Mailspring/app/internal_packages/ui-darkside/styles/darkside-toolbars.less

@import "darkside-variables";

.sheet-toolbar {
  border: none;
}

.sheet-toolbar-container {
  background: transparent;
  box-shadow: none;
  border: none;
}

.sheet-toolbar .selection-bar .absolute {
  left: 0;
  right: 0;
  border-left: none;
  border-right: none;
  background: none;
}

// Match left and right alignment across all toolbars
.toolbar-RootSidebar,
.toolbar-MessageList,
.toolbar-MessageListSidebar,
.toolbar-Center,
.toolbar-Preferences {
  height: 100%;
  padding-left: @sidebar-margin;
  padding-right: @sidebar-margin;
}

// Slightly darker toolbar for Prefs, Single Panel Messages, and Popout
.toolbar-Preferences,
.layout-mode-list .toolbar-MessageList,
.sheet-toolbar-container.mode-popout {
  background: transparent;
  background-color: tint(@sidebar, 90%);
  border: none;
}

// jackiehluo -> (themes): Fixes Windows button UI issues in #1649
body.platform-win32 .sheet-toolbar-container .btn-toolbar:hover {
  background: none;
}

// Centering vertially without magic numbers
.layout-mode-popout .toolbar-window-controls {
  margin-top: 0;
}

.sheet-toolbar .item-container .window-title {
  position: static;
  // compensate for width of .toolbar-window-controls
  transform: translateX(-25px);
}

.sheet-toolbar .btn-toolbar {
  box-shadow: 0 0 0 1px @border-color;
}

// Let toolbar define outer padding/margin
.sheet-toolbar .btn-toolbar:only-of-type {
  margin-right: 0;
}

.btn-toolbar.mode-toggle.mode-false img.content-mask {
  background-color: @accent;
}