:root {
      --header-bg: #f0f0f0;
      --footer-bg: #094574;
      --primary: #0a66c2;
      --primary-dark: #084e96;
      --text-light: #ffffff;
      --text-dark: #333333;
      --text-muted: #6c757d;
      --border: #e0e0e0;
      --sidebar-width: 280px;
      --sidebar-collapsed-width: 80px;
      --transition-speed: 0.3s;
    }
    .layout {
      display: flex;
      min-height: 100vh;
      flex-direction: column;
    }
    
 
    
    .logo {
      font-size: 24px;
      font-weight: bold;
      color: var(--primary);
      display: flex;
      align-items: center;
    }
    
    .logo-icon {
      color: var(--primary);
      margin-right: 10px;
    }
    
    .main-container {
      display: flex;
      flex: 1;
    }
    
    .sidebar {
      background: linear-gradient(to bottom, var(--primary), var(--primary-dark));
      width: var(--sidebar-width);
      transition: width var(--transition-speed) ease;
      box-shadow: 3px 0 10px rgba(0,0,0,0.1);
      color: var(--text-light);
      position: relative;
      z-index: 50;
      overflow-x: hidden;
    }
    
    .sidebar.collapsed {
      width: var(--sidebar-collapsed-width);
    }
    
    .sidebar-header {
      padding: 20px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .user-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background-color: rgba(255,255,255,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      margin-right: 15px;
      flex-shrink: 0;
    }
    
    .user-info {
      white-space: nowrap;
      overflow: hidden;
      transition: opacity var(--transition-speed) ease;
    }
    
    .collapsed .user-info {
      opacity: 0;
    }
    
    .user-name {
      font-weight: 600;
      margin-bottom: 3px;
    }
    
    .user-role {
      font-size: 12px;
      opacity: 0.8;
    }
    
    .sidebar-content {
      padding: 15px 0;
    }
    
    .sidebar-section {
      margin-bottom: 30px;
    }
    
    .section-title {
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
      opacity: 0.6;
      padding: 0 20px;
      margin-bottom: 10px;
      white-space: nowrap;
      transition: opacity var(--transition-speed) ease;
    }
    
    .collapsed .section-title {
      opacity: 0;
    }
    
    .nav-item {
      padding: 12px 20px;
      display: flex;
      align-items: center;
      cursor: pointer;
      transition: background-color 0.2s;
      position: relative;
      white-space: nowrap;
    }
    
    .nav-item:hover {
      background-color: rgba(255,255,255,0.1);
    }
    
    .nav-item.active {
      background-color: rgba(255,255,255,0.15);
    }
    
    .nav-item.active::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      height: 100%;
      width: 4px;
      background-color: var(--text-light);
    }
    
    .nav-icon {
      margin-right: 15px;
      font-size: 18px;
      width: 22px;
      text-align: center;
      flex-shrink: 0;
    }
    
    .nav-text {
      transition: opacity var(--transition-speed) ease;
      opacity: 1;
    }
    
    .collapsed .nav-text {
      opacity: 0;
    }
    
    .toggle-sidebar {
      position: absolute;
      bottom: 20px;
      right: 20px;
      background-color: rgba(255,255,255,0.15);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background-color 0.2s;
    }
    
    .collapsed .toggle-sidebar {
      right: 50%;
      transform: translateX(50%);
    }
    
    .toggle-sidebar:hover {
      background-color: rgba(255,255,255,0.25);
    }
    
    .toggle-icon {
      transition: transform var(--transition-speed) ease;
    }
    
    .collapsed .toggle-icon {
      transform: rotate(180deg);
    }
    
    .main-content {
      flex: 1;
      padding: 30px;
      transition: margin-left var(--transition-speed) ease;
    }
    

    
    .badge {
      background-color: rgba(255,255,255,0.25);
      color: white;
      border-radius: 20px;
      padding: 2px 8px;
      font-size: 11px;
      margin-left: auto;
      transition: opacity var(--transition-speed) ease;
    }
    
    .collapsed .badge {
      opacity: 0;
    }

    /* Tooltip for collapsed mode */
    .nav-item {
      position: relative;
    }
    
    .tooltip {
      position: absolute;
      left: 90px;
      background-color: rgba(0,0,0,0.8);
      color: white;
      padding: 5px 10px;
      border-radius: 4px;
      font-size: 14px;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.2s, visibility 0.2s;
      pointer-events: none;
      white-space: nowrap;
      z-index: 1000;
    }
    
    .hidenElt{
        display:none;
    }
    .collapsed .nav-item:hover .tooltip {
      opacity: 1;
      visibility: visible;
    }
    
    /* Dark overlay when sidebar is expanded on mobile */
    .overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0,0,0,0.5);
      z-index: 40;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s, visibility 0.3s;
    }

    .show-overlay .overlay {
      opacity: 1;
      visibility: visible;
    }
    
    /* Responsive */
    @media (max-width: 768px) {
      .sidebar {
        position: fixed;
     
        display:flex;
        width:100%;
        top: 145px;
        overflow:auto;
      }
      .sidebar-section{
          display:flex;
      }
      .section-title {
          display:none;
      }
      .sidebar-content{
          display:flex;
          height:20px;
      }
      .sidebar-header{
          display:none;
      }
      
      .sidebar.collapsed {
        width: var(--sidebar-width);
        left: 0;
      }
      
      .collapsed .user-info,
      .collapsed .nav-text,
      .collapsed .section-title,
      .collapsed .badge {
        opacity: 1;
      }
      
      .mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        cursor: pointer;
      }
      
      .main-content {
        margin-left: 0 !important;
      }
    }