/* Arnau Oliver — personal site. Visual language follows the ViCOROB group site. */
:root{
  --blue:#1E73BE; --blue-dark:#155a96; --steel:#3C7A9E; --deep:#006699; --sky:#6BB6D4;
  --ink:#272626; --muted:#5b6166; --line:#e3e6e8; --bg:#ffffff; --bg-soft:#f3f5f6; --card:#ffffff;
  --hero:#4d5960;
  --t-brain:#0f6e8c; --t-brain-bg:#e1f1f6;
  --t-breast:#a3366a; --t-breast-bg:#fbe9f1;
  --t-prostate:#5a4bb0; --t-prostate-bg:#eeecfb;
  --t-other:#5b6166; --t-other-bg:#eef0f1;
  --t-education:#8a5a0b; --t-education-bg:#fbf0dc;
  --head:'Work Sans', system-ui, sans-serif;
  --body:system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --wrap:1120px; --radius:6px;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    --blue:#5aa6e6; --blue-dark:#7db9ec; --steel:#7fb6d6; --deep:#5fb0d6;
    --ink:#e8eaeb; --muted:#a9b0b5; --line:#2e353a; --bg:#15191c; --bg-soft:#1c2226; --card:#1c2226;
    --hero:#2a3237;
    --t-brain:#8fd0e6; --t-brain-bg:#173540;
    --t-breast:#f0a6c8; --t-breast-bg:#3d1f2d;
    --t-prostate:#b9b0f2; --t-prostate-bg:#2a2650;
    --t-other:#c3c9cd; --t-other-bg:#2a3035;
    --t-education:#f1c27a; --t-education-bg:#3b2c12;
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--body)}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3,.head{font-family:var(--head)}
h2.section{font-weight:700;text-transform:uppercase;color:var(--steel);font-size:clamp(22px,3vw,30px);letter-spacing:.3px;line-height:1.15;margin:0 0 20px}
h3{font-weight:600;font-size:19px;line-height:1.3;margin:0 0 8px}
section{padding:56px 0}
section.soft{background:var(--bg-soft)}
.lead{font-size:18px;color:var(--ink)}
.muted{color:var(--muted)}
.skip{position:absolute;left:-999px;top:8px;background:var(--blue);color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}

/* ---------- header / nav ---------- */
.site-header{position:absolute;top:0;left:0;right:0;z-index:20}
.site-header.solid{position:sticky;background:var(--steel)}
@media (prefers-color-scheme: dark){.site-header.solid{background:#24404f}}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font:700 15px/1 var(--head);letter-spacing:1px;text-transform:uppercase}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;grid-template-columns:repeat(3,7px);grid-template-rows:repeat(3,7px);gap:2px}
.brand-mark i{background:#fff;display:block}
.brand-mark i:nth-child(2),.brand-mark i:nth-child(8){background:transparent}
.menu{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.menu a{color:#fff;font:500 15px var(--head);padding:6px 0;border-bottom:2px solid transparent}
.menu a:hover,.menu a[aria-current="page"]{text-decoration:none;border-bottom-color:#fff}
.menu-btn{display:none;background:none;border:0;color:#fff;padding:8px;margin-right:-8px;cursor:pointer}
.menu-btn svg{width:26px;height:26px;display:block}
@media (max-width: 860px){
  .menu-btn{display:block}
  .menu{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;background:var(--steel);padding:8px 24px 16px}
  @media (prefers-color-scheme: dark){.menu{background:#24404f}}
  .menu.open{display:flex}
  .menu a{display:block;padding:12px 0;font-size:17px;border-bottom:1px solid rgba(255,255,255,.18)}
  .menu a[aria-current="page"]{border-bottom-color:rgba(255,255,255,.18);font-weight:700}
}

/* ---------- pixel mosaic hero ---------- */
.hero{position:relative;background:var(--hero);color:#fff;overflow:hidden;min-height:440px;display:flex;align-items:flex-end}
.hero.small{min-height:230px}
.mosaic{position:absolute;inset:0;pointer-events:none}
.mosaic span{position:absolute;transition:opacity 1.2s ease}
.hero .wrap{position:relative;width:100%;padding-bottom:44px;padding-top:96px}
.hero-title{font:700 clamp(30px,5.2vw,54px)/1.05 var(--head);margin:0;max-width:760px}
.hero-sub{font:500 clamp(15px,1.8vw,19px)/1.4 var(--head);margin:12px 0 0;max-width:640px;color:#eef5f8}
.hero.small .hero-title{font-size:clamp(28px,4.4vw,44px);text-transform:uppercase}
.hero-box{display:inline-block}

/* ---------- profile intro ---------- */
.intro{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.photo{position:relative;width:240px;aspect-ratio:250/316;cursor:pointer;-webkit-tap-highlight-color:transparent}
.photo img{position:absolute;inset:0;width:100%;height:100%;transition:opacity .35s ease}
.photo .kid{opacity:0}
.photo:hover .kid,.photo.flip .kid{opacity:1}
.photo:hover .adult,.photo.flip .adult{opacity:0}
@media (prefers-color-scheme: dark){.photo img{filter:brightness(.92)}}
.intro h1{font:700 clamp(30px,4vw,44px)/1.1 var(--head);text-transform:uppercase;color:var(--steel);margin:0 0 6px}
.role{font:500 17px/1.45 var(--head);color:var(--muted);margin:0 0 18px}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.btn{display:inline-flex;align-items:center;gap:8px;min-height:42px;padding:9px 18px;border-radius:4px;background:var(--blue);color:#fff;font:500 15px var(--head);border:1.5px solid var(--blue)}
.btn:hover{background:var(--blue-dark);border-color:var(--blue-dark);text-decoration:none;color:#fff}
.btn.ghost{background:transparent;color:var(--blue)}
.btn.ghost:hover{background:var(--blue);color:#fff}
.btn svg{width:18px;height:18px}
.facts{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:6px;color:var(--muted);font-size:15px}
@media (max-width: 760px){
  .intro{grid-template-columns:minmax(0,1fr);gap:20px;justify-items:center}
  .intro > div:last-child{width:100%}
  .intro h1,.intro .role{text-align:center}
  .photo{width:170px}
  .btns{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .btns .btn{justify-content:center;padding:9px 10px}
}

/* ---------- cards ---------- */
.grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr))}
.card{background:var(--card);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
section.soft .card{background:var(--bg)}
.card .thumb{aspect-ratio:16/9;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:contain}
.card .body{padding:16px 2px 4px}
section.soft .card .body{padding:16px 18px 18px}
.cat{font:500 14px var(--head);color:var(--blue);margin:0 0 4px}
.card h3 a{color:var(--ink)}
.card p{margin:0;color:var(--muted);font-size:15px}
.more{font:500 15px var(--head);display:inline-block;margin-top:10px}

/* news list */
.news{list-style:none;margin:0;padding:0;display:grid;gap:0}
.news li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;padding:16px 0;border-top:1px solid var(--line)}
.news li:last-child{border-bottom:1px solid var(--line)}
.news time{font:500 14px var(--head);color:var(--muted);padding-top:2px}
.news .cat{margin:0}
.news h3{font-size:17px;margin:2px 0 0}
@media (max-width: 560px){.news li{grid-template-columns:1fr;gap:2px}}

/* ---------- tags / chips ---------- */
.tag{display:inline-block;font:500 12.5px/1 var(--head);padding:5px 9px 4px;border-radius:3px;white-space:nowrap}
.tag.brain{color:var(--t-brain);background:var(--t-brain-bg)}
.tag.breast{color:var(--t-breast);background:var(--t-breast-bg)}
.tag.prostate{color:var(--t-prostate);background:var(--t-prostate-bg)}
.tag.other{color:var(--t-other);background:var(--t-other-bg)}
.tag.education{color:var(--t-education);background:var(--t-education-bg)}
.metric{font:500 12.5px/1 var(--head);color:var(--muted);border:1px solid var(--line);padding:4px 8px 3px;border-radius:3px;white-space:nowrap}

/* ---------- publications ---------- */
.pub-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:44px;align-items:start}
.filters{position:sticky;top:88px}
.filters h4{font:600 13px var(--head);text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:22px 0 8px}
.filters h4:first-of-type{margin-top:16px}
.search{width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:4px;font:15px var(--body);background:var(--bg);color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{min-height:36px;padding:7px 13px;border-radius:4px;border:1.5px solid var(--blue);background:transparent;color:var(--blue);font:500 14px var(--head);cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.chip[aria-pressed="true"]{background:var(--blue);color:#fff}
.chip .n{opacity:.75;font-size:12.5px}
.count{font:500 15px var(--head);color:var(--muted);margin:0 0 6px}
.year{font:700 22px var(--head);color:var(--steel);margin:30px 0 4px;padding-bottom:6px;border-bottom:2px solid var(--steel)}
.pub{padding:16px 0;border-bottom:1px solid var(--line)}
.pub .meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:7px}
.pub .kind{font:500 13.5px var(--head);color:var(--blue)}
.pub h3{font-size:17px;margin:0 0 4px}
.pub h3 a{color:var(--ink)}
.pub .authors{margin:0;font-size:14.5px;color:var(--muted)}
.pub .authors b{color:var(--ink);font-weight:600}
.pub .venue{margin:2px 0 0;font-size:14.5px;font-style:italic;color:var(--muted)}
.pub .links{display:flex;gap:16px;margin-top:6px;font:500 14px var(--head)}
.empty{padding:30px 0;color:var(--muted)}
@media (max-width: 860px){
  .pub-layout{grid-template-columns:minmax(0,1fr);gap:10px}
  .filters{min-width:0;position:static;background:var(--bg-soft);margin:0 -24px;padding:6px 24px 16px}
  .filters .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -24px;padding:0 24px 2px}
  .filters .chips::-webkit-scrollbar{display:none}
  .chip{flex:0 0 auto}
}

/* ---------- lists / teaching ---------- */
.plain{list-style:none;margin:0;padding:0}
.item{padding:14px 0;border-bottom:1px solid var(--line)}
.item:first-child{border-top:1px solid var(--line)}
.item .name{font:600 16px var(--head)}
.item .title{font-style:italic}
.item .info{color:var(--muted);font-size:14.5px}
details{border-bottom:1px solid var(--line)}
details:first-of-type{border-top:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:14px 0;font:600 16px var(--head);display:flex;justify-content:space-between;align-items:center;gap:10px;min-height:48px}
summary::-webkit-details-marker{display:none}
summary::after{content:"";width:9px;height:9px;border-right:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(45deg);transition:transform .2s;flex:0 0 auto;margin-right:4px}
details[open] summary::after{transform:rotate(-135deg)}
summary .n{font-weight:500;color:var(--muted);font-size:14px;margin-left:auto}
details > div,details > ul{padding:0 0 16px}
.courses{margin:0;padding-left:20px}
.courses li{margin:3px 0}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}
@media (max-width: 760px){.two{grid-template-columns:1fr;gap:28px}}

/* ---------- breast imaging ---------- */
.topic{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;padding:40px 0;border-top:1px solid var(--line)}
.topic:first-of-type{border-top:0;padding-top:0}
.topic figure{margin:0;background:#fff;border-radius:var(--radius);padding:12px;align-self:start}
.topic figure img{margin:0 auto}
.topic figure .pair{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.topic aside{margin-top:14px;font-size:14.5px}
.topic aside h4{font:600 13px var(--head);text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:0 0 8px}
.refs{display:flex;flex-wrap:wrap;gap:6px}
.refs a{font:500 13px/1 var(--head);padding:6px 9px 5px;border:1px solid var(--line);border-radius:3px;color:var(--ink)}
.refs a:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.data{margin-top:16px;padding:14px 16px;background:var(--bg-soft);border-left:3px solid var(--blue);font-size:15px}
.data p{margin:0 0 6px}
.data p:last-child{margin:0}
@media (max-width: 860px){.topic{grid-template-columns:1fr;gap:18px}.topic figure{order:-1}}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 30px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-soft);padding:40px 0 30px;font-size:14.5px;color:var(--muted);margin-top:0}
.foot{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) auto;gap:32px;align-items:start}
.foot h4{font:600 13px var(--head);text-transform:uppercase;letter-spacing:.6px;color:var(--ink);margin:0 0 8px}
.foot p{margin:0 0 4px}
.logos{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.logos a{background:#fff;border-radius:4px;padding:6px 8px;display:block}
.logos img{height:34px;width:auto}
.logos a.dark{background:#3C7A9E}
.foot-bottom{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:13.5px}
.pixel-strip{height:10px;display:grid;grid-auto-flow:column;grid-auto-columns:1fr}
@media (max-width: 760px){.foot{grid-template-columns:1fr;gap:22px}}

/* collapsible whole section (teaching: previous years) */
details.fold,details.fold:first-of-type{border:0}
details.fold > summary{padding:0;min-height:0}
details.fold > summary h2.section{margin:0}
details.fold > summary::after{width:12px;height:12px;border-width:0 3px 3px 0;border-color:var(--steel)}
details.fold[open] > summary{margin-bottom:20px}

/* teaching areas */
.areas{margin-top:28px;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.area{background:var(--bg-soft);border-top:4px solid var(--steel);padding:20px 22px 22px;display:flex;flex-direction:column}
.area h3{font-size:20px}
.area > p:not(.cat){margin:0 0 12px;color:var(--muted);font-size:15px}
.area .courses{padding-left:18px;font-size:14.5px;margin:0 0 4px}
.area .courses .muted{font-size:13px;white-space:nowrap}
.area .more{margin-top:auto;padding-top:8px}

/* tabs (roles page) */
.tabs{display:flex;gap:0;border-bottom:2px solid var(--line);margin:0 0 8px}
.tabs [role="tab"]{background:none;border:0;border-bottom:3px solid transparent;margin-bottom:-2px;padding:12px 20px;min-height:48px;font:600 17px var(--head);color:var(--muted);cursor:pointer}
.tabs [role="tab"][aria-selected="true"]{color:var(--steel);border-bottom-color:var(--steel)}
.tabs [role="tab"]:hover{color:var(--ink)}
h3.sub{font:600 13px var(--head);text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:28px 0 10px}
@media (max-width: 560px){.tabs [role="tab"]{flex:1;padding:12px 8px;font-size:16px}}

/* home hero shows the name */
.hero:not(.small) .hero-title{text-transform:uppercase;letter-spacing:.5px}
.intro > div:last-child > .lead:first-child{margin-top:0}
@media (max-width: 760px){.intro > div:last-child > .lead:first-child{margin-top:4px}}

/* compact, minimal headers */
.hero{min-height:220px}
.hero.small{min-height:160px}
.hero .wrap{padding-top:80px;padding-bottom:26px}
.hero-title{font-size:clamp(26px,3.6vw,38px)}
.hero.small .hero-title{font-size:clamp(22px,3vw,30px)}
.hero-sub{font-size:clamp(14px,1.4vw,16px);margin-top:6px}
@media (max-width: 600px){.hero{min-height:190px}.hero.small{min-height:140px}.hero .wrap{padding-top:76px;padding-bottom:20px}}

/* MI Vision Lab logo in the nav */
.brand .logo{height:38px;width:auto;color:#fff;display:block}
@media (max-width: 600px){.brand .logo{height:32px}}

/* heading with a counter on the right */
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:20px}
.sec-head h2.section{margin:0}
.sec-head .n{font:500 14px var(--head);color:var(--muted);white-space:nowrap}

/* very compact header (about half the previous height) */
.nav{height:56px}
.brand .logo{height:32px}
@media (max-width: 860px){.menu{top:56px}}
.hero,.hero.small{min-height:0;padding:0}
.hero .wrap{padding-top:60px;padding-bottom:14px}
.hero-box{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:18px;row-gap:2px}
.hero-title{font-size:clamp(22px,2.6vw,30px);line-height:1.15}
.hero.small .hero-title{font-size:clamp(18px,2vw,22px)}
.hero-sub{margin:0;font-size:14px}
.hero-sub .short{display:none}
@media (max-width: 600px){
  .brand .logo{height:28px}
  .hero .wrap{padding-top:58px;padding-bottom:12px}
  .hero-sub .long{display:none}.hero-sub .short{display:inline}
}
main > section:first-child{padding-top:32px}

/* header logos: MI Vision Lab -> ViCOROB, UdG -> udg.edu */
.brands{display:flex;align-items:center;gap:16px}
.brand.udg{padding-left:16px;border-left:1px solid rgba(255,255,255,.35)}
.brand.udg img{height:30px;width:auto;display:block}
@media (max-width: 600px){.brands{gap:10px}.brand.udg{padding-left:10px}.brand.udg img{height:24px}}
/* home hero: name, and the full role line below it, breaking only between parts */
.hero:not(.small) .hero-box{display:block}
.hero:not(.small) .hero-sub{margin-top:4px}
.hero-sub .nw{white-space:nowrap}
.brand.udg img{height:44px}
@media (max-width: 600px){.brand.udg img{height:38px}.hero-sub .sep{display:none}.hero-sub .nw{display:block}}
/* home role line: always on a single line, shrinking on narrow screens */
.hero:not(.small) .hero-sub{white-space:nowrap}
@media (max-width: 600px){.hero:not(.small) .hero-sub{white-space:normal;font-size:min(13px,3.4vw)}.hero-sub .nw{display:inline}}