/* DATASETBI — Componentes compartidos: base, nav global, botones, footer, WhatsApp flotante.
   Requiere tokens.css cargado antes. El CSS propio de cada página va aparte, en su <style>. */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(92%,var(--max-w));margin:0 auto}

/* ============ NAV GLOBAL ============ */
.nav{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border)}
.nav .container{display:flex;align-items:center;justify-content:space-between;padding:.9rem 0;gap:1rem}
.nav-brand img{height:2.4rem;width:auto}
.nav-links{display:flex;gap:1.5rem;align-items:center}
.nav-item{position:relative}
.nav-link{font-size:.9rem;font-weight:600;color:var(--text-secondary);transition:color .2s;background:none;border:none;cursor:pointer;font-family:var(--font);padding:0;display:flex;align-items:center;gap:.3rem}
.nav-link:hover{color:var(--accent)}
.nav-cta{padding:.55rem 1.4rem;border-radius:99rem;background:var(--gradient);color:#fff!important;font-weight:700;font-size:.88rem;transition:transform .2s,box-shadow .2s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow);color:#fff!important}

.nav-dropdown-btn::after{content:"";width:.4rem;height:.4rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-.2rem;transition:transform .2s}
.nav-item.is-open .nav-dropdown-btn::after{transform:rotate(-135deg);margin-top:.15rem}
.nav-dropdown{position:absolute;top:calc(100% + .9rem);left:50%;transform:translateX(-50%);min-width:16.5rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:.5rem;display:none;flex-direction:column;gap:.1rem}
.nav-item.is-open .nav-dropdown{display:flex}
.nav-dropdown-link{display:flex;flex-direction:column;gap:.1rem;padding:.6rem .8rem;border-radius:.6rem;transition:background .15s}
.nav-dropdown-link:hover{background:var(--bg-accent)}
.nav-dropdown-link strong{font-size:.88rem;font-weight:700;color:var(--text)}
.nav-dropdown-link span{font-size:.78rem;color:var(--text-muted)}
.nav-dropdown-link.is-active{background:var(--bg-accent)}
.nav-dropdown-link.is-active strong{color:var(--accent)}
.nav-dropdown-divider{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);padding:.6rem .8rem .1rem}

.nav-toggle{display:none;flex-direction:column;gap:.3rem;background:none;border:none;cursor:pointer;padding:.4rem}
.nav-toggle span{width:1.5rem;height:2px;background:var(--text);border-radius:2px}

@media(max-width:56em){
  .nav-toggle{display:flex}
  .nav-links{position:fixed;top:4.05rem;left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:stretch;padding:1.5rem;gap:.2rem;overflow-y:auto;display:none}
  .nav-links.is-open{display:flex}
  .nav-item{width:100%}
  .nav-link{width:100%;padding:.85rem .2rem;border-bottom:1px solid var(--border);justify-content:space-between}
  .nav-dropdown{position:static;transform:none;box-shadow:none;border:none;display:none;margin:0 0 .3rem .4rem;padding:0}
  .nav-item.is-open .nav-dropdown{display:flex}
  .nav-cta{text-align:center;justify-content:center;margin-top:.7rem}
}

/* ============ BOTONES ============ */
.btn-primary{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 2.2rem;border-radius:99rem;background:var(--gradient);color:#fff;font-weight:800;font-size:1rem;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;box-shadow:var(--shadow-md);font-family:var(--font)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}
.btn-outline{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 2.2rem;border-radius:99rem;background:var(--bg-white);color:var(--text);font-weight:700;font-size:1rem;border:1px solid var(--border);cursor:pointer;transition:border-color .2s,box-shadow .2s;font-family:var(--font)}
.btn-outline:hover{border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,165,233,.08)}
.btn-whatsapp{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 2.2rem;border-radius:99rem;background:linear-gradient(135deg,#25d366,#128c7e);color:#fff;font-weight:800;font-size:1rem;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 15px rgba(37,211,102,.2);font-family:var(--font)}
.btn-whatsapp:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(37,211,102,.3)}

/* ============ FOOTER GLOBAL ============ */
.footer{padding:3.2rem 0 0;border-top:1px solid var(--border);background:var(--bg-white);color:var(--text-secondary)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem;padding-bottom:2.4rem}
.footer-brand img{height:2rem;margin-bottom:.8rem}
.footer-brand p{font-size:.86rem;color:var(--text-muted);max-width:19rem;line-height:1.55}
.footer-col{display:flex;flex-direction:column;align-items:flex-start;gap:.55rem}
.footer-col h4{font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:.35rem}
.footer-col a{font-size:.9rem;color:var(--text-secondary);transition:color .15s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{padding:1.3rem 0;border-top:1px solid var(--border);margin-top:.4rem;text-align:center;color:var(--text-muted);font-size:.82rem}
@media(max-width:48em){
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem 1.5rem}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:30em){.footer-grid{grid-template-columns:1fr}}

/* ============ WHATSAPP FLOTANTE ============ */
.wa-float{position:fixed;right:1.2rem;bottom:1.2rem;z-index:40;width:3.6rem;height:3.6rem;border-radius:50%;background:linear-gradient(135deg,#25d366,#128c7e);display:flex;align-items:center;justify-content:center;box-shadow:0 .5rem 2rem rgba(37,211,102,.3);transition:transform .2s;animation:waPulse 2.5s ease-in-out infinite}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:1.8rem;height:1.8rem;fill:#fff}
@keyframes waPulse{0%,100%{box-shadow:0 .5rem 2rem rgba(37,211,102,.3)}50%{box-shadow:0 .5rem 2rem rgba(37,211,102,.15),0 0 0 .6rem rgba(37,211,102,.08)}}

@media (prefers-reduced-motion: reduce){
  .wa-float{animation:none}
  html{scroll-behavior:auto}
}