I am looking for some resources to design visually pleasing HTML forms. I can write the CSS, so even examples would be great.
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This might give you an idea:
There are few things to consider when re-designing form elements:
You need figure out if all of your form elements can truly be modified by CSS only. Some form elements can't be designed/changed (file browse element for example). You are pretty much stuck with browser default look/feel if your form has file browse input.
Though I would avoid relying on JS to re-style forms. Mainly because browser compatibility is always going to be problem.
I am not allowed to post more links but search Smashing Magazine with keywords 'form design' you get plenty of links.