#navigator-toolbox {
  --zen-toolbox-max-width: 74px !important;
  background: none !important;
  border: none !important;
  box-shadow: none !important;
  height: 100vh !important;
  padding: 0 !important;
  min-width: calc(var(--zen-toolbox-max-width) + var(--zen-toolbox-padding) + var(--zen-element-separation)) !important;
}

#titlebar {
  border-radius: var(--zen-border-radius) !important;
  border: 1px solid var(--zen-colors-border) !important;
  background: var(--zen-colors-tertiary) !important;
  margin: calc( var(--zen-element-separation) * 2 );
  padding: var(--zen-element-separation);
}

/* Increase space around edge of browser window and tab bar */
@media (-moz-bool-pref: "uc.floatingtabbar.increase.spacing") {
  #main-window {
    --zen-element-separation: 10px !important;
  }
  #titlebar {
    padding: calc( var(--zen-element-separation) / 2 );
  }
}

/* Enable compact tab bar, similar to Smaller Compact Mode by n7itro */
@media (-moz-bool-pref: "uc.floatingtabbar.compact.enabled") {
  #titlebar {
    height: 75vh !important;
    margin-top: 12.5vh !important;
  }
}