:root{
  --navy:#0C2A40;
  --navy-2:#081E2D;
  --teal:#1E9AA8;
  --gold:#C18C3E;
  --sand:#E7D6B7;
  --paper:#F4F1EA;
  --ink:#172632;
  --muted:#64727A;
  --line:rgba(12,42,64,.14);
  --ease:cubic-bezier(.16,1,.3,1);
  --header-h:104px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px}
body{
  margin:0;
  overflow-x:hidden;
  color:var(--ink);
  background:#fff;
  font-family:"Manrope",ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
img{display:block;max-width:100%}
a{text-decoration:none}
::selection{background:rgba(30,154,168,.22);color:var(--navy)}
.skip-link{position:fixed;left:1rem;top:1rem;z-index:999;transform:translateY(-150%);background:white;color:var(--navy);padding:.7rem 1rem;border-radius:.4rem;box-shadow:0 10px 30px rgba(0,0,0,.12)}
.skip-link:focus{transform:none}

/* Progreso */
.scroll-progress{
  position:fixed;left:0;top:0;z-index:150;height:3px;width:100%;
  transform:scaleX(var(--scroll-progress,0));transform-origin:left;
  background:linear-gradient(90deg,var(--gold),var(--teal));
  pointer-events:none;
}

/* Header: editorial, no "card-like" */
.site-header{
  position:sticky;top:0;z-index:100;
  border-bottom:1px solid transparent;
  transition:background .35s ease,border-color .35s ease,box-shadow .35s ease,color .35s ease;
}
.site-header .header-shell{
  min-height:var(--header-h);
  transition:min-height .35s var(--ease),padding .35s var(--ease);
}
.site-header.overlay{
  position:absolute;left:0;right:0;top:0;color:white;background:linear-gradient(to bottom,rgba(3,17,26,.38),transparent);
}
.site-header.overlay .brand-text,
.site-header.overlay .desktop-nav a{color:white}
.site-header.overlay .desktop-nav a::after{background:var(--sand)}
.site-header.overlay .menu-btn{border-color:rgba(255,255,255,.35);color:white}
.site-header.overlay.is-scrolled{
  position:fixed;
  color:var(--ink);
  background:rgba(255,255,255,.96);
  border-color:rgba(12,42,64,.10);
  box-shadow:0 12px 35px rgba(12,42,64,.08);
  backdrop-filter:blur(16px);
}
.site-header.overlay.is-scrolled .brand-text,
.site-header.overlay.is-scrolled .desktop-nav a{color:var(--ink)}
.site-header.overlay.is-scrolled .desktop-nav a.active{color:var(--teal)}
.site-header.overlay.is-scrolled .menu-btn{border-color:var(--line);color:var(--navy)}
.site-header:not(.overlay){
  background:rgba(255,255,255,.97);
  border-color:rgba(12,42,64,.10);
  backdrop-filter:blur(16px);
}
.site-header.is-scrolled .header-shell{min-height:78px}
.brand-logo{
  width:78px;height:78px;object-fit:contain;border-radius:14px;
  transition:width .35s var(--ease),height .35s var(--ease);
}
.site-header.is-scrolled .brand-logo{width:58px;height:58px}
.brand-text{
  font-size:1.08rem;font-weight:850;letter-spacing:-.025em;white-space:nowrap;
  transition:font-size .35s var(--ease),color .35s ease;
}
.site-header.is-scrolled .brand-text{font-size:.98rem}
.desktop-nav a{
  position:relative;color:var(--ink);font-size:.82rem;font-weight:800;letter-spacing:.01em;padding:.6rem 0;
  transition:color .25s ease;
}
.desktop-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:.2rem;height:1px;background:var(--teal);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)
}
.desktop-nav a:hover::after,.desktop-nav a.active::after{transform:scaleX(1)}
.desktop-nav a.active{color:var(--teal)}
.header-cta{
  display:inline-flex;align-items:center;gap:.55rem;border:1px solid currentColor;padding:.76rem 1rem;
  font-size:.76rem;font-weight:850;letter-spacing:.02em;transition:background .25s ease,color .25s ease,border-color .25s ease;
}
.overlay:not(.is-scrolled) .header-cta{color:white;border-color:rgba(255,255,255,.6)}
.overlay:not(.is-scrolled) .header-cta:hover{background:white;color:var(--navy)}
.site-header:not(.overlay) .header-cta,.overlay.is-scrolled .header-cta{color:var(--navy);border-color:rgba(12,42,64,.28)}
.site-header:not(.overlay) .header-cta:hover,.overlay.is-scrolled .header-cta:hover{background:var(--navy);color:white;border-color:var(--navy)}
.menu-btn{border:1px solid var(--line);padding:.7rem;background:transparent}
.mobile-menu{
  background:white;border-top:1px solid var(--line);
  box-shadow:0 16px 30px rgba(12,42,64,.08)
}
.mobile-menu a{display:flex;justify-content:space-between;padding:.9rem 0;color:var(--ink);font-weight:800;border-bottom:1px solid rgba(12,42,64,.08)}
.mobile-menu a:last-child{border-bottom:0}

/* Tipografía editorial */
.display{
  font-size:clamp(3.4rem,8vw,8.8rem);
  line-height:.88;letter-spacing:-.075em;font-weight:900;
}
.display-sm{
  font-size:clamp(2.8rem,6vw,6.4rem);
  line-height:.94;letter-spacing:-.065em;font-weight:900;
}
.section-title{
  font-size:clamp(2.15rem,4vw,4.8rem);
  line-height:.98;letter-spacing:-.055em;font-weight:900;color:var(--navy)
}
.section-kicker{
  display:inline-flex;align-items:center;gap:.7rem;
  font-size:.72rem;font-weight:900;text-transform:uppercase;letter-spacing:.22em;color:var(--teal)
}
.section-kicker::before{content:"";width:34px;height:1px;background:currentColor}
.lead{font-size:clamp(1.12rem,1.8vw,1.48rem);line-height:1.65;color:#53636D}
.body-copy{font-size:1rem;line-height:1.8;color:#5D6B73}
.arch-number{
  font-size:clamp(5.2rem,10vw,10rem);line-height:.78;font-weight:900;letter-spacing:-.08em;
  color:rgba(12,42,64,.065);user-select:none
}
.rule{height:1px;background:var(--line)}

/* HOME */
.home-hero{
  position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;background:var(--navy-2)
}
.home-hero::before{
  content:"";position:absolute;inset:-3%;
  background:
    linear-gradient(90deg,rgba(5,20,30,.82) 0%,rgba(5,20,30,.54) 45%,rgba(5,20,30,.15) 75%),
    linear-gradient(to top,rgba(5,20,30,.70),transparent 55%),
    url("../img/galeria-60-area-social-iluminada.webp") center/cover no-repeat;
  animation:heroDrift 16s ease-in-out infinite alternate;
  will-change:transform
}
@keyframes heroDrift{from{transform:scale(1.02)}to{transform:scale(1.075) translateX(-1%)}}
.home-hero .hero-content{position:relative;z-index:2;color:white;padding-top:170px;padding-bottom:8vh}
.home-hero .display{max-width:920px}
.hero-eyebrow{font-size:.74rem;text-transform:uppercase;letter-spacing:.24em;font-weight:900;color:var(--sand)}
.hero-copy{max-width:720px;margin-top:1.7rem;font-size:clamp(1.04rem,1.7vw,1.35rem);line-height:1.65;color:rgba(255,255,255,.84)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2rem}
.btn-solid,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:.7rem;min-height:48px;padding:.8rem 1.2rem;
  font-size:.78rem;font-weight:900;letter-spacing:.015em;transition:.28s var(--ease)
}
.btn-solid{background:var(--gold);color:white}
.btn-solid:hover{transform:translateY(-2px);background:#ad7b34}
.btn-line{border:1px solid rgba(255,255,255,.55);color:white}
.btn-line:hover{background:white;color:var(--navy);transform:translateY(-2px)}
.hero-index{
  position:absolute;right:clamp(1.25rem,5vw,5rem);bottom:8vh;z-index:3;display:none;align-items:flex-end;gap:1rem;color:white
}
.hero-index .line{width:1px;height:92px;background:rgba(255,255,255,.45)}
.hero-index span{writing-mode:vertical-rl;transform:rotate(180deg);font-size:.65rem;text-transform:uppercase;letter-spacing:.2em;font-weight:800;color:rgba(255,255,255,.65)}
@media(min-width:1024px){.hero-index{display:flex}}

.intro-editorial{background:var(--paper);position:relative;overflow:hidden}
.intro-editorial .image-stack{position:relative;min-height:560px}
.intro-editorial .image-main{position:absolute;right:0;top:0;width:80%;height:76%;object-fit:cover}
.intro-editorial .image-small{position:absolute;left:0;bottom:0;width:52%;height:46%;object-fit:cover;border:12px solid var(--paper)}
.intro-editorial .arch-number{position:absolute;right:-.03em;bottom:-.05em}

.specialty-row{
  display:grid;grid-template-columns:80px minmax(0,1fr);gap:1.2rem;align-items:center;
  padding:1.4rem 0;border-top:1px solid var(--line);position:relative
}
.specialty-row:last-child{border-bottom:1px solid var(--line)}
.specialty-row .n{font-size:.74rem;font-weight:900;color:var(--gold);letter-spacing:.12em}
.specialty-row h3{font-size:clamp(1.4rem,3vw,2.6rem);font-weight:900;letter-spacing:-.045em;color:var(--navy);transition:transform .3s var(--ease)}
.specialty-row p{margin-top:.35rem;color:#68767D;font-size:.92rem;line-height:1.6}
.specialty-row .arrow{position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--teal);transition:transform .3s var(--ease)}
.specialty-row:hover h3{transform:translateX(8px)}
.specialty-row:hover .arrow{transform:translate(6px,-50%)}

.feature-project{background:var(--navy);color:white}
.feature-project .section-title{color:white}
.stage-strip{display:grid;gap:1px;background:rgba(255,255,255,.12)}
.stage-card{position:relative;min-height:400px;overflow:hidden;background:var(--navy-2)}
.stage-card img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease),filter .6s ease}
.stage-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(4,17,27,.88),rgba(4,17,27,.05) 62%)}
.stage-card .stage-copy{position:absolute;z-index:2;left:1.2rem;right:1.2rem;bottom:1.2rem}
.stage-card .stage-copy span{font-size:.66rem;font-weight:900;letter-spacing:.16em;color:var(--sand);text-transform:uppercase}
.stage-card .stage-copy h3{margin-top:.35rem;font-size:1.15rem;font-weight:850}
.stage-card:hover img{transform:scale(1.045)}
@media(min-width:900px){.stage-strip{grid-template-columns:repeat(4,1fr)}.stage-card{min-height:520px}}

.cta-image{
  position:relative;min-height:580px;display:flex;align-items:center;overflow:hidden;color:white;background:var(--navy)
}
.cta-image::before{
  content:"";position:absolute;inset:0;background:
  linear-gradient(90deg,rgba(5,20,30,.86),rgba(5,20,30,.42) 60%,rgba(5,20,30,.18)),
  url("../img/galeria-21-alberca-terminada.webp") center/cover no-repeat
}
.cta-image .inner{position:relative;z-index:2}

/* Inner hero */
.inner-hero{position:relative;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line)}
.inner-hero .hero-photo{min-height:420px;height:54vh;max-height:680px;object-fit:cover;width:100%}
.inner-hero.dark{background:var(--navy);color:white}
.inner-hero.dark .section-title{color:white}
.inner-hero .photo-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,22,32,.76),rgba(6,22,32,.12))}
.inner-hero .floating-copy{position:absolute;inset:0;display:flex;align-items:flex-end}
.inner-hero .floating-copy .copy{padding-bottom:clamp(3rem,7vw,6rem);color:white}

/* Nosotros */
.manifesto{position:relative;background:white}
.manifesto-quote{
  font-size:clamp(2rem,4vw,4.2rem);font-weight:900;letter-spacing:-.055em;line-height:1.03;color:var(--navy)
}
.principle{
  display:grid;grid-template-columns:72px 1fr;gap:1rem;padding:1.5rem 0;border-top:1px solid var(--line)
}
.principle:last-child{border-bottom:1px solid var(--line)}
.principle .num{font-size:.72rem;font-weight:900;color:var(--gold);padding-top:.35rem}
.principle h3{font-size:1.25rem;font-weight:900;color:var(--navy)}
.principle p{margin-top:.3rem;color:#65737B;line-height:1.7}
.process-line{position:relative}
.process-line::before{content:"";position:absolute;left:20px;top:15px;bottom:15px;width:1px;background:rgba(255,255,255,.18)}
.process-step{position:relative;padding-left:72px;padding-bottom:2.4rem}
.process-step:last-child{padding-bottom:0}
.process-dot{
  position:absolute;left:0;top:.1rem;width:41px;height:41px;border:1px solid rgba(255,255,255,.35);
  display:grid;place-items:center;background:var(--navy);font-size:.7rem;font-weight:900;color:var(--sand);
  transition:background .4s ease,border-color .4s ease,transform .4s var(--ease)
}
.process-step.is-active .process-dot{background:var(--teal);border-color:var(--teal);transform:scale(1.06)}
.process-step h3{font-size:1.35rem;font-weight:900}
.process-step p{margin-top:.35rem;color:#B7C2C8;line-height:1.7}

/* Servicios: páginas por bloques, sin cards repetidas */
.service-nav{
  position:sticky;top:78px;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);overflow-x:auto
}
.service-nav .rail{display:flex;gap:1.6rem;min-width:max-content}
.service-nav a{position:relative;padding:1rem 0;font-size:.72rem;font-weight:900;color:#68767D;text-transform:uppercase;letter-spacing:.08em}
.service-nav a.active,.service-nav a:hover{color:var(--navy)}
.service-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.service-nav a.active::after,.service-nav a:hover::after{transform:scaleX(1)}
.service-block{position:relative;border-bottom:1px solid var(--line)}
.service-block .service-image{width:100%;height:100%;min-height:460px;object-fit:cover}
.service-block .service-copy{padding:clamp(2rem,5vw,5rem)}
.service-block .service-no{font-size:.72rem;font-weight:900;letter-spacing:.16em;color:var(--gold)}
.service-block h2{margin-top:1rem;font-size:clamp(2.3rem,5vw,5.4rem);line-height:.94;letter-spacing:-.06em;font-weight:900;color:var(--navy)}
.service-block .service-lead{margin-top:1.4rem;font-size:1.05rem;line-height:1.75;color:#56666E;max-width:650px}
.service-list{margin-top:1.8rem;display:grid;gap:.75rem}
.service-list li{display:flex;align-items:flex-start;gap:.8rem;color:#4F5F67;line-height:1.6}
.service-list li::before{content:"";margin-top:.7rem;width:26px;height:1px;background:var(--teal);flex:none}
@media(min-width:900px){
  .service-block{display:grid;grid-template-columns:1fr 1fr;min-height:620px}
  .service-block:nth-child(even) .service-media{order:2}
  .service-block:nth-child(even) .service-copy{order:1}
}

/* Galería / proyectos */
.project-hero{
  position:relative;min-height:72vh;display:flex;align-items:flex-end;color:white;background:var(--navy);overflow:hidden
}
.project-hero::before{
  content:"";position:absolute;inset:0;background:
    linear-gradient(to top,rgba(5,20,30,.88),rgba(5,20,30,.18) 70%),
    url("../img/galeria-66-acceso-campestre-terminado.webp") center/cover no-repeat
}
.project-hero .inner{position:relative;z-index:2;padding-bottom:clamp(3rem,7vw,6rem)}
.project-feature{
  display:grid;gap:1px;background:var(--line);border:1px solid var(--line)
}
.project-feature figure{position:relative;min-height:340px;overflow:hidden;background:#e7e7e7}
.project-feature img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.project-feature figure:hover img{transform:scale(1.04)}
.project-feature figcaption{position:absolute;left:1rem;bottom:1rem;background:rgba(8,30,45,.86);color:white;padding:.55rem .75rem;font-size:.72rem;font-weight:850;letter-spacing:.04em}
@media(min-width:900px){.project-feature{grid-template-columns:repeat(4,1fr)}.project-feature figure{min-height:460px}}
.before-after-frame{position:relative;overflow:hidden;aspect-ratio:16/10;background:#ddd}
.before-after-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity .55s var(--ease),transform .85s var(--ease)}
.before-after-frame img[data-ba="after"]{opacity:0;transform:scale(1.025)}
[data-before-after].show-after .before-after-frame img[data-ba="after"]{opacity:1;transform:scale(1)}
[data-before-after].show-after .before-after-frame img[data-ba="before"]{opacity:0;transform:scale(1.025)}
.ba-buttons{display:inline-flex;border:1px solid var(--line)}
.ba-buttons button{padding:.7rem 1rem;font-size:.72rem;font-weight:900;background:white;color:var(--ink);transition:.25s}
.ba-buttons button[aria-pressed="true"]{background:var(--navy);color:white}
.gallery-filters{display:flex;flex-wrap:wrap;gap:.5rem}
.gallery-filters button{
  border:1px solid var(--line);background:white;color:#5C6B73;padding:.65rem .9rem;font-size:.72rem;font-weight:850;
  transition:.25s ease
}
.gallery-filters button[aria-pressed="true"],.gallery-filters button:hover{background:var(--navy);border-color:var(--navy);color:white}
.gallery-masonry{columns:1;column-gap:12px}
.gallery-item{width:100%;break-inside:avoid;margin:0 0 12px;position:relative;overflow:hidden;background:#e9edef;cursor:zoom-in}
.gallery-item img{width:100%;height:auto;transition:transform .7s var(--ease),filter .35s ease}
.gallery-item::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(5,20,30,.72),transparent 48%);opacity:.72;transition:opacity .35s ease}
.gallery-item .caption{position:absolute;z-index:2;left:1rem;right:1rem;bottom:.9rem;color:white;font-size:.72rem;font-weight:850;letter-spacing:.02em}
.gallery-item:hover img{transform:scale(1.035)}
.gallery-item:hover::after{opacity:.95}
.gallery-item[hidden]{display:none!important}
@media(min-width:640px){.gallery-masonry{columns:2}}
@media(min-width:1024px){.gallery-masonry{columns:3}}

[data-lightbox]{
  position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;padding:1rem;
  background:rgba(4,15,23,.94);opacity:0;transition:opacity .22s ease
}
[data-lightbox].flex{display:flex}
[data-lightbox].is-open{opacity:1}
[data-lightbox] figure{max-width:min(1200px,92vw);max-height:90vh;transform:translateY(10px) scale(.98);transition:.3s var(--ease)}
[data-lightbox].is-open figure{transform:none}
[data-lightbox-image]{max-height:80vh;width:auto;max-width:100%;object-fit:contain}
.lightbox-caption{color:white;margin-top:.75rem;font-size:.84rem}
.lightbox-control{
  position:absolute;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);color:white;
  width:46px;height:46px;display:grid;place-items:center;font-size:1.2rem;transition:.25s
}
.lightbox-control:hover{background:white;color:var(--navy)}
.lightbox-close{right:1rem;top:1rem}
.lightbox-prev{left:1rem;top:50%}
.lightbox-next{right:1rem;top:50%}

/* Contacto */
.contact-hero{
  position:relative;background:var(--navy);color:white;overflow:hidden
}
.contact-hero .image{min-height:520px;width:100%;height:70vh;max-height:760px;object-fit:cover}
.contact-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,20,30,.90),rgba(5,20,30,.44) 55%,rgba(5,20,30,.12))}
.contact-hero .copy{position:absolute;z-index:2;inset:0;display:flex;align-items:flex-end;padding-bottom:clamp(3rem,7vw,6rem)}
.contact-card{border-top:1px solid var(--line);padding:1.4rem 0}
.contact-card:last-child{border-bottom:1px solid var(--line)}
.contact-card .label{font-size:.68rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.contact-card a,.contact-card p{margin-top:.45rem;font-size:1.05rem;font-weight:800;color:var(--navy)}
.form-grid{display:grid;gap:1rem}
.form-field label{display:block;margin-bottom:.45rem;font-size:.68rem;font-weight:900;text-transform:uppercase;letter-spacing:.12em;color:#65737B}
.form-field input,.form-field select,.form-field textarea{
  width:100%;border:0;border-bottom:1px solid rgba(12,42,64,.28);background:transparent;padding:.9rem 0;
  color:var(--ink);font:inherit;outline:none;transition:border-color .2s ease
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--teal)}
.form-field textarea{min-height:140px;resize:vertical}
.submit-btn{border:0;background:var(--navy);color:white;padding:1rem 1.3rem;font-weight:900;font-size:.78rem;letter-spacing:.02em;cursor:pointer;transition:.25s var(--ease)}
.submit-btn:hover{background:var(--teal);transform:translateY(-2px)}

/* Footer */
.site-footer{background:var(--navy-2);color:white}
.site-footer .footer-rule{height:1px;background:rgba(255,255,255,.12)}
.site-footer a{color:#B9C5CA;transition:color .2s}
.site-footer a:hover{color:white}
.site-footer .footer-label{font-size:.67rem;font-weight:900;letter-spacing:.18em;text-transform:uppercase;color:var(--sand)}

/* Movimiento */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .75s var(--ease),transform .75s var(--ease);transition-delay:var(--delay,0ms)}
[data-reveal="left"]{transform:translateX(-34px)}
[data-reveal="right"]{transform:translateX(34px)}
[data-reveal].is-visible{opacity:1;transform:none}
[data-parallax]{will-change:transform;transform:translateY(var(--parallax-y,0px)) scale(1.03)}
.gallery-item.gallery-hiding{opacity:0;transform:scale(.98);transition:.18s ease}
.gallery-item.gallery-enter{animation:galleryIn .45s var(--ease) both}
@keyframes galleryIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

@media(max-width:1023px){
  :root{--header-h:88px}
  .brand-logo{width:66px;height:66px}
  .brand-text{font-size:.95rem}
  .home-hero .hero-content{padding-top:135px}
}
@media(max-width:639px){
  .display{font-size:clamp(3rem,17vw,5.5rem)}
  .home-hero{min-height:92svh}
  .brand-logo{width:58px;height:58px}
  .brand-text{font-size:.82rem}
  .specialty-row{grid-template-columns:50px 1fr;padding:1.25rem 0;padding-right:2.2rem}
  .intro-editorial .image-stack{min-height:410px}
  .stage-card{min-height:360px}
  .contact-hero .image{height:62vh;min-height:480px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1!important;transform:none!important}
  [data-parallax]{transform:none!important}
}