/* =========================================================
   NODO by TGB's — Sistema visual v2 (oscuro + ámbar)
   Compartido por index, privacidad, gracias y 404
   ========================================================= */

:root{
  /* superficies */
  --bg:#0A0D12;
  --bg-2:#0E1218;
  --surface:#131821;
  --surface-2:#1A202B;
  --surface-3:#232A37;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);

  /* texto (todos ≥ 4.5:1 sobre --bg y --surface) */
  --text:#ECEFF3;
  --text-2:#B4BCC8;
  --text-3:#8B95A4;

  /* marca */
  --amber:#F2A93B;
  --amber-hi:#FFC266;
  --amber-ink:#1A1206;
  --amber-soft:rgba(242,169,59,.10);
  --amber-line:rgba(242,169,59,.40);
  --blue:#7FA0C4;
  --blue-deep:#143C64;
  --blue-soft:rgba(127,160,196,.10);
  --ok:#5EE08F;
  --err:#FF8A80;

  /* forma y movimiento */
  --radius:12px;
  --radius-sm:7px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:1180px;

  --font-display:'Space Grotesk', system-ui, sans-serif;
  --font-body:'Inter', system-ui, sans-serif;
  --font-mono:'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

*,*::before,*::after{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-body);
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block; max-width:100%;}
a{color:inherit; text-decoration:none;}
button{font:inherit; color:inherit;}
::selection{background:var(--amber); color:var(--amber-ink);}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-0.02em;
  line-height:1.12;
  color:var(--text);
}
h1,h2{text-transform:uppercase; text-wrap:balance;}

.wrap{max-width:var(--wrap); margin:0 auto; padding:0 32px;}
section[id], footer{scroll-margin-top:84px;}

a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible,
textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible{
  outline:3px solid var(--amber); outline-offset:3px; border-radius:4px;
}

.skip-link{
  position:absolute; left:-9999px; top:12px; z-index:300;
  background:var(--amber); color:var(--amber-ink); padding:12px 20px;
  border-radius:var(--radius-sm); font-weight:700; font-size:14px;
}
.skip-link:focus{left:12px;}

.sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0;}

/* ---------- utilidades visuales ---------- */

/* etiqueta técnica sobre los títulos */
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:12px; font-weight:500;
  letter-spacing:.14em; text-transform:uppercase; color:var(--amber);
  margin-bottom:18px;
}
.eyebrow::before{content:""; width:7px; height:7px; background:var(--amber); border-radius:1px; box-shadow:0 0 12px var(--amber);}

/* textura de plano técnico */
.bp-grid{position:relative; isolation:isolate;}
.bp-grid::before{
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 85%);
          mask-image:radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 85%);
  opacity:.55;
}

/* marcas de esquina tipo plano (inspirado en 21st "feature-08") */
.ticks{position:relative;}
.ticks::after{
  content:""; position:absolute; inset:0; pointer-events:none; border-radius:inherit;
  --c:var(--line-2); --s:12px;
  background:
    linear-gradient(var(--c),var(--c)) top left / var(--s) 1px,
    linear-gradient(var(--c),var(--c)) top left / 1px var(--s),
    linear-gradient(var(--c),var(--c)) top right / var(--s) 1px,
    linear-gradient(var(--c),var(--c)) top right / 1px var(--s),
    linear-gradient(var(--c),var(--c)) bottom left / var(--s) 1px,
    linear-gradient(var(--c),var(--c)) bottom left / 1px var(--s),
    linear-gradient(var(--c),var(--c)) bottom right / var(--s) 1px,
    linear-gradient(var(--c),var(--c)) bottom right / 1px var(--s);
  background-repeat:no-repeat;
}
.ticks:hover::after{--c:var(--amber);}

/* tarjeta base + spotlight que sigue al puntero (inspirado en 21st "spotlight card") */
.card{
  position:relative;
  background:linear-gradient(180deg, var(--surface) 0%, var(--bg-2) 100%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:border-color .25s var(--ease), transform .25s var(--ease);
}
.spot{overflow:hidden;}
.spot::before{
  content:""; position:absolute; inset:0; pointer-events:none; border-radius:inherit;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%), rgba(242,169,59,.10), transparent 45%);
  opacity:0; transition:opacity .3s var(--ease);
}
.spot:hover::before{opacity:1;}
.card:hover{border-color:var(--line-2);}

/* ---------- botones ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  min-height:48px; padding:13px 24px; border-radius:var(--radius-sm);
  font-family:var(--font-body); font-weight:600; font-size:15px; line-height:1.2;
  cursor:pointer; border:1px solid transparent; text-align:center;
  transition:transform .18s var(--ease), box-shadow .25s var(--ease), background .2s, border-color .2s, color .2s;
}
.btn svg{flex:none;}
.btn-primary{background:var(--amber); color:var(--amber-ink); box-shadow:0 0 0 0 rgba(242,169,59,0);}
.btn-primary:hover{background:var(--amber-hi); transform:translateY(-1px); box-shadow:0 10px 30px -8px rgba(242,169,59,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:disabled{opacity:.4; cursor:not-allowed; transform:none; box-shadow:none;}
.btn-ghost{background:rgba(255,255,255,.03); color:var(--text); border-color:var(--line-2);}
.btn-ghost:hover{border-color:var(--amber-line); background:var(--amber-soft);}
.btn .arrow{transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}

.link-u{color:var(--amber); font-weight:600; text-decoration:underline; text-underline-offset:3px; text-decoration-thickness:1px;}
.link-u:hover{color:var(--amber-hi);}

/* ---------- NAV ---------- */
.site-nav{
  position:sticky; top:0; z-index:60;
  background:rgba(10,13,18,.72);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
          backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--line);
}
.site-nav .wrap{display:flex; align-items:center; justify-content:space-between; height:72px; gap:16px;}
.brand{display:flex; align-items:center; gap:12px; flex:none;}
.brand span{font-family:var(--font-display); font-weight:700; font-size:21px; letter-spacing:-0.02em; color:var(--text);}
.brand .brand-tag{
  font-family:var(--font-mono); font-size:10.5px; font-style:normal; font-weight:500; letter-spacing:.12em; color:var(--text-3);
  border-left:1px solid var(--line-2); padding-left:12px; text-transform:uppercase;
}
.nav-links{display:flex; gap:6px; list-style:none;}
.nav-links a{
  display:block; padding:9px 14px; border-radius:var(--radius-sm);
  font-size:14.5px; font-weight:500; color:var(--text-2); white-space:nowrap; transition:color .2s, background .2s;
}
.nav-links a:hover{color:var(--text); background:rgba(255,255,255,.05);}
.nav-right{display:flex; align-items:center; gap:12px;}
.nav-cta{min-height:42px; padding:10px 18px; font-size:14px; white-space:nowrap;}
.nav-login{gap:8px;}
.nav-login svg{flex:none;}
@media (max-width: 1440px){ .nav-login span{display:none;} .nav-login{padding:10px 12px;} }

.lang-switch{
  appearance:none; -webkit-appearance:none; cursor:pointer;
  background-color:transparent; border:1px solid var(--line-2); border-radius:var(--radius-sm);
  padding:8px 30px 8px 12px; min-height:44px;
  font-family:var(--font-mono); font-size:13px; font-weight:500; color:var(--text);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23B4BCC8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 9px center; background-size:12px;
}
.lang-switch option{background:var(--surface); color:var(--text);}
body.lang-ja, body.lang-ja h1, body.lang-ja h2, body.lang-ja h3,
body.lang-ja .brand span, body.lang-ja button, body.lang-ja input, body.lang-ja select{
  font-family:'Noto Sans JP', 'Inter', sans-serif !important; letter-spacing:normal !important;
}

.nav-toggle{
  display:none; width:46px; height:46px; border:1px solid var(--line-2); border-radius:var(--radius-sm);
  background:transparent; cursor:pointer; flex-direction:column; align-items:center; justify-content:center; gap:5px; flex:none;
}
.nav-toggle span{display:block; width:20px; height:2px; background:var(--text); transition:transform .2s, opacity .2s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-mobile{
  display:none; flex-direction:column; padding:8px 20px 22px; gap:2px;
  background:var(--bg); border-top:1px solid var(--line);
}
.nav-mobile a{display:block; padding:15px 4px; font-size:16px; font-weight:500; color:var(--text-2); border-bottom:1px solid var(--line);}
.nav-mobile .nav-mobile-cta{
  margin-top:16px; background:var(--amber); color:var(--amber-ink); text-align:center;
  border-radius:var(--radius-sm); font-weight:700; border-bottom:none; padding:15px 20px;
}
.nav-mobile[hidden]{display:none;}
.nav-mobile.open{display:flex;}

/* barra de progreso de lectura (inspirado en 21st "scroll progress") */
.scroll-progress{
  position:absolute; left:0; bottom:-1px; height:2px; width:100%;
  background:linear-gradient(90deg, var(--amber), var(--amber-hi));
  transform-origin:0 50%; transform:scaleX(var(--p,0));
  box-shadow:0 0 10px rgba(242,169,59,.6);
}

/* ---------- FOOTER ---------- */
.site-footer{background:var(--bg); border-top:1px solid var(--line); padding:72px 0 36px; color:var(--text-2); position:relative; overflow:hidden;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px;}
.footer-brand p{margin-top:18px; font-size:14px; color:var(--text-3); max-width:32ch;}
.site-footer h5, .site-footer h3{
  font-family:var(--font-mono); font-size:11.5px; font-weight:500; letter-spacing:.14em; text-transform:uppercase;
  color:var(--text-3); margin-bottom:16px;
}
.site-footer .col a, .site-footer .col p{display:block; font-size:14.5px; color:var(--text-2); margin-bottom:9px; transition:color .2s;}
.site-footer .col a:hover{color:var(--amber);}
.site-footer .col .footer-cobertura{font-size:13px; color:var(--text-3);}
.social{display:flex; gap:10px;}
.site-footer .col .social a{
  display:flex; align-items:center; justify-content:center; width:44px; height:44px; margin:0;
  border-radius:var(--radius-sm); border:1px solid var(--line-2); transition:border-color .2s, background .2s;
}
.site-footer .col .social a:hover{border-color:var(--amber); background:var(--amber-soft);}
.footer-bottom{
  margin-top:56px; padding-top:24px; border-top:1px solid var(--line);
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:13px; color:var(--text-3);
}
.footer-bottom .mono{font-family:var(--font-mono); font-size:12px; letter-spacing:.06em;}
.footer-word{
  position:absolute; right:-10px; bottom:-48px; pointer-events:none; user-select:none;
  font-family:var(--font-display); font-weight:700; font-size:clamp(120px, 20vw, 260px); line-height:1;
  color:transparent; -webkit-text-stroke:1px rgba(255,255,255,.05); letter-spacing:-0.04em;
}

/* ---------- flotantes ---------- */
.whatsapp-float{
  position:fixed; bottom:24px; right:24px; z-index:100;
  width:58px; height:58px; border-radius:50%; background:#25D366;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 24px rgba(0,0,0,.45); transition:transform .2s var(--ease);
}
.whatsapp-float:hover{transform:scale(1.07);}
.back-to-top{
  position:fixed; bottom:94px; right:30px; z-index:100;
  width:46px; height:46px; border-radius:50%; background:var(--surface-2); border:1px solid var(--line-2);
  display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transform:translateY(8px);
  transition:opacity .2s ease, transform .2s ease, border-color .2s;
}
.back-to-top.show{opacity:1; pointer-events:auto; transform:translateY(0);}
.back-to-top:hover{border-color:var(--amber);}

/* ---------- aparición al hacer scroll ---------- */
.js [data-reveal]{opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease); transition-delay:var(--d,0s);}
.js [data-reveal].in{opacity:1; transform:none;}

/* ---------- responsive base ---------- */
/* Con 5 enlaces el menú ya no cabe abajo de 1100px: se usa el menú de hamburguesa */
@media (max-width: 1100px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
}
@media (max-width: 960px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .brand .brand-tag{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width: 480px){
  .wrap{padding:0 20px;}
  .site-nav .wrap{height:64px;}
  .brand span{font-size:19px;}
  .footer-grid{grid-template-columns:1fr; gap:32px;}
  .whatsapp-float{bottom:18px; right:18px;}
  .back-to-top{bottom:86px; right:24px;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important;}
  .js [data-reveal]{opacity:1; transform:none;}
}