The stripes were 45deg with a 14px period, which repeats every 19.8px
horizontally, but the background tile and animation step were 28px, so
every tile cut a stripe and the loop visibly jumped. Stripe spacing is
now 28/sqrt(2) so the horizontal period is exactly 28px, painted once
on an untiled layer 28px wider than the bar and slid by one period with
a transform. Verified by comparing rendered frames: the end of the loop
is pixel-identical to its start.
Error and warning states now use a data-tone attribute (solid red or
yellow, no stripes) instead of inline backgrounds.
Andy Dixon
e2f9c317c6
