/* Footnotes and historical notes (\marginhistory). On wide screens both sit in the
right margin, level with the text they belong to (Tufte-style sidenotes), and so do the
figure captions; on narrow screens the footnotes are listed at the end of the paper. */

/* ---------------------------------------------------------------- footnotes */
sup.fnref { line-height: 0; font-size: 0.75em; }
sup.fnref a { color: var(--ref); padding: 0 0.1em; }

.footnotes { margin-top: 3rem; }
.footnotes::before {
  content: "";
  display: block;
  width: 8rem;
  border-top: 1px solid var(--rule);
  margin-bottom: 0.8rem;
}
.footnotes ol { list-style: none; margin: 0; padding: 0; }
.footnotes li { position: relative; padding-left: 1.6em; }
.fn-label { position: absolute; left: 0; }
.fnback { color: var(--ref); }

/* margin notes, a la Tufte: on wide screens the footnote sits in the right margin,
   level with its reference, and the list at the end is hidden */
.sidenote { display: none; }
@media (min-width: 1380px) {
  .sidenote {
    display: block;
    float: right;
    clear: right;
    position: relative;
    width: var(--margin);
    margin-right: calc(-1 * (var(--margin) + var(--margin-gap)));
    margin-top: 0.15rem;
    font-style: normal;
    text-align: left;
    text-indent: 0;
    hyphens: manual;
    -webkit-hyphens: manual;
  }
  .sidenote .fn-label { position: static; margin-right: 0.15em; }
  .footnotes { display: none; }
  sup.fnref a { pointer-events: none; }
}

/* ---------------------------------------------------------------- historical notes */
/* \marginhistory: portraits (round, as on the title screen) above a short note in Charter.
   On wide screens it sits in the right margin, level with what follows it, like the footnotes;
   otherwise it is a small aside in the text, portraits beside the note */
/* all the text in the margin (historical notes, footnotes, figure captions) looks the same,
   in Charter, smaller and grey, and so do the footnotes and captions on narrow screens */
.margin-history, .sidenote, .footnotes, .applet figcaption {
  font-family: "Charter", "NewCM10", Georgia, serif;
  font-size: 0.78rem;
  line-height: 1.38;
  color: var(--muted);
}
.mh-portraits { --size: 5.5rem; display: flex; justify-content: center; gap: 0.7rem; }
.mh-portraits figure { flex: none; width: var(--size); margin: 0; text-align: center; }
.mh-portraits img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: grayscale(1);
}
:root[data-theme="dark"] .mh-portraits img { filter: grayscale(1) brightness(0.9) contrast(0.95); }
.mh-portraits figcaption {
  margin: 0.3em -1.5em 0;  /* a name wider than its portrait stays centered under it */
  font-variant: small-caps;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.paper .margin-history p {
  margin-top: 0.6em;
  text-align: left;
  text-indent: 0;
  hyphens: manual;
  -webkit-hyphens: manual;
  overflow: visible;
}
@media (min-width: 1380px) {
  .margin-history {
    float: right;
    clear: right;
    width: var(--margin);
    margin-right: calc(-1 * (var(--margin) + var(--margin-gap)));
    margin-top: 0.2rem;
  }
}
@media (max-width: 1379px) {
  .margin-history {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 30rem;
    margin: 1.1em auto;
  }
  .mh-portraits { --size: 4.4rem; flex: none; }
  .paper .margin-history p { margin-top: 0; }
}
@media (max-width: 480px) {
  .mh-portraits { --size: 3.5rem; gap: 0.5rem; }
}