/* ============================================================
   Pierre Beaucoral — site styles
   Earthy / climate palette · Newsreader + IBM Plex Sans/Mono
   ============================================================ */

:root{
  --paper:#EEF0EA; --ink:#1E231D; --muted:#6B6F62; --line:#DCDFD2;
  --forest:#18241D; --forest2:#2E6048; --clay:#9C5234; --ocean:#2C5C70; --cream:#F0F2EA;
  --wrap:1100px;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
::selection{background:var(--clay);color:var(--cream);}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:40px;padding-right:40px;}
.wrap-wide{max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px;}

/* ---- Typography helpers ---- */
.serif{font-family:'Newsreader',Georgia,serif;}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace;}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--clay);}
h1,h2,h3{font-family:'Newsreader',Georgia,serif;font-weight:600;letter-spacing:-0.015em;line-height:1.1;}

/* ---- Header / nav ---- */
.site-header{
  position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);
  background:rgba(238,240,234,0.6);backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);transition:box-shadow .3s,background .3s;
}
.site-header.scrolled{background:rgba(238,240,234,0.92);box-shadow:0 6px 24px rgba(27,38,32,0.08);}
.site-header .bar{height:68px;display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:12px;}
.brand .dot{width:11px;height:11px;border-radius:50%;background:var(--clay);}
.brand .brand-icon{width:26px;height:26px;object-fit:contain;display:block;}
.brand .name{font-family:'Newsreader',serif;font-size:20px;font-weight:600;letter-spacing:-0.01em;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:22px;font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.04em;text-transform:uppercase;color:var(--muted);}
.nav a{transition:color .2s;}
.nav a:hover,.nav a.active{color:var(--ink);}
.nav a.cv{color:var(--ink);border:1px solid var(--ink);border-radius:999px;padding:7px 16px;}
.nav a.cv:hover{background:var(--ink);color:var(--paper);}

/* ---- Buttons / chips / tags ---- */
.btn{display:inline-block;font-weight:600;font-size:15px;padding:13px 24px;border-radius:999px;transition:transform .2s,filter .2s,background .2s,color .2s;}
.btn-clay{background:var(--clay);color:var(--cream);}
.btn-forest{background:var(--forest2);color:var(--cream);}
.btn-ocean{background:var(--ocean);color:var(--cream);}
.btn-clay:hover,.btn-forest:hover,.btn-ocean:hover{filter:brightness(1.08);transform:translateY(-2px);}
.btn-outline{border:1px solid var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:var(--paper);}
.pill{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.04em;border:1px solid var(--line);border-radius:999px;padding:6px 13px;color:var(--muted);transition:all .2s;}
.pill:hover{border-color:var(--ink);color:var(--ink);}
.tag{font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:0.04em;text-transform:uppercase;padding:4px 10px;border-radius:999px;}
.tag-forest{color:var(--forest2);background:rgba(46,96,72,0.09);}
.tag-ocean{color:var(--ocean);background:rgba(44,92,112,0.10);}
.tag-clay{color:var(--clay);background:rgba(156,82,52,0.10);}
.tag-line{color:var(--muted);border:1px solid var(--line);}

.chip{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:0.05em;text-transform:uppercase;padding:5px 11px;border-radius:999px;}
.chip-jmp{color:var(--cream);background:var(--clay);}
.chip-published{color:var(--forest2);background:rgba(46,96,72,0.10);}
.chip-rr{color:var(--ocean);background:rgba(44,92,112,0.10);}
.chip-wp{color:var(--muted);border:1px solid var(--line);}
.chip-wip{color:var(--muted);border:1px dashed var(--line);}

/* ---- Hero ---- */
.hero{background:var(--forest);color:var(--cream);position:relative;
  background-image:radial-gradient(rgba(243,239,228,0.11) 1px,transparent 1.4px);background-size:24px 24px;}
.hero .grid{display:grid;grid-template-columns:1.35fr 0.95fr;gap:72px;align-items:center;padding:96px 40px 104px;}
.hero .eyebrow{color:var(--clay);margin-bottom:26px;}
.hero h1{font-weight:500;font-size:clamp(38px,5.2vw,66px);line-height:1.04;letter-spacing:-0.018em;margin-bottom:28px;}
.hero h1 em{font-style:italic;color:#B8D4A8;}
.hero .lede{font-size:18px;line-height:1.6;color:rgba(243,239,228,0.74);max-width:560px;margin-bottom:38px;}
.hero .lede strong{color:var(--cream);font-weight:600;}
.hero .actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero .actions .btn-ghost{border:1px solid rgba(243,239,228,0.4);color:var(--cream);font-weight:500;padding:14px 26px;border-radius:999px;transition:all .2s;}
.hero .actions .btn-ghost:hover{border-color:var(--cream);background:rgba(243,239,228,0.06);}
.hero .meta{margin-top:44px;display:flex;gap:28px;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.08em;color:rgba(243,239,228,0.5);text-transform:uppercase;}
.hero .meta .accent{color:var(--clay);}
.portrait{position:relative;justify-self:center;}
.portrait .frame{position:absolute;inset:18px -18px -18px 18px;border:1.5px solid var(--clay);border-radius:6px;}
.portrait .pic{position:relative;background:#2A3A31;border-radius:6px;overflow:hidden;box-shadow:0 30px 60px -20px rgba(0,0,0,0.5);}
.portrait .pic img{width:300px;height:360px;object-fit:cover;}
.portrait .caption{position:relative;margin-top:22px;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.06em;color:rgba(243,239,228,0.55);text-align:center;}

/* ---- Sections ---- */
.section{padding-top:96px;padding-bottom:40px;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:48px;}
.section-head h2{font-weight:500;font-size:clamp(30px,3.6vw,44px);}
.section-head .eyebrow{margin-bottom:14px;}
.section-link{font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:0.06em;color:var(--forest2);border-bottom:1px solid var(--forest2);padding-bottom:2px;}
.page-head{padding:84px 40px 48px;border-bottom:1px solid var(--line);}
.page-head .eyebrow{margin-bottom:20px;}
.page-head h1{font-weight:500;font-size:clamp(38px,5.4vw,62px);line-height:1.04;letter-spacing:-0.018em;max-width:820px;margin-bottom:24px;}
.page-head .lede{font-size:18px;color:var(--muted);max-width:620px;line-height:1.6;}

/* ---- Research cards ---- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:34px 32px;transition:transform .25s,box-shadow .25s;}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(35,38,31,0.3);}
.card .num{font-family:'IBM Plex Mono',monospace;font-size:13px;margin-bottom:18px;}
.card h3{font-size:24px;margin-bottom:12px;}
.card p{color:var(--muted);font-size:15.5px;line-height:1.6;}

/* ---- List rows (publications / talks / teaching) ---- */
.rows{border-top:1px solid var(--line);}
.row{display:grid;grid-template-columns:150px 1fr auto;gap:32px;align-items:start;padding:30px 8px;border-bottom:1px solid var(--line);transition:background .2s,padding .2s;}
.row:hover{background:#fff;padding-left:18px;padding-right:18px;}
.row .when{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.05em;text-transform:uppercase;padding-top:5px;}
.row .when .yr{color:var(--muted);}
.row h3{font-weight:600;font-size:23px;line-height:1.25;margin-bottom:8px;}
.row .authors{color:var(--muted);font-size:14.5px;margin-bottom:6px;}
.row .authors a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:2px;transition:color .15s;}
.row .authors a:hover{color:var(--clay);text-decoration-color:var(--clay);}
.row .desc{color:var(--ink);font-size:15px;line-height:1.55;max-width:680px;}
.row .badges{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:9px;}
.row .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
.row .links{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;font-family:'IBM Plex Mono',monospace;font-size:11px;}
.row .arrow{font-family:'IBM Plex Mono',monospace;font-size:18px;color:var(--muted);padding-top:4px;}
.row a:hover h3{color:var(--clay);}
.group-label{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.1em;text-transform:uppercase;margin-bottom:6px;}

/* ---- Post grid ---- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px 26px;}
.post-card{display:block;transition:transform .25s;}
.post-card:hover{transform:translateY(-5px);}
.post-card .thumb{border-radius:9px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;margin-bottom:16px;background:#fff;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;}
.post-card .date{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.05em;color:var(--muted);margin-bottom:8px;}
.post-card h2,.post-card h3{font-weight:600;font-size:21px;line-height:1.25;margin-bottom:7px;}
.post-card p{font-size:14.5px;color:var(--muted);line-height:1.5;}

/* ---- Writing section on dark (homepage) ---- */
.section-dark{background:var(--forest);color:var(--cream);}
.section-dark .eyebrow{color:#B8D4A8;}
.section-dark .section-link{color:#B8D4A8;border-color:#B8D4A8;}
.section-dark .post-card .thumb{border-color:rgba(243,239,228,0.15);background:#2A3A31;}
.section-dark .post-card .date{color:rgba(243,239,228,0.5);}
.section-dark .post-card p{color:rgba(243,239,228,0.62);}

/* ---- About ---- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:72px;}
.about h2{font-weight:500;font-size:clamp(28px,3.4vw,40px);line-height:1.15;margin-bottom:24px;}
.about p{color:var(--muted);font-size:16px;line-height:1.65;margin-bottom:18px;}
.about .socials{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;}
.about .socials a{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:9px 16px;transition:all .2s;}
.about .socials a:hover{border-color:var(--ink);}
.timeline{border-left:2px solid var(--line);padding-left:26px;display:flex;flex-direction:column;gap:28px;margin-bottom:44px;}
.timeline .item{position:relative;}
.timeline .item .node{position:absolute;left:-33px;top:5px;width:11px;height:11px;border-radius:50%;border:2px solid var(--paper);}
.timeline .when{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.04em;margin-bottom:5px;}
.timeline .role{font-family:'Newsreader',serif;font-size:19px;font-weight:600;}
.timeline .org{color:var(--muted);font-size:14.5px;}
.sublabel{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.1em;text-transform:uppercase;color:var(--muted);margin-bottom:18px;}
.edu .erow{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:14px;}
.edu .erow:last-child{border-bottom:0;}
.edu .erow .yr{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);white-space:nowrap;}

/* ---- Contact ---- */
.contact{background:var(--ocean);color:var(--cream);}
.contact .grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;padding:88px 40px;}
.contact .eyebrow{color:rgba(243,239,228,0.7);}
.contact h2{font-weight:500;font-size:clamp(32px,4vw,52px);line-height:1.05;margin-bottom:20px;}
.contact .lede{font-size:16px;color:rgba(243,239,228,0.8);max-width:440px;}
.contact .card2{background:rgba(243,239,228,0.10);border:1px solid rgba(243,239,228,0.25);border-radius:12px;padding:30px;}
.contact .card2 .lab{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:rgba(243,239,228,0.6);margin-bottom:8px;}
.contact .card2 .email{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;}
.contact .card2 .email a{font-size:17px;font-weight:600;word-break:break-all;}
.copy-btn{flex-shrink:0;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.04em;background:var(--cream);color:var(--ocean);border:none;border-radius:999px;padding:8px 14px;cursor:pointer;font-weight:600;}
.contact .card2 .addr{font-size:15px;color:rgba(243,239,228,0.92);line-height:1.5;}

/* ---- App cards ---- */
.app{display:grid;grid-template-columns:1.08fr 0.92fr;gap:44px;align-items:center;}
.app + .app{margin-top:64px;}
.app .preview{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 24px 50px -30px rgba(27,38,32,0.4);}
.app .chrome{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid var(--line);background:#F6F7F2;}
.app .chrome i{width:10px;height:10px;border-radius:50%;display:inline-block;}
.app .chrome .url{margin-left:10px;font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.app .stage{position:relative;height:360px;background:#fff;}
.app .stage iframe{width:100%;height:100%;border:0;display:block;}
.app .stage .open-overlay{position:absolute;inset:0;}
.app h2{font-size:34px;margin-bottom:14px;}
.app .lede{font-size:16.5px;color:var(--ink);line-height:1.6;margin-bottom:16px;}
.app .techs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px;}

/* ---- Article (single) ---- */
.article{max-width:760px;margin:0 auto;padding:48px 40px 0;}
.article .back{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.04em;color:var(--muted);}
.article .back:hover{color:var(--ink);}
.article h1{font-weight:500;font-size:clamp(30px,4.4vw,46px);line-height:1.08;margin:26px 0 18px;}
.article .byline{font-size:15px;color:var(--muted);margin-bottom:26px;}
.article .prose{font-size:17px;line-height:1.72;}
.article .prose p{margin-bottom:18px;}
.article .prose h2{font-size:26px;margin:36px 0 14px;}
.article .prose h3{font-size:21px;margin:28px 0 12px;}
.article .prose a{color:var(--clay);text-decoration:underline;text-underline-offset:2px;}
.article .prose img{border:1px solid var(--line);border-radius:10px;margin:24px 0;}
.article .prose ul,.article .prose ol{margin:0 0 18px 22px;}
.article .figure{max-width:880px;margin:0 auto;padding:0 40px;}
.article .figure .box{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 24px 50px -34px rgba(27,38,32,0.5);}
.cite-box{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px 22px;font-family:'IBM Plex Mono',monospace;font-size:12.5px;line-height:1.7;color:var(--ink);}

/* ---- Post gallery ---- */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:32px 0 8px;}
.gallery a{display:block;border-radius:9px;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:#fff;}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.gallery a:hover img{transform:scale(1.04);}
@media (max-width:560px){.gallery{grid-template-columns:1fr;}}

/* ---- Footer ---- */
.site-footer{background:var(--forest);color:rgba(240,242,234,0.6);}
.site-footer .bar{padding:38px 40px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px;font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:0.04em;}
.site-footer a{transition:color .2s;}
.site-footer a:hover{color:var(--cream);}
.site-footer .links{display:flex;gap:22px;}

/* ---- Responsive ---- */
@media (max-width:880px){
  .hero .grid,.about,.contact .grid{grid-template-columns:1fr;gap:48px;}
  .cards{grid-template-columns:1fr;}
  .app{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .wrap,.wrap-wide{padding-left:22px;padding-right:22px;}
  .nav{display:none;}
  .row{grid-template-columns:1fr;gap:10px;}
  .row .arrow{display:none;}
  .post-grid{grid-template-columns:1fr;}
}