/**
 * Navigation Component Styles
 * Header navigation, mobile menu, user dropdowns
 */

/* ==========================================================================
   Header Navigation
   ========================================================================== */

.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-bg-overlay);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  transition: background-color var(--transition-base);
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: var(--space-lg);
}

/* Brand Logo */
.brand-logo {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.brand-link:hover {
  color: var(--color-accent);
}

.brand-text {
  font-family: var(--font-family-primary);
}

/* Desktop Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 var(--space-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-text-primary);
  background-color: var(--color-surface-hover);
}

.nav-link.active {
  color: var(--color-accent);
  background-color: var(--color-surface);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

/* Header Controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Authentication Controls */
.auth-controls {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* User Account Dropdown */
.user-account {
  position: relative;
  display: none;
  align-items: center;
}

.user-account-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.user-account-btn:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.user-account.active .user-account-btn {
  background-color: var(--color-surface-active);
  border-color: var(--color-accent);
}

.user-avatar-small {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

.user-name {
  font-weight: 500;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chevron-down {
  transition: transform var(--transition-fast);
}

.user-account.active .chevron-down {
  transform: rotate(180deg);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + var(--space-xs));
  right: 0;
  min-width: 280px;
  background: #000000; /* Solid black background */
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.user-account.active .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-dropdown-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.user-avatar-medium {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.user-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.user-display-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-email {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-username {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-dropdown-menu {
  padding: var(--space-xs) 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  text-align: left;
  font-size: var(--font-size-sm);
  color: #00ff88; /* Green text for better readability */
  cursor: pointer;
  transition: background-color var(--transition-fast);
  text-decoration: none;
}

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

.dropdown-item.danger {
  color: var(--color-error);
}

.dropdown-item.danger:hover {
  background-color: var(--color-error-bg);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--color-border);
  margin: var(--space-xs) 0;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background-color: var(--color-surface-hover);
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background-color: var(--color-text-primary);
  margin: 2px 0;
  transition: all var(--transition-fast);
  border-radius: 1px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

/* Hide focusable elements when menu is closed to improve accessibility */
.mobile-nav[aria-hidden="true"] a,
.mobile-nav[aria-hidden="true"] button {
  pointer-events: none;
}

.mobile-nav[aria-hidden="false"] a,
.mobile-nav[aria-hidden="false"] button,
.mobile-nav.active a,
.mobile-nav.active button {
  pointer-events: auto;
}

.mobile-nav[aria-hidden="false"],
.mobile-nav.active {
  max-height: 400px;
}

.mobile-nav-content {
  padding: var(--space-lg);
}

.mobile-nav-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--color-text-primary);
  background-color: var(--color-surface);
}

.mobile-nav-auth {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* Mobile User Profile */
.mobile-user-profile {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
}

.mobile-user-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-md);
  margin-bottom: var(--space-md);
}

.mobile-user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.mobile-user-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.mobile-user-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-user-email {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-user-username {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-user-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.mobile-user-action {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  text-align: left;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  text-decoration: none;
  border-radius: var(--radius-md);
}

.mobile-user-action:hover {
  background-color: var(--color-surface-hover);
}

.mobile-user-action.danger {
  color: var(--color-error);
}

.mobile-user-action.danger:hover {
  background-color: var(--color-error-bg);
}

/* Responsive Breakpoints */
@media (max-width: 1023px) {
  .nav-menu,
  .auth-controls {
    display: none;
  }
  
  .user-account {
    display: none !important;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .user-dropdown {
    min-width: 260px;
    max-width: calc(100vw - 32px);
  }
  
  .user-name {
    max-width: 80px;
  }
}