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firefox-tweaks/autohide_tabstoolbar_v2.css

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CSS

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/autohide_tabstoolbar_v2.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */
/* Requires Firefox 133 */
:root{
--uc-tabs-hide-animation-duration: 48ms;
--uc-tabs-hide-animation-delay: 200ms;
}
@media (-moz-bool-pref: "sidebar.verticalTabs"){
#sidebar-main:has(>[expanded]){
overflow: visible !important;
max-width: var(--tab-collapsed-width);
z-index: var(--browser-area-z-index-toolbox-while-animating);
transition: z-index 0s linear var(--uc-tabs-hide-duration);
}
#sidebar-main >[expanded]{
--tab-pinned-horizontal-count: 5; /* This needs to match whatever is used in sidebar-main.css - currently 5 */
background: inherit;
overflow: hidden;
min-width: var(--tab-collapsed-width);
transition: min-width var(--uc-tabs-hide-animation-duration) ease-out var(--uc-tabs-hide-animation-delay);
border-inline: 0.01px solid var(--chrome-content-separator-color);
border-inline-width: 0 0.01px;
&[positionend]{
transition-property: min-width, transform;
border-inline-width: 0.01px 0;
}
}
#sidebar-main >[expanded]:hover{
min-width: calc(var(--tab-pinned-horizontal-count) * var(--tab-pinned-min-width-expanded) + 2 * var(--tab-pinned-container-margin-inline-expanded) + 1px);
transition-delay: 0ms !important;
&[positionend]{
transform: translateX(calc(var(--tab-collapsed-width) - 100%));
}
}
}
@media not (-moz-bool-pref: "sidebar.verticalTabs"){
:root:not([customizing],[chromehidden~="menubar"]) #navigator-toolbox:hover,
:root:not([customizing],[chromehidden~="menubar"]) #TabsToolbar{
margin-bottom: calc(0px - 2 * var(--tab-block-margin) - var(--tab-min-height));
}
#navigator-toolbox{
transition: margin-bottom var(--uc-tabs-hide-animation-duration) ease-out var(--uc-tabs-hide-animation-delay) !important;
--browser-area-z-index-toolbox: 3;
}
#TabsToolbar:not([customizing]){
visibility: hidden;
transition: visibility 0ms linear var(--uc-tabs-hide-animation-delay),
margin-bottom var(--uc-tabs-hide-animation-duration) ease-out var(--uc-tabs-hide-animation-delay) !important;
}
#navigator-toolbox:hover{
transition-delay: 0s !important;
> #TabsToolbar{
visibility: visible;
margin-bottom: 0px;
transition-delay: 18ms, 0ms !important;
}
}
@media (-moz-bool-pref: "userchrome.autohidetabs.show-while-inactive.enabled"){
#navigator-toolbox:-moz-window-inactive{
margin-bottom: calc(0px - 2 * var(--tab-block-margin) - var(--tab-min-height));
> #TabsToolbar{
visibility: visible;
margin-bottom: 0px;
}
}
}
/* These rules make sure that height of tabs toolbar doesn't exceed tab-min-height */
#tabbrowser-tabs:not([secondarytext-unsupported]) .tab-label-container{
max-height: var(--tab-min-height);
}
.tab-label{ line-height: 20px !important; }
:root[uidensity="compact"] .tab-label{ line-height: 18px !important; }
}