/**
 * Unified Navigation Bar Component
 * Professional, fixed navbar with glassmorphism on scroll
 * Replaces the large header + bottom menu pattern
 */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--theme-bg-elevated);
  border-bottom: 1px solid var(--theme-border-subtle);
  z-index: var(--z-navbar);
  transition: all var(--transition-base);
}

/* Glassmorphism state when scrolled */
.navbar--scrolled {
  background: var(--theme-glass-bg);
  backdrop-filter: blur(var(--theme-glass-blur));
  -webkit-backdrop-filter: blur(var(--theme-glass-blur));
  border-bottom-color: var(--theme-glass-border);
  box-shadow: var(--theme-shadow-md);
}

.navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Logo Section */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--theme-text-primary);
  font-weight: var(--font-bold);
  font-size: var(--text-xl);
  transition: opacity var(--transition-fast);
}

.navbar__logo:hover {
  opacity: 0.8;
}

.navbar__logo-image {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.navbar__logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--theme-text-primary);
}

/* Navigation Links */
.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  justify-content: center;
}

.navbar__link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  color: var(--theme-text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  position: relative;
}

.navbar__link:hover {
  color: var(--theme-text-primary);
  background: var(--theme-bg-tertiary);
}

.navbar__link--active {
  color: var(--theme-accent-primary);
  background: rgba(6, 182, 212, 0.1);
}

.navbar__link--active:hover {
  background: rgba(6, 182, 212, 0.15);
}

.navbar__link-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Actions Section (Right side) */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* CTA Button */
.navbar__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--gradient-brand);
  color: white;
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
}

.navbar__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
}

/* Theme Toggle */
.navbar__theme-toggle {
  display: flex;
  align-items: center;
  padding: var(--space-2);
  background: transparent;
  border: 1px solid var(--theme-border-subtle);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--theme-text-secondary);
}

.navbar__theme-toggle:hover {
  background: var(--theme-bg-tertiary);
  border-color: var(--theme-border-medium);
  color: var(--theme-text-primary);
}

.navbar__theme-icon {
  width: 20px;
  height: 20px;
}

/* User Area */
.navbar__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar__user-button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid var(--theme-border-subtle);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--theme-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

.navbar__user-button:hover {
  background: var(--theme-bg-tertiary);
  border-color: var(--theme-border-medium);
  color: var(--theme-text-primary);
}

.navbar__user-avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

/* Notifications */
.navbar__notifications {
  position: relative;
}

.navbar__notifications-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--theme-border-subtle);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--theme-text-secondary);
}

.navbar__notifications-button:hover {
  background: var(--theme-bg-tertiary);
  border-color: var(--theme-border-medium);
  color: var(--theme-text-primary);
}

.navbar__notifications-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background: var(--color-error);
  color: white;
  font-size: 10px;
  font-weight: var(--font-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--theme-bg-primary);
}

/* Mobile Menu Toggle */
.navbar__mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--theme-border-subtle);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--theme-text-secondary);
}

.navbar__mobile-toggle:hover {
  background: var(--theme-bg-tertiary);
  border-color: var(--theme-border-medium);
}

.navbar__mobile-toggle-icon {
  width: 24px;
  height: 24px;
}

/* Mobile Menu */
.navbar__mobile-menu {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--theme-bg-elevated);
  padding: var(--space-6);
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  z-index: calc(var(--z-navbar) - 1);
}

.navbar__mobile-menu--open {
  transform: translateX(0);
}

.navbar__mobile-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.navbar__mobile-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  color: var(--theme-text-secondary);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
}

.navbar__mobile-link:hover {
  color: var(--theme-text-primary);
  background: var(--theme-bg-tertiary);
}

.navbar__mobile-link--active {
  color: var(--theme-accent-primary);
  background: rgba(6, 182, 212, 0.1);
}

.navbar__mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--theme-border-subtle);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .navbar__nav {
    display: none;
  }
  
  .navbar__mobile-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .navbar__container {
    padding: 0 var(--space-4);
  }
  
  .navbar__cta {
    display: none;
  }
  
  .navbar__logo-text {
    display: none;
  }
}

/* Accessibility - Keyboard Navigation */
.navbar__link:focus-visible,
.navbar__cta:focus-visible,
.navbar__theme-toggle:focus-visible,
.navbar__user-button:focus-visible,
.navbar__notifications-button:focus-visible,
.navbar__mobile-toggle:focus-visible {
  outline: 2px solid var(--theme-accent-primary);
  outline-offset: 2px;
}

/* Skip to main content link for accessibility */
.navbar__skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--theme-accent-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: calc(var(--z-navbar) + 1);
}

.navbar__skip-link:focus {
  top: var(--space-2);
}