/* ===========================================================
   StruLift — Estructuras modulares para ascensores
   Hoja de estilos del sitio reconstruido (estática, sin HubSpot)
   =========================================================== */

:root{
  --ink:#0e1116;
  --ink-2:#161b22;
  --steel:#1c3d5a;        /* azul acero principal (titulares) */
  --steel-deep:#13293d;
  --accent:#3a7ca5;       /* azul claro para enlaces/botones */
  --accent-2:#5b9bc4;
  --paper:#ffffff;
  --paper-2:#f4f7f9;
  --line:#e2e8ed;
  --text:#2b3540;
  --muted:#6a7682;
  --text-inv:#e7eef4;
  --muted-inv:#9aa7b4;

  --header-h:74px;
  --maxw:1180px;
  --pad:clamp(1.2rem,4vw,2.5rem);
  --radius:14px;
  --shadow:0 18px 50px -22px rgba(14,17,22,.35);

  --font-display:'Poppins',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--text);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:400;line-height:1.1;margin:0;color:var(--steel)}
p{margin:0 0 1rem}

.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.section{padding:clamp(3.5rem,8vw,6.5rem) 0}
.eyebrow{
  font-family:var(--font-body);
  font-size:.72rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent);margin:0 0 1rem
}
.lead{font-size:1.06rem;color:var(--muted)}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-body);font-weight:600;font-size:.92rem;
  padding:.85rem 1.6rem;border-radius:50px;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--steel);color:#fff}
.btn-primary:hover{background:var(--steel-deep)}
.btn-ghost{background:transparent;color:var(--steel);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--steel)}
.btn-light{background:#fff;color:var(--steel)}
.btn-outline-inv{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-inv:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header.over-dark{
  background:transparent;border-bottom:1px solid rgba(255,255,255,.12);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:.6rem}
.brand .logo{height:36px;width:auto;display:block}
.brand .logo-dark{display:none}
.over-dark .brand .logo-light{display:none}
.over-dark .brand .logo-dark{display:block}
.footer-logo{height:32px;width:auto;display:block;margin-bottom:1rem}
.nav-links{display:flex;align-items:center;gap:2rem;list-style:none;margin:0;padding:0}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--text);position:relative;padding:.3rem 0}
.over-dark .nav-links a{color:var(--text-inv)}
.nav-links a:hover{color:var(--accent)}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:2px
}
.nav-cta{display:flex;align-items:center;gap:1rem}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:.4rem;flex-direction:column;gap:5px}
.nav-toggle span{width:24px;height:2px;background:var(--steel);display:block;transition:.25s}
.over-dark .nav-toggle span{background:#fff}

/* ---------- Hero (oscuro) ---------- */
.hero{position:relative;background:var(--ink);color:var(--text-inv);overflow:hidden;margin-top:calc(-1 * var(--header-h))}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(1100px 600px at 78% 18%, rgba(58,124,165,.20), transparent 60%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);
  align-items:center;padding:calc(var(--header-h) + clamp(2.5rem,5vw,4rem)) 0 clamp(3.5rem,7vw,6rem)
}
.hero h1{
  color:#fff;font-weight:300;font-size:clamp(2.4rem,5.6vw,4rem);letter-spacing:-.02em;margin-bottom:1.5rem
}
.hero h1 b{font-weight:600;color:var(--accent-2)}
.hero p{color:var(--muted-inv);max-width:46ch;font-size:1.02rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:1rem;margin-top:2rem}
.hero-figure{
  position:relative;border-radius:var(--radius);overflow:hidden;
  aspect-ratio:4/5;box-shadow:0 40px 80px -30px rgba(0,0,0,.7)
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:1rem;bottom:1rem;background:rgba(14,17,22,.72);
  backdrop-filter:blur(6px);color:#fff;padding:.6rem 1rem;border-radius:10px;
  font-size:.8rem;font-weight:500;border:1px solid rgba(255,255,255,.12)
}

/* ---------- Bandas de texto + imagen ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.split.reverse .split-media{order:2}
.split-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3}
.split-media img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:400;margin-bottom:1.2rem;letter-spacing:-.01em}
.split h2 b{font-weight:600}

/* ---------- Modelos (home) ---------- */
.models{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.model-card{
  position:relative;border-radius:var(--radius);overflow:hidden;min-height:420px;
  display:flex;align-items:flex-end;color:#fff;box-shadow:var(--shadow);
  isolation:isolate
}
.model-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;
  transition:transform .6s ease}
.model-card::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(14,17,22,.05) 0%,rgba(14,17,22,.85) 100%)}
.model-card:hover img{transform:scale(1.05)}
.model-card .model-body{padding:2rem}
.model-card h3{color:#fff;font-size:1.7rem;font-weight:500;margin-bottom:.5rem}
.model-card p{color:rgba(255,255,255,.85);font-size:.94rem;margin-bottom:1.2rem;max-width:38ch}
.model-card .arrow{font-weight:600;color:#fff;display:inline-flex;align-items:center;gap:.4rem}
.model-card .arrow span{transition:transform .25s ease}
.model-card:hover .arrow span{transform:translateX(5px)}

/* ---------- Ventajas ---------- */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;margin-top:2.6rem}
.feature{padding:1.8rem 1.5rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);
  transition:transform .25s ease, box-shadow .25s ease}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature .num{font-family:var(--font-display);font-size:2.2rem;font-weight:600;color:var(--accent);line-height:1}
.feature h3{font-size:1.05rem;font-weight:600;margin:.7rem 0 .4rem}
.feature p{font-size:.9rem;color:var(--muted);margin:0}

.section-head{max-width:60ch;margin-bottom:2.6rem}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(1.9rem,4vw,2.8rem);font-weight:400;letter-spacing:-.01em}
.bg-soft{background:var(--paper-2)}

/* ---------- Página de producto ---------- */
.page-hero{background:var(--steel-deep);color:#fff;padding:clamp(3rem,7vw,5rem) 0 clamp(2.5rem,6vw,4rem)}
.page-hero .crumbs{font-size:.82rem;color:var(--muted-inv);margin-bottom:1rem;letter-spacing:.04em}
.page-hero .crumbs a:hover{color:#fff}
.page-hero h1{color:#fff;font-size:clamp(2.2rem,5vw,3.4rem);font-weight:300;letter-spacing:-.01em}
.page-hero p{color:var(--muted-inv);max-width:60ch;margin-top:1rem}

/* Acabados grid */
.finishes{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
.finish{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  display:flex;flex-direction:column;transition:transform .25s ease, box-shadow .25s ease
}
.finish:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.finish .swatch{height:190px;position:relative}
.finish .swatch span{
  position:absolute;left:.8rem;top:.8rem;background:rgba(14,17,22,.55);color:#fff;
  font-size:.66rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  padding:.3rem .6rem;border-radius:6px;backdrop-filter:blur(4px)
}
.finish .finish-body{padding:1.5rem;display:flex;flex-direction:column;flex:1}
.finish h3{font-size:1.12rem;font-weight:600;color:var(--steel);margin-bottom:.7rem;line-height:1.25}
.finish p{font-size:.88rem;color:var(--muted);margin-bottom:1rem}
.finish .plus{display:block;font-size:.78rem;font-weight:600;color:var(--accent);margin-bottom:1.2rem;padding-left:.7rem;border-left:2px solid var(--accent)}
.finish .more{margin-top:auto;font-weight:600;font-size:.85rem;color:var(--accent);
  display:inline-flex;align-items:center;gap:.4rem}
.finish .more span{transition:transform .25s ease}
.finish:hover .more span{transform:translateX(4px)}

/* Material swatches (representación de acabados) */
.sw-chapa-ciega{background:#d9cbb0}
.sw-chapa-perf{background:#c9b89a;
  background-image:radial-gradient(circle, rgba(60,45,25,.55) 1.4px, transparent 1.7px);
  background-size:13px 13px}
.sw-inox{background:linear-gradient(100deg,#b7bcc0,#eef1f3 18%,#9aa1a7 38%,#e6e9eb 60%,#aeb4b9 80%,#d3d8db)}
.sw-cristal-trans{background:linear-gradient(140deg,#dff1f3,#a9d2d6 55%,#cfe7ea)}
.sw-cristal-trasl{background:linear-gradient(140deg,#eef4f3,#d4e4e2 60%,#e7efee)}
.sw-cristal-mat{background:linear-gradient(140deg,#e7ebec,#cdd6d7 55%,#dee4e4)}
.sw-cristal-ahum{background:linear-gradient(140deg,#5d6b78,#2f3b46 55%,#46535f)}
.sw-sandwich{background:#d9cbb0;
  background-image:repeating-linear-gradient(180deg,transparent 0 26px,rgba(110,90,60,.35) 26px 28px)}
.sw-sin{background:linear-gradient(140deg,#27445e,#0e1116);position:relative}
.sw-sin::after{content:"sin envolvente";position:absolute;inset:0;display:grid;place-items:center;
  color:rgba(255,255,255,.5);font-family:var(--font-display);font-size:.85rem;letter-spacing:.1em}
.swatch.photo{background-size:cover;background-position:center}

/* Color RAL */
.ral{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.ral-swatches{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.ral-swatches figure{margin:0;text-align:center}
.ral-swatches i{display:block;width:100%;aspect-ratio:1;border-radius:10px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.10)}
.ral-swatches figcaption{font-size:.76rem;color:var(--muted);margin-top:.4rem;font-weight:600;letter-spacing:.02em}
.ral-fan{display:flex;flex-wrap:wrap;gap:.5rem;max-width:420px}
.ral-fan i{width:46px;height:46px;border-radius:8px;display:block;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:10px;margin-bottom:.9rem;background:var(--paper-2);overflow:hidden}
.faq summary{
  list-style:none;cursor:pointer;padding:1.15rem 1.3rem;font-weight:600;color:var(--steel);
  display:flex;align-items:center;gap:.9rem;font-size:1rem
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .ic{font-family:var(--font-display);font-weight:600;color:var(--accent);transition:transform .25s ease}
.faq details[open] summary .ic{transform:rotate(45deg)}
.faq .answer{padding:0 1.3rem 1.2rem 3.1rem;color:var(--muted);font-size:.94rem}

/* ---------- Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(2rem,5vw,4rem)}
.contact-info h3{font-size:1.5rem;font-weight:500;margin-bottom:1.5rem}
.contact-block{margin-bottom:1.6rem}
.contact-block .label{font-size:.72rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:.35rem}
.contact-block a, .contact-block address{font-style:normal;font-size:1.05rem;color:var(--text);font-weight:500;display:block}
.contact-block a:hover{color:var(--accent)}

.form{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.6rem,3vw,2.4rem)}
.field{margin-bottom:1.1rem}
.field label{display:block;font-size:.85rem;font-weight:600;color:var(--steel);margin-bottom:.4rem}
.field label .req{color:#c0563f}
.field input,.field textarea{
  width:100%;padding:.8rem .95rem;border:1px solid var(--line);border-radius:9px;
  font-family:var(--font-body);font-size:.95rem;color:var(--text);background:#fff;transition:border-color .2s ease, box-shadow .2s ease
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(58,124,165,.15)}
.field textarea{resize:vertical;min-height:120px}
.form .btn{width:100%;justify-content:center;margin-top:.4rem}
.form-note{font-size:.8rem;color:var(--muted);margin-top:1rem;text-align:center}

.map-embed{margin-top:3rem;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);height:380px}
.map-embed iframe{width:100%;height:100%;border:0;display:block}

/* ---------- CTA band ---------- */
.cta-band{background:var(--steel);color:#fff;border-radius:var(--radius);padding:clamp(2.5rem,5vw,3.6rem);
  display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap}
.cta-band h2{color:#fff;font-weight:400;font-size:clamp(1.6rem,3.2vw,2.3rem);max-width:24ch}
.cta-band p{color:rgba(255,255,255,.85);margin:.6rem 0 0;max-width:46ch}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--muted-inv);padding:clamp(3rem,6vw,4.5rem) 0 2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
.site-footer .brand{color:#fff;margin-bottom:1rem}
.site-footer p{font-size:.92rem;max-width:38ch}
.footer-col h4{color:#fff;font-size:.78rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;margin-bottom:1.1rem;font-family:var(--font-body)}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:.6rem}
.footer-col a{font-size:.92rem;color:var(--muted-inv)}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;font-size:.82rem;color:var(--muted-inv)}

/* ---------- Reveal animation (mejora progresiva) ---------- */
.reveal{opacity:1;transform:none}
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-figure{aspect-ratio:16/11;max-height:420px}
  .split{grid-template-columns:1fr}
  .split.reverse .split-media{order:0}
  .models{grid-template-columns:1fr}
  .features{grid-template-columns:1fr 1fr}
  .finishes{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .ral{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .nav-links.open{
    display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;
    gap:0;background:#fff;border-bottom:1px solid var(--line);padding:.5rem var(--pad) 1rem
  }
  .nav-links.open a{padding:.9rem 0;border-bottom:1px solid var(--line);color:var(--text)}
  .over-dark .nav-links.open{background:var(--ink)}
  .over-dark .nav-links.open a{color:#fff;border-bottom:1px solid rgba(255,255,255,.14)}
  .over-dark .nav-links.open a.active{color:var(--accent-2)}
}
@media(max-width:560px){
  .features{grid-template-columns:1fr}
  .finishes{grid-template-columns:1fr}
  .ral-swatches{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.feature:hover,.finish:hover,.model-card:hover img{transform:none}
}