/* =========================================================
   muktijuddho.org design system  ·  v1
   Fonts: Anek Bangla (display) · Noto Sans Bengali (Bangla body)
          Manrope (English) · Tiro Bangla (quotes from source documents)
   Theme: "মুক্তির রাত" — deep green night, red sun, gold. Dark-first,
          light variant follows the visitor's system or the toggle.
   ========================================================= */
:root{
  /* colour — dark (default). "দিগন্ত" identity: bottle green, crimson sun, old gold, paper */
  --bg:#07130E; --bg2:#0C1B15; --surf:#0F2019; --glass:rgba(9,22,17,.82);
  --ink:#EFE8D8; --mute:#A3B0A6; --line:rgba(239,232,216,.12);
  --green:#4FB38C; --on-green:#04140D; --red:#D3304A; --on-red:#FFFFFF; --gold:#C9A04A; --on-gold:#1B1406;
  --sun:#D3304A; --logo:#EFE8D8; --land:#0B3D2E;
  --paper:#EDE5D4; --paper-ink:#2A2218;           /* only behind scanned documents */
  /* type: serif headings echo the wordmark; sans body for long reading */
  --f-disp:"Noto Serif Bengali","Newsreader",Georgia,serif;
  --f-body:"Noto Sans Bengali","Manrope",system-ui,sans-serif;
  --f-quote:"Tiro Bangla","Noto Serif Bengali",Georgia,serif;
  --fs-body:18px; --lh-body:1.75;
  --fs-h1:clamp(36px,6vw,78px); --fs-h2:clamp(24px,2.6vw,32px); --fs-h3:20px; --fs-small:14px;
  /* layout */
  --wide:1240px; --read:68ch; --r:6px;
  color-scheme:dark;
}
html[lang="en"]{ --f-body:"Manrope","Noto Sans Bengali",system-ui,sans-serif; --f-disp:"Newsreader","Noto Serif Bengali",Georgia,serif; --fs-body:17px; --lh-body:1.65 }
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]){
  --bg:#F3EEE3; --bg2:#EAE3D3; --surf:#FBF8F1; --glass:rgba(243,238,227,.86);
  --ink:#14201B; --mute:#5B6660; --line:rgba(20,32,27,.14);
  --green:#0B5E43; --on-green:#FFFFFF; --red:#B31B34; --on-red:#FFFFFF; --gold:#8A6A1E; --on-gold:#FFFFFF;
  --sun:#B31B34; --logo:#0B3D2E; --land:#0B3D2E; color-scheme:light}}
:root[data-theme="light"]{
  --bg:#F3EEE3; --bg2:#EAE3D3; --surf:#FBF8F1; --glass:rgba(243,238,227,.86);
  --ink:#14201B; --mute:#5B6660; --line:rgba(20,32,27,.14);
  --green:#0B5E43; --on-green:#FFFFFF; --red:#B31B34; --on-red:#FFFFFF; --gold:#8A6A1E; --on-gold:#FFFFFF;
  --sun:#B31B34; --logo:#0B3D2E; --land:#0B3D2E; color-scheme:light}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:var(--fs-body)/var(--lh-body) var(--f-body)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--bg)}
img{max-width:100%;height:auto}
a{color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}
button{font:inherit;color:inherit}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:var(--on-gold);padding:8px 12px;border-radius:8px;z-index:99}
.skip:focus{left:12px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

.wrap{max-width:var(--wide);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;gap:14px;height:72px}
.mark{display:flex;align-items:center;text-decoration:none;color:var(--logo);flex:none}
.mark svg{display:block;height:50px;width:auto}
.mark .lg-s{fill:var(--sun)} .mark .lg-r{stroke:var(--sun)}
.nav{display:flex;gap:4px;margin-left:20px;padding-left:20px;border-left:1px solid var(--line);flex:1;min-width:0}
.nav a{text-decoration:none;color:var(--mute);font-size:15px;padding:6px 10px;border-radius:8px;white-space:nowrap}
.nav a:hover{color:var(--ink);background:color-mix(in srgb,var(--ink) 6%,transparent)}
.nav a[aria-current="page"]{color:var(--ink);font-weight:600}
.tools{display:flex;gap:8px;margin-left:auto}
.ib{height:38px;min-width:38px;padding:0 10px;border-radius:6px;border:1px solid var(--line);background:none;cursor:pointer;display:grid;place-items:center;font:600 13px var(--f-body);text-decoration:none}
.ib svg{width:18px;height:18px}
.menu-btn{display:none}
@media (max-width:820px){
  .menu-btn{display:grid}
  .nav{position:absolute;top:72px;left:0;right:0;margin:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px max(20px,env(safe-area-inset-left,0px)) 14px}
  .nav a{padding:12px 4px;font-size:17px;border-radius:0;border-bottom:1px solid var(--line)}
  .bar:not(.open) .nav{display:none}
}

/* ---------- buttons, chips, labels ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:4px;padding:12px 18px;font-weight:700;font-size:16px;text-decoration:none;border:1px solid var(--line);background:color-mix(in srgb,var(--ink) 6%,transparent);cursor:pointer}
.btn.primary{background:var(--red);border-color:var(--red);color:var(--on-red)}
.kicker{display:inline-flex;gap:8px;align-items:center;font:600 13px var(--f-body);letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}
.chip{display:inline-block;border:1px solid var(--line);border-radius:4px;padding:5px 13px;font-size:14px;color:var(--mute);text-decoration:none;background:none;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:var(--on-green)}
.badge{display:inline-block;font:700 13px var(--f-body);background:var(--gold);color:var(--on-gold);border-radius:999px;padding:3px 12px}
.date{display:inline-block;font:600 14px var(--f-body);background:color-mix(in srgb,var(--red) 15%,transparent);color:var(--red);border-radius:7px;padding:3px 10px}
.crumb{font-size:14px;color:var(--mute);padding-top:26px}
.crumb a{text-decoration:none}
.crumb a:hover{text-decoration:underline}
.crumb [aria-current]{color:var(--green);font-weight:600}

/* ---------- hero (home) ---------- */
.hero{position:relative;overflow:hidden}
.hero canvas{position:absolute;inset:0;width:100%;height:100%}
.hero .wrap{position:relative;width:100%;padding-block:clamp(64px,10vw,120px) 56px}
.hero .hz{height:9px;margin:44px 0 30px}
.hero .copy{max-width:min(640px,60%)}
.hero .hz-m{display:none}
@media (max-width:760px){.hero .copy{max-width:none}.hero .wrap{padding-top:clamp(130px,40vw,190px)}.hero .hz-m{display:block;margin:0 0 34px}.hero .hz:not(.hz-m){height:0;margin:36px 0 0}}
.hero h1{font:700 var(--fs-h1)/1.12 var(--f-disp);letter-spacing:-.01em;margin:16px 0 16px;max-width:13ch;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--red)}
.hero .lead{font-size:clamp(17px,1.6vw,20px);color:var(--mute);max-width:54ch;margin:0 0 28px}
.cta{display:flex;gap:10px;flex-wrap:wrap}
.stats{display:flex;gap:40px;flex-wrap:wrap}
.stats b{display:block;font:700 32px/1 var(--f-disp)}
.stats span{font-size:14px;color:var(--mute)}

/* ---------- sections ---------- */
.sec{padding-block:56px}
.sec h2{font:700 var(--fs-h2)/1.25 var(--f-disp);margin:0 0 8px;text-wrap:balance}
.sec .intro{color:var(--mute);margin:0 0 24px;max-width:60ch}
.eras{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.era{display:block;text-decoration:none;background:var(--surf);border:1px solid var(--line);border-radius:var(--r);padding:20px;transition:border-color .2s,transform .2s}
.era:hover{border-color:color-mix(in srgb,var(--green) 60%,var(--line));transform:translateY(-2px)}
.era .y{font:600 14px var(--f-body);color:var(--green)}
.era h3{font:700 var(--fs-h3)/1.3 var(--f-disp);margin:6px 0 6px}
.era p{margin:0;font-size:15px;line-height:1.6;color:var(--mute)}
.days{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.day{background:var(--bg2);padding:18px 20px;text-decoration:none}
.day .date{margin-bottom:8px}
.day h3{font:700 18px/1.35 var(--f-disp);margin:0 0 4px}
.day p{margin:0;font-size:15px;color:var(--mute);line-height:1.6}

/* ---------- article (event) ---------- */
.article{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;padding-block:12px 64px}
@media (max-width:860px){.article{grid-template-columns:minmax(0,1fr)}}
.article h1,.person h1{font:700 clamp(32px,4.6vw,54px)/1.1 var(--f-disp);margin:12px 0 10px;text-wrap:balance}
.byline{font-size:14px;color:var(--mute);margin-bottom:28px}
.prose{max-width:var(--read)}
.prose p{margin:0 0 20px}
.prose h2{font:700 24px/1.3 var(--f-disp);margin:36px 0 12px}
blockquote.source{margin:30px 0;padding:6px 0 6px 22px;border-left:3px solid var(--red);font:400 clamp(21px,2.2vw,26px)/1.55 var(--f-quote);max-width:32ch}
blockquote.source footer{font:500 14px var(--f-body);color:var(--mute);margin-top:8px}
.factbox{background:var(--surf);border:1px solid var(--line);border-radius:var(--r);padding:20px;align-self:start;position:sticky;top:90px}
@media (max-width:860px){.factbox{position:static}}
.factbox h2{margin:0 0 12px;font:700 13px var(--f-body);letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}
.factbox dl{margin:0;display:grid;gap:12px}
.factbox dt{color:var(--mute);font-size:13px}
.factbox dd{margin:0;font-weight:600;font-size:16px;line-height:1.45}
.sources{font-size:14px;color:var(--mute);border-top:1px solid var(--line);padding-top:16px;margin-top:32px;max-width:var(--read)}
.sources ol{margin:6px 0 0;padding-left:20px}
.pager{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:32px;max-width:var(--read)}
.pager a{text-decoration:none;border:1px solid var(--line);border-radius:12px;padding:12px 16px;font-size:15px;flex:1 1 220px}
.pager small{display:block;color:var(--mute);font-size:13px}

/* ---------- person ---------- */
.person{display:grid;grid-template-columns:240px minmax(0,1fr);gap:36px;align-items:end;padding-block:36px 8px}
@media (max-width:700px){.person{grid-template-columns:minmax(0,1fr)}.portrait{max-width:220px}}
.portrait{aspect-ratio:4/5;border-radius:16px;border:1px solid var(--line);background:repeating-linear-gradient(135deg,var(--surf) 0 10px,color-mix(in srgb,var(--green) 14%,var(--surf)) 10px 20px);display:grid;place-items:center;font:700 64px var(--f-disp);color:var(--green)}
.portrait small{display:block;font:500 12px var(--f-body);color:var(--mute);text-align:center}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-block:24px 36px}
.facts div{background:var(--surf);padding:14px 16px}
.facts small{display:block;color:var(--mute);font-size:13px}
.facts b{font:700 17px/1.4 var(--f-disp)}

/* ---------- archive ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding-block:28px 20px}
.search{flex:1 1 260px;display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surf);border-radius:6px;padding:0 12px}
.search input{flex:1;min-width:0;border:0;background:none;color:var(--ink);font:inherit;font-size:16px;padding:11px 0;outline:none}
.search svg{width:18px;height:18px;color:var(--mute)}
.items{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;padding-bottom:64px}
.item{display:block;text-decoration:none;background:var(--surf);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .2s}
.item:hover{border-color:color-mix(in srgb,var(--green) 60%,var(--line))}
.thumb{height:120px;display:grid;place-items:end start;padding:10px}
.thumb span{font:700 12px var(--f-body);background:var(--bg);color:var(--ink);border-radius:6px;padding:2px 8px}
.thumb.doc{background:var(--paper);background-image:repeating-linear-gradient(0deg,rgba(42,34,24,.14) 0 1px,transparent 1px 11px)}
.thumb.audio{background:var(--surf);background-image:repeating-linear-gradient(90deg,color-mix(in srgb,var(--green) 55%,transparent) 0 2px,transparent 2px 7px);background-size:100% 40%;background-repeat:no-repeat;background-position:center}
.thumb.photo{background:linear-gradient(160deg,color-mix(in srgb,var(--ink) 22%,var(--surf)),color-mix(in srgb,var(--ink) 6%,var(--surf)));box-shadow:inset 0 0 0 8px var(--surf),inset 0 0 0 9px var(--line)}
.thumb.news{background:var(--paper);background-image:repeating-linear-gradient(90deg,rgba(42,34,24,.16) 0 30%,transparent 30% 34%)}
.item .t{padding:12px 14px 14px}
.item h3{margin:0 0 4px;font:700 17px/1.35 var(--f-disp)}
.item small{color:var(--mute);font-size:13.5px}
.empty{color:var(--mute);padding:20px 0 60px}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding-block:28px 40px;font-size:14px;color:var(--mute)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
.foot a{text-decoration:none}
.foot a:hover{text-decoration:underline}

/* Bangla script breaks apart with letter-spacing and has no capitals: reset both for Bangla pages */
html[lang="bn"] .kicker, html[lang="bn"] .factbox h2{letter-spacing:0;text-transform:none;font-size:14px}

/* দিগন্ত: the horizon rule — a thin matra-like line used as the section divider */
.horizon-rule{height:5px;background:var(--logo);width:72px;margin:0 0 18px;position:relative}
.horizon-rule::before{content:"";position:absolute;left:14px;bottom:5px;width:22px;height:11px;border-radius:22px 22px 0 0;background:var(--sun)}
@media (max-width:820px){.mark svg{height:36px}}