Redesign forms, verify link ownership with rel="me" (#8703)

* Verify link ownership with rel="me"

* Add explanation about verification to UI

* Perform link verifications

* Add click-to-copy widget for verification HTML

* Redesign edit profile page

* Redesign forms

* Improve responsive design of settings pages

* Restore landing page sign-up form

* Fix typo

* Support <link> tags, add spec

* Fix links not being verified on first discovery and passive updates

9 files changed, 367 insertions, 165 deletions

diff --git a/app/javascript/mastodon/features/account/components/header.js b/app/javascript/mastodon/features/account/components/header.js
index e49758b04..11ae58905 100644
--- a/app/javascript/mastodon/features/account/components/header.js
+++ b/app/javascript/mastodon/features/account/components/header.js
@@ -15,8 +15,18 @@ const messages = defineMessages({
   requested: { id: 'account.requested', defaultMessage: 'Awaiting approval. Click to cancel follow request' },
   unblock: { id: 'account.unblock', defaultMessage: 'Unblock @{name}' },
   edit_profile: { id: 'account.edit_profile', defaultMessage: 'Edit profile' },
+  linkVerifiedOn: { id: 'account.link_verified_on', defaultMessage: 'Ownership of this link was checked on {date}' },
 });
 
+const dateFormatOptions = {
+  month: 'short',
+  day: 'numeric',
+  year: 'numeric',
+  hour12: false,
+  hour: '2-digit',
+  minute: '2-digit',
+};
+
 class Avatar extends ImmutablePureComponent {
 
   static propTypes = {
@@ -163,7 +173,10 @@ class Header extends ImmutablePureComponent {
               {fields.map((pair, i) => (
                 <dl key={i}>
                   <dt dangerouslySetInnerHTML={{ __html: pair.get('name_emojified') }} title={pair.get('name')} />
-                  <dd dangerouslySetInnerHTML={{ __html: pair.get('value_emojified') }} title={pair.get('value_plain')} />
+
+                  <dd className={pair.get('verified_at') && 'verified'} title={pair.get('value_plain')}>
+                    {pair.get('verified_at') && <span title={intl.formatMessage(messages.linkVerifiedOn, { date: intl.formatDate(pair.get('verified_at'), dateFormatOptions) })}><i className='fa fa-check verified__mark' /></span>} <span dangerouslySetInnerHTML={{ __html: pair.get('value_emojified') }} />
+                  </dd>
                 </dl>
               ))}
             </div>
diff --git a/app/javascript/packs/public.js b/app/javascript/packs/public.js
index c83e2889a..22a8643d9 100644
--- a/app/javascript/packs/public.js
+++ b/app/javascript/packs/public.js
@@ -68,6 +68,7 @@ function main() {
     });
 
     const reactComponents = document.querySelectorAll('[data-component]');
+
     if (reactComponents.length > 0) {
       import(/* webpackChunkName: "containers/media_container" */ '../mastodon/containers/media_container')
         .then(({ default: MediaContainer }) => {
@@ -80,6 +81,7 @@ function main() {
     }
 
     const parallaxComponents = document.querySelectorAll('.parallax');
+
     if (parallaxComponents.length > 0 ) {
       new Rellax('.parallax', { speed: -1 });
     }
@@ -87,6 +89,7 @@ function main() {
     const history = createHistory();
     const detailedStatuses = document.querySelectorAll('.public-layout .detailed-status');
     const location = history.location;
+
     if (detailedStatuses.length === 1 && (!location.state || !location.state.scrolledToDetailedStatus)) {
       detailedStatuses[0].scrollIntoView();
       history.replace(location.pathname, { ...location.state, scrolledToDetailedStatus: true });
@@ -175,6 +178,30 @@ function main() {
       lock.style.display = 'none';
     }
   });
+
+  delegate(document, '.input-copy input', 'click', ({ target }) => {
+    target.select();
+  });
+
+  delegate(document, '.input-copy button', 'click', ({ target }) => {
+    const input = target.parentNode.querySelector('input');
+
+    input.focus();
+    input.select();
+
+    try {
+      if (document.execCommand('copy')) {
+        input.blur();
+        target.parentNode.classList.add('copied');
+
+        setTimeout(() => {
+          target.parentNode.classList.remove('copied');
+        }, 700);
+      }
+    } catch (err) {
+      console.error(err);
+    }
+  });
 }
 
 loadPolyfills().then(main).catch(error => {
diff --git a/app/javascript/styles/mastodon/accounts.scss b/app/javascript/styles/mastodon/accounts.scss
index c27bc0df3..06effbdb2 100644
--- a/app/javascript/styles/mastodon/accounts.scss
+++ b/app/javascript/styles/mastodon/accounts.scss
@@ -265,6 +265,20 @@
     }
   }
 
+  .verified {
+    border: 1px solid rgba($valid-value-color, 0.5);
+    background: rgba($valid-value-color, 0.25);
+
+    a {
+      color: $valid-value-color;
+      font-weight: 500;
+    }
+
+    &__mark {
+      color: $valid-value-color;
+    }
+  }
+
   dl:last-child {
     border-bottom: 0;
   }
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index 7d359921a..9dfd89dc2 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -1,3 +1,5 @@
+$no-columns-breakpoint: 600px;
+
 .admin-wrapper {
   display: flex;
   justify-content: center;
@@ -24,12 +26,22 @@
       height: 100px;
     }
 
+    @media screen and (max-width: $no-columns-breakpoint) {
+      & > a:first-child {
+        display: none;
+      }
+    }
+
     ul {
       list-style: none;
       border-radius: 4px 0 0 4px;
       overflow: hidden;
       margin-bottom: 20px;
 
+      @media screen and (max-width: $no-columns-breakpoint) {
+        margin-bottom: 0;
+      }
+
       a {
         display: block;
         padding: 15px;
@@ -62,20 +74,24 @@
         a {
           border: 0;
           padding: 15px 35px;
+        }
+      }
 
-          &.selected {
-            color: $primary-text-color;
-            background-color: $ui-highlight-color;
-            border-bottom: 0;
-            border-radius: 0;
+      .simple-navigation-active-leaf a {
+        color: $primary-text-color;
+        background-color: $ui-highlight-color;
+        border-bottom: 0;
+        border-radius: 0;
 
-            &:hover {
-              background-color: lighten($ui-highlight-color, 5%);
-            }
-          }
+        &:hover {
+          background-color: lighten($ui-highlight-color, 5%);
         }
       }
     }
+
+    & > ul > .simple-navigation-active-leaf a {
+      border-radius: 4px 0 0 4px;
+    }
   }
 
   .content-wrapper {
@@ -89,11 +105,19 @@
     padding-top: 60px;
     padding-left: 25px;
 
+    @media screen and (max-width: $no-columns-breakpoint) {
+      max-width: none;
+      padding: 15px;
+      padding-top: 30px;
+    }
+
     h2 {
       color: $secondary-text-color;
       font-size: 24px;
       line-height: 28px;
       font-weight: 400;
+      padding-bottom: 40px;
+      border-bottom: 1px solid lighten($ui-base-color, 8%);
       margin-bottom: 40px;
     }
 
@@ -108,7 +132,7 @@
     h4 {
       text-transform: uppercase;
       font-size: 13px;
-      font-weight: 500;
+      font-weight: 700;
       color: $darker-text-color;
       padding-bottom: 8px;
       margin-bottom: 8px;
@@ -122,6 +146,11 @@
       font-weight: 400;
     }
 
+    .fields-group h6 {
+      color: $primary-text-color;
+      font-weight: 500;
+    }
+
     & > p {
       font-size: 14px;
       line-height: 18px;
@@ -172,30 +201,7 @@
     }
   }
 
-  .simple_form {
-    max-width: 400px;
-
-    &.edit_user,
-    &.new_form_admin_settings,
-    &.new_form_two_factor_confirmation,
-    &.new_form_delete_confirmation,
-    &.new_import,
-    &.new_domain_block,
-    &.edit_domain_block {
-      max-width: none;
-    }
-
-    .form_two_factor_confirmation_code,
-    .form_delete_confirmation_password {
-      max-width: 400px;
-    }
-
-    .actions {
-      max-width: 400px;
-    }
-  }
-
-  @media screen and (max-width: 600px) {
+  @media screen and (max-width: $no-columns-breakpoint) {
     display: block;
     overflow-y: auto;
     -webkit-overflow-scrolling: touch;
@@ -209,16 +215,8 @@
 
     .sidebar {
       width: 100%;
-      padding: 10px 0;
+      padding: 0;
       height: auto;
-
-      .logo {
-        margin: 20px auto;
-      }
-    }
-
-    .content {
-      padding-top: 20px;
     }
   }
 }
diff --git a/app/javascript/styles/mastodon/basics.scss b/app/javascript/styles/mastodon/basics.scss
index 7a6a1c490..3bbb31e6e 100644
--- a/app/javascript/styles/mastodon/basics.scss
+++ b/app/javascript/styles/mastodon/basics.scss
@@ -1,3 +1,10 @@
+@function hex-color($color) {
+  @if type-of($color) == 'color' {
+    $color: str-slice(ie-hex-str($color), 4);
+  }
+  @return '%23' + unquote($color)
+}
+
 body {
   font-family: 'mastodon-font-sans-serif', sans-serif;
   background: darken($ui-base-color, 8%);
diff --git a/app/javascript/styles/mastodon/boost.scss b/app/javascript/styles/mastodon/boost.scss
index 8e11cb596..5a6d6ae40 100644
--- a/app/javascript/styles/mastodon/boost.scss
+++ b/app/javascript/styles/mastodon/boost.scss
@@ -1,10 +1,3 @@
-@function hex-color($color) {
-  @if type-of($color) == 'color' {
-    $color: str-slice(ie-hex-str($color), 4);
-  }
-  @return '%23' + unquote($color)
-}
-
 button.icon-button i.fa-retweet {
   background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='209'><path d='M4.97 3.16c-.1.03-.17.1-.22.18L.8 8.24c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77L5.5 3.35c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.02-2.4.02H7.1l2.32 2.85.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color($action-button-color)}' stroke-width='0'/><path d='M7.78 19.66c-.24.02-.44.25-.44.5v2.46h-.06c-1.08 0-1.86-.03-2.4-.03-1.64 0-1.25.43-1.25 3.65v4.47c0 4.26-.56 3.62 3.65 3.62H8.5l-1.3-1.06c-.1-.08-.18-.2-.2-.3-.02-.17.06-.35.2-.45l1.33-1.1H7.28c-.44 0-.72-.3-.72-.7v-4.48c0-.44.28-.72.72-.72h.06v2.5c0 .38.54.63.82.38l4.9-3.93c.25-.18.25-.6 0-.78l-4.9-3.92c-.1-.1-.24-.14-.38-.12zm9.34 2.93c-.54-.02-1.3.02-2.4.02h-1.25l1.3 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3.62h7.94l-2.35-2.9h-5.6c-.43 0-.7-.3-.7-.72v-2.3h2.5c.38.03.66-.54.4-.83l-3.97-4.9c-.1-.13-.23-.2-.38-.2zm12 .1c-.55-.02-1.32.03-2.4.03H6.83l2.35 2.9h5.52c.42 0 .72.28.72.72v2.34h-2.6c-.3.1-.43.53-.2.78l3.92 4.9c.18.24.6.24.78 0l3.94-4.9c.22-.3-.02-.78-.37-.8H18.4v-2.33c0-3.15.4-3.62-1.25-3.66zM4.97 193.16c-.1.03-.17.1-.22.18l-3.94 4.9c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77l-3.96-4.9c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.03-2.4.03H7.1l2.32 2.84.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color($highlight-text-color)}' stroke-width='0'/></svg>");
 
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 048563336..9421523bd 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -5363,9 +5363,11 @@ noscript {
   overflow: hidden;
   margin: 20px -10px -20px;
   border-bottom: 0;
+  border-top: 0;
 
   dl {
-    border-top: 1px solid lighten($ui-base-color, 8%);
+    border-top: 1px solid lighten($ui-base-color, 4%);
+    border-bottom: 0;
     display: flex;
   }
 
@@ -5392,6 +5394,11 @@ noscript {
     flex: 1 1 auto;
     color: $primary-text-color;
     background: $ui-base-color;
+
+    &.verified {
+      border: 1px solid rgba($valid-value-color, 0.5);
+      background: rgba($valid-value-color, 0.25);
+    }
   }
 }
 
diff --git a/app/javascript/styles/mastodon/containers.scss b/app/javascript/styles/mastodon/containers.scss
index 2c2ce5d3b..47582f323 100644
--- a/app/javascript/styles/mastodon/containers.scss
+++ b/app/javascript/styles/mastodon/containers.scss
@@ -718,6 +718,14 @@
       a {
         color: lighten($ui-highlight-color, 8%);
       }
+
+      dl:first-child .verified {
+        border-radius: 0 4px 0 0;
+      }
+
+      .verified a {
+        color: $valid-value-color;
+      }
     }
 
     .account__header__content {
diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index 144b4a519..cbd3de94c 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -1,3 +1,5 @@
+$no-columns-breakpoint: 600px;
+
 code {
   font-family: 'mastodon-font-monospace', monospace;
   font-weight: 400;
@@ -13,6 +15,60 @@ code {
   .input {
     margin-bottom: 15px;
     overflow: hidden;
+
+    &.hidden {
+      margin: 0;
+    }
+
+    &.radio_buttons {
+      .radio {
+        margin-bottom: 15px;
+
+        &:last-child {
+          margin-bottom: 0;
+        }
+      }
+
+      .radio > label {
+        position: relative;
+        padding-left: 28px;
+
+        input {
+          position: absolute;
+          top: -2px;
+          left: 0;
+        }
+      }
+    }
+
+    &.boolean {
+      position: relative;
+      margin-bottom: 0;
+
+      .label_input > label {
+        font-family: inherit;
+        font-size: 14px;
+        padding-top: 5px;
+        color: $primary-text-color;
+        display: block;
+        width: auto;
+      }
+
+      .label_input,
+      .hint {
+        padding-left: 28px;
+      }
+
+      .label_input__wrapper {
+        position: static;
+      }
+
+      label.checkbox {
+        position: absolute;
+        top: 2px;
+        left: 0;
+      }
+    }
   }
 
   .row {
@@ -27,9 +83,22 @@ code {
     }
   }
 
+  .hint {
+    color: $darker-text-color;
+
+    a {
+      color: $highlight-text-color;
+    }
+
+    code {
+      border-radius: 3px;
+      padding: 0.2em 0.4em;
+      background: darken($ui-base-color, 12%);
+    }
+  }
+
   span.hint {
     display: block;
-    color: $darker-text-color;
     font-size: 12px;
     margin-top: 4px;
   }
@@ -44,17 +113,6 @@ code {
       line-height: 18px;
       margin-top: 15px;
       margin-bottom: 0;
-      color: $darker-text-color;
-
-      a {
-        color: $highlight-text-color;
-      }
-    }
-
-    code {
-      border-radius: 3px;
-      padding: 0.2em 0.4em;
-      background: darken($ui-base-color, 12%);
     }
   }
 
@@ -72,87 +130,60 @@ code {
     }
   }
 
-  .label_input {
-    display: flex;
+  .input.with_floating_label {
+    .label_input {
+      display: flex;
 
-    label {
-      flex: 0 0 auto;
+      & > label {
+        font-family: inherit;
+        font-size: 14px;
+        color: $primary-text-color;
+        font-weight: 500;
+        min-width: 150px;
+        flex: 0 0 auto;
+      }
+
+      input,
+      select {
+        flex: 1 1 auto;
+      }
     }
 
-    input {
-      flex: 1 1 auto;
+    &.select .hint {
+      margin-top: 6px;
+      margin-left: 150px;
     }
   }
 
   .input.with_label {
-    padding: 15px 0;
-    margin-bottom: 0;
-
-    .label_input {
-      flex-wrap: wrap;
-      align-items: flex-start;
-    }
-
-    &.file .label_input {
-      flex-wrap: nowrap;
-    }
-
-    &.select .label_input {
-      align-items: initial;
-    }
-
     .label_input > label {
       font-family: inherit;
-      font-size: 16px;
+      font-size: 14px;
       color: $primary-text-color;
       display: block;
-      padding-top: 5px;
-      margin-bottom: 5px;
-      flex: 1;
-      min-width: 150px;
+      margin-bottom: 8px;
       word-wrap: break-word;
+      font-weight: 500;
+    }
 
-      &.select {
-        flex: 0;
-      }
-
-      & ~ * {
-        margin-left: 10px;
-      }
+    .hint {
+      margin-top: 6px;
     }
 
     ul {
       flex: 390px;
     }
-
-    &.boolean {
-      padding: initial;
-      margin-bottom: initial;
-
-      .label_input > label {
-        font-family: inherit;
-        font-size: 14px;
-        color: $primary-text-color;
-        display: block;
-        width: auto;
-      }
-
-      label.checkbox {
-        position: relative;
-        padding-left: 25px;
-        flex: 1 1 auto;
-      }
-    }
   }
 
   .input.with_block_label {
-    padding-top: 15px;
+    max-width: none;
 
     & > label {
       font-family: inherit;
       font-size: 16px;
       color: $primary-text-color;
       display: block;
+      font-weight: 500;
       padding-top: 5px;
     }
 
@@ -165,49 +196,70 @@ code {
     }
   }
 
+  .required abbr {
+    text-decoration: none;
+    color: lighten($error-value-color, 12%);
+  }
+
   .fields-group {
     margin-bottom: 25px;
-  }
 
-  .input.radio_buttons .radio label {
-    margin-bottom: 5px;
-    font-family: inherit;
-    font-size: 14px;
-    color: $primary-text-color;
-    display: block;
-    width: auto;
+    .input:last-child {
+      margin-bottom: 0;
+    }
   }
 
-  .input.boolean {
-    margin-bottom: 5px;
+  .fields-row {
+    display: flex;
+    margin: 0 -10px;
+    padding-top: 5px;
+    margin-bottom: 25px;
 
-    label {
-      font-family: inherit;
-      font-size: 14px;
-      color: $primary-text-color;
-      display: block;
-      width: auto;
+    .input {
+      max-width: none;
     }
 
-    label.checkbox {
-      position: relative;
-      padding-left: 25px;
+    &__column {
+      box-sizing: border-box;
+      padding: 0 10px;
       flex: 1 1 auto;
+      min-height: 1px;
+
+      &-6 {
+        max-width: 50%;
+      }
     }
 
-    input[type=checkbox] {
-      position: absolute;
-      left: 0;
-      top: 5px;
-      margin: 0;
+    .fields-group:last-child,
+    .fields-row__column.fields-group {
+      margin-bottom: 0;
     }
 
-    .hint {
-      padding-left: 25px;
-      margin-left: 0;
+    @media screen and (max-width: $no-columns-breakpoint) {
+      display: block;
+      margin-bottom: 0;
+
+      &__column {
+        max-width: none;
+      }
+
+      .fields-group:last-child,
+      .fields-row__column.fields-group,
+      .fields-row__column {
+        margin-bottom: 25px;
+      }
     }
   }
 
+  .input.radio_buttons .radio label {
+    margin-bottom: 5px;
+    font-family: inherit;
+    font-size: 14px;
+    color: $primary-text-color;
+    display: block;
+    width: auto;
+  }
+
   .check_boxes {
     .checkbox {
       label {
@@ -236,12 +288,7 @@ code {
   input[type=email],
   input[type=password],
   textarea {
-    background: transparent;
     box-sizing: border-box;
-    border: 0;
-    border-bottom: 2px solid $ui-primary-color;
-    border-radius: 2px 2px 0 0;
-    padding: 7px 4px;
     font-size: 16px;
     color: $primary-text-color;
     display: block;
@@ -249,23 +296,31 @@ code {
     outline: 0;
     font-family: inherit;
     resize: vertical;
+    background: darken($ui-base-color, 10%);
+    border: 1px solid darken($ui-base-color, 14%);
+    border-radius: 4px;
+    padding: 10px;
 
     &:invalid {
       box-shadow: none;
     }
 
     &:focus:invalid {
-      border-bottom-color: lighten($error-red, 12%);
+      border-color: lighten($error-red, 12%);
     }
 
     &:required:valid {
-      border-bottom-color: $valid-value-color;
+      border-color: $valid-value-color;
+    }
+
+    &:hover {
+      border-color: darken($ui-base-color, 20%);
     }
 
     &:active,
     &:focus {
-      border-bottom-color: $highlight-text-color;
-      background: rgba($base-overlay-background, 0.1);
+      border-color: $highlight-text-color;
+      background: darken($ui-base-color, 8%);
     }
   }
 
@@ -349,22 +404,32 @@ code {
   }
 
   select {
+    appearance: none;
+    box-sizing: border-box;
     font-size: 16px;
-    max-height: 29px;
+    color: $primary-text-color;
+    display: block;
+    width: 100%;
+    outline: 0;
+    font-family: inherit;
+    resize: vertical;
+    background: darken($ui-base-color, 10%) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14.933 18.467' height='19.698' width='15.929'><path d='M3.467 14.967l-3.393-3.5H14.86l-3.392 3.5c-1.866 1.925-3.666 3.5-4 3.5-.335 0-2.135-1.575-4-3.5zm.266-11.234L7.467 0 11.2 3.733l3.733 3.734H0l3.733-3.734z' fill='#{hex-color(lighten($ui-base-color, 12%))}'/></svg>") no-repeat right 8px center / auto 16px;
+    border: 1px solid darken($ui-base-color, 14%);
+    border-radius: 4px;
+    padding: 10px;
+    height: 41px;
   }
 
-  .input-with-append {
-    position: relative;
-
-    .input input {
-      padding-right: 142px;
+  .label_input {
+    &__wrapper {
+      position: relative;
     }
 
-    .append {
+    &__append {
       position: absolute;
-      right: 0;
-      top: 0;
-      padding: 7px 4px;
+      right: 1px;
+      top: 1px;
+      padding: 10px;
       padding-bottom: 9px;
       font-size: 16px;
       color: $dark-text-color;
@@ -383,7 +448,7 @@ code {
         right: 0;
         bottom: 1px;
         width: 5px;
-        background-image: linear-gradient(to right, rgba($ui-base-color, 0), $ui-base-color);
+        background-image: linear-gradient(to right, rgba(darken($ui-base-color, 10%), 0), darken($ui-base-color, 10%));
       }
     }
   }
@@ -459,6 +524,30 @@ code {
   }
 }
 
+.quick-nav {
+  list-style: none;
+  margin-bottom: 25px;
+  font-size: 14px;
+
+  li {
+    display: inline-block;
+    margin-right: 10px;
+  }
+
+  a {
+    color: $highlight-text-color;
+    text-transform: uppercase;
+    text-decoration: none;
+    font-weight: 700;
+
+    &:hover,
+    &:focus,
+    &:active {
+      color: lighten($highlight-text-color, 8%);
+    }
+  }
+}
+
 .oauth-prompt,
 .follow-prompt {
   margin-bottom: 30px;
@@ -632,3 +721,49 @@ code {
     font-family: 'mastodon-font-monospace', monospace;
   }
 }
+
+.input-copy {
+  background: darken($ui-base-color, 10%);
+  border: 1px solid darken($ui-base-color, 14%);
+  border-radius: 4px;
+  display: flex;
+  align-items: center;
+  padding-right: 4px;
+  position: relative;
+  top: 1px;
+  transition: border-color 300ms linear;
+
+  &__wrapper {
+    flex: 1 1 auto;
+  }
+
+  input[type=text] {
+    background: transparent;
+    border: 0;
+    padding: 10px;
+    font-size: 14px;
+    font-family: 'mastodon-font-monospace', monospace;
+  }
+
+  button {
+    flex: 0 0 auto;
+    margin: 4px;
+    text-transform: none;
+    font-weight: 400;
+    font-size: 14px;
+    padding: 7px 18px;
+    padding-bottom: 6px;
+    width: auto;
+    transition: background 300ms linear;
+  }
+
+  &.copied {
+    border-color: $valid-value-color;
+    transition: none;
+
+    button {
+      background: $valid-value-color;
+      transition: none;
+    }
+  }
+}