/* ==========================================================================
   TATASI SpA — Inmobiliaria y Constructora
   Sistema de diseño · base clara + bloques oscuros con acento brass
   ========================================================================== */

/* ---------- Tokens ---------- */
:root{
  --ink:#101922;
  --ink-2:#18242F;
  --ink-3:#26343F;

  --accent:#B08D57;
  --accent-deep:#8A6A3B;
  --accent-light:#D3B57F;

  --base:#FFFFFF;
  --base-2:#F6F5F2;
  --base-3:#EDEBE5;
  --line:#E3E0D9;
  --line-dark:rgba(255,255,255,.14);

  --text:#1E2A34;
  --muted:#5C6771;
  --muted-dark:rgba(255,255,255,.72);

  --container:1250px;
  --gap:28px;

  --r-sm:4px;
  --r:8px;
  --r-lg:14px;

  --sh-sm:0 1px 2px rgba(16,25,34,.06);
  --sh:0 10px 30px rgba(16,25,34,.08);
  --sh-lg:0 24px 60px rgba(16,25,34,.14);

  --font-title:'Geist','Geist Fallback',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-body:'Geist','Geist Fallback',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-serif:'Lora',Georgia,'Times New Roman',serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:82px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.7;
  color:var(--text);
  background:var(--base);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4,h5{
  font-family:var(--font-title);
  color:var(--ink);
  margin:0 0 .5em;
  line-height:1.15;
  letter-spacing:-.02em;
  font-weight:700;
}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.section{padding-block:clamp(64px,7vw,104px)}
.section--tight{padding-block:clamp(48px,5vw,72px)}
.section--alt{background:var(--base-2)}
.section--dark{background:var(--ink);color:var(--muted-dark)}
.section--dark p{color:var(--muted-dark)}

/* ---------- Texto claro sobre fondo oscuro / imagen (crítico) ---------- */
.hero h1,.hero h2,.hero h3,.hero h4,
.page-hero h1,.page-hero h2,.page-hero h3,.page-hero h4,
.cta h1,.cta h2,.cta h3,.cta h4,
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4,
.site-footer h1,.site-footer h2,.site-footer h3,.site-footer h4,
.quote h1,.quote h2,.quote h3,.quote h4{color:#fff}
.hero,.page-hero,.cta,.quote{color:rgba(255,255,255,.82)}

/* ---------- Eyebrow ---------- */
.eyebrow{
  display:block;
  font-family:var(--font-title);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.19em;
  text-transform:uppercase;
  color:var(--accent-deep);
  margin:0 0 7px;
}
.hero .eyebrow,.page-hero .eyebrow,.cta .eyebrow,
.section--dark .eyebrow,.site-footer .eyebrow,.quote .eyebrow{color:var(--accent-light)}

/* ---------- Títulos ---------- */
.h-xl{font-size:clamp(2.1rem,4.4vw,3.35rem)}
.h-lg{font-size:clamp(1.75rem,3.1vw,2.5rem)}
.h-md{font-size:clamp(1.3rem,2vw,1.6rem)}
.h-sm{font-size:1.06rem;font-weight:600;letter-spacing:-.01em}
.hero h1,.page-hero h1{margin-top:15px}
.lead{font-size:1.08rem;color:var(--muted);max-width:62ch}
.section--dark .lead,.hero .lead,.page-hero .lead,.cta .lead{color:rgba(255,255,255,.78)}
em.mark{font-style:normal;color:var(--accent-light)}
.section-head{max-width:70ch;margin-bottom:clamp(32px,4vw,52px)}
.section-head--center{margin-inline:auto;text-align:center}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;
  font-family:var(--font-title);font-size:.92rem;font-weight:600;letter-spacing:.01em;
  border-radius:var(--r);border:1px solid transparent;
  cursor:pointer;transition:all .25s var(--ease);
}
.btn--primary{background:var(--accent-deep);color:#fff;border-color:var(--accent-deep)}
.btn--primary:hover{background:#75592F;border-color:#75592F;transform:translateY(-2px);box-shadow:0 10px 22px rgba(138,106,59,.3)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.hero .btn--ghost,.page-hero .btn--ghost,.cta .btn--ghost,.section--dark .btn--ghost{
  color:#fff;border-color:rgba(255,255,255,.4);
}
.hero .btn--ghost:hover,.page-hero .btn--ghost:hover,.cta .btn--ghost:hover,.section--dark .btn--ghost:hover{
  border-color:#fff;background:rgba(255,255,255,.08);
}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:var(--header-h);
  display:flex;align-items:center;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),height .3s var(--ease);
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:block;flex:none}
.brand img{height:46px;width:auto;transition:height .3s var(--ease)}
.brand .logo-claro{display:none}
.brand .logo-oscuro{display:block}
.site-header.is-scrolled{box-shadow:0 8px 28px rgba(16,25,34,.07);height:70px}
.site-header.is-scrolled .brand img{height:40px}

.nav{display:flex;align-items:center;gap:30px}
.nav-list{display:flex;align-items:center;gap:28px}
.nav-list a{
  position:relative;font-family:var(--font-title);font-size:.92rem;font-weight:500;
  color:var(--ink);transition:color .2s var(--ease);
}
.nav-list a:hover{color:var(--accent-deep)}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-7px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav-list a:hover::after,.nav-list a.is-active::after{transform:scaleX(1)}
.nav-list a.is-active{color:var(--accent-deep)}
.nav-cta{flex:none}
.nav .btn{padding:11px 20px;font-size:.87rem}
.nav-cta--movil{display:none}

.burger{
  display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:all .28s var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-backdrop{
  position:fixed;inset:0;z-index:70;background:rgba(16,25,34,.55);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.nav-backdrop.is-open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:min(88vh,760px);
  display:flex;align-items:center;
  padding-top:48px;padding-bottom:64px;margin-top:var(--header-h);
  background:var(--ink);overflow:hidden;
}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,25,34,.93) 0%,rgba(16,25,34,.82) 42%,rgba(16,25,34,.42) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-inner{max-width:660px}
.hero .lead{max-width:52ch;font-size:1.12rem}

/* franja de datos bajo el hero */
.hero-facts{position:relative;z-index:2;border-top:1px solid var(--line-dark);margin-top:clamp(40px,5vw,64px);padding-top:26px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.hero-facts li strong{display:block;font-family:var(--font-title);font-size:1.5rem;font-weight:700;color:#fff;letter-spacing:-.02em}
.hero-facts li span{display:block;font-size:.82rem;color:rgba(255,255,255,.62);letter-spacing:.02em}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;background:var(--ink);overflow:hidden;
  margin-top:var(--header-h);
  padding-top:clamp(56px,6vw,80px);padding-bottom:clamp(56px,6vw,84px);
}
.page-hero-bg{position:absolute;inset:0}
.page-hero-bg img{width:100%;height:100%;object-fit:cover}
.page-hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(95deg,rgba(16,25,34,.92) 0%,rgba(16,25,34,.78) 55%,rgba(16,25,34,.5) 100%)}
.page-hero .container{position:relative;z-index:2}
.page-hero-inner{max-width:640px}
.page-hero h1{font-size:clamp(1.95rem,3.8vw,2.9rem)}

/* ---------- Grillas ---------- */
.grid{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ---------- Tarjeta de servicio ---------- */
.card{
  background:var(--base);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 28px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  display:flex;flex-direction:column;
}
.section--alt .card{background:#fff}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:#D6D1C6}
.card__icon{
  width:52px;height:52px;flex:none;border-radius:var(--r);
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(176,141,87,.12);color:var(--accent-deep);margin-bottom:20px;
}
.card__icon svg{width:26px;height:26px}
.card h3{margin-bottom:.45em}
.card p{color:var(--muted);font-size:.95rem}
.card__num{
  font-family:var(--font-title);font-size:.78rem;font-weight:600;letter-spacing:.16em;
  color:var(--accent-deep);margin-bottom:14px;display:block;
}
.card--media{padding:0;overflow:hidden}
.card--media .card__img{aspect-ratio:4/3;overflow:hidden;background:var(--base-3)}
.card--media .card__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card--media:hover .card__img img{transform:scale(1.05)}
.card--media .card__body{padding:26px 26px 30px}

.section--dark .card{background:var(--ink-2);border-color:var(--line-dark)}
.section--dark .card:hover{border-color:rgba(255,255,255,.28)}
.section--dark .card p{color:var(--muted-dark)}
.section--dark .card__icon{background:rgba(211,181,127,.14);color:var(--accent-light)}

/* ---------- Bloque media + texto ---------- */
.media-row{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(32px,5vw,68px);align-items:center}
.media-row--rev .media-row__media{order:2}
.media-row__media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;background:var(--base-3)}
.media-row__media img{width:100%;height:100%;object-fit:cover}
.media-row__body{padding-block:4px}

/* lista con check */
.list-check li{position:relative;padding-left:30px;margin-bottom:12px;color:var(--muted);font-size:.96rem}
.list-check li:last-child{margin-bottom:0}
.list-check li::before{
  content:"";position:absolute;left:0;top:.5em;width:16px;height:16px;border-radius:50%;
  background:var(--accent-deep);
  -webkit-mask:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='4 12.5 9.5 18 20 6'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='4 12.5 9.5 18 20 6'/%3E%3C/svg%3E") center/contain no-repeat;
}
.section--dark .list-check li{color:var(--muted-dark)}
.section--dark .list-check li::before{background:var(--accent-light)}

/* ---------- Pasos ---------- */
.steps{counter-reset:paso;display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.step{position:relative;padding-top:34px}
.step::before{
  counter-increment:paso;content:counter(paso,decimal-leading-zero);
  position:absolute;top:0;left:0;
  font-family:var(--font-title);font-size:.82rem;font-weight:700;letter-spacing:.12em;color:var(--accent-deep);
}
.step::after{content:"";position:absolute;top:9px;left:34px;right:0;height:1px;background:var(--line)}
.step:last-child::after{display:none}
.step h3{font-size:1rem;margin-bottom:.4em}
.step p{font-size:.9rem;color:var(--muted)}
.section--dark .step::before{color:var(--accent-light)}
.section--dark .step::after{background:var(--line-dark)}
.section--dark .step p{color:var(--muted-dark)}

/* ---------- Estadísticas ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.stat{border-left:2px solid var(--accent);padding-left:20px}
.stat strong{display:block;font-family:var(--font-title);font-size:clamp(1.9rem,3vw,2.5rem);font-weight:700;color:var(--ink);letter-spacing:-.03em;line-height:1.1}
.stat span{display:block;font-size:.88rem;color:var(--muted);margin-top:4px}
.section--dark .stat strong{color:#fff}
.section--dark .stat span{color:var(--muted-dark)}

/* ---------- Cita ---------- */
.quote{background:var(--ink-2);position:relative;overflow:hidden}
.quote blockquote{
  margin:0;max-width:56ch;font-family:var(--font-serif);font-style:italic;
  font-size:clamp(1.25rem,2.3vw,1.75rem);line-height:1.5;color:#fff;
}
.quote cite{display:block;margin-top:22px;font-family:var(--font-title);font-style:normal;
  font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-light)}

/* ---------- Panel misión / visión ---------- */
.panel{background:var(--base-2);border-radius:var(--r-lg);padding:clamp(30px,3.4vw,44px);border:1px solid var(--line)}
.panel h3{margin-bottom:.5em}
.panel p{color:var(--muted)}
.section--dark .panel{background:var(--ink-2);border-color:var(--line-dark)}

/* ---------- Gremios ---------- */
.gremios{display:flex;flex-wrap:wrap;gap:14px}
.gremio{
  display:inline-flex;flex-direction:column;gap:2px;
  border:1px solid var(--line);border-radius:var(--r);padding:16px 24px;min-width:180px;background:#fff;
}
.gremio strong{font-family:var(--font-title);font-size:1.02rem;color:var(--ink)}
.gremio span{font-size:.82rem;color:var(--muted)}
.section--dark .gremio{background:var(--ink-2);border-color:var(--line-dark)}
.section--dark .gremio strong{color:#fff}
.section--dark .gremio span{color:var(--muted-dark)}

/* ---------- Galería ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery figure{margin:0;border-radius:var(--r);overflow:hidden;aspect-ratio:3/4;background:var(--base-3)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.gallery figure:hover img{transform:scale(1.05)}

/* ---------- CTA sobre el footer ---------- */
.cta{position:relative;background:var(--ink);overflow:hidden;padding-block:clamp(64px,7vw,100px)}
.cta-bg{position:absolute;inset:0}
.cta-bg img{width:100%;height:100%;object-fit:cover}
.cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,25,34,.94) 0%,rgba(16,25,34,.82) 50%,rgba(16,25,34,.6) 100%)}
.cta .container{position:relative;z-index:2}
.cta-inner{max-width:660px}

/* ---------- Datos de contacto con ícono ---------- */
.contact-list li{margin-bottom:14px}
.contact-list li:last-child{margin-bottom:0}
.contact-item{display:inline-flex;align-items:center;gap:10px;color:inherit;transition:color .2s var(--ease)}
.contact-item svg{width:18px;height:18px;flex:none;color:var(--accent-deep)}
a.contact-item:hover{color:var(--accent-deep)}
.site-footer .contact-item svg{color:var(--accent)}
.site-footer a.contact-item:hover{color:var(--accent-light)}

/* ---------- Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(32px,4.5vw,60px);align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(26px,3vw,38px);box-shadow:var(--sh)}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--font-title);font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:12px 14px;font:inherit;font-size:.95rem;color:var(--text);
  background:var(--base-2);border:1px solid var(--line);border-radius:var(--r);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#fff}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
.form-aviso{border-radius:var(--r);padding:14px 18px;margin-bottom:22px;font-size:.93rem;border:1px solid}
.form-aviso--ok{background:#EEF7EF;border-color:#BFE0C4;color:#255C31}
.form-aviso--err{background:#FDEEEE;border-color:#F0C4C4;color:#8C2B2B}
.map{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);line-height:0}
.map iframe{width:100%;height:380px;border:0;display:block}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);color:var(--muted-dark);
  padding-block:clamp(52px,6vw,74px) 30px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:clamp(28px,3.5vw,48px)}
.site-footer .brand img{height:44px}
.footer-about p{margin-top:20px;font-size:.92rem;color:rgba(255,255,255,.62);max-width:34ch}
.footer-col h4{font-family:var(--font-title);font-size:.76rem;font-weight:600;letter-spacing:.17em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.footer-col li{margin-bottom:10px;font-size:.93rem}
.footer-col a{color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent-light)}
.footer-credit{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  text-align:center;font-size:.8rem;color:rgba(255,255,255,.6);
}
.footer-credit a{color:var(--accent);text-decoration:none}
.footer-credit a:hover{color:color-mix(in srgb,var(--accent) 75%,#fff)}

/* ---------- Reveal ---------- */
/* Sin JS todo se ve; solo se oculta cuando sabemos que el JS está vivo. */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);
  animation:reveal-failsafe 0s linear 3s forwards}
.reveal.is-visible{opacity:1;transform:none}
@keyframes reveal-failsafe{to{opacity:1;transform:none}}
.reveal[data-delay="1"]{transition-delay:.09s}
.reveal[data-delay="2"]{transition-delay:.18s}
.reveal[data-delay="3"]{transition-delay:.27s}
.reveal[data-delay="4"]{transition-delay:.36s}
.reveal[data-delay="5"]{transition-delay:.45s}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr);gap:28px}
  .step::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:880px){
  .burger{display:flex}
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    background:var(--ink);flex-direction:column;align-items:flex-start;justify-content:flex-start;
    gap:0;padding:calc(var(--header-h) + 16px) 30px 40px;
    transform:translateX(102%);transition:transform .38s var(--ease);
    overflow-y:auto;box-shadow:-20px 0 50px rgba(0,0,0,.3);
  }
  .nav.is-open{transform:none}
  .nav-list{flex-direction:column;align-items:flex-start;gap:0;width:100%}
  .nav-list li{width:100%;border-bottom:1px solid var(--line-dark)}
  .nav-list a{display:block;width:100%;padding:15px 0;font-size:1rem;color:rgba(255,255,255,.92)}
  .nav-list a:hover{color:#fff}
  .nav-list a.is-active{color:var(--accent-light)}
  .nav-list a::after{display:none}
  .nav-cta--escritorio{display:none}
  .nav-cta--movil{display:block;width:100%;margin-top:26px}
  .nav-cta--movil .btn{width:100%}
  .grid-3,.grid-2,.media-row{grid-template-columns:1fr}
  .media-row--rev .media-row__media{order:0}
  .contact-grid{grid-template-columns:1fr}
  .hero-facts{grid-template-columns:repeat(2,1fr);gap:20px}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  :root{--gap:20px}
  .container{padding-inline:20px}
  .hero{min-height:auto;padding-top:40px}
  .grid-4,.steps,.stats,.gallery{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .btn{width:100%}
  .btn-row{flex-direction:column}
  .gallery{grid-template-columns:repeat(2,1fr)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;animation:none}
}