/* ============================================================
   MG INGENIERÍA — Hoja de estilos
   Paleta: azul marino profundo + dorado + blanco
   ============================================================ */

:root{
  --navy-900:#061530;
  --navy-800:#0a1f44;
  --navy-700:#0f2a54;
  --navy-600:#16375f;
  --gold:#c8952f;
  --gold-300:#e6bd6d;
  --gold-600:#9c6f1d;
  --ink:#12203a;
  --body:#4b5a70;
  --line:#dde3ec;
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --white:#ffffff;

  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 2px 10px rgba(6,21,48,.06);
  --shadow:0 14px 40px rgba(6,21,48,.10);
  --shadow-lg:0 26px 70px rgba(6,21,48,.18);

  --wrap:1180px;
  --sans:'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --serif:'Playfair Display', Georgia, serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--body);background:var(--bg);
  font-size:16px;line-height:1.65;overflow-x:hidden;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--ink);margin:0 0 .5em;line-height:1.12;letter-spacing:-.01em}
h1{font-size:clamp(2.6rem,6vw,4.4rem);font-weight:800;text-transform:uppercase}
h2{font-size:clamp(1.9rem,4vw,3rem);font-weight:800;text-transform:uppercase}
h3{font-size:1.12rem;font-weight:700}
p{margin:0 0 1rem}
ul{margin:0;padding:0;list-style:none}
.gold{color:var(--gold)}

.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:22px}
.container.narrow{max-width:920px}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--gold);color:#fff;
  padding:.7rem 1.1rem;z-index:999;border-radius:0 0 8px 0;font-weight:600;
}
.skip-link:focus{left:0}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:4px}

/* ───────── Botones ───────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.95rem 1.9rem;border:0;border-radius:999px;cursor:pointer;
  font-family:var(--sans);font-size:.86rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;transition:transform .2s,box-shadow .2s,background .2s,color .2s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-sm{padding:.62rem 1.25rem;font-size:.74rem}
.btn-block{width:100%}
.btn-gold{background:linear-gradient(135deg,var(--gold-300),var(--gold));color:#22190a;box-shadow:0 10px 26px rgba(200,149,47,.35)}
.btn-gold:hover{box-shadow:0 16px 34px rgba(200,149,47,.45)}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-outline{background:transparent;color:var(--gold-300);box-shadow:inset 0 0 0 2px rgba(230,189,109,.55)}
.btn-outline:hover{background:rgba(230,189,109,.12)}
.btn-whatsapp{background:#25D366;color:#06331a;box-shadow:0 10px 26px rgba(37,211,102,.3)}
.btn-whatsapp:hover{box-shadow:0 16px 34px rgba(37,211,102,.42)}
.btn-link{background:none;color:rgba(255,255,255,.72);text-transform:none;letter-spacing:0;
  font-weight:600;padding:.9rem .6rem;text-decoration:underline;text-underline-offset:4px}
.btn-link:hover{color:#fff}
.btn-ico{width:19px;height:19px;fill:currentColor;flex:none}

/* ───────── Header ───────── */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,31,68,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);transition:box-shadow .3s,background .3s;
}
.site-header.scrolled{background:rgba(6,21,48,.97);box-shadow:0 8px 30px rgba(0,0,0,.28)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:76px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand-mark{flex:none;height:52px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-name{color:#fff;font-weight:600;font-size:.95rem;letter-spacing:.34em}
.brand-tag{color:var(--gold-300);font-size:.53rem;letter-spacing:.24em;text-transform:uppercase;margin-top:5px}

.nav ul{display:flex;align-items:center;gap:.35rem}
.nav a{
  display:block;padding:.55rem .85rem;color:rgba(255,255,255,.85);
  font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  border-radius:999px;transition:color .2s,background .2s;
}
.nav a:not(.btn):hover,.nav a.active{color:var(--gold-300);background:rgba(255,255,255,.07)}
.nav a.btn{color:#22190a}

.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:46px;height:42px;padding:0 10px;background:transparent;border:0;cursor:pointer;
}
.nav-toggle span{height:2px;background:#fff;border-radius:2px;transition:transform .28s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ───────── Hero ───────── */
.hero{position:relative;color:#fff;overflow:hidden;isolation:isolate}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(1000px 620px at 78% 14%,rgba(200,149,47,.20),transparent 62%),
    radial-gradient(760px 520px at 8% 96%,rgba(22,55,95,.85),transparent 60%),
    linear-gradient(150deg,var(--navy-900) 0%,var(--navy-800) 46%,var(--navy-700) 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 50% 40%,#000,transparent 78%);
}
.hero-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center;
  padding:clamp(4rem,9vw,7.5rem) 22px clamp(4.5rem,9vw,7rem);
}
.hero h1{color:#fff;margin-bottom:1.2rem}
.lead{font-size:clamp(1.02rem,1.6vw,1.2rem);color:rgba(255,255,255,.82);max-width:34rem}
.lead strong{color:#fff;font-weight:700}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin:2rem 0 2.6rem}

.eyebrow{
  display:flex;align-items:center;gap:.7rem;margin:0 0 1.1rem;
  font-size:.73rem;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:var(--gold-300);
}
.eyebrow.center{justify-content:center;color:var(--gold)}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(200,149,47,.25)}
.eyebrow .line{width:44px;height:1px;background:currentColor;opacity:.55}

.hero-stats{display:flex;flex-wrap:wrap;gap:2.2rem;padding-top:1.8rem;border-top:1px solid rgba(255,255,255,.16)}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:1.6rem;font-weight:800;color:var(--gold-300);font-family:var(--serif)}
.hero-stats span{font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.62)}

.hero-art{display:flex;justify-content:center}

/* Lámina: el sketch estructural se dibuja sobre papel cuadriculado */
.blueprint{
  position:relative;margin:0;width:min(100%,430px);
  display:flex;flex-direction:column;gap:.7rem;
  padding:1.5rem;border-radius:var(--radius-lg);
  background:linear-gradient(158deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-lg);
  animation:float 9s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(-7px)}50%{transform:translateY(7px)}}
.blueprint::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(circle at 50% 42%,#000,transparent 82%);
          mask-image:radial-gradient(circle at 50% 42%,#000,transparent 82%);
}
.sketch{position:relative;display:block;width:100%;height:auto}

/* Trazos del sketch, por elemento estructural */
.sk{fill:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:round;
  vector-effect:non-scaling-stroke}
.terreno,.terreno-h{stroke:rgba(255,255,255,.26)}
.zapata{stroke:rgba(255,255,255,.5)}
.pilar{stroke:var(--gold-300)}
.pilar-b{stroke:var(--gold);opacity:.55}
.viga{stroke:rgba(255,255,255,.8)}
.losa{stroke:rgba(255,255,255,.55)}
.losa-canto{stroke:rgba(255,255,255,.36)}
.cubierta{stroke:rgba(255,255,255,.7)}
.vano{stroke:rgba(255,255,255,.28)}
.cota,.cota-aux{stroke:var(--gold)}
.sk-txt{fill:var(--gold-300);stroke:none;font-family:var(--sans);
  font-size:8.5px;font-weight:600;letter-spacing:.4px}

/* ───────── Valores ───────── */
.values{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding-block:3.4rem}
.value{padding:0 2rem;text-align:center;border-left:1px solid var(--line)}
.value:first-child{border-left:0}
.value .ico{width:46px;height:46px;fill:none;stroke:var(--gold);stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;margin-bottom:.9rem}
.value h3{text-transform:uppercase;letter-spacing:.1em;font-size:.92rem}
.value p{font-size:.88rem;margin:0}

/* ───────── Secciones ───────── */
.section{padding:clamp(4rem,8vw,6.5rem) 0}
.section-dark{
  background:linear-gradient(160deg,var(--navy-900),var(--navy-800) 60%,var(--navy-700));
  color:rgba(255,255,255,.8);
}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-dark .eyebrow.center{color:var(--gold-300)}
.section-head{text-align:center;max-width:44rem;margin:0 auto clamp(2.6rem,5vw,4rem)}
.section-sub{font-size:1.02rem;margin-top:1rem}
.section-dark .section-sub{color:rgba(255,255,255,.72)}

/* ───────── Tarjetas de servicio ───────── */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:2.1rem 1.8rem;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .3s,box-shadow .3s,border-color .3s;display:flex;flex-direction:column;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto;height:4px;
  background:linear-gradient(90deg,var(--gold-300),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card-ico{
  width:64px;height:64px;border-radius:16px;display:grid;place-items:center;margin-bottom:1.3rem;
  background:linear-gradient(145deg,rgba(200,149,47,.14),rgba(10,31,68,.07));
}
.card-ico svg{width:34px;height:34px;fill:none;stroke:var(--navy-800);stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round}
.card:hover .card-ico svg{stroke:var(--gold)}
.card p{font-size:.93rem}
.card-list{margin:.4rem 0 1.4rem;display:grid;gap:.45rem}
.card-list li{position:relative;padding-left:1.5rem;font-size:.86rem;color:var(--body)}
.card-list li::before{
  content:"";position:absolute;left:0;top:.52em;width:9px;height:9px;border-radius:50%;
  border:2px solid var(--gold);
}
.card-cta{
  margin-top:auto;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--navy-800);transition:color .2s,gap .2s;
}
.card-cta:hover{color:var(--gold)}
.card-invite{
  background:linear-gradient(155deg,var(--navy-800),var(--navy-700));border-color:transparent;
  color:rgba(255,255,255,.8);justify-content:center;align-items:flex-start;
}
.card-invite h3{color:#fff;font-size:1.35rem}
.card-invite .btn{margin-top:.6rem}

/* ───────── Proceso ───────── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;counter-reset:s}
.step{
  position:relative;padding:2rem 1.5rem;border-radius:var(--radius);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  transition:background .3s,transform .3s;
}
.step:hover{background:rgba(255,255,255,.09);transform:translateY(-6px)}
.step-n{
  display:block;font-family:var(--serif);font-size:2.6rem;line-height:1;
  color:var(--gold);opacity:.85;margin-bottom:.7rem;
}
.step h3{font-size:1.02rem;text-transform:uppercase;letter-spacing:.06em}
.step p{font-size:.88rem;color:rgba(255,255,255,.72);margin:0}

/* ───────── Cotizador ───────── */
.quoter{
  display:grid;grid-template-columns:1.25fr .75fr;gap:2rem;align-items:start;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(1.6rem,3vw,2.4rem);
}
/* min-width:0 deja que la grilla se encoja: sin esto, el ancho natural
   de los <select> arrastra el bloque y la página se desplaza de lado. */
.quoter-fields{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;min-width:0}
.quoter-result{
  background:linear-gradient(160deg,var(--navy-800),var(--navy-700));color:#fff;
  border-radius:var(--radius);padding:1.8rem 1.5rem;text-align:center;box-shadow:var(--shadow);
  min-width:0;
}
.quoter-label{font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-300);margin-bottom:.4rem}
.quoter-value{font-family:var(--serif);font-size:clamp(1.35rem,3vw,1.8rem);color:#fff;margin:0 0 .2rem;line-height:1.3}
.quoter-value .sep{font-size:.85rem;color:rgba(255,255,255,.6);font-family:var(--sans)}
.quoter-uf{font-size:.82rem;color:var(--gold-300);margin-bottom:.35rem}
.quoter-fuente{
  display:inline-flex;align-items:center;gap:.4rem;margin:0 auto 1rem;
  padding:.25rem .7rem;border-radius:999px;background:rgba(255,255,255,.07);
  font-size:.68rem;color:rgba(255,255,255,.62);
}
.quoter-fuente::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);flex:none;
}
.quoter-fuente.en-vivo::before{background:#4ade80;box-shadow:0 0 0 3px rgba(74,222,128,.2)}
.quoter-note{font-size:.73rem;line-height:1.55;color:rgba(255,255,255,.62);margin-bottom:1.2rem}
.quoter-note strong{color:rgba(255,255,255,.85)}

input[type=range]{
  width:100%;-webkit-appearance:none;appearance:none;height:6px;border-radius:99px;
  background:linear-gradient(90deg,var(--gold) 0%,var(--gold) var(--pct,20%),#d7dee8 var(--pct,20%));
  outline-offset:6px;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--navy-800);
  border:3px solid var(--gold);cursor:pointer;box-shadow:0 3px 10px rgba(6,21,48,.3);
}
input[type=range]::-moz-range-thumb{
  width:22px;height:22px;border-radius:50%;background:var(--navy-800);
  border:3px solid var(--gold);cursor:pointer;
}

/* ───────── Formularios ───────── */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.3rem}
.field{display:flex;flex-direction:column;gap:.45rem;min-width:0}
.field-wide{grid-column:1/-1}
label,.label{font-size:.79rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.section-dark label,.section-dark .label{color:rgba(255,255,255,.9)}
.req{color:var(--gold)}
input[type=text],input[type=tel],input[type=email],input[type=number],select,textarea{
  width:100%;padding:.85rem 1rem;font-family:var(--sans);font-size:.94rem;color:var(--ink);
  background:#fff;border:1.5px solid var(--line);border-radius:10px;transition:border-color .2s,box-shadow .2s;
}
textarea{resize:vertical;min-height:120px}
select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%230a1f44' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 1rem center;background-size:12px;padding-right:2.4rem}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--gold);box-shadow:0 0 0 4px rgba(200,149,47,.18);
}
input.invalid,textarea.invalid{border-color:#e05a4d;box-shadow:0 0 0 4px rgba(224,90,77,.15)}
.error{font-size:.78rem;color:#ff9d92;margin:0;min-height:0}
.section:not(.section-dark) .error{color:#c9382a}

.chips{display:flex;flex-wrap:wrap;gap:.6rem}
.chip{position:relative;cursor:pointer;text-transform:none;letter-spacing:0;font-weight:500}
.chip input{position:absolute;opacity:0;width:0;height:0}
.chip span{
  display:inline-block;padding:.6rem 1.1rem;border-radius:999px;font-size:.85rem;
  background:rgba(255,255,255,.06);border:1.5px solid rgba(255,255,255,.22);color:rgba(255,255,255,.85);
  transition:all .2s;
}
:where(.section:not(.section-dark),.quoter) .chip span{
  background:#fff;border-color:var(--line);color:var(--body);
}
.chip input:checked + span{
  background:linear-gradient(135deg,var(--gold-300),var(--gold));border-color:transparent;
  color:#22190a;font-weight:700;box-shadow:0 6px 16px rgba(200,149,47,.3);
}
.chip input:focus-visible + span{outline:3px solid var(--gold);outline-offset:3px}

.check{display:flex;align-items:flex-start;gap:.7rem;text-transform:none;letter-spacing:0;
  font-weight:500;font-size:.88rem;cursor:pointer;color:rgba(255,255,255,.8)}
.check input{width:20px;height:20px;flex:none;accent-color:var(--gold);margin-top:2px}

.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.form-actions{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center;margin-top:1.8rem}
.form-status{margin-top:1rem;font-size:.9rem;min-height:1.4em;color:var(--gold-300)}
.form-status.ok{color:#7ee2a8}
.form-status.err{color:#ff9d92}

/* ───────── FAQ ───────── */
.faq{display:grid;gap:.8rem}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .25s,border-color .25s;
}
.faq details[open]{box-shadow:var(--shadow);border-color:rgba(200,149,47,.45)}
.faq summary{
  list-style:none;cursor:pointer;padding:1.2rem 3.2rem 1.2rem 1.5rem;position:relative;
  font-weight:700;color:var(--ink);font-size:1rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:1.5rem;top:50%;width:11px;height:11px;
  border-right:2.5px solid var(--gold);border-bottom:2.5px solid var(--gold);
  transform:translateY(-70%) rotate(45deg);transition:transform .28s;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-body{padding:0 1.5rem 1.4rem;font-size:.94rem}
.faq-body p{margin:0}

/* ───────── Contacto ───────── */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
.contact-card{
  display:flex;flex-direction:column;align-items:flex-start;gap:.35rem;
  padding:2rem 1.6rem;border-radius:var(--radius);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);
  transition:background .3s,transform .3s,border-color .3s;
}
a.contact-card:hover{background:rgba(255,255,255,.1);transform:translateY(-6px);border-color:rgba(200,149,47,.5)}
.contact-card .ico{width:34px;height:34px;fill:none;stroke:var(--gold);stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;margin-bottom:.7rem}
.contact-card .ico-fill{fill:var(--gold);stroke:none}
.contact-card h3{font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-300);margin-bottom:.15rem}
.contact-card p{color:#fff;font-weight:600;margin:0;font-size:.95rem;overflow-wrap:anywhere;hyphens:none}
.contact-go{margin-top:.6rem;font-size:.78rem;color:rgba(255,255,255,.55)}

/* ───────── Footer ───────── */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.6);padding-top:3.5rem}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem;padding-bottom:2.5rem}
.footer-brand img{display:block;height:96px;width:auto}
.footer-tag{font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-300);margin-top:.8rem}
.site-footer h4{color:#fff;font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:1rem}
.site-footer li{margin-bottom:.55rem;font-size:.9rem}
.site-footer a:hover{color:var(--gold-300)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:.6rem;
  padding-block:1.4rem;border-top:1px solid rgba(255,255,255,.1);font-size:.82rem;
}
.footer-bottom p{margin:0}

/* ───────── WhatsApp flotante ───────── */
.wa-float{
  position:fixed;right:20px;bottom:20px;z-index:120;
  display:flex;align-items:center;gap:.6rem;padding:12px 18px 12px 14px;
  background:#25D366;color:#06331a;border-radius:999px;font-weight:700;font-size:.86rem;
  box-shadow:0 12px 30px rgba(37,211,102,.42);transition:transform .25s,box-shadow .25s;
}
.wa-float:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 18px 40px rgba(37,211,102,.55)}
.wa-float svg{width:26px;height:26px;fill:currentColor;flex:none}

/* ───────── Animación al hacer scroll ───────── */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* ═════════ Responsivo ═════════ */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero .eyebrow,.hero-actions,.hero-stats{justify-content:center}
  .lead{margin-inline:auto}
  .hero-art{order:-1;margin-bottom:1rem}
  .blueprint{width:min(100%,300px)}
  .values-grid{grid-template-columns:1fr 1fr;gap:2rem 0}
  .value{border-left:0;padding-inline:1rem}
  .cards,.steps,.contact-grid{grid-template-columns:1fr 1fr}
  .quoter{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
}
/* El menú horizontal deja de caber junto al logo bastante antes de los
   760px, así que el desplegable entra ya en tablet. */
@media (max-width:1080px){
  html{scroll-padding-top:72px}
  .nav-toggle{display:flex}
  .nav{
    position:absolute;inset:100% 0 auto;background:var(--navy-900);
    border-bottom:1px solid rgba(255,255,255,.12);
    max-height:0;overflow:hidden;transition:max-height .35s ease;
  }
  .nav.open{max-height:520px}
  .nav ul{flex-direction:column;align-items:stretch;gap:0;padding:.8rem 22px 1.4rem}
  .nav a{padding:.95rem .4rem;font-size:.85rem;border-bottom:1px solid rgba(255,255,255,.07)}
  .nav a.btn{margin-top:.9rem;justify-content:center;border-bottom:0}
}
@media (max-width:760px){
  .cards,.steps,.contact-grid,.form-grid,.quoter-fields{grid-template-columns:1fr}
  .field-wide{grid-column:auto}
  .footer-inner{grid-template-columns:1fr;gap:2rem}
  .form-actions .btn{width:100%}
  .wa-label{display:none}
  .wa-float{padding:14px;border-radius:50%}
  .hero-stats{gap:1.4rem}
}
@media (max-width:430px){
  .values-grid{grid-template-columns:1fr;gap:2.2rem 0}
  .value{padding-inline:.5rem}
  /* En pantallas angostas el logo y el nombre compiten con el botón de menú */
  .brand-mark{height:42px}
  .brand-name{font-size:.82rem;letter-spacing:.24em}
  .brand-tag{font-size:.48rem;letter-spacing:.18em}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

@media print{
  .site-header,.wa-float,.form-actions,.hero-art{display:none}
  body{color:#000}
  .section-dark{background:#fff;color:#000}
}