/* ==========================================================================
   NAVIGATION COMPONENTS
   ========================================================================== */

/* Sidebar Navigation */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg);
  color: var(--gray-600);
  padding: var(--space-4);
  overflow-y: auto;
  z-index: 1000;
}

.sidebar-brand {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: var(--space-4);
  text-align: center;
}

.sidebar-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  transition: background var(--transition);
}

.sidebar-nav a:hover,
.sidebar-nav .active > a {
  background: var(--gray-100);
}

.menu-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* Submenu System */
.has-submenu > a {
  cursor: pointer;
}

.submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
  margin-top: 4px;
}

.has-submenu.open .submenu {
  max-height: 500px;
}

.submenu li {
  padding-left: 20px;
}

.submenu li a {
  padding: var(--space-3) var(--space-4);
}

/* Tab Navigation */
.nav-tabs-container {
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.nav-tabs {
  display: flex;
  gap: var(--space-2);
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 3px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-tab:hover {
  color: var(--primary);
  background: var(--gray-50);
}

.nav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: var(--gray-50);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Mobile Header */
.mobile-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg);
  color: var(--gray-700);
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  z-index: 999;
}

.hamburger-btn {
  background: none;
  border: none;
  color: var(--gray-700);
  cursor: pointer;
  padding: var(--space-2);
}

/* View Toggle */
.view-toggle {
  display: flex;
  gap: 0.25rem;
  background: var(--gray-100);
  padding: 0.25rem;
  border-radius: var(--radius);
}

.view-btn {
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.view-btn.active {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow);
}

/* Submenu Toggle Icons */
.submenu-toggle {
  cursor: pointer;
}

.submenu-toggle .icon-cont:last-child svg,
.submenu-toggle .icon-cont:last-child > * {
  transition: transform var(--transition);
  transform-origin: center;
}

.has-submenu.open .submenu-toggle .icon-cont:last-child svg,
.has-submenu.open .submenu-toggle .icon-cont:last-child > * {
  transform: rotate(180deg);
}

.submenu-toggle > .icon-cont:nth-child(2) svg,
.submenu-toggle > .icon-cont:nth-child(2) > * {
  transition: transform var(--transition);
  transform-origin: center;
}

.has-submenu.open .submenu-toggle > .icon-cont:nth-child(2) svg,
.has-submenu.open .submenu-toggle > .icon-cont:nth-child(2) > * {
  transform: rotate(180deg);
}

.submenu-toggle .menu-label .icon-cont,
.submenu-toggle .menu-label .icon-cont svg,
.submenu-toggle .menu-label .icon-cont > * {
  transform: none !important;
}

/* Sidebar Notification Badges */
.sidebar-badge {
  font-size: 0.6rem;
  padding: 0;
  min-width: 1.1rem;
  height: 1.1rem;
  line-height: 1.1rem;
  text-align: center;
  border-radius: 50%;
  margin-left: auto;
  flex-shrink: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .mobile-header { 
    display: flex; 
  }
  
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition);
  }
  
  .sidebar.open { 
    transform: translateX(0); 
  }
}