/*** Proton Tabs Tweaks ***/
/* Adjust tab corner shape, optionally remove space below tabs */
#tabbrowser-tabs {
    --user-tab-rounding: 0px;
}
.tab-background {
    border-radius: var(--user-tab-rounding) var(--user-tab-rounding) 0px 0px !important;
    margin-block: 1px 0 !important;
}
/* 1/12/2022 Tone down the Fx96 tab border with add-on themes */
.tab-background:is([selected], [multiselected]):-moz-lwtheme {
    border-color: rgba(0, 0, 0, 0.5) !important;
    border-bottom-color: transparent !important;
}
[brighttext="true"] .tab-background:is([selected], [multiselected]):-moz-lwtheme {
    border-color: rgba(255, 255, 255, 0.5) !important;
    border-bottom-color: transparent !important;
}
#scrollbutton-up, #scrollbutton-down { /* 6/10/2021 */
    border-top-width: 1px !important;
    border-bottom-width: 0 !important;
}
/* Container color bar visibility */
.tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-context-line {
    margin: 0px max(calc(var(--user-tab-rounding) - 3px), 0px) !important;
}
/* Override Normal Density height to Compact Density height only for tabs */
#TabsToolbar, #tabbrowser-tabs {
    --tab-min-height: 31px !important;
}
    /* Tweak for covering a line at the bottom of the active tab on some themes 8/11/2021 */
#main-window[sizemode="normal"] #toolbar-menubar[autohide="true"] + #TabsToolbar, 
#main-window[sizemode="normal"] #toolbar-menubar[autohide="true"] + #TabsToolbar #tabbrowser-tabs {
    --tab-min-height: 32px !important;
}
#scrollbutton-up,
#scrollbutton-down {
    border-top-width: 0 !important;
    border-bottom-width: 0 !important;
}
    /* [Connected Tabs] Set a max height based on min-height plus margin-block: 1px 0 */
#TabsToolbar, #TabsToolbar > hbox, #TabsToolbar-customization-target, #tabbrowser-arrowscrollbox  {
    max-height: calc(var(--tab-min-height) + 1px) !important;
}
    /* [Connected Tabs] Adjust padding around icons on buttons to avoid crushed images */
#TabsToolbar-customization-target toolbarbutton > .toolbarbutton-icon, 
#TabsToolbar-customization-target .toolbarbutton-text, 
#TabsToolbar-customization-target .toolbarbutton-badge-stack,
#scrollbutton-up,#scrollbutton-down {
    padding-top: 7px !important;
    padding-bottom: 6px !important;
}
/* Inactive tabs: Separator line style */
.tabbrowser-tab:not([selected=true]):not([multiselected=true]):not([beforeselected-visible="true"]) .tab-background {
    border-right: 1px solid var(--lwt-background-tab-separator-color, rgba(0, 0, 0, .20)) !important;
}
/* For dark backgrounds */
[brighttext="true"] .tabbrowser-tab:not([selected=true]):not([multiselected=true]):not([beforeselected-visible="true"]) .tab-background {
    border-right: 1px solid var(--lwt-background-tab-separator-color, var(--lwt-selected-tab-background-color, rgba(255, 255, 255, .20))) !important;
}
.tabbrowser-tab:not([selected=true]):not([multiselected=true]) .tab-background {
    border-radius: 0 !important;
}
/* Remove padding between tabs */
.tabbrowser-tab {
    padding-left: 0 !important;
    padding-right: 0 !important;
}
/* Move container color bar to bottom of tab */
.tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-context-line {
    margin-top: calc(var(--tab-min-height) - 5px) !important;
}
/* Emulate blue tab line from Photon 57-88 UI */
/* Set size and position of the bar relative to background */
.tab-background::before {
  content: "";
  display: block;
  height: 3px;
  margin: -1px var(--user-tab-rounding) 0;
}
/* Set color for active tab */
.tabbrowser-tab[selected] .tab-background::before {
  background-color: #0a84ff;
}
/* Set color for other selected tabs */
.tabbrowser-tab[multiselected]:not([selected]) .tab-background::before {
  background-color: color-mix(in srgb, #0a84ff 66%, transparent);
}
/* Set color for hovering on non-active/non-selected tabs */
.tabbrowser-tab:not([selected], [multiselected]):hover .tab-background::before {
  background-color: color-mix(in srgb, currentColor 33%, transparent);
  transform: none;
}
/* [Optional] Animation when hovering non-active/non-selected tabs */
/*
.tabbrowser-tab:not([selected], [multiselected]) .tab-background::before {
  transform: scaleX(.8);
  transition: transform 100ms linear;
}
*/
/* Adjust margin on blue tab line for squared background tabs */
.tabbrowser-tab:not([selected], [multiselected]) .tab-background::before {
  margin: -1px 0 0 !important;
}
/*** Audio Playing / Mute Button side-by-side when sound is playing ***/
#TabsToolbar {
    --user-mute-button-height: 20px;  /* default size is 12px, site icon is 16px */
}
/* Move the mute/unmute button to the right and enlarge it */
.tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]) {
    width: var(--user-mute-button-height) !important;
    height: var(--user-mute-button-height) !important;
    margin-left: calc(var(--user-mute-button-height) / 2 + 2px) !important; /* pushes icon to the right */
    margin-right: 2px !important; /* closes up some space before the text */
    padding: 0 !important; /* allows icon to expand to full size */
}
/* Move the site icon to the left a bit and adjust position */
.tab-icon-stack:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]) > :not(.tab-icon-overlay) {
    margin-left: -4px !important; /* pushes icon to the left */
    margin-top: calc((var(--user-mute-button-height) - 16px) / 2) !important;  /* keep site icon reasonably positioned */
}
/* Override the rules for hover/not hover visibility */
   /* for mute button */
.tabbrowser-tab:not(:hover) .tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]), 
   /* for site icon */
.tabbrowser-tab:hover .tab-icon-stack:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]) > :not(.tab-icon-overlay), 
   /* for site icon with Compact density */
:root[uidensity="compact"] .tab-icon-stack:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]) > :not(.tab-icon-overlay) {
    opacity: 1 !important; /* overrides full transparency with full opacity */
}
/* Color the icon on hover for confirmation or avoidance */
.tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]):hover {
    fill: green !important;
}
[lwthemetextcolor="bright"] .tab-icon-overlay:not([pinned], [sharing], [crashed]):is([soundplaying], [muted]):hover {
    fill: lightgreen !important; /* for dark themes */
}
/* Tweaked Audio playing/Mute button rules for pinned tabs */
.tab-icon-overlay:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]) {
    width: var(--user-mute-button-height) !important;
    height: var(--user-mute-button-height) !important;
    margin-left: 2px !important; /* allow some overlap to reduce expanded width */
    margin-right: -2px !important; /* reduce empty space on the right */
    padding: 0 !important; /* allows icon to expand to full size */
    top: 0 !important; /* align button with site icon */
}
.tab-icon-stack:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]) > :not(.tab-icon-overlay) {
    margin-left: -6px !important; /* reduce empty space on the left */
    margin-top: calc((var(--user-mute-button-height) - 16px) / 2) !important;  /* keep site icon reasonably positioned */
}
.tabbrowser-tab:not(:hover) .tab-icon-overlay:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]), 
   /* for site icon */
.tabbrowser-tab:hover .tab-icon-stack:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]) > :not(.tab-icon-overlay), 
   /* for site icon with Compact density */
:root[uidensity="compact"] .tab-icon-stack:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]) > :not(.tab-icon-overlay) {
    opacity: 1 !important; /* overrides full transparency with full opacity */
}
.tab-icon-overlay:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]):hover {
    fill: green !important;
}
[lwthemetextcolor="bright"] .tab-icon-overlay:not([crashed]):is([pinned], [sharing]):is([soundplaying], [muted]):hover {
    fill: lightgreen !important; /* for dark themes */
}
/* Tweak Options as of 1/12/2022; Generated Mon Jan 17 2022 00:02:20 GMT+0300 (Moscow Standard Time) */