php-flarum/less/forum/Composer.less

// ------------------------------------
// Composer

.Composer {
  pointer-events: auto;
  box-shadow: 0 2px 6px var(--shadow-color);

  &.minimized {
    height: 46px;
    cursor: pointer;
    background: var(--control-bg);
  }
}
.Composer-controls {
  list-style: none;
  padding: 0;
  margin: 0;
}
.ComposerBody-content {
  .minimized & {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}
.ComposerBody-header {
  list-style: none;
  padding: 1px 0;
  margin: 0 0 10px;

  .minimized & {
    pointer-events: none;
  }

  > li {
    display: inline-block;
    margin-right: -4px;
  }
  h3 {
    margin: 0;
    line-height: 1.5em;
    color: var(--secondary-color);

    &, input, a {
      font-size: 14px;
      font-weight: normal;
    }
    input, a {
      color: inherit;
    }
    input {
      font-size: 16px;
      width: 500px;

      &, &[disabled], &:focus {
        background: none;
        border: 0;
        padding: 0 20px 0 0;
        height: auto;
      }
    }
    .icon {
      font-size: 14px;
      margin-right: 3px;
    }
  }
}
.fa-minus.minimize {
  vertical-align: -5px;
}
.Composer-controls {
  position: absolute;
  right: 10px;
  top: 10px;
  z-index: 1;

  & li {
    display: inline-block;
  }
  .minimized & {
    top: 7px;
  }
}
.ComposerBody-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--body-bg-faded);
  display: none;
  border-radius: var(--border-radius) var(--border-radius) 0 0;

  &.active {
    display: flex;
  }
}
.ComposerBody-editor {
  .minimized & {
    visibility: hidden;
  }
}

// On phones, show the composer as a fixed overlay that covers the whole
// screen. The controls are hidden (except for the 'x', which is the back-
// control), and the avatar hidden.
@media @phone {
  .Composer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--zindex-composer);
    background: var(--body-bg);

    &:not(.minimized) {
      position: fixed;
      top: 0;
      height: 350px !important;
      max-height: 100%;
      padding-top: var(--header-height-phone);

      // Fixes a bug where fixed position doesn't properly work in Safari mobile
      // https://github.com/flarum/core/issues/2652
      .mobile-safari & {
        position: absolute;
      }

      &:before {
        content: " ";
        .header-background();
        position: absolute;
        opacity: 0;

        .visible& {
          opacity: 1;
        }
      }

      & .Composer-controls {
        position: static;
        z-index: calc(~"var(--zindex-header) + 1");

        li:not(.App-backControl) {
          display: none;
        }
        .App-backControl {
          position: absolute !important;
        }
      }
    }
  }
  .Composer-controls .fa-minus:before {
    content: @fa-var-times;
  }
  .composer-backdrop {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: calc(~"var(--zindex-composer) - 1");
    background-color: var(--overlay-bg);
    opacity: 0.9;
  }
  .ComposerBody-content {
    .minimized & {
      margin-right: 50px;
    }
  }
  .ComposerBody-avatar {
    display: none;
  }
  .ComposerBody-header {
    margin-bottom: 0;

    > li {
      display: block;
      border-bottom: 1px solid var(--control-bg);
      padding: 10px 15px;

      .minimized & {
        border-bottom: 0;
        padding: 15px;
      }

      .normal &:first-child {
        margin: calc(~"0px - var(--header-height-phone)") 50px 0;
        text-align: center;
        position: relative;
        z-index: calc(~"var(--zindex-header) + 1");
        border: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;

        h3 {
          color: var(--header-control-color);
        }
      }
    }
    h3 input {
      width: 100% !important;
    }
  }
  .ComposerBody-editor {
    padding: 15px;
  }
  .ComposerBody-editor .TextEditor-controls .item-submit {
    position: absolute !important;
  }
}

// On larger screens, show the composer as a window at the bottom of the
// content area. We hide a lot of the content when the composer is minimized.
@media @tablet-up {
  .App-composer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--zindex-composer);
    pointer-events: none;
    transition: left 0.2s;
  }
  .Composer {
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    background: var(--body-bg-faded);
    position: relative;
    height: 300px;
    transition: background 0.2s, box-shadow 0.2s;

    &.active, &.fullScreen {
      background: var(--body-bg);
    }
    &.active:not(.fullScreen) {
      box-shadow: 0 0 0 2px var(--primary-color), 0 2px 6px var(--shadow-color);
    }
    &.fullScreen {
      position: fixed;
      left: 0;
      top: 0;
      bottom: 0;
      right: 0;
      margin: 0;
      height: auto;
      border-radius: 0;
    }
  }
  .Composer-controls {
    .fullScreen & .Button {
      padding: 13px;
      width: auto;

      .Button-icon {
        font-size: 20px;
      }
    }
  }
  .ComposerBody-header {
    .fullScreen & {
      margin-bottom: 20px;
    }
  }
  .Composer-content {
    padding: 20px 20px 0;

    .minimized & {
      padding: 12px 20px;
    }
    .fullScreen & {
      max-width: 900px;
      margin: 0 auto;
      padding: 30px;
    }
  }
  .Composer-handle {
    height: 15px;
    margin-bottom: -17px;
    position: relative;

    .minimized &, .fullScreen & {
      display: none;
    }
  }
  .ComposerBody-avatar {
    float: left;
    .Avatar--size(64px);

    .minimized &, .fullScreen & {
      display: none;
    }
  }
  .ComposerBody-content {
    margin-left: 85px;

    .minimized &, .fullScreen & {
      margin-left: 0;
    }
  }
  .ComposerBody-editor {
    .fullScreen & .TextEditor-editor {
      font-size: 16px;
    }
  }
  .ComposerBody--discussion .ComposerBody-header .item-title {
    display: none;
  }
}

@media @desktop-up {
  .Composer:not(.fullScreen) {
    margin-left: 220px;
    margin-right: -20px;

    .App--discussion & {
      margin-left: -20px;
      margin-right: 205px;
    }
  }
}

@media @desktop-hd {
  .hasPane.panePinned .App-composer {
    left: var(--pane-width);
  }
}