/* ============================================================
   Next Gen Construction — Precast Products stylesheet
   Swap the token values below to match your main site exactly.
   ============================================================ */

:root{
  --slate:#1b222b;          /* headers, dark bands            */
  --slate-2:#2a3441;        /* raised surfaces on dark        */
  --brick:#c0392b;          /* primary accent (from products) */
  --brick-dk:#992d22;
  --sand:#f2ede6;           /* page section tint              */
  --concrete:#6b7480;       /* secondary text                 */
  --line:#dcd6cd;
  --paper:#ffffff;
  --wa:#25d366;             /* WhatsApp                       */
  --wa-dk:#128c7e;
  --radius:6px;
  --wrap:1160px;
  --font:"Inter","Noto Sans Bengali",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:"Archivo","Inter",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--slate);background:var(--paper);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brick);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--brick);outline-offset:2px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
section{padding:64px 0}
section.tint{background:var(--sand)}

h1,h2,h3{font-family:var(--display);line-height:1.15;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.1rem)}
h2{font-size:clamp(1.5rem,3.4vw,2.1rem)}
h3{font-size:1.12rem;margin-bottom:.35em}
p{margin:0 0 1em;max-width:72ch}
.lead{font-size:1.1rem;color:var(--concrete)}

/* ---------- header ---------- */
.site-head{background:var(--slate);color:#fff;position:sticky;top:0;z-index:60}
.site-head a{color:#fff;text-decoration:none}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;max-width:var(--wrap);margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700}
.brand .mark{width:38px;height:38px;background:var(--brick);border-radius:var(--radius);display:grid;place-items:center;font-size:.82rem;letter-spacing:.02em}
.brand small{display:block;font-weight:400;font-size:.7rem;color:#b9c1cb;letter-spacing:.02em}
.nav{display:flex;gap:22px;align-items:center;font-size:.93rem}
.nav a:hover{color:var(--brick);text-decoration:none}
.head-cta{background:var(--brick);padding:9px 16px;border-radius:var(--radius);font-weight:600;font-size:.9rem}
.head-cta:hover{background:var(--brick-dk)}
@media(max-width:900px){.nav{display:none}}
@media(max-width:520px){
  .brand small{display:none}
  .brand span{font-size:.95rem;line-height:1.2}
  .head-cta{padding:8px 12px;font-size:.82rem;white-space:nowrap}
}

/* ---------- hero ---------- */
.hero{background:var(--slate);color:#fff;padding:56px 0 64px}
.hero h1{color:#fff}
.hero .lead{color:#c6ced8;max-width:60ch}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr;gap:28px}}
.hero figure{margin:0}
.hero figure img{border-radius:var(--radius);max-height:460px;object-fit:cover;width:100%}
.hero figcaption{font-size:.82rem;color:#9aa4b1;padding-top:8px}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 20px;padding:0;list-style:none}
.badges li{border:1px solid #46525f;color:#d7dee6;border-radius:100px;padding:5px 13px;font-size:.79rem}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;border:0;cursor:pointer;
  padding:14px 22px;border-radius:var(--radius);font:600 1rem/1 var(--font);text-decoration:none}
.btn:hover{text-decoration:none}
.btn svg{width:20px;height:20px;flex:0 0 20px;fill:currentColor}
.btn-sm svg{width:16px;height:16px;flex:0 0 16px}
.btn-wa{background:var(--wa);color:#08331c}
.btn-wa:hover{background:#1ebe5b}
.btn-line{background:transparent;color:#fff;border:1px solid #56616e}
.btn-line:hover{border-color:#fff}
.btn-sm{padding:9px 14px;font-size:.86rem}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}

/* ---------- key facts strip ---------- */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.facts div{background:#fff;padding:20px 18px}
.facts dt{font-size:.78rem;color:var(--concrete);margin-bottom:4px}
.facts dd{margin:0;font-family:var(--display);font-weight:700;font-size:1.05rem}
@media(max-width:760px){.facts{grid-template-columns:repeat(2,1fr)}}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gallery img{aspect-ratio:4/3;object-fit:cover;width:100%}
.gallery figcaption{padding:11px 13px;font-size:.86rem;color:var(--concrete)}

/* ---------- model cards ---------- */
.models{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:14px;list-style:none;padding:0;margin:0}
.models li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.models b{display:block;font-family:var(--display);font-size:1rem}
.models span{display:block;font-size:.85rem;color:var(--concrete);margin:3px 0 12px}

/* ---------- spec table ---------- */
.spec{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec th,.spec td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);font-size:.95rem;vertical-align:top}
.spec th{width:38%;font-weight:600;background:#fbf9f6}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec .quote-row td{background:#f0fbf4}

/* ---------- calculator ---------- */
.calc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.calc .fields{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:18px}
@media(max-width:620px){.calc .fields{grid-template-columns:1fr}}
.calc label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px}
.calc input,.calc select{width:100%;padding:12px;border:1px solid var(--line);border-radius:var(--radius);font:400 1rem var(--font);background:#fff}
.calc-out{background:var(--slate);color:#fff;border-radius:var(--radius);padding:18px 20px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.calc-out strong{font-family:var(--display);font-size:1.7rem;display:block}
.calc-out small{color:#b8c0ca;font-size:.8rem}

/* ---------- applications ---------- */
.apps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;list-style:none;padding:0;margin:0}
.apps li{background:#fff;border-left:3px solid var(--brick);padding:16px 18px;border-radius:0 var(--radius) var(--radius) 0}
.apps b{display:block;margin-bottom:3px}
.apps span{font-size:.9rem;color:var(--concrete)}

/* ---------- FAQ ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--brick);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 18px 16px;color:var(--concrete)}
.faq .a p{margin:0}

/* ---------- quote band ---------- */
.band{background:var(--slate);color:#fff;text-align:center}
.band h2{color:#fff}
.band p{color:#c6ced8;margin-left:auto;margin-right:auto}
.band .btn-row{justify-content:center}

/* ---------- related ---------- */
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;color:var(--slate)}
.related a:hover{border-color:var(--brick);text-decoration:none}
.related b{display:block;font-family:var(--display);margin-bottom:4px}
.related span{font-size:.88rem;color:var(--concrete)}

/* ---------- footer ---------- */
.site-foot{background:#141a21;color:#aeb7c1;padding:48px 0 90px;font-size:.9rem}
.site-foot a{color:#aeb7c1}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr}}
.site-foot h3{color:#fff;font-size:.95rem}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin-bottom:7px}
.foot-base{border-top:1px solid #26303a;margin-top:32px;padding-top:18px;font-size:.82rem}

/* ---------- floating + sticky WhatsApp ---------- */
.wa-float{position:fixed;right:18px;bottom:88px;z-index:70;width:56px;height:56px;border-radius:50%;
  background:var(--wa);display:grid;place-items:center;box-shadow:0 6px 20px rgba(0,0,0,.28)}
.wa-float svg{width:30px;height:30px;fill:#fff}
.wa-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  grid-template-columns:1fr 1fr;background:var(--slate);border-top:1px solid #2f3a46}
.wa-bar a{padding:15px 8px;text-align:center;color:#fff;font-weight:600;font-size:.95rem}
.wa-bar a:hover{text-decoration:none}
.wa-bar .w{background:var(--wa);color:#08331c}
@media(max-width:760px){
  .wa-bar{display:grid}
  .wa-float{bottom:78px;right:14px;width:50px;height:50px}
  section{padding:48px 0}
}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}