[libadwaita] (34 commits) Non-fast-forward update to branch wip/exalm/card

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/card' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  1665f7f... stylesheet: Add a .card style class
  f99e628... stylesheet: Add button.opaque style class

Commits added to the branch:

  bdf1f8f... stylesheet: Remove a redundant rule from treeview (*)
  e648cec... stylesheet: Simplify needs-attention indicator (*)
  46c0cdf... stylesheet: Use accent_color for needs attention indicator (*)
  80e6203... stylesheet: Simplify transition shadow (*)
  3521f00... stylesheet: Don't vary infobar color between light and dark (*)
  8ec9a6b... stylesheet: Make drop target color follow accent (*)
  b7519c9... stylesheet: Extract window border and outline colors (*)
  d631d56... stylesheet: Drop $alt_focus_border_color (*)
  4dcd3e6... stylesheet: Remove an if() from tab bar styles (*)
  48e8c62... stylesheet: Remove an if() from color swatches (*)
  716bfbb... stylesheet: Remove notebook header background (*)
  cd5084e... stylesheet: Use header bar styling for search bar (*)
  a716b81... stylesheet: Remove $dark_fill (*)
  5bcb32f... stylesheet: Move $shade_color to _colors.scss (*)
  238acd6... stylesheet: Add .inline style class for tab bars (*)
  76f3028... stylesheet: Drop toolbar background (*)
  9fe1ce4... stylesheet: Use headerbar border for headerbar separators (*)
  13288fd... stylesheet: borders_color -> border_color (*)
  fba3458... stylesheet: Rename base/text/bg/fg_color variables (*)
  5e9d213... stylesheet: Make everything recolorable (*)
  ad13d0d... stylesheet: Stop referring to color variables from _default (*)
  7df2bde... stylesheet: Split base and defaults (*)
  27cd7b4... stylesheet: Add a .card style class
  e017163... stylesheet: Add button.opaque style class
  221b15c... stylesheet: Consistently support colored styles between but
  6864c83... stylesheet: Support .pill for menu buttons
  05e05ee... stylesheet: Stop supporting .flat+suggested/destructive-act
  27ba754... stylesheet: More thorough entry.error and .warning styles
  5fcee81... stylesheet: Fix flat/outline buttons in toolbar popovers
  f02e291... stylesheet: Remove overlay osd overrides for toolbars
  3a51055... stylesheet: Normalize padding for osd toolbars
  e5c78c6... stylesheet: Adjust margins for scalebuttons in toolbars
  169ba02... stylesheet: Make .navigation-sidebar remove background like
  0ff929c... demo: Add a style classes demo page

(*) This commit already existed in another branch; no separate mail sent