.message-run {
  border-radius: 0.25rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 0.25rem 0.25rem rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.own-message {
  color: var(--colour-message-run-self-text);
  background-color: var(--colour-message-run-self-bg);
  border: 1px solid var(--colour-message-run-self-border);
  margin-left: 1rem;
}

.other-message {
  color: var(--colour-message-run-other-text);
  background-color: var(--colour-message-run-other-bg);
  border: 1px solid var(--colour-message-run-other-border);
  margin-right: 1rem;
}

.message-run > .username {
  background-color: var(--colour-message-run-username-bg);
  color: var(--colour-message-run-username-text);
  display: inline-block;
  border-bottom-right-radius: 0.25rem;
  padding: 0.25rem;
  border-bottom: 1px solid var(--colour-message-run-username-border);
  border-right: 1px solid var(--colour-message-run-username-border);
}

.message.delete-armed,
.message.delete-armed:hover {
  background-color: var(--colour-warn);
}

.message {
  position: relative;
}

.message:hover {
  background-color: var(--colour-message-hover-bg);
  color: var(--colour-message-hover-text);
}

.message .handle {
  --text-size: 0.75rem;
  line-height: var(--text-size);
  font-size: var(--text-size);
  position: absolute;
  top: -0.75rem;
  right: 0.5rem;
  padding: 0.25rem;
  border-radius: 0.25rem;
  display: none;
  background-color: var(--colour-message-handle-bg);
  color: var(--colour-message-handle-text);
  border: 1px solid var(--colour-message-handle-border);
}

.message:hover .handle {
  display: inline-block;
}

.message .handle button {
  line-height: 0.35rem;
  background: none;
  border: none;
  cursor: pointer;
}

.message-body {
  max-width: 80vw;
  padding: 0 0.5rem;
  line-height: 1.2rem;

  @media (width > 640px) {
    /* 21rem is width of the nav bar in full-screen mode. */
    max-width: calc(90vw - 21rem);
  }
}

.message.unsent,
.message.deleted,
.message.unsent :link,
.message.deleted :link {
  color: var(--colour-message-run-unsent-text);
}

.message-body:empty:after {
  content: '.';
  visibility: hidden;
}

.message-body p,
.message-body ul,
.message-body ol,
.message-body pre,
.message-body h5,
.message-body h6 {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.message-body h1,
.message-body h2,
.message-body h3,
.message-body h4,
.message-body h5,
.message-body h6 {
  font-size: var(--heading-font-size);
  line-height: calc(var(--heading-font-size) * 1.2);
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
}

.message-body h1 {
  --heading-font-size: 2.25rem;
}

.message-body h2 {
  --heading-font-size: 2rem;
}

.message-body h3 {
  --heading-font-size: 1.75rem;
}

.message-body h4 {
  --heading-font-size: 1.5rem;
}

.message-body h5 {
  --heading-font-size: 1.25rem;
}

.message-body h6 {
  --heading-font-size: 1rem;
}

.message-body ul {
  list-style-type: disc;
  list-style-position: outside;
}

.message-body ol {
  list-style-type: decimal;
  list-style-position: outside;
}

.message-body ul > li,
.message-body ol > li {
  margin-left: 2rem;
}

.message-body ul > li li,
.message-body ol > li li {
  margin-left: 1rem;
}

.message-body img {
  /* dumbnail images that are bigger than the viewport */
  max-width: 100%;
}

.message-body :link,
.message-body :link:visited {
  color: var(--colour-message-run-link-text);
}

.message-body :link:hover,
.message-body :link:active {
  text-decoration: underline;
}

.message-body code {
  white-space: pre-wrap;
  border: 1px solid #312e81;
  border-radius: 0.25rem;
  padding: 0 0.2rem;
  margin: 0 0.1rem;
}

.message-body pre > code {
  white-space: none;
  border: none;
}

/* For rendered message bodies: */
.message-body blockquote {
  margin-left: 0.25rem;
  padding-left: 0.5rem;
  border-left: 2px solid grey;
  border-radius: 0.125rem;
  color: var(--colour-message-run-blockquote-text);
}

.message-body pre {
  border: 1px solid #312e81;
  border-radius: 0.25rem;
  padding: 0.25rem;
  overflow: auto;
  text-wrap: wrap;
}

.message-body code,
.message-body pre {
  font-family: 'FiraCode', monospace;
  /*
   * This puts the x-height at about the same x-height as Roboto, our body font. Determined
   * experimentally and _very_ haphazardly.
   */
  font-size: 0.95rem;
  background-color: var(--colour-message-run-code-bg);
}