/* Estudio Vértiz — arquitectura editorial de galería, la obra manda.
   Patrón técnico (nav, hamburguesa, reveal) tomado de demos/lumen. Diseño y paleta propios. */
:root{
  --hormigon:#1C1C1A; --hormigon-70:#4A4A46; --humo:#8A8A83;
  --cal:#F2F0EB; --blanco:#FFFFFF;
  --ocre:#B4622C;
  --linea:#DCD8D0;
  --f-display:"Space Grotesk",system-ui,sans-serif;
  --f-body:"Manrope",system-ui,sans-serif;
  --ease-out:cubic-bezier(0.23,1,0.32,1);
  --ease-in-out:cubic-bezier(0.77,0,0.175,1);
  --motion-fast:160ms; --motion-base:250ms; --motion-reveal:600ms;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--cal);color:var(--hormigon);font-family:var(--f-body);font-size:16.5px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--hormigon);color:var(--cal)}
:focus-visible{outline:2px solid var(--ocre);outline-offset:3px;border-radius:2px}
svg{display:block}

/* ── Nav ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:24px clamp(20px,5vw,72px);transition:background .3s var(--ease-out),box-shadow .3s ease,padding .3s var(--ease-out)}
.nav.scrolled{background:rgba(242,240,235,.94);backdrop-filter:blur(10px);box-shadow:0 1px 0 var(--linea);padding-top:16px;padding-bottom:16px}
.nav__brand{font-family:var(--f-display);font-weight:600;font-size:18px;letter-spacing:.18em;text-transform:uppercase}
.nav__brand span{color:var(--ocre)}
.nav__links{display:flex;gap:36px;font-size:14px;font-weight:500;color:var(--hormigon-70);letter-spacing:.02em}
.nav__links a{position:relative;transition:color .2s ease}
.nav__links a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:1px;background:var(--ocre);transition:right .3s var(--ease-out)}
.nav__links a:hover,.nav__links a[aria-current]{color:var(--hormigon)}
.nav__links a:hover::after,.nav__links a[aria-current]::after{right:0}
.nav__cta{border:1.5px solid var(--hormigon);color:var(--hormigon);padding:11px 26px;font-size:14px;font-weight:600;letter-spacing:.03em;transition:background .25s ease,color .25s ease,transform .16s var(--ease-out)}
.nav__cta:hover{background:var(--hormigon);color:var(--cal)}
.nav__cta:active{transform:scale(.97)}
@media(max-width:860px){.nav__links{display:none}}

/* ── Nav mobile (hamburguesa) ── */
.nav__burger{display:none;position:relative;width:34px;height:34px;border:0;background:none;padding:0;cursor:pointer;z-index:51}
.nav__burger span{position:absolute;left:5px;right:5px;height:2px;background:var(--hormigon);transition:transform .35s var(--ease-out),opacity .2s ease,top .35s var(--ease-out)}
.nav__burger span:nth-child(1){top:12px}
.nav__burger span:nth-child(2){top:17px}
.nav__burger span:nth-child(3){top:22px}
.nav__burger[aria-expanded="true"] span:nth-child(1){top:17px;transform:rotate(45deg)}
.nav__burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__burger[aria-expanded="true"] span:nth-child(3){top:17px;transform:rotate(-45deg)}
.nav-mobile{position:fixed;inset:0;z-index:49;display:none;align-items:center;justify-content:center;background:rgba(242,240,235,.98);backdrop-filter:blur(6px);opacity:0;pointer-events:none;transition:opacity .35s var(--ease-out)}
.nav-mobile.open{opacity:1;pointer-events:auto}
.nav-mobile__links{display:flex;flex-direction:column;align-items:center;gap:26px}
.nav-mobile__links a{font-family:var(--f-display);font-size:clamp(24px,6.5vw,30px);font-weight:600;letter-spacing:.02em;color:var(--hormigon);opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease-out),transform .4s var(--ease-out)}
.nav-mobile__links a[aria-current]{color:var(--ocre)}
.nav-mobile.open .nav-mobile__links a:nth-child(1){transition-delay:.08s}
.nav-mobile.open .nav-mobile__links a:nth-child(2){transition-delay:.15s}
.nav-mobile.open .nav-mobile__links a:nth-child(3){transition-delay:.22s}
.nav-mobile.open .nav-mobile__links a:nth-child(4){transition-delay:.29s}
.nav-mobile.open .nav-mobile__links a{opacity:1;transform:translateY(0)}
.nav-mobile__cta{margin-top:10px;border:1.5px solid var(--hormigon);background:var(--hormigon);color:var(--cal)!important;padding:14px 34px;font-size:15px!important;font-weight:600}
@media(max-width:860px){
  .nav__cta{display:none}
  .nav__burger{display:block}
  .nav-mobile{display:flex}
}
@media(prefers-reduced-motion:reduce){
  .nav__burger span,.nav-mobile,.nav-mobile__links a{transition:none!important}
  .nav-mobile.open .nav-mobile__links a{opacity:1;transform:none}
}

/* ── Botones ── */
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--hormigon);color:var(--cal);font-weight:600;font-size:15px;letter-spacing:.02em;padding:15px 32px;transition:background .25s ease,transform .16s var(--ease-out)}
.btn:hover{background:var(--ocre);transform:translateY(-1px)}
.btn:active{transform:scale(.97)}
.btn--outline{background:transparent;color:var(--hormigon);border:1.5px solid var(--hormigon)}
.btn--outline:hover{background:var(--hormigon);color:var(--cal)}
.link{font-weight:600;font-size:15px;color:var(--hormigon);border-bottom:1px solid var(--hormigon);padding-bottom:3px;transition:opacity .2s ease}
.link:hover{opacity:.65}

/* ── Secciones ── */
section{padding:clamp(72px,10vw,130px) clamp(20px,5vw,72px)}
.wrap{max-width:1180px;margin:0 auto}
.kicker{display:inline-block;font-family:var(--f-display);font-size:12.5px;letter-spacing:.28em;text-transform:uppercase;font-weight:600;color:var(--ocre);margin-bottom:18px}
.titulo{font-family:var(--f-display);font-weight:600;font-size:clamp(28px,3.6vw,44px);line-height:1.12;letter-spacing:-.015em}
.titulo em{font-style:normal;color:var(--ocre)}
.lead{color:var(--hormigon-70);margin-top:16px;max-width:56ch;font-size:17px}
.page-head{padding:clamp(130px,17vh,180px) clamp(20px,5vw,72px) clamp(30px,4vw,54px);max-width:1180px;margin:0 auto}
.page-head .titulo{font-size:clamp(34px,5vw,58px)}

/* ── Hero editorial, asimétrico — PROHIBIDO slider/panel de búsqueda ── */
.hero{position:relative;min-height:100dvh;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:clamp(24px,4vw,64px);padding:clamp(96px,11vh,128px) clamp(20px,5vw,72px) clamp(56px,8vh,88px)}
.hero__texto{padding-bottom:0}
.hero__eyebrow{font-family:var(--f-display);font-size:13px;letter-spacing:.3em;text-transform:uppercase;color:var(--ocre);font-weight:600;margin-bottom:24px}
.hero h1{font-family:var(--f-display);font-weight:600;font-size:clamp(40px,6vw,84px);line-height:1.04;letter-spacing:-.02em;max-width:14ch}
.hero__mask{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.hero__mask>span{display:block;transform:translateY(112%);animation:lineUp .9s var(--ease-out) both}
.hero__mask:nth-child(1)>span{animation-delay:.15s}
.hero__mask:nth-child(2)>span{animation-delay:.28s}
@keyframes lineUp{to{transform:translateY(0)}}
.hero__sub{color:var(--hormigon-70);font-size:18px;max-width:42ch;margin:28px 0 36px;animation:riseIn .8s var(--ease-out) .55s both}
@keyframes riseIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hero__acciones{display:flex;align-items:center;gap:24px;flex-wrap:wrap;animation:riseIn .8s var(--ease-out) .7s both}
.hero__confianza{margin-top:44px;padding-top:22px;border-top:1px solid var(--linea);font-size:13.5px;color:var(--hormigon-70);letter-spacing:.01em;animation:riseIn .8s var(--ease-out) .85s both}
.hero__asset{position:relative;overflow:hidden;aspect-ratio:3/4;max-height:min(72vh,640px);animation:riseIn 1s var(--ease-out) .3s both}
.hero__asset img{width:100%;height:100%;object-fit:cover;filter:contrast(1.03) saturate(.96)}
.hero__asset::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ocre);width:0;animation:lineGrow 1s var(--ease-out) 1.1s both}
@keyframes lineGrow{to{width:100%}}
@media(max-width:960px){
  .hero{grid-template-columns:1fr;align-items:start}
  .hero__asset{order:-1;aspect-ratio:4/3}
}

/* ── Tratamiento de fotos: b/n → color en hover, editorial ── */
@media(hover:hover) and (pointer:fine){
  .foto-trata:hover img{filter:contrast(1.06) saturate(1)}
}

/* ── Obras — grilla asimétrica, PROHIBIDA fila de 3 iguales ──
   Nota técnica: NO usar grid-row:span N sobre grid-auto-rows chico + gap.
   El row-gap se aplica entre CADA fila implícita, así que un span de 30
   filas de 14px con gap:20px da 30*14 + 29*20 = 1000px reales, no ~420px
   — infla la altura y descuadra el encuadre de la foto. En su lugar,
   cada variante fija su propio aspect-ratio sobre .obra__foto y el alto
   de fila sale del contenido (auto), sin span de filas. */
.obras__head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:48px}
.obras__grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.obra{position:relative;grid-column:span 6}
.obra__foto{position:relative;overflow:hidden;aspect-ratio:4/3}
/* El encuadre se baja a propósito: con `center` el recorte de las fotos caía sobre el
   tejado y el cielo, y una card de arquitectura que muestra teja no comunica nada.
   Con 68% entra la fachada y el volumen de la casa. */
.obra__foto img{width:100%;height:100%;object-fit:cover;object-position:center 68%;filter:contrast(1.03) saturate(.96);transition:transform .7s var(--ease-out),filter .45s ease}
@media(hover:hover) and (pointer:fine){.obra:hover .obra__foto img{transform:scale(1.035)}}
.obra__ficha{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding-top:16px;border-top:1px solid var(--linea);margin-top:16px}
.obra__nombre{font-family:var(--f-display);font-weight:600;font-size:20px;letter-spacing:-.01em}
.obra__ubicacion{color:var(--humo);font-size:13.5px;margin-top:4px}
.obra__meta{text-align:right;font-size:13px;color:var(--hormigon-70);white-space:nowrap}
.obra__meta b{display:block;color:var(--hormigon);font-family:var(--f-display);font-size:14px;font-weight:600}
.obra__estado{display:inline-block;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;color:var(--ocre);margin-top:6px}
.obra--grande{grid-column:span 4}
.obra--grande .obra__foto{aspect-ratio:4/3}
.obra--chica{grid-column:span 2}
.obra--chica .obra__foto{aspect-ratio:3/4}
.obra--media{grid-column:span 3}
.obra--media .obra__foto{aspect-ratio:4/3}
.obra--ancha{grid-column:span 6}
.obra--ancha .obra__foto{aspect-ratio:21/9}
@media(max-width:960px){
  .obras__grid{grid-template-columns:1fr}
  .obra--grande,.obra--chica,.obra--media,.obra--ancha{grid-column:1}
  .obra--grande .obra__foto,.obra--chica .obra__foto,.obra--media .obra__foto,.obra--ancha .obra__foto{aspect-ratio:4/3}
}

/* ── Filtro de obras (página obras/) ── */
.filtro{display:flex;gap:10px;flex-wrap:wrap;margin:32px 0 48px}
.filtro__btn{font-family:var(--f-display);font-size:13.5px;font-weight:600;letter-spacing:.03em;padding:10px 20px;border:1.5px solid var(--linea);color:var(--hormigon-70);background:transparent;cursor:pointer;transition:border-color .2s ease,color .2s ease,background .2s ease}
.filtro__btn:hover{border-color:var(--hormigon)}
.filtro__btn[aria-pressed="true"]{background:var(--hormigon);color:var(--cal);border-color:var(--hormigon)}
.obra[hidden]{display:none}

/* ── Problema (3 líneas con divisores, NO cards) ── */
.problema{background:var(--hormigon);color:var(--cal)}
.problema .kicker{color:#D99A6C}
.problema .titulo{color:var(--blanco);max-width:20ch}
.problema .lead{color:#C9C7C2}
.problema__lista{margin-top:52px;border-top:1px solid rgba(255,255,255,.18)}
.problema__item{display:flex;align-items:baseline;gap:24px;padding:26px 0;border-bottom:1px solid rgba(255,255,255,.18);font-size:18px;font-family:var(--f-display);font-weight:500;letter-spacing:-.005em}
.problema__n{font-family:var(--f-display);font-weight:300;font-size:15px;color:#D99A6C;white-space:nowrap}

/* ── Cómo trabajamos (3 pasos) ── */
.plan__pasos{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(28px,4vw,56px);margin-top:56px}
.plan__paso{border-top:1px solid var(--linea);padding-top:26px}
.plan__n{font-family:var(--f-display);font-weight:300;font-size:52px;color:var(--ocre);line-height:1;display:block;margin-bottom:16px}
.plan__paso b{display:block;font-family:var(--f-display);font-weight:600;font-size:19px;margin-bottom:10px}
.plan__paso p{color:var(--hormigon-70);font-size:15.5px}
.plan__compromiso{margin-top:56px;padding-top:28px;border-top:1px solid var(--linea);display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.plan__compromiso li{font-size:14.5px;color:var(--hormigon-70);display:flex;gap:10px;align-items:flex-start}
.plan__compromiso svg{flex:none;width:18px;height:18px;color:var(--ocre);margin-top:2px}
@media(max-width:860px){.plan__pasos,.plan__compromiso{grid-template-columns:1fr}}

/* ── Estudio ── */
.estudio-sec{border-top:1px solid var(--linea)}
.estudio-sec .titulo{max-width:22ch}

/* ── Stakes breve ── */
.stakes{background:var(--cal);border-top:1px solid var(--linea);border-bottom:1px solid var(--linea);text-align:center}
.stakes p{font-family:var(--f-display);font-weight:400;font-size:clamp(22px,2.8vw,32px);line-height:1.4;letter-spacing:-.01em;max-width:26ch;margin:0 auto}
.stakes em{font-style:normal;color:var(--ocre)}

/* ── FAQ ── */
.faq__lista{max-width:760px;margin:40px auto 0}
.faq__lista details{border-bottom:1px solid var(--linea);padding:4px 0}
.faq__lista summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:var(--f-display);font-weight:600;font-size:16.5px;padding:18px 0}
.faq__lista summary::-webkit-details-marker{display:none}
.faq__lista summary::after{content:"+";font-size:20px;color:var(--ocre);transition:transform .25s var(--ease-out)}
.faq__lista details[open] summary::after{transform:rotate(45deg)}
.faq__lista details p{color:var(--hormigon-70);padding:0 0 18px;max-width:62ch;font-size:15.5px}

/* ── CTA final + footer ── */
.final{text-align:center;background:var(--hormigon);color:var(--cal)}
.final .titulo{color:var(--blanco)}
.final p{color:#C9C7C2;margin:16px auto 32px;max-width:44ch}
.final .btn{background:var(--ocre)}
.final .btn:hover{background:#c97640}
.footer{padding:34px clamp(20px,5vw,72px);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--hormigon-70);border-top:1px solid var(--linea)}
.footer a:hover{color:var(--ocre)}
.footer__legal{width:100%;font-size:11.5px;color:var(--humo);margin-top:8px}

/* ── WhatsApp FAB ── */
/* En mobile los dos CTA del hero quedaban en la misma línea y el de la derecha caía
   justo debajo del FAB, que lo tapaba en el primer viewport. Apilados no se pisan. */
@media(max-width:560px){
  .hero__acciones{flex-direction:column;align-items:flex-start;gap:18px}
}
.fab{position:fixed;right:22px;bottom:22px;z-index:40;width:56px;height:56px;border-radius:50%;background:var(--hormigon);color:var(--cal);display:grid;place-items:center;box-shadow:0 12px 28px -12px rgba(28,28,26,.5);transition:transform .16s var(--ease-out),background .25s ease}
.fab:hover{background:var(--ocre);transform:translateY(-2px)}
.fab:active{transform:scale(.97)}
.fab svg{width:26px;height:26px}

/* ── Estudio: equipo + bloques ── */
.equipo__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,40px);margin-top:48px}
.persona{border-top:1px solid var(--linea);padding-top:20px}
.persona__nombre{font-family:var(--f-display);font-weight:600;font-size:18px}
.persona__rol{color:var(--ocre);font-size:13.5px;letter-spacing:.03em;margin-top:4px}
.persona__bio{color:var(--hormigon-70);font-size:14.5px;margin-top:12px}
.nohacemos{margin-top:22px}
.nohacemos li{display:flex;gap:12px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--linea);font-size:15.5px;color:var(--hormigon-70)}
.nohacemos svg{flex:none;width:18px;height:18px;color:var(--humo);margin-top:2px}
@media(max-width:860px){.equipo__grid{grid-template-columns:1fr}}

/* ── Contacto: formulario visual (demo) ── */
.contacto__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:start}
.form-demo{display:flex;flex-direction:column;gap:18px}
.form-demo label{font-size:13.5px;font-weight:600;letter-spacing:.02em;color:var(--hormigon-70);display:block;margin-bottom:8px}
.form-demo input,.form-demo select,.form-demo textarea{width:100%;border:1.5px solid var(--linea);background:var(--blanco);padding:14px 16px;font-family:var(--f-body);font-size:15px;color:var(--hormigon);transition:border-color .2s ease}
.form-demo input:focus,.form-demo select:focus,.form-demo textarea:focus{border-color:var(--hormigon);outline:none}
.form-demo textarea{resize:vertical;min-height:110px}
.contacto__datos{border-top:1px solid var(--linea);padding-top:24px}
.contacto__dato{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.contacto__dato svg{flex:none;width:20px;height:20px;color:var(--ocre);margin-top:2px}
.contacto__dato b{display:block;font-family:var(--f-display);font-size:15px;font-weight:600}
.contacto__dato span{color:var(--hormigon-70);font-size:14.5px}
@media(max-width:860px){.contacto__grid{grid-template-columns:1fr}}

/* ── Reveals ── */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease-out),transform .6s var(--ease-out);transition-delay:var(--d,0ms)}
.reveal.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  .hero__mask>span{animation:none;transform:none}
  .hero__eyebrow,.hero__sub,.hero__acciones,.hero__confianza,.hero__asset{animation:none;opacity:1}
  .hero__asset::after{animation:none;width:100%}
  .reveal{transform:none;transition:opacity .3s ease}
  html{scroll-behavior:auto}
}