/* Journal of Personal Curiosities
   One stylesheet for the cover, every paper, and the 404 page. */

@import url("https://fonts.googleapis.com/css2?family=STIX+Two+Text:ital,wght@0,400..700;1,400..700&display=swap");

:root {
  --desk: #dcdfe3;      /* what the sheet of paper lies on */
  --sheet: #ffffff;
  --ink: #17181a;
  --quiet: #5b6068;     /* captions, dates, running head */
  --rule: #c8ccd2;
  --tint: #f0f2f5;      /* code, figure fills */
  --link: #1b3a93;      /* links, citations, controls */
  --mark: #fff3b0;      /* highlighter, for whatever you just jumped to */
  --serif: "STIX Two Text", "STIX Two", "Times New Roman", Times, serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { font-size: 112.5%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.5;
  font-variant-numeric: oldstyle-nums;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, input:focus-visible, button:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

/* ---------- The sheet ---------- */

.sheet {
  background: var(--sheet);
  max-width: 44rem;
  margin: 2.5rem auto;
  padding: 2.5rem 5.5rem 4.5rem;
  box-shadow: 0 1px 2px rgba(23, 30, 45, 0.18), 0 14px 44px rgba(23, 30, 45, 0.12);
}

.running-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  font-style: italic;
  color: var(--quiet);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.5rem;
  margin-bottom: 3.25rem;
}
.running-head a { color: inherit; }

/* ---------- Front matter ---------- */

.front { text-align: center; margin-bottom: 2rem; }

.front h1 {
  font-size: 1.95rem;
  font-weight: 400;
  line-height: 1.18;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}

.front p { text-align: center; text-indent: 0; hyphens: manual; }
.front .authors { font-size: 1.05rem; margin: 0; }
.front .affiliation { font-size: 0.85rem; font-style: italic; color: var(--quiet); margin: 0.2rem 0 0; }
.front .dates { font-size: 0.8rem; color: var(--quiet); margin: 0.9rem 0 0; }

.abstract { margin: 0 2.5rem 2.5rem; font-size: 0.9rem; }
.abstract > p:first-of-type::before { content: "Abstract. "; font-weight: 700; }
.abstract .keywords { margin-top: 0.6rem; text-indent: 0; text-align: left; }
.abstract .keywords::before { content: "Keywords: "; font-style: italic; }

/* ---------- Body ---------- */

article { counter-reset: sec fig tab eq; }

article p {
  margin: 0;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}
article p + p { text-indent: 1.5em; }

article h2 {
  font-size: 1.15rem;
  line-height: 1.3;
  margin: 2.1rem 0 0.55rem;
  counter-increment: sec;
  counter-reset: sub;
  scroll-margin-top: 1rem;
}
article h2::before { content: counter(sec) ".\2002"; }

article h3 {
  font-size: 1rem;
  margin: 1.4rem 0 0.4rem;
  counter-increment: sub;
}
article h3::before { content: counter(sec) "." counter(sub) "\2002"; }

.back h2 { counter-increment: none; }
.back h2::before { content: none; }

article ul, article ol { margin: 0.6rem 0; padding-left: 1.5em; }

blockquote {
  margin: 1rem 1.5em;
  font-size: 0.93rem;
  color: var(--quiet);
}

code { font-family: var(--mono); font-size: 0.8em; background: var(--tint); padding: 0.08em 0.3em; border-radius: 3px; }
pre {
  background: var(--tint);
  font-size: 0.78rem;
  line-height: 1.5;
  padding: 0.9rem 1rem;
  margin: 1rem 0;
  overflow-x: auto;
  border-radius: 3px;
}
pre code { background: none; padding: 0; font-size: inherit; }

/* ---------- Figures and tables ---------- */

figure {
  margin: 1.9rem 0;
  counter-increment: fig;
  scroll-margin-top: 1rem;
}
figure.wide { margin-inline: -3rem; }
figure img, figure svg, figure video, figure canvas { display: block; max-width: 100%; height: auto; margin-inline: auto; }

figcaption { font-size: 0.85rem; line-height: 1.4; margin-top: 0.75rem; color: var(--ink); }
figcaption::before { content: "Figure " counter(fig) ".\2002"; font-weight: 700; }

figure.table { counter-increment: tab; }
figure.table figcaption { margin: 0 0 0.6rem; }
figure.table figcaption::before { content: "Table " counter(tab) ".\2002"; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}
th, td { text-align: left; vertical-align: top; padding: 0.35rem 0.9rem 0.35rem 0; }
th { font-weight: 700; border-bottom: 1px solid var(--ink); }

/* Controls inside interactive figures */
.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}
.controls input[type="range"] { accent-color: var(--link); flex: 1 1 12rem; min-width: 0; }
.controls output { font-variant-numeric: tabular-nums lining-nums; }

/* ---------- Equations ---------- */

.eq {
  display: flex;
  align-items: center;
  margin: 1rem 0;
  counter-increment: eq;
  scroll-margin-top: 1rem;
}
.eq::before { content: ""; width: 2.5em; }
.eq::after { content: "(" counter(eq) ")"; width: 2.5em; text-align: right; }
.eq > * { flex: 1; text-align: center; font-size: 1.08rem; }
.eq var, p var { font-style: italic; }
.frac { display: inline-flex; flex-direction: column; vertical-align: middle; text-align: center; }
.frac > :first-child { border-bottom: 1px solid var(--ink); padding: 0 0.3em; }

/* ---------- Footnotes ---------- */

/* Before journal.js runs (or if it never does), a note reads inline. */
span.fn { font-size: 0.85em; color: var(--quiet); }
span.fn::before { content: " ["; }
span.fn::after { content: "]"; }

sup.fn-ref { font-size: 0.7em; line-height: 0; font-variant-numeric: lining-nums; padding-left: 0.1em; }

.footnotes { margin-top: 2.75rem; font-size: 0.82rem; }
.footnotes::before { content: ""; display: block; width: 8rem; border-top: 1px solid var(--ink); margin-bottom: 0.7rem; }
.footnotes ol { margin: 0; padding-left: 1.4em; }
.footnotes li { margin-bottom: 0.3rem; }
.fn-back { padding-left: 0.3em; }

/* ---------- References and citation ---------- */

.references ol { list-style: none; counter-reset: ref; padding-left: 2.3em; margin: 0; font-size: 0.85rem; }
.references li { counter-increment: ref; position: relative; margin-bottom: 0.4rem; }
.references li::before { content: "[" counter(ref) "]"; position: absolute; left: -2.3em; font-variant-numeric: lining-nums; }

.cite-as { margin-top: 2.5rem; font-size: 0.82rem; color: var(--quiet); border-top: 1px solid var(--rule); padding-top: 0.8rem; }
.cite-as p { text-align: left; hyphens: manual; }

li:target, .eq:target { background: var(--mark); box-shadow: 0 0 0 0.25rem var(--mark); }
li { scroll-margin-top: 2rem; }

/* ---------- Cover (the home page) ---------- */

.masthead { text-align: center; padding: 2.5rem 0 2.25rem; text-wrap: balance; }
.masthead h1 {
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
}
.masthead h1 small { display: block; font-size: 1.15rem; font-style: italic; letter-spacing: 0; margin-bottom: 0.5rem; }
.masthead p { margin: 1.25rem auto 0; max-width: 26rem; font-style: italic; color: var(--quiet); }

.imprint {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 0.45rem 0;
}

.contents h2 { font-size: 1rem; margin: 2.25rem 0 0.75rem; }
.contents ol { list-style: none; margin: 0; padding: 0; }
.contents li { margin-bottom: 1rem; }
.contents .entry { display: flex; align-items: baseline; }
.contents .entry a { font-size: 1.1rem; }
.contents .dots { flex: 1; min-width: 1.5rem; border-bottom: 1px dotted var(--quiet); margin: 0 0.5em; transform: translateY(-0.28em); }
.contents .when { font-size: 0.85rem; color: var(--quiet); white-space: nowrap; }
.contents .summary { margin: 0.1rem 0 0; font-size: 0.87rem; font-style: italic; color: var(--quiet); max-width: 30rem; }

.colophon { margin-top: 3.5rem; font-size: 0.8rem; color: var(--quiet); border-top: 1px solid var(--rule); padding-top: 0.8rem; }
.colophon p { margin: 0; }

/* ---------- Small screens: the sheet becomes the screen ---------- */

@media (max-width: 46rem) {
  html { font-size: 106.25%; }
  body { background: var(--sheet); }
  .sheet { margin: 0; padding: 1.25rem 1.2rem 3rem; box-shadow: none; }
  .running-head { margin-bottom: 2.25rem; }
  .front h1 { font-size: 1.6rem; }
  .abstract { margin-inline: 0.75rem; }
  article p { text-align: left; }
  figure.wide { margin-inline: 0; }
  .masthead { padding: 1.5rem 0 1.75rem; }
  .masthead h1 { font-size: 2.2rem; }
  .contents .dots { display: none; }
  .contents .entry { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- Print: it is a paper, after all ---------- */

@media print {
  html { font-size: 11pt; }
  body { background: none; }
  .sheet { margin: 0; padding: 0; max-width: none; box-shadow: none; }
  a { color: inherit; }
  .controls, .fn-back { display: none; }
  figure, pre, table { break-inside: avoid; }
  h2, h3 { break-after: avoid; }
}