/**
 * Modern Navigation Styles — MyNamCycling
 * Clean, modern navigation with glassmorphism, dropdowns, and mobile-first design
 */

/* === Header & Navigation Container === */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky, 1020);
  background: var(--surface-0);
  border-bottom: 1px solid var(--surface-100);
  transition: all 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-soft);
  border-bottom-color: rgba(226, 232, 240, 0.6);
}

.nav-container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-6);
}

/* === Logo === */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.site-logo:hover {
  transform: scale(1.02);
}

.site-logo img {
  height: 40px;
  width: auto;
  max-width: 180px;
}

/* === Desktop Navigation Links === */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}

.nav-links li {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--ink-700);
  font-weight: 500;
  font-size: var(--text-base);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--brand-600);
  background: var(--brand-50);
  text-decoration: none;
}

.nav-link.active {
  color: var(--brand-600);
  background: var(--brand-50);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--brand-600);
  border-radius: 2px;
}

.nav-link i {
  font-size: var(--text-lg);
}

/* === Navigation Actions (Right Side) === */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Icon Buttons (Search, Notifications) */
.nav-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--ink-700);
  font-size: var(--text-xl);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.nav-icon-btn:hover {
  background: var(--surface-100);
  color: var(--brand-600);
}

.nav-icon-btn:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 2px;
}

/* Notification Badge */
.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--color-error);
  color: white;
  font-size: 11px;
  font-weight: 600;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--surface-0);
}

/* === Auth Buttons (Guest) === */
.nav-auth-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.nav-btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.nav-btn--primary {
  background: var(--brand-600);
  color: white !important;
  box-shadow: 0 2px 8px rgba(0, 122, 94, 0.25);
}

.nav-btn--primary:hover {
  background: var(--brand-500);
  box-shadow: 0 4px 12px rgba(0, 122, 94, 0.35);
}

.nav-btn--secondary {
  background: transparent;
  color: var(--ink-700) !important;
  border: 1px solid var(--surface-300);
}

.nav-btn--secondary:hover {
  background: var(--surface-100);
  border-color: var(--surface-300);
  color: var(--brand-600) !important;
}

/* === User Dropdown === */
.user-dropdown {
  position: relative;
}

.user-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-1);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s ease;
}

.user-dropdown-toggle:hover {
  background: var(--surface-100);
  border-color: var(--surface-200);
}

.user-dropdown-toggle[aria-expanded="true"] {
  background: var(--surface-100);
  border-color: var(--surface-300);
}

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

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--surface-0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-avatar-fallback {
  color: white;
  font-size: var(--text-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.avatar-initials {
  font-size: 14px;
  font-weight: 600;
  color: white;
}

.user-name {
  font-weight: 500;
  color: var(--ink-900);
  font-size: var(--text-base);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-dropdown-chevron {
  font-size: var(--text-sm);
  color: var(--ink-500);
  transition: transform 0.2s ease;
}

/* Dropdown Menu */
.user-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 280px;
  background: var(--surface-0);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--surface-200);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: var(--z-dropdown, 1000);
  overflow: hidden;
}

.user-dropdown.open .user-dropdown-menu,
.user-dropdown-toggle[aria-expanded="true"] + .user-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Dropdown Header */
.user-dropdown-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: linear-gradient(135deg, var(--brand-50), var(--surface-0));
  border-bottom: 1px solid var(--surface-100);
}

.user-avatar--large {
  width: 56px;
  height: 56px;
  font-size: var(--text-2xl);
}

.user-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.user-fullname {
  font-weight: 600;
  color: var(--ink-900);
  font-size: var(--text-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-email {
  font-size: var(--text-sm);
  color: var(--ink-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Dropdown Items */
.user-dropdown-divider {
  height: 1px;
  background: var(--surface-200);
  margin: var(--space-2) 0;
}

.user-dropdown-items {
  list-style: none;
  padding: var(--space-2);
  margin: 0;
}

.user-dropdown-items li {
  margin: 0;
}

.user-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--ink-700);
  font-size: var(--text-base);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  cursor: pointer;
  width: 100%;
  border: none;
  background: transparent;
  text-align: left;
}

.user-dropdown-item:hover {
  background: var(--surface-100);
  color: var(--brand-600);
  text-decoration: none;
}

.user-dropdown-item i {
  font-size: var(--text-lg);
  color: var(--ink-500);
  width: 20px;
  text-align: center;
}

.user-dropdown-item:hover i {
  color: var(--brand-600);
}

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

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

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

.user-dropdown-logout {
  padding: 0 var(--space-2) var(--space-2);
}

/* Admin Badge */
.badge-admin {
  margin-left: auto;
  background: var(--accent-500);
  color: var(--ink-900);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* === Mobile Navigation === */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  padding: 0;
}

.nav-toggle:hover {
  background: var(--surface-100);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 2px;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink-700);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: var(--z-modal, 1050);
  display: flex;
  justify-content: flex-end;
}

.mobile-nav-overlay.active {
  background: rgba(0, 0, 0, 0.5);
  visibility: visible;
}

.mobile-nav-content {
  width: 85%;
  max-width: 360px;
  height: 100%;
  background: var(--surface-0);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
}

.mobile-nav-overlay.active .mobile-nav-content {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5);
  border-bottom: 1px solid var(--surface-200);
}

.mobile-nav-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--ink-900);
}

.mobile-nav-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--ink-700);
  font-size: var(--text-xl);
  cursor: pointer;
  transition: all 0.2s ease;
}

.mobile-nav-close:hover {
  background: var(--surface-100);
  color: var(--color-error);
}

.mobile-nav-links {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  color: var(--ink-700);
  font-size: var(--text-lg);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--brand-50);
  color: var(--brand-600);
  text-decoration: none;
}

.mobile-nav-link i {
  font-size: var(--text-xl);
  color: var(--ink-500);
  width: 24px;
  text-align: center;
}

.mobile-nav-link:hover i,
.mobile-nav-link.active i {
  color: var(--brand-600);
}

.mobile-nav-link--primary {
  background: var(--brand-600) !important;
  color: white !important;
  margin-top: var(--space-2);
}

.mobile-nav-link--primary:hover {
  background: var(--brand-500) !important;
}

.mobile-nav-link--primary i {
  color: white;
}

.mobile-nav-link--danger {
  color: var(--color-error);
}

.mobile-nav-link--danger:hover {
  background: var(--color-error-light);
}

.mobile-nav-link--danger i {
  color: var(--color-error);
}

.mobile-nav-divider {
  height: 1px;
  background: var(--surface-200);
  margin: var(--space-3) 0;
}

/* === Responsive Breakpoints === */
@media (max-width: 991px) {
  .nav-links {
    gap: var(--space-1);
  }
  
  .nav-link {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
  }
  
  .nav-link span {
    display: none;
  }
  
  .user-name {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-nav {
    height: 64px;
  }
  
  .nav-links,
  .nav-auth-actions {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-actions {
    gap: var(--space-2);
  }
  
  .user-dropdown-toggle {
    padding: var(--space-1);
  }
  
  /* Adjust dropdown for mobile */
  .user-dropdown-menu {
    position: fixed;
    top: 72px;
    left: var(--space-4);
    right: var(--space-4);
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .site-logo img {
    height: 32px;
  }
  
  .nav-container {
    padding: 0 var(--space-3);
  }
  
  .nav-icon-btn {
    width: 36px;
    height: 36px;
    font-size: var(--text-lg);
  }
  
  .user-avatar {
    width: 32px;
    height: 32px;
  }
}

/* === Accessibility === */
@media (prefers-reduced-motion: reduce) {
  .site-header,
  .nav-link,
  .nav-btn,
  .user-dropdown-toggle,
  .user-dropdown-menu,
  .mobile-nav-overlay,
  .mobile-nav-content,
  .nav-toggle-bar {
    transition: none;
  }
}

/* Focus visible styles for keyboard navigation */
.nav-link:focus-visible,
.mobile-nav-link:focus-visible {
  outline: 2px solid var(--brand-600);
  outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .nav-link.active::after {
    height: 3px;
  }
  
  .user-dropdown-menu {
    border-width: 2px;
  }
}