:root{
  --blue-paic:#1e3a8a;
  --cyan:#06b6d4;
  --white:#ffffff;
  --text:#1f2937;
  --cta:#f59e0b;
  --danger:#dc2626;
  --container-max:1100px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;color:var(--text);background:var(--white);}
.container{max-width:var(--container-max);margin:0 auto;padding:1rem}
.site-header{background:linear-gradient(90deg,var(--blue-paic),#25409b);color:var(--white);}
.nav-row{display:flex;align-items:center;gap:1rem;justify-content:space-between;padding:0.8rem 1rem}
.brand{display:flex;align-items:center;gap:0.6rem;font-weight:800;font-size:1.15rem}
.site-logo{height:36px;width:auto;border-radius:8px;box-shadow:0 6px 20px rgba(6,182,212,0.12);background:linear-gradient(180deg,rgba(255,255,255,0.7),rgba(255,255,255,0.6));padding:4px}
.brand-text{font-weight:800;color:var(--white)}
.main-nav a{color:rgba(255,255,255,0.9);text-decoration:none;margin:0 0.6rem}
.btn{display:inline-block;padding:0.6rem 1rem;border-radius:0.75rem;text-decoration:none;font-weight:600}
.btn.cta{background:transparent;border:1px solid rgba(255,255,255,0.12);color:var(--white)}
.primary-cta{background:var(--cta);color:var(--text);box-shadow:0 10px 30px rgba(0,0,0,0.15);border-radius:1rem}
.secondary{background:transparent;border:1px solid rgba(31,41,55,0.06);color:var(--blue-paic)}

/* Pulso sutil para botones de prueba de 14 días */
@keyframes paic-pulse {
  0% { transform: translateY(0) scale(1); box-shadow: 0 10px 30px rgba(245,158,11,0.10); }
  50% { transform: translateY(-4px) scale(1.03); box-shadow: 0 26px 60px rgba(245,158,11,0.16); }
  100% { transform: translateY(0) scale(1); box-shadow: 0 10px 30px rgba(245,158,11,0.10); }
}

.btn.cta, .primary-cta{
  will-change: transform, box-shadow;
  animation: paic-pulse 3.6s ease-in-out infinite;
}

.btn.cta:hover, .primary-cta:hover{
  animation-play-state:paused;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 30px 60px rgba(30,58,138,0.14);
}

/* Respeta usuarios que prefieren reducir movimiento */
@media (prefers-reduced-motion: reduce){
  .btn.cta, .primary-cta{ animation: none !important; }
}

.hero{position:relative;padding:3rem 0 4rem;overflow:hidden}
.hero.alt{background:linear-gradient(180deg,rgba(30,58,138,0.04),transparent)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center}
.hero-text h1{font-size:2rem;margin:0 0 0.5rem;color:var(--blue-paic);font-weight:800}
.hero-text .lead{color:var(--text);margin-bottom:1rem}
.benefits{list-style:none;padding:0;margin:0 0 1rem}
.benefits li{margin:0.4rem 0}
.hero-media{display:flex;flex-direction:column;gap:1rem}
.hero-image{width:100%;height:auto;border-radius:12px;box-shadow:0 8px 30px rgba(31,41,55,0.08);transition:transform .18s ease,box-shadow .18s ease}

/* Efecto uniforme para imágenes: sombra, borde redondeado y elevación al hover */
.media-card img, .hero-image, .card img, .site-logo{
  border-radius:12px;
  box-shadow:0 10px 30px rgba(31,41,55,0.08);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.media-card img:hover, .hero-image:hover, .card img:hover{
  transform:translateY(-8px) scale(1.01);
  box-shadow:0 28px 60px rgba(30,58,138,0.12);
  filter:brightness(1.02);
}

/* Imagen principal grande y centrada debajo del hero */
.screenshot-section{display:flex;justify-content:center;padding:2rem 1rem}
.screenshot-wrap{max-width:1100px;width:100%;display:flex;justify-content:center}
.screenshot-image{width:80%;max-width:1000px;height:auto;border-radius:14px;box-shadow:0 28px 60px rgba(30,58,138,0.12);transition:transform .22s ease,box-shadow .22s ease}
.screenshot-image:hover{transform:translateY(-10px) scale(1.01)}

/* Sección de video centrado usada en informes */
.video-center-section{display:flex;justify-content:center;padding:2rem 1rem}
.video-wrap{max-width:980px;width:100%;padding:0;border-radius:14px;overflow:hidden}
.video-embed{width:100%;height:560px;border:0;display:block}

@media (max-width:900px){
  .video-embed{height:260px}
}
.card{background:var(--white);border-radius:12px;padding:0.6rem}
.video-card{padding:0}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:2rem 0}
.card.feature{padding:1.25rem;border:1px solid rgba(31,41,55,0.04)}
.card.feature h3{color:var(--blue-paic);margin-top:0}

/* Centro y efecto de tarjeta para la página principal */
.center-cards{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin:2rem auto}
.center-cards .card.feature{flex:0 1 300px;padding:1.25rem;border-radius:12px;background:linear-gradient(180deg,rgba(255,255,255,0.9),#ffffff);border:1px solid rgba(6,182,212,0.08);box-shadow:0 12px 30px rgba(6,182,212,0.06);transition:transform .18s ease,box-shadow .18s ease}
.center-cards .card.feature:hover{transform:translateY(-8px);box-shadow:0 26px 50px rgba(30,58,138,0.12)}


.site-footer{padding:2rem 0;text-align:center;color:rgba(31,41,55,0.7)}

.hero-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;mix-blend-mode:screen;opacity:0.9}

/* Responsive */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .cards{grid-template-columns:1fr}
  .hero-text h1{font-size:1.5rem}
}

/* Accessibility focus */
a:focus{outline:3px solid var(--cyan);outline-offset:2px}