index.scss

@layer stream-new, stream-new-plugins, stream-overrides, stream-app-overrides;

// Geist font is preloaded in index.html to avoid layout shift on mount.
//@import url('https://fonts.googleapis.com/css2?family=Geist:wght@100..900&display=swap');

// v3 CSS import
@import url('stream-chat-react/dist/css/index.css') layer(stream-new);
@import url('./AppSettings/AppSettings.scss') layer(stream-app-overrides);
@import url('./CustomMessageActions/CustomMessageActions.scss')
layer(stream-app-overrides);
@import url('./SystemNotification/SystemNotification.scss') layer(stream-app-overrides);
@import url('./AccessibilityNavigation/ReturnToSkipNavigation.scss')
layer(stream-app-overrides);
@import url('stream-chat-react/dist/css/emoji-picker.css') layer(stream-new-plugins);

:root {
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
}

#root {
  display: flex;
  flex-direction: column;
  /* Fallback for browsers without dynamic viewport units */
  height: 100vh;
  /* Match the visible viewport on mobile browser UI changes */
  height: 100dvh;
  min-height: 0;
}

@layer stream-overrides {
  .app-chat-layout {
    --app-left-panel-width: 360px;
    --app-thread-panel-width: 360px;

    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-height: 0;
    height: 100%;
    width: 100%;
    background: var(--str-chat__background-color);
  }

  /* Fills viewport minus in-flow `.str-chat__system-notification` when present */
  .app-chat-layout__body {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-height: 0;
    min-width: 0;
  }

  /* ChatView root is the only in-DOM child of __body (sync components return null) */
  .app-chat-layout__body > .str-chat__chat-view {
    flex: 1 1 auto;
    min-height: 0;
  }

  .app-chat-layout .str-chat {
    --str-chat__channel-list-width: var(--app-left-panel-width);
    --str-chat__thread-list-width: var(--app-left-panel-width);
  }

  body.app-chat-resizing-sidebar[data-app-sidebar-resize-state='expanded']
    .str-chat__channel-list,
  body.app-chat-resizing-sidebar[data-app-sidebar-resize-state='expanded']
    .str-chat__thread-list-container,
  body.app-chat-resizing-thread .app-chat-resize-handle--thread,
  body.app-chat-resizing-thread .app-chat-thread-panel,
  body.app-chat-resizing-thread
    .str-chat__chat-view__channels
    .str-chat__container
    > .str-chat__dropzone-root--thread,
  body.app-chat-resizing-thread
    .str-chat__chat-view__channels
    .str-chat__container
    > .str-chat__thread-container,
  body.app-chat-resizing-thread
    .str-chat__chat-view__channels
    .str-chat__container
    > .str-chat__dropzone-root--thread
    .str-chat__thread-container {
    transition: none !important;
  }

  .str-chat {
    height: 100%;
    width: 100%;
  }

  .str-chat__chat-view {
    container-type: inline-size;
  }

  .app-chat-view__channels-layout,
  .app-chat-view__threads-layout {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
    position: relative;
  }

  /* This is the whole left sidebar block (selector + list).
     We treat it as one piece so open/close and slide animations stay in sync. */
  .app-chat-sidebar-overlay {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
    flex: 0 0 auto;
    min-width: 0;
    height: 100%;
    position: relative;
    z-index: 1;
  }

  .app-chat-view__channels-layout > .str-chat__channel,
  .app-chat-view__threads-main {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
  }

  .app-chat-view__channel-content,
  .app-chat-view__channel-main {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
  }

  .app-chat-view__channel-body {
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    min-height: 0;
  }

  .app-chat-view__threads-main > * {
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
  }

  .app-chat-resize-handle {
    position: relative;
    flex: 0 0 1px;
    width: 1px;
    min-width: 1px;
    height: 100%;
    z-index: 1;
    background: var(--str-chat__border-core-default);
  }

  .app-chat-resize-handle__hitbox {
    position: absolute;
    inset-block: 0;
    inset-inline-start: -6px;
    width: 12px;
    display: flex;
    justify-content: center;
    cursor: col-resize;
    touch-action: none;
    transition: background-color 0.15s ease;

    &:hover {
      background: rgb(0 0 0 / 0.06);
    }
  }

  .app-chat-resize-handle__line {
    width: 1px;
    height: 100%;
    background: transparent;
  }

  .app-chat-resize-handle--thread {
    transition:
      flex-basis var(--str-chat__channel-list-transition-duration, 180ms)
        var(--str-chat__channel-list-transition-easing, ease),
      width var(--str-chat__channel-list-transition-duration, 180ms)
        var(--str-chat__channel-list-transition-easing, ease),
      min-width var(--str-chat__channel-list-transition-duration, 180ms)
        var(--str-chat__channel-list-transition-easing, ease),
      opacity var(--str-chat__channel-list-transition-duration, 180ms)
        var(--str-chat__channel-list-transition-easing, ease);
  }

  .app-chat-resize-handle--thread-hidden {
    flex: 0 0 0;
    width: 0;
    min-width: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
  }

  .app-chat-thread-panel {
    background: var(--str-chat__secondary-background-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: 0;
  }

  .app-loading-screen__window {
    width: 100%;
    height: 100%;
  }

  .str-chat__list,
  .str-chat__virtual-list {
    display: block;
    scrollbar-width: thin;
  }

  .str-chat__tooltip {
    z-index: 10;
  }

  @media (max-width: 767px) {
    .app-chat-resize-handle {
      display: none;
    }

    .app-chat-view__channel-content
      > .app-chat-thread-panel:not(.app-chat-thread-panel--open) {
      flex: 0 0 0;
      width: 0;
      min-width: 0;
      max-width: 0;
      opacity: 0;
      overflow: hidden;
      pointer-events: none;
      transform: translateX(
        calc(100% + var(--str-chat__channel-list-transition-offset, 8px))
      );
    }

    .app-chat-view__channel-content > .app-chat-thread-panel.app-chat-thread-panel--open {
      flex: 1 1 auto;
      min-width: 0;
      width: 100%;
      max-width: none;
      opacity: 1;
      pointer-events: auto;
      transform: translateX(0);
    }
  }

  /* Desktop layout (768px and up):
     keep the left sidebar and the channel/thread area side by side.
     The sidebar opens/closes as one unit, and thread width is still resizable. */
  @media (min-width: 768px) {
    .app-chat-view__channels-layout > .app-chat-sidebar-overlay,
    .app-chat-view__threads-layout > .app-chat-sidebar-overlay {
      overflow: hidden;
      opacity: 1;
      pointer-events: auto;
      transform: translateX(0);
      visibility: visible;
      transition:
        flex-basis var(--str-chat__channel-list-transition-duration, 180ms)
          var(--str-chat__channel-list-transition-easing, ease),
        width var(--str-chat__channel-list-transition-duration, 180ms)
          var(--str-chat__channel-list-transition-easing, ease),
        min-width var(--str-chat__channel-list-transition-duration, 180ms)
          var(--str-chat__channel-list-transition-easing, ease),
        max-width var(--str-chat__channel-list-transition-duration, 180ms)
          var(--str-chat__channel-list-transition-easing, ease),
        opacity var(--str-chat__channel-list-transition-duration, 180ms)
          var(--str-chat__channel-list-transition-easing, ease),
        transform var(--str-chat__channel-list-transition-duration, 180ms)
          var(--str-chat__channel-list-transition-easing, ease),
        visibility 0s linear 0s;
    }

    body[data-app-sidebar-resize-state='expanded']
      .app-chat-view__channels-layout
      > .app-chat-sidebar-overlay,
    .app-chat-view__channels-layout:not(
        .app-chat-view__channels-layout--sidebar-collapsed
      )
      > .app-chat-sidebar-overlay {
      flex: 0 0
        calc(
          var(--str-chat__chat-view-selector-mobile-width) +
            var(--str-chat__channel-list-width)
        );
      width: calc(
        var(--str-chat__chat-view-selector-mobile-width) +
          var(--str-chat__channel-list-width)
      );
      min-width: calc(
        var(--str-chat__chat-view-selector-mobile-width) +
          var(--str-chat__channel-list-width)
      );
      max-width: calc(
        var(--str-chat__chat-view-selector-mobile-width) +
          var(--str-chat__channel-list-width)
      );
    }

    body[data-app-sidebar-resize-state='expanded']
      .app-chat-view__threads-layout
      > .app-chat-sidebar-overlay,
    .app-chat-view__threads-layout:not(.app-chat-view__threads-layout--sidebar-collapsed)
      > .app-chat-sidebar-overlay {
      flex: 0 0
        calc(
          var(--str-chat__chat-view-selector-mobile-width) +
            var(--str-chat__thread-list-width)
        );
      width: calc(
        var(--str-chat__chat-view-selector-mobile-width) +
          var(--str-chat__thread-list-width)
      );
      min-width: calc(
        var(--str-chat__chat-view-selector-mobile-width) +
          var(--str-chat__thread-list-width)
      );
      max-width: calc(
        var(--str-chat__chat-view-selector-mobile-width) +
          var(--str-chat__thread-list-width)
      );
    }

    .app-chat-view__channels-layout--sidebar-collapsed > .app-chat-sidebar-overlay,
    .app-chat-view__threads-layout--sidebar-collapsed > .app-chat-sidebar-overlay {
      flex: 0 0 0;
      width: 0;
      min-width: 0;
      max-width: 0;
      opacity: 0;
      overflow: hidden;
      pointer-events: none;
      transform: translateX(
        calc(0px - 100% - var(--str-chat__channel-list-transition-offset, 8px))
      );
      visibility: hidden;
      transition-delay:
        0s, 0s, 0s, 0s, 0s, 0s, var(--str-chat__channel-list-transition-duration, 180ms);
    }

    /* Hide expand toggle in content headers when sidebar is visible */
    .app-chat-view__channels-layout:not(
        .app-chat-view__channels-layout--sidebar-collapsed
      )
      .str-chat__channel-header
      .str-chat__header-sidebar-toggle {
      display: none;
    }

    .app-chat-view__threads-layout:not(.app-chat-view__threads-layout--sidebar-collapsed)
      .str-chat__thread-header
      .str-chat__header-sidebar-toggle {
      display: none;
    }

    .app-chat-sidebar-overlay > .str-chat__chat-view__selector {
      position: static;
      inset: auto;
      width: var(--str-chat__chat-view-selector-mobile-width);
      min-width: var(--str-chat__chat-view-selector-mobile-width);
      height: 100%;
      transform: none;
      transition: none;
      z-index: auto;
      box-shadow: none;
      pointer-events: auto;
      visibility: visible;
    }

    .app-chat-sidebar-overlay > .str-chat__channel-list {
      flex: 0 0 var(--str-chat__channel-list-width);
      width: var(--str-chat__channel-list-width);
      min-width: var(--str-chat__channel-list-width);
      max-width: var(--str-chat__channel-list-width);
      height: 100%;
      transform: none;
    }

    .app-chat-sidebar-overlay > .str-chat__thread-list-container {
      flex: 0 0 var(--str-chat__thread-list-width);
      width: var(--str-chat__thread-list-width);
      min-width: var(--str-chat__thread-list-width);
      max-width: var(--str-chat__thread-list-width);
      height: 100%;
      transform: none;
    }

    .app-chat-view__channel-content {
      overflow-x: hidden;
      flex: 1 1 auto;
      min-width: 0;

      > .app-chat-view__channel-main {
        flex: 0 1 auto;
        flex-basis: 100%;
        width: auto;
        min-width: 0;
        max-width: none;
        opacity: 1;
        overflow: hidden;
        transition:
          flex-basis var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          min-width var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          width var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          max-width var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          opacity var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          transform var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease);
      }

      &.app-chat-view__channel-content--thread-open > .app-chat-view__channel-main {
        /* With thread open, give the thread its reserved width first,
           then let the main panel take whatever space is left. */
        flex-basis: max(0px, calc(100% - max(var(--app-thread-panel-width), 360px)));
        max-width: max(0px, calc(100% - max(var(--app-thread-panel-width), 360px)));
        min-width: 360px;
      }

      > .app-chat-resize-handle--thread + .app-chat-thread-panel {
        flex: 0 0 0;
        width: 0;
        min-width: 0;
        max-width: 0;
        opacity: 0;
        overflow: hidden;
        pointer-events: none;
        transform: translateX(
          calc(100% + var(--str-chat__channel-list-transition-offset, 8px))
        );
        transition:
          flex-basis var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          min-width var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          width var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          max-width var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          opacity var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease),
          transform var(--str-chat__channel-list-transition-duration, 180ms)
            var(--str-chat__channel-list-transition-easing, ease);
      }

      > .app-chat-resize-handle--thread
        + .app-chat-thread-panel.app-chat-thread-panel--open {
        flex: 0 0 max(var(--app-thread-panel-width), 360px);
        width: max(var(--app-thread-panel-width), 360px);
        max-width: max(var(--app-thread-panel-width), 360px);
        min-width: 360px;
        margin-inline-start: auto;
        opacity: 1;
        pointer-events: auto;
        transform: translateX(0);
      }
    }

    .app-chat-view__channel-content
      > .app-chat-resize-handle--thread
      + .app-chat-thread-panel
      .str-chat__dropzone-root--thread,
    .app-chat-view__channel-content
      > .app-chat-resize-handle--thread
      + .app-chat-thread-panel
      .str-chat__thread-container,
    .app-chat-view__channel-content
      > .app-chat-resize-handle--thread
      + .app-chat-thread-panel
      .str-chat__dropzone-root--thread
      .str-chat__thread-container {
      width: 100%;
      height: 100%;
      max-width: none;
    }

    /* Hide thread's own start border when resize handle provides the separator */
    .app-chat-resize-handle--thread + .app-chat-thread-panel .str-chat__thread-container {
      --str-chat__thread-border-inline-start: none;
    }

    /* If space gets tight while sidebar + thread are both open,
       prioritize the thread and collapse the main panel. */
    @container (max-width: 1148px) {
      .app-chat-view__channels-layout:not(
          .app-chat-view__channels-layout--sidebar-collapsed
        )
        .app-chat-view__channel-content--thread-open
        > .app-chat-view__channel-main {
        flex: 0 0 0;
        width: 0;
        min-width: 0;
        max-width: 0;
        opacity: 0;
        pointer-events: none;
        transform: translateX(
          calc(0px - var(--str-chat__channel-list-transition-offset, 8px))
        );
      }

      .app-chat-view__channels-layout:not(
          .app-chat-view__channels-layout--sidebar-collapsed
        )
        .app-chat-view__channel-content--thread-open
        > .app-chat-resize-handle--thread {
        flex: 0 0 0;
        width: 0;
        min-width: 0;
        opacity: 0;
        overflow: hidden;
        pointer-events: none;
      }

      .app-chat-view__channels-layout:not(
          .app-chat-view__channels-layout--sidebar-collapsed
        )
        .app-chat-view__channel-content--thread-open
        > .app-chat-thread-panel.app-chat-thread-panel--open {
        flex: 1 1 auto;
        width: auto;
        min-width: 360px;
        max-width: none;
        margin-inline-start: 0;
      }
    }
  }

  @container (max-width: 860px) {
    .app-chat-resize-handle--thread {
      display: none;
    }

    .str-chat__chat-view__channels
      .str-chat__container:has(.app-chat-resize-handle--thread)
      > .app-chat-resize-handle--thread
      + .app-chat-thread-panel.app-chat-thread-panel--open,
    .str-chat__thread-container {
      flex: 1 1 auto;
      width: 100%;
      max-width: none;
    }
  }

  @container (max-width: 768px) {
    /* Compact layout:
       the sidebar floats above chat content and slides from the left.
       Selector and list still move together as one panel. */
    .str-chat__chat-view {
      overflow: hidden;
    }

    .app-chat-view__channels-layout,
    .app-chat-view__threads-layout {
      overflow: hidden;
    }

    .app-chat-sidebar-overlay {
      position: absolute;
      inset-block: 0;
      inset-inline-start: 0;
      height: 100%;
      max-width: 100%;
      box-shadow: 8px 0 24px rgb(0 0 0 / 12%);
      transform: translateX(
        calc(0px - 100% - var(--str-chat__chat-view-selector-transition-offset, 8px))
      );
      pointer-events: none;
      visibility: hidden;
      transition:
        transform var(--str-chat__chat-view-selector-transition-duration, 180ms)
          var(--str-chat__chat-view-selector-transition-easing, ease),
        visibility 0s linear
          var(--str-chat__chat-view-selector-transition-duration, 180ms);
      z-index: 1;
    }

    .app-chat-view__channels-layout:not(
        .app-chat-view__channels-layout--sidebar-collapsed
      )
      > .app-chat-sidebar-overlay,
    .app-chat-view__threads-layout:not(.app-chat-view__threads-layout--sidebar-collapsed)
      > .app-chat-sidebar-overlay {
      transform: translateX(0);
      pointer-events: auto;
      visibility: visible;
      transition-delay: 0s, 0s;
    }

    .app-chat-sidebar-overlay > .str-chat__chat-view__selector {
      position: static;
      inset: auto;
      width: var(--str-chat__chat-view-selector-mobile-width);
      min-width: var(--str-chat__chat-view-selector-mobile-width);
      height: 100%;
      transform: none;
      transition: none;
      z-index: auto;
      box-shadow: none;
    }

    .app-chat-sidebar-overlay > .str-chat__channel-list {
      position: static;
      inset: auto;
      flex: 0 0 auto;
      pointer-events: auto;
      visibility: visible;
      width: min(
        var(--str-chat__channel-list-width),
        calc(100vw - var(--str-chat__chat-view-selector-mobile-width))
      );
      min-width: min(
        var(--str-chat__channel-list-width),
        calc(100vw - var(--str-chat__chat-view-selector-mobile-width))
      );
      max-width: calc(100vw - var(--str-chat__chat-view-selector-mobile-width));
      height: 100%;
      transform: none;
    }

    .app-chat-sidebar-overlay > .str-chat__thread-list-container {
      position: static;
      inset: auto;
      flex: 0 0 auto;
      pointer-events: auto;
      visibility: visible;
      width: min(
        var(--str-chat__thread-list-width),
        calc(100vw - var(--str-chat__chat-view-selector-mobile-width))
      );
      min-width: min(
        var(--str-chat__thread-list-width),
        calc(100vw - var(--str-chat__chat-view-selector-mobile-width))
      );
      max-width: calc(100vw - var(--str-chat__chat-view-selector-mobile-width));
      height: 100%;
      transform: none;
    }

    .app-chat-view__channels-layout > .app-chat-resize-handle,
    .app-chat-view__threads-layout > .app-chat-resize-handle {
      display: none;
    }

    .app-chat-view__channel-content--thread-open .app-chat-view__channel-main {
      flex: 0 0 0;
      width: 0;
      min-width: 0;
      max-width: 0;
      opacity: 0;
      pointer-events: none;
      transform: translateX(
        calc(0px - var(--str-chat__channel-list-transition-offset, 8px))
      );
    }

    .app-chat-view__channel-content--thread-open > .app-chat-resize-handle--thread {
      flex: 0 0 0;
      width: 0;
      min-width: 0;
      opacity: 0;
      overflow: hidden;
      pointer-events: none;
    }

    .app-chat-view__channel-content--thread-open
      > .app-chat-thread-panel.app-chat-thread-panel--open {
      flex: 1 1 auto;
      min-width: 0;
      width: 100%;
      max-width: none;
      opacity: 1;
      pointer-events: auto;
      transform: translateX(0);
    }
  }
}