/* =======================================================================
   Academic Green — design system for patoary.com
   Edit the colour tokens below and the whole site changes.
   ======================================================================= */

:root{
  --ink:#14261E; --ink-soft:#4A5A52; --green:#1F5F4B; --green-deep:#123B2F;
  --green-mist:#EAF2EE; --gold:#C08A2E; --gold-ink:#8A6220; --gold-mist:#FCF8F1;
  --line:#DCE5E0; --paper:#FFFFFF; --paper-alt:#F7FAF8; --shadow:rgba(20,38,30,.10);
  --wrap:1140px; --radius:10px;
}
:root[data-theme="dark"]{
  --ink:#E8EFEB; --ink-soft:#A3B3AB; --green:#6DBF9F; --green-deep:#0B120F;
  --green-mist:#1C2A24; --gold:#D9A94A; --gold-ink:#D9A94A; --gold-mist:#231D12;
  --line:#2A3832; --paper:#0F1714; --paper-alt:#16211D; --shadow:rgba(0,0,0,.5);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink:#E8EFEB; --ink-soft:#A3B3AB; --green:#6DBF9F; --green-deep:#0B120F;
    --green-mist:#1C2A24; --gold:#D9A94A; --gold-ink:#D9A94A; --gold-mist:#231D12;
    --line:#2A3832; --paper:#0F1714; --paper-alt:#16211D; --shadow:rgba(0,0,0,.5);
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:Inter,"Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:1.0625rem;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:"Source Serif 4",Lora,Georgia,serif;font-weight:400;line-height:1.22;margin:0}
h1{font-size:clamp(2rem,4vw,3rem)} h2{font-size:clamp(1.5rem,2.5vw,2rem)}
h3{font-size:1.25rem} h4{font-size:1.0625rem;font-weight:600;font-family:inherit}
p{margin:0 0 1em}
a{color:var(--green);text-underline-offset:3px}
a:hover{color:var(--gold)}
img{max-width:100%;height:auto;display:block}
[lang="bn"]{font-family:"Noto Sans Bengali",Inter,sans-serif}
em,cite{font-family:"Source Serif 4",Georgia,serif;font-style:italic}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:3px}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.prose{max-width:72ch}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:100;background:var(--green);color:#fff;padding:10px 16px;border-radius:8px}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:40;background:var(--paper);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand .mono{width:32px;height:32px;border-radius:7px;background:var(--green);color:#fff;
  display:grid;place-items:center;font:700 13px "Source Serif 4",Georgia,serif}
.brand .nm{font:600 14px Inter,sans-serif;white-space:nowrap}
.nav{display:flex;gap:2px;align-items:center;margin-left:auto;flex-wrap:nowrap}
.nav a{padding:7px 10px;border-radius:7px;font:500 13.5px Inter,sans-serif;color:var(--ink-soft);text-decoration:none;white-space:nowrap}
.nav a:hover{background:var(--green-mist);color:var(--green)}
.nav a[aria-current="page"]{background:var(--green-mist);color:var(--green);font-weight:600}
.head-tools{display:flex;align-items:center;gap:8px;flex:none;padding-left:10px;border-left:1px solid var(--line)}
.icon-btn{width:34px;height:34px;border:1px solid var(--line);background:var(--paper-alt);border-radius:8px;
  cursor:pointer;display:grid;place-items:center;color:var(--ink)}
.icon-btn:hover{border-color:var(--green)}
.burger{display:none}
.burger span{display:block;width:15px;height:2px;background:var(--ink);box-shadow:0 5px 0 var(--ink),0 -5px 0 var(--ink)}
@media(max-width:1180px){ .nav{display:none} .burger{display:grid} }
@media(max-width:520px){ .brand .nm{display:none} }

.drawer{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.45);display:none}
.drawer[open],.drawer.show{display:block}
.drawer-panel{position:absolute;right:0;top:0;bottom:0;width:min(320px,86vw);background:var(--paper);
  padding:20px;overflow-y:auto;border-left:1px solid var(--line)}
.drawer-panel a{display:block;padding:12px 10px;border-radius:8px;text-decoration:none;color:var(--ink);font-weight:500}
.drawer-panel a:hover{background:var(--green-mist)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:8px;border:1px solid var(--green);
  background:var(--green);color:#fff;text-decoration:none;font:600 14px Inter,sans-serif;cursor:pointer;transition:.16s}
.btn:hover{background:var(--green-deep);border-color:var(--green-deep);color:#fff}
.btn-ghost{background:transparent;color:var(--green)}
.btn-ghost:hover{background:var(--green-mist);color:var(--green)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-danger{background:#B3261E;border-color:#B3261E}
.btn-danger:hover{background:#8C1D18;border-color:#8C1D18}

/* ---------- sections ---------- */
.section{padding:72px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}
.section.alt{background:var(--paper-alt)}
.eyebrow{font:600 11.5px Inter,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--green);margin:0 0 8px}
.sec-head{margin-bottom:36px}
.sec-head .rule{width:48px;height:3px;background:var(--green-mist);margin-top:14px;border-radius:2px}
.sec-head p.lede{color:var(--ink-soft);margin-top:10px;max-width:66ch}

/* ---------- hero ---------- */
.hero{padding:64px 0 56px;background:var(--paper-alt);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:center}
.hero-photo{width:220px;height:220px;border-radius:50%;object-fit:cover;border:4px solid var(--paper);
  box-shadow:0 8px 28px var(--shadow)}
.hero h1{margin-bottom:8px}
.hero .role{color:var(--green);font-weight:600;font-size:1.05rem}
.hero .org{color:var(--ink-soft);font-size:.95rem}
.hero .statement{margin:18px 0 22px;color:var(--ink-soft);max-width:60ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px}
.meta-row{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;font-size:.9rem;color:var(--ink-soft)}
.meta-row a{color:var(--ink-soft);text-decoration:none}
.meta-row a:hover{color:var(--green)}
@media(max-width:760px){
  .hero-grid{grid-template-columns:1fr;text-align:center;justify-items:center;gap:24px}
  .hero .statement{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .meta-row{justify-content:center}
}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:var(--paper);padding:22px 18px;text-align:center}
.stat b{display:block;font:400 2rem "Source Serif 4",Georgia,serif;color:var(--green);line-height:1}
.stat span{display:block;margin-top:6px;font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft)}

/* ---------- cards ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  border-left:3px solid transparent;transition:.18s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 22px var(--shadow);border-left-color:var(--green)}
.card h3{margin-bottom:6px;font-size:1.12rem}
.card .muted{color:var(--ink-soft);font-size:.9rem}
.card-flat:hover{transform:none;box-shadow:none;border-left-color:transparent}

.chip{display:inline-block;padding:4px 11px;border-radius:999px;background:var(--green-mist);color:var(--green);
  font:500 12.5px Inter,sans-serif;margin:0 6px 6px 0}
.chip-gold{background:var(--gold-mist);color:var(--gold-ink)}
.chip-line{background:transparent;border:1px solid var(--line);color:var(--ink-soft)}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:0}
.tl-item{display:grid;grid-template-columns:150px 1fr;gap:28px;padding:0 0 34px;position:relative}
.tl-when{font:600 13px Inter,sans-serif;color:var(--green);padding-top:2px}
.tl-when small{display:block;font-weight:400;color:var(--ink-soft);margin-top:2px}
.tl-body{position:relative;padding-left:28px;border-left:2px solid var(--line)}
.tl-body::before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--paper);border:3px solid var(--green)}
.tl-item:last-child .tl-body{border-left-color:transparent}
.tl-body h3{font-size:1.16rem;margin-bottom:2px}
.tl-org{color:var(--green);font-weight:600;font-size:.95rem}
.tl-place{color:var(--ink-soft);font-size:.87rem;margin-bottom:10px}
@media(max-width:700px){
  .tl-item{grid-template-columns:1fr;gap:6px}
  .tl-when{padding-left:28px}
  .tl-body{padding-left:28px}
}

/* ---------- publications ---------- */
.pub-tools{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;align-items:center}
.pub-tools input[type=search]{flex:1 1 260px;width:auto;min-width:200px}
.pub-tools select{flex:0 0 auto;width:auto;min-width:150px}
.pub-tools input[type=search],.pub-tools select{padding:9px 12px;border:1px solid var(--line);border-radius:8px;
  background:var(--paper);color:var(--ink);font:400 14px Inter,sans-serif}
.pub-list{list-style:none;margin:0;padding:0;counter-reset:pub}
.pub{display:grid;grid-template-columns:36px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.pub::before{counter-increment:pub;content:counter(pub) ".";font:600 14px Inter,sans-serif;color:var(--ink-soft);padding-top:3px}
.pub-title{font-weight:600;display:block;margin:2px 0 4px}
.pub-meta{color:var(--ink-soft);font-size:.92rem}
.pub-links{margin-top:8px;display:flex;flex-wrap:wrap;gap:8px}
.pub-links a,.pub-links button{font:500 12.5px Inter,sans-serif;padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper-alt);color:var(--ink-soft);text-decoration:none;cursor:pointer}
.pub-links a:hover,.pub-links button:hover{border-color:var(--green);color:var(--green)}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;border-bottom:1px solid var(--line);padding-bottom:14px}
.tabs a{padding:8px 14px;border-radius:8px;text-decoration:none;font:600 13.5px Inter,sans-serif;color:var(--ink-soft)}
.tabs a:hover{background:var(--green-mist);color:var(--green)}
.tabs a.on{background:var(--green);color:#fff}
.tabs a .n{opacity:.7;font-weight:400}
.tabs a.on .n{opacity:.85}

/* ---------- tables ---------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.data{width:100%;border-collapse:collapse;font-size:.95rem;min-width:520px}
table.data th,table.data td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.data th{font:600 12.5px Inter,sans-serif;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-soft);
  background:var(--paper-alt)}
table.data tbody tr:hover{background:var(--green-mist)}
table.data ul{margin:0;padding-left:18px}
table.data li{margin-bottom:4px}

/* ---------- accordion ---------- */
details.acc{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px;background:var(--paper);overflow:hidden}
details.acc summary{cursor:pointer;padding:15px 18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:14px}
details.acc summary::-webkit-details-marker{display:none}
details.acc summary::after{content:"+";color:var(--green);font-size:1.2rem;line-height:1}
details.acc[open] summary::after{content:"–"}
details.acc summary:hover{background:var(--green-mist)}
details.acc .acc-body{padding:4px 18px 18px;border-top:1px solid var(--line)}

/* ---------- gallery ---------- */
.gal-tabs{display:flex;gap:8px;margin-bottom:18px}
.gal-filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.filter-pill{padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:var(--paper);
  color:var(--ink-soft);font:500 13px Inter,sans-serif;cursor:pointer;text-decoration:none}
.filter-pill:hover{border-color:var(--green);color:var(--green)}
.filter-pill.on{background:var(--green);border-color:var(--green);color:#fff}
.masonry{columns:3 280px;column-gap:16px}
.masonry figure{break-inside:avoid;margin:0 0 16px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--paper);cursor:zoom-in;position:relative}
.masonry img{width:100%;display:block;transition:.3s}
.masonry figure:hover img{transform:scale(1.03)}
.masonry figcaption{padding:10px 12px;font-size:.85rem;color:var(--ink-soft);border-top:1px solid var(--line)}
.vid-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.vid{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper)}
.vid .thumb{position:relative;aspect-ratio:16/9;background:var(--green-mist);cursor:pointer;display:block;border:0;padding:0;width:100%}
.vid .thumb img{width:100%;height:100%;object-fit:cover}
.vid .play{position:absolute;inset:0;display:grid;place-items:center}
.vid .play span{width:54px;height:54px;border-radius:50%;background:rgba(18,59,47,.86);display:grid;place-items:center}
.vid .play span::after{content:"";border-left:16px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.vid .info{padding:14px 16px}
.vid .info h3{font-size:1rem;margin-bottom:4px}
.vid iframe,.vid video{width:100%;aspect-ratio:16/9;border:0;display:block;background:#000}

.lightbox{position:fixed;inset:0;background:rgba(8,16,13,.94);z-index:90;display:none;place-items:center;padding:24px}
.lightbox.show{display:grid}
.lightbox img{max-width:min(1200px,94vw);max-height:78vh;object-fit:contain;border-radius:6px}
.lb-cap{color:#D7E3DD;text-align:center;margin-top:16px;font-size:.92rem;max-width:70ch}
.lb-cap b{display:block;color:#fff;font-size:1.05rem;margin-bottom:4px}
.lb-btn{position:absolute;background:rgba(255,255,255,.12);border:0;color:#fff;width:48px;height:48px;
  border-radius:50%;font-size:24px;cursor:pointer;display:grid;place-items:center}
.lb-btn:hover{background:rgba(255,255,255,.25)}
.lb-prev{left:18px;top:50%;transform:translateY(-50%)}
.lb-next{right:18px;top:50%;transform:translateY(-50%)}
.lb-close{right:18px;top:18px}

/* ---------- forms ---------- */
.field{margin-bottom:18px}
.field label{display:block;font:600 13px Inter,sans-serif;margin-bottom:6px}
.field .hint{font-size:.82rem;color:var(--ink-soft);margin-top:5px}
input[type=text],input[type=email],input[type=url],input[type=number],input[type=date],input[type=password],
input[type=search],textarea,select{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:8px;background:var(--paper);
  color:var(--ink);font:400 15px Inter,sans-serif}
textarea{min-height:130px;resize:vertical;line-height:1.6}
input:focus,textarea:focus,select:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px var(--green-mist)}
.flash{padding:13px 16px;border-radius:8px;background:var(--green-mist);color:var(--green-deep);
  border:1px solid var(--green);margin-bottom:20px;font-size:.93rem}
:root[data-theme="dark"] .flash{color:var(--ink)}
.flash-err{background:#FDECEA;border-color:#B3261E;color:#8C1D18}

/* ---------- footer ---------- */
.site-foot{background:var(--green-deep);color:#CFE0D8;padding:56px 0 28px;margin-top:0}
.site-foot a{color:#CFE0D8;text-decoration:none}
.site-foot a:hover{color:var(--gold)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;margin-bottom:32px}
.site-foot h4{color:#fff;font:600 13px Inter,sans-serif;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin-bottom:9px;font-size:.9rem}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:.83rem;color:#9FBCB0}
@media(max-width:760px){ .foot-grid{grid-template-columns:1fr;gap:28px} }

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:none;transition:opacity .35s ease,transform .35s ease}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- print ---------- */
@media print{
  .site-head,.site-foot,.hero-actions,.pub-tools,.gal-tabs,.gal-filters,.icon-btn,.no-print{display:none!important}
  body{font-size:10.5pt;color:#000;background:#fff}
  .section{padding:14pt 0;border-top:1px solid #ccc;break-inside:auto}
  .card,.tl-item{break-inside:avoid}
  a{color:#000;text-decoration:none}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:8pt;color:#555}
  .wrap{max-width:none;padding:0}
}