/* ==========================================================================
   Babji Civil Interiors - site styles
   Palette sampled from the client logo: gold #A78B63, charcoal #363A3D
   ========================================================================== */

:root{
  --gold:#A78B63;
  --gold-lt:#C9AE82;
  --gold-dk:#8A7049;
  --ink:#1B1D1F;
  --charcoal:#363A3D;
  --slate:#5E6468;
  --muted:#8A9095;
  --line:#E4E0D8;
  --cream:#FAF8F4;
  --sand:#F2EEE6;
  --white:#fff;
  --shadow:0 1px 2px rgba(27,29,31,.04), 0 8px 24px rgba(27,29,31,.06);
  --shadow-lg:0 2px 4px rgba(27,29,31,.06), 0 18px 50px rgba(27,29,31,.13);
  --serif:"Playfair Display",Georgia,serif;
  --sans:"Jost","Segoe UI",system-ui,sans-serif;
  --gutter:clamp(16px,5vw,64px);
  --maxw:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--ink);background:var(--white);
  font-size:17px;line-height:1.65;font-weight:350;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}

h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.14;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2.4rem,6.2vw,4.5rem)}
h2{font-size:clamp(1.9rem,4.2vw,3.1rem);margin-bottom:.55em}
h3{font-size:clamp(1.2rem,2.2vw,1.55rem);margin-bottom:.4em}
.section-head h2{margin-bottom:.4em}
p{margin:0 0 1.1em}
.lede{font-size:clamp(1.05rem,1.7vw,1.25rem);color:var(--slate);line-height:1.72;font-weight:300}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(64px,9vw,128px)}
.section--sand{background:var(--sand)}
.section--cream{background:var(--cream)}
.section--dark{background:var(--charcoal);color:#EDEAE4}
.section--dark h2,.section--dark h3{color:#fff}
.section--dark .lede{color:#B9BDC0}

/* --- eyebrow / section heads ------------------------------------------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-size:.72rem;font-weight:500;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold-dk);margin:0 0 1.1rem
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--gold);display:block}
.section--dark .eyebrow{color:var(--gold-lt)}
.section-head{max-width:62ch;margin-bottom:clamp(36px,5vw,64px)}
.section-head--center{margin-inline:auto;text-align:center}
.section-head--center .eyebrow{justify-content:center}

/* --- buttons ------------------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  padding:.95em 2em;border-radius:2px;border:1px solid transparent;cursor:pointer;
  font-size:.82rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),background .25s,color .25s,border-color .25s,box-shadow .25s;
}
.btn:hover{transform:translateY(-2px)}
.btn--gold{background:var(--gold);color:#fff;box-shadow:0 6px 18px rgba(167,139,99,.32)}
.btn--gold:hover{background:var(--gold-dk);box-shadow:0 10px 26px rgba(167,139,99,.42)}
.btn--ghost{border-color:currentColor;color:inherit}
.btn--ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.section--dark .btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn--wa{background:#25D366;color:#fff}
.btn--wa:hover{background:#1DA851}

/* --- header ------------------------------------------------------------- */
.hdr{
  position:fixed;inset:0 0 auto;z-index:70;
  transition:background .35s,box-shadow .35s,padding .35s;
  padding-block:18px
}
.hdr__in{display:flex;align-items:center;justify-content:space-between;gap:24px}
.hdr__logo img{height:52px;width:auto;transition:height .35s}
.hdr__logo .dark{display:none}
.hdr.is-stuck{background:rgba(255,255,255,.96);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line),0 6px 24px rgba(27,29,31,.07);padding-block:10px}
.hdr.is-stuck .hdr__logo img{height:42px}
.hdr.is-stuck .hdr__logo .light{display:none}
.hdr.is-stuck .hdr__logo .dark{display:block}
.hdr.is-stuck .nav a{color:var(--ink)}
.hdr.is-stuck .burger span{background:var(--ink)}

.nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,38px)}
.nav a{
  font-size:.79rem;font-weight:400;letter-spacing:.15em;text-transform:uppercase;color:#fff;
  position:relative;padding-block:6px;transition:color .25s
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);transition:width .3s
}
.nav a:hover::after,.nav a.is-active::after{width:100%}
.nav a.is-active{color:var(--gold-lt)}
.hdr.is-stuck .nav a.is-active{color:var(--gold-dk)}
.nav .btn{color:#fff;padding:.7em 1.5em}
.nav .btn::after{display:none}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:#fff;transition:.3s}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media(max-width:900px){
  .burger{display:flex}
  .nav{
    position:fixed;inset:0 0 0 auto;width:min(84vw,340px);background:var(--charcoal);
    flex-direction:column;align-items:flex-start;justify-content:center;gap:28px;
    padding:0 40px;transform:translateX(100%);transition:transform .4s cubic-bezier(.4,0,.2,1)
  }
  .nav.is-open{transform:translateX(0)}
  .nav a{color:#fff!important;font-size:1rem}
  .hdr.is-stuck .nav a{color:#fff}
}

/* --- hero ----------------------------------------------------------------
   Split hero: typography on the brand charcoal, photographs in a mosaic.
   Deliberately NOT a full-bleed photo — the client's photo set is working
   site photography, which reads as a building site when blown up full screen.
   -------------------------------------------------------------------------- */
.hero{
  position:relative;background:var(--charcoal);overflow:hidden;
  padding-block:clamp(120px,15vw,168px) clamp(60px,8vw,96px)
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(1100px 620px at 12% 18%,rgba(167,139,99,.20),transparent 62%);
  pointer-events:none
}
.hero__grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(34px,5vw,72px);align-items:center}
.hero h1{color:#fff;max-width:14ch}
.hero h1 em{font-style:italic;color:var(--gold-lt)}
.hero__sub{color:#B9BDC0;max-width:46ch;font-size:clamp(1rem,1.5vw,1.16rem);font-weight:300;margin-top:1.3rem}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:2.2rem}
.hero__meta{
  display:flex;flex-wrap:wrap;gap:8px 26px;margin-top:2.6rem;padding-top:1.7rem;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:#8D9296
}
.hero__meta b{color:var(--gold-lt);font-weight:500}

.hero__mosaic{display:grid;grid-template-columns:1fr 1fr;gap:clamp(10px,1.2vw,16px)}
.hero__mosaic figure{margin:0;overflow:hidden;background:#2A2D30;position:relative}
.hero__mosaic img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.hero__mosaic figure:hover img{transform:scale(1.06)}
.hero__mosaic figure:nth-child(1){aspect-ratio:4/5}
.hero__mosaic figure:nth-child(2){aspect-ratio:4/5;margin-top:clamp(18px,3vw,38px)}
.hero__mosaic figure:nth-child(3){aspect-ratio:4/5;margin-top:calc(-1 * clamp(18px,3vw,38px))}
.hero__mosaic figure:nth-child(4){aspect-ratio:4/5}
.hero__mosaic figure{opacity:0;transform:translateY(22px);animation:tilein .85s cubic-bezier(.2,.7,.3,1) forwards}
.hero__mosaic figure:nth-child(1){animation-delay:.10s}
.hero__mosaic figure:nth-child(2){animation-delay:.22s}
.hero__mosaic figure:nth-child(3){animation-delay:.34s}
.hero__mosaic figure:nth-child(4){animation-delay:.46s}
@keyframes tilein{to{opacity:1;transform:none}}

@media(max-width:860px){
  .hero__grid{grid-template-columns:1fr;gap:38px}
  .hero__mosaic figure:nth-child(2),
  .hero__mosaic figure:nth-child(3){margin-top:0}
  .hero__mosaic figure{aspect-ratio:1/1!important}
}

/* --- trade strip -------------------------------------------------------- */
/* separators drawn as insets, not grid gaps — a gap leaves grey empty cells
   on the last row whenever seven items do not divide by the column count */
.trades{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:0;background:var(--white);border-block:1px solid var(--line)}
.trade{background:var(--white);padding:30px 20px;text-align:center;transition:background .3s,transform .3s;box-shadow:inset -1px 0 0 var(--line),inset 0 -1px 0 var(--line)}
.trade:hover{background:var(--cream);transform:translateY(-3px)}
.trade svg{width:30px;height:30px;stroke:var(--gold);fill:none;stroke-width:1.4;margin:0 auto 12px}
.trade span{display:block;font-size:.78rem;letter-spacing:.13em;text-transform:uppercase;color:var(--slate);font-weight:400}

/* --- generic grids ------------------------------------------------------ */
.grid{display:grid;gap:clamp(18px,2.4vw,30px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}

/* --- service cards ------------------------------------------------------ */
.svc{background:var(--white);border:1px solid var(--line);overflow:hidden;display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s,border-color .35s}
.svc:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.svc__img{aspect-ratio:4/3;overflow:hidden;background:var(--sand)}
.svc__img img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.7,.3,1)}
.svc:hover .svc__img img{transform:scale(1.07)}
.svc__body{padding:26px 26px 30px;flex:1;display:flex;flex-direction:column}
.svc__body h3{margin-bottom:.5rem}
.svc__body p{color:var(--slate);font-size:.94rem;margin-bottom:1rem}
.svc__list{list-style:none;margin:auto 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.svc__list li{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--gold-dk);background:var(--cream);border:1px solid var(--line);padding:5px 10px;border-radius:2px}

/* --- feature / split ---------------------------------------------------- */
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:clamp(30px,5vw,72px);align-items:center}
.split__media{position:relative;z-index:0}
.split__media img{width:100%;aspect-ratio:4/5;object-fit:cover}
.split__media::after{content:"";position:absolute;inset:16px -16px -16px 16px;border:1px solid var(--gold);z-index:-1}
.split--flip .split__media{order:2}
@media(max-width:780px){.split--flip .split__media{order:0}}

/* --- numbered process --------------------------------------------------- */
.steps{counter-reset:s;display:grid;gap:0}
.step{counter-increment:s;display:grid;grid-template-columns:auto 1fr;gap:clamp(18px,3vw,40px);padding:30px 0;border-top:1px solid rgba(255,255,255,.14)}
.step:last-child{border-bottom:1px solid rgba(255,255,255,.14)}
.step::before{content:"0" counter(s);font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.4rem);color:var(--gold-lt);line-height:1}
.step h3{margin-bottom:.35rem}
.step p{color:#B9BDC0;margin:0;font-size:.95rem}

/* --- gallery ------------------------------------------------------------ */
.filters{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-bottom:clamp(28px,4vw,48px)}
.filters button{
  background:none;border:1px solid var(--line);padding:.62em 1.35em;border-radius:2px;cursor:pointer;
  font-size:.75rem;letter-spacing:.13em;text-transform:uppercase;color:var(--slate);transition:.25s
}
.filters button:hover{border-color:var(--gold);color:var(--gold-dk)}
.filters button.is-active{background:var(--charcoal);border-color:var(--charcoal);color:#fff}

.gal{columns:3 280px;column-gap:clamp(12px,1.6vw,20px)}
.gal__item{break-inside:avoid;margin-bottom:clamp(12px,1.6vw,20px);position:relative;overflow:hidden;cursor:zoom-in;background:var(--sand);display:block;width:100%;border:0;padding:0}
.gal__item img{width:100%;transition:transform .7s cubic-bezier(.2,.7,.3,1)}
.gal__item:hover img{transform:scale(1.05)}
.gal__item::after{
  content:attr(data-label);position:absolute;inset:auto 0 0;padding:34px 16px 14px;
  background:linear-gradient(transparent,rgba(27,29,31,.82));color:#fff;text-align:left;
  font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;
  opacity:0;transform:translateY(8px);transition:.35s
}
.gal__item:hover::after,.gal__item:focus-visible::after{opacity:1;transform:translateY(0)}
.gal__item.is-hidden{display:none}

/* --- lightbox ----------------------------------------------------------- */
.lb{position:fixed;inset:0;z-index:200;background:rgba(18,19,20,.96);display:none;align-items:center;justify-content:center;padding:clamp(16px,4vw,56px)}
.lb.is-open{display:flex;animation:fade .28s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb img{max-width:100%;max-height:86vh;object-fit:contain;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lb__cap{position:absolute;left:0;right:0;bottom:22px;text-align:center;color:#C9CBCD;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase}
.lb__x,.lb__nav{position:absolute;background:none;border:0;color:#fff;cursor:pointer;opacity:.7;transition:.25s;padding:14px;line-height:0}
.lb__x:hover,.lb__nav:hover{opacity:1}
.lb__x{top:14px;right:18px;font-size:2rem;line-height:1}
.lb__nav{top:50%;transform:translateY(-50%);font-size:2.4rem}
.lb__nav--prev{left:6px}
.lb__nav--next{right:6px}

/* --- contact ------------------------------------------------------------ */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:clamp(30px,5vw,68px)}
.field{margin-bottom:18px}
.field label{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;padding:.88em 1em;border:1px solid var(--line);border-radius:2px;background:var(--white);
  font:inherit;font-size:.95rem;color:var(--ink);transition:border-color .25s,box-shadow .25s
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(167,139,99,.15)
}
.field textarea{resize:vertical;min-height:120px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.cinfo{list-style:none;padding:0;margin:0}
.cinfo li{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.cinfo li:first-child{padding-top:0}
.cinfo svg{width:20px;height:20px;stroke:var(--gold);fill:none;stroke-width:1.5;flex:none;margin-top:3px}
.cinfo b{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:500;margin-bottom:3px}
.cinfo a:hover{color:var(--gold-dk)}

.note{background:#FFF8E6;border:1px solid #E8D9A8;border-left:3px solid #C9A227;padding:14px 18px;font-size:.88rem;color:#6B5710;margin-bottom:24px}

/* --- CTA band ----------------------------------------------------------- */
.cta{position:relative;overflow:hidden;background:var(--charcoal);text-align:center;color:#fff}
.cta__bg{position:absolute;inset:0;opacity:.2}
.cta__bg img{width:100%;height:100%;object-fit:cover}
.cta .wrap{position:relative;z-index:2}
.cta h2{color:#fff;max-width:20ch;margin:0 auto .8rem}
.cta p{color:#C2C6C9;max-width:54ch;margin:0 auto 2rem}
.cta__btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* --- footer ------------------------------------------------------------- */
.ftr{background:var(--ink);color:#9BA0A4;padding-block:clamp(48px,6vw,80px) 0;font-size:.9rem}
.ftr__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;padding-bottom:44px}
.ftr img{height:64px;width:auto;margin-bottom:18px}
.ftr h4{color:#fff;font-family:var(--sans);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:16px;font-weight:500}
.ftr ul{list-style:none;padding:0;margin:0}
.ftr li{margin-bottom:9px}
.ftr a:hover{color:var(--gold-lt)}
.ftr__btm{border-top:1px solid rgba(255,255,255,.1);padding-block:22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:.82rem}
.ftr__btm a{color:var(--gold-lt)}

/* --- floating whatsapp -------------------------------------------------- */
.wa-float{
  position:fixed;right:18px;bottom:18px;z-index:80;width:54px;height:54px;border-radius:50%;
  background:#25D366;display:grid;place-items:center;box-shadow:0 6px 22px rgba(37,211,102,.45);
  transition:transform .3s
}
.wa-float:hover{transform:scale(1.09)}
.wa-float svg{width:28px;height:28px;fill:#fff}

/* --- scroll reveal ------------------------------------------------------ */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.is-in{opacity:1;transform:none}
.rv:nth-child(2){transition-delay:.08s}
.rv:nth-child(3){transition-delay:.16s}
.rv:nth-child(4){transition-delay:.24s}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
  .hero__bg img{animation:none}
}

/* --- page header (inner pages) ------------------------------------------ */
.phead{position:relative;background:var(--charcoal);padding-block:clamp(130px,17vw,210px) clamp(50px,7vw,86px);overflow:hidden}
.phead__bg{position:absolute;inset:0;opacity:.3}
.phead__bg img{width:100%;height:100%;object-fit:cover}
.phead::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(27,29,31,.75),rgba(27,29,31,.5))}
.phead .wrap{position:relative;z-index:2}
.phead h1{color:#fff;font-size:clamp(2.1rem,5vw,3.6rem)}
.phead p{color:#C2C6C9;max-width:58ch;margin-top:.9rem;font-weight:300}
.crumb{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-lt);margin-bottom:1rem}
.crumb a:hover{text-decoration:underline}
/* a page header already supplies the breathing room above the first section */
.phead + .section{padding-top:clamp(44px,6vw,80px)}