/**
 * Navigation Authentication Styles
 * Styles for login/logout links and user menu in navigation
 */

/* User Menu Styles */
.user-menu {
  position: relative;
}

.user-menu-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-colors);
  min-height: var(--touch-target-min);
  max-width: 200px;
}

.user-menu-button:hover {
  color: var(--color-primary);
  background: var(--color-primary-100);
}

.user-menu-button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.user-avatar {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  flex-shrink: 0;
  color: var(--color-text-primary);
  border: 2px solid var(--color-primary-300);
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.user-name {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--font-size-sm);
  line-height: 1.2;
}

.dropdown-arrow {
  transition: var(--transition-transform);
  flex-shrink: 0;
}

.user-menu-button[aria-expanded="true"] .dropdown-arrow {
  transform: rotate(180deg);
}

/* User Dropdown */
.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--glass-backdrop-filter);
  z-index: var(--z-index-dropdown);
  display: none;
  margin-top: var(--spacing-xs);
  overflow: hidden;
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-colors);
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
}

.dropdown-item:hover {
  background: var(--color-primary-100);
  color: var(--color-primary);
}

.dropdown-item:focus {
  outline: none;
  background: var(--color-primary-100);
  color: var(--color-primary);
}

.dropdown-item:not(:last-child) {
  border-bottom: 1px solid var(--color-border-light);
}

/* Login Link */
.login-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-colors);
  min-height: var(--touch-target-min);
  background: var(--gradient-primary);
  border: 1px solid var(--color-primary-300);
}

.login-link:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.login-link:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Navigation Messages */
.nav-message {
  position: fixed;
  top: calc(var(--header-height) + var(--spacing-sm));
  right: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  z-index: var(--z-index-toast);
  max-width: 300px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--glass-backdrop-filter);
  animation: slideInRight 0.3s ease-out;
}

.nav-message-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
}

.nav-message-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.nav-message-info {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #3b82f6;
}

.message-icon {
  font-size: var(--font-size-base);
  flex-shrink: 0;
}

.message-text {
  flex: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .user-menu-button {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .user-name {
    display: none;
  }

  .user-dropdown {
    right: auto;
    left: 0;
    min-width: 180px;
  }

  .login-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
  }

  .nav-message {
    right: var(--spacing-sm);
    left: var(--spacing-sm);
    max-width: none;
  }
}

@media (max-width: 480px) {
  .user-dropdown {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    min-width: auto;
    border-radius: 0;
    border-left: none;
    border-right: none;
    margin-top: 0;
  }

  .dropdown-item {
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
  }

  .nav-message {
    top: calc(var(--header-height) + var(--spacing-xs));
    right: var(--spacing-xs);
    left: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .user-menu-button,
  .login-link {
    border: 2px solid var(--color-primary);
  }

  .user-dropdown {
    border-width: 2px;
  }

  .dropdown-item:hover,
  .dropdown-item:focus {
    border: 2px solid var(--color-primary);
    margin: -1px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .dropdown-arrow {
    transition: none;
  }

  .user-menu-button:hover,
  .login-link:hover {
    transform: none;
  }

  .nav-message {
    animation: none;
  }
}

/* Focus Visible Support */
.user-menu-button:focus-visible,
.login-link:focus-visible,
.dropdown-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Animations */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Dark Mode Adjustments */
@media (prefers-color-scheme: dark) {
  .user-avatar {
    background: var(--color-primary-300);
  }

  .nav-message-success {
    background: rgba(34, 197, 94, 0.15);
  }

  .nav-message-error {
    background: rgba(239, 68, 68, 0.15);
  }

  .nav-message-info {
    background: rgba(59, 130, 246, 0.15);
  }
}

/* Authentication State Elements */
[data-auth-required] {
  transition: var(--transition-opacity);
}

[data-auth-required][aria-hidden="true"] {
  opacity: 0.5;
  pointer-events: none;
}

[data-unauth-only][aria-hidden="true"] {
  opacity: 0.5;
  pointer-events: none;
}

[data-role-required][aria-hidden="true"] {
  opacity: 0.5;
  pointer-events: none;
}

/* Protected Route Indicators */
.nav-links a[data-auth-required]:not([aria-hidden="true"])::after {
  content: "🔒";
  font-size: 10px;
  margin-left: 4px;
  opacity: 0.6;
}

.nav-links a[data-role-required="admin"]:not([aria-hidden="true"])::after {
  content: "👑";
  font-size: 10px;
  margin-left: 4px;
  opacity: 0.8;
}

/* Loading States for Authentication */
.auth-loading {
  position: relative;
  pointer-events: none;
}

.auth-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid transparent;
  border-top: 2px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Enhanced User Menu Accessibility */
.user-menu-button[aria-expanded="true"] {
  background: var(--color-primary-100);
  color: var(--color-primary);
}

.user-dropdown[aria-hidden="false"] {
  animation: dropdownFadeIn 0.2s ease-out;
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Screen Reader Only Content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Print Styles */
@media print {
  .user-menu,
  .auth-link,
  .nav-message {
    display: none;
  }
}

/* Loading States */
.user-menu-button:disabled,
.login-link:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.dropdown-item[data-loading="true"] {
  opacity: 0.6;
  pointer-events: none;
}

.dropdown-item[data-loading="true"]::after {
  content: "...";
  margin-left: var(--spacing-xs);
}

/* Accessibility Enhancements */
.user-dropdown[aria-hidden="true"] {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.user-dropdown[aria-hidden="false"] {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

/* Live Region for Screen Readers */
.live-region {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Tooltip for User Avatar */
.user-avatar[title] {
  cursor: help;
}

/* Status Indicators */
.user-status-indicator {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--color-surface);
}

.user-status-online {
  background: #22c55e;
}

.user-status-away {
  background: #f59e0b;
}

.user-status-offline {
  background: #6b7280;
}

/* Role Badges */
.user-role-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: var(--border-radius-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  margin-top: 2px;
  line-height: 1;
}

.user-role-admin {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.user-role-user {
  background: var(--color-secondary-200);
  color: var(--color-secondary-800);
}

/* Notification Badges */
.notification-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  background: #ef4444;
  color: white;
  border-radius: 50%;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-surface);
}

.notification-badge:empty {
  display: none;
}