with a SG of 1.0 it means that all of the sugars in the mix have now been turned to alcohol. I.E.- fermentation is complete. the scale on the hydrometer for alcohol content is for potential alcohol content, and just gives you an idea of what your final alcohol will be. the alcohol content scale on the hydrometer is pretty much useless once fermentation has started.
There's nothing wrong with it, it sounds like your wine worked perfectly. Now just go about aging and secondaries as you would, and good luck on your final product.
Primary: blueberry apple cider
Secondary: panty dropper cranberry apple cider
bottled: I should probably get some of those...
on deck: future brews suspended for the moment :(...