Unavailable characteristics

Hi,

There is no option for that. What you can do is to turn off the "Display out of stock products" setting of the HikaShop configuration:
www.hikashop.com/support/documentation/5...ig.html#main_product
This way, variants without stock won't be proposed to the customer.

Note however that for products with several characteristics, it's still possible that radios for out of stock variants are proposed to the user if you have turned off the "Characteristics dynamic display" setting:
www.hikashop.com/support/documentation/5...html#display_product

Hi,

The input and label tags are generated by the Joomla library. Adding a class to them is not easy.
The code is in libraries/src/HTML/Helpers/Select.php but I recommend you to not change it.
Instead, you can add modifications in the product / show_block_characteristic view file via the menu Display>Views of HikaShop.

Also, knowing if a radio needs a class or not is complex. That's because when you have several characteristics for a product, a radio (which is for a value of a characteristic) can be for several variants.
For example, suppose I sell a t-shirt with a characteristic "color" with the values "red", "blue" and "green", and a second characteristic "size" with the values "S", "M" and "L".
For the radio "red", there are 3 variants: red/S, red/M and red/L.
So, you can't effectively set a class based on the stock of a variant since there are several variants for the radio.
The only case would be if all 3 variants for that "red" radio have a stock of 0, but in that case, the radio won't appear at all (see what I wrote in my previous message).
So that's why we can't add a class for the stock on the radios.