/* ============================================================
   TreeHaus Constructora — estilos
   ============================================================ */
:root{
  --green:#6f7d5c;
  --green-dark:#55613f;
  --olive:#3f4a30;
  --sage:#a5ac96;
  --paper:#f4f3ef;
  --paper-2:#eceae3;
  --ink:#20211d;
  --muted:#6d6f66;
  --line:#e2e0d8;
  --white:#ffffff;
  --wrap:1200px;
  --r:4px;
  --shadow:0 18px 40px -20px rgba(31,33,25,.35);
  --t:.25s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);background:var(--white);
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-weight:400;line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,.brand{font-family:'Jost','Inter',sans-serif;font-weight:400;line-height:1.12;letter-spacing:.5px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.center{text-align:center;margin-top:40px}
.skip{position:absolute;left:-9999px;top:0;background:var(--olive);color:#fff;padding:10px 16px;z-index:1000}
.skip:focus{left:8px;top:8px}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;font-family:'Jost',sans-serif;font-size:.92rem;letter-spacing:1.2px;
  text-transform:uppercase;border:1px solid transparent;border-radius:var(--r);
  cursor:pointer;transition:var(--t);white-space:nowrap;
}
.btn--solid{background:var(--green);color:#fff}
.btn--solid:hover{background:var(--green-dark)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.75)}
.btn--ghost:hover{background:rgba(255,255,255,.15)}
.btn--block{width:100%;margin-top:8px}
.btn--nav{background:var(--green);color:#fff;padding:12px 22px}
.btn--nav:hover{background:var(--green-dark)}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:100;background:var(--white);border-bottom:1px solid var(--line);transition:var(--t)}
.head-inner{display:flex;align-items:center;justify-content:space-between;min-height:104px}
.brand-logo{height:88px;width:auto}
.brand-logo--light{display:none}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-family:'Jost',sans-serif;font-size:.9rem;letter-spacing:1.3px;text-transform:uppercase;color:var(--ink);transition:var(--t)}
.nav a:not(.btn):hover{color:var(--green)}
.nav a[aria-current="page"]{color:var(--green)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:2px;background:var(--ink);transition:var(--t)}

/* Header transparente sobre hero */
.site-head.is-transparent{position:fixed;left:0;right:0;background:transparent;border-bottom-color:transparent}
.site-head.is-transparent .nav a{color:#fff}
.site-head.is-transparent .brand-logo--dark{display:none}
.site-head.is-transparent .brand-logo--light{display:block}
.site-head.is-transparent .nav-toggle span{background:#fff}
.site-head.is-transparent.scrolled{position:fixed;background:var(--white);border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(0,0,0,.5)}
.site-head.is-transparent.scrolled .nav a{color:var(--ink)}
.site-head.is-transparent.scrolled .nav a.btn--nav{color:#fff}
.site-head.is-transparent.scrolled .nav a:hover{color:var(--green)}
.site-head.is-transparent.scrolled .brand-logo--dark{display:block}
.site-head.is-transparent.scrolled .brand-logo--light{display:none}
.site-head.is-transparent.scrolled .nav-toggle span{background:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:96vh;display:flex;align-items:center;
  background:var(--hero-bg) center/cover no-repeat;color:#fff}
.hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,24,16,.72) 0%,rgba(20,24,16,.35) 55%,rgba(20,24,16,.15) 100%)}
.hero-inner{position:relative;padding:120px 24px}
.hero-copy{max-width:640px}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.3rem);font-weight:300;margin:0 0 22px}
.hero h1 span{font-weight:500}
.hero p{font-size:1.15rem;max-width:520px;margin:0 0 34px;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- Secciones ---------- */
.section{padding:96px 0}
.section--muted{background:var(--paper)}
.eyebrow{font-family:'Jost',sans-serif;text-transform:uppercase;letter-spacing:3px;font-size:.8rem;
  color:var(--green);text-align:center;margin:0 0 12px}
.eyebrow--light{color:#fff;opacity:.9}
.section-title{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:300;text-align:center;margin:0 0 56px}

/* ---------- Intro ---------- */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.intro-media img{border-radius:var(--r);box-shadow:var(--shadow);width:100%;height:100%;max-height:560px;object-fit:cover}
.intro-copy h2{font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:300;margin:0 0 22px}
.intro-copy p{color:var(--muted);margin:0 0 18px}
.intro-copy .btn{margin-top:14px}

/* ---------- Servicios ---------- */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:40px 30px;
  text-align:center;transition:var(--t)}
.service:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.service-ico{display:inline-flex;color:var(--olive);margin-bottom:18px}
.service h3{font-size:1.3rem;margin:0 0 10px;letter-spacing:1px}
.service p{color:var(--muted);font-size:.96rem;margin:0}

/* ---------- Proyectos destacados (home) ---------- */
.featured-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:220px;gap:18px}
.fcard{position:relative;overflow:hidden;border-radius:var(--r)}
.fcard img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.fcard:hover img{transform:scale(1.06)}
.fcard--lg{grid-column:span 2;grid-row:span 2}
.fcard--sm{grid-column:span 1;grid-row:span 1}
.fcard::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(20,24,16,.78),transparent 55%)}
.fcard-info{position:absolute;left:0;bottom:0;padding:22px;color:#fff;z-index:2}
.fcard-info h3{font-size:1.3rem;font-weight:400;margin:0 0 4px}
.fcard-info p{font-size:.85rem;margin:0;color:rgba(255,255,255,.85)}
.fcard--sm .fcard-info h3{font-size:1.02rem}

/* ---------- Stats ---------- */
.stats{background:var(--green);color:#fff;padding:70px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-num{display:block;font-family:'Jost',sans-serif;font-size:3rem;font-weight:300;line-height:1}
.stat-label{display:block;margin-top:10px;text-transform:uppercase;letter-spacing:1.5px;font-size:.82rem;opacity:.9}

/* ---------- Proceso ---------- */
.process-grid{display:flex;align-items:flex-start;justify-content:center;gap:6px;flex-wrap:wrap}
.step{flex:1;min-width:120px;text-align:center;padding:10px}
.step-ico{display:inline-flex;color:var(--olive)}
.step-n{display:block;color:var(--green);font-family:'Jost',sans-serif;letter-spacing:2px;margin:12px 0 4px;font-size:.9rem}
.step h3{font-size:1.05rem;font-weight:400;margin:0;letter-spacing:1px}
.step-arrow{align-self:center;color:var(--sage);font-size:1.5rem;padding-top:26px}

/* ---------- CTA ---------- */
.cta{position:relative;background:var(--cta-bg) center/cover no-repeat;color:#fff;padding:110px 0}
.cta::before{content:"";position:absolute;inset:0;background:rgba(20,24,16,.6)}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta h2{font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:300;margin:0}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-foot{background:var(--olive);color:rgba(255,255,255,.82);padding:70px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.foot-brand img{margin-bottom:18px}
.foot-brand p{font-size:.92rem;max-width:320px;margin:0}
.foot-col h3{font-family:'Jost',sans-serif;font-size:1rem;letter-spacing:2px;text-transform:uppercase;color:#fff;margin:0 0 18px}
.foot-col ul{list-style:none;padding:0;margin:0}
.foot-col li{margin-bottom:10px;font-size:.92rem;display:flex;flex-direction:column}
.foot-col a:hover{color:#fff}
.foot-label{display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:1.5px;color:var(--sage)}
.socials{display:flex;gap:14px}
.socials a{width:42px;height:42px;border:1px solid rgba(255,255,255,.3);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:#fff;transition:var(--t)}
.socials a:hover{background:var(--green);border-color:var(--green)}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.15);padding:22px 24px;font-size:.82rem;color:rgba(255,255,255,.6)}
.foot-bottom p{margin:0}

/* ---------- Página interior: encabezado ---------- */
.page-head{background:var(--paper);padding:150px 0 60px;text-align:center}
.page-head--img{position:relative;background:var(--head-bg) var(--head-pos,center)/cover no-repeat;padding:190px 0 90px}
.page-head--img::before{content:"";position:absolute;inset:0;background:rgba(20,24,16,.55)}
.page-head--img .wrap{position:relative}
.page-title{font-size:clamp(2.1rem,4.2vw,3.2rem);font-weight:300;margin:.2em 0 0}
.page-title--light{color:#fff}
.page-lead{max-width:620px;margin:20px auto 0;color:var(--muted)}
.page-head--img .page-lead{color:rgba(255,255,255,.9)}

/* ---------- Filtros de proyectos ---------- */
.filters{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:44px}
.filter{background:none;border:0;font-family:'Jost',sans-serif;text-transform:uppercase;letter-spacing:1.5px;
  font-size:.85rem;color:var(--muted);padding:10px 18px;border-radius:40px;cursor:pointer;transition:var(--t)}
.filter:hover{color:var(--ink)}
.filter.is-active{background:var(--green);color:#fff}

/* ---------- Grid de proyectos ---------- */
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.pcard{background:var(--white);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  transition:var(--t);opacity:1}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.pcard.is-hidden{display:none}
.pcard-media{aspect-ratio:3/2;overflow:hidden}
.pcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.pcard:hover .pcard-media img{transform:scale(1.06)}
.pcard-body{padding:22px}
.pcard-body h3{font-size:1.25rem;font-weight:400;margin:0 0 6px;letter-spacing:.5px}
.pcard-loc{color:var(--muted);font-size:.9rem;margin:0 0 2px}
.pcard-area{color:var(--green);font-size:.85rem;letter-spacing:1px;text-transform:uppercase;margin:0}

/* ---------- Nosotros ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.about-copy p{color:var(--muted);margin:0 0 20px;font-size:1.02rem}
.about-media img{border-radius:var(--r);box-shadow:var(--shadow)}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.value{text-align:center;padding:20px}
.value h3{font-size:1.25rem;font-weight:400;margin:14px 0 8px}
.value p{color:var(--muted);margin:0;font-size:.95rem}
.team-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.team-gallery img{border-radius:var(--r);aspect-ratio:3/4;object-fit:cover;width:100%}

/* ---------- Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.contact-info h2{font-size:1.9rem;font-weight:300;margin:0 0 26px}
.contact-list{list-style:none;padding:0;margin:0 0 26px}
.contact-list li{display:flex;gap:16px;align-items:flex-start;margin-bottom:22px}
.ci-ico{flex:0 0 auto;width:46px;height:46px;border-radius:50%;background:var(--paper);
  display:flex;align-items:center;justify-content:center;color:var(--green)}
.ci-label{display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:1.5px;color:var(--muted)}
.contact-list a{font-size:1.02rem}
.contact-list a:hover{color:var(--green)}
.contact-note{color:var(--muted);font-size:.9rem;border-left:3px solid var(--green);padding-left:14px}

.contact-form-wrap{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:38px;box-shadow:var(--shadow)}
.cform .field{margin-bottom:20px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.cform label{display:block;font-size:.88rem;font-weight:500;margin-bottom:8px;letter-spacing:.3px}
.cform input,.cform select,.cform textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:var(--r);
  font-family:inherit;font-size:1rem;color:var(--ink);background:var(--white);transition:var(--t)}
.cform input:focus,.cform select:focus,.cform textarea:focus{
  outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(111,125,92,.15)}
.cform textarea{resize:vertical}
.hint{color:var(--muted);font-size:.82rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.captcha-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.captcha-row img{border:1px solid var(--line);border-radius:var(--r)}
.captcha-row input{max-width:150px;text-transform:uppercase;letter-spacing:3px;font-weight:600}
.captcha-reload{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  width:44px;height:44px;font-size:1.2rem;cursor:pointer;color:var(--green);transition:var(--t)}
.captcha-reload:hover{background:var(--green);color:#fff}
.form-legal{font-size:.78rem;color:var(--muted);text-align:center;margin:14px 0 0}

/* ---------- Alertas ---------- */
.alert{border-radius:var(--r);padding:16px 18px;margin-bottom:24px;font-size:.95rem}
.alert--ok{background:#eaf2e2;border:1px solid #b8cea0;color:#3f5a26}
.alert--err{background:#fbeceb;border:1px solid #e6b7b3;color:#8a3128}
.alert ul{margin:8px 0 0;padding-left:20px}

/* ---------- WhatsApp flotante ---------- */
.wa-float{position:fixed;right:22px;bottom:22px;z-index:200;width:58px;height:58px;border-radius:50%;
  background:#25d366;color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px -8px rgba(37,211,102,.7);transition:var(--t)}
.wa-float:hover{transform:scale(1.08)}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .intro-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .services-grid,.values-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .team-gallery{grid-template-columns:repeat(2,1fr)}
  .featured-grid{grid-auto-rows:200px}
}
@media(max-width:760px){
  .nav{position:fixed;inset:104px 0 auto 0;flex-direction:column;background:var(--white);
    padding:20px 24px 30px;gap:6px;border-bottom:1px solid var(--line);
    transform:translateY(-140%);transition:transform .3s ease;box-shadow:var(--shadow)}
  .nav.open{transform:translateY(0)}
  .nav a{color:var(--ink)!important;width:100%;padding:14px 4px;border-bottom:1px solid var(--line)}
  .nav a.btn--nav{margin-top:10px;justify-content:center}
  .site-head.is-transparent .nav a{color:var(--ink)}
  .nav-toggle{display:flex}
  .section{padding:66px 0}
  .services-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:36px 20px}
  .projects-grid{grid-template-columns:1fr 1fr}
  .featured-grid{grid-template-columns:1fr 1fr;grid-auto-rows:180px}
  .fcard--lg{grid-column:span 2;grid-row:span 1}
  .process-grid{flex-direction:column;align-items:center}
  .step-arrow{transform:rotate(90deg);padding:0}
  .cta-inner{flex-direction:column;text-align:center;align-items:center}
  .field-row{grid-template-columns:1fr}
  .foot-bottom{justify-content:center;text-align:center}
}
@media(max-width:480px){
  .projects-grid,.featured-grid,.foot-grid,.team-gallery{grid-template-columns:1fr}
  .fcard--lg{grid-column:span 1}
  .stats-grid{grid-template-columns:1fr}
  .contact-form-wrap{padding:24px}
}