/* Paulo M. Mendes — static site styles */
:root{
  --paper:#faf8f2;
  --ink:#1f2537;
  --gold:#c99a3c;
  --background:#faf8f2;
  --foreground:#1f2537;
  --card:#ffffff;
  --primary:#1e2a4a;
  --primary-fg:#faf8f2;
  --muted:#efece2;
  --muted-fg:#6a6f80;
  --accent:#eee2c7;
  --border:#e2ddce;
  --font-display:"Instrument Serif", ui-serif, Georgia, serif;
  --font-sans:"Work Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
}
*{box-sizing:border-box;border-color:var(--border)}
html,body{margin:0;padding:0}
html{font-family:var(--font-sans);-webkit-font-smoothing:antialiased}
body{background:var(--background);color:var(--foreground);font-feature-settings:"ss01","cv11";line-height:1.5}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:400;letter-spacing:-0.01em;margin:0}
img{max-width:100%;display:block}
input,button{font:inherit;color:inherit}

/* layout */
.container{max-width:72rem;margin:0 auto;padding:0 1.5rem}
.container-sm{max-width:56rem;margin:0 auto;padding:0 1.5rem}
.container-md{max-width:64rem;margin:0 auto;padding:0 1.5rem}

.site{min-height:100vh;display:flex;flex-direction:column}
main{flex:1}

/* header */
.site-header{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--border);background:rgba(250,248,242,.85);backdrop-filter:blur(8px)}
.site-header .row{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:1.25rem 0}
.brand{display:flex;align-items:baseline;gap:.75rem}
.brand .name{font-family:var(--font-display);font-size:1.5rem;line-height:1;color:var(--primary)}
.brand .role{font-size:11px;text-transform:uppercase;letter-spacing:.22em;color:var(--muted-fg)}
@media (max-width:640px){.brand .role{display:none}}
nav.main{display:flex;gap:.25rem;font-size:.875rem}
nav.main a{padding:.5rem .75rem;border-radius:.375rem;color:var(--muted-fg);transition:color .2s}
nav.main a:hover,nav.main a.active{color:var(--primary)}
nav.main a.active{font-weight:500}

/* footer */
footer.site{border-top:1px solid var(--border);margin-top:6rem}
footer.site .grid{display:grid;gap:1.5rem;padding:2.5rem 0;font-size:.875rem;color:var(--muted-fg)}
@media (min-width:640px){footer.site .grid{grid-template-columns:repeat(3,1fr)}}
footer.site .heading{font-family:var(--font-display);font-size:1.125rem;color:var(--primary)}
footer.site .cap{text-transform:uppercase;letter-spacing:.15em;font-size:11px;margin-bottom:.5rem}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site ul li+li{margin-top:.25rem}
footer.site a:hover{color:var(--primary)}
.copyright{text-align:center;font-size:12px;color:var(--muted-fg);padding-bottom:1.5rem}

/* section utils */
.eyebrow{display:flex;align-items:center;gap:.75rem;font-size:11px;text-transform:uppercase;letter-spacing:.24em;color:var(--muted-fg)}
.rule-gold{display:inline-block;width:2.5rem;height:2px;background:var(--gold)}
.italic{font-style:italic}
.muted{color:var(--muted-fg)}
.gold{color:var(--gold)}
.card{background:var(--card);border:1px solid var(--border);border-radius:.5rem}

/* buttons */
.btn{display:inline-flex;align-items:center;padding:.75rem 1.25rem;font-size:.875rem;font-weight:500;border-radius:.375rem;transition:all .2s;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--primary);color:var(--primary-fg)}
.btn-primary:hover{background:#243258}
.btn-outline{border-color:var(--border);background:var(--card);color:var(--primary)}
.btn-outline:hover{border-color:rgba(30,42,74,.4)}

/* HERO */
.hero{overflow:hidden}
.hero .grid{display:grid;gap:3.5rem;padding:4rem 0 5rem;align-items:center}
@media (min-width:1024px){.hero .grid{grid-template-columns:1.15fr 1fr}}
.hero h1{margin-top:1.5rem;font-size:clamp(3rem,7vw,4.5rem);line-height:1.02;color:var(--primary)}
.hero .lead{margin-top:2rem;max-width:36rem;font-size:1.125rem;color:var(--muted-fg);line-height:1.65}
.hero .actions{margin-top:2.5rem;display:flex;flex-wrap:wrap;gap:.75rem}
.portrait-wrap{position:relative}
.portrait-wrap::before{content:"";position:absolute;inset:-1.5rem;background:rgba(238,226,199,.5);border-radius:.5rem;transform:rotate(1deg);z-index:0}
.portrait-wrap img{position:relative;width:100%;border-radius:.375rem;box-shadow:0 25px 50px -12px rgba(30,42,74,.15);aspect-ratio:4/5;object-fit:cover}
.portrait-cap{margin-top:1rem;font-size:.75rem;font-style:italic;color:var(--muted-fg)}

/* METRICS */
.metrics{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(255,255,255,.5)}
.metrics .grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem;padding:2.5rem 0}
@media (min-width:640px){.metrics .grid{grid-template-columns:repeat(4,1fr)}}
.metrics .k{font-family:var(--font-display);font-size:2.25rem;color:var(--primary)}
.metrics .v{margin-top:.25rem;font-size:.75rem;text-transform:uppercase;letter-spacing:.15em;color:var(--muted-fg)}

/* ABOUT */
.about{display:grid;gap:3rem;padding:5rem 0}
@media (min-width:1024px){.about{grid-template-columns:1fr 2fr}}
.about h2{margin-top:1rem;font-size:2.25rem;color:var(--primary)}
.about p{margin:0 0 1rem;font-size:15px;line-height:1.7;color:rgba(31,37,55,.85)}

/* Recent publications on home */
.recent{padding-bottom:6rem}
.recent .head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:2rem}
.recent h2{margin-top:1rem;font-size:2.25rem;color:var(--primary)}
.recent .viewall{font-size:.875rem;color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--gold)}
.pub-list{border-top:1px solid var(--border);border-bottom:1px solid var(--border);list-style:none;padding:0;margin:0}
.pub-list li{padding:1.25rem 0;border-bottom:1px solid var(--border);display:grid;gap:.5rem}
.pub-list li:last-child{border-bottom:none}
@media(min-width:640px){.pub-list.recent-list li{grid-template-columns:80px 1fr;align-items:baseline}}
.pub-year{font-family:var(--font-display);font-size:1.5rem;color:var(--gold)}
.pub-title{color:var(--foreground);font-weight:500;line-height:1.35}
.pub-title a:hover{color:var(--primary)}
.pub-meta{margin-top:.25rem;font-size:.875rem;color:var(--muted-fg);display:flex;flex-wrap:wrap;gap:.25rem .75rem}
.tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.15em;color:rgba(201,154,60,.9)}
.doi-link{font-size:.75rem;text-decoration:underline;text-underline-offset:4px}

/* CV / lists */
.page-hero{padding:4rem 0 2.5rem}
.page-hero h1{margin-top:1rem;font-size:3rem;color:var(--primary)}
.page-hero p{margin-top:1rem;color:var(--muted-fg);max-width:38rem}
.section{padding-bottom:4rem}
.section h2{font-size:1.875rem;color:var(--primary);margin-bottom:1.5rem}
.list-lined{list-style:none;padding:0;margin:0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.list-lined li{padding:1.25rem 0;display:grid;gap:.5rem;border-bottom:1px solid var(--border)}
.list-lined li:last-child{border-bottom:none}
@media(min-width:640px){.list-lined li{grid-template-columns:190px 1fr;align-items:baseline}}
.years{font-size:.875rem;color:var(--muted-fg);text-transform:uppercase;letter-spacing:.1em}
.hi-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.75rem}
.hi-list li{padding-left:1.25rem;border-left:2px solid var(--gold);color:rgba(31,37,55,.85)}

/* Research */
.research-hero h1{margin-top:1rem;font-size:3rem;color:var(--primary);max-width:48rem}
.areas{display:grid;gap:2rem;padding-bottom:5rem}
@media (min-width:768px){.areas{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.areas{grid-template-columns:repeat(3,1fr)}}
.area{border:1px solid var(--border);background:var(--card);border-radius:.5rem;overflow:hidden;transition:border-color .2s}
.area:hover{border-color:rgba(30,42,74,.4)}
.area .img{aspect-ratio:4/3;overflow:hidden;background:rgba(238,226,199,.4)}
.area .img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.area:hover .img img{transform:scale(1.03)}
.area .body{padding:1.5rem}
.area h3{margin-top:1rem;font-size:1.5rem;color:var(--primary)}
.area p{margin-top:.75rem;font-size:.875rem;color:rgba(31,37,55,.8);line-height:1.6}
.projects{padding-bottom:6rem}
.projects h2{margin-top:1rem;font-size:2.25rem;color:var(--primary);margin-bottom:2rem}
.projects .list{list-style:none;padding:0;margin:0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.projects .list li{padding:1.5rem 0;display:grid;gap:.5rem;border-bottom:1px solid var(--border)}
.projects .list li:last-child{border-bottom:none}
@media(min-width:640px){.projects .list li{grid-template-columns:150px 1fr auto;align-items:baseline}}
.projects .status{font-size:.75rem;text-transform:uppercase;letter-spacing:.15em;color:var(--gold)}

/* Publications page */
.pubs-hero h1{font-size:3rem;color:var(--primary);margin-top:1rem}
.pubs-hero p{margin-top:1rem;color:var(--muted-fg);max-width:42rem}
.stats{margin-top:1.5rem;display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;font-size:.875rem}
@media(min-width:640px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{border:1px solid var(--border);background:var(--card);border-radius:.375rem;padding:1rem}
.stat .n{font-family:var(--font-display);font-size:1.875rem;color:var(--primary)}
.stat .l{margin-top:.25rem;font-size:.75rem;text-transform:uppercase;letter-spacing:.15em;color:var(--muted-fg)}
.controls{padding:0 0 2rem;display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;justify-content:space-between}
.filters{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{padding:.375rem .75rem;font-size:.875rem;border:1px solid var(--border);border-radius:9999px;color:var(--muted-fg);background:transparent;cursor:pointer;transition:all .2s}
.chip:hover{color:var(--primary);border-color:rgba(30,42,74,.4)}
.chip.active{background:var(--primary);color:var(--primary-fg);border-color:var(--primary)}
.search{padding:.5rem 1rem;font-size:.875rem;border:1px solid var(--border);border-radius:.375rem;background:var(--card);min-width:240px;outline:none}
.search:focus{border-color:rgba(30,42,74,.6)}
.year-group{margin-bottom:2.5rem}
.year-group .head{display:flex;align-items:baseline;gap:1rem;margin-bottom:1rem}
.year-group h2{font-size:1.875rem;color:var(--gold)}
.year-group .count{font-size:.75rem;text-transform:uppercase;letter-spacing:.15em;color:var(--muted-fg)}
.empty{text-align:center;padding:4rem 0;color:var(--muted-fg);font-style:italic}

/* Contact */
.contact-grid{display:grid;gap:3.5rem;padding:4rem 0 6rem}
@media (min-width:1024px){.contact-grid{grid-template-columns:1fr 1fr}}
.contact-grid h1{margin-top:1rem;font-size:3rem;color:var(--primary)}
.contact-grid h2{margin-top:1rem;font-size:1.875rem;color:var(--primary)}
.contact-info{margin-top:2.5rem;display:flex;flex-direction:column;gap:1.5rem;font-size:15px}
.contact-info .cap{font-size:.7rem;text-transform:uppercase;letter-spacing:.15em;color:var(--muted-fg)}
.contact-info a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--gold)}
.links-list{list-style:none;padding:0;margin:2rem 0 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.links-list li{border-bottom:1px solid var(--border)}
.links-list li:last-child{border-bottom:none}
.links-list a{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}
.links-list a:hover span:first-child{color:var(--primary)}
.links-list .arrow{color:var(--gold);transition:transform .2s}
.links-list a:hover .arrow{transform:translateX(4px)}