/* =========================================================
   COD · Construcción y Servicios — Design System
   ========================================================= */

:root{
  --black:#0a0a0a;
  --near-black:#111111;
  --ink:#161616;
  --gray-900:#1c1c1c;
  --gray-800:#2b2b2b;
  --gray-600:#5a5a5a;
  --gray-400:#8c8c8c;
  --gray-200:#d8d8d8;
  --gray-100:#eeeeee;
  --gray-50:#f6f5f3;
  --white:#ffffff;
  --gold:#B89A67;
  --gold-dim:#8f7850;
  --gold-soft:rgba(184,154,103,.14);

  --bg:var(--white);
  --fg:var(--black);
  --muted:var(--gray-600);
  --line:rgba(10,10,10,.1);
  --surface:var(--gray-50);

  --font-display:"Fraunces", "Times New Roman", serif;
  --font-body:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --container:1280px;
  --gutter:clamp(1.5rem, 4vw, 4rem);
  --radius:2px;
  --ease:cubic-bezier(.16,.84,.44,1);
  --ease-soft:cubic-bezier(.22,.61,.36,1);

  --nav-h:88px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:auto;}
html.no-js{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,textarea,select{font:inherit;color:inherit;}
svg{display:block;}

::selection{background:var(--gold);color:var(--black);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}

/* ---------- Typography ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--font-body);
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold-dim);
  font-weight:600;
}
.eyebrow::before{
  content:"";
  width:28px;height:1px;
  background:var(--gold);
  display:inline-block;
}
h1,.h1{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(2.6rem, 6vw, 5.4rem);
  line-height:1.02;
  letter-spacing:-.01em;
}
h2,.h2{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(2rem, 4vw, 3.4rem);
  line-height:1.08;
  letter-spacing:-.01em;
}
h3,.h3{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(1.3rem, 2vw, 1.7rem);
  line-height:1.2;
}
h4,.h4{
  font-family:var(--font-body);
  font-weight:600;
  font-size:1rem;
  text-transform:uppercase;
  letter-spacing:.04em;
}
em,.italic{font-style:italic;color:var(--gold-dim);}
.lead{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--muted);font-weight:400;line-height:1.6;max-width:44ch;}
.mono-num{font-family:var(--font-display);font-style:italic;color:var(--gold);}

/* ---------- Split text word spans ---------- */
.split-line{overflow:hidden;display:block;}
.word{display:inline-block;will-change:transform;}

/* ---------- Loader ---------- */
#loader{
  position:fixed;inset:0;z-index:9999;
  background:var(--black);
  display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:1.2rem;
}
#loader .loader-mark{
  font-family:var(--font-display);
  font-style:italic;
  font-size:1.1rem;
  color:var(--gray-200);
  letter-spacing:.06em;
}
#loader .loader-logo{
  width:min(220px, 60vw);
  height:auto;
  display:block;
}
#loader .loader-bar{
  width:220px;height:1px;background:rgba(255,255,255,.15);position:relative;overflow:hidden;
}
#loader .loader-bar .fill{
  position:absolute;left:0;top:0;bottom:0;width:0%;background:var(--gold);
}
#loader .loader-pct{font-size:.7rem;letter-spacing:.15em;color:rgba(255,255,255,.4);}
body.loaded #loader{pointer-events:none;}

/* ---------- Cursor ---------- */
.cursor-dot,.cursor-ring{
  position:fixed;top:0;left:0;pointer-events:none;z-index:9998;
  border-radius:50%;
  transform:translate(-50%,-50%);
  mix-blend-mode:difference;
}
.cursor-dot{width:6px;height:6px;background:#fff;}
.cursor-ring{width:34px;height:34px;border:1px solid rgba(255,255,255,.6);transition:width .25s var(--ease),height .25s var(--ease),opacity .25s;}
.cursor-ring.is-hover{width:64px;height:64px;background:rgba(255,255,255,.08);}
@media(hover:none),(pointer:coarse){.cursor-dot,.cursor-ring{display:none;}}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:500;
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--gutter);
  background:rgba(10,10,10,.5);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  color:#fff;
  transition:background .3s;
}
.nav-brand{display:flex;align-items:center;gap:.6rem;}
.nav-mark{width:30px;height:30px;color:#fff;}
.nav-logo{height:32px;width:auto;display:block;}
.nav-word{font-family:var(--font-display);font-size:1.05rem;letter-spacing:.02em;}
.nav-word small{display:block;font-family:var(--font-body);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;opacity:.65;font-weight:500;}
.nav-links{display:flex;gap:2.4rem;}
.nav-link{
  font-size:.82rem;letter-spacing:.03em;
  position:relative;padding:.3rem 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:#fff;
  transition:right .35s var(--ease);
}
.nav-link:hover::after,.nav-link.is-active::after{right:0;}
.nav-right{display:flex;align-items:center;gap:1.6rem;}
.nav-cta{
  font-size:.78rem;letter-spacing:.03em;
  border:1px solid rgba(255,255,255,.5);
  padding:.7rem 1.4rem;border-radius:100px;
}
.nav-burger{display:none;flex-direction:column;gap:5px;width:26px;}
.nav-burger span{height:1px;background:#fff;width:100%;transition:transform .3s var(--ease),opacity .3s;}

.nav-mobile{
  position:fixed;inset:0;z-index:480;background:var(--black);color:#fff;
  display:flex;flex-direction:column;justify-content:center;gap:1.2rem;
  padding:0 var(--gutter);
  transform:translateY(-100%);
  transition:transform .5s var(--ease);
}
.nav-mobile.is-open{transform:translateY(0);}
.nav-mobile a{font-family:var(--font-display);font-size:2.2rem;font-style:italic;}

@media(max-width:900px){
  .nav-links,.nav-cta-desktop{display:none;}
  .nav-burger{display:flex;}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-size:.82rem;letter-spacing:.04em;font-weight:500;
  padding:1rem 1.8rem;border-radius:100px;
  position:relative;overflow:hidden;
  transition:transform .4s var(--ease);
}
.btn-solid{background:var(--black);color:#fff;}
.btn-solid:hover{transform:translateY(-2px);}
.btn-outline{border:1px solid var(--line);color:var(--fg);}
.btn-outline:hover{border-color:var(--fg);}
.btn-gold{background:var(--gold);color:var(--black);}
.btn-arrow{width:14px;height:14px;transition:transform .35s var(--ease);}
.btn:hover .btn-arrow{transform:translateX(4px);}
.magnetic{will-change:transform;}

/* ---------- Sections ---------- */
section{position:relative;padding:clamp(5rem,10vw,9rem) 0;}
.section-head{max-width:760px;margin-bottom:clamp(2.5rem,6vw,4.5rem);}
.section-head h2{margin-top:.9rem;margin-bottom:1.1rem;}

.bg-black{background:var(--black);color:#fff;position:relative;overflow:hidden;}
.bg-black .muted{color:rgba(255,255,255,.55);}
.bg-black .eyebrow{color:var(--gold);}
.bg-black .btn-outline{border-color:rgba(255,255,255,.35);color:#fff;}
.bg-black .btn-outline:hover{border-color:#fff;}
.bg-black > .container{position:relative;z-index:1;}
.bg-surface{background:var(--surface);}
.muted{color:var(--muted);}

.divider{height:1px;background:var(--line);width:100%;}

/* ---------- Hero ---------- */
.hero{
  min-height:100svh;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding-top:calc(var(--nav-h) + 2rem);
  padding-bottom:3rem;
  position:relative;
  background:var(--black);color:#fff;
  overflow:hidden;
}
.hero-content{position:relative;z-index:2;}
.hero-kicker{font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:1.6rem;display:block;}
.hero h1{max-width:16ch;}
.hero-sub{margin-top:1.6rem;max-width:46ch;color:rgba(255,255,255,.68);font-size:1.1rem;}
.hero-actions{display:flex;gap:1rem;margin-top:2.4rem;flex-wrap:wrap;}
.hero-actions .btn-outline{border-color:rgba(255,255,255,.35);color:#fff;}
.hero-actions .btn-outline:hover{border-color:#fff;}
.hero-actions .btn-solid{background:#fff;color:var(--black);}

/* ---------- Starfield / wind ambient background (used on all dark sections) ---------- */
.starfield{
  position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none;
  background:
    radial-gradient(80% 60% at 25% 15%, rgba(184,154,103,.14), transparent 60%),
    radial-gradient(70% 50% at 80% 85%, rgba(184,154,103,.08), transparent 60%);
}
.starfield .star{
  position:absolute;border-radius:50%;background:#fff;
  opacity:.2;animation:starTwinkle var(--dur,4s) ease-in-out infinite;animation-delay:var(--delay,0s);
  will-change:opacity,transform;
}
@keyframes starTwinkle{
  0%,100%{opacity:.12;transform:scale(1);}
  50%{opacity:1;transform:scale(1.3);}
}
.starfield .streak{
  position:absolute;top:0;left:0;
  width:180px;height:1.5px;border-radius:2px;
  background:linear-gradient(90deg, rgba(184,154,103,0) 0%, rgba(184,154,103,.85) 55%, #fff 100%);
  opacity:0;filter:blur(.2px);
  animation:starStreak var(--dur,8s) linear infinite;animation-delay:var(--delay,0s);
  will-change:transform,opacity;
}
@keyframes starStreak{
  0%{transform:translate(-15vw,-8vh) rotate(-16deg);opacity:0;}
  4%{opacity:1;}
  22%{transform:translate(55vw,26vh) rotate(-16deg);opacity:0;}
  100%{opacity:0;transform:translate(55vw,26vh) rotate(-16deg);}
}
@media (prefers-reduced-motion: reduce){
  .starfield .star,.starfield .streak{animation:none;opacity:.35;}
}
.hero-meta{
  position:relative;z-index:2;
  display:flex;justify-content:space-between;align-items:flex-end;
  margin-top:clamp(3rem,8vw,6rem);
  padding-top:2rem;border-top:1px solid rgba(255,255,255,.15);
  flex-wrap:wrap;gap:2rem;
}
.hero-stats{display:flex;gap:clamp(1.6rem,4vw,3.6rem);}
.hero-stat strong{display:block;font-family:var(--font-display);font-style:italic;font-size:2rem;color:var(--gold);}
.hero-stat span{font-size:.75rem;letter-spacing:.05em;color:rgba(255,255,255,.55);text-transform:uppercase;}
.scroll-cue{display:flex;align-items:center;gap:.7rem;font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;color:rgba(255,255,255,.5);}
.scroll-cue i{width:1px;height:34px;background:rgba(255,255,255,.4);display:block;position:relative;overflow:hidden;}
.scroll-cue i::after{content:"";position:absolute;top:-100%;left:0;right:0;height:100%;background:#fff;animation:scrollcue 1.8s ease-in-out infinite;}
@keyframes scrollcue{0%{top:-100%;}60%{top:100%;}100%{top:100%;}}

/* page hero (interior pages) */
.page-hero{
  padding-top:calc(var(--nav-h) + 5rem);
  padding-bottom:4rem;
  background:var(--black);color:#fff;
  position:relative;overflow:hidden;
}
.page-hero > .container{position:relative;z-index:1;}
.page-hero .eyebrow{color:var(--gold);}
.page-hero .btn-outline{border-color:rgba(255,255,255,.35);color:#fff;}
.page-hero .btn-outline:hover{border-color:#fff;}
.breadcrumb{font-size:.75rem;color:rgba(255,255,255,.45);letter-spacing:.03em;margin-bottom:1.4rem;}
.breadcrumb a:hover{color:#fff;}

/* ---------- Grid / Cards ---------- */
.grid{display:grid;gap:var(--gutter);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media(max-width:1000px){.grid-4{grid-template-columns:repeat(2,1fr);}.grid-3{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{
  border:1px solid var(--line);
  padding:2.2rem;
  border-radius:var(--radius);
  position:relative;
  background:var(--bg);
  transition:border-color .35s var(--ease), transform .5s var(--ease);
}
.card:hover{border-color:var(--gold);}
.card-num{font-family:var(--font-display);font-style:italic;color:var(--gold);font-size:.95rem;}
.card h3{margin-top:1.2rem;margin-bottom:.7rem;}
.card p{color:var(--muted);font-size:.95rem;}

/* service card w/ image */
.service-card{
  display:block;position:relative;overflow:hidden;border-radius:var(--radius);
  aspect-ratio:4/5;
}
.service-card .img-wrap{position:absolute;inset:0;overflow:hidden;}
.service-card img{
  width:100%;height:100%;object-fit:cover;object-position:center 20%;
  transform:scale(1.08);transition:transform 1.1s var(--ease);
  filter:grayscale(.5) contrast(1.08) brightness(.8) sepia(.14);
}
.service-card:hover img{transform:scale(1.16);}
.service-card::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg, rgba(10,10,10,.1) 0%, rgba(10,10,10,.15) 30%, rgba(10,10,10,.95) 100%);
}
.service-card::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(160deg, rgba(184,154,103,.28), rgba(10,10,10,.1) 55%);
  mix-blend-mode:multiply;
}
.service-card .content{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:1.8rem;color:#fff;}
.service-card .service-num{font-size:.72rem;letter-spacing:.15em;color:var(--gold);text-transform:uppercase;}
.service-card h3{margin-top:.5rem;color:#fff;}
.service-card .arrow-circle{
  position:absolute;top:1.4rem;right:1.4rem;z-index:2;
  width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,.4);
  display:flex;align-items:center;justify-content:center;
  transition:background .35s var(--ease),transform .5s var(--ease);
}
.service-card:hover .arrow-circle{background:var(--gold);border-color:var(--gold);transform:rotate(45deg);}

/* image reveal mask */
.img-reveal{position:relative;overflow:hidden;}
.img-reveal img{
  width:100%;height:100%;object-fit:cover;object-position:center 20%;
  filter:grayscale(.4) contrast(1.06) brightness(.92) sepia(.1);
}
.img-reveal .mask{position:absolute;inset:0;background:var(--black);z-index:2;transform-origin:bottom;}
.img-reveal::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(160deg, rgba(184,154,103,.22), rgba(10,10,10,.12) 55%);
  mix-blend-mode:multiply;
}

/* ---------- Feature list / process ---------- */
.process-list{counter-reset:proc;margin-top:2rem;}
.process-item{
  display:grid;grid-template-columns:80px 1fr;gap:1.5rem;
  padding:2.2rem 0;border-top:1px solid var(--line);
  align-items:start;
}
.process-item:last-child{border-bottom:1px solid var(--line);}
.process-index{font-family:var(--font-display);font-style:italic;font-size:1.6rem;color:var(--gold);}
.process-item h4{font-family:var(--font-display);font-size:1.3rem;font-weight:500;text-transform:none;letter-spacing:0;margin-bottom:.5rem;}
.process-item p{color:var(--muted);max-width:60ch;}

/* ---------- Marquee (clients) ---------- */
.marquee{overflow:hidden;position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);}
.marquee-track{display:flex;width:max-content;gap:clamp(3.5rem,7vw,6rem);align-items:center;padding:3.2rem 0;animation:marquee 34s linear infinite;}
.marquee-track img{height:clamp(48px,6vw,68px);width:auto;object-fit:contain;opacity:.7;transition:opacity .35s,transform .35s;}
.marquee-track img:hover{opacity:1;transform:scale(1.06);}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ---------- FAQ accordion ---------- */
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;
  padding:1.6rem 0;text-align:left;gap:1rem;
}
.faq-q h4{font-family:var(--font-display);font-size:1.1rem;font-weight:500;letter-spacing:0;text-transform:none;}
.faq-plus{width:20px;height:20px;position:relative;flex:none;}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--fg);transition:transform .4s var(--ease);}
.faq-plus::before{left:0;top:50%;width:100%;height:1px;transform:translateY(-50%);}
.faq-plus::after{top:0;left:50%;height:100%;width:1px;transform:translateX(-50%);}
.faq-item.is-open .faq-plus::after{transform:translateX(-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .5s var(--ease);}
.faq-a p{padding-bottom:1.6rem;color:var(--muted);max-width:60ch;}

/* ---------- Forms ---------- */
.form{display:grid;gap:1.4rem;}
.field{display:flex;flex-direction:column;gap:.5rem;}
.field label{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);}
.field input,.field textarea,.field select{
  background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:.7rem 0;font-size:1rem;color:var(--fg);
  transition:border-color .3s;
}
.bg-black .field input,.bg-black .field textarea,.bg-black .field select{border-bottom-color:rgba(255,255,255,.2);color:#fff;}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--gold);}
.field textarea{resize:vertical;min-height:100px;}
.form-note{font-size:.85rem;color:var(--gold-dim);}

/* ---------- Footer ---------- */
.footer{background:var(--black);color:#fff;padding:5rem 0 2rem;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:3rem;padding-bottom:4rem;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .nav-word{font-size:1.4rem;}
.footer-brand .nav-logo{height:38px;}
.footer-brand p{margin-top:1.2rem;color:rgba(255,255,255,.55);max-width:32ch;font-size:.92rem;}
.footer-col h4{color:rgba(255,255,255,.4);margin-bottom:1.2rem;font-size:.72rem;}
.footer-col li{margin-bottom:.7rem;}
.footer-col a{color:rgba(255,255,255,.78);font-size:.92rem;transition:color .3s;}
.footer-col a:hover{color:var(--gold);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:2rem;flex-wrap:wrap;gap:1rem;}
.footer-bottom p{font-size:.8rem;color:rgba(255,255,255,.4);}
.footer-social{display:flex;gap:1.2rem;}
@media(max-width:900px){.footer-top{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.footer-top{grid-template-columns:1fr;}}

/* ---------- WhatsApp float ---------- */
.wa-float{
  position:fixed;right:1.6rem;bottom:1.6rem;z-index:400;
  width:56px;height:56px;border-radius:50%;
  background:var(--black);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 30px rgba(0,0,0,.25);
  transition:transform .4s var(--ease),background .3s;
}
.wa-float:hover{background:var(--gold);transform:translateY(-3px) scale(1.05);color:var(--black);}
.wa-float svg{width:26px;height:26px;}

/* ---------- Utilities ---------- */
.flex{display:flex;}
.items-center{align-items:center;}
.justify-between{justify-content:space-between;}
.gap-1{gap:1rem;}
.mt-2{margin-top:2rem;}
.mt-4{margin-top:4rem;}
.text-center{text-align:center;}
.reveal{opacity:0;transform:translateY(40px);}
.tag{
  display:inline-block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  padding:.4rem .9rem;border:1px solid var(--line);border-radius:100px;color:var(--muted);
}
.pill-gold{border-color:var(--gold);color:var(--gold-dim);background:var(--gold-soft);}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--black);color:#fff;padding:clamp(4rem,10vw,7rem) 0;
  text-align:center;
  position:relative;overflow:hidden;
}
.cta-band > .container{position:relative;z-index:1;}
.cta-band h2{max-width:18ch;margin:0 auto 1.6rem;}
.cta-band .btn-solid{background:var(--gold);color:var(--black);}
.cta-band .btn-outline{border-color:rgba(255,255,255,.35);color:#fff;}
.cta-band .btn-outline:hover{border-color:#fff;}

/* ---------- Gallery / lightbox ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;}
.gallery a{display:block;position:relative;overflow:hidden;border-radius:var(--radius);aspect-ratio:1/1;}
.gallery img{
  width:100%;height:100%;object-fit:cover;object-position:center 20%;
  transition:transform .8s var(--ease);
  filter:grayscale(.5) contrast(1.08) brightness(.85) sepia(.14);
}
.gallery a:hover img{transform:scale(1.08);}
.gallery a::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(160deg, rgba(184,154,103,.26), rgba(10,10,10,.14) 55%);
  mix-blend-mode:multiply;
}
@media(max-width:720px){.gallery{grid-template-columns:repeat(2,1fr);}}

.filters{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:3rem;}
.filter-btn{
  padding:.6rem 1.2rem;border:1px solid var(--line);border-radius:100px;font-size:.8rem;letter-spacing:.03em;
  transition:all .3s;
}
.filter-btn.is-active,.filter-btn:hover{background:var(--black);color:#fff;border-color:var(--black);}

.lightbox{
  position:fixed;inset:0;z-index:1000;background:rgba(10,10,10,.96);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .4s var(--ease);
  padding:2rem;
}
.lightbox.is-open{opacity:1;pointer-events:auto;}
.lightbox img{max-width:90vw;max-height:85vh;object-fit:contain;}
.lightbox-close{position:absolute;top:2rem;right:2rem;color:#fff;font-size:1rem;letter-spacing:.05em;}

/* ---------- Responsive base ---------- */
@media(max-width:900px){
  section{padding:4rem 0;}
  .grid-2{grid-template-columns:1fr;gap:2.4rem;}
  .footer-top{gap:2.4rem;}
}