/* ESQUELETO CORPORATIVO TÉCNICO — industrial robusto (B2B) */
:root {
  --color-primario: #1f2937;
  --color-secundario: #d97706;
  --color-acento: #f59e0b;
  --color-fondo: #ffffff;
  --color-fondo-alt: #f4f6f8;
  --color-texto: #1e293b;
  --color-texto-suave: #64748b;
  --color-claro: #ffffff;
  --fuente-titulos: 'Archivo', sans-serif;
  --fuente-texto: 'Inter', sans-serif;
  --radio: 10px;
  --sombra: 0 8px 30px rgba(0, 0, 0, 0.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--fuente-texto);color:var(--color-texto);background:var(--color-fondo);line-height:1.6}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{width:min(1140px,92%);margin:0 auto}

.btn{display:inline-block;padding:.85rem 1.7rem;border-radius:6px;font-weight:700;font-size:.92rem;letter-spacing:.03em;border:0;cursor:pointer;transition:transform .15s;font-family:inherit;text-transform:uppercase;font-size:.83rem}
.btn:hover{transform:translateY(-2px)}
.btn--cta{background:var(--color-secundario);color:#fff;box-shadow:0 6px 22px color-mix(in srgb,var(--color-secundario) 45%,transparent)}
.btn--ghost{border:2px solid #fff;color:#fff;background:transparent}

.topbar{background:#0f172a;color:rgba(255,255,255,.8);font-size:.78rem;padding:.45rem 0}
.topbar__inner{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}

.header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--color-primario) 95%,transparent);backdrop-filter:blur(8px);color:#fff;border-bottom:3px solid var(--color-secundario)}
.header__inner{display:flex;align-items:center;justify-content:space-between;padding:.85rem 0}
.header__logo{display:flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.15rem}
.header__logo svg{width:34px;height:34px;border-radius:8px}
.nav{display:flex;gap:1.5rem;font-size:.92rem}
.nav a{opacity:.85;transition:opacity .15s}.nav a:hover{opacity:1}
.header__right{display:flex;align-items:center;gap:.9rem}
.header .btn{padding:.55rem 1.2rem;font-size:.75rem}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer}

.hero{position:relative;min-height:78vh;display:flex;align-items:center;color:#fff;overflow:hidden;padding-bottom:4.5rem}
.hero__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(100deg,color-mix(in srgb,var(--color-primario) 92%,transparent) 35%,color-mix(in srgb,var(--color-primario) 30%,transparent) 100%)}
.hero__content{position:relative;max-width:680px;padding:5rem 0 1rem}
.hero__badge{display:inline-block;padding:.3rem .9rem;border-radius:4px;background:var(--color-secundario);font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin-bottom:1.2rem}
.hero__title{font-family:var(--fuente-titulos);font-size:clamp(2.2rem,5.5vw,3.5rem);line-height:1.08;font-weight:800;margin-bottom:1rem;text-shadow:0 3px 20px rgba(0,0,0,.4)}
.hero__sub{font-size:1.12rem;opacity:.94;margin-bottom:1.8rem;max-width:560px}
.hero__actions{display:flex;gap:.9rem;flex-wrap:wrap}
.hero__specs{position:absolute;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(3,1fr);background:color-mix(in srgb,var(--color-primario) 85%,transparent);backdrop-filter:blur(8px);border-top:1px solid rgba(255,255,255,.15)}
.spec{padding:1rem 1.5rem;text-align:center;border-right:1px solid rgba(255,255,255,.12)}
.spec:last-child{border-right:0}
.spec strong{display:block;font-family:var(--fuente-titulos);font-size:1.6rem;font-weight:800;color:var(--color-secundario)}
.spec span{font-size:.78rem;opacity:.85}

.kicker{display:block;font-size:.74rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--color-secundario);margin-bottom:.7rem;text-align:center}
.section{padding:4.5rem 0}
.section--alt{background:var(--color-fondo-alt)}
.section__title{font-family:var(--fuente-titulos);font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:800;text-align:center;margin-bottom:.6rem}
.section__sub{text-align:center;color:var(--color-texto-suave);margin-bottom:2.5rem}
.section__title--light{color:#fff}
.section__sub--light{color:rgba(255,255,255,.85)}
.grid{display:grid;gap:1.4rem}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}

.card{background:var(--color-fondo);border:1px solid #e2e8f0;border-top:4px solid var(--color-secundario);border-radius:var(--radio);padding:1.5rem;box-shadow:var(--sombra);transition:transform .2s}
.card:hover{transform:translateY(-4px)}
.card__top{display:flex;justify-content:space-between;align-items:center;margin-bottom:.8rem}
.card__ref{font-size:.7rem;font-weight:800;letter-spacing:.1em;color:var(--color-texto-suave);border:1px solid #e2e8f0;padding:.15rem .5rem;border-radius:4px}
.card__icon{font-size:1.9rem}
.card__title{font-size:1.05rem;font-weight:800;margin-bottom:.4rem}
.card__text{color:var(--color-texto-suave);font-size:.92rem}

.proyecto{position:relative;border-radius:var(--radio);overflow:hidden;box-shadow:var(--sombra)}
.proyecto img{width:100%;height:170px;object-fit:cover;transition:transform .35s}
.proyecto:hover img{transform:scale(1.07)}
.proyecto__data{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,.85));color:#fff;padding:.9rem 1rem}
.proyecto__data strong{display:block;font-size:.95rem}
.proyecto__data span{font-size:.75rem;opacity:.8}

.etapa{background:var(--color-fondo);border:1px solid #e2e8f0;border-radius:var(--radio);padding:1.6rem;box-shadow:var(--sombra)}
.etapa__num{display:inline-block;font-family:var(--fuente-titulos);font-size:1.8rem;font-weight:800;color:var(--color-secundario);margin-bottom:.6rem}
.etapa h3{font-size:1.1rem;font-weight:800;margin-bottom:.4rem}
.etapa p{color:var(--color-texto-suave);font-size:.94rem}

.quote{background:var(--color-fondo);border-left:4px solid var(--color-secundario);border-radius:var(--radio);padding:1.4rem 1.5rem;box-shadow:var(--sombra)}
.quote p{font-size:.97rem;margin-bottom:.8rem}
.quote footer{font-weight:700;font-size:.85rem}
.quote footer em{color:var(--color-texto-suave);font-weight:400}

.section--cta{background:linear-gradient(135deg,var(--color-primario),color-mix(in srgb,var(--color-primario) 55%,var(--color-secundario)));color:#fff}
.lead-box{max-width:520px;margin:0 auto}
.lead-form{display:flex;flex-direction:column;gap:.8rem;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--radio);padding:1.5rem}
.lead-form input,.lead-form textarea{width:100%;padding:.8rem .95rem;border-radius:8px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);color:#fff;font-family:inherit;font-size:.95rem}
.lead-form input::placeholder,.lead-form textarea::placeholder{color:rgba(255,255,255,.6)}
.lead-form input:focus,.lead-form textarea:focus{outline:2px solid var(--color-secundario);border-color:transparent}
.form-ok{text-align:center;font-weight:700;color:#4ade80}

.footer{background:var(--color-primario);color:rgba(255,255,255,.85);padding:2.4rem 0;font-size:.9rem}
.footer__inner{display:flex;flex-direction:column;gap:1rem}
.footer strong{color:#fff;font-size:1.05rem}
.footer__meta{display:flex;justify-content:space-between;gap:.6rem;flex-wrap:wrap;opacity:.7;font-size:.8rem}

.wa-float{position:fixed;bottom:1.4rem;right:1.4rem;z-index:60;width:56px;height:56px;border-radius:50%;background:#25d366;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:0 8px 24px rgba(37,211,102,.45)}

.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s,transform .6s}
.reveal.visible{opacity:1;transform:none}

@media(max-width:768px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;padding:.6rem 0;background:var(--color-primario)}
  .nav.open{display:flex}
  .nav a{padding:.7rem 1.4rem;border-top:1px solid rgba(255,255,255,.08)}
  .nav-toggle{display:block}
  .header__cta{display:none}
  .hero{min-height:70vh}
  .hero__specs{grid-template-columns:1fr}
  .spec{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding:.7rem}
  .section{padding:3.2rem 0}
}