/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/hide_tabs_scrollbuttons.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */

/* This should hide tabs scrollbuttons in a manner that preserves the ability to move tab strip when reordering tabs */

#tabbrowser-arrowscrollbox {
    --uc-compat-scrollbutton-margin: 1px; /* compatibility for non_floating_sharp_tabs.css */
    --uc-scrollbutton-up-background: linear-gradient(-90deg,transparent,var(--lwt-accent-color) 35%);
    --uc-scrollbutton-down-background: linear-gradient(90deg,transparent,var(--lwt-accent-color) 35%);
}

#tabbrowser-tabs:not([movingtab]) {
    --uc-scroll-visibility: hidden;
}
#tabbrowser-tabs[overflow] {
    --uc-scrollbox-base-margin: -31px;
    --uc-scrollbox-margin: calc(var(--uc-scrollbox-base-margin) + var(--tab-shadow-max-size));
}
:root[uidensity="compact"] #tabbrowser-tabs[overflow] {
    --uc-scrollbox-base-margin: -25px;
}
#tabbrowser-arrowscrollbox:not([scrolledtostart="true"]) {
    --uc-scrollbox-overflow-start-margin: -1px;
}
#scrollbutton-up ~ spacer {
    visibility: visible !important;
}
spacer[part="overflow-start-indicator"] {
    -moz-box-ordinal-group: 0; /* Fx < 112 compatibility */
    order: -1;
    margin-inline-start: var(--uc-scrollbox-overflow-start-margin,-0.5px) !important;
}
spacer[part="overflow-end-indicator"] {
    -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
    order: 2;
}

#scrollbutton-down[disabled="true"] > .toolbarbutton-icon,
#scrollbutton-up[disabled="true"] > .toolbarbutton-icon {
    opacity: 0.4;
} 
#scrollbutton-up,
#scrollbutton-down {
    position: relative;
    z-index: 1;
    visibility: var(--uc-scroll-visibility,visible);
    background-clip: border-box !important;
    background-origin: initial !important;
    background-repeat: no-repeat !important;
    opacity: 1 !important;
}
#scrollbutton-up {
    margin-inline-start: calc(0px - var(--tab-shadow-max-size,0px)) !important;
    background-image: var(--uc-scrollbutton-up-background);
}
#scrollbutton-down {
    margin-inline-end: calc(0px - var(--tab-shadow-max-size,0px)) !important;
    background-image: var(--uc-scrollbutton-down-background);
}
.scrollbox-clip {
    margin-inline: var(--uc-scrollbox-margin,0px);
}

/* Need to reset some things for other scrollboxes */
.menupopup-arrowscrollbox {
    --tab-shadow-max-size: 0;
}