/* File: styles/modal-navigation.css */
/**
 * CSS styles for router-enabled navigation elements
 * Handles active states, transitions, and accessibility
 */

/* Router-enabled navigation elements */
[data-router-link] {
  transition: all 0.2s ease;
  position: relative;
}

/* Active state for router links */
.router-active {
  /* Subtle highlight for active navigation */
  background: var(--surface-selected) !important;
  color: var(--text-primary) !important;
}

/* Top-bar specific router link styles */
.top-bar .logo.router-active {
  /* Active logo styling */
  background: var(--surface-subtle);
  border-radius: 4px;
}

.top-bar .corpus-icon.router-active {
  /* Active corpus icon styling */
  background: var(--surface-selected);
  border-radius: 4px;
  color: var(--interactive-primary);
}

.top-bar .corpus-icon.router-active i {
  color: var(--interactive-primary);
}

/* Focus states for accessibility */
[data-router-link]:focus {
  outline: 2px solid var(--interactive-primary);
  outline-offset: 2px;
}

/* Hover states */
[data-router-link]:hover {
  background: var(--surface-hover);
  transition: background-color 0.15s ease;
}

/* Disabled state for router links */
[data-router-link][aria-disabled="true"] {
  opacity: var(--opacity-disabled);
  pointer-events: none;
}

/* Active indicator for precise navigation feedback */
.router-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--interactive-primary);
  border-radius: 0 2px 2px 0;
}

/* Remove indicator for certain elements */
.top-bar .logo.router-active::before,
.top-bar .icon.router-active::before {
  display: none;
}

/* Breadcrumb navigation styles */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 14px;
  color: var(--text-secondary);
  margin: var(--spacing-4) 0;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.breadcrumb-link {
  color: var(--interactive-primary);
  text-decoration: none;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: 4px;
  transition: background-color 0.15s ease;
}

.breadcrumb-link:hover {
  background: var(--surface-hover);
  text-decoration: underline;
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--spacing-1) var(--spacing-2);
}

.breadcrumb-separator {
  color: var(--text-tertiary);
  font-size: 12px;
}

/* Router navigation menu styles */
.router-nav {
  padding: var(--spacing-4);
}

.router-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.router-nav .nav-item {
  margin-bottom: var(--spacing-1);
}

.router-nav .nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.15s ease;
  position: relative;
}

.router-nav .nav-link:hover {
  background: var(--surface-hover);
}

.router-nav .nav-link.router-active {
  background: var(--surface-selected);
  color: var(--interactive-primary);
  font-weight: 500;
}

.router-nav .nav-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.router-nav .nav-badge {
  background: var(--status-error);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
  margin-left: auto;
}

.router-nav .nav-badge-primary { background: var(--interactive-primary); }
.router-nav .nav-badge-warning { background: var(--status-warning); }
.router-nav .nav-badge-success { background: var(--status-success); }

/* Nested navigation levels */
.router-nav .nav-level-1 {
  margin-left: var(--spacing-4);
  margin-top: var(--spacing-2);
}

.router-nav .nav-level-1 .nav-link {
  font-size: 14px;
  padding: var(--spacing-2) var(--spacing-3);
}

/* Animation for route transitions */
@keyframes routeTransition {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.route-transition {
  animation: routeTransition 0.2s ease-out;
}

/* Error states for invalid routes */
.router-error {
  background: var(--status-error-subtle);
  border: 1px solid var(--status-error);
  color: var(--status-error-text);
  padding: var(--spacing-3);
  border-radius: 6px;
  margin: var(--spacing-4) 0;
}

.router-error-title {
  font-weight: 600;
  margin-bottom: var(--spacing-2);
}

.router-error-message {
  font-size: 14px;
  margin-bottom: var(--spacing-2);
}

.router-error-details {
  font-size: 12px;
  color: var(--text-secondary);
  font-family: var(--font-family-mono);
  background: var(--surface-subtle);
  padding: var(--spacing-2);
  border-radius: 4px;
  white-space: pre-wrap;
}

/* Loading states during route validation */
.router-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-8);
  color: var(--text-secondary);
}

.router-loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-subtle);
  border-top: 2px solid var(--interactive-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive considerations */
@media (max-width: 768px) {
  .breadcrumbs {
    font-size: 12px;
  }
  
  .router-nav {
    padding: var(--spacing-2);
  }
  
  .router-nav .nav-link {
    padding: var(--spacing-2);
  }
  
  /* Hide text on small screens, keep icons */
  .router-nav .nav-link .nav-text {
    display: none;
  }
  
  .router-nav .nav-icon {
    margin-right: 0;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .router-active {
    border: 2px solid var(--interactive-primary) !important;
  }
  
  .router-active::before {
    width: 4px;
    background: var(--interactive-primary);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  [data-router-link],
  .breadcrumb-link,
  .router-nav .nav-link {
    transition: none;
  }
  
  .routeTransition,
  .router-loading-spinner {
    animation: none;
  }
}