/* ============================================
   NAVIGATION SYSTEM - Professional Sidebar Navigation
   Inspired by Bloomberg Terminal, GitHub, VS Code
   ============================================ */

/* ============================================
   CSS VARIABLES FOR NAVIGATION
   ============================================ */
:root {
  --nav-item-height: 36px;
  --nav-item-radius: 6px;
  --nav-icon-size: 18px;
  --nav-font-size: 13px;
  --nav-group-gap: 4px;
  --nav-indent: 32px;
  --nav-transition-fast: 0.15s ease;
  --nav-transition-normal: 0.2s ease;
  --nav-transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   SIDEBAR NAVIGATION CONTAINER
   ============================================ */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 12px 0;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--pro-border-color) transparent;
}

/* Allow flyouts to overflow when sidebar is collapsed */
.sidebar.collapsed .sidebar-nav {
  overflow: visible;
}

.sidebar-nav::-webkit-scrollbar {
  width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--pro-border-color);
  border-radius: 3px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: var(--pro-border-emphasis);
}

/* ============================================
   NAVIGATION SECTIONS
   ============================================ */
.nav-section {
  margin-bottom: 8px;
}

.nav-section-title {
  display: flex;
  align-items: center;
  padding: 8px 16px 6px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--pro-text-muted);
  user-select: none;
}

.sidebar.collapsed .nav-section-title {
  opacity: 0;
  height: 0;
  padding: 0;
  margin: 0;
  overflow: hidden;
}

/* ============================================
   NAVIGATION GROUP (Expandable)
   ============================================ */
.nav-group {
  position: relative;
  margin: 0 8px var(--nav-group-gap);
}

/* Group Header - Clickable */
.nav-group-header {
  display: flex;
  align-items: center;
  height: var(--nav-item-height);
  padding: 0 12px;
  border-radius: var(--nav-item-radius);
  color: var(--pro-text-secondary);
  cursor: pointer;
  user-select: none;
  transition: 
    background var(--nav-transition-fast),
    color var(--nav-transition-fast);
}

.nav-group-header:hover {
  background: var(--pro-bg-tertiary);
  color: var(--pro-text-primary);
}

.nav-group-header:active {
  background: var(--pro-bg-elevated);
}

/* Focus styles for keyboard navigation */
.nav-group-header:focus-visible {
  outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset-inset);
  box-shadow: var(--focus-ring-shadow-inset);
}

/* Header Content Layout */
.nav-group-header-content {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

/* Group Icon */
.nav-group-header .nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  opacity: 0.7;
  transition: opacity var(--nav-transition-fast);
}

.nav-group-header:hover .nav-icon {
  opacity: 1;
}

/* Group Text */
.nav-group-header .nav-text {
  flex: 1;
  font-size: var(--nav-font-size);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--nav-transition-slow);
}

/* Expand/Collapse Chevron */
.nav-group-chevron {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  opacity: 0.4;
  transition: 
    transform var(--nav-transition-normal),
    opacity var(--nav-transition-fast);
  flex-shrink: 0;
}

.nav-group-header:hover .nav-group-chevron {
  opacity: 0.7;
}

.nav-group.expanded .nav-group-chevron {
  transform: rotate(90deg);
  opacity: 0.7;
}

/* ============================================
   GROUP ITEMS CONTAINER (Collapsible)
   ============================================ */
.nav-group-items {
  display: flex;
  flex-direction: column;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  transition: 
    max-height var(--nav-transition-slow),
    opacity var(--nav-transition-normal),
    margin var(--nav-transition-normal);
}

.nav-group.expanded .nav-group-items {
  max-height: 500px;
  opacity: 1;
  margin-top: 2px;
  margin-bottom: 4px;
}

/* Child Nav Items */
.nav-group-items .nav-item {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-group-items .nav-link {
  display: flex;
  align-items: center;
  height: 32px;
  padding: 0 12px 0 20px;
  margin: 1px 8px;
  border-radius: var(--nav-item-radius);
  color: var(--pro-text-muted);
  text-decoration: none;
  font-size: var(--nav-font-size);
  position: relative;
  transition: 
    background var(--nav-transition-fast),
    color var(--nav-transition-fast),
    border-color var(--nav-transition-fast);
  border-left: 2px solid transparent;
}

.nav-group-items .nav-link:hover {
  background: var(--pro-bg-tertiary);
  color: var(--pro-text-primary);
  border-left-color: var(--pro-border-emphasis);
}

.nav-group-items .nav-link:focus-visible {
  outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset-inset);
  box-shadow: var(--focus-ring-shadow-inset);
}

/* Child Item Icon */
.nav-group-items .nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0.6;
  margin-right: 8px;
  flex-shrink: 0;
  transition: opacity var(--nav-transition-fast);
}

.nav-group-items .nav-link:hover .nav-icon {
  opacity: 0.9;
}

/* Child Item Text */
.nav-group-items .nav-text {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============================================
   ACTIVE STATES
   ============================================ */

/* Active child item */
.nav-group-items .nav-link.active {
  background: var(--user-accent-muted, var(--pro-accent-primary-muted));
  color: var(--user-accent, var(--pro-accent-primary));
  font-weight: 500;
  border-left-color: var(--user-accent, var(--pro-accent-primary));
}

.nav-group-items .nav-link.active .nav-icon {
  opacity: 1;
}

/* Parent group with active child */
.nav-group.has-active > .nav-group-header {
  color: var(--user-accent, var(--pro-accent-primary));
}

.nav-group.has-active > .nav-group-header .nav-icon {
  opacity: 1;
}

.nav-group.has-active > .nav-group-header .nav-group-chevron {
  opacity: 0.8;
}

/* Expanded group header with active child */
.nav-group.has-active.expanded > .nav-group-header {
  background: var(--user-accent-muted, var(--pro-accent-primary-muted));
}

/* ============================================
   STANDALONE NAV ITEMS (No submenu)
   ============================================ */
.nav-standalone {
  position: relative;
  margin: 0 8px var(--nav-group-gap);
  list-style: none;
}

.nav-standalone .nav-link {
  display: flex;
  align-items: center;
  height: var(--nav-item-height);
  padding: 0 12px;
  border-radius: var(--nav-item-radius);
  color: var(--pro-text-secondary);
  text-decoration: none;
  transition: 
    background var(--nav-transition-fast),
    color var(--nav-transition-fast);
}

.nav-standalone .nav-link:hover {
  background: var(--pro-bg-tertiary);
  color: var(--pro-text-primary);
}

.nav-standalone .nav-link:active {
  background: var(--pro-bg-elevated);
}

.nav-standalone .nav-link:focus-visible {
  outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset-inset);
  box-shadow: var(--focus-ring-shadow-inset);
}

.nav-standalone .nav-link.active {
  background: var(--user-accent-muted, var(--pro-accent-primary-muted));
  color: var(--user-accent, var(--pro-accent-primary));
  font-weight: 500;
}

.nav-standalone .nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  opacity: 0.7;
  margin-right: 10px;
  flex-shrink: 0;
  transition: opacity var(--nav-transition-fast);
}

.nav-standalone .nav-link:hover .nav-icon,
.nav-standalone .nav-link.active .nav-icon {
  opacity: 1;
}

.nav-standalone .nav-text {
  flex: 1;
  font-size: var(--nav-font-size);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--nav-transition-slow);
}

/* ============================================
   NAVIGATION DIVIDER
   ============================================ */
.nav-divider {
  height: 1px;
  margin: 8px 16px;
  background: var(--pro-border-muted);
}

/* ============================================
   COLLAPSED SIDEBAR - Navigation Styles
   ============================================ */
.sidebar.collapsed .nav-group-header .nav-text,
.sidebar.collapsed .nav-group-header .nav-group-chevron,
.sidebar.collapsed .nav-standalone .nav-text {
  display: none;
}

.sidebar.collapsed .nav-group-header-content {
  flex: none;
  gap: 0;
}

.sidebar.collapsed .nav-group-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  height: 40px;
  width: 40px;
  margin: 0 auto;
  border-radius: 8px;
}

.sidebar.collapsed .nav-standalone .nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  height: 40px;
  width: 40px;
  margin: 0 auto;
  border-radius: 8px;
}

.sidebar.collapsed .nav-group {
  margin: 0 0 var(--nav-group-gap);
  position: relative;
}

.sidebar.collapsed .nav-standalone {
  margin: 0 0 var(--nav-group-gap);
  position: relative;
}

.sidebar.collapsed .nav-group-header .nav-icon,
.sidebar.collapsed .nav-standalone .nav-icon {
  margin: 0;
}

/* Active state for collapsed sidebar - show accent ring around icon */
.sidebar.collapsed .nav-group.has-active > .nav-group-header {
  background: var(--user-accent-muted, var(--pro-accent-primary-muted));
  border-radius: 8px;
  box-shadow: inset 0 0 0 2px var(--user-accent, var(--pro-accent-primary));
}

.sidebar.collapsed .nav-group.has-active > .nav-group-header .nav-icon {
  color: var(--user-accent, var(--pro-accent-primary));
}

.sidebar.collapsed .nav-standalone .nav-link.active {
  background: var(--user-accent-muted, var(--pro-accent-primary-muted));
  border-radius: 8px;
  box-shadow: inset 0 0 0 2px var(--user-accent, var(--pro-accent-primary));
}

.sidebar.collapsed .nav-standalone .nav-link.active .nav-icon {
  color: var(--user-accent, var(--pro-accent-primary));
}

.sidebar.collapsed .nav-group-items {
  max-height: 0 !important;
  opacity: 0;
  margin: 0;
  padding: 0;
}

/* ============================================
   FLYOUT MENU (Collapsed Sidebar Hover)
   ============================================ */

/* Hide flyout when sidebar is expanded */
.sidebar:not(.collapsed) .nav-flyout {
  display: none;
}

.nav-flyout {
  position: absolute;
  left: var(--sidebar-width-collapsed, 56px);
  top: 0;
  min-width: 180px;
  max-width: 240px;
  background: var(--pro-bg-elevated);
  border: 1px solid var(--pro-border-color);
  border-radius: 8px;
  box-shadow: var(--pro-shadow-lg);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-4px) scale(0.98);
  transform-origin: left center;
  transition: 
    opacity var(--nav-transition-fast),
    visibility var(--nav-transition-fast),
    transform var(--nav-transition-normal);
  z-index: 1200; /* Above top-header (999) and content */
  pointer-events: none;
}

/* Arrow pointer */
.nav-flyout::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 14px;
  border: 6px solid transparent;
  border-right-color: var(--pro-border-color);
  border-left: none;
}

.nav-flyout::after {
  content: '';
  position: absolute;
  left: -4px;
  top: 15px;
  border: 5px solid transparent;
  border-right-color: var(--pro-bg-elevated);
  border-left: none;
}

/* Flyout Title */
.nav-flyout-title {
  padding: 6px 10px 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--pro-text-muted);
  border-bottom: 1px solid var(--pro-border-muted);
  margin-bottom: 4px;
}

/* Flyout Links */
.nav-flyout .nav-link {
  display: flex;
  align-items: center;
  height: 32px;
  padding: 0 10px;
  border-radius: var(--nav-item-radius);
  color: var(--pro-text-secondary);
  text-decoration: none;
  font-size: var(--nav-font-size);
  transition: 
    background var(--nav-transition-fast),
    color var(--nav-transition-fast);
}

.nav-flyout .nav-link:hover {
  background: var(--pro-bg-tertiary);
  color: var(--pro-text-primary);
}

.nav-flyout .nav-link.active {
  background: var(--user-accent-muted, var(--pro-accent-primary-muted));
  color: var(--user-accent, var(--pro-accent-primary));
  font-weight: 500;
  border-left: 2px solid var(--user-accent, var(--pro-accent-primary));
  padding-left: 10px;
}

.nav-flyout .nav-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0.7;
  margin-right: 8px;
  flex-shrink: 0;
}

.nav-flyout .nav-link:hover .nav-icon,
.nav-flyout .nav-link.active .nav-icon {
  opacity: 1;
}

/* Enable flyout display in collapsed mode */
.sidebar.collapsed .nav-flyout {
  display: block;
}

/* Show flyout on hover */
.sidebar.collapsed .nav-group:hover .nav-flyout,
.sidebar.collapsed .nav-standalone:hover .nav-flyout {
  opacity: 1;
  visibility: visible;
  transform: translateX(0) scale(1);
  pointer-events: auto;
}

/* Invisible bridge to prevent flyout closing */
.sidebar.collapsed .nav-group::after,
.sidebar.collapsed .nav-standalone::after {
  content: '';
  position: absolute;
  left: 40px;
  top: 0;
  width: calc(var(--sidebar-width-collapsed, 56px) - 40px + 4px);
  height: 100%;
  pointer-events: auto;
}

/* ============================================
   TOOLTIP (Standalone items in collapsed mode)
   ============================================ */
.sidebar.collapsed .nav-standalone .nav-link:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: var(--sidebar-width-collapsed, 56px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--pro-bg-elevated);
  color: var(--pro-text-primary);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--pro-shadow-md);
  border: 1px solid var(--pro-border-color);
  z-index: 1100;
}

/* ============================================
   MOBILE NAVIGATION STYLES
   ============================================ */

/* ============================================
   SIDEBAR TOGGLE BUTTON (Desktop collapse)
   ============================================ */
.sidebar-toggle {
  position: absolute;
  bottom: 60px; /* Above the install button footer */
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 36px;
  background: var(--pro-bg-tertiary);
  border: 1px solid var(--pro-border-color);
  border-radius: 8px;
  color: var(--pro-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--nav-transition-normal);
  z-index: 10;
}

.sidebar-toggle:hover {
  background: var(--user-accent, var(--pro-accent-primary));
  color: white;
  border-color: var(--user-accent, var(--pro-accent-primary));
}

.sidebar-toggle .toggle-icon {
  font-size: 12px;
  transition: transform var(--nav-transition-slow);
}

/* Rotate icon when sidebar is collapsed */
.sidebar.collapsed .sidebar-toggle .toggle-icon {
  transform: rotate(180deg);
}

[data-nav-position="top"] .nav-standalone {
    margin-bottom: 0 !important;
}

/* ============================================
   HAMBURGER MENU BUTTON (Mobile)
   ============================================ */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--pro-border-color);
  border-radius: 8px;
  cursor: pointer;
  gap: 5px;
  transition: all var(--nav-transition-normal);
}

.hamburger-menu:hover {
  background: var(--pro-bg-tertiary);
  border-color: var(--pro-border-emphasis);
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--pro-text-secondary);
  border-radius: 1px;
  transition: all var(--nav-transition-normal);
}

/* Animate to X when active */
.hamburger-menu.active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-menu.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger-menu.active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  /* Show hamburger on mobile */
  .hamburger-menu {
    display: flex;
  }
  
  /* Hide sidebar toggle on mobile */
  .sidebar-toggle {
    display: none;
  }
  
  .sidebar-nav {
    padding: 8px 0;
  }

  .nav-section-title {
    padding: 12px 16px 8px;
  }

  /* Hide flyouts on mobile */
  .nav-flyout {
    display: none !important;
  }
}

/* ============================================
   THEME OVERRIDES - Light Theme
   ============================================ */
[data-theme="light"] .nav-group-header:hover {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .nav-group-header:active {
  background: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .nav-group-items .nav-link:hover {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .nav-standalone .nav-link:hover {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .nav-standalone .nav-link:active {
  background: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .nav-flyout {
  background: var(--pro-bg-elevated);
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.08),
    0 0 0 1px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .nav-flyout::after {
  border-right-color: var(--pro-bg-elevated);
}

[data-theme="light"] .nav-flyout .nav-link:hover {
  background: rgba(0, 0, 0, 0.04);
}

/* ============================================
   THEME OVERRIDES - Even Funkier Theme
   ============================================ */
[data-theme="even-funkyer"] .nav-group-header:hover {
  background: var(--pro-accent-primary-muted);
  color: var(--pro-accent-primary);
}

[data-theme="even-funkyer"] .nav-group.has-active > .nav-group-header {
  color: var(--pro-accent-secondary);
  background: var(--pro-accent-secondary-muted);
}

[data-theme="even-funkyer"] .nav-group-items .nav-link:hover {
  background: var(--pro-accent-primary-muted);
  color: var(--pro-accent-primary);
}

[data-theme="even-funkyer"] .nav-group-items .nav-link.active {
  background: var(--pro-accent-secondary-muted);
  color: var(--pro-accent-secondary);
  border-left-color: var(--pro-accent-secondary);
  box-shadow: inset 3px 0 8px rgba(0, 255, 255, 0.3);
}

[data-theme="even-funkyer"] .nav-standalone .nav-link:hover {
  background: var(--pro-accent-primary-muted);
  color: var(--pro-accent-primary);
}

[data-theme="even-funkyer"] .nav-standalone .nav-link.active {
  background: var(--pro-accent-secondary-muted);
  color: var(--pro-accent-secondary);
}

/* Even Funkier - Collapsed sidebar active states */
[data-theme="even-funkyer"] .sidebar.collapsed .nav-group.has-active > .nav-group-header {
  background: var(--pro-accent-secondary-muted);
  box-shadow: inset 0 0 0 2px var(--pro-accent-secondary), 0 0 8px rgba(0, 255, 255, 0.3);
}

[data-theme="even-funkyer"] .sidebar.collapsed .nav-group.has-active > .nav-group-header .nav-icon {
  color: var(--pro-accent-secondary);
  text-shadow: 0 0 8px rgba(0, 255, 255, 0.5);
}

[data-theme="even-funkyer"] .sidebar.collapsed .nav-standalone .nav-link.active {
  background: var(--pro-accent-secondary-muted);
  box-shadow: inset 0 0 0 2px var(--pro-accent-secondary), 0 0 8px rgba(0, 255, 255, 0.3);
}

[data-theme="even-funkyer"] .nav-flyout {
  background: var(--pro-bg-secondary);
  border-color: var(--pro-accent-primary);
  box-shadow: 
    0 0 20px rgba(255, 0, 255, 0.3),
    0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="even-funkyer"] .nav-flyout::before {
  border-right-color: var(--pro-accent-primary);
}

[data-theme="even-funkyer"] .nav-flyout::after {
  border-right-color: var(--pro-bg-secondary);
}

[data-theme="even-funkyer"] .nav-flyout .nav-link:hover {
  background: var(--pro-accent-primary-muted);
  color: var(--pro-accent-primary);
}

[data-theme="even-funkyer"] .nav-flyout .nav-link.active {
  background: var(--pro-accent-secondary-muted);
  color: var(--pro-accent-secondary);
  border-left-color: var(--pro-accent-secondary);
  box-shadow: inset 3px 0 8px rgba(0, 255, 255, 0.3);
}

/* ============================================
   ACCESSIBILITY - Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .nav-group-header,
  .nav-group-items,
  .nav-group-items .nav-link,
  .nav-standalone .nav-link,
  .nav-group-chevron,
  .nav-flyout {
    transition: none !important;
  }
}

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */
@media (prefers-contrast: high) {
  .nav-group-header:focus-visible,
  .nav-group-items .nav-link:focus-visible,
  .nav-standalone .nav-link:focus-visible {
    outline: var(--focus-ring-width) var(--focus-ring-style) var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset-inset);
    box-shadow: var(--focus-ring-shadow-inset);
  }

  .nav-group-items .nav-link.active,
  .nav-standalone .nav-link.active {
    border: 2px solid var(--user-accent, var(--pro-accent-primary));
  }
}

/* ============================================
   BOOTSTRAP NAV THEME OVERRIDES
   Using --pro-* variables for theme consistency
   ============================================ */

.nav-link {
  color: var(--pro-text-secondary);
}

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

.nav-link.active {
  color: var(--pro-primary);
}

.nav-tabs {
  border-bottom-color: var(--pro-border);
}

.nav-tabs .nav-link {
  border-color: transparent;
}

.nav-tabs .nav-link:hover,
.nav-tabs .nav-link:focus {
  border-color: var(--pro-border) var(--pro-border) transparent;
}

.nav-tabs .nav-link.active {
  background-color: var(--pro-bg-primary);
  border-color: var(--pro-border) var(--pro-border) var(--pro-bg-primary);
  color: var(--pro-text-primary);
}

/* ==========================================================================
   NAVIGATION PLAYGROUND DEMO
   ========================================================================== */

/* Position Buttons */
.navigation-demo__position-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.navigation-demo__position-btn.active {
    background: var(--pro-accent-primary);
    border-color: var(--pro-accent-primary);
    color: #fff;
}

/* State Grid */
.navigation-demo__state-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.navigation-demo__state-card {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    background: var(--pro-bg-tertiary, #1a1a1a);
    border: 1px solid var(--pro-border-color, #333);
    border-radius: var(--pro-radius-sm, 6px);
}

.navigation-demo__state-label {
    font-size: 0.75rem;
    color: var(--pro-text-secondary, #888);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.navigation-demo__state-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--pro-text-primary, #e0e0e0);
}

/* API Grid */
.navigation-demo__api-grid {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.navigation-demo__api-group h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pro-text-primary, #e0e0e0);
    margin: 0 0 0.5rem;
}

.navigation-demo__api-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Simulated Navigation */
.navigation-demo__sim-nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.navigation-demo__sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem;
    background: var(--pro-bg-secondary, #0d0d0d);
    border: 1px solid var(--pro-border-color, #333);
    border-radius: var(--pro-radius-md, 8px);
    max-width: 280px;
}

.navigation-demo__nav-standalone {
    margin-bottom: 0.25rem;
}

.navigation-demo__nav-link {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--pro-radius-sm, 6px);
    color: var(--pro-text-secondary, #888);
    text-decoration: none;
    font-size: 0.875rem;
    transition: background-color 0.15s ease, color 0.15s ease;
    cursor: pointer;
}

.navigation-demo__nav-link:hover {
    background: var(--pro-bg-tertiary, #1a1a1a);
    color: var(--pro-text-primary, #e0e0e0);
}

.navigation-demo__nav-link.active {
    background: var(--pro-accent-primary-muted, rgba(47, 129, 247, 0.15));
    color: var(--pro-accent-primary, #2f81f7);
    font-weight: 500;
}

.navigation-demo__nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    font-size: 0.875rem;
    opacity: 0.7;
}

.navigation-demo__nav-link:hover .navigation-demo__nav-icon,
.navigation-demo__nav-link.active .navigation-demo__nav-icon {
    opacity: 1;
}

.navigation-demo__nav-text {
    flex: 1;
}

/* Nav Group */
.navigation-demo__nav-group {
    margin-bottom: 0.25rem;
}

.navigation-demo__nav-group-header {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: var(--pro-radius-sm, 6px);
    background: transparent;
    color: var(--pro-text-secondary, #888);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.navigation-demo__nav-group-header:hover {
    background: var(--pro-bg-tertiary, #1a1a1a);
    color: var(--pro-text-primary, #e0e0e0);
}

.navigation-demo__nav-chevron {
    margin-left: auto;
    font-size: 0.625rem;
    opacity: 0.5;
    transition: transform 0.2s ease;
}

.navigation-demo__nav-group.expanded .navigation-demo__nav-chevron {
    transform: rotate(90deg);
    opacity: 0.8;
}

.navigation-demo__nav-group-items {
    display: flex;
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    margin: 0;
    list-style: none;
    transition: max-height 0.25s ease;
}

.navigation-demo__nav-group.expanded .navigation-demo__nav-group-items {
    max-height: 200px;
    padding-top: 0.25rem;
}

.navigation-demo__nav-group-items .navigation-demo__nav-link {
    padding-left: 2.25rem;
    font-size: 0.8125rem;
}

.navigation-demo__sim-controls {
    display: flex;
    gap: 0.5rem;
}

/* API Result Display */
.navigation-demo__result {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--pro-bg-tertiary, #1a1a1a);
    border: 1px solid var(--pro-border-color, #333);
    border-radius: var(--pro-radius-sm, 6px);
    font-family: var(--font-mono, monospace);
    font-size: 0.875rem;
}

.navigation-demo__result-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.navigation-demo__result-method {
    color: var(--pro-text-secondary, #888);
}

.navigation-demo__result-arrow {
    color: var(--pro-text-muted, #666);
}

.navigation-demo__result-value {
    font-weight: 600;
}

.navigation-demo__result-value--string {
    color: var(--pro-color-success, #22c55e);
}

.navigation-demo__result-value--boolean {
    color: var(--pro-color-warning, #eab308);
}

.navigation-demo__result-value--number {
    color: var(--pro-accent-secondary, #a855f7);
}

.navigation-demo__result-value--object {
    color: var(--pro-accent-primary, #2f81f7);
}

.navigation-demo__result-type {
    font-size: 0.75rem;
    color: var(--pro-text-muted, #666);
    margin-left: 0.25rem;
}

[data-theme="light"] .navigation-demo__result {
    background: var(--pro-bg-tertiary, #f1f3f5);
    border-color: var(--pro-border-color, #dee2e6);
}

/* Event Log */
.navigation-demo__event-log {
    max-height: 200px;
    overflow-y: auto;
    padding: 0.75rem;
    background: var(--pro-bg-tertiary, #1a1a1a);
    border: 1px solid var(--pro-border-color, #333);
    border-radius: var(--pro-radius-sm, 6px);
    font-family: var(--font-mono, monospace);
    font-size: 0.75rem;
}

.navigation-demo__event-empty {
    color: var(--pro-text-muted, #666);
    font-style: italic;
}

.navigation-demo__event-entry {
    display: flex;
    gap: 0.75rem;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--pro-border-muted, #222);
}

.navigation-demo__event-entry:last-child {
    border-bottom: none;
}

.navigation-demo__event-time {
    color: var(--pro-text-muted, #666);
    flex-shrink: 0;
}

.navigation-demo__event-type {
    display: inline-block;
    padding: 0.125rem 0.375rem;
    background: var(--pro-bg-elevated, #252525);
    border-radius: 3px;
    color: var(--pro-text-secondary, #888);
    text-transform: uppercase;
    font-size: 0.625rem;
    letter-spacing: 0.03em;
    flex-shrink: 0;
}

.navigation-demo__event-entry--position .navigation-demo__event-type {
    background: var(--pro-accent-primary-muted, rgba(47, 129, 247, 0.15));
    color: var(--pro-accent-primary, #2f81f7);
}

.navigation-demo__event-entry--api .navigation-demo__event-type {
    background: var(--pro-color-success-muted, rgba(34, 197, 94, 0.15));
    color: var(--pro-color-success, #22c55e);
}

.navigation-demo__event-entry--group .navigation-demo__event-type {
    background: var(--pro-color-warning-muted, rgba(234, 179, 8, 0.15));
    color: var(--pro-color-warning, #eab308);
}

.navigation-demo__event-entry--navigate .navigation-demo__event-type {
    background: var(--pro-accent-secondary-muted, rgba(168, 85, 247, 0.15));
    color: var(--pro-accent-secondary, #a855f7);
}

.navigation-demo__event-message {
    color: var(--pro-text-primary, #e0e0e0);
    flex: 1;
}

/* Settings Display */
.navigation-demo__settings {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.navigation-demo__settings .badge {
    font-weight: 400;
}

.navigation-demo__settings .badge strong {
    font-weight: 600;
}

/* Light Theme */
[data-theme="light"] .navigation-demo__state-card {
    background: var(--pro-bg-tertiary, #f1f3f5);
    border-color: var(--pro-border-color, #dee2e6);
}

[data-theme="light"] .navigation-demo__sidebar-nav {
    background: var(--pro-bg-secondary, #f8f9fa);
    border-color: var(--pro-border-color, #dee2e6);
}

[data-theme="light"] .navigation-demo__event-log {
    background: var(--pro-bg-tertiary, #f1f3f5);
    border-color: var(--pro-border-color, #dee2e6);
}

/* Responsive */
@media (max-width: 768px) {
    .navigation-demo__state-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .navigation-demo__position-buttons,
    .navigation-demo__api-buttons,
    .navigation-demo__sim-controls {
        flex-direction: column;
    }

    .navigation-demo__position-buttons .btn,
    .navigation-demo__api-buttons .btn,
    .navigation-demo__sim-controls .btn {
        width: 100%;
    }

    .navigation-demo__sidebar-nav {
        max-width: none;
    }

    .navigation-demo__settings {
        flex-direction: column;
    }
}