discourse/app/assets/stylesheets/common/base/share_link.scss

// styles that apply to the "share" modal & popup when sharing a link to a post or topic

.link-share-container {
  display: flex;
  button {
    margin-left: 0.5em;
    transition-property: background-color, color; // don't transition outline
  }
  input {
    width: 100%;
    font-size: var(--font-up-1);
    margin-bottom: 0;
    &:focus + button {
      outline: 1px solid var(--tertiary);
    }
  }
}

.link-share-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;

  button {
    margin-top: 0.5em;
    margin-right: 0.5em;
  }

  .sources {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
  }

  .new-topic {
    margin-right: 0;
  }

  .alt-actions {
    display: flex;
    justify-content: flex-end;
    margin-left: auto;
  }
}

.share-twitter {
  .d-icon {
    color: var(--twitter);
  }
}
.share-facebook {
  .d-icon {
    color: var(--facebook);
  }
}

// post share popup

#share-link {
  position: absolute;
  z-index: z("dropdown");
  box-shadow: shadow("card");
  background-color: var(--secondary);
  padding: 0.5em;
  width: 300px;
  display: none;
  &.visible {
    display: block;
  }

  input[type="text"] {
    width: 100%;
  }

  .title {
    margin-bottom: 0.5em;
    align-items: center;
    display: flex;

    h3 {
      font-size: $font-0;
      margin: 0;
    }

    .date {
      font-weight: normal;
      color: var(--primary-med-or-secondary-med);
      margin-left: 0.5em;
    }

    .btn.close {
      margin-left: auto;
    }
  }
}

// topic share modal

.share-topic-modal {
  form {
    margin-bottom: 0;
  }

  .invite-users {
    display: flex;
    flex-direction: column;
    margin: 1.5em 0 0.25em;
    width: 100%;

    button {
      margin-top: 0;
      margin-right: 0;
    }
  }
}

.notify-user-input {
  display: flex;
  align-items: stretch;

  .select-kit {
    width: 100%;
  }

  .multi-select-header {
    width: 100%;
  }

  .select-kit.multi-select .choices {
    padding: 0;
  }
}

// topic invite modal

.create-invite-modal {
  form {
    margin: 0;
  }

  input {
    margin-bottom: 0;
  }

  label {
    margin-right: 0.5em;
    .d-icon {
      color: var(--primary-medium);
      margin-right: 0.75em;
    }
  }

  textarea {
    margin-bottom: 0;
  }

  .input-group:not(:last-of-type) {
    margin-bottom: 1em;
  }
  .input-group.input-expires-at,
  .input-group.input-email,
  .input-group.invite-max-redemptions {
    input[type="text"] {
      width: unset;
    }
  }

  .existing-topic,
  p {
    // p is for "no topics found"
    margin-left: 1.75em;
    margin-top: 0.25em;
  }

  .input-group.input-email {
    display: flex;
    align-items: baseline;
    label {
      display: inline;
    }
  }

  .invite-email-container {
    flex: 1 1 auto;
    #invite-email {
      width: 100%;
    }
  }

  .invite-max-redemptions {
    label {
      display: inline;
    }
    input {
      width: 80px;
    }
  }

  .show-advanced {
    margin-left: auto;
    margin-right: 0;
  }

  .input-group {
    textarea#invite-message,
    &.invite-to-topic input[type="text"],
    .group-chooser,
    .user-chooser,
    .future-date-input-selector,
    .future-date-input-date-picker,
    .future-date-input-time-picker {
      margin-left: 1.75em;
      width: calc(100% - 1.75em);
    }
  }
}