/* =========================================================
   Nerbioi Valves — componentes
   ========================================================= */

/* ---------------- HERO: foto a sangre ---------------- */
.hero{
  position:relative;
  min-height:100svh;
  display:flex; align-items:flex-end;
  padding-top:var(--nav-h);
  overflow:hidden;
  background:var(--ink);
  isolation:isolate;
}
.hero__ph{ position:absolute; inset:0; z-index:0; }
.hero__ph img{
  width:100%; height:100%; object-fit:cover; object-position:70% 50%;
  /* la foto viene calida de fabrica; se enfria para que case con el azul */
  filter:saturate(.72) contrast(1.06) brightness(.92) hue-rotate(-6deg);
}
/* Velo en dos capas: uno lateral que abre hueco de lectura a la izquierda
   y otro inferior que asienta la barra de datos. Sin ellos el titular
   se pierde sobre el metal. */
.hero__ph::after{
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(100deg, rgba(8,11,15,.96) 0%, rgba(8,11,15,.88) 26%,
                    rgba(8,11,15,.55) 48%, rgba(8,11,15,.12) 70%, rgba(8,11,15,.34) 100%),
    linear-gradient(to top, rgba(8,11,15,.92) 0%, rgba(8,11,15,0) 42%);
}
@media (max-width:820px){
  .hero__ph img{ object-position:62% 50%; }
  .hero__ph::after{
    background:linear-gradient(to top, rgba(8,11,15,.97) 26%, rgba(8,11,15,.72) 58%, rgba(8,11,15,.34) 100%);
  }
}

.hero__in{
  position:relative; z-index:2;
  width:100%; max-width:var(--maxw); margin-inline:auto;
  padding:0 var(--gut) clamp(40px,7vh,86px);
}
.hero h1{ max-width:14ch; text-wrap:balance; }
.hero h1 em{ font-style:normal; color:var(--blue); display:block; }
.hero__lede{ margin-top:1.5rem; max-width:44ch; color:var(--mist); }
.hero__acts{ display:flex; flex-wrap:wrap; gap:12px; margin-top:2.2rem; }

.hero__meta{
  position:relative; z-index:2;
  border-top:1px solid var(--ink-line);
  background:rgba(8,11,15,.72);
  backdrop-filter:blur(8px);
}
.hero__meta ul{
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns:repeat(4,1fr);
  max-width:var(--maxw); margin-inline:auto;
}
.hero__meta li{ padding:18px var(--gut); border-left:1px solid var(--ink-line); }
.hero__meta li:first-child{ border-left:0; }
.hero__meta b{
  display:block; font-family:var(--ff-display);
  font-variation-settings:'wdth' 112,'wght' 700;
  font-size:clamp(1.15rem,2vw,1.75rem); color:var(--paper); line-height:1;
}
.hero__meta span{
  display:block; margin-top:6px; font-family:var(--ff-mono); font-size:.64rem;
  letter-spacing:.14em; text-transform:uppercase; color:var(--steel);
}
@media (max-width:760px){
  .hero__meta ul{ grid-template-columns:repeat(2,1fr); }
  .hero__meta li:nth-child(3){ border-left:0; }
  .hero__meta li:nth-child(n+3){ border-top:1px solid var(--ink-line); }
}

/* ------------- EL CORTE: zoom por scroll sobre la seccion ------------- */
.cut{ background:var(--ink-2); position:relative; }
.cut__rail{ position:relative; }
.cut__sticky{
  position:sticky; top:var(--nav-h);
  height:calc(100svh - var(--nav-h));
  overflow:hidden;
}
.cut__stage{ position:absolute; inset:0; }
.cut__steps{ position:relative; z-index:4; pointer-events:none; }
.cut__step{
  min-height:100svh; display:flex; align-items:center;
  padding-inline:var(--gut); max-width:var(--maxw); margin-inline:auto;
}
.cut__card{
  pointer-events:auto; width:min(400px,100%);
  background:rgba(8,11,15,.86); backdrop-filter:blur(12px);
  border:1px solid var(--ink-line); border-left:2px solid var(--blue);
  padding:26px 28px;
  opacity:0; transform:translateY(16px);
  transition:opacity .55s var(--ease), transform .55s var(--ease);
}
.cut__step.is-active .cut__card{ opacity:1; transform:none; }
.cut__card h3{ margin:.2rem 0 .7rem; }
.cut__card p{ color:var(--steel-lt); font-size:.95rem; margin:0; }
.cut__spec{ margin-top:16px; padding-top:14px; border-top:1px solid var(--ink-line); display:flex; flex-wrap:wrap; gap:8px; }
.cut__spec span{ font-family:var(--ff-mono); font-size:.66rem; letter-spacing:.08em; color:var(--mist); border:1px solid var(--ink-line); padding:4px 8px; }

/* retículo de plano sobre la pieza, muy tenue */
.cut__grid{
  position:absolute; inset:0; z-index:2; pointer-events:none; opacity:.5;
  background-image:
    linear-gradient(to right, rgba(62,143,212,.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(62,143,212,.14) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 50% 50%, #000 12%, transparent 72%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 50%, #000 12%, transparent 72%);
}

/* etiquetas ancladas en % sobre la imagen */
.cut__pins{ position:absolute; inset:0; z-index:3; pointer-events:none; }
.pin{
  position:absolute; transform:translate(-50%,-50%);
  font-family:var(--ff-mono); font-size:.66rem; letter-spacing:.09em;
  text-transform:uppercase; color:var(--paper); white-space:nowrap;
  display:flex; align-items:center; gap:8px;
  opacity:0; transition:opacity .45s var(--ease);
  text-shadow:0 1px 10px rgba(8,11,15,.95), 0 0 3px rgba(8,11,15,.9);
}
.pin.on{ opacity:1; }
.pin::before{
  content:""; width:7px; height:7px; flex:none;
  border:1px solid var(--blue); background:rgba(62,143,212,.3);
  transform:rotate(45deg);
}
@media (max-width:900px){
  .cut__sticky{ height:58svh; top:calc(var(--nav-h) + 8px); }
  .cut__step{ min-height:auto; padding-block:30vh 8vh; }
  .cut__card{ width:100%; }
  .cut__img{ width:150%; }
  .pin{ font-size:.6rem; }
}

/* ---------------- TARJETAS DE FAMILIA ---------------- */
.fam{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--ink-line); border:1px solid var(--ink-line); }
@media (max-width:1040px){ .fam{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .fam{ grid-template-columns:1fr; } }

.fam__it{
  background:var(--ink);
  padding:0 0 26px;
  display:flex; flex-direction:column;
  position:relative;
  transition:background .35s var(--ease);
}
.fam__it:hover{ background:var(--ink-3); }
.fam__ph{ aspect-ratio:1/1; overflow:hidden; background:var(--ink-2); position:relative; }
.fam__ph img{ width:100%; height:100%; object-fit:cover; transition:transform .8s var(--ease), filter .5s; filter:grayscale(.28) contrast(1.06); }
.fam__it:hover .fam__ph img{ transform:scale(1.045); filter:grayscale(0) contrast(1.06); }
.fam__ref{
  position:absolute; top:12px; left:12px; z-index:2;
  font-family:var(--ff-mono); font-size:.64rem; letter-spacing:.14em;
  background:var(--blue); color:#fff; padding:4px 8px;
}
.fam__bd{ padding:22px 22px 0; flex:1; display:flex; flex-direction:column; }
.fam__bd h3{ margin:0 0 .5rem; }
.fam__bd p{ color:var(--steel-lt); font-size:.9rem; flex:1; }
.fam__dl{ list-style:none; margin:14px 0 0; padding:12px 0 0; border-top:1px solid var(--ink-line); display:grid; gap:5px; }
.fam__dl li{ display:flex; justify-content:space-between; gap:12px; font-family:var(--ff-mono); font-size:.7rem; color:var(--steel); }
.fam__dl b{ color:var(--mist); font-weight:500; }
.fam__go{ margin:18px 22px 0; }
.fam__it > a.stretch::after{ content:""; position:absolute; inset:0; }

/* ---------------- SELECTOR DE VÁLVULA ---------------- */
.sel{ display:grid; grid-template-columns:minmax(0,420px) minmax(0,1fr); gap:clamp(24px,4vw,56px); align-items:start; }
@media (max-width:900px){ .sel{ grid-template-columns:1fr; } }

.field{ margin-bottom:20px; }
.field > label,.field > legend{
  display:block; font-family:var(--ff-mono); font-size:.68rem;
  letter-spacing:.14em; text-transform:uppercase; color:var(--steel);
  margin-bottom:9px; padding:0;
}
.field input[type=text],.field input[type=number],.field input[type=email],.field select,.field textarea{
  width:100%; background:var(--ink-2); color:var(--paper);
  border:1px solid var(--ink-line); padding:.85em 1em;
  font-family:var(--ff-mono); font-size:.88rem;
  transition:border-color .22s var(--ease), background .22s;
  appearance:none; border-radius:0;
}
.field textarea{ font-family:var(--ff-body); min-height:130px; resize:vertical; }
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--steel) 50%),linear-gradient(135deg,var(--steel) 50%,transparent 50%);
  background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;
  background-size:6px 6px,6px 6px; background-repeat:no-repeat;
  padding-right:44px; cursor:pointer;
}
.field input:focus,.field select:focus,.field textarea:focus{ border-color:var(--blue); outline:none; background:var(--ink-3); }
.section--light .field input,.section--light .field select,.section--light .field textarea{ background:#fff; color:var(--ink); border-color:#C7CECF; }
.section--light .field > label,.section--light .field > legend{ color:#5B666B; }
.field__hint{ font-size:.76rem; color:var(--steel); margin:7px 0 0; font-family:var(--ff-mono); }

fieldset{ border:0; margin:0; padding:0; }
.chips{ display:flex; flex-wrap:wrap; gap:8px; }
.chips input{ position:absolute; opacity:0; width:1px; height:1px; }
.chips label{
  border:1px solid var(--ink-line); padding:.6em .95em; cursor:pointer;
  font-family:var(--ff-mono); font-size:.74rem; color:var(--steel-lt);
  transition:all .2s var(--ease);
}
.chips label:hover{ border-color:var(--steel); color:var(--paper); }
.chips input:checked + label{ background:var(--blue); border-color:var(--blue); color:#fff; }
.chips input:focus-visible + label{ outline:2px solid var(--blue); outline-offset:3px; }

.results{ display:grid; gap:1px; background:var(--ink-line); border:1px solid var(--ink-line); }
.res{
  background:var(--ink-2); padding:22px 24px;
  display:grid; grid-template-columns:64px 1fr auto; gap:20px; align-items:center;
}
@media (max-width:640px){ .res{ grid-template-columns:1fr; gap:12px; } }
.res__im{ width:64px; height:64px; object-fit:cover; background:var(--ink-3); filter:grayscale(.3); }
.res h4{ margin:0 0 4px; }
.res p{ margin:0; font-size:.86rem; color:var(--steel); }
.res__fit{ font-family:var(--ff-mono); font-size:.68rem; color:var(--ok); letter-spacing:.1em; text-transform:uppercase; }
.res__fit.part{ color:var(--note); }
.res--none{ background:var(--ink-2); padding:34px 24px; text-align:center; color:var(--steel); }

/* ---------------- CONFIGURADOR / CÓDIGO DE PEDIDO ---------------- */
.code{
  background:var(--ink); border:1px solid var(--ink-line);
  border-top:2px solid var(--blue);
  padding:24px; position:sticky; top:calc(var(--nav-h) + 24px);
}
.code__out{
  font-family:var(--ff-mono); font-size:clamp(1rem,2.1vw,1.45rem);
  color:var(--paper); word-break:break-all; line-height:1.45;
  padding:16px 0 18px; letter-spacing:.02em;
}
.code__out .seg{ transition:color .3s var(--ease); }
.code__out .seg.flash{ color:var(--blue); }
.code__out .sep{ color:var(--steel); }
.code__key{ list-style:none; margin:0; padding:16px 0 0; border-top:1px solid var(--ink-line); display:grid; gap:7px; }
.code__key li{ display:flex; gap:12px; font-family:var(--ff-mono); font-size:.72rem; color:var(--steel); }
.code__key li b{ color:var(--blue); font-weight:500; min-width:52px; }
.code__key li span{ color:var(--mist); }

/* ---------------- TRAZABILIDAD ---------------- */
.trace__form{ display:flex; gap:10px; flex-wrap:wrap; }
.trace__form input{ flex:1 1 260px; }
.trace__out{ margin-top:30px; }
.doc{
  border:1px solid var(--ink-line); background:var(--ink-2);
  padding:clamp(20px,3vw,34px);
}
.section--light .doc{ background:#fff; border-color:#D2D8D8; }
.doc__hd{ display:flex; flex-wrap:wrap; justify-content:space-between; gap:14px; align-items:flex-start; padding-bottom:18px; border-bottom:1px solid var(--ink-line); }
.section--light .doc__hd{ border-bottom-color:#D2D8D8; }
.doc__sn{ font-family:var(--ff-mono); font-size:clamp(1.1rem,2.4vw,1.6rem); color:var(--blue); letter-spacing:.03em; }
.badge{
  font-family:var(--ff-mono); font-size:.66rem; letter-spacing:.12em; text-transform:uppercase;
  border:1px solid var(--ok); color:var(--ok); padding:5px 10px; display:inline-flex; align-items:center; gap:7px;
}
.badge::before{ content:""; width:6px; height:6px; background:var(--ok); border-radius:50%; }

.dl{ display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:1px; background:var(--ink-line); margin-top:1px; }
.section--light .dl{ background:#D2D8D8; }
.dl div{ background:var(--ink-2); padding:16px 18px; }
.section--light .dl div{ background:#fff; }
.dl dt{ font-family:var(--ff-mono); font-size:.63rem; letter-spacing:.14em; text-transform:uppercase; color:var(--steel); margin-bottom:7px; }
.dl dd{ margin:0; font-family:var(--ff-mono); font-size:.94rem; color:var(--paper); }
.section--light .dl dd{ color:var(--ink); }

.tests{ width:100%; border-collapse:collapse; margin-top:26px; font-size:.86rem; }
.tests th,.tests td{ text-align:left; padding:12px 14px; border-bottom:1px solid var(--ink-line); }
.section--light .tests th,.section--light .tests td{ border-bottom-color:#D2D8D8; }
.tests th{ font-family:var(--ff-mono); font-size:.63rem; letter-spacing:.14em; text-transform:uppercase; color:var(--steel); font-weight:500; }
.tests td{ font-family:var(--ff-mono); color:var(--mist); }
.section--light .tests td{ color:#333B3E; }
.tests td.pass{ color:var(--ok); }

/* ---------------- SECTORES ---------------- */
.sect{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--ink-line); border:1px solid var(--ink-line); }
@media (max-width:900px){ .sect{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .sect{ grid-template-columns:1fr; } }
.sect__it{ background:var(--ink); padding:28px 26px 30px; position:relative; overflow:hidden; transition:background .3s var(--ease); }
.sect__it:hover{ background:var(--ink-3); }
.sect__n{ font-family:var(--ff-mono); font-size:.66rem; color:var(--blue); letter-spacing:.14em; }
.sect__it h3{ margin:.7rem 0 .55rem; }
.sect__it p{ color:var(--steel-lt); font-size:.9rem; margin:0; }
.sect__it ul{ list-style:none; margin:16px 0 0; padding:14px 0 0; border-top:1px solid var(--ink-line); display:flex; flex-wrap:wrap; gap:7px; }
.sect__it li{ font-family:var(--ff-mono); font-size:.66rem; color:var(--steel); border:1px solid var(--ink-line); padding:3px 7px; }

/* ---------------- BLOQUE MEDIA ---------------- */
.media{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(24px,4vw,64px); align-items:center; }
.media--rev .media__tx{ order:2; }
@media (max-width:860px){ .media{ grid-template-columns:1fr; } .media--rev .media__tx{ order:0; } }
.media__im{ position:relative; }
.media__im img{ width:100%; aspect-ratio:3/2; object-fit:cover; filter:grayscale(.22) contrast(1.05); }
.media__cap{
  position:absolute; left:0; bottom:0; background:var(--ink); color:var(--steel-lt);
  font-family:var(--ff-mono); font-size:.66rem; letter-spacing:.1em; padding:9px 13px;
  border-top:1px solid var(--ink-line); border-right:1px solid var(--ink-line);
}
.section--light .media__cap{ background:var(--paper); border-color:#D2D8D8; color:#5B666B; }

/* cifras de capacidad */
.caps{ list-style:none; margin:28px 0 0; padding:0; display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--ink-line); border:1px solid var(--ink-line); }
.section--light .caps{ background:#D2D8D8; border-color:#D2D8D8; }
.caps li{ background:var(--ink); padding:18px 20px; }
.section--light .caps li{ background:var(--paper); }
.caps b{ display:block; font-family:var(--ff-display); font-variation-settings:'wdth' 112,'wght' 700; font-size:clamp(1.3rem,2.4vw,2rem); color:var(--paper); line-height:1; }
.section--light .caps b{ color:var(--ink); }
.caps span{ display:block; margin-top:7px; font-family:var(--ff-mono); font-size:.64rem; letter-spacing:.12em; text-transform:uppercase; color:var(--steel); }

/* ---------------- CERTIFICACIONES ---------------- */
.certs{ display:flex; flex-wrap:wrap; gap:10px; }
.certs span{
  font-family:var(--ff-mono); font-size:.74rem; letter-spacing:.07em;
  border:1px solid var(--ink-line); color:var(--mist); padding:.65em 1em;
  display:inline-flex; align-items:center; gap:9px;
}
.section--light .certs span{ border-color:#C7CECF; color:#333B3E; }
.certs span::before{ content:""; width:5px; height:5px; background:var(--blue); flex:none; transform:rotate(45deg); }

/* ---------------- CTA FINAL ---------------- */
.cta{ background:var(--blue); color:#fff; }
.cta .display{ color:#fff; }
.cta .lede{ color:rgba(255,255,255,.88); }
.cta .btn{ --bg:var(--ink); --bd:var(--ink); --fg:#fff; }
.cta .btn:hover{ background:#000; border-color:#000; }
.cta__grid{ display:grid; grid-template-columns:1.25fr 1fr; gap:clamp(24px,4vw,56px); align-items:end; }
@media (max-width:800px){ .cta__grid{ grid-template-columns:1fr; align-items:start; } }
.cta__list{ list-style:none; margin:0; padding:0; display:grid; gap:12px; }
.cta__list li{ display:flex; gap:12px; font-size:.94rem; align-items:baseline; }
.cta__list li::before{ content:""; width:6px; height:6px; background:#fff; flex:none; transform:rotate(45deg); }

/* ---------------- CABECERA DE PÁGINA INTERIOR ---------------- */
.phead{
  padding:calc(var(--nav-h) + clamp(56px,9vw,120px)) 0 clamp(42px,6vw,80px);
  border-bottom:1px solid var(--ink-line);
  background:radial-gradient(90% 130% at 12% 0%, #171D20 0%, var(--ink) 65%);
}
.phead .lede{ margin-top:1.2rem; }
.crumb{ font-family:var(--ff-mono); font-size:.68rem; letter-spacing:.12em; text-transform:uppercase; color:var(--steel); margin-bottom:1.2rem; }
.crumb a:hover{ color:var(--blue); }
.crumb span{ color:var(--ink-line); margin:0 .6em; }

/* ---------------- FICHA DE PRODUCTO ---------------- */
.prod{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(28px,4vw,64px); align-items:start; }
@media (max-width:900px){ .prod{ grid-template-columns:1fr; } }
.prod__im{ background:var(--ink-2); border:1px solid var(--ink-line); }
.prod__im img{ width:100%; aspect-ratio:1/1; object-fit:cover; }
.spectab{ width:100%; border-collapse:collapse; margin-top:26px; }
.spectab th,.spectab td{ text-align:left; padding:13px 0; border-bottom:1px solid var(--ink-line); font-size:.9rem; }
.spectab th{ font-family:var(--ff-mono); font-size:.68rem; letter-spacing:.12em; text-transform:uppercase; color:var(--steel); font-weight:500; width:44%; }
.spectab td{ font-family:var(--ff-mono); color:var(--mist); }

.dlgrid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:12px; margin-top:22px; }
.dlcard{
  border:1px solid var(--ink-line); padding:16px 18px; display:flex; gap:14px; align-items:center;
  transition:border-color .25s var(--ease), background .25s;
}
.dlcard:hover{ border-color:var(--blue); background:var(--ink-2); }
.dlcard b{ display:block; font-size:.9rem; color:var(--paper); font-weight:500; }
.dlcard span{ font-family:var(--ff-mono); font-size:.66rem; color:var(--steel); letter-spacing:.08em; }
.dlcard svg{ flex:none; color:var(--blue); }

/* aviso de demo */
.demo{
  background:var(--ink-3); border:1px solid var(--ink-line); border-left:2px solid var(--note);
  padding:16px 20px; font-size:.85rem; color:var(--steel-lt); margin-top:26px;
}
.demo b{ color:var(--note); font-family:var(--ff-mono); font-size:.7rem; letter-spacing:.12em; text-transform:uppercase; display:block; margin-bottom:5px; }
.section--light .demo{ background:#EAEEEE; border-left-color:var(--note); color:#4A5458; }

/* --- lienzo de la secuencia del corte --- */
.cut__cv{
  position:absolute; top:50%; left:50%;
  width:min(108%,1420px); height:auto; max-width:none;
  transform:translate(-50%,-50%);
  will-change:transform;            /* sin transicion: lo mueve el scroll */
}
@media (max-width:900px){ .cut__cv{ width:150%; } }

/* nombre de las piezas que se ven en ese paso */
.cut__piezas{
  margin:14px 0 0; padding-top:13px; border-top:1px solid var(--ink-line);
  font-family:var(--ff-mono); font-size:.72rem; letter-spacing:.09em;
  text-transform:uppercase; color:var(--blue);
}
.cut__piezas + .cut__spec{ border-top:0; padding-top:10px; margin-top:8px; }

/* --- salto entre las cuatro series --- */
.otras{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
        background:var(--ink-line); border:1px solid var(--ink-line); }
@media (max-width:900px){ .otras{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .otras{ grid-template-columns:1fr; } }
.otra{ background:var(--ink); padding:22px 20px 24px; display:block; position:relative;
       transition:background .28s var(--ease); }
a.otra:hover{ background:var(--ink-3); }
.otra__ref{ display:block; font-size:.7rem; letter-spacing:.16em; color:var(--blue); }
.otra__n{ display:block; margin:.6rem 0 .5rem; font-family:var(--ff-display);
          font-variation-settings:'wdth' 108,'wght' 700; text-transform:uppercase;
          font-size:1.02rem; line-height:1.15; color:var(--paper); }
.otra__d{ display:block; font-size:.7rem; color:var(--steel); }
.otra--aqui{ background:var(--ink-3); }
.otra__aqui{ display:inline-block; margin-top:10px; font-size:.62rem; letter-spacing:.14em;
             text-transform:uppercase; color:var(--ink); background:var(--blue); padding:3px 8px; }