/* ==========================================================================
   26 · Mostrador claro
   Para tiendas de tecnología con catálogo largo y logo claro. Plata de lienzo
   como el fondo del logo, negro para el texto y el cian de la flecha como único
   acento. La firma es la flecha que sube: se dibuja bajo los títulos, marca los
   puntos de las listas y da forma a la estela de la portada. Catálogo con filtro
   de categorías hecho solo con CSS.
   ========================================================================== */

:root{
  --cian:var(--marca-1, #43E1EA);
  --cian-hondo:#0A7C88;
  --cian-humo:#E4FAFC;
  --plata:#ECEDEF;
  --plata-honda:#DCDEE2;
  --blanco:#FFFFFF;
  --tinta:#0B0C0E;
  --tinta-2:#1C1F24;
  --tinta-suave:#5F666F;
  --linea:rgba(11,12,14,.12);
  --linea-clara:rgba(255,255,255,.16);
  --ease:cubic-bezier(.2,.8,.25,1);
  --r:16px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth; overflow-x:clip}
body{margin:0; background:var(--blanco); color:var(--tinta); line-height:1.7; -webkit-font-smoothing:antialiased}
img{max-width:100%; display:block}
a{color:inherit}
h1,h2,h3{margin:0; font-weight:700; line-height:1.08; letter-spacing:-.025em}
h1 em, h2 em{font-style:normal; color:var(--cian-hondo)}
p{margin:0 0 1rem}
.blob{display:none !important}

.wrap{width:min(1200px,92vw); margin:0 auto}
.sec{padding:104px 0; position:relative}
.centrado{text-align:center}
.eyebrow{font-size:.64rem; letter-spacing:.28em; text-transform:uppercase; color:var(--cian-hondo); margin:0 0 14px; font-weight:700}
.oscuro .eyebrow{color:var(--cian)}
/* la flecha que sube, dibujada bajo el título */
.n-flecha{display:block; width:112px; height:12px; margin-top:18px; overflow:visible}
.n-flecha path{stroke:var(--cian); stroke-width:3; fill:none; stroke-linecap:round; stroke-dasharray:150; stroke-dashoffset:150; transition:stroke-dashoffset 1.2s var(--ease) .2s}
.visto .n-flecha path, .n-flecha.visto path{stroke-dashoffset:0}

/* ---------- Botones ---------- */
.btn{display:inline-flex; align-items:center; justify-content:center; gap:10px; padding:16px 28px; border-radius:999px; text-decoration:none; font-weight:700;
  font-size:.82rem; letter-spacing:.08em; border:1.5px solid transparent; cursor:pointer;
  transition:transform .3s var(--ease), background .3s, color .3s, border-color .3s, box-shadow .3s}
.btn svg{width:1.15em; height:1.15em; flex:none}
.btn-primary{background:var(--tinta); color:var(--blanco)}
.btn-primary:hover{background:var(--cian); color:var(--tinta); transform:translateY(-3px)}
.btn-cian{background:var(--cian); color:var(--tinta); box-shadow:0 14px 30px -14px rgba(67,225,234,.9)}
.btn-cian:hover{transform:translateY(-3px); background:var(--blanco)}
.btn-linea{background:transparent; color:var(--tinta); border-color:var(--linea)}
.btn-linea:hover{border-color:var(--tinta)}
.oscuro .btn-linea{color:var(--blanco); border-color:var(--linea-clara)}
.oscuro .btn-linea:hover{background:var(--blanco); color:var(--tinta)}
.btn-wa{background:#25D366; color:#04331d}
.btn-wa:hover{transform:translateY(-3px)}
.btn-sm{padding:10px 18px; font-size:.72rem}
.chip{display:inline-flex; align-items:center; gap:9px; font-size:.72rem; letter-spacing:.06em; font-weight:700}
.chip svg{width:16px; height:16px; color:var(--cian-hondo)}
.oscuro .chip svg{color:var(--cian)}

/* ---------- Encabezado ---------- */
#hdr{position:sticky; top:0; z-index:60; background:rgba(255,255,255,.9); backdrop-filter:blur(14px); border-bottom:1px solid var(--linea)}
.nav{display:flex; align-items:center; justify-content:space-between; gap:24px; height:78px; transition:height .3s var(--ease)}
header.stuck .nav{height:62px}
.brand{display:flex; align-items:center; gap:12px; text-decoration:none; min-width:0}
.brand img{width:auto; height:54px; max-width:173px; object-fit:contain; flex:none}
.brand > span{display:flex; flex-direction:column; min-width:0}
.brand b{font-size:1.02rem; letter-spacing:-.02em; color:var(--tinta); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.brand i{font-style:normal; font-size:.54rem; letter-spacing:.26em; text-transform:uppercase; color:var(--cian-hondo); font-weight:700}
.nav-links{display:flex; gap:28px}
.nav-links a{position:relative; text-decoration:none; color:var(--tinta); font-size:.78rem; letter-spacing:.02em; font-weight:600; padding:6px 0}
.nav-links a::after{content:""; position:absolute; left:0; bottom:0; height:2px; width:100%; background:var(--cian); transform:scaleX(0); transform-origin:right; transition:transform .35s var(--ease)}
.nav-links a:hover::after{transform:scaleX(1); transform-origin:left}

/* ---------- 1 · Portada ---------- */
.n-hero{background:linear-gradient(180deg, var(--blanco) 0%, var(--plata) 100%); padding:76px 0 120px; position:relative; overflow:hidden}
.n-hero .wrap{display:grid; grid-template-columns:1.02fr .98fr; gap:56px; align-items:center; position:relative; z-index:1}
.n-hero h1{font-size:clamp(2.5rem,5.6vw,4.6rem)}
.n-lead{margin:22px 0 0; max-width:46ch; color:var(--tinta-suave); font-size:1.06rem}
/* el buscador: lo que escribes se va con el mensaje de WhatsApp */
.n-buscar{display:flex; gap:10px; margin:30px 0 22px; background:var(--blanco); border:1.5px solid var(--tinta); border-radius:999px; padding:7px 7px 7px 22px; align-items:center; max-width:520px}
.n-buscar input{flex:1; min-width:0; border:0; background:none; font:inherit; font-size:.98rem; color:var(--tinta); padding:10px 0}
.n-buscar input::placeholder{color:var(--tinta-suave)}
.n-buscar input:focus{outline:none}
.n-buscar:focus-within{box-shadow:0 0 0 4px var(--cian-humo)}
.n-buscar button{flex:none}
.n-pie-buscar{font-size:.8rem; color:var(--tinta-suave); margin:0 0 28px}
.n-firmas{display:flex; flex-wrap:wrap; gap:12px 24px; padding-top:22px; border-top:1px solid var(--linea)}
/* la estela: tres piezas escalonadas sobre el trazo del logo */
.n-estela{position:relative; min-height:420px}
.n-estela::before{content:""; position:absolute; inset:-8% -14% -8% -6%; z-index:0; pointer-events:none;
  background:radial-gradient(ellipse at 68% 28%, rgba(67,225,234,.5), transparent 62%)}
.n-pieza{position:absolute; z-index:1; background:var(--blanco); border-radius:var(--r); padding:14px; box-shadow:0 30px 60px -28px rgba(11,12,14,.4); border:1px solid var(--linea)}
.n-pieza img{width:100%; height:auto; aspect-ratio:1; object-fit:contain; background:var(--blanco); border-radius:10px}
.n-pieza span{display:block; margin-top:10px; font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; font-weight:700; color:var(--tinta-suave); text-align:center}
.n-pieza.p1{width:52%; left:0; top:6%}
.n-pieza.p2{width:44%; right:2%; top:0}
.n-pieza.p3{width:46%; right:12%; bottom:2%}
.anim .n-pieza{animation:flotarPieza 6s ease-in-out infinite}
.anim .n-pieza.p2{animation-delay:1.6s}
.anim .n-pieza.p3{animation-delay:3.1s}
@keyframes flotarPieza{0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)}}

/* ---------- 2 · Banda de servicios ---------- */
.n-servicios{background:var(--tinta); color:var(--blanco)}
.n-servicios .wrap{display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--linea-clara)}
.n-servicios div{background:var(--tinta); padding:26px 22px}
.n-servicios b{display:block; font-size:.92rem; margin-bottom:4px}
.n-servicios small{font-size:.78rem; color:rgba(255,255,255,.6)}

/* ---------- 3 · Catálogo con filtro ---------- */
.n-tienda{background:var(--blanco)}
.n-cab{display:grid; grid-template-columns:1fr auto; gap:24px; align-items:end; margin-bottom:34px}
.n-cab h2{font-size:clamp(2rem,4.4vw,3.4rem)}
.n-cab p{margin:14px 0 0; color:var(--tinta-suave); max-width:52ch}
.n-cat > input{position:absolute; opacity:0; width:1px; height:1px; pointer-events:none}
.n-chips{display:flex; flex-wrap:wrap; gap:10px; margin-bottom:38px; padding-bottom:26px; border-bottom:1px solid var(--linea)}
.n-chips label{cursor:pointer; padding:11px 22px; border-radius:999px; border:1.5px solid var(--linea); font-size:.78rem; font-weight:700; letter-spacing:.04em; transition:background .25s, color .25s, border-color .25s}
.n-chips label:hover{border-color:var(--tinta)}
.n-chips label i{font-style:normal; color:var(--tinta-suave); margin-left:8px; font-weight:600}
.n-rejilla{display:grid; grid-template-columns:repeat(4,1fr); gap:22px}
.n-item{display:flex; flex-direction:column; background:var(--blanco); border:1px solid var(--linea); border-radius:var(--r); overflow:hidden; transition:transform .4s var(--ease), box-shadow .4s, border-color .3s}
.n-item:hover{transform:translateY(-6px); box-shadow:0 30px 55px -34px rgba(11,12,14,.45); border-color:var(--tinta)}
.n-foto{display:block; background:var(--plata); padding:18px; position:relative; border-bottom:1px solid var(--linea)}
.n-foto img{width:100%; height:auto; aspect-ratio:1; object-fit:contain; border-radius:8px}
.n-etq{position:absolute; left:12px; top:12px; background:var(--cian); color:var(--tinta); font-size:.58rem; letter-spacing:.16em; text-transform:uppercase; font-weight:700; padding:6px 11px; border-radius:999px}
.n-cuerpo{padding:18px 18px 20px; display:flex; flex-direction:column; gap:8px; flex:1}
.n-cuerpo h3{font-size:1rem; letter-spacing:-.01em}
.n-cuerpo h3 a{text-decoration:none}
.n-cuerpo p{margin:0; font-size:.85rem; color:var(--tinta-suave); flex:1}
.n-precio{font-size:1.28rem; font-weight:700; letter-spacing:-.02em; margin-top:2px}
.n-acc{display:flex; gap:8px; margin-top:6px; flex-wrap:wrap}
.n-nota{margin:44px auto 0; max-width:64ch; text-align:center; font-size:.86rem; color:var(--tinta-suave)}
/* El filtro se arma con CSS puro. Las reglas que dependen del nombre de cada
   categoría las escribe la portada, porque cambian con el catálogo. */
.n-cat > input:focus-visible ~ .n-chips label{outline:2px solid var(--cian-hondo); outline-offset:2px}
.sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0}

/* ---------- 4 · Lo que traen los audífonos ---------- */
.n-audio{background:var(--plata)}
.n-audio .wrap{display:grid; grid-template-columns:.85fr 1.15fr; gap:56px; align-items:center}
.n-audio h2{font-size:clamp(1.9rem,4vw,3rem)}
.n-audio > .wrap > div > p{color:var(--tinta-suave); margin-top:16px}
.n-rasgos{display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--linea); border:1px solid var(--linea); border-radius:var(--r); overflow:hidden}
.n-rasgos div{background:var(--blanco); padding:22px 22px}
.n-rasgos b{display:block; font-size:.92rem; margin-bottom:4px}
.n-rasgos small{font-size:.82rem; color:var(--tinta-suave); line-height:1.6; display:block}

/* ---------- 5 · Historia ---------- */
.n-somos{background:var(--blanco)}
.n-somos .wrap{display:grid; grid-template-columns:1.1fr .9fr; gap:60px; align-items:start}
.n-somos h2{font-size:clamp(2rem,4.4vw,3.2rem); margin-bottom:18px}
.n-somos p{color:var(--tinta-suave)}
.n-somos .hist > summary{color:var(--cian-hondo)}
.n-mv{display:grid; gap:16px}
.n-mv div{border:1px solid var(--linea); border-radius:var(--r); padding:24px}
.n-mv h3{font-size:.62rem; letter-spacing:.28em; text-transform:uppercase; color:var(--cian-hondo); margin-bottom:8px}
.n-mv p{margin:0; font-size:.94rem}

/* ---------- 6 · Cierre y contacto ---------- */
.n-cierre{background:var(--tinta); color:var(--blanco); text-align:center; position:relative; overflow:hidden}
.n-cierre::after{content:""; position:absolute; left:50%; bottom:-45%; width:76%; aspect-ratio:1; transform:translateX(-50%); border-radius:50%; background:radial-gradient(circle, rgba(67,225,234,.22), transparent 62%); pointer-events:none}
.n-cierre .wrap{position:relative; z-index:1}
.n-cierre h2{font-size:clamp(2.1rem,5vw,3.6rem); margin-bottom:16px}
.n-cierre > .wrap > div > p{max-width:52ch; margin:0 auto 28px; color:rgba(255,255,255,.72)}
.n-pasos{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:60px; text-align:left}
.n-pasos div{background:rgba(255,255,255,.05); border:1px solid var(--linea-clara); border-radius:var(--r); padding:28px 24px}
.n-pasos b{display:inline-grid; place-items:center; width:34px; height:34px; border-radius:50%; background:var(--cian); color:var(--tinta); font-weight:700; font-size:.86rem; margin-bottom:14px}
.n-pasos h3{font-size:1rem; margin-bottom:8px}
.n-pasos p{margin:0; font-size:.88rem; color:rgba(255,255,255,.68)}
.n-contacto{background:var(--blanco); padding:92px 0}
.n-contacto .wrap{display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:center}
.n-contacto h2{font-size:clamp(1.9rem,3.8vw,2.8rem); margin-bottom:14px}
.n-canales{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.n-canales a{display:flex; align-items:center; gap:14px; padding:18px 20px; border:1px solid var(--linea); border-radius:var(--r); text-decoration:none; transition:border-color .3s, transform .3s var(--ease)}
.n-canales a:hover{border-color:var(--tinta); transform:translateY(-3px)}
.n-canales svg{width:18px; height:18px; color:var(--cian-hondo); flex:none}
.n-canales .et{font-size:.56rem; letter-spacing:.24em; text-transform:uppercase; color:var(--tinta-suave); display:block; font-weight:700}
.n-canales .va{font-size:.92rem}

footer{background:var(--tinta); color:rgba(255,255,255,.66); padding:54px 0 40px}
.foot-top{display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; padding-bottom:24px; border-bottom:1px solid var(--linea-clara)}
.foot-top .brand b{color:var(--blanco)}
.foot-top .brand img{background:var(--blanco); border-radius:8px; padding:4px 8px}
.foot-social{display:flex; gap:10px}
.foot-social a{width:42px; height:42px; display:grid; place-items:center; border-radius:50%; border:1px solid var(--linea-clara); color:var(--blanco); transition:background .3s, color .3s, border-color .3s}
.foot-social a:hover{background:var(--cian); color:var(--tinta); border-color:var(--cian)}
.foot-social svg{width:17px; height:17px}
.foot-bot{display:flex; justify-content:space-between; gap:18px; flex-wrap:wrap; padding-top:20px; font-size:.8rem}

/* ---------- Piezas compartidas ---------- */
.progress{position:fixed; top:0; left:0; height:3px; width:0; z-index:100; background:var(--cian); transition:width .1s linear}
.saltar{background:var(--tinta); color:var(--blanco); border-radius:999px}
.pista{color:var(--tinta-suave)}
.wa-float{position:fixed; right:24px; bottom:24px; z-index:90; display:inline-flex; align-items:center; gap:10px; background:var(--tinta); color:var(--blanco); text-decoration:none;
  font-weight:700; font-size:.72rem; letter-spacing:.06em; padding:16px 22px; border-radius:999px; box-shadow:0 18px 38px -16px rgba(11,12,14,.7);
  transition:transform .3s var(--ease), background .3s, color .3s}
.wa-float:hover{transform:translateY(-3px); background:var(--cian); color:var(--tinta)}
.wa-float svg{width:19px; height:19px; flex:none; color:var(--cian)}
.wa-float:hover svg{color:var(--tinta)}
.anim .wa-float{animation:latirN 3.4s ease-out infinite}
@keyframes latirN{0%{box-shadow:0 18px 38px -16px rgba(11,12,14,.7), 0 0 0 0 rgba(67,225,234,.5)} 70%,100%{box-shadow:0 18px 38px -16px rgba(11,12,14,.7), 0 0 0 16px rgba(67,225,234,0)}}
.insignia, .insignia-linea{border-radius:999px}
.insignia-linea{background:var(--cian); color:var(--tinta); font-weight:700}
.hist > summary{color:var(--cian-hondo)}
.barra-compra{border-top:1px solid var(--linea)}
.barra-compra .bc-txt b{color:var(--tinta)}

/* ---------- Página de producto ---------- */
.np-cab{background:var(--blanco); padding:24px 0 2px}
.crumbs{margin:0; display:flex; gap:10px; flex-wrap:wrap; font-size:.72rem; color:var(--tinta-suave)}
.crumbs a{text-decoration:none; color:var(--tinta); font-weight:600}
.crumbs a:hover{color:var(--cian-hondo)}
.np-cuerpo{background:var(--blanco); padding:40px 0 96px}
.np-grid{display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:start}
.np-foto{background:var(--plata); border-radius:calc(var(--r) + 6px); padding:34px; position:relative}
.np-foto > img{width:100%; height:auto; aspect-ratio:1; object-fit:contain; border-radius:10px}
.np-foto .n-etq{left:18px; top:18px}
.kp-tira{display:flex; gap:10px; margin-top:16px}
.kp-tira button{padding:6px; border:1.5px solid transparent; border-radius:10px; background:var(--blanco); width:66px; cursor:pointer}
.kp-tira button[aria-current="true"]{border-color:var(--tinta)}
.kp-tira img{width:100%; height:auto; aspect-ratio:1; object-fit:contain}
.np-info h1{font-size:clamp(2rem,4.4vw,3.2rem); margin-bottom:14px}
.np-precio{display:flex; align-items:baseline; gap:14px; margin:22px 0 6px}
.np-precio b{font-size:clamp(1.9rem,4vw,2.8rem); letter-spacing:-.03em}
.np-precio small{font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:var(--tinta-suave); font-weight:700}
.p-agotado{font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; font-weight:700; color:var(--tinta-suave)}
.np-op{margin:22px 0 0}
.np-op h3{font-size:.62rem; letter-spacing:.28em; text-transform:uppercase; color:var(--tinta-suave); margin-bottom:10px}
.np-chips{display:flex; flex-wrap:wrap; gap:8px}
.np-chips button{background:var(--blanco); color:var(--tinta); border:1.5px solid var(--linea); border-radius:999px; padding:10px 18px; font:inherit; font-size:.82rem; font-weight:600; cursor:pointer; transition:border-color .2s, background .2s, color .2s}
.np-chips button:hover{border-color:var(--tinta)}
.np-chips button[aria-pressed="true"]{background:var(--tinta); border-color:var(--tinta); color:var(--blanco)}
/* los puntos llevan la flecha de la marca */
.np-puntos{list-style:none; margin:26px 0 0; padding:0; display:grid; gap:10px}
.np-puntos li{position:relative; padding-left:26px; font-size:.95rem; color:var(--tinta-suave)}
.np-puntos li::before{content:""; position:absolute; left:0; top:.55em; width:11px; height:11px; border-right:2.5px solid var(--cian-hondo); border-top:2.5px solid var(--cian-hondo); transform:rotate(45deg)}
.np-cta{display:flex; gap:12px; flex-wrap:wrap; margin-top:30px}
.np-detalle{background:var(--plata); padding:96px 0}
.np-detalle .wrap{display:grid; grid-template-columns:.8fr 1.2fr; gap:56px; align-items:start}
.np-detalle h2{font-size:clamp(1.8rem,3.6vw,2.6rem); margin-bottom:16px}
.np-otros{background:var(--blanco); padding:96px 0}
.np-otros-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-top:38px}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .n-rejilla, .np-otros-grid{grid-template-columns:repeat(3,1fr)}
  .n-servicios .wrap{grid-template-columns:1fr 1fr}
}
@media (max-width:1000px){
  .n-hero .wrap{grid-template-columns:1fr; gap:52px}
  .n-estela{min-height:340px; width:min(460px,100%); margin-inline:auto}
  .n-cab{grid-template-columns:1fr}
  .n-audio .wrap{grid-template-columns:1fr; gap:36px}
  .n-somos .wrap{grid-template-columns:1fr; gap:34px}
  .n-pasos{grid-template-columns:1fr}
  .n-contacto .wrap{grid-template-columns:1fr; gap:34px}
  .np-grid, .np-detalle .wrap{grid-template-columns:1fr; gap:40px}
}
@media (max-width:760px){
  .n-rejilla, .np-otros-grid{grid-template-columns:1fr 1fr}
  .n-rasgos{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .sec{padding:74px 0}
  .nav{height:66px}
  .nav-links{display:none}
  .n-hero{padding:44px 0 92px}
  .n-buscar{flex-wrap:wrap; border-radius:20px; padding:14px}
  .n-buscar input{flex:1 1 100%; padding:6px 4px 12px}
  .n-buscar button{flex:1 1 100%}
  .n-estela{min-height:300px}
  .n-servicios .wrap{grid-template-columns:1fr}
  .n-canales{grid-template-columns:1fr}
  .n-chips label{padding:10px 16px; font-size:.72rem}
  .wa-float span{display:none}
  .wa-float{padding:16px}
  .np-detalle, .np-otros{padding:70px 0}
  .np-foto{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn{transition:none}
  .n-pieza{animation:none !important}
  .n-flecha path{transition:none; stroke-dashoffset:0}
}

/* Aviso del pie: para landings que deben aclarar qué venden. */
.foot-legal{margin-top:14px; padding-top:14px; border-top:1px solid rgba(255,255,255,.16);
  font-size:.74rem; line-height:1.7; opacity:.68; max-width:76ch}