/* উঠোনবাড়ি — design system (research brief §4)
   Warm white bg, charcoal text, deep green #1F5C3D accent only, gold #C29A3B for prices/dividers.
   No full-page green. Mobile-first. */
:root{
  --bg:#FAF8F4; --card:#FFFFFF; --ink:#1E2422; --ink-soft:#4A5450;
  --green:#1F5C3D; --green-dark:#17452E; --gold:#C29A3B; --gold-soft:#EFE6D2;
  --line:#E5DFD3; --radius:16px;
  --shadow:0 6px 24px rgba(30,36,34,.08);
  --font-bn:'Hind Siliguri','Noto Sans Bengali',sans-serif;
  --font-body:'Noto Sans Bengali','Hind Siliguri',sans-serif;
  --font-en:'Inter',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16.5px;line-height:1.7;-webkit-font-smoothing:antialiased}
[lang="en"] body,body.en{font-family:var(--font-en)}
h1,h2,h3,h4{font-family:var(--font-bn);line-height:1.3;font-weight:700}
body.en h1,body.en h2,body.en h3,body.en h4{font-family:var(--font-en)}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:60;background:rgba(250,248,244,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;gap:14px;padding:10px 0}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.brand:hover{text-decoration:none}
.brand .mark{width:42px;height:42px;flex-shrink:0}
.brand .bname{font-family:var(--font-bn);font-size:26px;font-weight:700;line-height:1;color:var(--green-dark)}
body.en .brand .bname{font-family:var(--font-en);font-size:22px;letter-spacing:.2px}
.brand .bsub{font-size:11px;color:var(--ink-soft);letter-spacing:.4px}
nav.main{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
nav.main a{color:var(--ink);font-size:15px;padding:8px 10px;border-radius:10px;font-weight:500}
nav.main a:hover{background:var(--gold-soft);text-decoration:none}
nav.main a.active{color:var(--green);font-weight:700}
.lang-toggle{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;flex-shrink:0}
.lang-toggle a{padding:6px 12px;font-size:13.5px;color:var(--ink-soft);background:#fff}
.lang-toggle a.on{background:var(--green);color:#fff;font-weight:700}
.lang-toggle a:hover{text-decoration:none}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;padding:7px 12px;font-size:18px;cursor:pointer;color:var(--ink)}
@media(max-width:900px){
  nav.main{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:10px 18px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  nav.main.open{display:flex}
  .menu-btn{display:block}
  .header-in{flex-wrap:nowrap}
}

/* ---------- hero ---------- */
.hero{padding:44px 0 10px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr}}
.hero h1{font-size:clamp(30px,5.2vw,52px);margin-bottom:14px}
.hero h1 .accent{color:var(--green)}
.hero p.lead{font-size:18.5px;color:var(--ink-soft);max-width:34em;margin-bottom:22px}
.hero-art{position:relative;border-radius:22px;overflow:hidden;box-shadow:var(--shadow);background:#fff;border:1px solid var(--line)}
.hero-art img,.hero-art svg{width:100%;height:auto;display:block}
.render-tag{position:absolute;left:12px;bottom:12px;background:rgba(30,36,34,.82);color:#fff;font-size:12.5px;padding:4px 10px;border-radius:999px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:12px;font-weight:700;font-size:16px;border:1.5px solid var(--green);cursor:pointer;font-family:inherit}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.btn-ghost{background:#fff;color:var(--green)}
.btn-gold{background:var(--gold);border-color:var(--gold);color:#fff}
.btn-sm{padding:9px 16px;font-size:14.5px;border-radius:10px}
.search-bar{margin:26px 0 6px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:12px;display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:10px}
.search-bar select,.search-bar input{padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:15px;background:#fff;width:100%}
@media(max-width:760px){.search-bar{grid-template-columns:1fr 1fr}}

/* ---------- sections ---------- */
section.block{padding:46px 0}
.sec-head{margin-bottom:24px}
.sec-head .kicker{color:var(--gold);font-weight:700;letter-spacing:1.2px;font-size:13px;text-transform:uppercase}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);margin:4px 0 6px}
.sec-head p{color:var(--ink-soft);max-width:46em}
.gold-rule{width:64px;height:3px;background:var(--gold);border-radius:2px;margin-top:10px}

/* three doors */
.doors{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.doors{grid-template-columns:1fr}}
.door{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.door img.logo{height:120px;width:auto;object-fit:contain;align-self:flex-start}
.door h3{font-size:22px}
.door .legal{font-size:13px;color:var(--ink-soft)}
.door p{color:var(--ink-soft);font-size:15.5px;flex:1}
.door .tagline{color:var(--gold);font-weight:700;font-size:15px}

/* project cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:960px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.cards{grid-template-columns:1fr}}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.pcard .thumb{position:relative;aspect-ratio:16/9;background:#F1EDE3}
.pcard .thumb img,.pcard .thumb svg{width:100%;height:100%;object-fit:cover;display:block}
.badge{position:absolute;top:12px;left:12px;font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px;color:#fff;background:#5B7186}
.badge.booking{background:var(--gold)}
.badge.building{background:#2E7D74}
.badge.ready{background:var(--green)}
.badge.sold{background:#8A8A8A}
.pcard .body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.pcard h3{font-size:20px}
.pcard .loc{color:var(--ink-soft);font-size:14.5px}
.spec-row{display:flex;gap:14px;flex-wrap:wrap;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);padding:9px 0;font-size:14px;color:var(--ink)}
.spec-row span{display:inline-flex;align-items:center;gap:5px}
.spec-row svg{width:17px;height:17px;stroke:var(--green)}
.price{font-size:17px}
.price b{color:var(--gold);font-size:19px}
.pay-hint{font-size:14px;color:var(--green);font-weight:600}
.handover{font-size:14px;color:var(--ink-soft)}
.pcard .actions{display:flex;gap:10px;margin-top:auto;padding-top:8px}

/* trust band */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:960px){.trust{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.trust{grid-template-columns:1fr}}
.trust .t{background:#fff;border:1px solid var(--line);border-left:4px solid var(--green);border-radius:12px;padding:18px}
.trust .t h3{font-size:17.5px;margin-bottom:5px}
.trust .t p{font-size:14.5px;color:var(--ink-soft)}
.trust .t .ic{font-size:24px;margin-bottom:6px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
@media(max-width:960px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-align:left}
.step .n{width:36px;height:36px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:9px}
.step h3{font-size:16.5px;margin-bottom:4px}
.step p{font-size:14px;color:var(--ink-soft)}

/* area band / generic two-col */
.split{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
@media(max-width:860px){.split{grid-template-columns:1fr}}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:700px){.feat-grid{grid-template-columns:repeat(2,1fr)}}
.feat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center}
.feat .ic{font-size:26px}
.feat p{font-size:14.5px;font-weight:600;margin-top:4px}
.feat small{display:block;color:var(--ink-soft);font-weight:400}

/* updates */
.updates{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.updates{grid-template-columns:1fr}}
.update{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.update time{font-size:13px;color:var(--gold);font-weight:700}
.update h3{font-size:17px;margin:4px 0}
.update p{font-size:14.5px;color:var(--ink-soft)}

/* forms */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:620px){.form-grid{grid-template-columns:1fr}}
.field label{display:block;font-weight:600;font-size:14.5px;margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:15.5px;background:#fff}
.field.full{grid-column:1/-1}
.phone-row{display:flex;gap:8px}
.phone-row select{width:118px;flex-shrink:0}
.form-note{font-size:13.5px;color:var(--ink-soft);margin-top:10px}
.thanks{display:none;background:#EDF5EF;border:1px solid var(--green);color:var(--green-dark);border-radius:12px;padding:16px;margin-top:14px;font-weight:600}

/* content pages */
.page-hero{padding:40px 0 6px}
.page-hero h1{font-size:clamp(28px,4.4vw,42px)}
.page-hero p.lead{color:var(--ink-soft);font-size:18px;max-width:44em;margin-top:8px}
.page-logo{height:150px;width:auto;object-fit:contain;margin-bottom:8px}
.prose{max-width:52em}
.prose p{margin-bottom:14px;color:#2A322E}
.prose ul{margin:0 0 14px 1.2em}
.prose li{margin-bottom:7px}
.check-list{list-style:none;margin-left:0!important}
.check-list li{padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:9px}
.check-list li b{color:var(--green-dark)}
.legal-box{background:#fff;border:1.5px solid var(--gold);border-radius:var(--radius);padding:22px}
.legal-box h3{margin-bottom:8px}
.warn-box{background:#FBF4E4;border:1px solid var(--gold);border-radius:12px;padding:16px 18px;font-size:15px}
table.spec{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
table.spec th,table.spec td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:15px}
table.spec th{background:#F4F0E6;width:38%;font-weight:600}
.timeline{border-left:3px solid var(--gold-soft);margin-left:8px;padding-left:22px;display:flex;flex-direction:column;gap:16px}
.timeline .tl-item{position:relative}
.timeline .tl-item::before{content:"";position:absolute;left:-29.5px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--gold)}
.timeline time{font-size:13px;color:var(--gold);font-weight:700}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer;font-family:var(--font-bn)}
body.en .faq summary{font-family:var(--font-en)}
.faq p{margin-top:8px;color:var(--ink-soft);font-size:15px}
.people{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.people{grid-template-columns:1fr}}
.person{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center}
.person .avatar{width:74px;height:74px;border-radius:50%;background:var(--green);color:#fff;font-size:30px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-family:var(--font-bn)}
.person h3{font-size:19px}
.person p{color:var(--ink-soft);font-size:14.5px}

/* CTA band + footer */
.cta-band{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;text-align:center;box-shadow:var(--shadow)}
.cta-band h2{margin-bottom:8px}
.cta-band p{color:var(--ink-soft);margin-bottom:18px}
footer.site{margin-top:56px;border-top:1px solid var(--line);background:#fff}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:26px;padding:38px 0 8px}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
footer.site h4{font-size:16px;margin-bottom:10px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:6px;font-size:14.5px}
footer.site a{color:var(--ink-soft)}
footer.site a:hover{color:var(--green)}
.footer-brand .bname{font-family:var(--font-bn);font-size:28px;font-weight:700;color:var(--green-dark)}
footer.site p.small{font-size:14px;color:var(--ink-soft)}
.copyright{border-top:1px solid var(--line);padding:16px 0 22px;font-size:13.5px;color:var(--ink-soft);display:flex;gap:14px;flex-wrap:wrap;justify-content:space-between}

/* floating buttons + sticky bar */
.float-btns{position:fixed;right:16px;bottom:16px;z-index:70;display:flex;flex-direction:column;gap:10px}
.float-btns a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(0,0,0,.18);color:#fff}
.float-btns a:hover{text-decoration:none;transform:translateY(-2px)}
.float-btns .wa{background:#25D366}
.float-btns .call{background:var(--green)}
.float-btns svg{width:27px;height:27px;fill:#fff}
.sticky-bar{display:none}
@media(max-width:760px){
  .sticky-bar{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:65;background:#fff;border-top:1px solid var(--line);padding:9px 12px calc(9px + env(safe-area-inset-bottom))}
  .sticky-bar a{text-align:center;padding:11px 6px;border-radius:10px;font-weight:700;font-size:14.5px}
  .sticky-bar .s-call{background:var(--green);color:#fff}
  .sticky-bar .s-wa{background:#25D366;color:#fff}
  .sticky-bar .s-form{background:var(--gold-soft);color:var(--ink)}
  body.has-sticky{padding-bottom:74px}
  .float-btns{bottom:88px}
  body.has-sticky .float-btns{bottom:88px}
}
.hidden{display:none!important}