diff --git a/app/javascript/mastodon/components/status.js b/app/javascript/mastodon/components/status.js
index 0d3b51f07a..381088be73 100644
--- a/app/javascript/mastodon/components/status.js
+++ b/app/javascript/mastodon/components/status.js
@@ -86,6 +86,7 @@ class Status extends ImmutablePureComponent {
     onToggleHidden: PropTypes.func,
     onToggleCollapsed: PropTypes.func,
     onTranslate: PropTypes.func,
+    onInteractionModal: PropTypes.func,
     muted: PropTypes.bool,
     hidden: PropTypes.bool,
     unread: PropTypes.bool,
diff --git a/app/javascript/mastodon/components/status_action_bar.js b/app/javascript/mastodon/components/status_action_bar.js
index 4b384e6e54..9e8cadce28 100644
--- a/app/javascript/mastodon/components/status_action_bar.js
+++ b/app/javascript/mastodon/components/status_action_bar.js
@@ -82,6 +82,7 @@ class StatusActionBar extends ImmutablePureComponent {
     onBookmark: PropTypes.func,
     onFilter: PropTypes.func,
     onAddFilter: PropTypes.func,
+    onInteractionModal: PropTypes.func,
     withDismiss: PropTypes.bool,
     withCounters: PropTypes.bool,
     scrollKey: PropTypes.string,
@@ -97,10 +98,12 @@ class StatusActionBar extends ImmutablePureComponent {
   ]
 
   handleReplyClick = () => {
-    if (me) {
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
       this.props.onReply(this.props.status, this.context.router.history);
     } else {
-      this._openInteractionDialog('reply');
+      this.props.onInteractionModal('reply', this.props.status);
     }
   }
 
@@ -114,25 +117,25 @@ class StatusActionBar extends ImmutablePureComponent {
   }
 
   handleFavouriteClick = () => {
-    if (me) {
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
       this.props.onFavourite(this.props.status);
     } else {
-      this._openInteractionDialog('favourite');
+      this.props.onInteractionModal('favourite', this.props.status);
     }
   }
 
   handleReblogClick = e => {
-    if (me) {
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
       this.props.onReblog(this.props.status, e);
     } else {
-      this._openInteractionDialog('reblog');
+      this.props.onInteractionModal('reblog', this.props.status);
     }
   }
 
-  _openInteractionDialog = type => {
-    window.open(`/interact/${this.props.status.get('id')}?type=${type}`, 'mastodon-intent', 'width=445,height=600,resizable=no,menubar=no,status=no,scrollbars=yes');
-  }
-
   handleBookmarkClick = () => {
     this.props.onBookmark(this.props.status);
   }
diff --git a/app/javascript/mastodon/containers/status_container.js b/app/javascript/mastodon/containers/status_container.js
index 9280a6ee3f..294105f259 100644
--- a/app/javascript/mastodon/containers/status_container.js
+++ b/app/javascript/mastodon/containers/status_container.js
@@ -237,6 +237,14 @@ const mapDispatchToProps = (dispatch, { intl, contextType }) => ({
     dispatch(deployPictureInPicture(status.get('id'), status.getIn(['account', 'id']), type, mediaProps));
   },
 
+  onInteractionModal (type, status) {
+    dispatch(openModal('INTERACTION', {
+      type,
+      accountId: status.getIn(['account', 'id']),
+      url: status.get('url'),
+    }));
+  },
+
 });
 
 export default injectIntl(connect(makeMapStateToProps, mapDispatchToProps)(Status));
diff --git a/app/javascript/mastodon/features/account/components/header.js b/app/javascript/mastodon/features/account/components/header.js
index e407a0d55c..765b3cc1e7 100644
--- a/app/javascript/mastodon/features/account/components/header.js
+++ b/app/javascript/mastodon/features/account/components/header.js
@@ -96,6 +96,7 @@ class Header extends ImmutablePureComponent {
     onAddToList: PropTypes.func.isRequired,
     onEditAccountNote: PropTypes.func.isRequired,
     onChangeLanguages: PropTypes.func.isRequired,
+    onInteractionModal: PropTypes.func.isRequired,
     intl: PropTypes.object.isRequired,
     domain: PropTypes.string.isRequired,
     hidden: PropTypes.bool,
@@ -177,7 +178,7 @@ class Header extends ImmutablePureComponent {
       } else if (account.getIn(['relationship', 'requested'])) {
         actionBtn = <Button className={classNames('logo-button', { 'button--with-bell': bellBtn !== '' })} text={intl.formatMessage(messages.cancel_follow_request)} title={intl.formatMessage(messages.requested)} onClick={this.props.onFollow} />;
       } else if (!account.getIn(['relationship', 'blocking'])) {
-        actionBtn = <Button disabled={account.getIn(['relationship', 'blocked_by'])} className={classNames('logo-button', { 'button--destructive': account.getIn(['relationship', 'following']), 'button--with-bell': bellBtn !== '' })} text={intl.formatMessage(account.getIn(['relationship', 'following']) ? messages.unfollow : messages.follow)} onClick={signedIn ? this.props.onFollow : undefined} />;
+        actionBtn = <Button disabled={account.getIn(['relationship', 'blocked_by'])} className={classNames('logo-button', { 'button--destructive': account.getIn(['relationship', 'following']), 'button--with-bell': bellBtn !== '' })} text={intl.formatMessage(account.getIn(['relationship', 'following']) ? messages.unfollow : messages.follow)} onClick={signedIn ? this.props.onFollow : this.props.onInteractionModal} />;
       } else if (account.getIn(['relationship', 'blocking'])) {
         actionBtn = <Button className='logo-button' text={intl.formatMessage(messages.unblock, { name: account.get('username') })} onClick={this.props.onBlock} />;
       }
diff --git a/app/javascript/mastodon/features/account_timeline/components/header.js b/app/javascript/mastodon/features/account_timeline/components/header.js
index f9838442f5..f31848f412 100644
--- a/app/javascript/mastodon/features/account_timeline/components/header.js
+++ b/app/javascript/mastodon/features/account_timeline/components/header.js
@@ -23,6 +23,7 @@ export default class Header extends ImmutablePureComponent {
     onEndorseToggle: PropTypes.func.isRequired,
     onAddToList: PropTypes.func.isRequired,
     onChangeLanguages: PropTypes.func.isRequired,
+    onInteractionModal: PropTypes.func.isRequired,
     hideTabs: PropTypes.bool,
     domain: PropTypes.string.isRequired,
     hidden: PropTypes.bool,
@@ -96,6 +97,10 @@ export default class Header extends ImmutablePureComponent {
     this.props.onChangeLanguages(this.props.account);
   }
 
+  handleInteractionModal = () => {
+    this.props.onInteractionModal(this.props.account);
+  }
+
   render () {
     const { account, hidden, hideTabs } = this.props;
 
@@ -123,6 +128,7 @@ export default class Header extends ImmutablePureComponent {
           onAddToList={this.handleAddToList}
           onEditAccountNote={this.handleEditAccountNote}
           onChangeLanguages={this.handleChangeLanguages}
+          onInteractionModal={this.handleInteractionModal}
           domain={this.props.domain}
           hidden={hidden}
         />
diff --git a/app/javascript/mastodon/features/account_timeline/containers/header_container.js b/app/javascript/mastodon/features/account_timeline/containers/header_container.js
index 3d6eb487db..46fa573dd8 100644
--- a/app/javascript/mastodon/features/account_timeline/containers/header_container.js
+++ b/app/javascript/mastodon/features/account_timeline/containers/header_container.js
@@ -57,6 +57,14 @@ const mapDispatchToProps = (dispatch, { intl }) => ({
     }
   },
 
+  onInteractionModal (account) {
+    dispatch(openModal('INTERACTION', {
+      type: 'follow',
+      accountId: account.get('id'),
+      url: account.get('url'),
+    }));
+  },
+
   onBlock (account) {
     if (account.getIn(['relationship', 'blocking'])) {
       dispatch(unblockAccount(account.get('id')));
diff --git a/app/javascript/mastodon/features/interaction_modal/index.js b/app/javascript/mastodon/features/interaction_modal/index.js
new file mode 100644
index 0000000000..6a7aa9c1c7
--- /dev/null
+++ b/app/javascript/mastodon/features/interaction_modal/index.js
@@ -0,0 +1,132 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { FormattedMessage } from 'react-intl';
+import { registrationsOpen } from 'mastodon/initial_state';
+import { connect } from 'react-redux';
+import Icon from 'mastodon/components/icon';
+import classNames from 'classnames';
+
+const mapStateToProps = (state, { accountId }) => ({
+  displayNameHtml: state.getIn(['accounts', accountId, 'display_name_html']),
+});
+
+class Copypaste extends React.PureComponent {
+
+  static propTypes = {
+    value: PropTypes.string,
+  };
+
+  state = {
+    copied: false,
+  };
+
+  setRef = c => {
+    this.input = c;
+  }
+
+  handleInputClick = () => {
+    this.setState({ copied: false });
+    this.input.focus();
+    this.input.select();
+    this.input.setSelectionRange(0, this.input.value.length);
+  }
+
+  handleButtonClick = () => {
+    const { value } = this.props;
+    navigator.clipboard.writeText(value);
+    this.input.blur();
+    this.setState({ copied: true });
+    this.timeout = setTimeout(() => this.setState({ copied: false }), 700);
+  }
+
+  componentWillUnmount () {
+    if (this.timeout) clearTimeout(this.timeout);
+  }
+
+  render () {
+    const { value } = this.props;
+    const { copied } = this.state;
+
+    return (
+      <div className={classNames('copypaste', { copied })}>
+        <input
+          type='text'
+          ref={this.setRef}
+          value={value}
+          readOnly
+          onClick={this.handleInputClick}
+        />
+
+        <button className='button' onClick={this.handleButtonClick}>
+          {copied ? <FormattedMessage id='copypaste.copied' defaultMessage='Copied' /> : <FormattedMessage id='copypaste.copy' defaultMessage='Copy' />}
+        </button>
+      </div>
+    );
+  }
+
+}
+
+export default @connect(mapStateToProps)
+class InteractionModal extends React.PureComponent {
+
+  static propTypes = {
+    displayNameHtml: PropTypes.string,
+    url: PropTypes.string,
+    type: PropTypes.oneOf(['reply', 'reblog', 'favourite', 'follow']),
+  };
+
+  render () {
+    const { url, type, displayNameHtml } = this.props;
+
+    const name = <bdi dangerouslySetInnerHTML={{ __html: displayNameHtml }} />;
+
+    let title, actionDescription, icon;
+
+    switch(type) {
+    case 'reply':
+      icon = <Icon id='reply' />;
+      title = <FormattedMessage id='interaction_modal.title.reply' defaultMessage="Reply to {name}'s post" values={{ name }} />;
+      actionDescription = <FormattedMessage id='interaction_modal.description.reply' defaultMessage='With an account on Mastodon, you can respond to this post.' />;
+      break;
+    case 'reblog':
+      icon = <Icon id='retweet' />;
+      title = <FormattedMessage id='interaction_modal.title.reblog' defaultMessage="Boost {name}'s post" values={{ name }} />;
+      actionDescription = <FormattedMessage id='interaction_modal.description.reblog' defaultMessage='With an account on Mastodon, you can boost this post to share it with your own followers.' />;
+      break;
+    case 'favourite':
+      icon = <Icon id='star' />;
+      title = <FormattedMessage id='interaction_modal.title.favourite' defaultMessage="Favourite {name}'s post" values={{ name }} />;
+      actionDescription = <FormattedMessage id='interaction_modal.description.favourite' defaultMessage='With an account on Mastodon, you can favourite this post to let the author know you appreciate it and save it for later.' />;
+      break;
+    case 'follow':
+      icon = <Icon id='user-plus' />;
+      title = <FormattedMessage id='interaction_modal.title.follow' defaultMessage='Follow {name}' values={{ name }} />;
+      actionDescription = <FormattedMessage id='interaction_modal.description.follow' defaultMessage='With an account on Mastodon, you can follow {name} to receive their posts in your home feed.' values={{ name }} />;
+      break;
+    }
+
+    return (
+      <div className='modal-root__modal interaction-modal'>
+        <div className='interaction-modal__lead'>
+          <h3><span className='interaction-modal__icon'>{icon}</span> {title}</h3>
+          <p>{actionDescription} <FormattedMessage id='interaction_modal.preamble' defaultMessage="Since Mastodon is decentralized, you can use your existing account hosted by another Mastodon server or compatible platform if you don't have an account on this one." /></p>
+        </div>
+
+        <div className='interaction-modal__choices'>
+          <div className='interaction-modal__choices__choice'>
+            <h3><FormattedMessage id='interaction_modal.on_this_server' defaultMessage='On this server' /></h3>
+            <a href='/auth/sign_in' className='button button--block'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Sign in' /></a>
+            <a href={registrationsOpen ? '/auth/sign_up' : 'https://joinmastodon.org/servers'} className='button button--block button-tertiary'><FormattedMessage id='sign_in_banner.create_account' defaultMessage='Create account' /></a>
+          </div>
+
+          <div className='interaction-modal__choices__choice'>
+            <h3><FormattedMessage id='interaction_modal.on_another_server' defaultMessage='On a different server' /></h3>
+            <p><FormattedMessage id='interaction_modal.other_server_instructions' defaultMessage='Simply copy and paste this URL into the search bar of your favourite app or the web interface where you are signed in.' /></p>
+            <Copypaste value={url} />
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/picture_in_picture/components/footer.js b/app/javascript/mastodon/features/picture_in_picture/components/footer.js
index 0cb42b25aa..0beb2e14dc 100644
--- a/app/javascript/mastodon/features/picture_in_picture/components/footer.js
+++ b/app/javascript/mastodon/features/picture_in_picture/components/footer.js
@@ -43,6 +43,7 @@ class Footer extends ImmutablePureComponent {
 
   static contextTypes = {
     router: PropTypes.object,
+    identity: PropTypes.object,
   };
 
   static propTypes = {
@@ -67,26 +68,44 @@ class Footer extends ImmutablePureComponent {
   };
 
   handleReplyClick = () => {
-    const { dispatch, askReplyConfirmation, intl } = this.props;
-
-    if (askReplyConfirmation) {
-      dispatch(openModal('CONFIRM', {
-        message: intl.formatMessage(messages.replyMessage),
-        confirm: intl.formatMessage(messages.replyConfirm),
-        onConfirm: this._performReply,
-      }));
+    const { dispatch, askReplyConfirmation, status, intl } = this.props;
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      if (askReplyConfirmation) {
+        dispatch(openModal('CONFIRM', {
+          message: intl.formatMessage(messages.replyMessage),
+          confirm: intl.formatMessage(messages.replyConfirm),
+          onConfirm: this._performReply,
+        }));
+      } else {
+        this._performReply();
+      }
     } else {
-      this._performReply();
+      dispatch(openModal('INTERACTION', {
+        type: 'reply',
+        accountId: status.getIn(['account', 'id']),
+        url: status.get('url'),
+      }));
     }
   };
 
   handleFavouriteClick = () => {
     const { dispatch, status } = this.props;
-
-    if (status.get('favourited')) {
-      dispatch(unfavourite(status));
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      if (status.get('favourited')) {
+        dispatch(unfavourite(status));
+      } else {
+        dispatch(favourite(status));
+      }
     } else {
-      dispatch(favourite(status));
+      dispatch(openModal('INTERACTION', {
+        type: 'favourite',
+        accountId: status.getIn(['account', 'id']),
+        url: status.get('url'),
+      }));
     }
   };
 
@@ -97,13 +116,22 @@ class Footer extends ImmutablePureComponent {
 
   handleReblogClick = e => {
     const { dispatch, status } = this.props;
-
-    if (status.get('reblogged')) {
-      dispatch(unreblog(status));
-    } else if ((e && e.shiftKey) || !boostModal) {
-      this._performReblog(status);
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      if (status.get('reblogged')) {
+        dispatch(unreblog(status));
+      } else if ((e && e.shiftKey) || !boostModal) {
+        this._performReblog(status);
+      } else {
+        dispatch(initBoostModal({ status, onReblog: this._performReblog }));
+      }
     } else {
-      dispatch(initBoostModal({ status, onReblog: this._performReblog }));
+      dispatch(openModal('INTERACTION', {
+        type: 'reblog',
+        accountId: status.getIn(['account', 'id']),
+        url: status.get('url'),
+      }));
     }
   };
 
diff --git a/app/javascript/mastodon/features/status/components/action_bar.js b/app/javascript/mastodon/features/status/components/action_bar.js
index 50bda69f87..2e240c4147 100644
--- a/app/javascript/mastodon/features/status/components/action_bar.js
+++ b/app/javascript/mastodon/features/status/components/action_bar.js
@@ -194,6 +194,7 @@ class ActionBar extends React.PureComponent {
 
   render () {
     const { status, relationship, intl } = this.props;
+    const { signedIn, permissions } = this.context.identity;
 
     const publicStatus       = ['public', 'unlisted'].includes(status.get('visibility'));
     const pinnableStatus     = ['public', 'unlisted', 'private'].includes(status.get('visibility'));
@@ -250,7 +251,7 @@ class ActionBar extends React.PureComponent {
         }
       }
 
-      if ((this.context.identity.permissions & PERMISSION_MANAGE_USERS) === PERMISSION_MANAGE_USERS) {
+      if ((permissions & PERMISSION_MANAGE_USERS) === PERMISSION_MANAGE_USERS) {
         menu.push(null);
         menu.push({ text: intl.formatMessage(messages.admin_account, { name: status.getIn(['account', 'username']) }), href: `/admin/accounts/${status.getIn(['account', 'id'])}` });
         menu.push({ text: intl.formatMessage(messages.admin_status), href: `/admin/accounts/${status.getIn(['account', 'id'])}/statuses?id=${status.get('id')}` });
@@ -287,10 +288,10 @@ class ActionBar extends React.PureComponent {
         <div className='detailed-status__button' ><IconButton className={classNames({ reblogPrivate })} disabled={!publicStatus && !reblogPrivate} active={status.get('reblogged')} title={reblogTitle} icon='retweet' onClick={this.handleReblogClick} /></div>
         <div className='detailed-status__button'><IconButton className='star-icon' animate active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} /></div>
         {shareButton}
-        <div className='detailed-status__button'><IconButton className='bookmark-icon' active={status.get('bookmarked')} title={intl.formatMessage(messages.bookmark)} icon='bookmark' onClick={this.handleBookmarkClick} /></div>
+        <div className='detailed-status__button'><IconButton className='bookmark-icon' disabled={!signedIn} active={status.get('bookmarked')} title={intl.formatMessage(messages.bookmark)} icon='bookmark' onClick={this.handleBookmarkClick} /></div>
 
         <div className='detailed-status__action-bar-dropdown'>
-          <DropdownMenuContainer size={18} icon='ellipsis-h' status={status} items={menu} direction='left' title={intl.formatMessage(messages.more)} />
+          <DropdownMenuContainer size={18} icon='ellipsis-h' disabled={!signedIn} status={status} items={menu} direction='left' title={intl.formatMessage(messages.more)} />
         </div>
       </div>
     );
diff --git a/app/javascript/mastodon/features/status/index.js b/app/javascript/mastodon/features/status/index.js
index 748dc7a927..3d238e7ee1 100644
--- a/app/javascript/mastodon/features/status/index.js
+++ b/app/javascript/mastodon/features/status/index.js
@@ -180,6 +180,7 @@ class Status extends ImmutablePureComponent {
 
   static contextTypes = {
     router: PropTypes.object,
+    identity: PropTypes.object,
   };
 
   static propTypes = {
@@ -228,10 +229,21 @@ class Status extends ImmutablePureComponent {
   }
 
   handleFavouriteClick = (status) => {
-    if (status.get('favourited')) {
-      this.props.dispatch(unfavourite(status));
+    const { dispatch } = this.props;
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      if (status.get('favourited')) {
+        dispatch(unfavourite(status));
+      } else {
+        dispatch(favourite(status));
+      }
     } else {
-      this.props.dispatch(favourite(status));
+      dispatch(openModal('INTERACTION', {
+        type: 'favourite',
+        accountId: status.getIn(['account', 'id']),
+        url: status.get('url'),
+      }));
     }
   }
 
@@ -244,15 +256,25 @@ class Status extends ImmutablePureComponent {
   }
 
   handleReplyClick = (status) => {
-    let { askReplyConfirmation, dispatch, intl } = this.props;
-    if (askReplyConfirmation) {
-      dispatch(openModal('CONFIRM', {
-        message: intl.formatMessage(messages.replyMessage),
-        confirm: intl.formatMessage(messages.replyConfirm),
-        onConfirm: () => dispatch(replyCompose(status, this.context.router.history)),
-      }));
+    const { askReplyConfirmation, dispatch, intl } = this.props;
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      if (askReplyConfirmation) {
+        dispatch(openModal('CONFIRM', {
+          message: intl.formatMessage(messages.replyMessage),
+          confirm: intl.formatMessage(messages.replyConfirm),
+          onConfirm: () => dispatch(replyCompose(status, this.context.router.history)),
+        }));
+      } else {
+        dispatch(replyCompose(status, this.context.router.history));
+      }
     } else {
-      dispatch(replyCompose(status, this.context.router.history));
+      dispatch(openModal('INTERACTION', {
+        type: 'reply',
+        accountId: status.getIn(['account', 'id']),
+        url: status.get('url'),
+      }));
     }
   }
 
@@ -261,14 +283,25 @@ class Status extends ImmutablePureComponent {
   }
 
   handleReblogClick = (status, e) => {
-    if (status.get('reblogged')) {
-      this.props.dispatch(unreblog(status));
-    } else {
-      if ((e && e.shiftKey) || !boostModal) {
-        this.handleModalReblog(status);
+    const { dispatch } = this.props;
+    const { signedIn } = this.context.identity;
+
+    if (signedIn) {
+      if (status.get('reblogged')) {
+        dispatch(unreblog(status));
       } else {
-        this.props.dispatch(initBoostModal({ status, onReblog: this.handleModalReblog }));
+        if ((e && e.shiftKey) || !boostModal) {
+          this.handleModalReblog(status);
+        } else {
+          dispatch(initBoostModal({ status, onReblog: this.handleModalReblog }));
+        }
       }
+    } else {
+      dispatch(openModal('INTERACTION', {
+        type: 'reblog',
+        accountId: status.getIn(['account', 'id']),
+        url: status.get('url'),
+      }));
     }
   }
 
diff --git a/app/javascript/mastodon/features/ui/components/modal_root.js b/app/javascript/mastodon/features/ui/components/modal_root.js
index dfa89f2ce9..5c273ffa48 100644
--- a/app/javascript/mastodon/features/ui/components/modal_root.js
+++ b/app/javascript/mastodon/features/ui/components/modal_root.js
@@ -13,6 +13,7 @@ import AudioModal from './audio_modal';
 import ConfirmationModal from './confirmation_modal';
 import SubscribedLanguagesModal from 'mastodon/features/subscribed_languages_modal';
 import FocalPointModal from './focal_point_modal';
+import InteractionModal from 'mastodon/features/interaction_modal';
 import {
   MuteModal,
   BlockModal,
@@ -41,6 +42,7 @@ const MODAL_COMPONENTS = {
   'COMPARE_HISTORY': CompareHistoryModal,
   'FILTER': FilterModal,
   'SUBSCRIBED_LANGUAGES': () => Promise.resolve({ default: SubscribedLanguagesModal }),
+  'INTERACTION': () => Promise.resolve({ default: InteractionModal }),
 };
 
 export default class ModalRoot extends React.PureComponent {
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 491aec339b..a3dc4c637c 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -4899,6 +4899,7 @@ a.status-card.compact:hover {
   left: 0;
   width: 100%;
   height: 100%;
+  box-sizing: border-box;
   display: flex;
   flex-direction: column;
   align-items: center;
@@ -8105,3 +8106,123 @@ noscript {
     margin: 10px 0;
   }
 }
+
+.interaction-modal {
+  max-width: 90vw;
+  width: 600px;
+  background: $ui-base-color;
+  border-radius: 8px;
+  overflow: hidden;
+  position: relative;
+  display: block;
+  padding: 20px;
+
+  h3 {
+    font-size: 22px;
+    line-height: 33px;
+    font-weight: 700;
+    text-align: center;
+  }
+
+  &__icon {
+    color: $highlight-text-color;
+    margin: 0 5px;
+  }
+
+  &__lead {
+    padding: 20px;
+    text-align: center;
+
+    h3 {
+      margin-bottom: 15px;
+    }
+
+    p {
+      font-size: 17px;
+      line-height: 22px;
+      color: $darker-text-color;
+    }
+  }
+
+  &__choices {
+    display: flex;
+
+    &__choice {
+      flex: 0 0 auto;
+      width: 50%;
+      box-sizing: border-box;
+      padding: 20px;
+
+      h3 {
+        margin-bottom: 20px;
+      }
+
+      p {
+        color: $darker-text-color;
+        margin-bottom: 20px;
+      }
+
+      .button {
+        margin-bottom: 10px;
+
+        &:last-child {
+          margin-bottom: 0;
+        }
+      }
+    }
+  }
+
+  @media screen and (max-width: $no-gap-breakpoint - 1px) {
+    &__choices {
+      display: block;
+
+      &__choice {
+        width: auto;
+        margin-bottom: 20px;
+      }
+    }
+  }
+}
+
+.copypaste {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+
+  input {
+    display: block;
+    font-family: inherit;
+    background: darken($ui-base-color, 8%);
+    border: 1px solid $highlight-text-color;
+    color: $darker-text-color;
+    border-radius: 4px;
+    padding: 6px 9px;
+    line-height: 22px;
+    font-size: 14px;
+    transition: border-color 300ms linear;
+    flex: 1 1 auto;
+    overflow: hidden;
+
+    &:focus {
+      outline: 0;
+      background: darken($ui-base-color, 4%);
+    }
+  }
+
+  .button {
+    flex: 0 0 auto;
+    transition: background 300ms linear;
+  }
+
+  &.copied {
+    input {
+      border: 1px solid $valid-value-color;
+      transition: none;
+    }
+
+    .button {
+      background: $valid-value-color;
+      transition: none;
+    }
+  }
+}