:root {
    --primary: #0a192f; /* Azul oscuro elegante */
    --secondary: #172a45;
    --accent: #f97316; /* Naranja logístico */
    --light: #e6f1ff;
    --white: #ffffff;
    --text-gray: #8892b0;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); line-height: 1.6; color: var(--secondary); background-color: var(--white); }

/* Utilities */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.small-container { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.bg-light { background-color: #f4f7fa; }
.bg-dark { background-color: var(--primary); }
.text-white { color: var(--white); }
.hidden { display: none; }

/* Buttons */
.btn { display: inline-block; padding: 12px 30px; border-radius: 5px; text-decoration: none; font-weight: 500; transition: 0.3s; cursor: pointer; border: none; font-size: 1rem; }
.btn-primary { background-color: var(--accent); color: var(--white); }
.btn-primary:hover { background-color: #e66000; transform: translateY(-2px); }
.btn-whatsapp { background-color: #25D366; color: var(--white); margin-left: 10px; }
.btn-accent { background-color: var(--accent); color: var(--white); font-weight: bold; }
.btn-block { display: block; width: 100%; }

/* Navbar */
.navbar { background: rgba(10, 25, 47, 0.95); padding: 15px 0; position: fixed; width: 100%; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: var(--font-heading); font-weight: 700; color: var(--white); font-size: 1.5rem; }
.logo span { color: var(--accent); }
.nav-links { display: flex; list-style: none; align-items: center; }
.nav-links li a { color: var(--light); text-decoration: none; padding: 0 15px; font-size: 0.95rem; transition: color 0.3s; }
.nav-links li a:hover { color: var(--accent); }
.btn-nav { border: 1px solid var(--accent); padding: 8px 20px !important; border-radius: 4px; margin-left: 10px; }

/* Hero */
.hero { height: 100vh; background: url('https://images.unsplash.com/photo-1519389950473-47ba0277781c?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover; position: relative; display: flex; align-items: center; justify-content: center; text-align: center; margin-top: -60px; }
.overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(10, 25, 47, 0.7); }
.hero-content { position: relative; z-index: 2; color: var(--white); max-width: 800px; padding: 20px; }
.hero-content h1 { font-family: var(--font-heading); font-size: 3.5rem; margin-bottom: 20px; font-weight: 700; }
.hero-content p { font-size: 1.2rem; margin-bottom: 30px; color: var(--light); }

/* Grid Layouts */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
.split-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }

/* Cards */
.card { background: var(--white); padding: 30px; border-radius: 8px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); transition: 0.3s; text-align: center; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.card i { font-size: 2.5rem; color: var(--accent); margin-bottom: 20px; }
.section-title { text-align: center; font-family: var(--font-heading); font-size: 2.2rem; color: var(--primary); margin-bottom: 10px; }

/* Cotizador */
.cotizador-form-wrapper, .contact-form-wrapper { background: var(--white); padding: 30px; border-radius: 8px; box-shadow: 0 5px 20px rgba(0,0,0,0.1); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 4px; font-family: var(--font-body); }
.result-box { margin-top: 20px; background: #e3f2fd; padding: 15px; border-radius: 5px; text-align: center; border: 1px solid #bbdefb; }
.rounded { border-radius: 8px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.img-responsive { width: 100%; height: auto; }

/* Testimonials */
.overlay-dark { position: relative; z-index: 1; }
.overlay-dark::before { content: ''; position: absolute; top:0; left:0; width:100%; height:100%; background: rgba(10, 25, 47, 0.85); z-index: -1; }
.testimonial-card { background: rgba(255,255,255,0.05); padding: 30px; border-radius: 8px; color: var(--light); backdrop-filter: blur(5px); border: 1px solid rgba(255,255,255,0.1); }
.stars { color: #ffd700; margin-bottom: 15px; }

/* FAQ Accordion */
.accordion-item { border-bottom: 1px solid #eee; }
.accordion-header { width: 100%; padding: 20px; background: none; border: none; text-align: left; font-size: 1.1rem; font-weight: 500; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--primary); }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; padding: 0 20px; color: #666; }
.accordion-header.active { color: var(--accent); }

/* Contacto */
.contact-list { list-style: none; margin-top: 30px; }
.contact-list li { margin-bottom: 15px; font-size: 1.1rem; display: flex; align-items: center; }
.contact-list li i { margin-right: 15px; color: var(--accent); width: 20px; }

/* Footer */
footer { background: #020c1b; color: #8892b0; text-align: center; padding: 30px 0; font-size: 0.9rem; }

/* Mobile */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Simplified for demo, add JS toggle in production */
    .hero-content h1 { font-size: 2.2rem; }
    .split-layout { grid-template-columns: 1fr; }
    .hero { margin-top: 0; }
}