/* base.css — shared structure loaded under every theme.
   Keep this minimal: only things that are true regardless of theme.
   Anything visual/aesthetic belongs in a theme file under themes/. */

/* The theme switcher is always pinned to the top-right corner, so every
   theme (including the unstyled "plain" one) gets it in the right place
   for free. A theme may override this if it wants to. */
#theme-switcher {
  position: fixed;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 1000;
}

/* Stop oversized media from blowing out the layout. */
img {
  max-width: 100%;
  height: auto;
}