:root {
    --primary: #0d6efd;
    --secondary: #0f172a;
    --gradient: linear-gradient(135deg, #0d6efd 0%, #0dcaf0 100%);
}
body {
    font-family: 'Inter', sans-serif;
    color: #334155;
    scroll-behavior: smooth;
}

/* Animaciones */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Navbar */
.navbar { backdrop-filter: blur(10px); background: rgba(255,255,255,0.95); box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.navbar-brand { font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }

/* Botones global */
.btn-gradient { background: var(--gradient); color: white; border: none; font-weight: 600; transition: transform 0.3s; }
.btn-gradient:hover { color: white; transform: translateY(-3px); box-shadow: 0 10px 20px rgba(13,110,253,0.3); }

/* Inicio (Hero) */
.hero-section { padding: 160px 0 100px; background: radial-gradient(circle at top right, #e0f2fe 0%, #ffffff 100%); }
.hero-title { font-size: 3.5rem; font-weight: 800; color: var(--secondary); line-height: 1.2; }

/* Demos */
.demo-card { border-radius: 15px; border: none; box-shadow: 0 5px 15px rgba(0,0,0,0.08); transition: transform 0.3s; overflow: hidden; }
.demo-card:hover { transform: translateY(-10px); }
.demo-img { height: 220px; overflow: hidden; position: relative; }
.demo-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.demo-card:hover .demo-img img { transform: scale(1.05); }
.demo-badge { position: absolute; top: 15px; right: 15px; background: rgba(0,0,0,0.8); color: white; padding: 5px 15px; border-radius: 20px; font-size: 0.8rem; z-index: 2;}

/* Precios */
.pricing-section { background: var(--secondary); color: white; padding: 100px 0; }
.pricing-card { background: rgba(255,255,255,0.05); border-radius: 20px; padding: 40px; border: 1px solid rgba(255,255,255,0.1); transition: transform 0.3s; }
.pricing-card:hover { transform: translateY(-10px); }
.pricing-card.popular { background: var(--gradient); border: none; transform: scale(1.05); }
.pricing-card.popular:hover { transform: scale(1.05) translateY(-10px); }
.price { font-size: 3rem; font-weight: 800; margin: 20px 0; }
.pricing-features { list-style: none; padding: 0; text-align: left; }
.pricing-features li { margin-bottom: 15px; }
.pricing-features i { color: #0dcaf0; margin-right: 10px; }
.popular .pricing-features i { color: white; }

/* Portafolio */
.portfolio-item { border-radius: 15px; overflow: hidden; position: relative; margin-bottom: 25px; cursor: pointer; }
.portfolio-item img { width: 100%; height: 250px; object-fit: cover; transition: transform 0.4s; }
.portfolio-overlay { position: absolute; inset: 0; background: rgba(13,110,253,0.9); color: white; display: flex; flex-direction: column; justify-content: center; align-items: center; opacity: 0; transition: opacity 0.3s; }
.portfolio-item:hover img { transform: scale(1.1); }
.portfolio-item:hover .portfolio-overlay { opacity: 1; }

/* Contacto */
.contact-form { background: white; padding: 40px; border-radius: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
.whatsapp-btn { background: #25D366; color: white; border: none; font-weight: bold; }
.whatsapp-btn:hover { background: #128C7E; color: white; }