@media (-moz-bool-pref: "theme.no_gaps.split.gaps") and (-moz-bool-pref: "theme.no_gaps.fixes.center_split_view") {
  #zen-appcontent-wrapper:has(
      > #zen-tabbox-wrapper
        > #tabbrowser-tabbox
        > #tabbrowser-tabpanels[zen-split-view="true"]
    )
    > #zen-tabbox-wrapper {
    margin-top: 1px !important;
    margin-bottom: 5px !important;
    margin-right: 7px !important;

    :root[zen-compact-mode="true"] & {
      @media (-moz-bool-pref: "zen.view.compact.hide-toolbar") {
        margin-top: -3px !important;
      }
      @media (-moz-bool-pref: "zen.view.compact.hide-tabbar") {
        margin-left: -3px !important;
      }
    }
  }
}

:root[zen-single-toolbar="true"]:not([customizing]) {
  @media (-moz-bool-pref: "zen.view.hide-window-controls") {
    @media (-moz-bool-pref: "theme.no_gaps.single_toolbar.disable_navbar") {
      @media (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.disable_navbar") {
        #zen-appcontent-navbar-container {
          display: none !important;
        }
      }

      @media not (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.disable_navbar") {
        #zen-appcontent-wrapper:has(
            > #zen-tabbox-wrapper
              > #tabbrowser-tabbox
              > #tabbrowser-tabpanels:not([zen-split-view="true"])
          )
          > #zen-appcontent-navbar-container {
          display: none !important;
        }

        @media (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.hide_navbar") {
          #zen-appcontent-wrapper:has(
              > #zen-tabbox-wrapper
                > #tabbrowser-tabbox
                > #tabbrowser-tabpanels[zen-split-view="true"]
            ) {
            height: calc(100% + var(--zen-element-separation));
            transition: height 0.2s ease;

            & > #zen-tabbox-wrapper {
              top: calc(-1 * var(--zen-element-separation));
              z-index: -1 !important;
              transition: top 0.2s ease;
            }

            &:not(
                :has(
                    > #zen-appcontent-navbar-container:not(
                        [zen-has-hover="true"],
                        [has-popup-menu],
                        :focus-within
                      )
                  )
              )
              > #zen-tabbox-wrapper {
              top: 0;
            }
          }
        }
      }
    }

    @media not (-moz-bool-pref: "theme.no_gaps.single_toolbar.disable_navbar") {
      @media (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.disable_navbar") {
        #zen-appcontent-wrapper:has(
            > #zen-tabbox-wrapper
              > #tabbrowser-tabbox
              > #tabbrowser-tabpanels[zen-split-view="true"]
          )
          > #zen-appcontent-navbar-container {
          display: none !important;
        }

        @media (-moz-bool-pref: "theme.no_gaps.single_toolbar.hide_navbar") {
          #zen-appcontent-wrapper:has(
              > #zen-tabbox-wrapper
                > #tabbrowser-tabbox
                > #tabbrowser-tabpanels:not([zen-split-view="true"])
            ) {
            height: calc(100% + var(--zen-element-separation));
            transition: height 0.2s ease;

            & > #zen-tabbox-wrapper {
              top: calc(-1 * var(--zen-element-separation));
              z-index: -1 !important;
              transition: top 0.2s ease;
            }

            &:not(
                :has(
                    > #zen-appcontent-navbar-container:not(
                        [zen-has-hover="true"],
                        [has-popup-menu],
                        :focus-within
                      )
                  )
              )
              > #zen-tabbox-wrapper {
              top: 0;
            }
          }
        }
      }

      @media not (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.disable_navbar") {
        @media (-moz-bool-pref: "theme.no_gaps.single_toolbar.hide_navbar") {
          @media (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.hide_navbar") {
            #zen-appcontent-wrapper {
              height: calc(100% + var(--zen-element-separation));
              transition: height 0.2s ease;

              & > #zen-tabbox-wrapper {
                top: calc(-1 * var(--zen-element-separation));
                z-index: -1 !important;
                transition: top 0.2s ease;
              }

              &:not(
                  :has(
                      > #zen-appcontent-navbar-container:not(
                          [zen-has-hover="true"],
                          [has-popup-menu],
                          :focus-within
                        )
                    )
                )
                > #zen-tabbox-wrapper {
                top: 0;
              }
            }
          }
          @media not (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.hide_navbar") {
            #zen-appcontent-wrapper:has(
                > #zen-tabbox-wrapper
                  > #tabbrowser-tabbox
                  > #tabbrowser-tabpanels:not([zen-split-view="true"])
              ) {
              height: calc(100% + var(--zen-element-separation));
              transition: height 0.2s ease;

              & > #zen-tabbox-wrapper {
                top: calc(-1 * var(--zen-element-separation));
                z-index: -1 !important;
                transition: top 0.2s ease;
              }

              &:not(
                  :has(
                      > #zen-appcontent-navbar-container:not(
                          [zen-has-hover="true"],
                          [has-popup-menu],
                          :focus-within
                        )
                    )
                )
                > #zen-tabbox-wrapper {
                top: 0;
              }
            }
          }
        }

        @media not (-moz-bool-pref: "theme.no_gaps.single_toolbar.hide_navbar") {
          @media (-moz-bool-pref: "theme.no_gaps.split.single_toolbar.hide_navbar") {
            #zen-appcontent-wrapper:has(
                > #zen-tabbox-wrapper
                  > #tabbrowser-tabbox
                  > #tabbrowser-tabpanels[zen-split-view="true"]
              ) {
              height: calc(100% + var(--zen-element-separation));
              transition: height 0.2s ease;

              & > #zen-tabbox-wrapper {
                top: calc(-1 * var(--zen-element-separation));
                z-index: -1 !important;
                transition: top 0.2s ease;
              }
              &:not(
                  :has(
                      > #zen-appcontent-navbar-container:not(
                          [zen-has-hover="true"],
                          [has-popup-menu],
                          :focus-within
                        )
                    )
                )
                > #zen-tabbox-wrapper {
                top: 0;
              }
            }
          }
        }
      }
    }
  }
}

@media not (-moz-bool-pref: "theme.no_gaps.split.outline") {
  hbox.browserSidebarContainer {
    outline: none !important;
  }
}

@media not (-moz-bool-pref: "theme.no_gaps.shadow") {
  @media not (-moz-bool-pref: "theme.no_gaps.split.shadow") {
    hbox.browserSidebarContainer {
      box-shadow: none !important;
    }
  }

  @media (-moz-bool-pref: "theme.no_gaps.split.shadow") {
    hbox.browserSidebarContainer:not([zen-split="true"]) {
      box-shadow: none !important;
    }
  }
}

@media (-moz-bool-pref: "theme.no_gaps.shadow") {
  @media not (-moz-bool-pref: "theme.no_gaps.split.shadow") {
    hbox.browserSidebarContainer[zen-split="true"] {
      box-shadow: none !important;
    }
  }
}

@media not (-moz-bool-pref: "theme.no_gaps.rounded_corners") {
  @media not (-moz-bool-pref: "theme.no_gaps.split.rounded_corners") {
    #tabbrowser-tabpanels .browserSidebarContainer {
      border-radius: 0 !important;
    }
  }

  @media (-moz-bool-pref: "theme.no_gaps.split.rounded_corners") {
    #tabbrowser-tabpanels:not([zen-split-view="true"]) .browserSidebarContainer {
      border-radius: 0 !important;
    }
  }
}

@media (-moz-bool-pref: "theme.no_gaps.rounded_corners") {
  @media not (-moz-bool-pref: "theme.no_gaps.split.rounded_corners") {
    #tabbrowser-tabpanels[zen-split-view="true"] .browserSidebarContainer {
      border-radius: 0 !important;
    }
  }
}

@media not (-moz-bool-pref: "theme.no_gaps.gaps") {
  hbox.browserSidebarContainer:not([zen-split="true"]) {
    margin: 0 !important;
  }

  @media not (-moz-bool-pref: "theme.no_gaps.split.gaps") {
    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;
    }

    @media (-moz-bool-pref: "theme.no_gaps.split.outline") {
      hbox.browserSidebarContainer[zen-split="true"] {
        margin: 1px !important;
      }
    }
  }

  @media (-moz-bool-pref: "theme.no_gaps.split.gaps") {
    #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;
      }
    }
  }
}

@media (-moz-bool-pref: "theme.no_gaps.gaps") {
  @media not (-moz-bool-pref: "theme.no_gaps.split.gaps") {
    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;
    }

    @media (-moz-bool-pref: "theme.no_gaps.split.outline") {
      hbox.browserSidebarContainer[zen-split="true"] {
        margin: 1px !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;
      }
    }
  }
}