/* AIBM Marketing Site - Navigation Dropdown Styles */
/* Dropdown menu styles for comprehensive site navigation */

/* Navigation Dropdown Container */
.nav-dropdown {
  position: relative;
  padding: 0.5rem 0; /* Add padding to increase hover area */
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--gray-700);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  cursor: pointer;
  padding: 0.5rem 0.75rem; /* Add padding for larger click/hover area */
  margin: -0.5rem -0.75rem; /* Negative margin to maintain visual position */
}

.nav-dropdown-toggle:hover,
.nav-dropdown-toggle.active {
  color: var(--primary);
}

.nav-dropdown-icon {
  font-size: 0.7rem;
  transition: transform var(--transition-fast);
}

.nav-dropdown.open .nav-dropdown-icon {
  transform: rotate(180deg);
}

/* Dropdown Content */
.nav-dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 0; /* Remove gap - use padding-top instead */
  padding-top: 0.5rem; /* Visual spacing at top of dropdown */
  background: var(--white);
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  border-radius: var(--radius-md);
  padding-bottom: var(--space-sm);
  z-index: 1001;
  opacity: 0;
  animation: fadeSlideDown 0.2s ease-out forwards;
}

/* Bridge the gap between toggle and dropdown with pseudo-element */
.nav-dropdown-content::before {
  content: '';
  position: absolute;
  top: -10px; /* Bridge the gap above the dropdown */
  left: 0;
  right: 0;
  height: 15px; /* Invisible hover bridge */
  background: transparent;
}

.nav-dropdown:hover .nav-dropdown-content {
  display: block;
}

/* Dropdown Items */
.nav-dropdown-item {
  display: block;
  padding: 0.625rem 1.25rem; /* Generous padding for easy clicking */
  color: var(--gray-700);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.nav-dropdown-item:hover {
  background-color: var(--gray-100);
  color: var(--primary);
  text-decoration: none;
}

.nav-dropdown-item.active {
  color: var(--primary);
  font-weight: var(--font-weight-semibold);
  background-color: var(--primary-light);
  background-color: rgba(99, 102, 241, 0.1);
}

/* Dropdown Divider */
.nav-dropdown-divider {
  height: 1px;
  background-color: var(--gray-300);
  margin: var(--space-sm) 0;
}

/* Dropdown Header (for sections like "Overview") */
.nav-dropdown-header {
  padding: var(--space-xs) var(--space-lg);
  color: var(--gray-500);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Animation */
@keyframes fadeSlideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* CTA Button in Nav */
.navbar-cta .btn {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-base);
}

/* Mobile Navigation (Below 768px) */
@media (max-width: 768px) {
  .nav-dropdown {
    width: 100%;
  }

  .nav-dropdown-toggle {
    width: 100%;
    justify-content: space-between;
    padding: var(--space-md) 0;
  }

  .nav-dropdown-content {
    position: static;
    transform: none;
    margin-top: 0;
    box-shadow: none;
    border-radius: 0;
    background: var(--gray-50);
    min-width: 100%;
    padding: 0;
    display: none;
    opacity: 1;
    animation: none;
  }

  .nav-dropdown.open .nav-dropdown-content {
    display: block;
  }

  .nav-dropdown:hover .nav-dropdown-content {
    display: none; /* Disable hover on mobile */
  }

  .nav-dropdown.open:hover .nav-dropdown-content {
    display: block; /* But allow open state to override */
  }

  .nav-dropdown-item {
    padding: var(--space-sm) var(--space-xl);
    font-size: var(--font-size-sm);
  }

  .nav-dropdown-item:hover {
    padding-left: var(--space-xl);
  }

  .nav-dropdown-header {
    padding: var(--space-xs) var(--space-xl);
  }

  /* Accordion behavior for mobile */
  .navbar-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }

  .navbar-menu.open {
    transform: translateX(0);
  }

  .navbar-menu > li {
    border-bottom: 1px solid var(--gray-300);
  }

  .navbar-menu > li:last-child {
    border-bottom: none;
  }

  .navbar-link {
    display: block;
    padding: var(--space-md) var(--space-lg);
  }

  .navbar-cta {
    margin: var(--space-lg);
    margin-top: 0;
  }

  .navbar-cta .btn {
    width: 100%;
    text-align: center;
  }
}

/* Tablet adjustments (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .navbar-menu {
    gap: var(--space-md);
  }

  .nav-dropdown-content {
    min-width: 200px;
  }

  .navbar-cta {
    margin-left: var(--space-md);
  }
}

/* Desktop hover enhancement */
@media (min-width: 1025px) {
  .nav-dropdown-content {
    min-width: 260px;
  }
}

/* Focus states for accessibility */
.nav-dropdown-toggle:focus,
.nav-dropdown-item:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Keyboard navigation support */
.nav-dropdown-toggle:focus-visible,
.nav-dropdown-item:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .nav-dropdown-content {
    border: 2px solid var(--gray-900);
  }

  .nav-dropdown-item:hover,
  .nav-dropdown-item.active {
    border-left: 4px solid var(--primary);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .nav-dropdown-content {
    animation: none;
    transition: none;
  }

  .nav-dropdown-icon {
    transition: none;
  }

  .navbar-menu {
    transition: none;
  }
}