desktop/src/zen/split-view/zen-split-view.css

/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

/** Zen Decks - ONLY USED FOR SPLIT VIEWS, DO NOT USE THIS CLASS FOR ANY OTHER PURPOSE **/

%include zen-split-group.inc.css

#tabbrowser-tabpanels[zen-split-view="true"] {
  display: flex;
  flex-direction: row;
  margin-top: calc(var(--zen-split-column-gap) * -1);
}

#tabbrowser-tabpanels[zen-split-view="true"] > *:not([zen-split="true"]) {
  flex: 0;
  margin: 0;
}

#zen-splitview-dropzone {
  border-radius: var(--zen-native-inner-radius);
  transition: inset ease-out 0.08s;
  display: none;
  background-color: color-mix(in srgb, var(--zen-colors-secondary) 30%, transparent 70%);
}
#zen-splitview-dropzone[enabled="true"] {
  display: initial;
}

#tabbrowser-tabpanels[zen-split-view="true"] > [zen-split="true"],
#zen-splitview-dropzone {
  flex: 1;
  overflow: hidden;

  & .dialogStack {
    /* Fix for issue https://github.com/zen-browser/desktop/issues/7564 */
    position: absolute;
  }

  :root[inDOMFullscreen="true"] & {
    &:not(.deck-selected) {
      -moz-subtree-hidden-only-visually: 1 !important;
    }

    &.deck-selected {
      inset: 0 !important;
    }
  }
}

.browserSidebarContainer[is-zen-split="true"],
#zen-splitview-dropzone {
  position: absolute !important;

  margin: var(--zen-split-column-gap) var(--zen-split-row-gap);
  margin-bottom: 0;
  margin-left: 0;

  &.browserSidebarContainer:not([zen-split="true"]) {
    margin-top: 0;
    visibility: hidden;
  }
}

#zen-splitview-dropzone {
  margin-top: 0 !important;
}

#tabbrowser-tabpanels[zen-split-view="true"]:not(.zen-split-view-no-transition):not([zen-split-resizing]) > [zen-split="true"] {
  --zen-active-split-outline-color: light-dark(hsl(from var(--zen-primary-color) h s calc(l - 20)), var(--button-background-color-primary));

  transition: inset 0.09s ease-out !important;
  & browser {
    transition: opacity 0.2s ease-out !important;
  }
}

:root:not([inDOMFullscreen="true"]) #tabbrowser-tabpanels[zen-split-view="true"] .browserSidebarContainer.deck-selected {
  &:not(.zen-glance-overlay) {
    outline: 2px solid var(--zen-active-split-outline-color) !important;
  }

  &.zen-glance-overlay {
    flex: 1;
    margin-top: calc(var(--zen-element-separation) / 2);
    z-index: 1;
  }
}

#tabbrowser-tabbox {
  --zen-split-row-gap: var(--zen-element-separation);
  --zen-split-column-gap: calc(var(--zen-element-separation) + 1px);
}

#tabbrowser-tabbox[zen-split-view="true"] {
  :root[zen-no-padding="true"] & {
    --zen-element-separation: 8px;
  }
  margin-right: calc(-1 * var(--zen-split-column-gap));
}

:root:not([customizing]) #zen-splitview-overlay {
  margin-top: calc(var(--zen-split-column-gap) * -1);
}

#tabbrowser-tabpanels[zen-split-view] {
  .zen-split-view-splitter {
    display: inherit;
  }
}

#zen-splitview-overlay-wrapper {
  position: absolute;
  pointer-events: none;
  padding: inherit;
  inset: 0;
}

#zen-splitview-overlay {
  position: relative;
  flex: 1;
  z-index: 2;
}

.zen-split-view-splitter {
  visibility: inherit;
  -moz-subtree-hidden-only-visually: 0;
  position: absolute;
  pointer-events: all;
}

.zen-split-view-splitter[orient="horizontal"] {
  height: var(--zen-split-column-gap);
  cursor: ns-resize;
}

.zen-view-splitter-header-container {
  position: absolute;
  top: calc(var(--zen-split-column-gap) / -2);
  left: 50%;
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 100;
  transform: translateX(-50%);
  pointer-events: none;
}

.zen-view-splitter-header {
  display: flex;
  align-items: center;
  position: fixed;
  padding: 0.4rem 0.6rem 0.2rem 0.6rem;
  border-radius: 6px;
  background-color: var(--zen-active-split-outline-color);
  box-shadow: 0 0 0 1px var(--button-primary-border-color);
  gap: 0.8rem;
  transform: translateX(-50%);
  box-shadow: 0 0 5px 1px rgba(0, 0, 0, 0.1);
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

:root:not([inDOMFullscreen="true"]) .browserSidebarContainer:hover .zen-view-splitter-header-container,
.zen-view-splitter-header-container:hover {
  pointer-events: all;
  opacity: 1;
  transition-delay: 0.1s;
}

.zen-view-splitter-header-container toolbarbutton {
  display: flex;
  -moz-context-properties: fill, fill-opacity;
  border-radius: var(--tab-border-radius);
  color: contrast-color(var(--zen-active-split-outline-color));
  opacity: 0.8;
  fill: currentColor;
  width: 16px;
  height: 16px;
  cursor: pointer;
  appearance: none;
  outline: none;
  border-top-left-radius: 0;
  border-top-right-radius: 0;

  & image {
    width: 14px;
    height: 14px;
  }

  &.zen-tab-unsplit-button image {
    height: 10px;
    width: 10px;
  }

  &.zen-tab-rearrange-button {
    cursor: move;

    & image {
      transform: rotate(90deg);
    }
  }
}

#zen-split-view-fake-browser {
  position: absolute;
  height: 100%;
  border: 2px solid var(--zen-primary-color);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--zen-native-inner-radius);
  box-shadow: var(--zen-big-shadow);
  overflow: hidden;
  will-change: width, margin-left;

  &[side="top"],
  &[side="bottom"] {
    width: 100%;

    &[has-split-view="true"] {
      width: calc(100% - var(--zen-element-separation));
    }
  }

  &[side="right"] {
    right: 0;

    &[has-split-view="true"] {
      right: var(--zen-element-separation);
    }
  }

  &[side="bottom"] {
    bottom: 0;
  }
}

#zen-split-view-drag-image {
  width: 200px;
  height: 250px;
  border-radius: 16px;
  background: black;
  justify-content: center;
  align-items: center;
  padding: 20px;
  gap: 20px;
  position: relative;

  & image {
    width: 24px;
    height: 24px;
  }

  & label {
    color: white;
    font-size: 14px;
    font-weight: bold;
    text-align: center;
  }
}

zen-split-fake-tab {
  border-radius: var(--border-radius-medium);
  background-color: color-mix(in srgb, var(--button-background-color-primary), transparent 40%);
  margin: var(--tab-block-margin);
  flex: 1;
}