

.mega-menu-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mega-menu-item {
  display: block;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-md, 6px);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.mega-menu-item:hover {
  background-color: var(--color-background-soft, #F8FAFC);
}

.mega-menu-item-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-primary, #0F172A);
}

.mega-menu-item:hover .mega-menu-item-name {
  color: var(--color-primary, #0066CC);
}

.mega-menu-item-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #334155);
  margin-top: 0.15rem;
  line-height: 1.35;
}

/* Mobile Drawer Menu */
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(11, 25, 44, 0.5);
  backdrop-filter: blur(2px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 380px;
  height: 100vh;
  background-color: var(--color-white, #FFFFFF);
  box-shadow: var(--shadow-xl);
  z-index: 2000;
  transition: right var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.mobile-drawer.active {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  border-bottom: 1px solid var(--color-border, #E2E8F0);
}

.mobile-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
}

.mobile-nav-group {
  margin-bottom: 0.5rem;
}

.mobile-nav-title {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-secondary, #0B192C);
  background: none;
  border: none;
  border-bottom: 1px solid var(--color-border, #E2E8F0);
  cursor: pointer;
}

.mobile-nav-subitems {
  display: none;
  padding: 0.5rem 0 0.5rem 1rem;
  flex-direction: column;
  gap: 0.65rem;
}

.mobile-nav-group.open .mobile-nav-subitems {
  display: flex;
}

.mobile-nav-group.open .mobile-nav-title svg {
  transform: rotate(180deg);
}

.mobile-nav-subitem {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary, #334155);
  text-decoration: none;
}

.mobile-nav-subitem:hover {
  color: var(--color-primary, #0066CC);
}

/* CRITICAL DISPLAY FIX: Hide Mobile Drawer on Desktop (min-width: 1025px) */
@media (min-width: 1025px) {
  .mobile-drawer-overlay,
  .mobile-drawer,
  .hamburger-btn {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
  }
}