/* Pistas de Hielo Ecológicas — hoja de estilo */

:root{
  --azul:#0b2f45;
  --azul-medio:#14607f;
  --azul-claro:#4db6e8;
  --hielo:#eaf4f9;
  --blanco:#ffffff;
  --texto:#12222e;
  --gris:#6b7a88;
  --borde:#d5e3ec;
  --verde:#1a9e5c;
  --sombra:0 18px 45px rgba(11,47,69,.12);
  --sombra-fuerte:0 26px 70px rgba(11,47,69,.22);
  --radio:16px;
  --ancho:1200px;
  --trans:.4s cubic-bezier(.2,.8,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color:var(--texto);background:var(--blanco);line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.contenedor{width:100%;max-width:var(--ancho);margin:0 auto;padding:0 24px}

/* ---------- tipografia ---------- */
h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,5.5vw,4.2rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.9rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem)}
.destacado{
  background:linear-gradient(120deg,var(--azul-claro),#7fd8f5);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.antetitulo{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--azul-medio);margin-bottom:14px;
}
.entradilla{font-size:clamp(1rem,1.5vw,1.2rem);color:var(--gris);max-width:70ch}

/* ---------- cabecera ---------- */
.barra{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:14px 0;transition:var(--trans);
  background:rgba(11,47,69,0);backdrop-filter:blur(0px);
}
/* las paginas sin portada oscura llevan la barra opaca desde el inicio */
body.interior{padding-top:70px}
.barra.solida{
  background:rgba(255,255,255,.9);backdrop-filter:blur(18px) saturate(1.4);
  box-shadow:0 1px 0 var(--borde);padding:9px 0;
}
.barra .contenedor{display:flex;align-items:center;justify-content:space-between;gap:20px}
.marca{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1rem;color:#fff;transition:var(--trans);white-space:nowrap;flex-shrink:0}
.barra.solida .marca{color:var(--azul)}
.marca img{height:46px;width:auto;filter:drop-shadow(0 3px 10px rgba(0,0,0,.35))}
.menu{display:flex;align-items:center;gap:22px}
.menu a{font-size:.9rem;font-weight:600;color:rgba(255,255,255,.92);position:relative;transition:var(--trans);white-space:nowrap}
.barra.solida .menu a{color:var(--texto)}
.menu a::after{
  content:'';position:absolute;left:0;bottom:-6px;width:0;height:2px;
  background:var(--azul-claro);transition:var(--trans);
}
.menu a:hover::after,.menu a.activo::after{width:100%}
.boton{
  display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:100px;white-space:nowrap;
  font-weight:700;font-size:.94rem;border:0;cursor:pointer;transition:var(--trans);
  background:linear-gradient(135deg,var(--azul-medio),var(--azul-claro));color:#fff;
  box-shadow:0 10px 26px rgba(20,96,127,.35);
}
.boton:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(20,96,127,.48)}
.boton.claro{background:#fff;color:var(--azul);box-shadow:0 10px 26px rgba(0,0,0,.16)}
.boton.linea{background:transparent;border:2px solid rgba(255,255,255,.6);box-shadow:none;color:#fff}
.boton.linea:hover{background:rgba(255,255,255,.14);border-color:#fff}
.hamburguesa{display:none;background:none;border:0;cursor:pointer;padding:8px}
.hamburguesa span{display:block;width:26px;height:2px;background:#fff;margin:5px 0;transition:var(--trans)}
.barra.solida .hamburguesa span{background:var(--azul)}

/* ---------- portada ---------- */
.portada{
  position:relative;min-height:100vh;display:flex;align-items:center;
  overflow:hidden;background:var(--azul);
}
.portada video,.portada .fondo{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;
  transition:opacity 1.2s ease;
}
/* el video es de 640x360: un desenfoque minimo disimula el reescalado */
.portada video{filter:blur(1.5px) saturate(1.12);transform:scale(1.04)}
.portada::after{
  content:'';position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(11,47,69,.72) 0%,rgba(11,47,69,.5) 40%,rgba(11,47,69,.88) 100%);
}
.portada .contenedor{position:relative;z-index:2;color:#fff;padding-top:110px;padding-bottom:70px}
.portada h1{max-width:16ch;margin-bottom:22px;text-shadow:0 3px 30px rgba(0,0,0,.35)}
.portada .entradilla{color:rgba(255,255,255,.9);max-width:55ch;margin-bottom:34px;font-size:1.15rem}
.acciones{display:flex;gap:14px;flex-wrap:wrap}
.marcadores{
  display:flex;gap:44px;flex-wrap:wrap;margin-top:64px;
  padding-top:34px;border-top:1px solid rgba(255,255,255,.2);
}
.marcador .cifra{font-size:2.4rem;font-weight:800;line-height:1;color:#fff}
.marcador .texto{font-size:.85rem;color:rgba(255,255,255,.72);margin-top:6px}
.flecha{
  position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:2;
  color:rgba(255,255,255,.75);font-size:1.6rem;animation:rebote 2.4s infinite;
}
@keyframes rebote{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}

/* ---------- secciones ---------- */
section{padding:clamp(60px,9vw,120px) 0}
.seccion-hielo{background:var(--hielo)}
.seccion-oscura{background:var(--azul);color:#fff}
.seccion-oscura .entradilla{color:rgba(255,255,255,.75)}
.seccion-oscura .antetitulo{color:var(--azul-claro)}
.cabecera-seccion{max-width:760px;margin-bottom:52px}
/* el H1 de las paginas interiores conserva el tamano visual de un H2 */
.cabecera-seccion h1{font-size:clamp(1.8rem,3.6vw,2.9rem)}
.cabecera-seccion.centrada{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- rejillas y tarjetas ---------- */
.rejilla{display:grid;gap:26px}
.rejilla.dos{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.rejilla.tres{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.rejilla.cuatro{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

.tarjeta{
  background:#fff;border:1px solid var(--borde);border-radius:var(--radio);
  padding:32px;transition:var(--trans);position:relative;overflow:hidden;
}
.tarjeta::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--azul-medio),var(--azul-claro));
  transform:scaleX(0);transform-origin:left;transition:var(--trans);
}
.tarjeta:hover{transform:translateY(-8px);box-shadow:var(--sombra-fuerte);border-color:transparent}
.tarjeta:hover::before{transform:scaleX(1)}
.tarjeta .icono{
  width:52px;height:52px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--hielo),#d7ecf6);font-size:1.5rem;margin-bottom:18px;
}
.tarjeta h3{margin-bottom:10px}
.tarjeta p{color:var(--gris);font-size:.96rem}

/* ---------- producto ---------- */
.pista{
  background:#fff;border:1px solid var(--borde);border-radius:20px;overflow:hidden;
  display:flex;flex-direction:column;transition:var(--trans);
}
.pista:hover{transform:translateY(-10px);box-shadow:var(--sombra-fuerte)}
.pista .foto{aspect-ratio:16/10;overflow:hidden;background:var(--hielo)}
.pista .foto img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.8,.2,1)}
.pista:hover .foto img{transform:scale(1.07)}
.pista .cuerpo{padding:28px;display:flex;flex-direction:column;flex:1}
.pista .medidas{font-size:.85rem;color:var(--azul-medio);font-weight:700;letter-spacing:.04em}
.pista h3{margin:6px 0 14px}
.pista ul{list-style:none;margin-bottom:22px}
.pista li{font-size:.92rem;color:var(--gris);padding:6px 0 6px 24px;position:relative}
.pista li::before{content:'✓';position:absolute;left:0;color:var(--verde);font-weight:800}
.pista .precio{margin-top:auto;padding-top:20px;border-top:1px solid var(--borde)}
.pista .precio .desde{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:var(--gris)}
.pista .precio .valor{font-size:2rem;font-weight:800;color:var(--azul);line-height:1.1}
.pista .precio .iva{font-size:.8rem;color:var(--gris)}

/* ---------- comparativa ---------- */
.tabla-envoltura{overflow-x:auto;border-radius:var(--radio);border:1px solid var(--borde);background:#fff}
/* dentro de una seccion oscura la tabla sigue siendo blanca: el texto no puede heredar el blanco */
.tabla-envoltura,.tabla-envoltura td,.tabla-envoltura tbody tr{color:var(--texto)}
table{width:100%;border-collapse:collapse;min-width:560px}
th{background:var(--azul);color:#fff;text-align:left;padding:16px 20px;font-size:.88rem;font-weight:700}
td{padding:15px 20px;border-bottom:1px solid var(--borde);font-size:.95rem}
tbody tr:hover{background:var(--hielo)}
tbody tr:last-child td{border-bottom:0}
.si{color:var(--verde);font-weight:700}
.no{color:#c0392b;font-weight:700}

/* ---------- galeria ---------- */
.galeria{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.galeria figure{
  border-radius:14px;overflow:hidden;position:relative;cursor:pointer;
  box-shadow:var(--sombra);aspect-ratio:4/3;background:var(--hielo);
}
.galeria img{width:100%;height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.2,.8,.2,1)}
.galeria figure:hover img{transform:scale(1.08)}
.galeria figcaption{
  position:absolute;inset:auto 0 0 0;padding:22px 18px 16px;color:#fff;font-size:.88rem;
  background:linear-gradient(to top,rgba(6,32,44,.85),transparent);
  opacity:0;transform:translateY(10px);transition:var(--trans);
}
.galeria figure:hover figcaption{opacity:1;transform:translateY(0)}
@media(max-width:900px){.galeria{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.galeria{grid-template-columns:1fr}}

/* ---------- preguntas ---------- */
.pregunta{border-bottom:1px solid var(--borde)}
.pregunta button{
  width:100%;background:none;border:0;padding:24px 44px 24px 0;text-align:left;cursor:pointer;
  font-size:1.05rem;font-weight:700;color:var(--texto);position:relative;font-family:inherit;
}
.pregunta button::after{
  content:'+';position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:1.6rem;font-weight:400;color:var(--azul-medio);transition:var(--trans);
}
.pregunta.abierta button::after{transform:translateY(-50%) rotate(45deg)}
.pregunta .respuesta{max-height:0;overflow:hidden;transition:max-height .5s cubic-bezier(.2,.8,.2,1)}
.pregunta .respuesta p{padding:0 44px 24px 0;color:var(--gris)}

/* ---------- formulario ---------- */
.formulario{background:#fff;border-radius:20px;padding:clamp(28px,4vw,46px);box-shadow:var(--sombra-fuerte)}
.campo{margin-bottom:20px}
.campo label{display:block;font-size:.86rem;font-weight:700;margin-bottom:8px;color:var(--azul)}
.campo input,.campo select,.campo textarea{
  width:100%;padding:14px 16px;border:1.5px solid var(--borde);border-radius:11px;
  font-size:.97rem;font-family:inherit;color:var(--texto);background:#fff;transition:var(--trans);
}
.campo input:focus,.campo select:focus,.campo textarea:focus{
  outline:0;border-color:var(--azul-claro);box-shadow:0 0 0 4px rgba(77,182,232,.16);
}
.campo textarea{resize:vertical;min-height:120px}
.fila{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:620px){.fila{grid-template-columns:1fr}}
.consentimiento{display:flex;gap:11px;align-items:flex-start;font-size:.84rem;color:var(--gris)}
.consentimiento input{width:auto;margin-top:3px;flex-shrink:0}
.aviso{padding:14px 18px;border-radius:11px;margin-bottom:20px;font-size:.92rem;display:none}
.aviso.ok{background:#e8f7ef;color:#15693f;border:1px solid #b6e4cb;display:block}
.aviso.error{background:#fdecea;color:#a02b21;border:1px solid #f2c2bd;display:block}

/* ---------- contacto directo ---------- */
.contacto-directo{display:flex;flex-direction:column;gap:26px}
.contacto-item{display:flex;gap:16px;align-items:flex-start}
.contacto-item .icono{
  width:46px;height:46px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;
  background:rgba(255,255,255,.12);font-size:1.25rem;
}
.contacto-item .etiqueta{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;opacity:.65}
.contacto-item .valor{font-size:1.1rem;font-weight:700}

/* ---------- pie ---------- */
footer{background:var(--azul);color:rgba(255,255,255,.72);padding:70px 0 28px}
.pie-rejilla{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:44px;margin-bottom:44px}
@media(max-width:800px){.pie-rejilla{grid-template-columns:1fr;gap:32px}}
footer h4{color:#fff;font-size:.86rem;text-transform:uppercase;letter-spacing:.14em;margin-bottom:18px}
footer ul{list-style:none}
footer li{margin-bottom:11px;font-size:.93rem}
footer a:hover{color:var(--azul-claro)}
.pie-abajo{
  border-top:1px solid rgba(255,255,255,.14);padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.85rem;
}

/* ---------- llamada final ---------- */
.cta{
  background:linear-gradient(135deg,var(--azul) 0%,var(--azul-medio) 100%);
  color:#fff;text-align:center;position:relative;overflow:hidden;
}
.cta::before{
  content:'';position:absolute;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(77,182,232,.28),transparent 70%);
  top:-280px;right:-180px;
}
.cta .contenedor{position:relative;z-index:1}
.cta h2{margin-bottom:16px}
.cta p{color:rgba(255,255,255,.82);max-width:56ch;margin:0 auto 32px}

/* ---------- animaciones de entrada ---------- */
.revela{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1)}
.revela.visible{opacity:1;transform:none}
.revela.d1{transition-delay:.1s}.revela.d2{transition-delay:.2s}
.revela.d3{transition-delay:.3s}.revela.d4{transition-delay:.4s}

/* ---------- responsive ---------- */
@media(max-width:1180px){.marca span{display:none}}
@media(max-width:900px){
  .hamburguesa{display:block}
  .menu{
    position:fixed;inset:0 0 0 auto;width:min(84vw,340px);background:#fff;
    flex-direction:column;align-items:flex-start;gap:6px;padding:100px 30px 30px;
    transform:translateX(100%);transition:var(--trans);box-shadow:-20px 0 60px rgba(0,0,0,.2);
  }
  .menu.abierto{transform:none}
  .menu a{color:var(--texto)!important;font-size:1.1rem;padding:12px 0;width:100%}
  .marcadores{gap:28px}
  .marcador .cifra{font-size:1.9rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .revela{opacity:1;transform:none}
}

/* ---------- cuerpo de los articulos del blog ---------- */
.entrada p{margin:0 0 18px;font-size:1.06rem;line-height:1.78;color:#2c3d4b}
.entrada h2{font-size:clamp(1.35rem,2.4vw,1.75rem);margin:38px 0 14px;color:var(--azul)}
.entrada ul{margin:0 0 20px;padding-left:22px}
.entrada li{margin-bottom:9px;font-size:1.04rem;line-height:1.7;color:#2c3d4b}
.entrada strong{color:var(--azul)}
.entrada em{color:var(--gris)}
.pista a{color:inherit;text-decoration:none}