/* quire — a small literary theme for Hugo.
   Layout after Edward Tufte's handouts: a narrow text column with notes in a wide right margin. */

:root {
  --paper: #fffff8;
  --ink: #1b1b1b;
  --muted: #6b6457;
  --rule: #d9d3c4;
  --accent: #7a1f1f;          /* oxblood, like sealing wax */
  --serif: "Times New Roman", Times, "Liberation Serif", "Nimbus Roman", serif;

  --text: 55%;                /* width of the text column */
  --margin-gap: 60%;          /* how far notes sit into the right margin */
  --note: 50%;                /* width of a margin note */
}

html.garamond { --serif: "EB Garamond", "Times New Roman", Times, serif; }

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #161512;
    --ink: #e4ded1;
    --muted: #9a917f;
    --rule: #3a362e;
    --accent: #d08a7a;
  }
}

* { box-sizing: border-box; }

html { font-size: 15px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0 auto;
  max-width: 1400px;
  padding: 0 0 0 12.5%;
  width: 87.5%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.4rem;
  line-height: 1.55;
  font-kerning: normal;
  font-variant-ligatures: common-ligatures oldstyle-nums;
  text-rendering: optimizeLegibility;
  counter-reset: sidenote-counter;
}

/* --- Masthead & colophon ------------------------------------------------ */

.masthead { padding: 3rem 0 1rem; width: var(--text); }

.site-title {
  font-variant: small-caps;
  letter-spacing: 0.08em;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
}
.site-title:hover { text-decoration: underline; text-underline-offset: 0.15em; }

.colophon {
  width: var(--text);
  margin: 4rem 0 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-size: 1rem;
  color: var(--muted);
  font-variant: small-caps;
  letter-spacing: 0.05em;
}
.colophon a { color: inherit; }

/* --- Headings ----------------------------------------------------------- */

h1, h2, h3 { font-weight: 400; line-height: 1.15; }

h1 {
  font-size: 2.6rem;
  margin: 2.5rem 0 0.5rem;
  width: var(--text);
}

h2 {
  font-style: italic;
  font-size: 1.7rem;
  margin: 2.2rem 0 0.6rem;
  width: var(--text);
}

h3 {
  font-style: italic;
  font-size: 1.4rem;
  margin: 1.8rem 0 0.4rem;
  width: var(--text);
}

.subtitle {
  font-style: italic;
  font-size: 1.6rem;
  margin: 0.3rem 0 0;
  width: var(--text);
  color: var(--muted);
}

.dateline {
  margin: 0.8rem 0 2.2rem;
  font-variant: small-caps;
  letter-spacing: 0.06em;
  font-size: 1.1rem;
  color: var(--muted);
}

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

p, ul, ol, dl, blockquote, pre, table, .footnotes {
  width: var(--text);
}

p { margin: 0 0 1rem; hyphens: auto; -webkit-hyphens: auto; }

/* The opening line of an article, in small caps, as in old books */
.prose > p:first-of-type::first-line {
  font-variant: small-caps;
  letter-spacing: 0.04em;
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}
a:hover { text-decoration-color: var(--accent); color: var(--accent); }

ul, ol { padding-left: 1.4em; margin: 0 0 1rem; }
li { margin-bottom: 0.3rem; }

blockquote {
  margin: 1.4rem 0;
  padding: 0 0 0 1.5rem;
  border-left: 1px solid var(--rule);
  font-style: italic;
}
blockquote p { width: 100%; }

hr {
  border: 0;
  width: var(--text);
  margin: 2rem 0;
  text-align: center;
  color: var(--muted);
}
hr::before { content: "⁂"; font-size: 1.3rem; }

img { max-width: 100%; height: auto; }

/* Captioned images: ![alt](src "Caption") */
.figure { display: block; margin: 1.5rem 0; }
.figure img { display: block; width: 100%; }
.caption {
  display: block;
  margin-top: 0.4rem;
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.35;
  color: var(--muted);
}
p:has(> .figure:only-child)::first-line { font-variant: normal; letter-spacing: normal; }

code, pre {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
}
pre { overflow-x: auto; padding: 0.8rem 1rem; background: color-mix(in srgb, var(--ink) 5%, transparent); }

abbr, .smallcaps { font-variant: small-caps; letter-spacing: 0.04em; }

::selection { background: color-mix(in srgb, var(--accent) 25%, transparent); }

/* --- Sidenotes & margin notes ------------------------------------------ */

.sidenote, .marginnote {
  float: right;
  clear: right;
  margin-right: calc(-1 * var(--margin-gap));
  width: var(--note);
  margin-top: 0.3rem;
  margin-bottom: 0;
  font-size: 1.05rem;
  line-height: 1.35;
  vertical-align: baseline;
  position: relative;
  color: var(--muted);
}

.sidenote-number { counter-increment: sidenote-counter; }

.sidenote-number::after,
.sidenote::before {
  position: relative;
  vertical-align: baseline;
  font-size: 0.7em;
  top: -0.5rem;
  color: var(--accent);
}
.sidenote-number::after { content: counter(sidenote-counter); left: 0.05rem; }
.sidenote::before { content: counter(sidenote-counter) " "; }

input.margin-toggle { display: none; }
label.margin-toggle:not(.sidenote-number) { display: none; }
label.sidenote-number { display: inline-block; max-height: 2rem; }

/* --- Home page: a book's table of contents ----------------------------- */

.intro { margin: 1rem 0 2.5rem; }
.epigraph { font-style: italic; color: var(--muted); }

.contents-heading, .list-title {
  font-variant: small-caps;
  font-style: normal;
  letter-spacing: 0.1em;
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0 0 1rem;
}
.list-title { font-size: 1.3rem; margin-top: 2rem; }

.toc { list-style: none; padding: 0; }
.toc li {
  display: flex;
  align-items: last baseline;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
}
.toc li a { text-decoration: none; flex: 0 1 auto; }
.toc li a:hover { text-decoration: underline; }
/* dotted leader between title and date */
.toc li::after { content: ""; order: 1; flex: 1; border-bottom: 1px dotted var(--rule); transform: translateY(-0.3em); min-width: 1.5rem; }
.toc li time {
  order: 2;
  white-space: nowrap;
  font-variant: small-caps;
  letter-spacing: 0.05em;
  font-size: 1.05rem;
  color: var(--muted);
}

/* --- Article footer ---------------------------------------------------- */

.tags { font-size: 1.05rem; color: var(--muted); font-style: italic; margin-top: 2.5rem; }

.pager {
  width: var(--text);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2.5rem;
  font-size: 1.05rem;
}
.pager .next { margin-left: auto; text-align: right; }

/* Markdown footnotes ([^1]) get a quieter, smaller treatment */
.footnotes { font-size: 1.05rem; color: var(--muted); margin-top: 3rem; }
.footnotes hr { display: none; }
.footnotes p, .footnotes ol { width: 100%; }

/* --- Narrow screens: one column, notes revealed by tapping ------------- */

@media (max-width: 760px) {
  body { width: auto; padding: 0 1.1rem; font-size: 1.3rem; }
  .masthead { padding-top: 1.75rem; }
  h1 { margin-top: 1.5rem; }
  .masthead, .colophon, h1, h2, h3, .subtitle, p, ul, ol, dl, blockquote, pre, table, hr, .footnotes, .pager { width: 100%; }
  h1 { font-size: 2.1rem; }

  /* Contents: title on its own line, date underneath, no leader */
  .toc li { display: block; margin-bottom: 1.1rem; }
  .toc li::after { content: none; }
  .toc li time { display: block; font-size: 0.95rem; margin-top: 0.1rem; }

  label.margin-toggle:not(.sidenote-number) { display: inline; color: var(--accent); cursor: pointer; font-size: 0.8em; padding: 0 0.15em; }
  label.sidenote-number { cursor: pointer; }

  .sidenote, .marginnote { display: none; }
  .margin-toggle:checked + .sidenote,
  .margin-toggle:checked + .marginnote {
    display: block;
    float: left;
    left: 1rem;
    clear: both;
    width: 95%;
    margin: 1rem 2.5%;
    position: relative;
  }
}

@media print {
  :root { --paper: #fff; --ink: #000; }
  .masthead, .colophon, .pager { display: none; }
}

/* --- Additions ---------------------------------------------------------- */

/* "Reply by email" link at the end of articles */
.reply { margin-top: 2.5rem; font-style: italic; color: var(--muted); }

/* Justified body text, like a printed book */
.prose p {
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

/* Two images side by side: <figure class="pair"><img …><img …><figcaption>…</figcaption></figure> */
figure.pair {
  width: var(--text);
  margin: 1.5rem 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: end;
}
figure.pair img { width: 100%; height: auto; display: block; }
figure.pair figcaption {
  grid-column: 1 / -1;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--muted);
}
@media (max-width: 760px) { figure.pair { width: 100%; } }