discourse/app/assets/stylesheets/mobile/topic-post.scss

/* hide the reply border above the time gap notices */
.time-gap + .topic-post article {
  border-top: none;
}

.time-gap {
  .topic-avatar {
    display: none;
  }
}

.topic-post-visited {
  + .topic-post article {
    border-top: none;
  }
}

.topic-post article {
  border-top: 1px solid var(--primary-low);
  padding: 15px 0 8px 0;
}

span.badge-posts {
  margin-right: 5px;
}

.show-replies {
  display: none;
}

nav.post-controls {
  // for consistency, try to control spacing by editing these variables
  --control-space: 0.58em;
  --control-space-small: calc(var(--control-space) / 2);
  --control-space-large: calc(var(--control-space) * 1.3);
  // on small devices with many buttons this can overflow
  overflow-x: scroll;

  .actions {
    // using an auto margin on first-child instead of justify-content on the parent
    // because justify-content breaks overflow scrolling
    :first-child {
      margin-left: auto;
    }
    // Some buttons can be doubled up, like likes or flags
    .double-button {
      button {
        &.button-count {
          padding: var(--control-space);
          + .toggle-like,
          + .create-flag {
            padding: var(--control-space) var(--control-space-large)
              var(--control-space) var(--control-space-small);
          }
          &.regular-likes {
            padding: var(--control-space) var(--control-space-small)
              var(--control-space) var(--control-space-large);
          }
        }
      }
    }
    button {
      padding: var(--control-space) var(--control-space-large);
      &.expand-post {
        margin: var(--control-space) 0 var(--control-space) 0;
      }
      &.has-like {
        .d-icon {
          color: var(--love);
        }
      }
    }
  }

  .show-replies {
    display: flex;
    align-items: center;
    padding: 9px;
    border-radius: var(--d-button-border-radius);

    .d-icon {
      padding-left: var(--control-space);
      margin-left: 0 !important;
    }
    &[aria-expanded="true"] {
      background: var(--primary-low);
      color: var(--primary-high);
      box-shadow: 0px 0px 0px 1px var(--primary-300);
      z-index: 1;
      margin-left: 1px;
      .d-icon {
        color: var(--primary-high);
      }
      &:hover,
      &:focus {
        color: var(--primary);
        background: var(--primary-300);
      }
    }
  }

  &.replies-button-visible {
    display: flex;
    align-items: center;
    .show-replies {
      display: flex;
      + .reply {
        margin-left: 0;
      }
      .d-icon {
        padding-left: var(--control-space);
      }
    }
    .actions {
      flex-grow: 2;
    }
  }
}

nav.post-controls button.reply .d-icon {
  color: var(--primary-high);
}

.post-admin-menu {
  bottom: -50px;
  left: 135px;
  @media screen and (max-width: 374px) {
    left: 50px;
  }
}

.embedded-posts {
  position: relative;
  padding: 0.75em 0.5em 0.75em 0;
  max-width: 100%;
  margin-left: 0;
  > div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    margin-bottom: 1.5em;
    .row {
      // Main reply line
      &:before {
        content: "";
        position: absolute;
        top: calc(-2px - 0.75em);
        width: 1px;
        height: calc(100% + 1.5em + 5px);
        background: var(--primary-300);
        left: 24px;
      }
    }
    .topic-avatar {
      @include sticky;
      top: calc(var(--header-offset) + 0.5em);
      margin-right: 15px;
    }
    .topic-body {
      display: flex;
      flex-direction: column;
      max-width: calc(100% - 32px);
      margin-left: auto;
      gap: 0.25em 0;
      padding-bottom: 1.5em;
      .topic-meta-data.embedded-reply {
        margin-left: 0;
        h5 a {
          margin-left: 10px;
        }
        .names {
          margin-bottom: 0.25em;
          .user-title {
            display: none;
          }
          .second {
            flex-basis: auto;
          }
        }
        .post-link-arrow {
          position: absolute;
          bottom: 0;
          .post-info.arrow {
            padding: 0.5em 0;
            margin-right: 0;
            color: var(--primary-med-or-secondary-high);
            line-height: 1;
            &:hover,
            &:focus {
              color: var(--primary-high);
            }
          }
        }
      }
    }
  }
  .collapse-up {
    position: relative;
    padding: 6px;
    color: var(--primary-high);
    background: var(--primary-low);
    z-index: 1;
    transform: translate(25%, -30%);
    box-shadow: 0px 0px 0px 1px var(--primary-300);
    .archetype-private_message & {
      display: flex;
    }
    .d-icon {
      transform: scale(0.871);
    }
    &:hover,
    &:focus {
      background: var(--primary-300);
      .d-icon {
        color: var(--primary);
      }
    }
  }
  .load-more-replies {
    font-size: var(--font-down-1);
    position: absolute;
    left: 50%;
    transform: translate(-50%, 150%);
    padding: 0.35em 0.5em;
  }
}

.post-actions {
  /* overriding display: here was causing hidden element to take up space */
}

.post-action {
  float: right;
  margin-right: 10px;
  clear: right;
}

.post-action .relative-date {
  margin-left: 5px;
}

a.reply-to-tab {
  z-index: z("base") + 1;
  color: var(--primary-med-or-secondary-med);
  margin-right: 0.5em;
}

.topic-post .boxed .contents {
  clear: both;
}

span.post-count {
  background: var(--primary);
  color: var(--secondary);
  opacity: 0.8;
}

#topic-title {
  z-index: z("base") + 1;
  margin: 0;
  padding: 0 0 1em;
}

.quote-button.visible {
  z-index: z("tooltip");
}

.btn-group {
  margin-top: 25px;
  position: relative;
}

.dropdown-toggle {
  float: left;
  position: relative;
}

.selected-posts {
  padding: 0.1em 0.7em;
}

// hide the full set of selection buttons on mobile
.select-posts button {
  display: none;
}

// unhide the simple "select just this post" button
button.select-post {
  display: inline-block;
}

.deleted-user-avatar {
  font-size: var(--font-up-5);
}

span.btn-text {
  display: none;
}

blockquote {
  clear: both;
  /* leave browser defaults for top and bottom here */
  margin-left: 0;
  margin-right: 0;
}

pre.codeblock-buttons code {
  padding-right: 2.75em;
}

.gap {
  padding: 0.25em 0;
}

.posts-wrapper {
  position: relative;
}

span.highlighted {
  background-color: var(--highlight-bg);
}

.topic-avatar {
  float: left;
  margin-right: 10px;
  z-index: z("base") + 1;
  /* must render on top of topic-body + topic-meta-data, otherwise not tappable */
}

.topic-meta-data {
  margin-left: 50px;
  font-size: var(--font-down-1);
  .names {
    line-height: var(--line-height-medium);
    display: flex;
    flex-wrap: wrap;

    .full-name {
      font-weight: bold;
    }

    .first {
      order: 1;
    }

    .poster-icon {
      order: 2;
    }

    .user-status-message-wrap {
      order: 2;
    }

    .second {
      order: 3;
      flex-basis: 100%;
    }

    .user-title {
      order: 4;
      flex-basis: 100%;
    }

    .user-badge-buttons {
      order: 5;
      .user-badge {
        padding-top: 0;
      }
    }

    span {
      margin-right: 0.26em;
    }
  }
}

.username.new-user a {
  color: var(--primary-low-mid);
}

.user-title {
  color: var(--primary-medium);
  overflow: hidden;
  margin-right: 50px;
}

.read-state {
  // contained within the padding to prevent vertical overflow
  max-width: var(--d-wrap-padding-h);
  right: calc(var(--d-wrap-padding-h) * -1);
  font-size: var(--font-down-5);

  svg {
    right: -0.25em;
  }
}

.post-notice {
  box-sizing: border-box;
  margin-bottom: 1em;
  &.old {
    border-top: none;
    padding-top: 0;
  }
}

.posts-filtered-notice {
  padding-right: 8.5em;
  padding-bottom: unquote("max(1em, env(safe-area-inset-bottom))");
  flex-wrap: wrap;
  justify-content: flex-start;
  margin: 1em -9px;

  z-index: 101;
  .filtered-replies-show-all {
    position: absolute;
    right: 1em;
  }

  .filtered-replies-viewing {
    text-align: left;
    width: 100%;
  }

  .filtered-avatar {
    margin-left: 0;
    img.avatar {
      width: 20px;
      height: 20px;
    }
  }
}

.open-popup-link {
  opacity: 100%;
  margin-bottom: 1rem;
}

.placeholder .topic-body {
  width: 100%;
}