/* Mingyang Liu, job-market page. Layout after jarahman.com; own pine-teal palette. */

:root {
  --bg: #FAF9F6;             /* warm off-white page */
  --card: #FFFFFF;           /* sidebar, JMP card */
  --fg: #1C2321;             /* headings, labels   15.2:1 on --bg */
  --muted: #4B5754;          /* running text        7.2:1 on --bg, 7.5:1 on --card */
  --primary: #1D5C54;        /* pine-teal           7.4:1 on --bg, 7.8:1 on --card */
  --primary-strong: #154640; /* hover               10.1:1 on --bg */
  --on-primary: #FFFFFF;
  --tint: #E8F0EE;
  --secondary: #F1F4F2;      /* hover fills */
  --border: #DDE3E0;
  --shadow: 0 1px 2px rgba(28,35,33,.06), 0 4px 16px rgba(28,35,33,.06);

  --font-sans: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-serif: "Newsreader", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --fs-body: 1.0625rem;
  --fs-small: 0.9375rem;
  --fs-xs: 0.8125rem;
  --fs-h2: 2rem;
  --fs-h3: 1.375rem;
  --fs-h4: 1.1875rem;
  --fs-name: 2.125rem;
  --measure: 38rem;
  --radius-sm: 3px;
  --radius-lg: 8px;
  --sidebar-w: 22rem;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 100%; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--muted);
  font: 400 var(--fs-body)/1.65 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; color: var(--fg); margin: 0; }
h1, h2, h3, h4, .role-line { text-wrap: balance; }
p, dd { text-wrap: pretty; }
p { margin: 0 0 1rem; }
strong { font-weight: 600; color: var(--fg); }
ul { list-style: none; margin: 0; padding: 0; }

a {
  color: var(--primary);
  text-decoration: underline solid;
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
}
@supports (text-decoration-color: color-mix(in srgb, red 70%, transparent)) {
  a { text-decoration-color: color-mix(in srgb, var(--primary) 70%, transparent); }
}
a:hover, a:focus-visible { color: var(--primary-strong); text-decoration-color: currentColor; }

:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: var(--radius-sm); }
main:focus { outline: none; }          /* programmatic target of the skip link only */
main:focus-visible { outline: none; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.i {
  width: 18px; height: 18px; flex-shrink: 0;
  fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round;
}
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--primary); color: var(--on-primary);
  padding: .5rem 1rem; border-radius: var(--radius-sm);
  font-weight: 600; text-decoration: none; box-shadow: var(--shadow);
}
.skip-link:focus, .skip-link:focus-visible { top: 1rem; color: var(--on-primary); }

/* ---------- Sidebar ---------- */
.side { background: var(--card); }
.profile { text-align: center; }
.portrait {
  display: block; margin: 0 auto 1.25rem;
  width: 200px; height: 200px; object-fit: cover;
  border-radius: 50%; border: 4px solid #fff; outline: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.name { font-size: var(--fs-name); line-height: 1.15; letter-spacing: -.01em; margin-bottom: .75rem; }

.roles { display: inline-block; text-align: left; overflow-wrap: anywhere; max-width: 100%; }
.roles li {
  display: flex; gap: .7rem; align-items: flex-start;
  font-size: var(--fs-small); line-height: 1.4; font-weight: 500; color: var(--muted);
  margin-bottom: .9rem;
}
.roles li .i { margin-top: .1rem; width: 17px; height: 17px; }
.role-line { display: block; }

.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem; margin-top: .35rem; }
.actions a {
  display: inline-flex; align-items: center; gap: .45rem;
  border: 1px solid var(--border); background: var(--card); border-radius: var(--radius-sm);
  padding: .4rem .75rem; font: 500 .875rem/1.4 var(--font-sans); color: var(--fg); text-decoration: none;
}
.actions a .i { width: 16px; height: 16px; color: var(--muted); }
.actions a:hover, .actions a:focus-visible { background: var(--secondary); color: var(--fg); }

.nav { width: 100%; }
.nav ul { display: flex; flex-direction: column; gap: .35rem; position: relative; }
.nav a {
  display: flex; gap: .75rem; align-items: center;
  padding: .65rem 1rem; border-radius: var(--radius-sm);
  color: var(--fg); font-weight: 500; font-size: 1rem; line-height: 1.5; text-decoration: none;
}
.nav a:hover, .nav a:focus-visible { background: var(--secondary); color: var(--fg); }
.nav a .chev { margin-left: auto; display: none; }
.nav a.is-active, .nav a[aria-current] { background: var(--primary); color: var(--on-primary); box-shadow: var(--shadow); }
.nav a.is-active .chev, .nav a[aria-current] .chev { display: block; }
@media (forced-colors: active) {
  .nav a.is-active, .nav a[aria-current] { outline: 2px solid Highlight; outline-offset: -2px; }
}

/* ---------- Content column ---------- */
.content { min-width: 0; }
.content > main, .content > footer { max-width: var(--measure); margin-inline: auto; }

section { padding-block: 3.5rem; }
section + section { border-top: 1px solid var(--border); }
main > section:first-child { padding-top: 0; }

h2 { font-size: var(--fs-h2); line-height: 1.15; letter-spacing: -.01em; margin-bottom: 1.5rem; }
h3.group { font-size: var(--fs-h3); line-height: 1.25; margin: 3rem 0 0; }

.market { font-style: italic; }
.market strong { color: var(--muted); }

.eyebrow {
  font: 600 var(--fs-xs)/1.4 var(--font-sans);
  text-transform: uppercase; letter-spacing: .06em;
  color: var(--primary); background: none; margin: 0 0 .35rem;
}

/* Education / Experience rows */
.entry {
  display: grid; grid-template-columns: 1fr auto; column-gap: 1.5rem;
  grid-template-areas: "title dates" "body .";
  margin-bottom: 1.75rem;
}
.entry:last-child { margin-bottom: 0; }
.entry-title { font-size: var(--fs-h4); line-height: 1.3; margin: 0 0 .15rem; }
.entry .entry-title { grid-area: title; }
.entry-dates {
  grid-area: dates; margin: .15rem 0 0; text-align: right; white-space: nowrap;
  color: var(--primary); font-weight: 600; font-size: var(--fs-small); font-variant-numeric: tabular-nums;
}
.entry-body { grid-area: body; min-width: 0; }
.org { margin: 0 0 .2rem; overflow-wrap: anywhere; }
.sub { font-size: var(--fs-small); line-height: 1.55; margin: 0 0 .25rem; }
#teaching .entry-title { margin-bottom: .3rem; }

/* JMP */
.jmp {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
}
.jmp-title { font-size: 1.5rem; line-height: 1.2; margin: 0 0 .35rem; }
.jmp-title a, .paper h4 a { color: var(--fg); text-decoration: none; }
.jmp-title a:hover, .jmp-title a:focus-visible,
.paper h4 a:hover, .paper h4 a:focus-visible { color: var(--primary-strong); text-decoration: underline; text-decoration-thickness: 1px; }
.status { font-size: var(--fs-small); line-height: 1.55; margin: 0 0 .5rem; }

.links { display: flex; flex-wrap: wrap; gap: .35rem 1.25rem; margin: 0 0 1rem; }
.links a {
  display: inline-flex; align-items: center; gap: .35rem;
  font-weight: 600; font-size: var(--fs-small); text-decoration: none;
}
.links a .i { width: 15px; height: 15px; }
.links a:hover, .links a:focus-visible { text-decoration: underline; }

.intro { margin-top: 1.25rem; }
.intro p { margin-bottom: .9rem; }
.intro p:last-of-type { margin-bottom: 0; }
.intro strong { color: var(--fg); }

/* Working papers */
.paper { margin-top: 2.25rem; }
h3.group + .paper { margin-top: 1rem; }
.paper h4 { font-size: var(--fs-h4); line-height: 1.3; margin-bottom: .25rem; }
.summary { font-size: var(--fs-small); line-height: 1.6; margin: .35rem 0 .5rem; }
.paper .links { margin-bottom: 0; }
.paper .status.earlier { margin: .6rem 0 0; }
.agenda-link { font-size: var(--fs-small); margin: 2.5rem 0 0; }

/* Contact */
dl.contact { display: grid; grid-template-columns: 9rem 1fr; gap: .5rem 1rem; margin: 0 0 1.5rem; }
dl.contact dt { font-weight: 600; color: var(--fg); }
dl.contact dd { margin: 0; overflow-wrap: anywhere; }

.site-footer { color: var(--muted); font-size: var(--fs-xs); border-top: 1px solid var(--border); padding: 2rem 0; }
.site-footer p { margin: 0; }

/* ---------- Desktop: fixed sidebar ---------- */
@media (min-width: 1024px) {
  .side {
    position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w);
    overflow-y: auto; border-right: 1px solid var(--border);
    padding: clamp(1rem, 2.5vh, 2.5rem) 2rem;
    display: flex; flex-direction: column; align-items: center;
  }
  .profile { width: 100%; }
  .portrait {
    width: clamp(6.5rem, 16vh, 12.5rem); height: clamp(6.5rem, 16vh, 12.5rem);
    margin-bottom: clamp(.75rem, 2vh, 1.25rem);
  }
  .name { margin-bottom: clamp(.4rem, 1vh, .75rem); }
  .roles li { margin-bottom: clamp(.4rem, 1.2vh, .9rem); }
  .nav { margin-top: clamp(.75rem, 2.2vh, 2.5rem); }
  .nav ul { gap: clamp(.1rem, .3vh, .35rem); }
  .nav a { padding: clamp(.3rem, .85vh, .65rem) 1rem; }

  .content { margin-left: var(--sidebar-w); padding: 4rem 3rem; }
  section { padding-block: 5rem; scroll-margin-top: 1.5rem; }
  .jmp { scroll-margin-top: 1.5rem; }
  main > section:first-child { padding-top: 0; }
}
@media (min-width: 1024px) and (max-height: 640px) {
  .side { padding-block: .75rem; }
  .portrait { width: 6rem; height: 6rem; margin-bottom: .5rem; }
  .name { font-size: 1.875rem; }
  .roles li { margin-bottom: .3rem; }
  .nav { margin-top: .75rem; }
  .nav ul { gap: .1rem; }
  .nav a { padding-block: .3rem; }
}
@media (min-width: 1280px) {
  .content { padding: 5rem 5rem 3rem; }
}

/* ---------- Tablet and phone: header + sticky pill bar ---------- */
@media (max-width: 1023.98px) {
  html { scroll-padding-top: 4.5rem; }
  .side { display: contents; }
  .profile { background: var(--card); padding: 2.5rem 2rem 1.5rem; }
  .portrait { width: 136px; height: 136px; }
  .nav {
    position: sticky; top: 0; z-index: 10;
    background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  }
  .nav ul {
    flex-direction: row; gap: .25rem;
    width: max-content; max-width: 100%; margin-inline: auto;
    overflow-x: auto; scrollbar-width: thin;
    padding: .5rem 1rem; scroll-padding-inline: 1rem;
  }
  .nav a { white-space: nowrap; padding: .45rem .7rem; font-size: var(--fs-small); gap: 0; }
  .nav a .i { display: none; }
  .nav a.is-active .chev, .nav a[aria-current] .chev { display: none; }
  .content { padding: 2.5rem 2rem; }
}
@media (max-width: 1023.98px) and (max-height: 30rem) {
  .nav { position: static; }
  html { scroll-padding-top: 0; }
}

@media (max-width: 599.98px) {
  :root { --fs-h2: 1.625rem; --fs-name: 1.875rem; }
  .profile { padding: 2rem 1rem 1.25rem; }
  .portrait { width: 128px; height: 128px; }
  .content { padding: 2rem 1rem; }
  section { padding-block: 3rem; }
  main > section:first-child { padding-top: 0; }
  .entry { grid-template-columns: 1fr; grid-template-areas: "title" "dates" "body"; }
  .entry-dates { text-align: left; margin: 0 0 .2rem; }
  dl.contact { grid-template-columns: 1fr; gap: 0; }
  dl.contact dt { margin-top: .6rem; }
  dl.contact dt:first-child { margin-top: 0; }
  .jmp { padding: 1.25rem 0 0; border: 0; border-top: 2px solid var(--primary); border-radius: 0; background: none; }
}

@media (max-width: 419.98px) {
  .nav ul { gap: 0; padding-inline: .5rem; scroll-padding-inline: .5rem; }
  .nav a { padding: .4rem .45rem; font-size: .875rem; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  a, .nav a, .actions a { transition: background-color .15s, color .15s; }
}

/* ---------- Print ---------- */
@media print {
  @page { margin: 16mm; }
  body { font-size: 10.5pt; color: #000; background: #fff; }
  h1, h2, h3, h4, strong, dl.contact dt, .intro strong, .market strong { color: #000; }
  a, .jmp-title a, .paper h4 a { color: #000; text-decoration: none; }
  .skip-link, .nav, .actions, .links, .sprite { display: none !important; }
  .side { position: static; display: block; width: auto; border: 0; padding: 0 0 12pt; overflow: visible; }
  .profile { text-align: left; padding: 0; background: none; }
  .portrait { float: left; width: 72px; height: 72px; margin: 0 12pt 0 0; box-shadow: none; }
  .name { font-size: 20pt; margin: 0 0 4pt; }
  .roles { display: block; }
  .roles li { display: inline-flex; margin: 0 12pt 0 0; font-size: 9.5pt; color: #000; }
  .content { margin: 0; padding: 0; clear: both; }
  .content > main, .content > footer { max-width: none; }
  section { padding-block: 12pt; }
  .jmp { border: 1pt solid #999; border-radius: 0; background: none; padding: 10pt 12pt; }
  .entry-dates, .eyebrow { color: #000; }
  .jmp-title a[href^="/"]::after, .paper h4 a[href^="/"]::after { content: "mingyangliu.org" attr(href); display: block; font: 400 8.5pt var(--font-sans); margin-top: 2pt; }
  article, .entry, .paper, dl.contact { break-inside: avoid; }
  article.jmp { break-inside: auto; }
  .intro p { orphans: 3; widows: 3; }
  h2, h3, h4 { break-after: avoid; }
}

.nw { white-space: nowrap; }

/* ---------- Round 5: name note, Imperial logo, research exhibits, teaching notes ---------- */
.name-note {
  font-size: var(--fs-xs); line-height: 1.5; color: var(--muted);
  max-width: 19rem; margin: -.35rem auto .9rem; text-wrap: pretty;
}
.role-logo { margin: .4rem 0 .2rem; }
.role-logo img { display: block; width: auto; height: 15px; }

.exhibit { margin: 1.25rem 0 0; }
.exhibit-link { display: block; max-width: 32rem; }
.exhibit.exhibit-wide .exhibit-link { max-width: 100%; }
.exhibit-link:focus-visible { outline-offset: 2px; }
.exhibit img {
  display: block; width: 100%;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .6rem;
}
.exhibit figcaption { font-size: var(--fs-small); line-height: 1.6; margin-top: .6rem; max-width: 36rem; }
.exhibit sup { line-height: 0; }
.exhibit-src { display: block; font-size: var(--fs-xs); line-height: 1.5; margin-bottom: .3rem; }
.paper .exhibit + .status.earlier { margin-top: 1rem; }
.teaching-links { margin-top: .6rem; }

@media (min-width: 1024px) and (max-height: 860px) {
  .name-note { font-size: .75rem; margin-bottom: .5rem; }
  .roles li { margin-bottom: .35rem; }
  .role-logo { margin: .25rem 0 .2rem; }
  .actions { gap: .4rem; margin-top: .2rem; }
  .actions a { padding: .28rem .6rem; }
}
@media (min-width: 1024px) and (max-height: 640px) {
  .name-note { margin-bottom: .3rem; }
}
@media (max-width: 599.98px) {
  .exhibit img { padding: .3rem; }
}
@media print {
  .name-note { margin: 0 0 4pt; max-width: none; }
  .role-logo { display: none; }
  .exhibit { break-inside: avoid; }
  .exhibit-link { max-width: 60%; }
  .exhibit img { border: 0; padding: 0; }
}

/* ---------- Round 5 review fixes ---------- */
.role-logo { margin: .45rem 0 .3rem; }
.role-logo img { height: 20px; }
.exhibit.exhibit-narrow .exhibit-link { max-width: 28rem; }
.exhibit-src a { white-space: nowrap; }
@media (min-width: 1024px) and (max-height: 860px) {
  .role-logo { margin: .3rem 0 .2rem; }
}
/* Short laptop screens (e.g. 1280x720, 1366x768, 1920x1080 at 150%): keep the whole sidebar in view */
@media (min-width: 1024px) and (max-height: 800px) {
  .side { padding-block: .6rem; }
  .portrait { width: 4.5rem; height: 4.5rem; margin-bottom: .35rem; }
  .name { font-size: 1.625rem; margin-bottom: .25rem; }
  .name-note { font-size: .72rem; line-height: 1.4; margin: 0 auto .4rem; }
  .roles li { margin-bottom: .25rem; line-height: 1.3; }
  .role-logo { margin: .15rem 0 .1rem; }
  .actions { gap: .3rem; margin-top: 0; }
  .actions a { padding: .18rem .5rem; font-size: .8125rem; }
  .nav { margin-top: .5rem; }
  .nav ul { gap: 0; }
  .nav a { padding-block: .2rem; }
}
@media (min-width: 1024px) and (min-height: 661px) and (max-height: 800px) {
  .portrait { width: 5.5rem; height: 5.5rem; margin-bottom: .5rem; }
  .role-logo { margin: .35rem 0 .3rem; }
  .actions { gap: .4rem; }
  .nav a { padding-block: .3rem; }
}
@media (max-width: 599.98px) {
  .actions { max-width: 17rem; margin-inline: auto; }
}
@media (min-width: 1024px) and (max-height: 580px) {
  .side { padding-block: .4rem; }
  .portrait { width: 3.5rem; height: 3.5rem; margin-bottom: .25rem; }
  .name { font-size: 1.5rem; margin-bottom: .15rem; }
  .roles li { margin-bottom: .15rem; }
  .nav { margin-top: .35rem; }
  .nav a { padding-block: .1rem; }
}

/* ---------- Round 11: language switch, locator line, placement contacts, Chinese twin (/zh/jobmarket/) ---------- */
/* Absolutely placed so it takes no height in the sidebar: on desktop it sits in the fixed sidebar's top corner,
   on tablet and phone (.side is display: contents) in the top corner of the page, above the profile header. */
.lang-switch {
  position: absolute; top: .55rem; right: .75rem; z-index: 5;
  display: flex; align-items: center; gap: .1rem; margin: 0;
  font: 500 var(--fs-xs)/1.4 var(--font-sans);
}
.lang-switch a {
  padding: .15rem .45rem; border-radius: var(--radius-sm);
  color: var(--muted); text-decoration: none;
}
.lang-switch a[aria-current] { background: var(--tint); color: var(--primary-strong); font-weight: 600; }
.lang-switch a:hover, .lang-switch a:focus-visible { color: var(--primary-strong); text-decoration: underline; }
.lang-switch .sep { color: var(--border); }

.intro p.src-line, .src-line { font-size: var(--fs-xs); line-height: 1.5; margin: .6rem 0 0; }
.title-zh { font-size: var(--fs-small); line-height: 1.5; color: var(--fg); margin: 0 0 .3rem; }
.jmp .title-zh { font-size: 1rem; }
#contact .group { margin-top: 2.25rem; margin-bottom: 1rem; }
#contact .entry { margin-bottom: 1.25rem; }
.contact-more { margin-top: 1.75rem; }

/* Chinese twin: CJK fallbacks after the Latin faces, no italics or capitals for Chinese text, roomier lines. */
:root[lang^="zh"] {
  --font-sans: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-serif: "Newsreader", "Iowan Old Style", Georgia, "Times New Roman", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", serif;
}
:root[lang^="zh"] body { line-height: 1.8; }
:root[lang^="zh"] .eyebrow { letter-spacing: .04em; text-transform: none; }
:root[lang^="zh"] .market { font-style: normal; }
:root[lang^="zh"] .name { letter-spacing: .04em; }
:root[lang^="zh"] .summary, :root[lang^="zh"] .sub, :root[lang^="zh"] .exhibit figcaption { line-height: 1.75; }
@media (min-width: 600px) {
  :root[lang^="zh"] dl.contact { grid-template-columns: 10rem 1fr; }
}

/* Nine sections since round 11: keep the whole sidebar nav in view on laptop heights the rules above leave
   uncompressed (801-980 px), with a slightly smaller portrait and tighter nav rows. */
@media (min-width: 1024px) and (min-height: 801px) and (max-height: 980px) {
  .portrait { width: clamp(6.5rem, 12.5vh, 12.5rem); height: clamp(6.5rem, 12.5vh, 12.5rem); }
  .nav { margin-top: clamp(.75rem, 1.6vh, 2.5rem); }
  .nav a { padding-block: clamp(.3rem, .55vh, .65rem); }
}

@media print {
  .lang-switch { display: none !important; }
}

/* Round 12: research programme list (About) and JMP contributions */
.programme-lead { margin: 1.1rem 0 .45rem; }
ol.programme, ol.pitch-list { list-style: decimal; padding-left: 1.5rem; margin: 0 0 1rem; }
ol.programme li, ol.pitch-list li { margin: 0 0 .5rem; line-height: 1.6; padding-left: .15rem; }
ol.programme li::marker, ol.pitch-list li::marker { color: var(--fg); font-weight: 600; }
.pq { font-weight: 600; color: var(--fg); }
.pitch-h { font: 600 var(--fs-xs)/1.4 var(--font-sans); text-transform: uppercase; letter-spacing: .06em; color: var(--primary); margin: 1.2rem 0 .5rem; }
.jmp-pitch ol.pitch-list li { font-size: inherit; }

/* Inline video explainer (JMP) */
.video-exhibit video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #F7F7F3; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.video-exhibit figcaption { max-width: none; }