Paste #31026

/*
 * Auto-hide the URL-bar and bookmarks bar, show on hover or focus
 *
 * Contributor(s): Alex Vallat
 */

:root[uidensity=compact] #navigator-toolbox {
  --nav-bar-height: 33px;
  --tab-min-height: 29px;
}

:root[uidensity=compact][extradragspace]:not([sizemode="normal"]) #navigator-toolbox {
  --nav-bar-height: 33px;
  --tab-min-height: 21px;
}

:root:not([uidensity]) #navigator-toolbox {
  --nav-bar-height: 39px;
  --tab-min-height: 33px;
}

:root:not([uidensity])[extradragspace]:not([sizemode="normal"]) #navigator-toolbox {
  --nav-bar-height: 39px;
  --tab-min-height: 25px;
}

:root[uidensity=touch] #navigator-toolbox {
  --nav-bar-height: 41px;
  --tab-min-height: 41px;
}

:root[uidensity=touch][extradragspace]:not([sizemode="normal"]) #navigator-toolbox {
  --nav-bar-height: 41px;
  --tab-min-height: 33px;
}

#navigator-toolbox {
  --tabbar-height: calc(var(--tab-min-height) + var(--space-above-tabbar));
  --trigger-area-height: 5px;
}

:root[chromehidden~="toolbar"] #navigator-toolbox {
  --tabbar-height: 0.1px;
}

#toolbar-menubar {
  margin-top: 0px !important; /* This is usually 0, but under Win7 can be given an extra 1px when not maximized */
}

/* Undo add of 4px extra margin on top of the tabs toolbar on Windows 7. */
/* Note: @media -moz-os-version does not work in userChrome.css (https://bugzilla.mozilla.org/show_bug.cgi?id=1418963) */
:root[sizemode="normal"][chromehidden~="menubar"] #TabsToolbar,
:root[sizemode="normal"] #toolbar-menubar[autohide="true"][inactive] + #TabsToolbar {
  padding-top: var(--space-above-tabbar) !important;
}

#nav-bar, #PersonalToolbar {
	/* Otherwise spacers will not count as hover-able areas */
    -moz-window-dragging: default;
}

:root:not([customizing]) #nav-bar
{
  overflow-y: hidden;
  max-height:0;
  min-height:0 !important;
  padding-top:0 !important;
  padding-bottom:0 !important;
  opacity: 0;
}

:root:not([customizing]) :hover > #nav-bar,
:root:not([customizing]) #nav-bar:focus-within {
  max-height: var(--nav-bar-height);
  opacity: 1;
}

:root:not([customizing]) #navigator-toolbox {
  max-height: calc(var(--tabbar-height) + var(--trigger-area-height));
  min-height: var(--tabbar-height);
  margin-bottom: calc(-1 * var(--trigger-area-height));
  transition: opacity 0.15s ease-in, max-height 0.15s linear;
}

:root:not([customizing]) #navigator-toolbox:hover,
:root:not([customizing]) #navigator-toolbox:focus-within {
  max-height: calc(var(--tabbar-height) + var(--nav-bar-height));
  margin-bottom: calc(0px - var(--nav-bar-height));
}

/* If the bookmarks bar is turned on, auto-hide that too */
:root:not([customizing]) #PersonalToolbar {
  max-height: 0 !important;
  min-height: 0.1px !important;
  opacity: 0;
}

:root:not([customizing]) :hover > #PersonalToolbar,
:root:not([customizing]) #navigator-toolbox:focus-within #PersonalToolbar {
  max-height: 4em !important;
  opacity: 1;
  transition: opacity 0.15s ease-in !important;
}

/* Lightweight Theme Support */
:root:-moz-lwtheme #nav-bar, 
:root:-moz-lwtheme #PersonalToolbar {
  background-color: var(--lwt-accent-color) !important;
  background-image: var(--lwt-header-image), var(--lwt-additional-images) !important;
  background-position: var(--lwt-background-alignment) !important;
  background-repeat: var(--lwt-background-tiling) !important;
}

#main-window[sizemode="normal"]:-moz-lwtheme #nav-bar {
    background-position-y: calc(-2px - var(--tabbar-height)) !important;
}
#main-window[sizemode="normal"]:-moz-lwtheme #PersonalToolbar {
    background-position-y: calc(-2px - var(--tabbar-height) - var(--nav-bar-height)) !important;
}

#main-window[sizemode="maximized"]:-moz-lwtheme #nav-bar {
    background-position-y: calc(-8px - var(--tabbar-height)) !important;
}
#main-window[sizemode="maximized"]:-moz-lwtheme #PersonalToolbar {
    background-position-y: calc(-8px - var(--tabbar-height) - var(--nav-bar-height)) !important;
}

#TabsToolbar .tabbrowser-tab .tab-line {
    display: none !important;
}