/* ============================================================
   Beng Chee Air-Con & Construction — light, photo-led system
   ============================================================ */
:root{
  --paper:#ffffff;
  --paper-alt:#f4f6f8;
  --ink:#14161a;
  --ink-soft:#525964;
  --muted:#97a0aa;
  --line:#e6e9ee;
  --red:#c2402f;
  --red-ink:#a8331f;
  --maxw:1180px;
  --pad:clamp(20px,5vw,68px);
  --r:14px;
  /* Reference uses Neue Haas Grotesk Display (paid). Hanken Grotesk = closest free match. */
  --font-display:"Hanken Grotesk",system-ui,sans-serif;
  --font-body:"Hanken Grotesk",system-ui,sans-serif;
  --font-mono:"Hanken Grotesk",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--ink);background:var(--paper);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.1;letter-spacing:-.015em}
.container{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
.ph{font-family:var(--font-mono);font-size:.72em;color:var(--muted);font-style:normal;letter-spacing:.01em;opacity:.85}

/* shared */
.kicker{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--red);font-weight:500;display:inline-block;margin-bottom:14px}
.kicker.light{color:#ffb9ad}
.eyebrow{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--font-mono);font-size:.82rem;
  letter-spacing:.03em;font-weight:500;padding:.9em 1.6em;border-radius:9px;
  transition:transform .18s ease,background .18s ease,border-color .18s ease;white-space:nowrap}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 10px 26px -14px rgba(194,64,47,.8)}
.btn-primary:hover{background:var(--red-ink);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid #e6d8d4;color:var(--red)}
.btn-ghost:hover{border-color:var(--red);transform:translateY(-2px)}

.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:linear-gradient(90deg,var(--red),#e2705f);box-shadow:0 0 10px -2px rgba(194,64,47,.6);transition:width .08s linear}

/* ============ HEADER ============ */
.site-header{position:sticky;top:0;z-index:50;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  padding:12px var(--pad);background:#fff;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:13px;color:var(--ink);justify-self:start}
.brand-logo{height:46px;width:auto;display:block;flex:none;mix-blend-mode:multiply}
.brand-name{display:flex;flex-direction:column;justify-content:center;line-height:1.04}
.bn-main{font-family:"Poppins",var(--font-display);font-weight:700;font-size:1.16rem;letter-spacing:-.015em;color:var(--ink)}
.bn-sub{font-family:var(--font-body);font-weight:600;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-top:4px}

.site-nav{display:flex;align-items:center;gap:clamp(18px,2.3vw,36px);justify-self:center}
.site-nav a{font-size:.96rem;color:var(--ink);font-weight:500;transition:color .15s}
.site-nav a:hover{color:var(--red)}
.header-right{justify-self:end;display:flex;align-items:center;gap:14px}
.header-cta{font-family:"Poppins",var(--font-display);font-weight:600;font-size:.94rem;color:var(--red);
  background:#f6e7e3;border-radius:12px;padding:.66em 1.35em;transition:background .18s,transform .18s}
.header-cta:hover{background:#efd6d0;transform:translateY(-1px)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px}

/* ============ HERO ============ */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  min-height:min(92vh,800px);
  background:radial-gradient(120% 95% at 78% 22%, #ffffff 0%, #f3f5f8 52%, #e9ecf1 100%)}
.hero-stage{position:absolute;inset:0;z-index:0}
#duct3d{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:grab;touch-action:pan-y}
#duct3d:active{cursor:grabbing}
.leaders{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:3}
/* veil keeps the headline legible over the wireframe, fading away to the right */
.hero-veil{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(95deg, rgba(244,246,248,.94) 0%, rgba(244,246,248,.66) 30%, rgba(244,246,248,.12) 52%, rgba(244,246,248,0) 66%)}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;
  min-height:min(92vh,800px);pointer-events:none}
.hero-copy{max-width:46%}
.hero-copy .btn{pointer-events:auto}
.hero h1{font-size:clamp(2.3rem,4.8vw,3.5rem);font-weight:600;margin:14px 0 0}
.hero h1 .ac{color:var(--red)}
.hero-lead{max-width:42ch;color:var(--ink-soft);font-size:1.06rem;margin-top:22px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.label-3d{position:absolute;transform:translate(-50%,-50%);z-index:4;pointer-events:none;
  background:rgba(255,255,255,.9);border:1px solid #e6d8d4;border-radius:6px;padding:3px 8px;
  font-family:var(--font-mono);font-size:.58rem;letter-spacing:.02em;color:var(--ink);white-space:nowrap;
  box-shadow:0 6px 16px -10px rgba(0,0,0,.4)}
.label-3d b{color:var(--red);font-weight:600}
.stage-hint{position:absolute;right:clamp(16px,4vw,40px);bottom:18px;font-family:var(--font-mono);
  font-size:.64rem;letter-spacing:.08em;color:var(--muted);z-index:4}

/* ============ STATS ============ */
.stats{background:#1d1d1b;color:#fff}
.stats-inner{display:grid;grid-template-columns:0.8fr 1.55fr;gap:clamp(32px,6vw,90px);
  align-items:start;padding-block:clamp(64px,9vh,112px)}
.stats-lead p{color:#b6b9bd;font-size:1.02rem;line-height:1.7;max-width:34ch}
.stats-list{display:flex;flex-direction:column}
.stat-row{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start;
  padding:clamp(20px,3vh,32px) 0;border-top:1px solid rgba(255,255,255,.16)}
.stat-num{font-family:var(--font-display);font-weight:400;color:#fff;
  font-size:clamp(2.6rem,6vw,5rem);line-height:.92;letter-spacing:-.01em}
.stat-label{color:#a7abb1;font-size:.95rem;padding-top:10px}
.stat-label .ph{color:#6c7075}

/* ============ SECTIONS ============ */
.section{padding:clamp(64px,10vh,124px) 0}
.section-alt{background:var(--paper-alt);border-block:1px solid var(--line)}
.section-dark{background:#1d1d1b;border-block:1px solid #2a2a27}
.section-dark .section-head h2{color:#fff}
.section-dark .section-sub{color:#aeb2b7}
.section-head{max-width:64ch;margin:0 auto 58px;text-align:center}
.section-head h2{font-size:clamp(1.8rem,3.2vw,2.5rem)}
.section-sub{color:var(--ink-soft);margin-top:16px;font-size:1.02rem}

/* intro (centered text block, Price & Pierce style) */
.intro-inner{max-width:760px;margin:0 auto;text-align:center}
.intro-inner h2{font-size:clamp(1.8rem,3.2vw,2.5rem);margin:6px 0 18px}
.intro-lead{color:var(--ink-soft);font-size:1.15rem;max-width:60ch;margin:0 auto}
.text-link{display:inline-block;margin-top:26px;font-family:var(--font-mono);font-size:.82rem;
  letter-spacing:.04em;color:var(--red);border-bottom:1.5px solid #e6d8d4;padding-bottom:3px;transition:border-color .18s}
.text-link:hover{border-color:var(--red)}

/* stacked alternating rows with overlaid title (Price & Pierce 'scrolling-rows') */
/* pinned cross-dissolve: full-screen panels stacked, fading through each other on scroll.
   Image always on the left, text always on the right. */
.rows{position:relative;height:300vh;
  width:100vw;left:50%;right:50%;margin-left:-50vw;margin-right:-50vw}
.rows-stage{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden}
.row{position:absolute;inset:0;display:grid;grid-template-columns:1.7fr 1fr;align-items:stretch;
  transform:translateY(100%);background:var(--paper);will-change:transform}
.row:first-child{transform:none}
.row-media{position:relative;overflow:hidden}
.row-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.row-media::after{content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(12,14,18,.64) 0%,rgba(12,14,18,.3) 50%,rgba(12,14,18,.06) 100%)}
.row-title{position:absolute;z-index:2;left:clamp(24px,4vw,60px);top:50%;transform:translateY(-50%);
  color:#fff;font-weight:500;font-size:clamp(2rem,4vw,3.3rem);line-height:1.04;letter-spacing:-.01em;max-width:11ch}
.row-text{display:flex;flex-direction:column;justify-content:center;background:var(--paper);padding:clamp(30px,4vw,64px)}
.row-no{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.06em;color:var(--red);margin-bottom:14px}
.row-text p{color:var(--ink-soft);font-size:1.06rem;max-width:34ch}

/* certifications — static logo wall (same look as the 'Worked with' slider) */
.certs{background:var(--paper-alt);border-block:1px solid var(--line)}
.certs-inner{display:flex;flex-direction:column;align-items:center;padding-block:clamp(44px,6vh,64px)}
.certs-label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:30px}
.cert-logos{display:flex;align-items:center;justify-content:center;gap:clamp(34px,5vw,84px);
  flex-wrap:wrap;list-style:none}
.cert-logos li{display:flex;align-items:center;justify-content:center}
.cert-logos li a{display:inline-flex;align-items:center}
.cert-logos img{height:62px;width:auto;max-width:260px;object-fit:contain;display:block}

/* CTA band — dark, with faint duct blueprint decoration */
.cta-band{position:relative;background:#1d1d1b;overflow:hidden}
.cta-deco{position:absolute;bottom:0;left:0;right:0;width:100%;height:auto;pointer-events:none;opacity:1}
.cta-deco-mobile{display:none}
.cta-inner{position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.1);
  padding-block:clamp(56px,10vh,160px);text-align:center}
.cta-eyebrow{display:inline-block;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--red);margin-bottom:22px}
.cta-heading{display:inline-block;text-align:left;font-family:var(--font-display);font-weight:500;
  letter-spacing:-.02em;line-height:1.05;font-size:clamp(2.8rem,6.5vw,5.6rem);color:#fff}
.cta-heading a{position:relative;color:var(--red);text-decoration:none;
  display:inline-flex;align-items:baseline;gap:.12em;transition:color .15s}
.cta-heading a::after{content:"";position:absolute;left:0;right:0;bottom:.04em;height:.05em;
  background:currentColor;border-radius:2px}
.cta-heading a:hover{color:#e2705f}
.cta-arrow{display:inline-block;transition:transform .3s cubic-bezier(.45,0,.15,1)}
.cta-heading a:hover .cta-arrow{transform:translateX(.22em)}

/* 2-column large showcase (Price & Pierce 'Our Products' style) */
.showcase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(22px,3vw,34px)}
.showcase{display:block;border-radius:var(--r);overflow:hidden;background:var(--paper);
  border:1px solid var(--line);transition:transform .22s ease,box-shadow .22s ease}
.showcase:hover{transform:translateY(-4px);box-shadow:0 36px 64px -42px rgba(20,22,26,.5)}
.showcase-media{aspect-ratio:16/10;overflow:hidden}
.showcase-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.showcase:hover .showcase-media img{transform:scale(1.05)}
.showcase-body{padding:28px 30px 30px}
.showcase-tag{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--red)}
.showcase-body h3{font-size:1.55rem;letter-spacing:-.01em;margin:10px 0 10px}
.showcase-body p{color:var(--ink-soft);font-size:.98rem}
.showcase-meta{display:flex;gap:26px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.showcase-meta dt{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.showcase-meta dd{font-size:.9rem;margin-top:3px;font-weight:500}


/* full-bleed band */
.band{position:relative;color:#fff;overflow:hidden}
.band-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(.2)}
.band-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,18,22,.86) 0%,rgba(16,18,22,.62) 55%,rgba(16,18,22,.34) 100%)}
.band-inner{position:relative;padding-block:clamp(80px,14vh,150px);max-width:var(--maxw)}
.band-inner h2{font-size:clamp(2rem,4vw,3.2rem);max-width:18ch}
.band-inner p{margin-top:18px;max-width:48ch;color:#d7dbe0;font-size:1.05rem}


/* references */
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:54px}
blockquote{background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--red);
  border-radius:0 var(--r) var(--r) 0;padding:30px 32px}
blockquote p{font-size:1.16rem;color:var(--ink);font-family:var(--font-display);font-weight:600;line-height:1.4}
blockquote cite{display:block;margin-top:18px;font-family:var(--font-mono);font-size:.76rem;color:var(--muted);font-style:normal}
.clients{padding-top:40px;border-top:1px solid var(--line);text-align:center}
.clients-label{display:block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);margin-bottom:30px}
/* auto-scrolling logo slider */
.marquee{position:relative;overflow:hidden;width:100%;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.marquee-track{display:flex;align-items:center;gap:clamp(32px,4.5vw,76px);width:max-content;
  animation:marquee 55s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
/* transparent, every logo the same height */
.client-logo{flex:none;display:flex;align-items:center;justify-content:center;height:84px;
  font-family:var(--font-display);font-weight:600;font-size:1.05rem;color:var(--ink-soft);white-space:nowrap}
.client-logo img{height:60px;max-width:300px;width:auto;object-fit:contain;display:block}

/* contact */
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:start}
.contact-intro h2{font-size:clamp(1.8rem,3.2vw,2.5rem);margin-bottom:14px}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cc-hours{grid-column:1/-1}
.contact-card{display:flex;flex-direction:column;gap:8px;border:1px solid var(--line);border-radius:var(--r);
  padding:24px 26px;background:var(--paper);transition:transform .18s ease,border-color .18s,background .18s}
a.contact-card:hover{transform:translateY(-3px);border-color:#dde1e8;background:#fffaf9}
.cc-label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}
.contact-card.whatsapp .cc-label{color:#1aa851}
.cc-value{font-size:1.02rem;font-weight:500}
.contact-card.static{background:var(--paper-alt)}
.cc-fax{font-size:.95rem;color:var(--ink-soft);margin-top:6px;font-weight:500}

/* ============ CONTACT PAGE ============ */
.page-hero{position:relative;color:#fff;min-height:52vh;display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,22,.35) 0%,rgba(16,18,22,.8) 100%)}
.page-hero .container{position:relative;z-index:2;padding-block:clamp(52px,10vh,104px)}
.page-hero .kicker{color:#ffb9ad}
.page-hero h1{font-size:clamp(2.4rem,5vw,4rem);font-weight:600;max-width:16ch;letter-spacing:-.015em}
.page-hero p{margin-top:16px;color:#d7dbe0;font-size:1.12rem;max-width:46ch}
.office-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.office-media{border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;box-shadow:0 40px 70px -50px rgba(20,22,26,.6)}
.office-media img{width:100%;height:100%;object-fit:cover}
.office-body h2{font-size:clamp(1.6rem,2.8vw,2.2rem);margin:8px 0 16px}
.office-body p{color:var(--ink-soft);margin-bottom:6px}
.office-body p b{color:var(--ink);font-weight:600}
@media(max-width:960px){.office-grid{grid-template-columns:1fr;gap:28px}}

/* footer */
.site-footer{background:var(--ink);color:#cdd2da;padding:48px 0}
.footer-inner{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.footer-brand{color:#fff}.footer-brand .brand-sub{color:#69727c}
.footer-brand .bn-main{color:#fff}
.footer-brand .bn-sub{color:#8b939d}
.footer-meta,.footer-copy{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.02em;color:#8b939d}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.22,.61,.36,1),transform .8s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.hero .reveal:nth-child(1){transition-delay:.05s}
.hero .reveal:nth-child(2){transition-delay:.14s}
.hero .reveal:nth-child(3){transition-delay:.24s}
.hero .reveal:nth-child(4){transition-delay:.32s}
.services-grid .service:nth-child(2){transition-delay:.08s}
.services-grid .service:nth-child(3){transition-delay:.16s}
.services-grid .service:nth-child(4){transition-delay:.24s}
.services-grid .service:nth-child(5){transition-delay:.32s}
.services-grid .service:nth-child(6){transition-delay:.40s}
.projects-grid .project:nth-child(2){transition-delay:.1s}
.projects-grid .project:nth-child(3){transition-delay:.2s}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .hero{min-height:auto}
  .site-header{grid-template-columns:1fr auto}
  .site-nav,.header-cta{display:none}
  .nav-toggle{display:flex}
  .site-nav.open{display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;top:calc(100% + 8px);right:0;min-width:200px;background:#fff;
    border:1px solid var(--line);border-radius:14px;
    box-shadow:0 16px 48px -24px rgba(0,0,0,.28);z-index:49;overflow:hidden}
  .site-nav.open a{padding:14px 22px;border-bottom:1px solid var(--line);font-size:.97rem;font-weight:500;color:var(--ink)}
  .site-nav.open a:hover{background:var(--paper-alt);color:var(--red)}
  .site-nav.open a:last-of-type{border-bottom:none}
  .hero-inner{min-height:0;padding-block:clamp(48px,9vh,90px)}
  .hero-copy{max-width:64%}
  .hero-veil{background:linear-gradient(95deg, rgba(244,246,248,.95) 0%, rgba(244,246,248,.7) 42%, rgba(244,246,248,.15) 70%, rgba(244,246,248,0) 86%)}
  .stats-inner{grid-template-columns:1fr;gap:30px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:30px}
  .services-grid{grid-template-columns:1fr 1fr}
  .rows{height:auto}
  .rows-stage{position:static;height:auto}
  .row{position:relative;inset:auto;transform:none;display:block;height:auto;overflow:visible}
  .row-media{aspect-ratio:16/10}
  .row-title{font-size:clamp(1.8rem,7vw,2.4rem)}
  .showcase-grid{grid-template-columns:1fr 1fr;max-width:860px;margin:0 auto}
  .showcase-grid .showcase:nth-child(3){display:none}
  .projects-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .quotes{grid-template-columns:1fr}
}
@media (max-width:600px){
  .cta-deco{display:none}
  .cta-deco-mobile{display:block;position:absolute;right:0;bottom:0;width:100%;height:auto;pointer-events:none;opacity:.55}
  .hero-copy{max-width:100%}
  .brand-logo{height:38px}
  .bn-main{font-size:1rem}
  .bn-sub{font-size:.5rem;letter-spacing:.1em}
  .hero-veil{background:linear-gradient(180deg, rgba(244,246,248,.92) 0%, rgba(244,246,248,.7) 46%, rgba(244,246,248,.4) 100%)}
  .leaders,.label-3d{display:none}
  .services-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .cc-hours{grid-column:1}
  .showcase-grid{grid-template-columns:1fr}
  .showcase-grid .showcase:nth-child(3){display:block}
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .project:hover .project-media img{transform:none}
  .rows{height:auto}
  .rows-stage{position:static;height:auto}
  .row{position:relative;inset:auto;transform:none!important;height:100vh}
  .marquee-track{animation:none;flex-wrap:wrap;justify-content:center;width:auto;gap:28px}
  *{animation-duration:.001ms!important}
}