her button {
            margin: 0 5px;
            padding: 5px 10px;
            border: 1px solid var(--fc-border, #dee2e6);
            border-radius: var(--fc-radius-small, 4px);
            background: var(--fc-surface, #ffffff);
            color: var(--fc-text, #212529);
            cursor: pointer;
        }
        
        .theme-switcher button:hover {
            background: var(--fc-primary, #007bff);
            color: white;
        }
        
        .code-block {
            background: va