/* Materiales y Techos — estilos 2026 */
:root{
  --amarillo:#f4c016;--amarillo-2:#e0ad00;
  --grafito:#1c1d1f;--grafito-2:#25272a;--grafito-3:#34363a;
  --fondo:#eef0f2;--blanco:#fff;--texto:#1c1d1f;--suave:#5b6068;--linea:#d6d9dd;
  --verde-wa:#25d366;
  --fuente:"Archivo",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --ancho:1240px;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);
}
*,*::before,*::after{box-sizing:inherit}
html{background:var(--grafito);scroll-padding-top:calc(90px + env(safe-area-inset-top,0px))}
body{margin:0;font-family:var(--fuente);color:var(--texto);background:var(--fondo);line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--amarillo);outline-offset:3px}
.envoltura{width:min(var(--ancho),100% - 48px);margin-inline:auto}
.saltar{position:absolute;left:-999px;top:0;background:var(--amarillo);color:#000;padding:10px 16px;z-index:100}
.saltar:focus{left:12px;top:12px}

/* ---------- Encabezado ---------- */
.encabezado{background:var(--grafito);color:#fff;position:sticky;top:0;z-index:40;border-bottom:1px solid var(--grafito-3)}
.encabezado .envoltura{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.marca{display:flex;align-items:center;gap:14px;text-decoration:none;flex:none}
.marca img{width:74px}
.marca-texto{display:flex;flex-direction:column;line-height:1}
.marca-texto strong{font-stretch:118%;font-weight:800;font-size:1.22rem;letter-spacing:-.01em}
.marca-texto span{font-size:.78rem;color:#a9adb3;margin-top:5px}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;align-items:center}
.nav a{display:block;text-decoration:none;font-weight:600;font-size:.93rem;padding:10px 12px;color:#d9dcdf;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.nav a:hover{color:#fff;border-bottom-color:var(--amarillo)}
.nav a[aria-current="page"]{color:#fff;border-bottom-color:var(--amarillo)}
.nav .nav-contacto{background:var(--amarillo);color:#000;border:0;margin-left:8px;padding:10px 16px}
.nav .nav-contacto:hover{background:#fff;color:#000}
.menu-btn{display:none;background:none;border:1.5px solid #555;color:#fff;width:46px;height:46px;cursor:pointer;place-items:center}
.menu-btn svg{width:22px;height:22px}
@media (max-width:1060px){
  .menu-btn{display:grid}
  .nav{position:absolute;left:0;right:0;top:100%;background:var(--grafito);border-bottom:1px solid var(--grafito-3);display:none}
  .nav.abierto{display:block}
  .nav ul{flex-direction:column;align-items:stretch;padding:8px 24px 20px}
  .nav a{padding:14px 4px;border-bottom:1px solid var(--grafito-3);font-size:1.05rem}
  .nav .nav-contacto{margin:14px 0 0;text-align:center}
}
@media (max-width:520px){.marca img{width:58px}.marca-texto strong{font-size:1.05rem}}

/* ---------- Portada (inicio) ---------- */
.portada{position:relative;color:#fff;background:var(--grafito);isolation:isolate;overflow:hidden}
.portada-foto{position:absolute;inset:0;z-index:-1;background:url("../assets/img/fondo.webp") 70% center/cover no-repeat}
.portada-foto::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(28,29,31,.95) 0%,rgba(28,29,31,.75) 50%,rgba(28,29,31,.25) 100%)}
.portada .envoltura{padding-block:clamp(72px,11vw,140px) clamp(64px,9vw,112px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:.9rem;color:#d9dcdf;margin:0 0 22px}
.eyebrow::before{content:"";width:10px;height:10px;background:var(--amarillo)}
.portada h1{margin:0;max-width:15ch;font-stretch:118%;font-weight:800;font-size:clamp(2.4rem,6.2vw,5.2rem);line-height:.96;letter-spacing:-.02em;text-wrap:balance}
.portada p.sub{margin:26px 0 0;max-width:52ch;color:#c9ccd0;font-size:clamp(1.02rem,1.5vw,1.2rem)}
.acciones{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}

/* ---------- Botones ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:inherit;font-weight:700;font-stretch:106%;font-size:1rem;text-decoration:none;padding:14px 22px;border:2px solid transparent;cursor:pointer;transition:background-color .15s,color .15s,border-color .15s;line-height:1.2}
.btn svg,.btn img{width:20px;height:20px;flex:none}
.btn-amarillo{background:var(--amarillo);color:#000;border-color:var(--amarillo)}
.btn-amarillo:hover{background:transparent;color:var(--amarillo)}
.btn-wa{background:var(--verde-wa);color:#073b1d;border-color:var(--verde-wa)}
.btn-wa:hover{background:#1fb859;border-color:#1fb859}
.btn-borde{border-color:currentColor;background:transparent}
.btn-borde:hover{background:var(--grafito);color:#fff;border-color:var(--grafito)}
.portada .btn-borde:hover,.cta .btn-borde:hover{background:#fff;color:#000;border-color:#fff}
.btn-oscuro{background:var(--grafito);color:#fff;border-color:var(--grafito)}
.btn-oscuro:hover{background:transparent;color:var(--grafito)}

/* ---------- Secciones ---------- */
.seccion{padding-block:clamp(56px,8vw,96px)}
.titulo-sec{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.titulo-sec h2{margin:0;font-stretch:112%;font-weight:800;font-size:clamp(1.8rem,3.6vw,2.8rem);line-height:1.02;letter-spacing:-.015em}
.titulo-sec p{margin:0;color:var(--suave);max-width:48ch}

/* Tarjetas */
.rejilla{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px;list-style:none;margin:0;padding:0}
.tarjeta{display:flex;flex-direction:column;height:100%;background:var(--blanco);text-decoration:none;border:1px solid var(--linea);transition:border-color .2s,transform .2s,box-shadow .2s}
.tarjeta:hover{border-color:var(--grafito);transform:translateY(-3px);box-shadow:0 12px 28px rgba(0,0,0,.08)}
.tarjeta-img{aspect-ratio:1/1;background:#f6f7f8;display:grid;place-items:center;padding:18px;border-bottom:1px solid var(--linea)}
.tarjeta-img img{width:100%;height:100%;object-fit:contain}
.tarjeta-cuerpo{padding:18px 20px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex:1}
.tarjeta h3{margin:0;font-stretch:110%;font-weight:750;font-size:1.15rem;line-height:1.15}
.tarjeta .flecha{width:36px;height:36px;flex:none;display:grid;place-items:center;border:1.5px solid var(--grafito);transition:background-color .2s,color .2s}
.tarjeta .flecha svg{width:15px;height:15px}
.tarjeta:hover .flecha{background:var(--amarillo);border-color:var(--amarillo)}
.tarjeta-cat .tarjeta-cuerpo{flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:8px}
.tarjeta-cat .tarjeta-cuerpo p{margin:0;color:var(--suave);font-size:.93rem}
.tarjeta-cat h3{font-size:1.35rem}

/* Destacado */
.destacado{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center;background:var(--blanco);border:1px solid var(--linea);padding:clamp(24px,4vw,48px)}
.destacado img{width:100%;max-width:460px;margin-inline:auto}
.destacado h2{margin:0 0 14px;font-stretch:112%;font-weight:800;font-size:clamp(1.7rem,3.2vw,2.5rem);line-height:1.04}
.destacado p{color:var(--suave);margin:0 0 12px}
.ventajas{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--linea);border-bottom:1px solid var(--linea);list-style:none;margin:0;padding:0}
.ventajas li{padding:26px 24px;display:flex;gap:14px;align-items:flex-start}
.ventajas li + li{border-left:1px solid var(--linea)}
.ventajas svg{width:30px;height:30px;flex:none;color:var(--grafito)}
.ventajas strong{display:block;font-stretch:108%;font-size:1.05rem}
.ventajas span{color:var(--suave);font-size:.95rem}

/* ---------- Encabezado de página interior ---------- */
.cabecera{background:var(--grafito);color:#fff;padding-block:40px 44px;border-bottom:6px solid var(--amarillo)}
.migas{font-size:.88rem;color:#a9adb3;margin:0 0 16px}
.migas ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.migas li+li::before{content:"/";margin-right:8px;color:#6b7076}
.migas a{text-decoration:none;color:#d9dcdf}
.migas a:hover{color:var(--amarillo)}
.cabecera h1{margin:0;font-stretch:115%;font-weight:800;font-size:clamp(2rem,5vw,3.6rem);line-height:1;letter-spacing:-.015em;text-wrap:balance}
.cabecera p{margin:14px 0 0;color:#c9ccd0;max-width:60ch}

/* ---------- Producto ---------- */
.producto{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(28px,5vw,64px);align-items:start}
.galeria{display:grid;gap:16px;position:sticky;top:110px}
.galeria figure{margin:0;background:var(--blanco);border:1px solid var(--linea);padding:clamp(16px,3vw,32px);display:grid;place-items:center}
.galeria img{width:100%;max-height:520px;object-fit:contain}
.galeria.doble{grid-template-columns:1fr}
.info .cat{display:inline-block;font-weight:600;font-size:.88rem;color:var(--suave);text-decoration:none;margin-bottom:10px}
.info .cat:hover{color:var(--texto)}
.texto{font-size:1.06rem}
.texto p{margin:0 0 14px}
.texto h2{font-stretch:110%;font-weight:750;font-size:1.35rem;margin:28px 0 12px;line-height:1.15}
.texto h3{font-stretch:108%;font-weight:700;font-size:1.08rem;margin:0 0 8px}
.texto ul{margin:0 0 16px;padding:0;list-style:none;border-top:1px solid var(--linea)}
.texto li{padding:10px 0 10px 24px;border-bottom:1px solid var(--linea);position:relative}
.texto li::before{content:"";position:absolute;left:2px;top:18px;width:8px;height:8px;background:var(--amarillo)}
.texto .specs{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:12px}
.texto a{color:inherit;text-decoration-color:var(--amarillo);text-decoration-thickness:2px;text-underline-offset:3px}
.caja-cotiza{margin-top:28px;background:var(--blanco);border:1px solid var(--linea);padding:22px}
.caja-cotiza p{margin:0 0 14px;font-weight:600}
.caja-cotiza .acciones{margin-top:0}
.tabla-sec{margin-top:clamp(40px,6vw,72px)}
.tabla-sec h2{font-stretch:110%;font-weight:800;font-size:clamp(1.4rem,2.6vw,2rem);margin:0 0 18px}
.tabla-scroll{overflow-x:auto;background:var(--blanco);border:1px solid var(--linea)}
table{border-collapse:collapse;width:100%;min-width:560px;font-variant-numeric:tabular-nums}
th,td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--linea);font-size:.97rem;white-space:nowrap}
thead th{background:var(--grafito);color:#fff;font-weight:650;position:sticky;top:0}
tbody tr:nth-child(even){background:#f6f7f8}
tbody tr:hover{background:#fff6d6}
td.num,th.num{text-align:right}

/* Ficha */
.visor{background:var(--blanco);border:1px solid var(--linea)}
.visor iframe{display:block;width:100%;height:min(80vh,900px);border:0}
.visor-barra{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--linea)}
.visor-barra strong{font-stretch:108%}
.lista-fichas{list-style:none;margin:0;padding:0;border-top:1px solid var(--linea)}
.lista-fichas li{border-bottom:1px solid var(--linea)}
.lista-fichas a{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 8px;text-decoration:none;font-stretch:110%;font-weight:700;font-size:clamp(1.1rem,2vw,1.4rem);transition:background-color .15s}
.lista-fichas a:hover{background:var(--blanco)}
.lista-fichas small{font-stretch:100%;font-weight:500;font-size:.9rem;color:var(--suave)}

/* ---------- Contacto ---------- */
.contacto-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(28px,5vw,64px);align-items:start}
.datos{list-style:none;margin:0;padding:0;border-top:1px solid var(--linea)}
.datos li{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:18px 0;border-bottom:1px solid var(--linea)}
.datos .dato-etq{display:block;font-size:.85rem;color:var(--suave);font-weight:500}
.datos .dato-val{font-stretch:110%;font-weight:750;font-size:clamp(1.2rem,2.2vw,1.6rem);text-decoration:none;white-space:nowrap}
.datos .btn{padding:9px 14px;font-size:.92rem}
.formulario{background:var(--blanco);border:1px solid var(--linea);padding:clamp(22px,4vw,40px)}
.formulario h2{margin:0 0 20px;font-stretch:112%;font-weight:800;font-size:1.7rem}
.campo{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.campo label{font-weight:600;font-size:.93rem}
.campo input,.campo select,.campo textarea{font:inherit;font-size:1rem;padding:12px 14px;border:1.5px solid var(--linea);background:#fbfbfc;color:var(--texto);border-radius:0;width:100%}
.campo input:focus,.campo select:focus,.campo textarea:focus{outline:none;border-color:var(--grafito);background:#fff}
.campo textarea{min-height:140px;resize:vertical}
.fila-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.oculto{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.nota{font-size:.85rem;color:var(--suave);margin:4px 0 18px}

/* ---------- Franja de cotización ---------- */
.cta{background:var(--grafito);color:#fff}
.cta .envoltura{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center;padding-block:clamp(48px,7vw,80px)}
.cta h2{margin:0;font-stretch:115%;font-weight:800;font-size:clamp(1.8rem,4vw,3rem);line-height:1;letter-spacing:-.015em}
.cta p{margin:12px 0 0;color:#c9ccd0}
.cta .acciones{justify-content:flex-end;margin:0}
.cta .acciones .btn{min-width:260px}

/* ---------- Pie ---------- */
.pie{background:#141517;color:#9ea3a9;padding-block:56px 110px;font-size:.95rem}
.pie-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px}
.pie h2{color:#fff;font-size:.95rem;font-weight:700;margin:0 0 14px;letter-spacing:.02em}
.pie ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.pie a{text-decoration:none;color:#d9dcdf}
.pie a:hover{color:var(--amarillo)}
.pie .marca img{width:90px}
.pie-desc{margin:16px 0 0;max-width:34ch}
.pie-legal{margin-top:40px;padding-top:22px;border-top:1px solid #2c2e31;font-size:.85rem;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- Botones flotantes ---------- */
.flotantes{position:fixed;z-index:50;right:20px;bottom:calc(20px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.flotante{width:60px;height:60px;display:grid;place-items:center;text-decoration:none;position:relative;transition:transform .15s;filter:drop-shadow(0 6px 14px rgba(0,0,0,.3))}
.flotante:hover{transform:scale(1.07)}
.flotante.wa img{width:60px;height:60px;border-radius:14px}
.flotante.tel{background:var(--amarillo);color:#000;border-radius:50%;display:none}
.flotante.tel svg{width:28px;height:28px}
.flotante .etiqueta{position:absolute;right:74px;top:50%;transform:translateY(-50%);white-space:nowrap;background:#fff;color:#1c1d1f;font-size:.9rem;font-weight:600;padding:8px 14px;opacity:0;pointer-events:none;transition:opacity .15s}
.flotante:hover .etiqueta,.flotante:focus-visible .etiqueta{opacity:1}

/* ---------- Responsivo ---------- */
@media (max-width:900px){
  .flotante.tel{display:grid}
  .flotante .etiqueta{display:none}
  .flotante,.flotante.wa img{width:56px;height:56px}
  .producto,.destacado,.contacto-grid,.cta .envoltura{grid-template-columns:1fr}
  .galeria{position:static}
  .galeria.doble{grid-template-columns:1fr 1fr}
  .cta .acciones{justify-content:flex-start}
  .pie-grid{grid-template-columns:1fr 1fr}
  .ventajas{grid-template-columns:1fr}
  .ventajas li + li{border-left:0;border-top:1px solid var(--linea)}
}
@media (max-width:560px){
  .envoltura{width:min(var(--ancho),100% - 40px)}
  .rejilla{grid-template-columns:1fr 1fr;gap:12px}
  .tarjeta-img{padding:10px}
  .tarjeta-cuerpo{padding:12px 12px 14px}
  .tarjeta h3,.tarjeta-cat h3{font-size:1rem}
  .tarjeta .flecha{display:none}
  .tarjeta-cat .tarjeta-cuerpo p{display:none}
  .galeria.doble{grid-template-columns:1fr}
  .fila-2,.texto .specs{grid-template-columns:1fr}
  .pie-grid{grid-template-columns:1fr}
  .portada-foto::after{background:linear-gradient(180deg,rgba(28,29,31,.75),rgba(28,29,31,.95))}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.encabezado,.flotantes,.cta,.pie{display:none}}