There are a couple solutions. The solution I would recommend is to remove the actions that prints the price & title in the first place. The main reason I suggest programmatically removing the actions is because it is theme independent. These modifications should work for any theme and you don't have to worry about CSS specificity or any of that nonsense.
If you were using a custom theme you could just put a couple of lines into your functions.php file but since you are using a theme that will just override your changes on the next update I suggest creating your own woocommerce plugin. It isn't as scary as it sounds. In fact, I believe this little plugin I just whipped up does everything you need.
<?php
/*
Plugin Name: My WooCommerce Modifications
Plugin URI: http://woothemes.com/
Description: Modificatinos to my WooCommerce site
Version: 1.0
Author: Patrick Rauland
Author URI: http://www.patrickrauland.com/
License: GPL version 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*/
/* Copyright 2013 Patrick Rauland
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* Check if WooCommerce is active
**/
if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
// remove default woocommerce actions
function my_woocommerce_modifications()
{
// hide product price on category page
remove_action( 'woocommerce_after_shop_loop_item_title', 'woocommerce_template_loop_price', 10);
// hide add to cart button on category page
remove_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart', 10);
}
add_action( 'init', 'my_woocommerce_modifications' );
// remove the title on the category shop page
function my_woocommerce_title_modifications($title, $id)
{
// if we're on the category shop page then return nothing.
if(in_the_loop() && is_product_category())
{
return "";
}
return $title;
}
add_filter( 'the_title', 'my_woocommerce_title_modifications');
}
Here's the version controlled gist if you ever need it.