/* ============================================================
   Lattice IA — latticeia.com
   Sistema visual tomado de "Identidad visual Lattice IA" v1.0
   ============================================================ */

:root{
  /* Primarios */
  --ink:#0B1A3B;          /* Deep Ink */
  --blue:#3E8EFF;         /* Electric Blue */
  --paper:#F6F8FB;        /* Paper */
  /* Secundarios y neutros */
  --lattice:#1E3A8A;      /* Lattice Blue */
  --cyan:#46C6E8;         /* Signal Cyan */
  --slate:#5B6B87;        /* Slate */
  --line:#E4E8F1;         /* Line */
  --white:#fff;
  /* Derivados */
  --text:#37435E;         /* cuerpo sobre Paper — 9.2:1 */
  --ink-80:rgba(11,26,59,.8);
  --node:var(--blue);     /* el nodo eléctrico solo en versión a color */

  --font-display:'Space Grotesk',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --font-body:'IBM Plex Sans',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  --wrap:1180px;
  --gutter:clamp(20px,5vw,48px);
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;

  --shadow-sm:0 1px 2px rgba(11,26,59,.05),0 10px 26px -14px rgba(11,26,59,.22);
  --shadow-md:0 2px 4px rgba(11,26,59,.04),0 28px 56px -28px rgba(11,26,59,.3);
  --ease:cubic-bezier(.22,1,.36,1);
}

/* ── Reset ─────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  font-family:var(--font-body);
  font-weight:400;
  font-size:1.0625rem;      /* 17px */
  line-height:1.65;         /* 17/28 */
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:var(--lattice);text-decoration-thickness:1px;text-underline-offset:3px}
ul{list-style:none;padding:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:where(a,button,summary):focus-visible{
  outline:2px solid var(--blue);
  outline-offset:3px;
  border-radius:4px;
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
[hidden]{display:none!important}
.skip{
  position:absolute;left:var(--gutter);top:-100px;z-index:100;
  background:var(--ink);color:var(--paper);padding:.7rem 1.1rem;border-radius:var(--r-sm);
  font-family:var(--font-mono);font-size:.8125rem;text-decoration:none;
  transition:top .2s var(--ease);
}
.skip:focus{top:14px}

/* ── Tipografía ────────────────────────────────────────── */
h1,h2,h3{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;color:var(--ink);text-wrap:balance}
h1{font-size:clamp(2.3rem,5.6vw,4rem);line-height:1.06;letter-spacing:-.035em}
h2{font-size:clamp(1.55rem,3.4vw,2.1rem);line-height:1.16}
h3{font-size:1.1875rem;line-height:1.3;font-weight:600}

.eyebrow{
  font-family:var(--font-mono);font-weight:500;
  font-size:.8125rem;                 /* 13px */
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue);
}
.eyebrow-dark{color:var(--lattice)}
.lead{
  font-weight:300;
  font-size:clamp(1.0625rem,1.6vw,1.1875rem);
  line-height:1.6;
}
strong{font-weight:600}

/* ── Layout ────────────────────────────────────────────── */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(64px,9vw,116px)}
.section-alt{background:var(--white);border-block:1px solid var(--line)}
.sec-head{max-width:56ch;margin-bottom:clamp(36px,5vw,60px)}
.sec-head h2{margin-top:.6rem}
.sec-sub{margin-top:1rem;font-weight:300;color:var(--slate)}

/* ── Botones ───────────────────────────────────────────── */
.btn{
  --btn-bg:var(--blue);--btn-fg:var(--ink);--btn-bd:transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--font-display);font-weight:600;font-size:.9375rem;letter-spacing:-.01em;
  padding:.85rem 1.4rem;border-radius:var(--r-sm);
  background:var(--btn-bg);color:var(--btn-fg);border:1px solid var(--btn-bd);
  text-decoration:none;white-space:nowrap;
  transition:transform .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-sm{padding:.6rem 1.05rem;font-size:.875rem}
.btn-primary{box-shadow:0 10px 30px -12px rgba(62,142,255,.7)}
.btn-primary:hover{background:#5c9fff}
.btn-ghost{--btn-bg:transparent;--btn-fg:var(--paper);--btn-bd:rgba(246,248,251,.28)}
.btn-ghost:hover{--btn-bd:var(--blue);background:rgba(62,142,255,.1)}

/* ── Marca ─────────────────────────────────────────────── */
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:inherit}
.mark{width:30px;height:30px;flex:none}
.brand-name{
  font-family:var(--font-display);font-weight:500;font-size:1.0625rem;
  letter-spacing:-.01em;color:currentColor;
}

/* ── Nav ───────────────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:50;
  color:var(--paper);
  background:rgba(11,26,59,0);
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.nav.is-stuck{
  background:rgba(11,26,59,.86);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:rgba(62,142,255,.2);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;min-height:74px}
.nav-links{display:flex;align-items:center;gap:clamp(1rem,2.4vw,2rem)}
.nav-links>a:not(.btn){
  font-size:.9375rem;color:rgba(246,248,251,.82);text-decoration:none;
  transition:color .2s var(--ease);
}
.nav-links>a:not(.btn):hover{color:var(--white)}
.nav-toggle{display:none;width:44px;height:44px;margin-right:-10px;place-items:center;position:relative}
.nav-toggle .bar{
  position:absolute;left:12px;width:20px;height:1.8px;border-radius:2px;background:var(--paper);
  transition:transform .3s var(--ease),opacity .2s var(--ease);
}
.nav-toggle .bar:first-of-type{transform:translateY(-4px)}
.nav-toggle .bar:last-of-type{transform:translateY(4px)}
.nav-toggle[aria-expanded=true] .bar:first-of-type{transform:rotate(45deg)}
.nav-toggle[aria-expanded=true] .bar:last-of-type{transform:rotate(-45deg)}

/* ── Hero ──────────────────────────────────────────────── */
.hero{
  position:relative;isolation:isolate;overflow:hidden;
  background:
    radial-gradient(120% 90% at 50% -10%,rgba(62,142,255,.28),transparent 62%),
    radial-gradient(80% 60% at 88% 8%,rgba(70,198,232,.16),transparent 60%),
    var(--ink);
  color:var(--paper);
  padding-top:clamp(56px,10vw,104px);
  padding-bottom:clamp(48px,6vw,72px);
  margin-top:-74px;padding-top:calc(74px + clamp(56px,10vw,104px));
}
.mesh{position:absolute;inset:0;z-index:-1;pointer-events:none}
.mesh svg{width:100%;height:100%}
.nodes circle{fill:var(--cyan);opacity:.25;animation:pulse 5.5s var(--ease) infinite}
.nodes circle:nth-child(2){animation-delay:.7s;fill:var(--blue)}
.nodes circle:nth-child(3){animation-delay:1.4s}
.nodes circle:nth-child(4){animation-delay:2.1s;fill:var(--blue)}
.nodes circle:nth-child(5){animation-delay:2.8s}
.nodes circle:nth-child(6){animation-delay:3.5s;fill:var(--blue)}
.nodes circle:nth-child(7){animation-delay:4.2s}
.nodes circle:nth-child(8){animation-delay:4.9s;fill:var(--blue)}
@keyframes pulse{
  0%,100%{opacity:.18;transform:scale(.9)}
  50%{opacity:.95;transform:scale(1.25)}
}
.nodes circle{transform-box:fill-box;transform-origin:center}

/* .hero-inner también es .wrap: no le pongas max-width o se centra
   y se desalinea del nav y de las tarjetas de abajo. */
.hero-inner{position:relative;padding-block:clamp(24px,5vw,44px)}
.hero-inner h1{color:var(--paper);margin-top:1.1rem;max-width:26ch}
.hero-inner h1 em{font-style:normal;color:var(--blue)}
.hero-inner .lead{margin-top:1.5rem;max-width:56ch;color:rgba(246,248,251,.78)}
.hero-inner .lead strong{color:var(--paper)}
.cta-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2.1rem}

.hero-strip{
  position:relative;display:grid;gap:.75rem;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  margin-top:clamp(32px,5vw,56px);
}
.strip-item{
  display:grid;gap:.2rem;
  padding:1.1rem 1.3rem;
  border:1px solid rgba(246,248,251,.14);border-radius:var(--r-md);
  background:rgba(246,248,251,.04);
  text-decoration:none;color:var(--paper);
  transition:border-color .25s var(--ease),background-color .25s var(--ease),transform .25s var(--ease);
}
.strip-item:hover{border-color:rgba(62,142,255,.55);background:rgba(62,142,255,.08);transform:translateY(-2px)}
.strip-name{font-family:var(--font-display);font-weight:600;font-size:1.0625rem}
.strip-cat{font-size:.875rem;color:rgba(246,248,251,.62)}
.strip-go{
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;
  color:var(--blue);margin-top:.35rem;
}

/* ── Productos ─────────────────────────────────────────── */
.products{display:grid;gap:clamp(20px,2.5vw,28px);grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.product{
  display:flex;flex-direction:column;
  padding:clamp(24px,3vw,36px);
  background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease);
}
.product:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#cfd9ea}
.product-top{padding-bottom:1.25rem}
.product-icon{
  display:grid;place-items:center;width:46px;height:46px;margin-bottom:1.1rem;
  border-radius:var(--r-sm);background:rgba(62,142,255,.1);color:var(--lattice);
}
.product-icon svg{width:24px;height:24px}
.product:nth-child(2) .product-icon{background:rgba(70,198,232,.14)}
.product-cat{
  font-family:var(--font-mono);font-weight:500;font-size:.75rem;
  letter-spacing:.13em;text-transform:uppercase;color:var(--slate);
}
.product-top h3{margin-top:.4rem;font-size:clamp(1.5rem,2.4vw,1.75rem);font-weight:700;letter-spacing:-.025em}
.product-lead{font-weight:300;color:var(--text)}
.product-list{display:grid;gap:.7rem;margin-top:1.4rem;padding-top:1.4rem;border-top:1px solid var(--line)}
.product-list li{position:relative;padding-left:1.6rem;font-size:.9375rem;line-height:1.55}
.product-list li::before{
  content:"";position:absolute;left:.15rem;top:.55rem;
  width:7px;height:7px;border-radius:50%;background:var(--blue);
}
.product-foot{
  margin-top:auto;padding-top:1.6rem;
  display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:1rem;
}
.price{font-size:.9375rem;color:var(--slate);display:grid}
.price strong{font-family:var(--font-display);font-size:1.125rem;color:var(--ink);font-weight:700}
.price-alt{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.04em;margin-top:.35rem}
.link-go{
  font-family:var(--font-display);font-weight:600;font-size:.9375rem;
  color:var(--lattice);text-decoration:none;white-space:nowrap;
  display:inline-flex;gap:.4rem;align-items:center;
}
.link-go:hover{text-decoration:underline}
.link-go span{transition:transform .25s var(--ease)}
.link-go:hover span{transform:translate(2px,-2px)}

/* ── Pilares ───────────────────────────────────────────── */
.pillars{display:grid;gap:clamp(24px,3vw,36px);grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.pillar-icon{
  display:grid;place-items:center;width:48px;height:48px;margin-bottom:1.2rem;
  border-radius:var(--r-sm);
  background:linear-gradient(150deg,rgba(62,142,255,.14),rgba(70,198,232,.1));
  color:var(--lattice);
}
.pillar-icon svg{width:24px;height:24px}
.pillar h3{margin-bottom:.6rem}
.pillar p{font-size:.9375rem;line-height:1.62;color:var(--slate)}

/* ── Confianza ─────────────────────────────────────────── */
.trust{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.trust-item{background:var(--white);padding:clamp(22px,2.6vw,32px)}
.trust-num{
  font-family:var(--font-mono);font-weight:500;font-size:.75rem;letter-spacing:.14em;
  color:var(--blue);
}
.trust-item h3{margin:.7rem 0 .5rem;font-size:1.0625rem}
.trust-item p{font-size:.9375rem;line-height:1.6;color:var(--slate)}

/* ── CTA ───────────────────────────────────────────────── */
.cta{
  background:
    radial-gradient(100% 120% at 15% 0%,rgba(30,58,138,.85),transparent 60%),
    radial-gradient(90% 100% at 90% 100%,rgba(70,198,232,.18),transparent 60%),
    var(--ink);
  color:var(--paper);
  padding-block:clamp(64px,9vw,110px);
}
.cta-inner h2{color:var(--paper);margin-top:.9rem;max-width:24ch}
.cta-inner .lead{margin-top:1.2rem;max-width:56ch;color:rgba(246,248,251,.78)}

/* ── Footer ────────────────────────────────────────────── */
.footer{background:var(--ink);color:rgba(246,248,251,.72);border-top:1px solid rgba(62,142,255,.16)}
.footer-inner{
  display:grid;gap:clamp(32px,4vw,48px);
  grid-template-columns:1.4fr repeat(3,minmax(140px,1fr));
  padding-block:clamp(48px,6vw,72px);
}
.footer .brand{color:var(--paper)}
.footer-tag{
  margin-top:1.1rem;font-family:var(--font-display);font-weight:500;
  font-size:1rem;line-height:1.4;color:rgba(246,248,251,.6);
}
.footer-col h2{
  font-size:.75rem;font-family:var(--font-mono);font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:1rem;
}
.footer-col ul{display:grid;gap:.6rem}
.footer-col a{font-size:.9375rem;color:rgba(246,248,251,.72);text-decoration:none;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--paper);text-decoration:underline}
.footer-place{font-size:.9375rem;color:rgba(246,248,251,.48);line-height:1.5}
.footer-base{
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;
  padding-block:1.4rem;border-top:1px solid rgba(246,248,251,.09);
  font-size:.8125rem;color:rgba(246,248,251,.45);
}
.footer-mono{font-family:var(--font-mono);letter-spacing:.06em}

/* ── Reveal ─────────────────────────────────────────────
   Solo se oculta si hay JS: sin JS todo se ve normal.     */
.js .reveal{opacity:0;transform:translateY(16px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal:nth-child(2).in{transition-delay:.06s}
.js .reveal:nth-child(3).in{transition-delay:.12s}
.js .reveal:nth-child(4).in{transition-delay:.18s}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width:900px){
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:760px){
  .nav-toggle{display:grid}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:.25rem;
    padding:.75rem var(--gutter) 1.4rem;
    background:rgba(11,26,59,.97);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(62,142,255,.2);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links>a:not(.btn){padding:.7rem 0;border-bottom:1px solid rgba(246,248,251,.08)}
  .nav-links>.btn{margin-top:.9rem;justify-content:center}
  .nav.is-open{background:rgba(11,26,59,.97);backdrop-filter:blur(14px)}
  .product-foot{flex-direction:column;align-items:start}
}
@media (max-width:480px){
  .btn{width:100%}
  .cta-row .btn,.hero-inner .btn{flex:1 1 100%}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
  .nodes circle{opacity:.5}
}