/* ============================================
   MEDICORE PRO - Dashboard Styles
   ============================================ */

/* ============================================
   LAYOUT STRUCTURE
   ============================================ */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: width var(--transition-slow);
  overflow: hidden;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

/* Sidebar Header */
.sidebar-header {
  height: 80px;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  flex: 1;
  overflow: hidden;
}

.sidebar-logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.sidebar-logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  white-space: nowrap;
  opacity: 1;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-logo-text {
  opacity: 0;
  width: 0;
}

/* Sidebar Toggle Button - Positioned beside logo */
.sidebar-toggle {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--spacing-2);
}

.sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
}

.sidebar-toggle svg {
  width: 18px;
  height: 18px;
  color: white;
  transition: transform var(--transition-base);
}

.sidebar.collapsed .sidebar-toggle svg {
  transform: rotate(180deg);
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-4) 0;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  padding: 0 var(--spacing-3);
}

.sidebar-menu-item {
  position: relative;
}

.sidebar-menu-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  color: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.sidebar-menu-link:hover,
.sidebar-menu-link.active {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.sidebar-menu-link.active {
  background: linear-gradient(90deg, rgba(134, 185, 176, 0.2), transparent);
  border-left: 3px solid var(--color-accent);
}

.sidebar-menu-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-menu-icon svg {
  width: 20px;
  height: 20px;
}

.sidebar-menu-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  opacity: 1;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-menu-text {
  opacity: 0;
  width: 0;
}

/* Submenu */
.sidebar-submenu {
  margin-left: var(--spacing-8);
  margin-top: var(--spacing-2);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-base);
}

.sidebar-menu-item.expanded .sidebar-submenu {
  max-height: 500px;
}

.sidebar-submenu-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  color: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.sidebar-submenu-link:hover,
.sidebar-submenu-link.active {
  color: white;
  background: rgba(255, 255, 255, 0.05);
}

.sidebar-submenu-dot {
  width: 6px;
  height: 6px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
}

.sidebar-submenu-link:hover .sidebar-submenu-dot,
.sidebar-submenu-link.active .sidebar-submenu-dot {
  background: var(--color-accent);
}

/* Menu Toggle Arrow */
.menu-toggle {
  margin-left: auto;
  transition: transform var(--transition-fast);
}

.sidebar-menu-item.expanded .menu-toggle {
  transform: rotate(90deg);
}

.sidebar.collapsed .menu-toggle {
  display: none;
}

/* Sidebar Tooltip (for collapsed state) */
.sidebar-tooltip {
  position: fixed;
  left: calc(var(--sidebar-collapsed) + 10px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 1001;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.sidebar.collapsed .sidebar-menu-item:hover .sidebar-tooltip {
  opacity: 1;
  visibility: visible;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.sidebar-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.sidebar-user-info {
  flex: 1;
  overflow: hidden;
  opacity: 1;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-user-info {
  opacity: 0;
  width: 0;
}

.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: white;
  white-space: nowrap;
}

.sidebar-user-role {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.6);
  white-space: nowrap;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: margin-left var(--transition-slow);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.sidebar.collapsed + .main-content {
  margin-left: var(--sidebar-collapsed);
}

/* ============================================
   TOP NAVBAR
   ============================================ */
.top-navbar {
  height: 80px;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-8);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.page-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--accent-color);
}

.breadcrumb-separator {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

/* Search Bar */
.navbar-search {
  position: relative;
}

.navbar-search input {
  width: 280px;
  padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-10);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.navbar-search input:focus {
  width: 320px;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(0, 173, 181, 0.1);
}

.navbar-search-icon {
  position: absolute;
  left: var(--spacing-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

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

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

/* Notification Bell */
.notification-btn {
  position: relative;
  width: 40px;
  height: 40px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.notification-btn:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.notification-btn svg {
  width: 20px;
  height: 20px;
}

.notification-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  background-color: var(--status-inactive);
  color: white;
  font-size: 10px;
  font-weight: 600;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-primary);
}

/* Notification Dropdown */
.notification-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 360px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 200;
}

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

.notification-header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.notification-header h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
}

.notification-header a {
  font-size: var(--font-size-sm);
  color: var(--accent-color);
}

.notification-list {
  max-height: 320px;
  overflow-y: auto;
}

.notification-item {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-3);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.notification-item:hover {
  background-color: var(--bg-hover);
}

.notification-item:last-child {
  border-bottom: none;
}

.notification-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.notification-icon.appointment {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--status-completed);
}

.notification-icon.payment {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--status-active);
}

.notification-icon.patient {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--status-pending);
}

.notification-icon.prescription {
  background-color: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

.notification-content {
  flex: 1;
}

.notification-content p {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
}

.notification-content span {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.notification-footer {
  padding: var(--spacing-3) var(--spacing-6);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.notification-footer a {
  font-size: var(--font-size-sm);
  color: var(--accent-color);
  font-weight: 500;
}

/* User Profile */
.user-profile {
  position: relative;
}

.user-profile-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) var(--spacing-3) var(--spacing-2) var(--spacing-2);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-profile-btn:hover {
  background-color: var(--bg-hover);
  border-color: var(--accent-color);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.user-role {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.user-arrow {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.user-profile.active .user-arrow {
  transform: rotate(180deg);
}

/* Profile Dropdown */
.profile-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 280px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 200;
  overflow: hidden;
}

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

.profile-header {
  padding: var(--spacing-6);
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.profile-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.profile-info h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-1);
}

.profile-info p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

.profile-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-text {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.9);
}

.profile-menu {
  padding: var(--spacing-2) 0;
}

.profile-menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-6);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.profile-menu-item:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.profile-menu-item svg {
  width: 18px;
  height: 18px;
}

.profile-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: var(--spacing-2) 0;
}

.profile-menu-item.logout {
  color: var(--status-inactive);
}

.profile-menu-item.logout:hover {
  background-color: rgba(239, 68, 68, 0.1);
}

/* ============================================
   DASHBOARD CONTENT
   ============================================ */
.dashboard-content {
  flex: 1;
  padding: var(--spacing-8);
  overflow-y: auto;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  transition: all var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-color);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.patients {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(59, 130, 246, 0.05));
  color: #3b82f6;
}

.stat-icon.doctors {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.05));
  color: #10b981;
}

.stat-icon.appointments {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.05));
  color: #f59e0b;
}

.stat-icon.revenue {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.05));
  color: #8b5cf6;
}

.stat-icon.pending {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(239, 68, 68, 0.05));
  color: #ef4444;
}

.stat-icon.clinics {
  background: linear-gradient(135deg, rgba(0, 173, 181, 0.2), rgba(0, 173, 181, 0.05));
  color: var(--accent-color);
}

.stat-icon svg {
  width: 28px;
  height: 28px;
}

.stat-content {
  flex: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--spacing-1);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.stat-change {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-xs);
}

.stat-change.positive {
  color: var(--status-active);
}

.stat-change.negative {
  color: var(--status-inactive);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.dashboard-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-6);
}

/* Dashboard Cards */
.dashboard-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.dashboard-card-header {
  padding: var(--spacing-5) var(--spacing-6);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dashboard-card-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.dashboard-card-header a {
  font-size: var(--font-size-sm);
  color: var(--accent-color);
}

.dashboard-card-body {
  padding: var(--spacing-6);
}

/* Chart Placeholder */
.chart-placeholder {
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-3);
  height: 200px;
  padding: 0 var(--spacing-6);
}

.chart-bar {
  width: 40px;
  background: linear-gradient(180deg, var(--accent-color), var(--color-secondary));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: all var(--transition-fast);
}

.chart-bar:hover {
  opacity: 0.8;
}

/* Recent Lists */
.recent-list {
  display: flex;
  flex-direction: column;
}

.recent-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--border-color);
}

.recent-item:last-child {
  border-bottom: none;
}

.recent-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.recent-info {
  flex: 1;
  min-width: 0;
}

.recent-info h4 {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recent-info p {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.recent-meta {
  text-align: right;
  flex-shrink: 0;
}

.recent-meta .time {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.recent-meta .amount {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--status-active);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1200px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .dashboard-grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) {
  .top-navbar {
    padding: 0 var(--spacing-4);
  }
  
  .navbar-search input {
    width: 200px;
  }
  
  .navbar-search input:focus {
    width: 240px;
  }
  
  .dashboard-content {
    padding: var(--spacing-4);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width) !important;
  }
  
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0 !important;
  }
  
  .mobile-menu-btn {
    display: flex !important;
  }
  
  .navbar-search {
    display: none;
  }
  
  .user-info {
    display: none;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
}

.mobile-menu-btn svg {
  width: 20px;
  height: 20px;
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}