.header-updated {
                    position: relative;
                    color: #2c3e50;
                    font-weight: 600;
                    transition: color 0.3s ease;
                }
                
                .header-updated::after {
                    content: ' (from document)';
                    font-size: 0.8em;
                    color: #3498db;
                    font-weight: normal;
                    font-style: italic;
                    margin-left: 5px;
                }
                
                .assignment-toast.info {
                    background: #3498db;
                    color: white;
                    border-left: 4px solid #2980b9;
                }
                
                .assignment-toast.info i {
                    color: white;
                }