/* ===================================================
   DESIGN TOKENS — paleta de marca "CONCRETO · Fuerza que construye"
   =================================================== */
:root{
  --red-700:#d63b2d;        /* Rojo Concreto — primario (CTA, acentos) */
  --red-800:#b32e22;        /* hover / variante oscura */
  --red-100:#fbe6e3;        /* fondo suave rojo */

  --slate-900:#2b2b2b;      /* footer / topbar (basado en gris secundario #4A4A4A, oscurecido para contraste) */
  --slate-700:#4a4a4a;      /* gris secundario de marca */
  --gray-400:#b2b0ad;       /* Gris Concreto */
  --gray-200:#e6e6e6;       /* gris claro secundario */

  --ink-900:#212121;
  --ink-700:#4a4a4a;
  --ink-500:#767676;
  --line:#e2e0dd;
  --surface:#ffffff;
  --surface-alt:#f7f6f5;

  --font:'Montserrat', sans-serif;

  --radius-sm:6px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-card:0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:0 20px 48px rgba(43,43,43,.16);

  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink-900);
  background:var(--surface);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none}

/* ===== PRELOADER ===== */
#preloader{
  position:fixed;inset:0;z-index:9999;
  background:var(--surface);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .45s ease, visibility .45s ease;
}
#preloader.hide{opacity:0;visibility:hidden;pointer-events:none}
.preloader-inner{display:flex;flex-direction:column;align-items:center;gap:22px}
.preloader-logo{width:150px;height:auto;filter:drop-shadow(0 6px 16px rgba(0,0,0,.12))}
.preloader-blocks{display:flex;gap:8px;align-items:flex-end;height:38px}
.preloader-blocks span{
  width:11px;border-radius:2px;background:var(--red-700);
  animation:preloader-rise 1.2s ease-in-out infinite;
}
.preloader-blocks span:nth-child(1){height:15px;animation-delay:0s}
.preloader-blocks span:nth-child(2){height:24px;animation-delay:.12s}
.preloader-blocks span:nth-child(3){height:38px;animation-delay:.24s}
.preloader-blocks span:nth-child(4){height:24px;animation-delay:.36s}
.preloader-blocks span:nth-child(5){height:15px;animation-delay:.48s}
@keyframes preloader-rise{
  0%,100%{transform:scaleY(.55);opacity:.55}
  50%{transform:scaleY(1);opacity:1}
}
.preloader-caption{
  font-size:12px;font-weight:700;letter-spacing:2.5px;text-transform:uppercase;color:var(--ink-500);
}
@media (prefers-reduced-motion:reduce){
  .preloader-blocks span{animation:none;opacity:.85}
}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

h1,h2,h3,h4{font-family:var(--font);font-weight:700;line-height:1.1;color:var(--ink-900)}
h2{font-size:clamp(26px,3.6vw,36px);font-weight:800}
h3{font-size:19px;font-weight:700}

.eyebrow{
  display:block;font-weight:700;font-size:13px;letter-spacing:2.5px;
  text-transform:uppercase;color:var(--red-700);margin-bottom:10px;
}
.eyebrow-dark{color:var(--red-700)}
.section-head{max-width:640px;margin:0 auto 44px;text-align:center}
.section-head.light h2{color:#fff}
.section-head.light .eyebrow{color:#ff8b7a}
.section-sub{color:var(--ink-500);margin-top:12px;font-size:15.5px}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);font-weight:700;font-size:14px;
  letter-spacing:.4px;transition:transform .15s ease, box-shadow .15s ease, background .15s ease, opacity .15s;
  white-space:nowrap;
}
.btn-primary{background:var(--red-700);color:#fff}
.btn-primary:hover{background:var(--red-800)}
.btn-accent{background:var(--red-700);color:#fff;border-radius:var(--radius-sm);text-transform:uppercase;font-size:13px;letter-spacing:1px}
.btn-accent:hover{background:var(--red-800)}
.btn-outline{border:1.5px solid var(--red-700);color:var(--red-700);background:transparent;border-radius:var(--radius-pill);padding:11px 24px}
.btn-outline:hover{background:var(--red-700);color:#fff}
.btn-light{background:#fff;color:var(--red-700);border-radius:var(--radius-sm)}
.btn-light:hover{background:var(--surface-alt)}
.btn-lg{padding:15px 28px;font-size:15px}
.btn-block{width:100%}

/* ===== TOPBAR ===== */
.topbar{background:var(--slate-900)}
.topbar-inner{display:flex;justify-content:flex-end;height:34px;align-items:center}
.topbar-nav{display:flex;gap:22px}
.topbar-nav a{font-size:12.5px;color:rgba(255,255,255,.75);font-weight:500}
.topbar-nav a:hover{color:#fff}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s}
.header-inner{display:flex;align-items:center;gap:28px;height:76px}
.logo{display:flex;align-items:center;gap:10px}
.logo-img{height:64px;width:auto;display:block}
.footer-logo-chip{background:#fff;padding:10px 18px;border-radius:10px;display:inline-flex}
.footer-logo-img{height:64px}

.main-nav{display:flex;gap:28px;flex:1}
.main-nav a{font-weight:600;font-size:14.5px;color:var(--ink-700);transition:color .15s}
.main-nav a:hover{color:var(--red-700)}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:26px}
.nav-toggle span{height:2px;background:var(--ink-900);border-radius:2px}

/* ===== TAGS DESTACADOS ===== */
.breadcrumb{background:var(--surface-alt);border-bottom:1px solid var(--line)}
.breadcrumb-inner{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px 10px;
  padding:12px 24px;font-size:13px;color:var(--ink-700);
}
.breadcrumb-inner span:not(.sep){font-weight:700;color:var(--ink-900)}
.breadcrumb-inner .sep{color:var(--red-700);font-weight:600}

/* ===== HERO ===== */
.hero{position:relative;height:420px;overflow:hidden;background:var(--slate-900)}
.hero-media{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.hero-blob{
  position:absolute;inset:0;display:flex;align-items:center;z-index:2;
}
.hero-blob-inner{display:flex;flex-direction:column;align-items:center;gap:22px;max-width:520px;text-align:center}
.hero-blob-inner .eyebrow{color:#fff;font-size:14px;text-shadow:0 2px 10px rgba(0,0,0,.55)}
.hero-blob-inner h1{color:#fff;font-size:clamp(46px,6vw,72px);font-weight:800;text-shadow:0 4px 18px rgba(0,0,0,.55)}
.hero-blob-inner .btn-accent{background:#fff;color:var(--red-700)}
.hero-blob-inner .btn-accent:hover{background:#fbe6e3}

/* ===== INTRO ===== */
.intro{padding:80px 0}
.intro-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.intro-text h2{margin-bottom:20px}
.intro-text p{color:var(--ink-700);margin-bottom:16px;font-size:15.5px}
.intro-media{
  aspect-ratio:4/3;border-radius:var(--radius-md);
  width:100%;height:100%;object-fit:cover;
  box-shadow:var(--shadow-card);
}

/* ===== PRODUCTOS ===== */
.productos{padding:20px 0 100px}
.search-row{
  position:relative;max-width:340px;margin:0 auto 28px;
}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:14px;opacity:.5}
.search-row input{
  width:100%;padding:11px 14px 11px 38px;border:1px solid var(--line);border-radius:var(--radius-pill);
  font-family:var(--font);font-size:14px;
}
.search-row input:focus{outline:none;border-color:var(--red-700)}

.filters{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:44px}
.filter-btn{
  padding:9px 20px;border-radius:var(--radius-pill);border:1px solid var(--red-700);
  font-weight:600;font-size:13.5px;color:var(--red-700);background:#fff;transition:all .15s;
}
.filter-btn:hover{background:var(--red-100)}
.filter-btn.active{background:var(--red-700);border-color:var(--red-700);color:#fff}

.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:22px}
.product-card{
  background:#fff;border:.8px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);transition:transform .2s ease, box-shadow .2s ease;
}
.product-card:hover{transform:translateY(-5px);box-shadow:0 14px 28px rgba(43,43,43,.16)}
.product-card.hide{display:none}

.product-media{position:relative;aspect-ratio:4/3;background:var(--surface-alt);overflow:hidden}
.product-media .texture{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.product-card:hover .texture{transform:scale(1.05)}
.product-badge{
  position:absolute;top:10px;left:10px;background:var(--slate-700);color:#fff;
  font-size:11.5px;font-weight:700;letter-spacing:.4px;padding:4px 10px;border-radius:4px;
  text-transform:uppercase;
}
.product-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.product-body h3{font-size:18px;margin-bottom:8px;color:var(--ink-900)}
.product-body p{color:var(--ink-500);font-size:13.5px;flex:1;margin-bottom:16px}
.card-btn{
  display:block;text-align:center;background:var(--red-700);color:#fff;
  padding:10px;border-radius:var(--radius-sm);font-weight:700;font-size:13.5px;transition:background .15s;
}
.card-btn:hover{background:var(--red-800)}

/* ===== POR QUÉ ===== */
.por-que{padding:96px 0;background:linear-gradient(160deg,var(--slate-700),var(--slate-900));color:#fff;position:relative;overflow:hidden}
.ventajas-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:32px;position:relative}
.ventaja-num{display:block;font-size:38px;font-weight:800;color:#ef7364;margin-bottom:10px}
.ventaja h3{color:#fff;margin-bottom:8px}
.ventaja p{color:rgba(255,255,255,.72);font-size:14px}

/* ===== COTIZA ===== */
.cotiza{padding:100px 0;background:var(--surface-alt)}
.cotiza .section-head h2{color:var(--ink-900)}
.cotiza-form{
  max-width:760px;margin:0 auto;background:#fff;padding:44px;border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);
}
.form-block-title{font-size:15px;color:var(--red-700);text-transform:uppercase;letter-spacing:.6px;margin-bottom:18px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.form-block-title:not(:first-child){margin-top:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;font-size:13px;color:var(--ink-700);margin-bottom:6px}
.form-group label span{color:var(--red-700)}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  font-family:var(--font);font-size:14px;color:var(--ink-900);background:#fff;transition:border-color .15s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--red-700)}
.checkbox-row{display:flex;gap:10px;align-items:flex-start;margin:20px 0;font-size:12.5px;color:var(--ink-500)}
.checkbox-row input{margin-top:3px}
.form-success{display:none;margin-top:16px;text-align:center;color:var(--red-700);font-weight:600;font-size:14px}
.form-success.show{display:block}

/* ===== FAQ ===== */
.faq{padding:100px 0}
.accordion{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.accordion-item{border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.accordion-trigger{
  width:100%;display:flex;justify-content:space-between;align-items:center;
  padding:18px 22px;font-weight:600;font-size:15px;color:var(--ink-900);text-align:left;
}
.accordion-trigger span{color:var(--red-700);font-size:20px;transition:transform .2s;flex-shrink:0;margin-left:16px}
.accordion-item.open .accordion-trigger span{transform:rotate(45deg)}
.accordion-panel{max-height:0;overflow:hidden;transition:max-height .25s ease}
.accordion-panel p{padding:0 22px 18px;color:var(--ink-500);font-size:14px}

/* ===== CONTACTO ===== */
.contacto-section{padding:0 0 100px}
.contacto-inner{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card)}
.contacto-media{
  min-height:340px;width:100%;height:100%;object-fit:cover;display:block;
}
.contacto-card{background:#fff;padding:48px;display:flex;flex-direction:column;justify-content:center;border:1px solid var(--line);border-left:none}
.contacto-card h2{margin-bottom:22px}
.contacto-list{display:flex;flex-direction:column;gap:14px;margin-bottom:28px}
.contacto-list li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--ink-700)}
.contacto-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ===== UBICACIONES BANNER ===== */
.ubicaciones-banner{background:linear-gradient(115deg,var(--slate-900),var(--red-700));padding:52px 0}
.ubicaciones-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ubicaciones-banner h2{color:#fff;margin-bottom:6px}
.ubicaciones-banner p{color:rgba(255,255,255,.8);font-size:14.5px}

/* ===== FOOTER ===== */
.site-footer{background:var(--slate-900);color:rgba(255,255,255,.68)}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:70px 24px 44px}
.footer-tag{margin-top:16px;font-size:13.5px;line-height:1.7;max-width:320px}
.footer-label{margin-top:24px;font-size:13px;font-weight:700;color:#fff}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700}
.footer-col a{display:block;font-size:13.5px;margin-bottom:12px;color:rgba(255,255,255,.68);transition:color .15s}
.footer-col a:hover{color:#fff}
.social-row{display:flex;gap:10px;margin-top:12px}
.social-row a{
  width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;font-size:13px;margin:0;color:#fff;
}
.social-row a:hover{background:var(--red-700)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.footer-bottom-inner p{font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom-links{display:flex;gap:10px;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom-links a{color:rgba(255,255,255,.5)}
.footer-bottom-links a:hover{color:#fff}

/* ===== BOTONES FLOTANTES ===== */
.floating-actions{
  position:fixed;right:22px;bottom:22px;z-index:200;
  display:flex;flex-direction:column;gap:14px;
}
.fab{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(0,0,0,.25);color:#fff;transition:transform .15s ease, box-shadow .15s ease;
}
.fab svg{width:26px;height:26px}
.fab:hover{transform:scale(1.08);box-shadow:0 10px 24px rgba(0,0,0,.32)}
.fab-call{background:var(--red-700)}
.fab-call:hover{background:var(--red-800)}
.fab-whatsapp{background:#25d366}
.fab-whatsapp:hover{background:#1ebe5a}

@media (max-width:600px){
  .floating-actions{right:16px;bottom:16px;gap:12px}
  .fab{width:50px;height:50px}
  .fab svg{width:23px;height:23px}
}

/* ===== RESPONSIVE ===== */
@media (max-width:960px){
  .intro-inner{grid-template-columns:1fr}
  .intro-media{order:-1}
  .contacto-inner{grid-template-columns:1fr}
  .contacto-media{min-height:220px}
  .contacto-card{border-left:1px solid var(--line);border-top:none}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .topbar-nav{gap:14px}
  .hide-sm{display:none}
  .main-nav{
    position:fixed;top:110px;left:0;right:0;background:#fff;
    flex-direction:column;padding:20px 24px;gap:0;
    transform:translateY(-150%);transition:transform .25s ease;
    border-bottom:1px solid var(--line);z-index:99;
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
  .header-inner{justify-content:space-between}
  .header-inner .btn-primary{display:none}
  .hero{height:320px}
  .intro{padding:40px 0}
  .productos{padding:10px 0 100px}
  .form-row{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;padding:56px 24px 32px}
  .ventajas-grid{grid-template-columns:1fr 1fr}
}