/**
 * Navigation Component
 * Structure only - colors applied in colors.css
 */

/* Navbar */
.navbar,
nav {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  width: 100%;
  border-bottom-width: 1px;
  border-bottom-style: solid;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  /* Background and border colors applied in colors.css */
}

.navbar-container {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo */
.navbar-logo,
.logo {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  /* Color applied in colors.css */
}

.navbar-logo img,
.logo img {
  height: 2.5rem;
  width: auto;
  min-width: 100px;
  object-fit: contain;
}

/* Navigation menu */
.navbar-menu,
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link,
.navbar-link {
  text-decoration: none;
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  /* Color applied in colors.css */
}

.nav-link:hover,
.navbar-link:hover,
.nav-link.active,
.navbar-link.active {
  /* Hover colors applied in colors.css */
}

/* Navigation actions (right side buttons) */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile menu toggle */
.navbar-toggle,
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-2);
  background: transparent;
  border: none;
  cursor: pointer;
}

.navbar-toggle span,
.menu-toggle span {
  width: 24px;
  height: 2px;
  transition: all var(--transition-fast);
  /* Background color applied in colors.css */
}

/* Mobile menu toggle animation */
.navbar-toggle.active span:nth-child(1),
.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
}

.navbar-toggle.active span:nth-child(2),
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3),
.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
}

/* Dropdown menu */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--space-2);
  min-width: 200px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  /* Background color applied in colors.css */
}

.dropdown.open .dropdown-menu,
.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  /* Colors applied in colors.css */
}

.dropdown-item:hover {
  /* Hover colors applied in colors.css */
}

.dropdown-divider {
  height: 1px;
  margin: var(--space-2) 0;
  /* Background color applied in colors.css */
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  padding: var(--space-3) 0;
  margin: 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.breadcrumb-item::after {
  content: '/';
  opacity: 0.5;
}

.breadcrumb-item:last-child::after {
  content: '';
}

.breadcrumb-item a {
  text-decoration: none;
  /* Color applied in colors.css */
}

.breadcrumb-item.active {
  font-weight: var(--font-medium);
  /* Color applied in colors.css */
}

/* Mobile menu overlay backdrop */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: calc(var(--z-sticky) + 1);
}

body.nav-open .nav-overlay {
  opacity: 1;
  visibility: visible;
}

/* Responsive */
@media (max-width: 768px) {
  /* Hide overlay on mobile - not needed for dropdown */
  .nav-overlay {
    display: none;
  }

  .navbar-toggle,
  .menu-toggle {
    display: flex;
  }

  .navbar-menu,
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    max-height: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 0;
    background: var(--color-surface);
    box-shadow: var(--shadow-xl);
    transition: max-height var(--transition-base), padding var(--transition-base);
    overflow: hidden;
    z-index: var(--z-dropdown);
  }

  .navbar-menu.open,
  .nav-menu.open {
    max-height: calc(100vh - var(--navbar-height, 70px));
    padding: 0.5rem 0;
    overflow-y: auto;
  }

  /* Nav menu items */
  .nav-menu > li {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .nav-link,
  .navbar-link {
    display: block;
    width: 100%;
    padding: 0.875rem 1.5rem;
    border-radius: 0;
    text-align: left;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s ease;
  }

  .nav-link:hover,
  .navbar-link:hover,
  .nav-link.active,
  .navbar-link.active {
    background: rgba(var(--color-primary-rgb), 0.1);
  }

  /* Navbar actions - centered row layout */
  .navbar-actions,
  li.navbar-actions {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.25rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(var(--color-border-rgb), 0.3);
    background: rgba(var(--color-primary-rgb), 0.05);
    width: 100%;
    list-style: none;
  }

  .navbar-actions .btn {
    width: auto;
    min-height: 44px;
    padding: 0.625rem 1.25rem;
    font-weight: 600;
  }

  .navbar-actions .theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(var(--color-surface-rgb), 0.5);
    border: 1px solid rgba(var(--color-border-rgb), 0.3);
    cursor: pointer;
    transition: background 0.2s ease;
  }

  .navbar-actions .theme-toggle:hover {
    background: rgba(var(--color-primary-rgb), 0.15);
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    margin-top: var(--space-2);
    margin-left: var(--space-4);
  }

  /* Note: 3D theme mobile navbar is handled in themes/threed.css */
}