/* ============================================================
   Samani Construction Ltd — Design System
   Charcoal / Brass / Bone · serif display + grotesque body
   ============================================================ */

/* Fonts are preloaded in each page <head> (preconnect + stylesheet) for faster first paint. */

:root{
  --charcoal:#1A1C1E;
  --charcoal-2:#232629;
  --brass:#C8912B;
  --brass-light:#E0AC46;
  --bone:#F4F1EA;
  --bone-2:#EAE5DA;
  --stone:#8A7A5C;
  --ink:#14161a;
  --line:rgba(26,28,30,.12);
  --line-dk:rgba(244,241,234,.14);
  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--charcoal);
  background:var(--bone);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.06;letter-spacing:-.02em}
h1{font-size:clamp(2.6rem,6vw,5.2rem)}
h2{font-size:clamp(2rem,4vw,3.4rem)}
h3{font-size:clamp(1.3rem,2vw,1.7rem)}
p{max-width:64ch}

.wrap{width:min(var(--wrap),92vw);margin-inline:auto}
.eyebrow{
  font-family:var(--sans);font-size:.74rem;font-weight:600;
  letter-spacing:.28em;text-transform:uppercase;color:var(--brass);
  display:inline-flex;align-items:center;gap:.7rem;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--brass)}
.lede{font-size:clamp(1.05rem,1.5vw,1.28rem);color:#3a3d40;max-width:60ch}
.muted{color:var(--stone)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-weight:600;font-size:.92rem;letter-spacing:.01em;
  padding:.95rem 1.7rem;border-radius:2px;border:1px solid transparent;
  cursor:pointer;transition:.35s var(--ease);
}
.btn-primary{background:var(--brass);color:#1a1206}
.btn-primary:hover{background:var(--brass-light);transform:translateY(-2px)}
.btn-ghost{border-color:currentColor;color:var(--charcoal)}
.btn-ghost:hover{background:var(--charcoal);color:var(--bone)}
.btn-ghost.on-dark{color:var(--bone)}
.btn-ghost.on-dark:hover{background:var(--bone);color:var(--charcoal)}
.btn .arw{transition:transform .35s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}

/* ---------- header ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem clamp(1rem,4vw,2.6rem);
  transition:.4s var(--ease);
}
.site-head.solid{background:rgba(26,28,30,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line-dk)}
.site-head .brand img{height:38px}
.nav{display:flex;align-items:center;gap:2rem}
.nav a{font-size:.9rem;font-weight:500;color:var(--bone);opacity:.82;transition:.25s;position:relative}
.nav a:hover,.nav a.active{opacity:1;color:var(--brass-light)}
.nav a.active::after{content:"";position:absolute;left:0;bottom:-6px;width:100%;height:1px;background:var(--brass)}
.nav .btn{padding:.6rem 1.2rem}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:26px;height:2px;background:var(--bone);transition:.3s}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:flex-end;
  color:var(--bone);
  background:
    radial-gradient(120% 90% at 80% 10%,rgba(200,145,43,.16),transparent 55%),
    linear-gradient(180deg,#15171a 0%,#1d2023 55%,#14161a 100%);
  overflow:hidden;
}
.hero::before{ /* blueprint grid */
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(var(--line-dk) 1px,transparent 1px),linear-gradient(90deg,var(--line-dk) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(120% 100% at 70% 30%,#000,transparent 75%);
}
.hero-inner{position:relative;z-index:2;width:min(var(--wrap),92vw);margin-inline:auto;padding:9rem 0 5rem}
.hero h1{max-width:16ch}
.hero h1 em{font-style:italic;color:var(--brass-light)}
.hero .lede{color:#cfccc4;margin-top:1.6rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2.4rem}
.hero-strip{
  position:relative;z-index:2;border-top:1px solid var(--line-dk);
  background:rgba(20,22,26,.4);
}
.hero-strip .wrap{display:flex;flex-wrap:wrap;gap:2rem 3rem;padding:1.4rem 0}
.hero-strip .stat{display:flex;flex-direction:column}
.hero-strip .stat b{font-family:var(--serif);font-size:1.7rem;color:var(--brass-light);line-height:1}
.hero-strip .stat span{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:#a7a49c;margin-top:.4rem}

/* ---------- sections ---------- */
section{padding:clamp(4rem,9vw,8rem) 0}
.sec-head{max-width:70ch;margin-bottom:3rem}
.sec-head h2{margin-top:1rem}
.dark{background:var(--charcoal);color:var(--bone)}
.dark .lede{color:#c7c4bc}
.dark .sec-head h2{color:var(--bone)}

/* services grid */
.grid{display:grid;gap:1.4rem}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:4px;padding:2rem;
  transition:.4s var(--ease);position:relative;overflow:hidden;
}
.dark .card{background:var(--charcoal-2);border-color:var(--line-dk)}
.card:hover{transform:translateY(-5px);border-color:var(--brass);box-shadow:0 24px 50px -30px rgba(0,0,0,.4)}
.card .num{font-family:var(--serif);font-size:.9rem;color:var(--brass);font-weight:600}
.card h3{margin:.9rem 0 .6rem}
.card p{font-size:.95rem;color:#4a4d50}
.dark .card p{color:#b7b4ac}
.card .ic{width:44px;height:44px;color:var(--brass);margin-bottom:1.1rem}

/* project tiles */
.projects-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:1.1rem}
.ptile{
  position:relative;border-radius:4px;overflow:hidden;min-height:300px;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:1.6rem;color:var(--bone);isolation:isolate;
  border:1px solid var(--line-dk);
}
.ptile.big{grid-column:span 4;min-height:420px}
.ptile.reg{grid-column:span 2}
.ptile.half{grid-column:span 3}
.ptile::before{content:"";position:absolute;inset:0;z-index:-2;background:var(--pattern),linear-gradient(135deg,#26292c,#15171a);background-size:cover;transition:transform .8s var(--ease)}
.ptile::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,transparent 30%,rgba(15,16,18,.82))}
.ptile:hover::before{transform:scale(1.06)}
.ptile .tag{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--brass-light);font-weight:600}
.ptile h3{margin:.4rem 0 .2rem;color:#fff}
.ptile .loc{font-size:.85rem;color:#cfccc4}

/* pattern fills for tiles (stand-ins for real photography) */
.p-sirai{--pattern:radial-gradient(circle at 30% 20%,rgba(200,145,43,.35),transparent 60%)}
.p-capital{--pattern:linear-gradient(120deg,rgba(200,145,43,.28),transparent 55%)}
.p-sankara{--pattern:radial-gradient(circle at 75% 30%,rgba(224,172,70,.32),transparent 60%)}
.p-city{--pattern:linear-gradient(60deg,rgba(138,122,92,.4),transparent 60%)}
.p-aaa{--pattern:radial-gradient(circle at 50% 80%,rgba(200,145,43,.3),transparent 65%)}
.p-sarova{--pattern:linear-gradient(200deg,rgba(224,172,70,.3),transparent 55%)}

/* split feature */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,5rem);align-items:center}
.split .visual{
  aspect-ratio:4/5;border-radius:6px;border:1px solid var(--line-dk);
  background:
    radial-gradient(120% 90% at 20% 10%,rgba(200,145,43,.22),transparent 55%),
    repeating-linear-gradient(90deg,#232629 0 2px,#1c1f22 2px 26px),
    linear-gradient(180deg,#26292c,#15171a);
  position:relative;overflow:hidden;
}
.split .visual .badge{
  position:absolute;left:1.6rem;bottom:1.6rem;color:var(--bone);
  font-family:var(--serif);font-style:italic;font-size:1.1rem;
}
.feature-list{list-style:none;margin-top:2rem;display:grid;gap:1rem}
.feature-list li{display:flex;gap:1rem;align-items:flex-start;padding-bottom:1rem;border-bottom:1px solid var(--line)}
.dark .feature-list li{border-color:var(--line-dk)}
.feature-list .k{font-family:var(--serif);color:var(--brass);font-size:1.1rem;min-width:2.2rem}

/* process steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;counter-reset:s}
.step{padding-top:1.4rem;border-top:2px solid var(--line-dk)}
.step .n{font-family:var(--serif);font-size:2.4rem;color:var(--brass);line-height:1}
.step h3{font-size:1.15rem;margin:.6rem 0 .4rem;color:var(--bone)}
.step p{font-size:.9rem;color:#b7b4ac}

/* logos / trust */
.logos{display:flex;flex-wrap:wrap;gap:1.4rem 2.6rem;align-items:center;opacity:.9}
.logos span{font-family:var(--serif);font-size:1.15rem;color:var(--stone);letter-spacing:.02em}

/* CTA band */
.cta-band{background:linear-gradient(120deg,var(--brass) 0%,#a8761f 100%);color:#1a1206;text-align:center}
.cta-band h2{color:#1a1206;max-width:20ch;margin:0 auto 1.4rem}
.cta-band .btn-ghost{border-color:#1a1206;color:#1a1206}
.cta-band .btn-ghost:hover{background:#1a1206;color:var(--brass)}

/* forms */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(2rem,5vw,4.5rem)}
.info-row{display:flex;gap:1rem;padding:1.3rem 0;border-bottom:1px solid var(--line-dk)}
.info-row .ic{width:22px;color:var(--brass);flex-shrink:0;margin-top:3px}
.info-row b{display:block;font-family:var(--serif);font-size:1.1rem;color:var(--bone)}
.info-row span{color:#b7b4ac;font-size:.95rem}
form{display:grid;gap:1.1rem}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
label{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--stone);font-weight:600;display:block;margin-bottom:.5rem}
input,select,textarea{
  width:100%;padding:.9rem 1rem;border:1px solid var(--line-dk);border-radius:3px;
  background:var(--charcoal-2);color:var(--bone);font-family:inherit;font-size:.95rem;transition:.25s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brass);background:#2b2f33}
textarea{resize:vertical;min-height:120px}
.form-note{font-size:.82rem;color:var(--stone)}

/* page hero (interior pages) */
.page-hero{
  padding:11rem 0 4rem;color:var(--bone);position:relative;overflow:hidden;
  background:radial-gradient(100% 120% at 85% 0%,rgba(200,145,43,.16),transparent 55%),linear-gradient(180deg,#15171a,#1d2023);
}
.page-hero::before{content:"";position:absolute;inset:0;opacity:.4;background-image:linear-gradient(var(--line-dk) 1px,transparent 1px),linear-gradient(90deg,var(--line-dk) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(120% 100% at 80% 20%,#000,transparent 72%)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{margin-top:1rem;max-width:16ch}
.crumb{font-size:.8rem;color:var(--stone);letter-spacing:.05em}
.crumb a:hover{color:var(--brass-light)}

/* about values */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:1rem}
.value{padding:1.8rem;border:1px solid var(--line);border-radius:4px;background:#fff}
.value .ic{width:38px;color:var(--brass);margin-bottom:1rem}
.value h3{font-size:1.15rem;margin-bottom:.5rem}
.value p{font-size:.92rem;color:#4a4d50}

/* team */
.team{display:grid;grid-template-columns:repeat(2,1fr);gap:1.4rem}
.member{display:flex;gap:1.4rem;align-items:center;padding:1.6rem;border:1px solid var(--line-dk);border-radius:4px;background:var(--charcoal-2)}
.member .av{width:76px;height:76px;border-radius:50%;background:linear-gradient(135deg,var(--brass),#7a5615);display:grid;place-items:center;font-family:var(--serif);font-size:1.6rem;color:#1a1206;flex-shrink:0}
.member h3{font-size:1.2rem;color:var(--bone)}
.member .role{color:var(--brass-light);font-size:.85rem;font-weight:600}
.member p{font-size:.88rem;color:#b7b4ac;margin-top:.3rem}

/* service detail rows */
.svc-row{display:grid;grid-template-columns:.5fr 1.5fr;gap:2rem;padding:2.4rem 0;border-top:1px solid var(--line)}
.svc-row:last-child{border-bottom:1px solid var(--line)}
.svc-row .sn{font-family:var(--serif);font-size:2.2rem;color:var(--brass)}
.svc-row h3{margin-bottom:.7rem}
.svc-row .chips{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1rem}
.chip{font-size:.78rem;padding:.35rem .8rem;border:1px solid var(--line);border-radius:100px;color:var(--stone)}

/* footer */
.site-foot{background:#131517;color:var(--bone);padding:4.5rem 0 2rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2.4rem;padding-bottom:3rem;border-bottom:1px solid var(--line-dk)}
.site-foot .brand img{height:44px;margin-bottom:1.2rem}
.site-foot p{font-size:.9rem;color:#a7a49c;max-width:34ch}
.foot-col h4{font-family:var(--sans);font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;color:var(--brass);margin-bottom:1.1rem}
.foot-col a{display:block;font-size:.92rem;color:#c7c4bc;padding:.32rem 0;transition:.2s}
.foot-col a:hover{color:var(--brass-light)}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding-top:1.6rem;font-size:.82rem;color:var(--stone)}

/* reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:.8s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1!important;transform:none!important;transition:none!important}
  html{scroll-behavior:auto}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* accessibility: skip link + focus */
.skip{position:absolute;left:-999px;top:0;z-index:200;background:var(--brass);color:#1a1206;padding:.8rem 1.2rem;font-weight:600;border-radius:0 0 4px 0}
.skip:focus{left:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--brass-light);outline-offset:3px}

/* floating WhatsApp CTA */
.wa-float{
  position:fixed;right:clamp(1rem,3vw,1.6rem);bottom:clamp(1rem,3vw,1.6rem);z-index:90;
  display:inline-flex;align-items:center;gap:.6rem;
  background:#25D366;color:#0a2e17;font-weight:700;font-size:.9rem;
  padding:.85rem 1.2rem;border-radius:100px;box-shadow:0 12px 30px -8px rgba(0,0,0,.45);
  transition:.3s var(--ease);
}
.wa-float:hover{transform:translateY(-3px);box-shadow:0 16px 36px -8px rgba(0,0,0,.5)}
.wa-float svg{width:22px;height:22px;fill:currentColor}
.wa-float .lbl{white-space:nowrap}
@media(max-width:560px){.wa-float .lbl{display:none}.wa-float{padding:.9rem}}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .nav{position:fixed;inset:0 0 0 auto;width:min(78vw,340px);background:var(--charcoal);flex-direction:column;justify-content:center;gap:1.6rem;transform:translateX(100%);transition:.4s var(--ease);border-left:1px solid var(--line-dk)}
  .nav.open{transform:none}
  .burger{display:flex;z-index:120}
  .cols-3,.cols-2,.steps,.values,.team{grid-template-columns:1fr}
  .split,.contact-grid{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:1fr}
  .ptile.big,.ptile.reg,.ptile.half{grid-column:span 1}
  .f-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .svc-row{grid-template-columns:1fr;gap:.6rem}
}
@media(max-width:560px){
  .foot-grid{grid-template-columns:1fr}
  .hero-strip .wrap{gap:1.4rem 2rem}
}
