Fixes audio mode duration doubled in iPhone iOS browsers. The player will stop after reaching the real duration.
iOS() checks both iOS and iPadOS.
Only tested on iPhone iOS browsers. Testers needed for behavior of iPadOS and MacOS.
Besides `auto`, `best` and `worst` it is now possible to select a target height.
If the target height is not available the closest lower height is selected.
Now that themes are controlled with a class instead of setting
media="none" on the stylesheet link and both themes already being
duplicated in default.css for the automatic themeing it makes sense
to have all theme related CSS in the same place.
This commit also fixes the missing dark theme on embeds.
Themes are now controlled with a class on the body element.
If a preference is set the body element will have either "dark-theme"
or "light-theme" class. If no preference is set or the preference is
empty the class will be "no-theme".
"dark-theme" and "light-theme" are handled by darktheme.css and
lighttheme.css respectively.
"no-theme" is handled by default.css where depending on the value of
"prefers-color-scheme" the styles corresponding to "dark-theme" or
"light-theme" are applied.
Unfortunately this means that both themes are duplicated, once in the
theme .css and once in default.css.
This fixes a quite severe user experience issue where pressing the
'alt', 'meta' and/or 'ctrl' key along with one of the supported keys
(e.g. 'f' to enter video fullscreen mode) would overwrite the default
browser behavior. In the case of 'f+meta' we would enter fullscreen
mode, and not open the browser search panel as one might expect.
This change is required to stay consistent with the way YouTube
handles keydown events.