/* ============================================================
   BUILDING E&C — Diseño & Construcción  ·  TEMA CLARO (fondo blanco)
   Paleta: #FFFFFF #000000 #FF5C00  ·  Tipografía: Anton + Barlow
   ============================================================ */
:root{
  --orange:#FF5C00;
  --orange-soft:#ff7a2e;
  --orange-deep:#d94d00;
  --black:#0a0a0a;
  --ink:#000000;
  --white:#ffffff;
  --cream:#f6f4f1;
  --cream-2:#efebe6;
  --line:#e4e0db;
  --text:#16130f;
  --muted:#5d5751;
  --muted-2:#8b857e;
  --maxw:1280px;
  --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Barlow',system-ui,sans-serif;
  background:var(--white);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{font-family:'Anton',sans-serif;font-weight:400;text-transform:uppercase;letter-spacing:.01em;line-height:.95;color:var(--text)}
.cond{font-family:'Barlow Condensed',sans-serif}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.orange{color:var(--orange)}
::selection{background:var(--orange);color:#fff}

/* scrollbar */
::-webkit-scrollbar{width:11px}
::-webkit-scrollbar-track{background:var(--cream)}
::-webkit-scrollbar-thumb{background:#cfc9c2}
::-webkit-scrollbar-thumb:hover{background:var(--orange)}

/* ---------- Header ---------- */
header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .4s var(--ease),padding .4s var(--ease),box-shadow .4s,border-color .4s;padding:22px 0;border-bottom:1px solid transparent}
header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);padding:12px 0;box-shadow:0 8px 30px rgba(0,0,0,.07);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{position:relative;display:inline-block;line-height:0}
.logo img{height:52px;width:auto;display:block;transition:height .4s var(--ease),opacity .35s}
.logo .lg-on-light{position:absolute;top:0;left:0;opacity:0}
header.scrolled .logo img{height:42px}
header.scrolled .lg-on-dark{opacity:0}
header.scrolled .lg-on-light{opacity:1}
.menu{display:flex;gap:34px;align-items:center;list-style:none}
.menu a{font-family:'Barlow Condensed',sans-serif;font-size:1.02rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;position:relative;padding:4px 0;color:rgba(255,255,255,.82);transition:color .3s}
header.scrolled .menu a{color:var(--muted)}
.menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--orange);transition:width .35s var(--ease)}
.menu a:hover{color:#fff}
header.scrolled .menu a:hover{color:var(--text)}
.menu a:hover::after{width:100%}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:'Barlow Condensed',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.09em;font-size:1.02rem;padding:13px 26px;background:var(--orange);color:#fff;border:none;cursor:pointer;transition:transform .3s var(--ease),background .3s,box-shadow .3s;clip-path:polygon(0 0,100% 0,100% 100%,10px 100%);box-shadow:0 0 0 rgba(255,92,0,0)}
.btn:hover{background:var(--orange-soft);transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,92,0,.32)}
.btn.ghost{background:transparent;border:2px solid rgba(255,255,255,.45);color:#fff;clip-path:none}
.btn.ghost:hover{border-color:var(--orange);background:transparent;color:var(--orange)}
.btn .arr{transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.burger span{width:26px;height:2px;background:#fff;transition:.35s var(--ease)}
header.scrolled .burger span{background:var(--text)}
.burger.open span{background:#fff}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile menu */
.mobile-menu{position:fixed;inset:0;background:var(--ink);z-index:999;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:30px;transform:translateY(-100%);transition:transform .55s var(--ease);visibility:hidden}
.mobile-menu.open{transform:translateY(0);visibility:visible}
.mobile-menu a{font-family:'Anton',sans-serif;font-size:2.2rem;text-transform:uppercase;color:#fff;transition:color .3s}
.mobile-menu a:hover{color:var(--orange)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:var(--ink)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;animation:kenburns 22s ease-in-out infinite alternate}
@keyframes kenburns{from{transform:scale(1.08) translate(0,0)}to{transform:scale(1.2) translate(-2%,-2%)}}
.hero-bg::after{content:"";position:absolute;inset:0;background:
  linear-gradient(105deg,rgba(0,0,0,.92) 0%,rgba(0,0,0,.74) 38%,rgba(0,0,0,.32) 70%,rgba(255,92,0,.18) 100%)}
.hero-grid{position:absolute;inset:0;z-index:1;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(120deg,#000 0%,transparent 60%)}
.hero-inner{position:relative;z-index:2;padding-top:90px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:'Barlow Condensed',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.22em;font-size:.95rem;color:var(--orange);margin-bottom:24px}
.hero .eyebrow::before{content:"";width:46px;height:2px;background:var(--orange)}
.hero h1{font-size:clamp(3rem,8.5vw,7.4rem);color:#fff;max-width:15ch;text-shadow:0 4px 40px rgba(0,0,0,.5)}
.hero h1 .o{color:var(--orange);display:inline-block}
.hero p.lead{margin-top:26px;max-width:48ch;font-size:clamp(1.05rem,1.6vw,1.28rem);color:rgba(255,255,255,.85);font-weight:300}
.hero-cta{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap}
.scroll-cue{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:3;display:flex;flex-direction:column;align-items:center;gap:8px;font-family:'Barlow Condensed',sans-serif;letter-spacing:.2em;font-size:.7rem;text-transform:uppercase;color:rgba(255,255,255,.7)}
.scroll-cue .line{width:1px;height:46px;background:linear-gradient(var(--orange),transparent);position:relative;overflow:hidden}
.scroll-cue .line::after{content:"";position:absolute;top:0;left:0;width:100%;height:50%;background:#fff;animation:scrolldown 1.8s var(--ease) infinite}
@keyframes scrolldown{0%{transform:translateY(-100%)}100%{transform:translateY(200%)}}

/* reveal animation utility */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}.d5{transition-delay:.4s}

/* ---------- Stats bar ---------- */
.stats{background:var(--orange);position:relative;overflow:hidden}
.stats::before{content:"";position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 60%)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);position:relative;z-index:1}
.stat{padding:54px 28px;text-align:center;border-right:1px solid rgba(0,0,0,.12)}
.stat:last-child{border-right:none}
.stat .num{font-family:'Anton',sans-serif;font-size:clamp(2.8rem,5vw,4.2rem);color:#fff;line-height:1}
.stat .lab{font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:rgba(0,0,0,.72);margin-top:8px;font-size:1rem}

/* ---------- Section base ---------- */
section{position:relative}
.sec{padding:120px 0}
.bg-cream{background:var(--cream)}
.sec-head{margin-bottom:60px;max-width:760px}
.tag{display:inline-flex;align-items:center;gap:12px;font-family:'Barlow Condensed',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.2em;font-size:.92rem;color:var(--orange);margin-bottom:18px}
.tag::before{content:"";width:34px;height:2px;background:var(--orange)}
.sec h2{font-size:clamp(2.3rem,5vw,4rem)}
.sec h2 .o{color:var(--orange)}
.sec-head p{margin-top:18px;color:var(--muted);font-size:1.12rem;font-weight:300}

/* ---------- Services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc{position:relative;overflow:hidden;background:var(--white);border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .5s var(--ease),border-color .5s,box-shadow .5s}
.svc:hover{transform:translateY(-8px);border-color:var(--orange);box-shadow:0 24px 50px rgba(0,0,0,.1)}
.svc-img{position:relative;height:220px;overflow:hidden}
.svc-img img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.svc:hover .svc-img img{transform:scale(1.1)}
.svc-num{position:absolute;top:16px;right:18px;font-family:'Anton',sans-serif;font-size:2rem;color:#fff;z-index:2;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.svc-c{padding:30px 30px 34px;position:relative}
.svc-c .ic{width:48px;height:48px;margin:-54px 0 16px;color:#fff;background:var(--orange);padding:11px;position:relative;z-index:3;box-shadow:0 10px 24px rgba(255,92,0,.35)}
.svc h3{font-size:1.5rem;margin-bottom:10px}
.svc p{color:var(--muted);font-size:1rem;font-weight:300}
.svc .more{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:var(--orange);font-size:.95rem;transition:gap .3s}
.svc:hover .more{gap:14px}

/* ---------- Marquee gallery ---------- */
.gallery{background:var(--cream);padding:110px 0 120px;overflow:hidden}
.marquee{display:flex;gap:20px;width:max-content;animation:scrollx 42s linear infinite}
.marquee.rev{animation-direction:reverse;animation-duration:50s;margin-top:20px}
.marquee:hover{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}
.mq-item{position:relative;width:420px;height:300px;flex:0 0 auto;overflow:hidden;background:#ddd}
.mq-item img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease),filter .5s;filter:grayscale(.15)}
.mq-item::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.6),transparent 50%);opacity:.55;transition:opacity .4s}
.mq-item .cap{position:absolute;left:20px;bottom:16px;z-index:2;color:#fff;font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.08em;font-weight:600;font-size:1.05rem;opacity:0;transform:translateY(10px);transition:.4s var(--ease)}
.mq-item:hover img{transform:scale(1.08);filter:grayscale(0)}
.mq-item:hover .cap{opacity:1;transform:none}
.mq-item:hover::after{opacity:1}

/* ---------- Process timeline ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:30px}
.step{position:relative;padding:36px 26px 36px 0}
.step .n{font-family:'Anton',sans-serif;font-size:1.1rem;width:62px;height:62px;display:flex;align-items:center;justify-content:center;background:var(--white);border:2px solid var(--orange);color:var(--orange);border-radius:50%;margin-bottom:22px;transition:.4s var(--ease)}
.step:hover .n{background:var(--orange);color:#fff;transform:scale(1.08)}
.step::before{content:"";position:absolute;top:31px;left:62px;right:0;height:2px;background:repeating-linear-gradient(90deg,#d8d2cb 0 10px,transparent 10px 18px)}
.step:last-child::before{display:none}
.step h3{font-size:1.45rem;margin-bottom:8px}
.step p{color:var(--muted);font-weight:300;font-size:.98rem;padding-right:18px}

/* ---------- Why / features ---------- */
.why-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:70px;align-items:center}
.why-feats{display:grid;grid-template-columns:1fr 1fr;gap:34px}
.feat .ic{width:44px;height:44px;color:var(--orange);margin-bottom:14px}
.feat h3{font-size:1.3rem;margin-bottom:6px}
.feat p{color:var(--muted);font-weight:300;font-size:.98rem}
.why-visual{position:relative;aspect-ratio:4/5;overflow:hidden;background:#ddd}
.why-visual img{width:100%;height:100%;object-fit:cover}
.why-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,transparent 55%,rgba(255,92,0,.22))}
.why-badge{position:absolute;left:0;bottom:0;background:var(--orange);padding:24px 30px;z-index:2}
.why-badge .big{font-family:'Anton',sans-serif;font-size:2.6rem;line-height:1;color:#fff}
.why-badge .sm{font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:rgba(0,0,0,.78)}

/* ---------- About strip ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-img{position:relative;aspect-ratio:1/1;overflow:hidden;background:#ddd}
.about-img img{width:100%;height:100%;object-fit:cover}
.about-txt p{color:var(--muted);font-weight:300;font-size:1.1rem;margin-top:18px}
.about-list{list-style:none;margin-top:26px;display:grid;gap:14px}
.about-list li{display:flex;gap:14px;align-items:flex-start;font-weight:400;color:var(--text)}
.about-list .chk{flex:0 0 auto;width:24px;height:24px;background:var(--orange);display:flex;align-items:center;justify-content:center;color:#fff;margin-top:3px;font-size:.85rem}

/* ---------- Testimonials ---------- */
.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tcard{background:var(--cream);border:1px solid var(--line);padding:36px 32px;position:relative;transition:.4s var(--ease)}
.tcard:hover{border-color:var(--orange);transform:translateY(-6px);box-shadow:0 20px 44px rgba(0,0,0,.08)}
.tcard .q{font-family:'Anton',sans-serif;font-size:3.4rem;color:var(--orange);line-height:.6;height:30px}
.tcard p{color:var(--text);font-weight:300;font-size:1.04rem;margin:18px 0 22px}
.tcard .who{display:flex;align-items:center;gap:14px}
.tcard .av{width:46px;height:46px;border-radius:50%;background:var(--orange);display:flex;align-items:center;justify-content:center;font-family:'Anton',sans-serif;color:#fff}
.tcard .who b{display:block;font-weight:600}
.tcard .who span{font-size:.9rem;color:var(--muted-2)}

/* ---------- CTA / Contact ---------- */
.contact{background:var(--cream)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.contact-info h2{font-size:clamp(2.2rem,4.5vw,3.6rem)}
.contact-info p{color:var(--muted);font-weight:300;margin-top:16px;font-size:1.1rem}
.cinfo{margin-top:34px;display:grid;gap:20px}
.cinfo .row{display:flex;gap:16px;align-items:center}
.cinfo .ic{width:46px;height:46px;flex:0 0 auto;background:var(--white);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--orange);transition:.3s}
.cinfo .row:hover .ic{background:var(--orange);color:#fff;border-color:var(--orange)}
.cinfo .row b{display:block;font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.1em;color:var(--muted-2);font-size:.82rem}
.cinfo .row span{font-size:1.08rem;color:var(--text)}
form{background:var(--white);border:1px solid var(--line);padding:38px;box-shadow:0 18px 50px rgba(0,0,0,.06)}
.field{margin-bottom:20px}
.field label{display:block;font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.1em;font-size:.85rem;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;background:var(--cream);border:1px solid var(--line);color:var(--text);padding:14px 16px;font-family:'Barlow',sans-serif;font-size:1rem;transition:border-color .3s,background .3s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--orange);background:#fff}
.field textarea{resize:vertical;min-height:110px}
form .btn{width:100%;justify-content:center;clip-path:none;margin-top:6px}
.form-note{font-size:.85rem;color:var(--muted-2);margin-top:14px;text-align:center}

/* map */
.map{margin-top:30px;width:100%;height:280px;border:1px solid var(--line);filter:grayscale(.25)}

/* ---------- Footer ---------- */
footer{background:var(--ink);color:#cfc9c2;padding:80px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
footer .logo img{height:60px;margin-bottom:20px;position:static;opacity:1}
footer .blurb{color:#9a948d;font-weight:300;max-width:36ch;line-height:1.7}
.foot-col h4{font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.12em;color:#fff;font-size:1.08rem;margin-bottom:20px}
.foot-col a,.foot-col p{display:block;color:#9a948d;margin-bottom:11px;font-weight:300;transition:color .3s}
.foot-col a:hover{color:var(--orange)}
.foot-col .ic-line{display:flex;gap:10px;align-items:flex-start;margin-bottom:13px;color:#9a948d}
.foot-col .ic-line svg{flex:0 0 auto;color:var(--orange);margin-top:3px}
.socials{display:flex;gap:12px;margin-top:22px}
.socials a{width:42px;height:42px;border:1px solid #2c2926;display:flex;align-items:center;justify-content:center;color:#cfc9c2;transition:.3s}
.socials a:hover{background:var(--orange);border-color:var(--orange);color:#fff;transform:translateY(-3px)}
.foot-bot{border-top:1px solid #232020;margin-top:56px;padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:#7d776f;font-size:.9rem;font-weight:300}
.foot-bot a{color:var(--orange);font-weight:500;transition:color 0.3s var(--ease),text-decoration 0.3s}
.foot-bot a:hover{color:var(--orange-soft);text-decoration:underline}

/* ---------- Floating Elements ---------- */
.floating-socials {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1002;
  background-color: var(--orange);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px 12px;
  border-radius: 12px 0 0 12px;
  box-shadow: -2px 4px 15px rgba(0,0,0,0.25);
  transition: transform 0.3s var(--ease);
}
.floating-socials a {
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s var(--ease), color 0.2s;
}
.floating-socials a:hover {
  transform: scale(1.2);
  color: var(--black);
}

.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1002;
  background-color: #25D366;
  color: #ffffff;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 4px 15px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5);
}

/* ---------- Responsive ---------- */
@media(max-width:1024px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::before{display:none}
  .test-grid{grid-template-columns:1fr 1fr}
  .why-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:46px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:none}
  .stat{border-bottom:1px solid rgba(0,0,0,.12)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .menu{display:none}
  .nav .btn{display:none}
  .burger{display:flex}
  .sec{padding:80px 0}
  .svc-grid,.test-grid,.foot-grid{grid-template-columns:1fr}
  .why-feats{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .mq-item{width:300px;height:220px}
  .wrap{padding:0 20px}
}