/* Everest · PerPHect Housing — estilos globales */
:root{
  --azul:#141F3B;--cumbre:#3A5288;--horizonte:#6378AE;
  --oro:#B8921F;--oro-texto:#8A6A1E;--marfil:#F4F1EA;
  --texto:#141F3B;--suave:#5A6380;--tenue:#8A91A6;--linea:#E6E3DC;
  --max:1160px;--font:"Helvetica Neue",Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--font);color:var(--texto);background:#fff;line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
section{padding:120px 0}
.label{display:block;font-size:11px;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:var(--oro-texto);margin-bottom:20px}
.on-dark .label{color:var(--oro)}
h1,h2,h3,h4{font-weight:700;line-height:1.15;letter-spacing:-.015em}
h2{font-size:clamp(28px,3.6vw,42px);margin-bottom:20px;max-width:760px}
h3{font-size:19px;margin-bottom:8px}
.lead{font-size:clamp(17px,1.5vw,19px);color:var(--suave);max-width:640px}
.muted{color:var(--suave)}
.small{font-size:13px;color:var(--tenue)}
.rule{width:40px;height:2px;background:var(--oro);margin:28px 0}
.ivory{background:var(--marfil)}
.on-dark{background:var(--azul);color:#fff}
.on-dark .lead,.on-dark .muted{color:#B9C1D6}

/* Botones y enlaces */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:inherit;font-weight:700;font-size:14px;letter-spacing:.02em;padding:16px 28px;border-radius:2px;border:1px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn-dark{background:var(--azul);color:#fff}.btn-dark:hover{background:var(--cumbre)}
.btn-gold{background:var(--oro);color:var(--azul)}.btn-gold:hover{background:#C9A22C}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.link{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:14px;color:var(--azul);border-bottom:1px solid var(--azul);padding-bottom:4px;transition:gap .2s}
.link:hover{gap:16px}
.on-dark .link{color:#fff;border-color:#fff}
.link::after{content:"→"}

/* Header */
header{position:fixed;inset:0 0 auto;z-index:50;background:#fff;border-bottom:1px solid var(--linea);transition:background .3s,border-color .3s}
.nav{display:flex;align-items:center;justify-content:space-between;height:80px}
.brand img{height:40px;width:auto}
.brand .light{display:none}
.menu{display:flex;align-items:center;gap:34px}
.menu a{font-size:14px;color:var(--suave);transition:color .2s;position:relative}
.menu a:hover,.menu a.active{color:var(--azul)}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:var(--oro)}
.menu .btn{color:#fff;padding:12px 22px}
.menu .btn.active::after{display:none}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;align-items:center;justify-content:center}
.burger span,.burger span::before,.burger span::after{display:block;width:22px;height:2px;background:var(--azul);position:relative;transition:transform .25s,background .25s}
.burger span::before,.burger span::after{content:"";position:absolute;left:0}
.burger span::before{top:-7px}.burger span::after{top:7px}
.open .burger span{background:transparent}
.open .burger span::before{transform:translateY(7px) rotate(45deg)}
.open .burger span::after{transform:translateY(-7px) rotate(-45deg)}
/* Header transparente sobre la foto del inicio */
body.home header:not(.solid):not(.open){background:transparent;border-color:transparent}
body.home header:not(.solid):not(.open) .brand .dark{display:none}
body.home header:not(.solid):not(.open) .brand .light{display:block}
body.home header:not(.solid):not(.open) .menu a{color:rgba(255,255,255,.82)}
body.home header:not(.solid):not(.open) .menu a:hover{color:#fff}
body.home header:not(.solid):not(.open) .menu .btn{background:transparent;border-color:rgba(255,255,255,.6)}
body.home header:not(.solid):not(.open) .burger span,
body.home header:not(.solid):not(.open) .burger span::before,
body.home header:not(.solid):not(.open) .burger span::after{background:#fff}

/* Hero con montaña */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:flex-end;padding:0 0 96px;color:#fff;overflow:hidden;background:var(--azul)}
.hero-bg{position:absolute;inset:0;background:url(../img/montana.jpg) center 38%/cover no-repeat;filter:grayscale(1) contrast(1.05)}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(20,31,59,.55) 0%,rgba(20,31,59,.25) 35%,rgba(20,31,59,.82) 100%)}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:var(--cumbre);mix-blend-mode:multiply;opacity:.35}
.hero .wrap{position:relative;z-index:2;width:100%}
.hero h1{font-size:clamp(42px,7vw,88px);line-height:1.02;letter-spacing:-.025em;margin-bottom:26px;max-width:900px}
.hero p{font-size:clamp(17px,1.6vw,20px);color:rgba(255,255,255,.82);max-width:560px;margin-bottom:40px}
.hero .ctas{display:flex;flex-wrap:wrap;gap:14px}
.hero .meta{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.scroll{font-size:11px;letter-spacing:.24em;color:rgba(255,255,255,.6);writing-mode:vertical-rl;padding-bottom:6px}

/* Cabecera de página interior */
.page-head{padding:190px 0 80px;border-bottom:1px solid var(--linea)}
.page-head h1{font-size:clamp(36px,5.4vw,64px);letter-spacing:-.02em;margin-bottom:22px;max-width:900px}
.page-head.photo{position:relative;color:#fff;border:0;background:var(--azul);overflow:hidden}
.page-head.photo .hero-bg{background-position:center 30%;opacity:.45}
.page-head.photo .wrap{position:relative;z-index:1}
.page-head.photo .label{color:var(--oro)}
.page-head.photo .lead{color:#C4CBDD}

/* Cifras */
.stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--linea);margin-top:64px}
.stat{padding:36px 32px 0 0}
.stat+.stat{padding-left:32px;border-left:1px solid var(--linea)}
.stat b{display:block;font-size:clamp(40px,5vw,60px);line-height:1;letter-spacing:-.03em;margin-bottom:14px}
.stat b sup{font-size:.45em;color:var(--oro);vertical-align:top;margin-left:2px}
.stat p{color:var(--suave);font-size:15px;max-width:280px}

/* Lista numerada minimalista */
.list{border-top:1px solid var(--linea);margin-top:56px}
.item{display:grid;grid-template-columns:90px 1fr 1.4fr;gap:32px;padding:34px 0;border-bottom:1px solid var(--linea);align-items:baseline}
.item .n{font-size:13px;font-weight:700;color:var(--oro-texto);letter-spacing:.1em}
.item h3{margin:0;font-size:20px}
.item p{color:var(--suave)}
.on-dark .list,.on-dark .item{border-color:rgba(255,255,255,.14)}
.on-dark .item .n{color:var(--oro)}

/* Grids */
.split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.split.wide{grid-template-columns:.8fr 1.2fr}
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:56px}
.col h3{font-size:18px}
.col p{color:var(--suave);font-size:15px}
.col .n{display:block;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--oro-texto);margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--linea)}

/* Tarjetas de navegación (inicio) */
.explore{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--linea);margin-top:56px}
.explore a{padding:40px 32px 40px 0;border-bottom:1px solid var(--linea);display:flex;flex-direction:column;gap:12px;transition:background .25s}
.explore a+a{padding-left:32px;border-left:1px solid var(--linea)}
.explore a:hover h3{color:var(--cumbre)}
.explore .n{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--oro-texto)}
.explore h3{font-size:22px;margin:0;transition:color .2s}
.explore p{color:var(--suave);font-size:15px;flex:1}
.explore .go{font-size:14px;font-weight:700}

/* Waterfall */
.steps{display:flex;align-items:flex-end;gap:8px;height:340px;margin-top:8px}
.step{flex:1;min-width:0;padding:16px 14px;display:flex;flex-direction:column;color:#fff;position:relative;overflow-wrap:anywhere}
.step .who{position:absolute;top:-24px;left:0;font-size:10px;font-weight:700;letter-spacing:.14em;color:var(--tenue)}
.step .num{font-size:26px;font-weight:700;line-height:1;margin-bottom:8px}
.step p{font-size:13px;line-height:1.3}
.s1{height:30%;background:var(--oro);color:var(--azul)}
.s2{height:46%;background:var(--oro);color:var(--azul)}
.s3{height:62%;background:var(--azul)}
.s4{height:80%;background:var(--horizonte)}
.s5{height:98%;background:var(--cumbre)}
.s1 .who,.s2 .who,.s4 .who{color:var(--oro-texto)}
.note{border-left:2px solid var(--oro);padding:2px 0 2px 20px;margin-top:32px}
.note small{display:block;font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--oro-texto);margin-bottom:6px;text-transform:uppercase}

/* Estructuras */
.routes{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:56px;border:1px solid var(--linea)}
.route{padding:44px 40px}
.route+.route{border-left:1px solid var(--linea)}
.route small{font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--horizonte);text-transform:uppercase}
.route h3{font-size:24px;margin:10px 0 26px}
.route .nums{display:flex;gap:40px;padding-bottom:28px;border-bottom:1px solid var(--linea)}
.route .nums b{display:block;font-size:44px;line-height:1;letter-spacing:-.03em}
.route .nums span{font-size:13px;color:var(--suave)}
.route dl div{padding:16px 0;border-bottom:1px solid var(--linea)}
.route dl div:last-child{border:0;padding-bottom:0}
.route dt{font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--oro-texto);margin-bottom:4px}
.route dd{font-size:15px;color:var(--suave)}

/* Metodologías */
.mlogo{display:inline-flex;flex-direction:column;align-items:flex-start}
.mlogo .word{font-size:clamp(36px,4.6vw,54px);font-weight:700;letter-spacing:.08em;line-height:1}
.mlogo .word .g{color:var(--oro)}
.mlogo .word sup{font-size:.32em;vertical-align:top;margin-left:4px;font-weight:400}
.mlogo .tagl{font-size:13px;letter-spacing:.16em;color:var(--suave);margin-top:14px}
.mlogo .peak{width:28px;height:17px;margin:0 0 10px 3.2em}
.ciccot{display:flex;align-items:center;gap:20px}
.ciccot svg{width:76px;height:76px;flex:none}
.ciccot .bar{width:40px;height:3px;background:var(--oro);margin:12px 0 10px}
.cycle{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--linea);margin-top:48px}
.cycle div{padding:32px 28px 0 0}
.cycle div+div{padding-left:28px;border-left:1px solid var(--linea)}
.cycle .cn{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--oro-texto);display:block;margin-bottom:12px}
.cycle h4{font-size:14px;letter-spacing:.12em;margin-bottom:8px}
.cycle p{font-size:15px;color:var(--suave)}

/* Proceso */
.timeline{margin-top:56px;border-top:1px solid rgba(255,255,255,.14)}
.tl{display:grid;grid-template-columns:90px 260px 1fr;gap:32px;padding:26px 0;border-bottom:1px solid rgba(255,255,255,.14)}
.tl .n{font-size:13px;font-weight:700;color:var(--oro);letter-spacing:.1em}
.tl h3{font-size:18px;margin:0}
.tl p{color:#B9C1D6;font-size:15px}

/* Tablas */
.table{width:100%;border-collapse:collapse;font-size:15px;margin-top:8px}
.table td{padding:18px 0;border-bottom:1px solid var(--linea);vertical-align:top;color:var(--suave)}
.table td:first-child{font-weight:700;color:var(--azul);width:34%;padding-right:24px}
.table tr:first-child td{border-top:1px solid var(--linea)}

/* Principios */
.principles{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:28px 64px;margin-top:48px}
.principles li{display:flex;gap:16px;font-size:17px;line-height:1.5}
.principles li::before{content:"";flex:none;width:10px;height:10px;margin-top:8px;background:var(--oro);clip-path:polygon(50% 0,100% 100%,0 100%)}

/* Galería de proyectos */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px}
.filters button{font:inherit;font-size:13px;font-weight:700;letter-spacing:.04em;padding:10px 18px;border:1px solid var(--linea);background:#fff;color:var(--suave);cursor:pointer;border-radius:2px;transition:all .2s}
.filters button:hover{border-color:var(--azul);color:var(--azul)}
.filters button.on{background:var(--azul);border-color:var(--azul);color:#fff}
.gallery{display:grid;grid-template-columns:repeat(12,1fr);gap:12px;margin-top:32px}
.gallery figure{position:relative;overflow:hidden;cursor:zoom-in;background:var(--marfil);grid-column:span 4;aspect-ratio:4/3}
.gallery figure.big{grid-column:span 8;grid-row:span 2;aspect-ratio:auto}
.gallery figure.wide{grid-column:span 6}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.gallery figure:hover img{transform:scale(1.035)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:40px 18px 14px;font-size:13px;font-weight:500;color:#fff;background:linear-gradient(transparent,rgba(20,31,59,.7));opacity:0;transition:opacity .3s}
.gallery figure:hover figcaption{opacity:1}
.gallery figure.hide{display:none}
.teaser{display:grid;grid-template-columns:2fr 1fr;grid-template-rows:1fr 1fr;gap:12px;margin-top:56px;height:560px}
.teaser a{overflow:hidden;position:relative;background:var(--marfil)}
.teaser a:first-child{grid-row:span 2}
.teaser img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.teaser a:hover img{transform:scale(1.035)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(14,21,40,.96);display:none;align-items:center;justify-content:center;padding:60px 70px}
.lightbox.show{display:flex}
.lightbox img{max-width:100%;max-height:100%;object-fit:contain}
.lightbox .cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#B9C1D6;font-size:14px}
.lightbox button{position:absolute;background:none;border:0;color:#fff;cursor:pointer;width:56px;height:56px;font-size:30px;line-height:1;opacity:.75;transition:opacity .2s}
.lightbox button:hover{opacity:1}
.lb-close{top:14px;right:14px}
.lb-prev{left:8px;top:50%;transform:translateY(-50%)}
.lb-next{right:8px;top:50%;transform:translateY(-50%)}

/* CTA */
.cta{text-align:center}
.cta h2{margin:0 auto 18px}
.cta .lead{margin:0 auto 40px}
.cta .ctas{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* Contacto */
.cinfo{margin-top:48px;border-top:1px solid var(--linea)}
.cinfo a,.cinfo div{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;border-bottom:1px solid var(--linea);font-size:16px}
.cinfo span{font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--tenue);text-transform:uppercase}
.cinfo a:hover b{color:var(--cumbre)}
.form .field{margin-bottom:26px}
.form label{display:block;font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--suave);margin-bottom:6px}
.form input{width:100%;font:inherit;font-size:18px;padding:12px 0;border:0;border-bottom:1px solid #C9CDD8;background:transparent;color:var(--azul);border-radius:0;transition:border-color .2s}
.form input:focus{outline:none;border-color:var(--azul)}
.form input.err{border-color:#B3261E}
.form .msg{font-size:12px;color:#B3261E;margin-top:6px;display:none}
.form input.err+.msg{display:block}
.form .btn{width:100%;margin-top:10px;padding:18px}
.form .legal{font-size:12px;color:var(--tenue);margin-top:16px}
.ok{display:none;padding:20px 0}
.ok h3{font-size:26px;margin-bottom:10px}

/* Footer */
footer{background:var(--azul);color:#9AA4C0;padding:80px 0 36px;font-size:14px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.fgrid img{height:46px;width:auto;margin-bottom:22px}
.fgrid h5{color:#fff;font-size:11px;letter-spacing:.2em;text-transform:uppercase;margin-bottom:18px}
.fgrid ul{list-style:none;display:grid;gap:10px}
.fgrid a:hover{color:#fff}
.legalnote{font-size:12px;line-height:1.6;color:#6F7A98;padding-top:28px;display:flex;justify-content:space-between;gap:32px}
.legalnote p{max-width:760px}

/* WhatsApp */
.wa{position:fixed;right:24px;bottom:24px;z-index:60;display:flex;align-items:center;gap:10px;background:#25D366;color:#fff;border-radius:40px;padding:13px 20px 13px 15px;font-weight:700;font-size:14px;box-shadow:0 10px 28px rgba(0,0,0,.2);transition:transform .2s}
.wa:hover{transform:translateY(-2px)}
.wa svg{width:26px;height:26px;flex:none}

/* Animación */
.rv{opacity:0;transform:translateY(16px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* Responsive */
@media (max-width:1020px){
  .menu{position:fixed;top:80px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 32px 28px;border-bottom:1px solid var(--linea);transform:translateY(-10px);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
  .open .menu{opacity:1;transform:none;pointer-events:auto}
  .menu a{padding:16px 0;border-bottom:1px solid var(--linea);font-size:17px;color:var(--azul)}
  .menu a.active::after{display:none}
  .menu a.active{color:var(--oro-texto)}
  .menu .btn{margin-top:18px;border:0}
  .burger{display:flex}
  .split,.split.wide{grid-template-columns:minmax(0,1fr);gap:48px}
  .item{grid-template-columns:60px 1fr;gap:8px 20px}
  .item p{grid-column:2}
  .tl{grid-template-columns:60px 1fr;gap:6px 20px}
  .tl p{grid-column:2}
  .cycle{grid-template-columns:1fr 1fr}
  .cycle div:nth-child(3){padding-left:0;border-left:0}
  .cycle div{padding-bottom:28px}
}
@media (max-width:760px){
  section{padding:80px 0}
  .wrap{padding:0 20px}
  .nav{height:68px}
  .brand img{height:32px}
  .menu{top:68px;padding:8px 20px 24px}
  html{scroll-padding-top:76px}
  .hero{padding-bottom:64px}
  .hero .ctas .btn{flex:1 1 100%}
  .scroll{display:none}
  .page-head{padding:130px 0 56px}
  .stats,.explore,.cols3{grid-template-columns:1fr}
  .stat,.stat+.stat{padding:28px 0;border-left:0;border-bottom:1px solid var(--linea)}
  .explore a,.explore a+a{padding:32px 0;border-left:0}
  .cols3{gap:40px}
  .steps{height:280px;gap:5px}
  .step{padding:10px 7px}
  .step .num{font-size:20px}
  .step p{font-size:11px}
  .step .who{font-size:8px;letter-spacing:.04em}
  .routes{grid-template-columns:1fr}
  .route{padding:32px 22px}
  .route+.route{border-left:0;border-top:1px solid var(--linea)}
  .ciccot{gap:14px}.ciccot svg{width:60px;height:60px}
  .cycle{grid-template-columns:1fr}
  .cycle div,.cycle div+div{padding:24px 0;border-left:0;border-bottom:1px solid var(--linea)}
  .principles{grid-template-columns:1fr}
  .table td:first-child{width:40%}
  .gallery{grid-template-columns:1fr 1fr;gap:8px}
  .gallery figure,.gallery figure.wide{grid-column:span 1}
  .gallery figure.big{grid-column:span 2;grid-row:auto;aspect-ratio:4/3}
  .teaser{grid-template-columns:1fr 1fr;grid-template-rows:auto;height:auto}
  .teaser a{aspect-ratio:4/3}
  .teaser a:first-child{grid-column:span 2;grid-row:auto}
  .lightbox{padding:60px 8px}
  .fgrid{grid-template-columns:1fr;gap:36px}
  .legalnote{flex-direction:column}
  .wa{padding:0;width:58px;height:58px;justify-content:center;right:16px;bottom:16px}
  .wa span{display:none}.wa svg{width:30px;height:30px}
}

/* ===== Ajustes v3 ===== */
/* Botón Contacto activo: texto siempre visible */
.menu a.btn.active,.menu a.btn.active:hover{color:#fff}
@media (max-width:1020px){.menu a.btn.active{color:#fff}}

/* Redes sociales */
.social{display:flex;gap:10px;margin-top:22px}
.social a{width:40px;height:40px;border:1px solid rgba(255,255,255,.22);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;transition:background .2s,border-color .2s}
.social a:hover{background:rgba(255,255,255,.1);border-color:#fff}
.social svg{width:18px;height:18px}
.cinfo .social{margin:0;padding:0;border:0}
.cinfo .social a{color:var(--azul);border-color:var(--linea);padding:0}
.cinfo .social a:hover{background:var(--marfil);border-color:var(--azul)}

/* Miembro de */
.member{display:flex;align-items:center;gap:22px;padding:30px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.member span{font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:#9AA4C0}
.member img{height:54px;width:auto;opacity:.85;transition:opacity .2s}
.member a:hover img{opacity:1}

/* Formulario: obligatorios y comentarios */
.form abbr{color:var(--oro-texto);text-decoration:none;font-weight:700}
.form textarea{width:100%;font:inherit;font-size:17px;padding:12px 0;border:0;border-bottom:1px solid #C9CDD8;background:transparent;color:var(--azul);resize:vertical;min-height:52px;border-radius:0;transition:border-color .2s}
.form textarea:focus{outline:none;border-color:var(--azul)}

/* Cabecera con foto (metodologías) */
.page-head.photo .hero-bg{filter:grayscale(1)}

/* 404 */
.err404{align-items:center;padding:140px 0 80px}
.err404 h1{font-size:clamp(40px,6.4vw,80px)}