:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --success-color: #2ecc71;
            --danger-color: #e74c3c;
            --warning-color: #f39c12;
        }
        
        body {
            background-color: #f8f9fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .page-header {

            color: #2c3e50;
            padding: 1.5rem 0;
            margin-bottom: 2rem;

        }
        
        .card {
            border: none;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            margin-bottom: 1.5rem;
        }
        
        .card-header {
            background-color: var(--primary-color);
            color: white;
            border-radius: 10px 10px 0 0 !important;
            font-weight: 500;
        }
        
        .btn-primary {
            background-color: var(--secondary-color);
            border: none;
        }
        
        .btn-primary:hover {
            background-color: #2980b9;
        }
        
        .btn-warning {
            background-color: var(--warning-color);
            border: none;
            color: white;
        }
        
        .btn-warning:hover {
            background-color: #e67e22;
            color: white;
        }
        
        .btn-danger {
            background-color: var(--danger-color);
            border: none;
        }
        
        .btn-danger:hover {
            background-color: #c0392b;
        }
        
        .table th {
            background-color: var(--primary-color);
            color: white;
            font-weight: 500;
        }
        
        .badge-status {
            padding: 0.35em 0.65em;
            border-radius: 50px;
            font-size: 0.75em;
            font-weight: 600;
        }
        
        .badge-admin {
            background-color: rgba(231, 76, 60, 0.2);
            color: var(--danger-color);
        }
        
        .badge-user {
            background-color: rgba(46, 204, 113, 0.2);
            color: var(--success-color);
        }
        
        .icon-wrapper {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
        }
        
        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 1rem;
        }
        .badge-admin {
            background-color: #b93333ff; /* rojo */
            color: #fff;
        }

        .badge-staff {
            background-color: #3cdb34ff; /* azul */
            color: #fff;
        }

        .badge-proyecto {
            background-color: #8b53a2ff; /* morado */
            color: #fff;
        }

        .badge-user {
            background-color: #7f8c8d; /* gris */
            color: #fff;
        }

        
        @media (max-width: 768px) {
            .table-responsive {
                font-size: 0.875rem;
            }
            
            .btn-sm {
                padding: 0.25rem 0.5rem;
                font-size: 0.75rem;
            }
        }