body:not(:has([mod-no_gaps-outline^="_"])) {
  hbox.browserSidebarContainer {
    outline: none !important;
  }
}

body:not(:has([mod-no_gaps-shadow^="_"])) {
  hbox.browserSidebarContainer {
    box-shadow: none !important;
  }
}

body:has([mod-no_gaps-shadow="_unsplit"]) {
  hbox.browserSidebarContainer:not([zen-split="true"]) {
    box-shadow: none !important;
  }
}

body:has([mod-no_gaps-shadow="_split"]) {
  hbox.browserSidebarContainer[zen-split="true"] {
    box-shadow: none !important;
  }
}

body:not(:has([mod-no_gaps-rounded_corners^="_"])) {
  #tabbrowser-tabpanels .browserSidebarContainer {
    border-radius: 0 !important;
  }
}

body:has([mod-no_gaps-rounded_corners="_unsplit"]) {
  #tabbrowser-tabpanels:not([zen-split-view="true"]) .browserSidebarContainer {
    border-radius: 0 !important;
  }
}

body:has([mod-no_gaps-rounded_corners="_split"]) {
  #tabbrowser-tabpanels[zen-split-view="true"] .browserSidebarContainer {
    border-radius: 0 !important;
  }
}

body:not(:has([mod-no_gaps-gaps^="_"])) {
  hbox.browserSidebarContainer:not([zen-split="true"]) {
    margin: 0 !important;
  }

&:has([mod-no_gaps-outline="_never"]) {
    hbox.browserSidebarContainer[zen-split="true"] {
      margin: 1px !important;
    }
  }
  
  tabbox#tabbrowser-tabbox {
    --zen-split-row-gap: 0 !important;
    --zen-split-column-gap: 0 !important;
  }

div.zen-split-view-splitter[orient="vertical"] {
    margin-left: calc(-1 * var(--zen-element-separation) + 1px) !important;
  }

div.zen-split-view-splitter[orient="horizontal"] {
    height: calc(var(--zen-element-separation) * 2 - 3px) !important;
    margin-top: calc(-1 * var(--zen-element-separation) + 1px) !important;
  }

#zen-appcontent-wrapper {
    margin: 0 !important;
  }
  #zen-tabbox-wrapper {
    margin: 0 !important;
  }
}

body:has([mod-no_gaps-gaps="_unsplit"]) {
  hbox.browserSidebarContainer:not([zen-split="true"]) {
    margin: 0 !important;
  }

#zen-appcontent-wrapper:not(:has(
    > #zen-tabbox-wrapper
    > #tabbrowser-tabbox
    > #tabbrowser-tabpanels[zen-split-view="true"]
  )) {

margin: 0 !important;

& > #zen-tabbox-wrapper {
      margin: 0 !important;
    }
  }
}

body:has([mod-no_gaps-gaps="_split"]) {

&:has([mod-no_gaps-outline="_never"]) {
    hbox.browserSidebarContainer[zen-split="true"] {
      margin: 1px !important;
    }
  }
  
  tabbox#tabbrowser-tabbox {
    --zen-split-row-gap: 0 !important;
    --zen-split-column-gap: 0 !important;
  }

#zen-appcontent-wrapper:has(
    > #zen-tabbox-wrapper
    > #tabbrowser-tabbox
    > #tabbrowser-tabpanels[zen-split-view="true"]
  ) {
    margin: 0 !important;

& > #zen-tabbox-wrapper {
      margin: 0 !important;
    }
  }

div.zen-split-view-splitter[orient="vertical"] {
    margin-left: calc(-1 * var(--zen-element-separation) + 1px) !important;
  }

div.zen-split-view-splitter[orient="horizontal"] {
    height: calc(var(--zen-element-separation) * 2 - 3px) !important;
    margin-top: calc(-1 * var(--zen-element-separation) + 1px) !important;
  }    
}
  
:root[zen-single-toolbar="true"]:not([customizing]) {
    @media -moz-pref("zen.view.hide-window-controls") {
    
        /* Always remove top bar */
        body:has([mod-no_gaps-remove_navbar="_always"]) {
          #zen-appcontent-navbar-wrapper {
            display: none !important;
          }
        }
        
        /* Only in unsplit view */
        body:has([mod-no_gaps-remove_navbar="_unsplit"])
            :not(:has(#tabbrowser-tabpanels[zen-split-view="true"])) {
          #zen-appcontent-navbar-wrapper {
            display: none !important;
          }
        }
        
        /* Only in split view */
        body:has([mod-no_gaps-remove_navbar="_split"])
            :has(#tabbrowser-tabpanels[zen-split-view="true"]) {
          #zen-appcontent-navbar-wrapper {
            display: none !important;
          }
        }
        
        body:not(:has([mod-no_gaps-remove_navbar^="_"])) {
          &:not(:has([mod-no_gaps-hide_navbar^="_"])) {
            #zen-appcontent-wrapper {
            
              height: calc(100% + var(--zen-element-separation));
        
              & > #zen-tabbox-wrapper {
                top: calc(-1 * var(--zen-element-separation));
                z-index: -1 !important;
                transition: top 0.15s 0.2s ease;
              }
        
              &:not(:has(
                > #zen-appcontent-navbar-wrapper:not(
                [zen-has-hover="true"],
                [has-popup-menu],
                :focus-within)
              )) > #zen-tabbox-wrapper {
                top: 0;
              }
              
            }
          }
        }
    }
}