/* One stylesheet for the homepage and the blog. Light and dark follow the OS. */

:root {
  --bg: #fbfaf7;
  --text: #1c1c1a;
  --muted: #6c6a64;
  --faint: #9a978f;
  --rule: #e4e0d7;
  --accent: #00356b;          /* Yale blue */
  --accent-soft: #e8eef6;
  --code-bg: #f3f1ec;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --sans: Inter, -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --measure: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151514;
    --text: #e7e5df;
    --muted: #a3a097;
    --faint: #75726b;
    --rule: #2c2b28;
    --accent: #9cbcf0;
    --accent-soft: #1f2a3a;
    --code-bg: #1f1e1c;
  }
  .portrait { filter: brightness(.92); }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0 auto;
  max-width: calc(var(--measure) + 2.5rem);
  padding: 0 1.25rem;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.6 var(--serif);
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: .18em; text-decoration-thickness: 1px; }

/* ---------- masthead and footer ---------- */

.masthead {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  padding: 1.75rem 0 1rem;
  font: 500 .9rem/1 var(--sans);
}
.masthead .wordmark { color: var(--text); letter-spacing: -.01em; }
.page-home .masthead .wordmark { visibility: hidden; }
.no-head main { padding-top: 2.5rem; }
.masthead nav { display: flex; gap: 1.25rem; }
.masthead nav a { color: var(--muted); }
.masthead nav a:hover, .masthead nav a[aria-current] { color: var(--text); text-decoration: none; }

.colophon {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
  margin-top: 4.5rem; padding: 1.25rem 0 2.5rem;
  border-top: 1px solid var(--rule);
  font: .8rem/1.4 var(--sans); color: var(--faint);
}

/* ---------- intro ---------- */

.intro {
  display: grid; grid-template-columns: 1fr 11rem; gap: 3rem; align-items: center;
  padding: 2rem 0 1rem;
}
.intro h1 {
  margin: 0 0 1rem; font-weight: 600; font-size: 2.35rem; line-height: 1.1; letter-spacing: -.015em;
}
.intro .role { margin: .45rem 0 1.25rem; font: 400 .95rem/1.4 var(--sans); color: var(--muted); }
.intro .bio p { margin: 0 0 .85rem; }
.contact { margin: 1.1rem 0 0; font: .875rem/1.8 var(--sans); }
.contact .sep { color: var(--faint); margin: 0 .5rem; }
.contact a { white-space: nowrap; }
.portrait {
  display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: cover;
  border-radius: 50%;
}

@media (max-width: 38rem) {
  .intro { grid-template-columns: 1fr; gap: 1.25rem; padding-top: .5rem; }
  .portrait { width: 7.5rem; order: -1; border-radius: 50%; }
  .intro h1 { font-size: 2rem; }
}

/* ---------- sections ---------- */

section { margin-top: 3rem; }
h2 {
  margin: 0 0 1.1rem; padding-top: .9rem;
  border-top: 1px solid var(--rule);
  font: 600 .78rem/1 var(--sans); letter-spacing: .09em; text-transform: uppercase;
  color: var(--muted);
}
.more { margin: .9rem 0 0; font: .85rem/1.4 var(--sans); color: var(--faint); }
.draft { font: italic .8rem var(--sans); color: #b25c00; }

/* date | content rows used by experience, honors, talks, writing */
.rows { list-style: none; margin: 0; padding: 0; }
.rows li {
  display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem;
  padding: .3rem 0;
}
.rows .when {
  font: .82rem/1.9 var(--sans); color: var(--faint);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.rows strong { font-weight: 600; }
.rows .note { display: block; font: .85rem/1.5 var(--sans); color: var(--muted); }

.plain { margin: 0; padding: 0; list-style: none; }
.plain li { padding: .2rem 0; }

@media (max-width: 38rem) {
  .rows li { grid-template-columns: 1fr; gap: 0; padding: .45rem 0; }
  .rows .when { line-height: 1.5; }
}

/* ---------- publications ---------- */

.pubs { list-style: none; margin: 0; padding: 0; }
.pubs li {
  display: grid; grid-template-columns: 8.75rem 1fr; gap: 1.25rem; align-items: center;
  padding: .9rem 0;
}
.pubs li + li { border-top: 1px dashed var(--rule); }
.pubs .thumb {
  width: 8.75rem; aspect-ratio: 1; border-radius: 6px; overflow: hidden;
  background: #F4F2ED;              /* the thumbnails' paper tone; they recolour themselves in dark mode */
}
@media (prefers-color-scheme: dark) { .pubs .thumb { background: #1D1C1A; } }
.pubs .thumb img { display: block; width: 100%; height: 100%; }
.pubs p { margin: 0; }
.pubs .title { font-weight: 600; line-height: 1.4; }
.pubs .authors { font-size: .95rem; color: var(--muted); margin-top: .15rem; }
.pubs .authors strong { color: var(--text); font-weight: 600; }
.pubs .meta { margin-top: .35rem; font: .8rem/1.6 var(--sans); color: var(--muted); display: flex; flex-wrap: wrap; gap: .3rem .55rem; align-items: baseline; }
.pubs .cite { font-style: italic; }
.tag {
  padding: .05rem .45rem; border-radius: 3px;
  background: var(--accent-soft); font-weight: 500;
  transition: background-color .12s, color .12s;
}
.tag:hover { text-decoration: none; background: var(--accent); color: var(--bg); }
.pubs .title a { color: var(--text); }
.pubs .title a:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.pubs .thumb { display: block; transition: filter .12s; }
.pubs a.thumb:hover { filter: brightness(.97); }

@media (max-width: 38rem) {
  .pubs li { grid-template-columns: 1fr; gap: .2rem; }
  .pubs .thumb { display: none; }
}

/* ---------- blog index ---------- */

.page-title { font-size: 2rem; font-weight: 600; letter-spacing: -.01em; margin: 2rem 0 1.5rem; }
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { padding: 1rem 0; border-top: 1px solid var(--rule); }
.post-list time { display: block; font: .8rem/1.6 var(--sans); color: var(--faint); }
.post-list a { font-size: 1.2rem; font-weight: 600; }
.post-list p { margin: .25rem 0 0; color: var(--muted); }
.empty { color: var(--muted); }

/* ---------- post ---------- */

.post > header { margin: 2rem 0 2rem; }
.post h1 { font-size: 2.3rem; line-height: 1.15; font-weight: 600; letter-spacing: -.015em; margin: 0; }
.byline { margin: .6rem 0 0; font: .85rem var(--sans); color: var(--faint); }

.toc {
  margin: 0 0 2rem; padding: .9rem 1.1rem;
  border-left: 2px solid var(--rule);
  font: .88rem/1.7 var(--sans);
}
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc ul ul { padding-left: 1rem; }
.toc a { color: var(--muted); }

.prose { font-size: 1.125rem; line-height: 1.7; }
.prose > * + *, .prose section > * + * { margin-top: 1.1em; }
.prose p { margin: 0; }
.prose p + p { margin-top: 1.1em; }
.prose h2, .prose h3 {
  font-family: var(--serif); text-transform: none; letter-spacing: -.005em;
  color: var(--text); border: 0; padding: 0;
}
.prose h2 { font-size: 1.45rem; font-weight: 600; margin: 2.2em 0 .6em; line-height: 1.25; }
.prose h3 { font-size: 1.15rem; font-weight: 600; margin: 1.8em 0 .4em; }
.prose a { text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent); text-underline-offset: .18em; }
.prose blockquote { margin: 1.4em 0; padding: 0 0 0 1.1rem; border-left: 2px solid var(--rule); color: var(--muted); font-style: italic; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li + li { margin-top: .3em; }
.prose img, .prose video { max-width: 100%; height: auto; display: block; margin: 0 auto; }
.prose figure { margin: 2em 0; }
.prose figcaption { margin-top: .6rem; font: .85rem/1.5 var(--sans); color: var(--muted); text-align: center; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5em auto; width: 30%; }
.prose table { border-collapse: collapse; font: .9rem/1.5 var(--sans); margin: 1.5em auto; }
.prose th, .prose td { padding: .35rem .8rem; border-bottom: 1px solid var(--rule); text-align: left; }

/* math */
.prose mjx-container[display="true"] {
  display: block; overflow-x: auto; overflow-y: hidden;
  margin: 1.3em 0 !important; padding: .2em 0;
}
.prose mjx-container { font-size: 105% !important; }
.prose mjx-container a { text-decoration: none; }

/* code */
code { font-family: var(--mono); font-size: .86em; background: var(--code-bg); padding: .1em .3em; border-radius: 3px; }
pre { background: var(--code-bg); padding: .9rem 1.1rem; border-radius: 5px; overflow-x: auto; line-height: 1.5; }
pre code { background: none; padding: 0; font-size: .84rem; }
.sourceCode { overflow: visible; }
pre > code.sourceCode > span { display: inline; }
code span.kw, code span.cf, code span.im { color: #8a3ffc; }
code span.dt, code span.bu { color: #0f62fe; }
code span.dv, code span.bn, code span.fl, code span.cn { color: #b3541e; }
code span.st, code span.ch, code span.ss, code span.vs { color: #2e7d32; }
code span.co, code span.do, code span.an, code span.cv, code span.in { color: var(--faint); font-style: italic; }
code span.fu { color: #0b6e99; }
code span.op, code span.ot { color: var(--muted); }
code span.er, code span.al { color: #c62828; }
@media (prefers-color-scheme: dark) {
  code span.kw, code span.cf, code span.im { color: #c7a4ff; }
  code span.dt, code span.bu { color: #82aaff; }
  code span.dv, code span.bn, code span.fl, code span.cn { color: #f0a36b; }
  code span.st, code span.ch, code span.ss, code span.vs { color: #a5d6a7; }
  code span.fu { color: #7fd1e8; }
}

/* footnotes and references */
.footnotes, #refs { font-size: .92rem; color: var(--muted); }
.footnotes { margin-top: 3rem; border-top: 1px solid var(--rule); padding-top: 1rem; }
.footnotes hr { display: none; }
.footnotes ol { padding-left: 1.2rem; }
a.footnote-ref sup { font: 600 .7em var(--sans); }
#refs .csl-entry { margin: 0 0 .6em; padding-left: 1.5em; text-indent: -1.5em; }
.citation a { text-decoration: none; }
#refs .csl-entry { display: flex; gap: .6em; padding-left: 0; text-indent: 0; }
#refs .csl-left-margin { flex: 0 0 2em; color: var(--faint); }

/* post byline, citation footer, figures */
.post .authors { margin: .7rem 0 0; font: 500 .95rem/1.4 var(--sans); color: var(--text); }
.post .authors .affil { font-weight: 400; color: var(--muted); }
.post .byline { margin-top: .25rem; }
.post .byline a { color: var(--muted); }

.post-footer { margin-top: 3.5rem; font: .85rem/1.6 var(--sans); color: var(--muted); }
.post-footer .cite-line { margin: 0 0 .8rem; color: var(--text); overflow-wrap: anywhere; }
.bibtex { position: relative; }
.bibtex pre { margin: 0; font-size: .78rem; white-space: pre-wrap; overflow-wrap: anywhere; }
.bibtex .copy {
  position: absolute; top: .5rem; right: .5rem;
  font: 500 .72rem var(--sans); padding: .2rem .55rem; border-radius: 3px; cursor: pointer;
  border: 1px solid var(--rule); background: var(--bg); color: var(--muted);
}
.bibtex .copy:hover { color: var(--text); border-color: var(--muted); }
.post-footer .license { margin: 1rem 0 0; }

.prose figure { margin: 2.2em 0; }
.prose figure img { border-radius: 4px; }
.prose figure:has(img.wide) { margin-left: -6rem; margin-right: -6rem; }
@media (max-width: 58rem) { .prose figure:has(img.wide) { margin-left: 0; margin-right: 0; } }
.prose figcaption { text-align: left; max-width: 38rem; margin: .7rem auto 0; }
.prose figcaption strong { color: var(--text); font-weight: 600; }
/* Figures fill their box unless the post gives a width ({width=55%}). */
.prose figure img:not([style*="width"]) { width: 100%; }