/* Learning from Language Lab. Typography-led, no framework.
   Newsreader (text) and IBM Plex Mono (metadata), self-hosted, SIL OFL. */

@font-face { font-family: "Newsreader"; font-style: normal; font-weight: 400 700; font-display: swap;
  src: url("../fonts/newsreader.woff2") format("woff2"); }
@font-face { font-family: "Newsreader"; font-style: italic; font-weight: 400 700; font-display: swap;
  src: url("../fonts/newsreader-italic.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../fonts/plex-mono-400.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("../fonts/plex-mono-500.woff2") format("woff2"); }

:root {
  --paper: #f6f9fb;
  --panel: #eaf3f8;
  --ink: #1b1d22;
  --muted: #666a73;
  --rule: #cfdae3;
  --link: #0f4c8a;
  --mark: #ffe680;
  --carolina: #4b9cd3;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 1040px;
  --label: 180px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121417; --panel: #1a1d22; --ink: #e8e5dd; --muted: #a0a29f;
    --rule: #2d3036; --link: #8fc1ee; --mark: #6b5800;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 19px/1.6 var(--serif); font-optical-sizing: auto; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--carolina); outline-offset: 3px; }
h1, h2, h3 { text-wrap: balance; font-weight: 560; line-height: 1.15; letter-spacing: -.012em; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
mark { background: var(--mark); color: inherit; padding: 0 .12em; border-radius: 2px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 6px 12px; z-index: 10; }
.skip-link:focus { left: 8px; }
.label, .badge, .venue, .meta, nav, time { font-family: var(--mono); }
.label { font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
[hidden] { display: none !important; }
h2.label { margin: 0; line-height: 1.4; }

/* ---- Masthead ---- */
.masthead { padding: 22px 0 18px; border-bottom: 1px solid var(--rule); }
.masthead .wrap { display: flex; justify-content: space-between; align-items: baseline; gap: 12px 32px; flex-wrap: wrap; }
.wordmark { font-size: 1.3rem; font-weight: 620; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.wordmark { display: inline-flex; align-items: center; gap: 10px; }
.wordmark-mark { width: 28px; height: 28px; border-radius: 22%; outline: 1px solid var(--rule); flex: none; }
.wordmark em { font-weight: 400; color: var(--muted); }
.wordmark:hover { text-decoration: none; color: var(--ink); }
.masthead nav { display: flex; gap: 6px 22px; flex-wrap: wrap; font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; }
.masthead nav a { color: var(--muted); text-decoration: none; padding: 2px 0; border-bottom: 2px solid transparent; }
.masthead nav a:hover { color: var(--ink); }
.masthead nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--carolina); }

/* ---- Row layout: mono label in the margin, content to the right ---- */
.row { display: grid; grid-template-columns: var(--label) minmax(0, 1fr); gap: 8px 32px; padding: 40px 0; border-top: 1px solid var(--rule); }
.row:first-of-type { border-top: 0; }
.row > .label { padding-top: .55em; }
@media (max-width: 760px) { .row { grid-template-columns: 1fr; padding: 28px 0; } .row > .label { padding-top: 0; } body { font-size: 18px; } }

/* ---- Home ---- */
.intro { padding: clamp(28px, 5vw, 52px) 0 20px; }
.intro h1 { font-size: clamp(1.7rem, 3vw, 2.2rem); font-weight: 560; line-height: 1.15; letter-spacing: -.018em; max-width: 30em; margin-bottom: .35em; }
.intro h1 em { font-style: italic; }
.intro .lede { font-size: clamp(1.15rem, 1.7vw, 1.3rem); line-height: 1.55; max-width: 34em; color: var(--ink); margin-bottom: 1em; }

.record { font-size: 1.15rem; line-height: 1.55; max-width: 40em; margin: 0; }
.record strong { font-weight: 620; }
.group-photo { margin: 0 0 8px; }
.group-photo img { width: 100%; border: 1px solid var(--rule); }
.record p { margin-bottom: .6em; }
.picks { list-style: none; margin: 0; padding: 0; }
.pick { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; padding: 18px 0; border-top: 1px solid var(--rule); align-items: start; }
.pick:first-child { border-top: 0; padding-top: 0; }
.pick img { width: 200px; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; border: 1px solid var(--rule); padding: 4px; }
.pick h3 { font-size: 1.28rem; margin: .15em 0 .25em; }
.pick h3 a { color: var(--ink); text-decoration: none; }
.pick h3 a:hover { color: var(--link); text-decoration: underline; }
@media (max-width: 620px) { .pick { grid-template-columns: 1fr; gap: 10px; } .pick img { width: 100%; max-width: 360px; } }

.log { list-style: none; margin: 0; padding: 0; }
.log li { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 16px; padding: 9px 0; }
.log time { font-size: .78rem; color: var(--muted); padding-top: .42em; white-space: nowrap; }
.log span { max-width: 40em; }
@media (max-width: 560px) { .log li { grid-template-columns: 1fr; gap: 0; } }
.more { font: 500 .8rem var(--mono); letter-spacing: .04em; text-transform: uppercase; }

/* Newsreader's f+V kerning pair is too wide ("Diff Vax"); paper titles are set without kerning. */
.paper-title, .pick h3 { font-kerning: none; }

/* ---- Meta (venue, badges) ---- */
.venue { font-size: .82rem; font-weight: 500; color: var(--ink); }
.badge { font-size: .68rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-left: 6px; }
.badge-oral { color: var(--ink); background: var(--mark); padding: 1px 6px; border-radius: 2px; }

/* ---- Inner pages ---- */
.page-head { padding: clamp(24px, 4vw, 44px) 0 8px; }
.page-head h1 { font-size: clamp(1.7rem, 3vw, 2.2rem); font-weight: 560; letter-spacing: -.016em; margin: 0 0 .2em; }
.page-head .lede { font-size: 1.25rem; color: var(--muted); max-width: 34em; margin: 0; }
.page-body { padding-bottom: 72px; }


/* Publications */
.pub-controls { padding: 18px 0 6px; border-top: 1px solid var(--rule); margin-top: 20px; }
.search { width: 100%; font: 400 1.1rem var(--serif); padding: 8px 0; color: var(--ink); background: transparent; border: 0; border-bottom: 1.5px solid var(--ink); border-radius: 0; }
.search::placeholder { color: var(--muted); }
.search:focus { outline: none; border-bottom-color: var(--carolina); }
.filters { display: flex; flex-wrap: wrap; gap: 4px 20px; margin: 14px 0 0; font: 500 .78rem/1.8 var(--mono); }
.filter { background: none; border: 0; border-bottom: 2px solid transparent; padding: 0; font: inherit; color: var(--muted); cursor: pointer; }
.filter:hover { color: var(--ink); }
.filter[aria-pressed="true"] { color: var(--ink); border-bottom-color: var(--tag, var(--carolina)); }
.count { font: 400 .76rem var(--mono); color: var(--muted); margin: 10px 0 0; }
.year-group { margin-top: 28px; }
.year { font: 500 .9rem var(--mono); color: var(--muted); margin: 0 0 4px; padding-bottom: 6px; border-bottom: 1px solid var(--ink); }
.paper-list { list-style: none; margin: 0; padding: 0; }
.paper { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 4px 24px; padding: 16px 0; border-bottom: 1px solid var(--rule); }
.paper .meta { font-size: .82rem; line-height: 1.7; }
.paper .meta .badge { display: inline-block; margin: 0 6px 0 0; }
.paper-title { font-size: 1.2rem; font-weight: 580; line-height: 1.28; margin: 0 0 3px; }
.paper-authors { margin: 0 0 6px; font-size: .96rem; color: var(--muted); }
.paper-authors .lab-member { color: var(--ink); font-weight: 600; text-decoration: none; }
.paper-authors a.lab-member:hover { color: var(--link); text-decoration: underline; }
.paper-links { font: 400 .8rem var(--mono); display: flex; flex-wrap: wrap; gap: 2px 16px; align-items: baseline; }
.paper-links a { text-transform: lowercase; }
.abstract summary { cursor: pointer; color: var(--link); list-style: none; }
.abstract summary::-webkit-details-marker { display: none; }
.abstract summary::before { content: "+ "; }
.abstract[open] summary::before { content: "\2212  "; }
.abstract { flex-basis: 100%; }
.abstract p { font: 400 1rem/1.55 var(--serif); color: var(--muted); max-width: 42em; margin: 8px 0 4px; }
.empty { color: var(--muted); padding: 24px 0; }
@media (max-width: 700px) { .paper { grid-template-columns: 1fr; } }

/* Team */
.people { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px 32px; }
.person { display: flex; gap: 16px; align-items: center; }
.person img { width: 76px; height: 76px; object-fit: cover; flex: none; border: 1px solid var(--rule); }
.person h3 { font-size: 1.15rem; margin: 0; }
.person h3 a { color: var(--ink); text-decoration: none; }
.person h3 a:hover { color: var(--link); text-decoration: underline; }
.person .role { font: 400 .76rem var(--mono); color: var(--muted); margin: 2px 0 0; }
.people.pi { display: block; }
.people.pi .person { align-items: flex-start; }
.people.pi img { width: 132px; height: 132px; }
.people.pi .bio { margin: 8px 0 0; max-width: 36em; }
.alumni { list-style: none; margin: 0; padding: 0; font-size: 1rem; line-height: 1.9; }
.alumni li { display: inline; }
.alumni li:not(:last-child)::after { content: " \00b7  "; color: var(--muted); }
.alumni .yrs { font: 400 .74rem var(--mono); color: var(--muted); white-space: nowrap; }

/* Join */
.prose h2 { font-size: 1.5rem; margin-top: 1.6em; }
.prose h2:first-child { margin-top: 0; }
.prose { max-width: 38em; }
.btn { display: inline-block; font: 500 .82rem var(--mono); letter-spacing: .04em; text-transform: uppercase; text-decoration: none; color: var(--paper); background: var(--ink); padding: 10px 18px; }
.btn:hover { background: var(--link); color: #fff; text-decoration: none; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--ink); margin-top: 24px; padding: 28px 0 44px; font-size: .95rem; color: var(--muted); }
.site-footer .wrap { display: grid; grid-template-columns: var(--label) minmax(0, 1fr); gap: 8px 32px; }
.site-footer address { font-style: normal; }
.footer-id { display: flex; gap: 16px; align-items: flex-start; }
.footer-mark { flex: none; width: 40px; height: 40px; border-radius: 9px; outline: 1px solid var(--rule); outline-offset: 0; }
@media (max-width: 760px) { .site-footer .wrap { grid-template-columns: 1fr; } }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .masthead nav, .pub-controls, .site-footer { display: none; } body { font-size: 11pt; background: #fff; } }

/* ---- Home/research v3 additions ---- */
.more-line { margin: 12px 0 0; }

.selected { display: flex; flex-wrap: wrap; gap: 0 14px; margin-top: .5em; font-size: .98rem; line-height: 1.8; }
.selected-label { flex-basis: 100%; font: 500 .7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.sel-item { white-space: nowrap; }
.sel-item .yr, .yr { font: 400 .72rem var(--mono); color: var(--muted); }
.pick-tile { width: 200px; aspect-ratio: 4 / 3; background: var(--panel); border: 1px solid var(--rule); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 6px; text-align: center; padding: 8px; }
.pick-tile b { font: 600 1.5rem/1.1 var(--serif); letter-spacing: -.01em; }
.pick-tile span { font: 500 .72rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
@media (max-width: 620px) { .pick-tile { width: 100%; max-width: 360px; aspect-ratio: 16 / 7; } }
.pick h3 { font-size: 1.3rem; margin: 0 0 .25em; }
.direction-tag { display: inline-block; margin: 0 0 .6rem; padding: 2px 9px; font: 500 .68rem/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: #fff; background: var(--tag, var(--ink)); border-radius: 2px; text-decoration: none; }
.direction-tag:hover { color: #fff; filter: brightness(1.15); text-decoration: none; }
.finding { margin: 0 0 8px; max-width: 38em; }
.pick-meta { margin: 0; font-size: .9rem; display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline; }

.resources { list-style: none; margin: 0; padding: 0; columns: 2 280px; column-gap: 32px; font-size: .98rem; }
.resources li { break-inside: avoid; padding: 3px 0; }
.resources a { font: 400 .78rem var(--mono); margin-left: 8px; }
.res-name { font-weight: 600; }

.page-intro { font-size: 1.2rem; line-height: 1.55; max-width: 38em; margin: 8px 0 28px; }

/* Research thrusts: full width, colored to match the highlight tags on the home page */
.thrust { max-width: 46em; margin: 0 0 44px; padding: 2px 0 2px 24px; border-left: 6px solid var(--tag); }
.thrust h2 { font-size: 1.4rem; margin: 0 0 .5em; line-height: 1.3; }
.thrust-title { display: inline-block; background: var(--tag); color: #fff; padding: .2em .6em; border-radius: 2px; }
.thrust .question { font-style: italic; font-size: 1.15rem; color: var(--muted); }

/* Publication filters: color marker matches the thrust color */
.filter[style*="--tag"]::before { content: ""; display: inline-block; width: .65em; height: .65em; background: var(--tag); margin-right: .5em; vertical-align: -.02em; }

/* Research page: open questions, collaboration examples, featured resources */
.plain-list { margin: 0; padding-left: 1.1em; max-width: 40em; }
.plain-list li { margin: 0 0 .6em; }
.resource-featured { list-style: none; margin: 0 0 8px; padding: 0; max-width: 46em; }
.resource-featured li { padding: 9px 0; border-bottom: 1px solid var(--rule); }
.resource-featured a { font: 400 .78rem var(--mono); margin-left: 8px; }
.res-note { display: block; color: var(--muted); font-size: .98rem; margin-top: 2px; }
details.all-resources { margin-top: 16px; }
details.all-resources > summary { cursor: pointer; font: 500 .8rem var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--link); }
details.all-resources[open] > summary { margin-bottom: 10px; }

.led-by { color: var(--muted); max-width: 34em; margin: 0 0 .9em; }

.themes-list { list-style: none; margin: 0 0 1.1em; padding: 0; }
.themes-list li { margin: 0 0 .7em; padding-left: 14px; border-left: 2px solid var(--rule); }