@media (-moz-bool-pref: "zen.tabs.vertical") {
    
    /* Makes essentials transparent (when toggled) */
    :root:has(#theme-SuperPins[uc-essentials-color-scheme="transparent"]) {
        .tabbrowser-tab[zen-essential="true"]:not(:hover):not([selected="true"]) .tab-stack .tab-background {
            background-color: transparent !important;
        }
    }

    @media (-moz-bool-pref: "zen.view.sidebar-expanded") and (not (-moz-bool-pref: "zen.view.sidebar-expanded.on-hover")) {

        /* Set width of Essentials (Dropdown) */
        :root:has(#theme-SuperPins[uc-essentials-width="Thin"]) {
            --essentials-width: 50px;
        }

        :root:has(#theme-SuperPins[uc-essentials-width="Normal"]) {
            --essentials-width: 60px;
        }

        :root:has(#theme-SuperPins[uc-essentials-width="Wide"]) {
            --essentials-width: 70px;
        }

        :root:has(#theme-SuperPins[uc-essentials-width="Thin"],
            #theme-SuperPins[uc-essentials-width="Normal"],
            #theme-SuperPins[uc-essentials-width="Wide"]) {
            #zen-essentials-container {
                grid-template-columns: repeat(auto-fit,
                        minmax(var(--essentials-width), auto)) !important;
                min-width: var(--essentials-width) !important;
            }
        }

        /* Set margin between Essentials (Dropdown) */
        :root:has(#theme-SuperPins[uc-essentials-gap="Small"]) {
            --essentials-gap: 0px;
        }

        :root:has(#theme-SuperPins[uc-essentials-gap="Normal"]) {
            --essentials-gap: 2px;
        }

        :root:has(#theme-SuperPins[uc-essentials-gap="Big"]) {
            --essentials-gap: 5px;
        }

        :root:has(#theme-SuperPins[uc-essentials-gap="Small"],
            #theme-SuperPins[uc-essentials-gap="Normal"],
            #theme-SuperPins[uc-essentials-gap="Big"]) {
            #zen-essentials-container {
                gap: var(--essentials-gap) var(--essentials-gap) !important;
            }
        }
    }

    /* Enables legacy layout for pinned tabs (icon only in grid) */
    @media (-moz-bool-pref: "uc.pins.legacy-layout") {

        #vertical-pinned-tabs-container .tabbrowser-tab[pinned] .tab-close-button {
            display: none !important;
        }

        #vertical-pinned-tabs-container .tabbrowser-tab[pinned] .tab-reset-button {
            display: none !important;
        }

        #vertical-pinned-tabs-container .tabbrowser-tab[pinned] .tab-reset-pin-button {
            display: none !important;
        }

        #vertical-pinned-tabs-container .tabbrowser-tab[pinned] .tab-label-container {
            display: none !important;
        }

        /*disable icon shift when tab was renamed*/
        #navigator-toolbox[zen-sidebar-expanded="true"] {
            & #tabbrowser-tabs {
                & .tabbrowser-tab {
                    &[zen-pinned-changed="true"]:not([zen-essential])>.tab-stack>.tab-content>.tab-icon-stack {
                        left: unset !important;
                    }
                }
            }
        }

        /* Make pinned tabs auto-grow to span full width of row */
        @media (-moz-bool-pref: "uc.pins.auto-grow") {
            #vertical-pinned-tabs-container>.zen-workspace-tabs-section>.tabbrowser-tab[pinned] {
                width: auto !important;
                min-width: var(--tab-pinned-min-width-expanded) !important;
                flex: 1 1 auto !important;
            }

            #vertical-pinned-tabs-container>.zen-workspace-tabs-section {
                display: flex !important;
                flex-wrap: wrap !important;
                flex-direction: row !important;
            }
        }

        @media (not (-moz-bool-pref: "uc.pins.auto-grow")) {
            #vertical-pinned-tabs-container>.zen-workspace-tabs-section {
                grid-template-columns: repeat(auto-fit, minmax(var(--tab-pinned-min-width-expanded), auto)) !important;
                display: grid !important;
            }
        }

        /*The actual grid layout*/
        #vertical-pinned-tabs-container>.zen-workspace-tabs-section:has(> :nth-child(2)) {
            padding: 0 var(--zen-toolbox-padding) !important;
            overflow: hidden !important;
            padding-bottom: 17px !important;
            gap: 3px 3px !important;
        }

        #vertical-pinned-tabs-container>.zen-workspace-tabs-section>.tabbrowser-tab[pinned] {
            --toolbarbutton-inner-padding: 0;
        }

        #vertical-pinned-tabs-container > .zen-workspace-tabs-section > * {
            margin: 0 !important;
        }

        .vertical-pinned-tabs-container-separator {
            position: absolute !important;
            bottom: 7px !important;
            left: 50% !important;
            transform: translateX(-50%) !important;
            width: calc(100% - var(--zen-toolbox-padding) * 2) !important;
        }
    }

    /* Make Essentials look more box like */
    @media (-moz-bool-pref: "uc.essentials.box-like-corners") {
        .tabbrowser-tab[zen-essential="true"] .tab-stack .tab-background {
            border-radius: 5px !important;
        }
    }

    /* Make Essentials auto-grow to span full width of a row */
    @media (-moz-bool-pref: "uc.essentials.auto-grow") {
        .tabbrowser-tab[zen-essential="true"] {
            width: auto !important;
            min-width: var(--essentials-width) !important;
            flex: 1 1 0 !important;
            box-sizing: border-box !important;
        }

        #zen-essentials-container {
            display: flex !important;
            flex-wrap: wrap !important;
            flex-direction: row !important;
            box-sizing: border-box !important;
            min-width: 0 !important;
            height: auto !important;
            width: 100% !important;
        }

        #navigator-toolbox {
            min-width: min-content !important;
        }
    }

    /* Puts Essentials at the bottom */
    :has(#theme-SuperPins[uc-essentials-position="bottom"]) {
        #zen-essentials-container {
            order: 999 !important;
            margin-top: auto !important;
            padding-top: 5px !important;
            padding-bottom: 4px !important;
        }
    }

    /* Adds a little bg to the pinned tabs */
    @media (-moz-bool-pref: "uc.pins.bg") {
        @media (prefers-color-scheme: light) {
            :root {
                --pins-bg-percentage: 40%;
            }
        }

        @media (prefers-color-scheme: dark) {
            :root {
                --pins-bg-percentage: 7%;
            }
        }

        /* background color of pinned tabs in a normal state (not hovered/selected) */
        .tabbrowser-tab[pinned]:not([zen-essential="true"]) .tab-stack .tab-background {
            background-color: color-mix(in srgb, white var(--pins-bg-percentage), transparent) !important;
        }

        /* background color when hovering */
        .tabbrowser-tab[pinned]:not([zen-essential="true"]):hover .tab-stack .tab-background {
            background-color: color-mix(in srgb, white calc(var(--pins-bg-percentage) + 3%), transparent) !important;
        }

        /* background color when selected */
        .tabbrowser-tab[pinned]:not([zen-essential="true"])[selected="true"] .tab-stack .tab-background,
        .tabbrowser-tab[pinned]:not([zen-essential="true"])[multiselected="true"] .tab-stack .tab-background {
            background-color: color-mix(in srgb, white calc(var(--pins-bg-percentage) + 16%), transparent) !important;
        }

        /* background color when selected and hovering*/
        .tabbrowser-tab[pinned]:not([zen-essential="true"])[selected="true"]:hover .tab-stack .tab-background,
        .tabbrowser-tab[pinned]:not([zen-essential="true"])[multiselected="true"]:hover .tab-stack .tab-background {
            background-color: color-mix(in srgb, white calc(var(--pins-bg-percentage) + 18%), transparent) !important;
        }
    }

    /* Adds border to Pins/Essentials (when toggled) */
    :root:has(#theme-SuperPins[uc-superpins-border="essentials"]) {
        #zen-essentials-container .tabbrowser-tab[zen-essential="true"] .tab-stack .tab-background {
            border: 1px solid light-dark(color-mix(in srgb, var(--zen-colors-secondary) 80%, black),
                    color-mix(in srgb, var(--zen-colors-secondary) 80%, white)) !important;
        }
    }

    :root:has(#theme-SuperPins[uc-superpins-border="pins"]) {
        .tabbrowser-tab[pinned]:not([zen-essential="true"]) .tab-stack .tab-background {
            border: 1px solid light-dark(color-mix(in srgb, var(--zen-colors-secondary) 80%, black),
                    color-mix(in srgb, var(--zen-colors-secondary) 80%, white)) !important;
        }
    }

    :root:has(#theme-SuperPins[uc-superpins-border="both"]) {
        .tabbrowser-tab[pinned] .tab-stack .tab-background {
            border: 1px solid light-dark(color-mix(in srgb, var(--zen-colors-secondary) 80%, black),
                    color-mix(in srgb, var(--zen-colors-secondary) 80%, white)) !important;
        }
    }

    /* Let pinned tabs have the same selected styling as essentials */
    @media (-moz-bool-pref: "uc.pins.essentials-layout") {
        #vertical-pinned-tabs-container>.zen-workspace-tabs-section {
            grid-template-columns: repeat(auto-fit,
                    minmax(var(--essentials-width), auto)) !important;
            gap: var(--essentials-gap) var(--essentials-gap) !important;
        }

        #vertical-pinned-tabs-container>.zen-workspace-tabs-section>.tabbrowser-tab[pinned] {
            min-width: var(--essentials-width) !important;
        }
    }
    /* pins height */
  :root:has(#theme-SuperPins[uc-pinned-height="small"]) {
      #navigator-toolbox[zen-sidebar-expanded="true"]
          #vertical-pinned-tabs-container:has(tab:not([hidden]))
          .tabbrowser-tab {
          height: 40px !important;
      }
  }
  :root:has(#theme-SuperPins[uc-pinned-height="normal"]) {
      #navigator-toolbox[zen-sidebar-expanded="true"]
          #vertical-pinned-tabs-container:has(tab:not([hidden]))
          .tabbrowser-tab {
          height: 50px !important;
      }
  }
  :root:has(#theme-SuperPins[uc-pinned-height="large"]) {
      #navigator-toolbox[zen-sidebar-expanded="true"]
          #vertical-pinned-tabs-container:has(tab:not([hidden]))
          .tabbrowser-tab {
          height: 60px !important;
      }
  }
  /* favicon size */
  :root:has(#theme-SuperPins[uc-favicon-size="small"]) {
      .tab-throbber,
      .tab-icon-pending,
      .tab-icon-image,
      .tab-sharing-icon-overlay,
      .tab-icon-overlay {
          height: 16px !important;
          width: 16px !important;
      }
  }
  :root:has(#theme-SuperPins[uc-favicon-size="normal"]) {
      .tab-throbber,
      .tab-icon-pending,
      .tab-icon-image,
      .tab-sharing-icon-overlay,
      .tab-icon-overlay {
          height: 18px !important;
          width: 18px !important;
      }
  }
  :root:has(#theme-SuperPins[uc-favicon-size="large"]) {
      .tab-throbber,
      .tab-icon-pending,
      .tab-icon-image,
      .tab-sharing-icon-overlay,
      .tab-icon-overlay {
          height: 20px !important;
          width: 20px !important;
      }
  }
  /* workspace icons size */
  :root:has(#theme-SuperPins[uc-workspace-icon-size="x-small"]) {
      #zen-workspaces-button {
          font-size: x-small !important;
      }
  }
  :root:has(#theme-SuperPins[uc-workspace-icon-size="small"]) {
      #zen-workspaces-button {
          font-size: small !important;
      }
  }
  :root:has(#theme-SuperPins[uc-workspace-icon-size="medium"]) {
      #zen-workspaces-button {
          font-size: medium !important;
      }
  }
  :root:has(#theme-SuperPins[uc-workspace-icon-size="large"]) {
      #zen-workspaces-button {
          font-size: large !important;
      }
  }
  /* current workspace icons size */
  :root:has(#theme-SuperPins[uc-workspace-current-icon-size="small"]) {
      .zen-current-workspace-indicator .zen-current-workspace-indicator-icon {
          font-size: 12px !important;
      }
  }
  :root:has(#theme-SuperPins[uc-workspace-current-icon-size="normal"]) {
      .zen-current-workspace-indicator .zen-current-workspace-indicator-icon {
          font-size: 14.5px !important;
      }
  }
  :root:has(#theme-SuperPins[uc-workspace-current-icon-size="large"]) {
      .zen-current-workspace-indicator .zen-current-workspace-indicator-icon {
          font-size: 16px !important;
      }
  }
    
  /* Ensure that the browser uses SuperPins dim rather than the built-in dim-pending. */
  .tab-icon-image[pending="true"], .tabbrowser-tab[pending="true"] .tab-text {
    opacity: 1 !important;
  }

  /* If dim-type is set to icons. */
  :root:has(#theme-SuperPins[uc-tabs-dim-type="icons"]) {
    .tab-icon-image[pending="true"] {
      opacity: 0.5 !important;
    }
  }

  /* If dim-type is set to text. */
  :root:has(#theme-SuperPins[uc-tabs-dim-type="text"]) {
    .tabbrowser-tab[pending="true"] .tab-text {
      opacity: 0.5 !important;
    }
  }

  /* If dim-type is set to icon + text. */
  :root:has(#theme-SuperPins[uc-tabs-dim-type="both"]) {
    .tab-icon-image[pending="true"], .tabbrowser-tab[pending="true"] .tab-text {
      opacity: 0.5 !important;
    }
  } 
}