body {
      font-family: 'Poppins', sans-serif;
      color: #333;
      background-color: #f8fafc;
    }
    
    .sidebar-link {
      border-left: 3px solid transparent;
      transition: all 0.2s ease;
    }
    
    .sidebar-link:hover, .sidebar-link.active {
      background-color: rgba(8, 145, 178, 0.1);
      border-left-color: #0891b2;
      color: #0891b2;
    }
    
    .tab-content {
      display: none;
      animation: fadeIn 0.3s ease-in;
    }
    
    .tab-content.active {
      display: block;
    }
    
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    
    .empty-state {
      transition: all 0.3s ease;
    }
    
    .empty-state:hover {
      transform: translateY(-5px);
    }
    
    .form-input {
      transition: all 0.2s ease;
    }
    
    .form-input:focus {
      border-color: #0891b2;
      box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
    }
    
    .notification-item {
      transition: all 0.2s ease;
    }
    
    .notification-item:hover {
      background-color: #f8fafc;
    }
    
    .notification-item.unread {
      background-color: #f0f9ff;
      border-left: 3px solid #0891b2;
    }
    
    .address-card, .payment-card {
      transition: all 0.3s ease;
      border: 1px solid #e2e8f0;
    }
    
    .address-card:hover, .payment-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    }
    
    .address-card.default, .payment-card.default {
      border-color: #0891b2;
      background-color: #f0f9ff;
    }
    
    @media (max-width: 768px) {
      .sidebar {
        transform: translateX(-100%);
      }
      
      .sidebar.open {
        transform: translateX(0);
      }
    }