Sorry it's taken me so long to reply, I've been pretty busy the past week.
There is no way to style pseudo states in inline styles. However, what you can do is add a class name in the footer text input, and then style it in your style.css.
In the footer text box:
<p class="some-footer-class'>[...]</p>
In style.css:
.some-footer-class {
font-family: Open Sans;
text-align: center;
font-size: 11px;
}
.some-footer-class:visited {
color: purple;
}
.some-footer-class:hover {
color: red;
}