/* Shared foundation for every design.
   A design sets the variables below in its own stylesheet and overrides a few
   components; everything else (spacing, rectangular photo, publications, CV,
   reading typography) comes from here so all designs stay consistent. */

:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #2a2a28;
  --muted: #6f6d67;
  --line: #e4e1d9;
  --accent: #4f6f8f;
  --code-bg: #f2efe8;
  --selection: rgba(79, 111, 143, .2);

  --font-body: ui-serif, Georgia, "Songti SC", "Noto Serif SC", serif;
  --font-head: var(--font-body);
  --font-ui: ui-sans-serif, -apple-system, "Segoe UI", "Helvetica Neue", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  --fs: 1.0625rem;
  --lh: 1.68;
  --measure: 44rem;     /* reading width of posts */
  --page: 60rem;        /* page container */
  --pad-x: 1.75rem;
  --pad-top: 1.6rem;
  --gap: 2.25rem;       /* space between sections */
  --photo-w: 13rem;
  --photo-radius: 2px;

  --syn-comment: #8d8a80;
  --syn-keyword: #7b5e8c;
  --syn-string: #5f7a5c;
  --syn-number: #a5673f;
  --syn-func: #3e6a8a;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs);
  line-height: var(--lh);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--selection); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
.sep { color: var(--muted); opacity: .7; }
[id] { scroll-margin-top: 1.25rem; }
ul.post-list, ul.project-list, ol.pub-list, ul.exp-list, ul.misc-list { list-style: none; margin: 0; padding: 0; }

/* ---------- frame ---------- */
.wrap { max-width: var(--page); margin: 0 auto; padding: var(--pad-top) var(--pad-x) 1rem; }
.masthead { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: .5rem 1.5rem; margin-bottom: var(--gap); }
.brand { font-family: var(--font-head); font-weight: 600; font-size: 1.1rem; text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: .25rem 1.3rem; font-size: .95rem; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--text); }
.nav a[aria-current] { color: var(--accent); }

/* ---------- about: profile ---------- */
.profile { display: grid; grid-template-columns: var(--photo-w) minmax(0, 1fr); gap: 0 2.25rem; align-items: start; margin-bottom: var(--gap); }
.profile-photo { margin: 0; }
.profile-photo img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: 50% 68%; border-radius: var(--photo-radius); }
.profile-name { font-family: var(--font-head); font-size: 2rem; font-weight: 600; line-height: 1.15; margin: 0 0 .4rem; }
.profile-name .native { font-size: .58em; font-weight: 400; color: var(--muted); margin-left: .25em; white-space: nowrap; }
.profile-role { color: var(--muted); line-height: 1.5; margin: 0 0 .55rem; }
.profile-role a { color: inherit; text-decoration: none; }
.profile-role a:hover { color: var(--accent); }
.profile-links { margin: 0 0 1.1rem; }
.profile-links a { color: var(--accent); text-decoration: none; }
.profile-links a:hover { text-decoration: underline; text-underline-offset: .2em; }
.profile-bio { max-width: none; }
.profile-bio p { margin-bottom: .8em; }

/* ---------- sections ---------- */
.block { margin-bottom: var(--gap); }
.block-title { font-family: var(--font-head); font-size: 1.25rem; font-weight: 600; line-height: 1.3; margin: 0 0 .85rem; padding-bottom: .35rem; border-bottom: 1px solid var(--line); }
.block-text { margin: 0; }
.more { margin: .75rem 0 0; font-size: .95em; }
.more a { color: var(--accent); text-decoration: none; }
.more a:hover { text-decoration: underline; text-underline-offset: .2em; }

/* publications */
.pub { display: flex; flex-direction: column; margin-bottom: 1.15rem; }
.pub:last-child { margin-bottom: 0; }
.pub-title { font-weight: 600; line-height: 1.4; }
.pub-authors .me { font-weight: 600; }
.pub-venue { color: var(--muted); }
.pub-note { font-style: normal; }
.pub-note::before { content: "· "; }
.pub-summary { font-size: .93em; color: var(--muted); margin-top: .15rem; }
.pub-links { font-size: .9em; margin-top: .1rem; }
.pub-links a, .project-links a { color: var(--accent); text-decoration: none; margin-right: .85em; }
.pub-links a::before, .project-links a::before { content: "["; color: var(--muted); }
.pub-links a::after, .project-links a::after { content: "]"; color: var(--muted); }
.pub-links a:hover, .project-links a:hover { text-decoration: underline; text-underline-offset: .2em; }

/* experience */
.exp { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: .1rem 1.25rem; margin-bottom: .85rem; }
.exp:last-child { margin-bottom: 0; }
.exp-when { color: var(--muted); font-size: .92em; font-variant-numeric: tabular-nums; padding-top: .1em; }
.exp-what { display: flex; flex-direction: column; }
.exp-title { font-weight: 600; }
.exp-org a { color: var(--accent); text-decoration: none; }
.exp-org a:hover { text-decoration: underline; text-underline-offset: .2em; }
.exp-detail { color: var(--muted); font-size: .93em; }

/* projects */
.project { margin-bottom: 1rem; }
.project:last-child { margin-bottom: 0; }
.project-title { font-family: var(--font-head); font-size: 1.04em; font-weight: 600; margin: 0; }
.project-title a { text-decoration: none; }
.project-title a:hover { color: var(--accent); }
.project-meta { color: var(--muted); font-size: .88em; margin: .05rem 0 .25rem; }
.project-summary { margin: 0 0 .2rem; }
.project-links { margin: 0; font-size: .9em; }

/* talks / service / honors */
.misc-list li { display: grid; grid-template-columns: 4.6rem minmax(0, 1fr); gap: 1rem; margin-bottom: .4rem; }
.misc-kind { font-family: var(--font-ui); font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding-top: .32em; }
.misc-text a { color: var(--accent); text-decoration: none; }
.misc-text a:hover { text-decoration: underline; text-underline-offset: .2em; }

/* post lists */
.post-item { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: .1rem 1rem; padding: .3rem 0; }
.post-link { flex: 1 1 15rem; text-decoration: none; }
.post-link:hover { color: var(--accent); }
.post-date { color: var(--muted); font-size: .88em; white-space: nowrap; font-variant-numeric: tabular-nums; }
.post-excerpt { flex-basis: 100%; margin: 0; color: var(--muted); font-size: .92em; }
.post-cat { font-family: var(--font-ui); font-size: .68rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-right: .35em; }

/* page headers (writing, cv) */
.page-header { margin-bottom: calc(var(--gap) * .85); }
.page-title { font-family: var(--font-head); font-size: 2.1rem; font-weight: 600; line-height: 1.15; margin: 0 0 .4rem; }
.page-lede { color: var(--muted); margin: 0; }
.page-lede a { color: var(--accent); text-decoration: none; }
.page-lede a:hover { text-decoration: underline; text-underline-offset: .2em; }
.writing { max-width: var(--measure); }
.year { margin-bottom: calc(var(--gap) * .8); }
.year-title { font-family: var(--font-head); font-size: 1.05rem; font-weight: 600; color: var(--muted); margin: 0 0 .35rem; padding-bottom: .3rem; border-bottom: 1px solid var(--line); }
.writing .post-item { padding: .5rem 0; }

/* cv */
.cv { max-width: var(--measure); }
.cv-body h2 { font-size: 1.2rem; margin: 1.9em 0 .7em; padding-bottom: .3rem; border-bottom: 1px solid var(--line); }
.cv-body h2:first-child { margin-top: 0; }
.cv-body .cv-entry { margin-bottom: .55em; }
.cv-body ul { margin-bottom: 1.1em; }
.cv-date { float: right; margin-left: 1rem; color: var(--muted); font-size: .9em; font-variant-numeric: tabular-nums; }

/* ---------- post page ---------- */
.post { max-width: var(--measure); }
.post-header { margin-bottom: 2rem; }
.post-kicker { margin: 0 0 1rem; font-size: .9rem; }
.post-kicker a { color: var(--muted); text-decoration: none; }
.post-kicker a:hover { color: var(--accent); }
.post-header .post-title { font-family: var(--font-head); font-size: 2.2rem; font-weight: 600; line-height: 1.2; margin: 0 0 .6rem; }
.post-lede { color: var(--muted); font-size: 1.1em; line-height: 1.5; margin: 0 0 .8rem; }
.post-meta { color: var(--muted); font-size: .88rem; margin: 0; }
.post-byline { display: none; }
.post-footer { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.post-nav { display: flex; justify-content: space-between; gap: 1.5rem; }
.post-nav a { display: flex; flex-direction: column; text-decoration: none; max-width: 48%; }
.post-nav-next { margin-left: auto; text-align: right; }
.post-nav-label { font-family: var(--font-ui); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.post-nav-title { color: var(--text); }
.post-nav a:hover .post-nav-title { color: var(--accent); }

/* ---------- long-form reading ---------- */
.prose { overflow-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose p, .prose ul, .prose ol, .prose blockquote, .prose pre, .prose table, .prose figure, .prose details, .prose .fp-example { margin: 0 0 1.2em; }
.prose h2, .prose h3, .prose h4 { font-family: var(--font-head); line-height: 1.3; font-weight: 600; margin: 2em 0 .65em; }
.prose h2 { font-size: 1.4em; }
.prose h3 { font-size: 1.15em; }
.prose h4 { font-size: 1em; }
.prose a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .2em; text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.prose a:hover { text-decoration-color: currentColor; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: .3em 0; }
.prose li > ul, .prose li > ol { margin: .3em 0 0; }
.prose li::marker { color: var(--muted); }
.prose strong { font-weight: 600; }
.prose blockquote { margin-left: 0; padding: .1em 0 .1em 1.1em; border-left: 2px solid var(--accent); color: var(--muted); font-style: italic; }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose hr { border: 0; height: 1px; background: var(--line); margin: 2.25em 0; }
.prose code { font-family: var(--font-mono); font-size: .86em; background: var(--code-bg); padding: .12em .36em; border-radius: 4px; }
.prose pre, .prose .highlight pre { font-family: var(--font-mono); font-size: .84rem; line-height: 1.6; background: var(--code-bg); padding: .9rem 1.1rem; border-radius: 6px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; font-size: inherit; border-radius: 0; }
.prose div.highlighter-rouge { margin: 0 0 1.2em; }
.prose div.highlighter-rouge pre { margin: 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: .92em; display: block; overflow-x: auto; }
.prose th, .prose td { padding: .45em .75em; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { font-weight: 600; border-bottom-color: var(--muted); }
.prose img { border-radius: 3px; }
.prose figcaption { color: var(--muted); font-size: .88em; margin-top: .5em; }
.prose details { border: 1px solid var(--line); border-radius: 6px; padding: .6rem 1rem; }
.prose details > summary { cursor: pointer; font-weight: 600; }
.prose details[open] > summary { margin-bottom: .6rem; }
.prose .fp-example { background: var(--code-bg); border-left: 3px solid var(--accent); border-radius: 0 6px 6px 0; padding: .8rem 1.1rem; }
.prose .fp-example > :last-child { margin-bottom: 0; }
.prose .mermaid { margin: 0 0 1.2em; display: flex; justify-content: center; overflow-x: auto; }
.prose .footnotes { margin-top: 2.5em; padding-top: 1em; border-top: 1px solid var(--line); font-size: .9em; color: var(--muted); }
.prose sup a, .prose a.reversefootnote { text-decoration: none; }
.prose mjx-container[display="true"] { overflow-x: auto; overflow-y: hidden; padding: .15em 0; }

/* syntax highlighting (rouge) */
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs, .highlight .sd { color: var(--syn-comment); font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kr, .highlight .kc, .highlight .ow, .highlight .nb { color: var(--syn-keyword); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .se, .highlight .si { color: var(--syn-string); }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh { color: var(--syn-number); }
.highlight .nf, .highlight .fm, .highlight .nc { color: var(--syn-func); }

/* ---------- footer ---------- */
.site-footer { margin-top: calc(var(--gap) * 1.4); padding-top: 1rem; border-top: 1px solid var(--line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: .4rem 1.5rem; font-size: .85rem; color: var(--muted); }
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

@media (max-width: 680px) {
  :root { --pad-x: 1.1rem; --pad-top: 1.1rem; --gap: 1.9rem; }
  .profile { grid-template-columns: minmax(0, 1fr); }
  .profile-photo { width: 11rem; margin-bottom: 1.1rem; }
  .exp { grid-template-columns: minmax(0, 1fr); }
  .misc-list li { grid-template-columns: minmax(0, 1fr); gap: 0; margin-bottom: .6rem; }
  .profile-name, .page-title, .post-header .post-title { font-size: 1.75rem; }
  .cv-date { float: none; display: block; margin: 0; }
  .profile-bio, .block-text, .post .prose { text-align: left !important; hyphens: manual !important; }
}

@media print {
  .nav, .site-footer, .post-nav { display: none !important; }
  body { background: #fff; color: #000; padding: 0; }
}