/* Acegrasquímicos — "laboratorio-taller": papel de ficha técnica, negro aceite, ámbar de seguridad */
:root{
  --papel:#F4F0E6; --papel-2:#ECE6D6; --tinta:#15130F; --tinta-2:#3A362D; --gris:#8A8474;
  --ambar:#E8A317; --oxido:#B8471E; --agua:#0F6B6A; --azul:#2F4A8A; --linea:#D8D0BC;
  --radio:4px; --sombra:0 1px 0 var(--tinta), 0 12px 30px -18px rgba(21,19,15,.45);
  --display:'Big Shoulders Display', Impact, sans-serif;
  --texto:'Instrument Sans', 'Helvetica Neue', sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{margin:0;background:var(--papel);color:var(--tinta);font-family:var(--texto);font-size:16px;line-height:1.55;
  background-image:radial-gradient(rgba(21,19,15,.045) 1px,transparent 1px);background-size:18px 18px}
img,svg{max-width:100%;display:block}
a{color:inherit}
.contenedor{max-width:1240px;margin:0 auto;padding:0 20px}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}
h1,h2,h3{font-family:var(--display);font-weight:800;line-height:.95;letter-spacing:.005em;margin:0;text-transform:uppercase}
h1{font-size:clamp(2.8rem,7vw,5.6rem)} h2{font-size:clamp(2rem,4.4vw,3.4rem)} h3{font-size:1.45rem}

/* Barra de anuncio */
.anuncio{background:var(--tinta);color:var(--papel);font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;overflow:hidden;white-space:nowrap}
.anuncio .cinta{display:inline-flex;gap:48px;padding:9px 0;animation:cinta 38s linear infinite}
.anuncio b{color:var(--ambar);font-weight:500}
@keyframes cinta{to{transform:translateX(-50%)}}

/* Header */
.header{position:sticky;top:0;z-index:30;background:rgba(244,240,230,.94);backdrop-filter:blur(8px);border-bottom:2px solid var(--tinta)}
.header .fila{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo .sello{width:40px;height:40px;border:2.5px solid var(--tinta);border-radius:50%;display:grid;place-items:center;font-family:var(--display);font-weight:900;font-size:1.05rem;background:var(--ambar)}
.logo .nombre{font-family:var(--display);font-weight:900;font-size:1.55rem;text-transform:uppercase;letter-spacing:.01em;line-height:.9}
.logo .nombre small{display:block;font-family:var(--mono);font-size:.58rem;font-weight:400;letter-spacing:.14em;color:var(--tinta-2)}
.nav{display:flex;gap:20px;margin-left:12px}
.nav a{text-decoration:none;font-weight:600;font-size:.93rem;position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--ambar);transition:width .25s}
.nav a:hover::after,.nav a[aria-current]::after{width:100%}
.acciones{margin-left:auto;display:flex;align-items:center;gap:10px}
.buscar{display:flex;align-items:center;border:2px solid var(--tinta);border-radius:var(--radio);background:#fff;height:40px}
.buscar input{border:0;background:none;padding:0 10px;font:inherit;font-size:.9rem;width:180px;outline:none}
.buscar button,.btn-icono{border:0;background:none;cursor:pointer;display:grid;place-items:center;width:40px;height:40px}
.btn-icono{border:2px solid var(--tinta);border-radius:var(--radio);background:var(--papel);position:relative}
.btn-icono .cuenta[hidden]{display:none}
.btn-icono .cuenta{position:absolute;top:-8px;right:-8px;background:var(--oxido);color:#fff;font-family:var(--mono);font-size:.68rem;min-width:20px;height:20px;border-radius:10px;display:grid;place-items:center;padding:0 5px}
.menu-movil{display:none}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:700;text-decoration:none;cursor:pointer;
  border:2px solid var(--tinta);border-radius:var(--radio);padding:14px 22px;font-size:.98rem;background:var(--tinta);color:var(--papel);
  box-shadow:4px 4px 0 var(--ambar);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ambar)}
.btn.claro{background:var(--papel);color:var(--tinta);box-shadow:4px 4px 0 var(--tinta)}
.btn.claro:hover{box-shadow:6px 6px 0 var(--tinta)}
.btn.bloque{width:100%}
.btn.wa{background:#1f7a4d;border-color:#15130f;color:#fff;box-shadow:4px 4px 0 var(--tinta)}

/* Hero */
.hero{position:relative;border-bottom:2px solid var(--tinta);overflow:hidden}
.hero .grid>*,.producto>*,.banda .grid>*{min-width:0}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:64px 20px 72px}
.hero .kicker{display:inline-flex;gap:10px;align-items:center;border:1.5px solid var(--tinta);padding:6px 10px;border-radius:var(--radio);background:#fff}
.hero .kicker i{width:8px;height:8px;border-radius:50%;background:var(--ambar);box-shadow:0 0 0 3px rgba(232,163,23,.25)}
.hero h1{margin:22px 0 18px}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--ambar) 62%);padding:0 6px}
.hero p.lead{font-size:1.15rem;max-width:540px;color:var(--tinta-2)}
.hero .ctas{display:flex;gap:16px;flex-wrap:wrap;margin-top:28px}
.hero .banco{position:relative;height:420px}
.hero .banco .envase{position:absolute;filter:drop-shadow(0 18px 18px rgba(21,19,15,.18));animation:subir .9s cubic-bezier(.2,.8,.2,1) both}
.hero .banco .e1{width:62%;left:0;bottom:0;animation-delay:.15s}
.hero .banco .e2{width:46%;right:4%;bottom:10px;animation-delay:.3s}
.hero .banco .e3{width:34%;right:30%;top:0;animation-delay:.45s;transform:rotate(-6deg)}
.hero .franja{position:absolute;inset:auto 0 0 0;height:14px;background:repeating-linear-gradient(-45deg,var(--tinta) 0 14px,var(--ambar) 14px 28px)}
@keyframes subir{from{opacity:0;transform:translateY(40px)}}
.revelar{animation:subir .8s cubic-bezier(.2,.8,.2,1) both}
.d1{animation-delay:.05s}.d2{animation-delay:.15s}.d3{animation-delay:.25s}.d4{animation-delay:.35s}

/* Sellos de confianza */
.confianza{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:2px solid var(--tinta);background:var(--papel-2)}
.confianza div{padding:22px 20px;border-right:1.5px solid var(--linea);display:flex;gap:14px;align-items:flex-start}
.confianza div:last-child{border-right:0}
.confianza strong{display:block;font-family:var(--display);font-size:1.35rem;text-transform:uppercase;line-height:1}
.confianza span{font-size:.88rem;color:var(--tinta-2)}
.confianza svg{flex:none;width:30px;height:30px}

/* Secciones */
.seccion{padding:72px 0}
.seccion .cabeza{flex-wrap:wrap;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;border-bottom:2px solid var(--tinta);padding-bottom:14px}
.seccion .cabeza p{margin:6px 0 0;color:var(--tinta-2)}

/* Colecciones */
.colecciones{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.coleccion{position:relative;border:2px solid var(--tinta);border-radius:var(--radio);padding:22px 20px 18px;text-decoration:none;min-height:250px;
  display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;background:var(--c);color:var(--t);transition:transform .2s}
.coleccion:hover{transform:translateY(-4px)}
.coleccion h3{font-size:1.9rem;max-width:70%}
.coleccion p{max-width:68%}
.coleccion p{margin:10px 0 0;font-size:.92rem;opacity:.9}
.coleccion .flecha{font-family:var(--mono);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;margin-top:18px}
.coleccion .envase{position:absolute;right:-22px;bottom:34px;width:108px;opacity:.95;transform:rotate(8deg)}

/* Grid de productos (tarjeta estilo Shopify) */
.productos{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tarjeta{position:relative;display:flex;flex-direction:column;background:#fff;border:2px solid var(--tinta);border-radius:var(--radio);text-decoration:none;transition:box-shadow .2s, transform .2s}
.tarjeta:hover{box-shadow:6px 6px 0 var(--tinta);transform:translate(-2px,-2px)}
.tarjeta .foto{aspect-ratio:1/1;background:var(--papel-2);border-bottom:2px solid var(--tinta);display:grid;place-items:center;padding:18px;position:relative;overflow:hidden}
.tarjeta .foto::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 110%,var(--c),transparent 60%);opacity:.35}
.tarjeta .foto .envase{width:74%;position:relative;transition:transform .35s}
.tarjeta:hover .foto .envase{transform:rotate(-4deg) scale(1.05)}
.tarjeta .info{padding:14px 14px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.tarjeta .linea{font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gris)}
.tarjeta h3{font-family:var(--texto);text-transform:none;font-weight:700;font-size:1.02rem;line-height:1.25}
.tarjeta .sub{font-size:.85rem;color:var(--tinta-2)}
.tarjeta .precio{margin-top:auto;padding-top:8px;font-weight:700;display:flex;justify-content:space-between;align-items:baseline}
.tarjeta .precio small{font-family:var(--mono);font-weight:400;font-size:.7rem;color:var(--gris)}
.chip{position:absolute;top:10px;left:10px;z-index:2;background:var(--ambar);border:1.5px solid var(--tinta);font-family:var(--mono);font-size:.64rem;text-transform:uppercase;letter-spacing:.06em;padding:3px 7px;border-radius:2px}

/* Banda Petrosol */
.banda{background:var(--tinta);color:var(--papel);border-top:2px solid var(--tinta);border-bottom:2px solid var(--tinta)}
.banda .grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:72px 20px}
.banda h2 em{font-style:normal;color:var(--ambar)}
.banda .dos{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.banda .dos div{border:1.5px solid #4a453a;padding:16px;border-radius:var(--radio)}
.banda .dos strong{font-family:var(--display);font-size:1.4rem;text-transform:uppercase;color:var(--ambar)}
.banda .dos p{margin:6px 0 0;font-size:.92rem;color:#d6cfbd}
.banda .envase{width:78%;margin:0 auto;filter:drop-shadow(0 24px 30px rgba(0,0,0,.45))}

/* Industrias */
.industrias{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:2px solid var(--tinta);border-radius:var(--radio);overflow:hidden;background:#fff}
.industrias div{padding:20px 16px;border-right:1.5px solid var(--linea);text-align:left}
.industrias div:last-child{border-right:0}
.industrias b{display:block;font-family:var(--display);font-size:1.25rem;text-transform:uppercase}
.industrias span{font-size:.84rem;color:var(--tinta-2)}

/* Página de producto */
.miga{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:18px 0;color:var(--gris)}
.miga a{text-decoration:none}
.producto{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;padding-bottom:64px}
.producto .galeria{position:sticky;top:100px;align-self:start;background:#fff;border:2px solid var(--tinta);border-radius:var(--radio);aspect-ratio:1/1;display:grid;place-items:center;overflow:hidden}
.producto .galeria::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 100%,var(--c),transparent 60%);opacity:.3}
.producto .galeria{position:relative}
.producto .galeria .envase{width:66%;position:relative}
.producto .ficha-num{position:absolute;top:14px;left:14px;font-family:var(--mono);font-size:.7rem;border:1.5px solid var(--tinta);padding:4px 8px;background:var(--papel)}
.producto h1{font-size:clamp(2.4rem,5vw,4rem);margin:8px 0 6px}
.producto .sub{font-size:1.1rem;color:var(--tinta-2)}
.producto .precio-grande{font-family:var(--display);font-weight:800;font-size:2.3rem;margin:22px 0 2px}
.producto .precio-grande small{font-family:var(--mono);font-size:.75rem;font-weight:400;color:var(--gris);display:block}
.opciones{margin:22px 0}
.opciones legend{font-weight:700;margin-bottom:10px}
.opciones label{display:inline-flex;margin:0 8px 8px 0;cursor:pointer}
.opciones input{position:absolute;opacity:0}
.opciones span{border:2px solid var(--tinta);border-radius:var(--radio);padding:9px 14px;font-size:.9rem;background:#fff;transition:background .15s}
.opciones input:checked+span{background:var(--tinta);color:var(--papel)}
.opciones input:focus-visible+span{outline:3px solid var(--ambar);outline-offset:2px}
.cantidad{display:flex;align-items:center;border:2px solid var(--tinta);border-radius:var(--radio);width:max-content;background:#fff;margin-bottom:16px}
.cantidad button{width:44px;height:44px;border:0;background:none;font-size:1.2rem;cursor:pointer}
.cantidad input{width:52px;text-align:center;border:0;font:inherit;font-weight:700;background:none}
.comprar{display:grid;gap:12px}
.aviso{margin-top:18px;border:2px solid var(--tinta);background:repeating-linear-gradient(-45deg,#fff 0 10px,#fbf1d9 10px 20px);padding:12px 14px;border-radius:var(--radio);font-size:.9rem}
.acordeon{margin-top:28px;border-top:2px solid var(--tinta)}
.acordeon details{border-bottom:1.5px solid var(--linea)}
.acordeon summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:700;display:flex;justify-content:space-between}
.acordeon summary::after{content:"+";font-family:var(--mono)}
.acordeon details[open] summary::after{content:"–"}
.acordeon ul{margin:0 0 16px;padding-left:18px}
.acordeon .contenido{padding-bottom:16px;color:var(--tinta-2)}
table.specs{width:100%;border-collapse:collapse;margin-bottom:16px;font-size:.92rem}
table.specs th,table.specs td{text-align:left;padding:9px 0;border-bottom:1px dashed var(--linea);vertical-align:top}
table.specs th{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--gris);width:36%;font-weight:400}

/* Cajón de cotización */
.cajon{position:fixed;top:0;right:0;height:100%;width:min(420px,100%);background:var(--papel);border-left:2px solid var(--tinta);z-index:60;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column}
.cajon.abierto{transform:none}
.velo{position:fixed;inset:0;background:rgba(21,19,15,.45);z-index:55;opacity:0;pointer-events:none;transition:opacity .3s}
.velo.abierto{opacity:1;pointer-events:auto}
.cajon header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:2px solid var(--tinta)}
.cajon .items{flex:1;overflow:auto;padding:10px 20px}
.cajon .item{display:grid;grid-template-columns:64px 1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px dashed var(--linea)}
.cajon .item .envase{width:64px}
.cajon .item b{display:block;font-size:.95rem}
.cajon .item small{color:var(--gris);font-family:var(--mono);font-size:.7rem}
.cajon .item button{border:0;background:none;cursor:pointer;font-family:var(--mono);font-size:.7rem;text-decoration:underline}
.cajon footer{padding:20px;border-top:2px solid var(--tinta);display:grid;gap:10px}
.cajon .vacio{padding:40px 0;text-align:center;color:var(--gris)}
.cajon textarea,.cajon input{width:100%;border:2px solid var(--tinta);border-radius:var(--radio);padding:10px;font:inherit;font-size:.9rem;background:#fff}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,120px);background:var(--tinta);color:var(--papel);padding:12px 18px;border-radius:var(--radio);z-index:70;transition:transform .3s;font-size:.92rem}
.toast.ver{transform:translate(-50%,0)}

/* Footer */
.pie{background:var(--tinta);color:#d9d2c0;margin-top:0;border-top:14px solid transparent;border-image:repeating-linear-gradient(-45deg,var(--tinta) 0 14px,var(--ambar) 14px 28px) 14}
.pie .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:56px 20px 36px}
.pie h4{font-family:var(--display);text-transform:uppercase;color:var(--papel);font-size:1.25rem;margin:0 0 12px}
.pie a{text-decoration:none;display:block;padding:3px 0;color:#d9d2c0}
.pie a:hover{color:var(--ambar)}
.pie .legal{border-top:1px solid #3a362d;padding:18px 20px;font-family:var(--mono);font-size:.7rem;letter-spacing:.05em;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.wa-flotante{position:fixed;right:18px;bottom:18px;z-index:40;width:58px;height:58px;border-radius:50%;background:#1f7a4d;border:2px solid var(--tinta);display:grid;place-items:center;box-shadow:4px 4px 0 var(--tinta)}

/* Colección / listado */
.filtros{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.filtros a{border:2px solid var(--tinta);border-radius:999px;padding:6px 14px;text-decoration:none;font-size:.88rem;background:#fff}
.filtros a[aria-current]{background:var(--tinta);color:var(--papel)}
.titulo-col{padding:48px 0 30px;border-bottom:2px solid var(--tinta);margin-bottom:30px;position:relative}
.titulo-col p{max-width:640px;color:var(--tinta-2);font-size:1.08rem}
.vacio-busqueda{padding:40px;text-align:center;border:2px dashed var(--linea)}

/* Responsive */
@media (max-width:1000px){
  .nav,.buscar{display:none}
  .menu-movil{display:grid}
  .hero .grid,.banda .grid,.producto{grid-template-columns:1fr}
  .hero .banco{height:300px}
  .confianza{grid-template-columns:1fr 1fr}
  .confianza div:nth-child(2){border-right:0}
  .colecciones,.productos{grid-template-columns:1fr 1fr}
  .industrias{grid-template-columns:repeat(3,1fr)}
  .pie .grid{grid-template-columns:1fr 1fr}
  .producto .galeria{position:relative;top:0}
}
@media (max-width:560px){
  .colecciones{grid-template-columns:1fr}
  .productos{grid-template-columns:1fr 1fr;gap:12px}
  .confianza{grid-template-columns:1fr}.confianza div{border-right:0;border-bottom:1.5px solid var(--linea)}
  .hero .ctas .btn{width:100%}
  .tarjeta h3{font-size:.95rem}
  .coleccion{min-height:200px}.coleccion h3{font-size:1.45rem}
  .industrias{grid-template-columns:1fr 1fr}
  .pie .grid{grid-template-columns:1fr}
  .banda .dos{grid-template-columns:1fr}
  .logo .nombre{font-size:1.25rem}
}
.panel-movil{position:fixed;inset:0 20% 0 0;background:var(--papel);z-index:60;border-right:2px solid var(--tinta);padding:24px;transform:translateX(-100%);transition:transform .3s}
.panel-movil.abierto{transform:none}
.panel-movil a{display:block;font-family:var(--display);font-size:1.8rem;text-transform:uppercase;text-decoration:none;padding:8px 0;border-bottom:1px solid var(--linea)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.saltar{position:absolute;left:-999px;top:8px;z-index:100}
.saltar:focus{left:12px;background:var(--papel);padding:8px 14px;border:2px solid var(--tinta)}
/* Fotos fotorrealistas (IA): fondo beige se funde con la tarjeta */
.envase.foto-ia{display:block;height:auto;mix-blend-mode:multiply;border-radius:4px}
.tarjeta .foto .envase.foto-ia{width:100%}
.tarjeta:hover .foto .envase.foto-ia{transform:scale(1.04)}
.producto .galeria .envase.foto-ia{width:88%}
.cajon .item .envase.foto-ia{width:64px}
.ref-ia{position:absolute;right:10px;bottom:10px;font:600 .68rem/1 'IBM Plex Mono',monospace;letter-spacing:.04em;text-transform:uppercase;background:rgba(255,255,255,.85);color:var(--tinta);padding:5px 7px;border-radius:3px}
.tarjeta .foto:has(.foto-ia){padding:0}
.tarjeta .foto:has(.foto-ia)::before,.producto .galeria:has(.foto-ia)::before{display:none}
.producto .galeria .envase.foto-ia{width:100%;border-radius:0}
.hero .banco .envase.foto-ia{filter:none}
.hero .banco .e1.foto-ia{width:58%}
.hero .banco .e2.foto-ia{width:42%;right:0}
.hero .banco .e3.foto-ia{width:34%;right:22%;top:-10px}
.banda .envase.foto-ia{mix-blend-mode:normal;filter:none;border-radius:6px;border:2px solid #4a453a;width:86%}
.hero .banco .envase.foto-ia{mix-blend-mode:normal;border:2px solid var(--tinta);border-radius:6px;box-shadow:6px 6px 0 var(--tinta);transform:none}
.hero .banco .e1.foto-ia{width:56%;left:0;bottom:6px;top:auto;right:auto}
.hero .banco .e2.foto-ia{width:40%;right:6px;bottom:30px;top:auto}
.hero .banco .e3.foto-ia{width:34%;right:12%;top:0;transform:rotate(3deg)}