/* ============================================================
   21NEXOS — Sistema de diseño compartido
   Lo que hay aquí lo usan TODAS las páginas del sitio.
   Cambia un color aquí y cambia en toda la web.
   Lo específico de cada página va en su propio <style>.
   ============================================================ */

:root{
  --bg:#04070F;
  --bg-2:#070C18;
  --panel:#0B1120;
  --edge:rgba(255,255,255,.10);
  --edge-2:rgba(255,255,255,.18);
  --blue:#1677FF;
  --blue-2:#4D9BFF;
  --blue-3:#0E63E0;
  --cyan:#36D9FF;
  --green:#5CE89B;
  --text:#EAF0FB;
  --mute:#8C9AB4;
  --soft:#C3CEE2;
  --r:18px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--text);
  font-family:'Manrope',system-ui,sans-serif;
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

/* ---------- estructura ---------- */
.wrap{max-width:1240px;margin:0 auto;padding:0 28px;width:100%}
.narrow{max-width:900px}
section{padding:96px 0;position:relative}
.glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;z-index:0}

/* ---------- tipografía ---------- */
h1,h2,h3{line-height:1.05;letter-spacing:-.035em;font-weight:800;text-wrap:balance}
h1{font-size:clamp(2.5rem,6.2vw,5rem)}
h2{font-size:clamp(1.9rem,4.3vw,3.4rem)}

.mono{
  font-family:'JetBrains Mono',monospace;font-size:.7rem;
  letter-spacing:.18em;text-transform:uppercase;font-weight:700;
}
.grad{
  background:linear-gradient(100deg,var(--blue-2) 0%,var(--cyan) 50%,var(--blue) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;color:var(--blue-2);
  font-family:'JetBrains Mono',monospace;font-size:.7rem;letter-spacing:.2em;
  text-transform:uppercase;font-weight:700;margin-bottom:22px;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--blue)}
.lead{color:var(--mute);font-size:clamp(1rem,1.3vw,1.16rem);max-width:58ch;margin-top:20px}

.head{text-align:center;max-width:760px;margin:0 auto 54px}
.head .lead{margin-left:auto;margin-right:auto}
.head.left{text-align:left;margin-left:0}
.head.left .lead{margin-left:0}
.head.left .eyebrow{justify-content:flex-start}
.head .eyebrow{justify-content:center}

/* ---------- botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:16px 30px;border-radius:999px;font-weight:700;font-size:.96rem;
  border:1px solid transparent;cursor:pointer;font-family:inherit;text-align:center;
  transition:transform .18s,box-shadow .18s,border-color .18s,background .18s;
}
.btn-main{
  background:linear-gradient(100deg,var(--blue),var(--blue-3));color:#fff;
  box-shadow:0 10px 34px -12px rgba(22,119,255,.9);
}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 18px 44px -14px rgba(22,119,255,1)}
.btn-ghost{border-color:var(--edge-2);color:#fff;background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:#fff;transform:translateY(-2px)}
.btn-xl{padding:20px 40px;font-size:1.06rem}

/* ---------- navegación ---------- */
nav{
  position:sticky;top:0;z-index:50;
  background:rgba(4,7,15,.72);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--edge);
}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.12rem;letter-spacing:-.02em}
.brand i{
  font-style:normal;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-size:.82rem;font-weight:800;
}
.nav-links{display:flex;gap:30px;font-size:.92rem;color:var(--mute);font-weight:500}
.nav-links a{transition:color .15s}
.nav-links a:hover,.nav-links a.on{color:#fff}
nav .btn{padding:12px 22px;font-size:.86rem}
/* el CTA repetido dentro del menú solo existe para móvil */
.nav-links .btn{display:none}

/* botón hamburguesa (solo en pantallas pequeñas) */
.burger{
  display:none;width:44px;height:44px;flex:0 0 44px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--edge);
  cursor:pointer;position:relative;
}
.burger span{
  position:absolute;left:12px;right:12px;height:2px;background:#fff;border-radius:2px;
  transition:transform .22s,opacity .18s;
}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:27px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- tarjetas de cristal ---------- */
.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.022));
  border:1px solid var(--edge);border-radius:var(--r);
}

/* ---------- acordeón ---------- */
details{border-bottom:1px solid var(--edge)}
summary{
  list-style:none;cursor:pointer;padding:22px 44px 22px 0;position:relative;
  font-weight:700;font-size:1.02rem;letter-spacing:-.01em;
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"";position:absolute;right:8px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--blue-2);border-bottom:2px solid var(--blue-2);
  transform:translateY(-70%) rotate(45deg);transition:transform .22s;
}
details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
details .a{padding:0 0 24px;color:var(--mute);max-width:70ch}
details .a b{color:var(--text)}

/* ---------- pie ---------- */
footer{border-top:1px solid var(--edge);padding:48px 0 36px;background:var(--bg)}
.foot-top{display:flex;justify-content:space-between;gap:28px 40px;flex-wrap:wrap;align-items:center}
.foot-logo{width:148px;height:auto;opacity:.85}
.foot-links{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:.84rem;color:var(--mute)}
.foot-links a,.foot-links button{
  color:var(--mute);background:none;border:none;padding:0;
  font-family:inherit;font-size:inherit;cursor:pointer;transition:color .15s;
}
.foot-links a:hover,.foot-links button:hover{color:#fff}
.foot-bot{
  margin-top:34px;padding-top:24px;border-top:1px solid var(--edge);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bot .mono{color:#5F6B82}

/* ---------- aviso de cookies ---------- */
.cookie-bar{position:fixed;left:16px;right:16px;bottom:16px;z-index:60;display:none;justify-content:center}
.cookie-bar.show{display:flex}
.cookie-card{
  background:rgba(7,12,24,.96);backdrop-filter:blur(18px);
  border:1px solid var(--edge-2);border-radius:20px;
  box-shadow:0 30px 70px -22px rgba(0,0,0,.9);
  padding:24px;max-width:660px;width:100%;display:flex;flex-direction:column;gap:16px;
}
.cookie-card p{color:var(--mute);font-size:.9rem}
.cookie-card p b{color:#fff}
.cookie-card a{color:var(--blue-2);text-decoration:underline}
.cookie-actions{display:flex;gap:10px;flex-wrap:wrap}
.cookie-actions button{
  flex:1 1 160px;padding:13px 22px;border-radius:999px;font-family:inherit;
  font-size:.9rem;font-weight:700;cursor:pointer;border:1px solid transparent;transition:.15s;
}
.c-accept{background:linear-gradient(100deg,var(--blue),var(--blue-3));color:#fff}
.c-reject{background:transparent;color:#fff;border-color:var(--edge-2)}
.c-reject:hover{border-color:#fff}

/* ---------- aparición al hacer scroll ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s,transform .7s}
.rv.in{opacity:1;transform:none}

/* ---------- accesibilidad ---------- */
a:focus-visible,button:focus-visible,input:focus-visible,
select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--blue-2);outline-offset:3px;border-radius:6px;
}
.oculto{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- responsive compartido ---------- */
@media (max-width:1000px){
  .burger{display:block}
  nav .btn{display:none}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:74px;
    flex-direction:column;gap:0;
    background:rgba(4,7,15,.98);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--edge);padding:8px 0 18px;
  }
  .nav-links.abierto{display:flex}
  .nav-links a{
    padding:15px 28px;font-size:1rem;color:var(--text);
    border-bottom:1px solid var(--edge);
  }
  .nav-links a:last-of-type{border-bottom:none}
  .nav-links .btn{display:inline-flex;margin:16px 28px 0;width:calc(100% - 56px)}
}
@media (max-width:620px){
  section{padding:66px 0}
  .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}