:root {
    --primary-blue: #0b2341;
    --accent-gold: #e5b869;
    --light-bg: #f8fafc;
    --text-dark: #333;
    --text-light: #666;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; scroll-behavior: smooth; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Navegación de Ventas */
.sales-nav { background: #fff; padding: 15px 0; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.sales-nav .nav-container { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.logo-back { color: var(--primary-blue); text-decoration: none; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.btn-primary-small { background: var(--primary-blue); color: #fff; text-decoration: none; padding: 8px 20px; border-radius: 6px; font-weight: 600; font-size: 0.9rem; transition: 0.3s; }

/* Hero Section */
.hero-sales { position: relative; padding: 120px 0 100px 0; background-color: var(--primary-blue); background-size: cover; background-position: center; background-attachment: fixed; color: white; text-align: center; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, rgba(11,35,65,0.85), rgba(11,35,65,0.95)); z-index: 1; }
.hero-content-sales { position: relative; z-index: 2; max-width: 800px; }
.badge-gold { background: var(--accent-gold); color: var(--primary-blue); padding: 5px 15px; border-radius: 20px; font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; display: inline-block; margin-bottom: 20px; }
.hero-sales h1 { font-size: 3.5rem; font-weight: 900; line-height: 1.1; margin-bottom: 20px; text-shadow: 0 2px 4px rgba(0,0,0,0.3); }
.hero-subtitle { font-size: 1.2rem; color: #cbd5e1; margin-bottom: 30px; font-weight: 300; }

.hero-features { display: flex; justify-content: center; gap: 30px; margin-bottom: 40px; flex-wrap: wrap; }
.hero-features span { display: flex; align-items: center; gap: 8px; font-weight: 600; background: rgba(255,255,255,0.1); padding: 10px 20px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.2); }
.hero-features i { color: var(--accent-gold); }

.hero-cta-group { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }
.btn-primary-large { background: var(--accent-gold); color: var(--primary-blue); padding: 15px 35px; border-radius: 8px; text-decoration: none; font-weight: 700; font-size: 1.1rem; display: inline-flex; align-items: center; gap: 10px; transition: transform 0.3s, box-shadow 0.3s; }
.btn-primary-large:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(229,184,105,0.3); }
.btn-secondary-outline { border: 2px solid white; color: white; padding: 15px 35px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 1.1rem; transition: 0.3s; }
.btn-secondary-outline:hover { background: white; color: var(--primary-blue); }

/* Secciones Generales */
.section-title { text-align: center; color: var(--primary-blue); font-size: 2.5rem; margin-bottom: 40px; font-weight: 800; }
.benefits-section, .curriculum-section { padding: 80px 0; background: var(--light-bg); }
.field-section { padding: 80px 0; background: white; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }

/* Tarjetas de Beneficios */
.benefit-card { background: white; padding: 30px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); text-align: center; transition: 0.3s; border-bottom: 4px solid transparent; }
.benefit-card:hover { transform: translateY(-10px); border-bottom-color: var(--accent-gold); }
.benefit-icon { font-size: 3rem; color: var(--primary-blue); margin-bottom: 20px; }
.benefit-card h3 { color: var(--primary-blue); margin-bottom: 15px; }
.benefit-card p { color: var(--text-light); line-height: 1.6; }

/* Acordeón del Curriculum */
.accordion-wrapper { max-width: 800px; margin: 0 auto; }
.semestre-btn { width: 100%; background: white; color: var(--primary-blue); padding: 20px; border: 1px solid #e2e8f0; border-radius: 8px; text-align: left; font-size: 1.2rem; font-weight: 700; cursor: pointer; display: flex; justify-content: space-between; margin-bottom: 10px; transition: 0.3s; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }
.semestre-btn:hover, .semestre-btn.active { border-color: var(--accent-gold); }
.semestre-content { display: none; background: white; padding: 20px; border: 1px solid #e2e8f0; border-top: none; border-radius: 0 0 8px 8px; margin-top: -15px; margin-bottom: 20px; }
.semestre-content.abierto { display: block; }
.semestre-content ul { list-style: none; }
.semestre-content li { padding: 12px 0; border-bottom: 1px solid #eee; color: #555; display: flex; align-items: center; gap: 10px; }
.semestre-content li::before { content: '\f00c'; font-family: 'Font Awesome 5 Free'; font-weight: 900; color: #2e7d32; }

/* CTA Final */
.cta-final-section { background: var(--primary-blue); color: white; padding: 80px 0; }
.cta-final-section h2 { font-size: 2.5rem; margin-bottom: 20px; }
.cta-final-section p { font-size: 1.2rem; margin-bottom: 30px; opacity: 0.9; }
.btn-whatsapp-large { background: #25D366; color: white; padding: 18px 40px; border-radius: 50px; font-size: 1.3rem; font-weight: 700; text-decoration: none; display: inline-flex; align-items: center; gap: 15px; transition: 0.3s; box-shadow: 0 10px 20px rgba(37,211,102,0.3); }
.btn-whatsapp-large:hover { background: #1ebe5d; transform: scale(1.05); }

/* Animaciones */
.pulse-effect { animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(229,184,105,0.7); } 70% { box-shadow: 0 0 0 15px rgba(229,184,105,0); } 100% { box-shadow: 0 0 0 0 rgba(229,184,105,0); } }

/* Responsive */
.mobile-sticky-cta { display: none; }
@media (max-width: 768px) {
    .hero-sales h1 { font-size: 2.2rem; }
    .hero-cta-group { flex-direction: column; }
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .field-image { order: -1; }
    .mobile-sticky-cta { display: block; position: fixed; bottom: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 -5px 15px rgba(0,0,0,0.1); }
    .btn-primary-large { width: 100%; justify-content: center; }
}