:root {
            --color-primary: #2c3e50;
            --color-secondary: #3498db;
            --color-success: #2ecc71;
            --color-danger: #e74c3c;
            --color-warning: #f39c12;
            --color-light: #f8f9fa;
        }
        
        .system-body {
            background-color: var(--color-light);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            min-height: 100vh;
        }
        
        .system-header {
            color: #2c3e50;
            padding: 1.5rem 0;

  
        }
        
        .card-form {
            border: none;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            margin-bottom: 2rem;
        }
        
        .card-header-custom {
            background-color: var(--color-primary);
            color: white;
            border-radius: 10px 10px 0 0 !important;
            font-weight: 500;
            padding: 1.5rem;
        }
        
        .form-label-custom {
            font-weight: 500;
            color: var(--color-primary);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
        }
        
        .form-control-custom {
            border: 2px solid #e9ecef;
            border-radius: 8px;
            padding: 0.75rem 1rem;
            transition: all 0.3s ease;
        }
        
        .form-control-custom:focus {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
        }
        
        .form-select-custom {
            border: 2px solid #e9ecef;
            border-radius: 8px;
            padding: 0.75rem 1rem;
            transition: all 0.3s ease;
        }
        
        .form-select-custom:focus {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
        }
        
        .btn-register {
            background: linear-gradient(135deg, var(--color-secondary) 0%, #2980b9 100%);
            border: none;
            border-radius: 8px;
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .btn-register:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
        }
        
        .icon-form {
            margin-right: 0.5rem;
            font-size: 1.2rem;
        }
        
        .password-toggle {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #6c757d;
            z-index: 5;
        }
        
        .password-container {
            position: relative;
        }
        
        .role-badge {
            padding: 0.35em 0.65em;
            border-radius: 50px;
            font-size: 0.75em;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        
        .badge-admin {
            background-color: rgba(231, 76, 60, 0.2);
            color: var(--color-danger);
        }
        
        .badge-staff {
            background-color: rgba(46, 204, 113, 0.2);
            color: var(--color-success);
        }
        
        @media (max-width: 768px) {
            .card-form {
                margin: 1rem;
            }
            
            .system-header {
                margin-bottom: 1rem;
            }
        }