/* ===========================================================
   AgenBooks — Design System compartido (shared/brand.css)
   Marca única, 3 posicionamientos (.es / .com / .net)
   =========================================================== */
:root{
  --ab-ink:#0b1b2b;        /* azul tinta casi negro */
  --ab-navy:#12315a;       /* azul corporativo */
  --ab-blue:#1f6feb;       /* azul acción */
  --ab-cyan:#25d0c0;       /* acento agéntico */
  --ab-violet:#7b5cff;     /* acento IA */
  --ab-bg:#ffffff;
  --ab-bg-soft:#f5f8fc;
  --ab-bg-dark:#0b1b2b;
  --ab-line:#e2e9f2;
  --ab-gray:#5b6b7f;
  --ab-gray-2:#8a99ad;
  --ab-white:#ffffff;
  --ab-ok:#1faa63;
  --ab-warn:#e0a300;
  --ab-radius:16px;
  --ab-radius-sm:10px;
  --ab-shadow:0 10px 40px rgba(11,27,43,.10);
  --ab-shadow-sm:0 4px 16px rgba(11,27,43,.08);
  --ab-max:1180px;
  --ab-font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --ab-serif:'Fraunces','Playfair Display',Georgia,serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ab-font);color:var(--ab-ink);background:var(--ab-bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--ab-max);margin:0 auto;padding:0 24px}
section{padding:88px 0}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;color:var(--ab-ink)}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.5vw,2.6rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
p.lead{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--ab-gray)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ab-blue);margin-bottom:14px}
.muted{color:var(--ab-gray)}
/* Botones */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:1rem;padding:14px 26px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--ab-blue);color:#fff}
.btn-primary:hover{background:#1a5fd0;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--ab-line);color:var(--ab-ink)}
.btn-ghost:hover{border-color:var(--ab-blue);color:var(--ab-blue)}
.btn-light{background:#fff;color:var(--ab-navy)}
.btn-lg{padding:17px 34px;font-size:1.08rem}
/* Header */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--ab-line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.22rem;letter-spacing:-.02em}
.brand .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--ab-blue),var(--ab-cyan));display:grid;place-items:center;color:#fff;font-weight:800;font-size:.95rem}
.brand .tld{color:var(--ab-blue)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:.95rem;color:var(--ab-gray);font-weight:500}
.nav-links a:hover{color:var(--ab-ink)}
.nav-cta{display:flex;align-items:center;gap:12px}
/* Selector idioma */
.lang{position:relative}
.lang select{appearance:none;border:1px solid var(--ab-line);background:#fff;border-radius:999px;padding:8px 30px 8px 14px;font-size:.9rem;font-weight:600;color:var(--ab-ink);cursor:pointer;font-family:inherit}
.lang::after{content:"▾";position:absolute;right:12px;top:50%;transform:translateY(-50%);pointer-events:none;color:var(--ab-gray);font-size:.8rem}
/* Hero */
.hero{padding:96px 0 72px;background:radial-gradient(1200px 500px at 70% -10%,rgba(37,208,192,.12),transparent),radial-gradient(900px 500px at 10% 0%,rgba(31,111,235,.10),transparent)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1 span{background:linear-gradient(120deg,var(--ab-blue),var(--ab-violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin:22px 0 30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-trust{margin-top:26px;font-size:.85rem;color:var(--ab-gray-2)}
/* Visual card */
.mock{background:#fff;border:1px solid var(--ab-line);border-radius:var(--ab-radius);box-shadow:var(--ab-shadow);overflow:hidden}
.mock-top{display:flex;gap:6px;padding:12px 16px;border-bottom:1px solid var(--ab-line);background:var(--ab-bg-soft)}
.mock-top i{width:11px;height:11px;border-radius:50%;background:#dbe3ee;display:block}
.mock-body{padding:20px}
.flow{display:flex;flex-direction:column;gap:12px}
.flow-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--ab-line);border-radius:var(--ab-radius-sm);background:#fff;font-size:.9rem}
.flow-row .ico{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:1.1rem;flex-shrink:0}
.flow-arrow{text-align:center;color:var(--ab-cyan);font-size:1.2rem}
.tag{display:inline-block;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:999px;background:rgba(37,208,192,.15);color:#0d8577;margin-left:auto}
/* Logos / trust bar */
.trustbar{padding:36px 0;border-top:1px solid var(--ab-line);border-bottom:1px solid var(--ab-line);background:var(--ab-bg-soft)}
.trustbar .wrap{display:flex;align-items:center;justify-content:center;gap:40px;flex-wrap:wrap;opacity:.75;font-weight:700;color:var(--ab-gray-2);font-size:.95rem}
/* Features grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card{background:#fff;border:1px solid var(--ab-line);border-radius:var(--ab-radius);padding:30px;transition:.2s}
.card:hover{box-shadow:var(--ab-shadow);transform:translateY(-3px);border-color:transparent}
.card .ci{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:1.4rem;margin-bottom:18px;background:linear-gradient(135deg,rgba(31,111,235,.12),rgba(37,208,192,.12))}
.card h3{margin-bottom:8px}
.card p{font-size:.95rem;color:var(--ab-gray)}
/* Section headers */
.sec-head{text-align:center;max-width:720px;margin:0 auto 54px}
.sec-head p{margin-top:14px}
/* Steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding:28px 22px;border:1px solid var(--ab-line);border-radius:var(--ab-radius);background:#fff}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-16px;left:22px;width:34px;height:34px;border-radius:50%;background:var(--ab-blue);color:#fff;display:grid;place-items:center;font-weight:800}
.step h3{margin:8px 0 6px;font-size:1.08rem}
.step p{font-size:.9rem;color:var(--ab-gray)}
/* Pricing */
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price{border:1px solid var(--ab-line);border-radius:var(--ab-radius);padding:32px;background:#fff;display:flex;flex-direction:column}
.price.feat{border-color:var(--ab-blue);box-shadow:var(--ab-shadow);position:relative}
.price.feat .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--ab-blue);color:#fff;font-size:.72rem;font-weight:700;padding:5px 14px;border-radius:999px;text-transform:uppercase;letter-spacing:.06em}
.price .amt{font-size:2.6rem;font-weight:800;margin:12px 0 4px}
.price .amt small{font-size:.95rem;font-weight:500;color:var(--ab-gray)}
.price ul{list-style:none;margin:20px 0 26px;display:flex;flex-direction:column;gap:11px}
.price li{font-size:.92rem;padding-left:26px;position:relative;color:var(--ab-ink)}
.price li::before{content:"✓";position:absolute;left:0;color:var(--ab-ok);font-weight:800}
.price .btn{margin-top:auto;justify-content:center}
/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--ab-navy),var(--ab-ink));color:#fff;border-radius:24px;padding:60px;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.8);margin:14px auto 28px;max-width:560px}
/* Dark section */
.dark{background:var(--ab-bg-dark);color:#cdd8e6}
.dark h2,.dark h3{color:#fff}
.dark .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.1)}
.dark .card p{color:#a9b8cb}
/* Onboarding form */
.form-card{background:#fff;border:1px solid var(--ab-line);border-radius:var(--ab-radius);box-shadow:var(--ab-shadow);padding:34px}
.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.form-row label{font-size:.85rem;font-weight:600;color:var(--ab-ink)}
.form-row input,.form-row select,.form-row textarea{border:1px solid var(--ab-line);border-radius:var(--ab-radius-sm);padding:12px 14px;font-family:inherit;font-size:.95rem}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--ab-blue)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
/* Footer */
footer.ft{background:var(--ab-ink);color:#9fb0c4;padding:64px 0 34px}
footer.ft .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
footer.ft h4{color:#fff;font-size:.95rem;margin-bottom:16px}
footer.ft a{display:block;font-size:.9rem;color:#9fb0c4;margin-bottom:10px}
footer.ft a:hover{color:#fff}
footer.ft .bot{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.85rem}
.badge-net{display:inline-block;background:rgba(123,92,255,.15);color:#b9a8ff;font-size:.72rem;font-weight:700;padding:4px 10px;border-radius:999px}
/* Responsive */
@media(max-width:900px){
  .hero-grid,.grid-3,.grid-2,.steps,.prices{grid-template-columns:1fr}
  .steps{gap:32px}.step{margin-top:8px}
  footer.ft .cols{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .cta-band{padding:40px 24px}
  .form-grid{grid-template-columns:1fr}
  section{padding:60px 0}
}
[data-i18n]{transition:opacity .15s}