/* --- VARIABLES DE DISEÑO --- */
        :root {
            --primary: #0f172a;      /* Azul Oscuro Institucional */
            --secondary: #0ea5e9;    /* Azul Cielo Moderno */
            --accent: #f59e0b;       /* Dorado Discreto */
            --light: #f8fafc;
            --text: #334155;
            --white: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* --- RESET --- */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', sans-serif;
            color: var(--text);
            background: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            padding-top: 80px; /* Espacio para navbar fija */
        }

        h1, h2, h3 { font-family: 'Playfair Display', serif; color: var(--primary); }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }

        /* --- NAVBAR --- */
        .navbar {
            position: fixed;
            top: 0; left: 0; width: 100%;
            height: 80px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 5%;
            z-index: 1000;
            box-shadow: 0 1px 10px rgba(0,0,0,0.05);
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-menu {
            display: flex;
            gap: 30px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            position: relative;
        }

        .nav-link:hover { color: var(--secondary); }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
            padding: 10px 25px;
            border-radius: 50px;
            font-weight: 600;
        }
        
        .btn-primary:hover { background: var(--secondary); }

        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--primary);
        }

        /* --- HERO --- */
        .hero {
            position: relative;
            height: 90vh;
            display: flex;
            align-items: center;
            background: linear-gradient(to right, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.7)), 
                        url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: var(--white);
            padding: 0 5%;
        }

        .hero-content {
            max-width: 700px;
            animation: fadeIn Up 1s ease-out;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.1;
            margin-bottom: 20px;
            color: var(--white);
        }

        .hero p {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 30px;
            font-weight: 300;
        }

        /* --- SECCIONES --- */
        .section { padding: 80px 5%; }
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }

        .section-header p {
            max-width: 600px;
            margin: 0 auto;
            color: #64748b;
        }

        /* --- SERVICIOS (Grid Moderno) --- */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            padding: 40px 30px;
            border-radius: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid #f1f5f9;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            border-color: var(--secondary);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background: #e0f2fe;
            color: var(--secondary);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        /* --- ABOUT SECTION --- */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-img {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .check-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .check-list i { color: var(--secondary); }

        /* --- CONTACTO --- */
        .contact-container {
            background: var(--light);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .contact-info {
            padding: 50px;
            background: var(--primary);
            color: var(--white);
        }

        .contact-form {
            padding: 50px;
            background: var(--white);
        }

        .input-group { margin-bottom: 20px; }
        .input-group input, .input-group select, .input-group textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid #e2e8f0;
            border-radius: 10px;
            font-family: inherit;
            outline: none;
            transition: 0.3s;
        }

        .input-group input:focus, .input-group textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
        }

        /* --- FOOTER --- */
        footer {
            background: var(--primary);
            color: #94a3b8;
            padding: 60px 5% 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 { color: var(--white); margin-bottom: 20px; }
        .footer-col a { display: block; margin-bottom: 10px; }
        .footer-col a:hover { color: var(--secondary); }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
        }

        /* --- MOBILE NAV (FULLSCREEN OVERLAY) --- */
        .mobile-nav {
            position: fixed;
            top: 0; right: -100%;
            width: 100%;
            height: 100vh;
            background: var(--white);
            z-index: 999;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            transition: 0.4s ease-in-out;
        }

        .mobile-nav.active { right: 0; }

        .mobile-nav a {
            font-size: 1.5rem;
            font-family: 'Playfair Display', serif;
            margin: 15px 0;
            color: var(--primary);
        }

        .close-btn {
            position: absolute;
            top: 30px;
            right: 30px;
            font-size: 2rem;
            cursor: pointer;
            color: var(--primary);
        }

        /* --- FLOATING WHATSAPP --- */
        .whatsapp-float {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #25D366;
            color: white;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.3);
            z-index: 100;
            transition: transform 0.3s;
        }
        .whatsapp-float:hover { transform: scale(1.1); }

        /* --- RESPONSIVE --- */
        @media (max-width: 900px) {
            .nav-menu { display: none; }
            .hamburger { display: block; }
            .about-grid, .contact-container { grid-template-columns: 1fr; }
            .hero { text-align: center; justify-content: center; }
            .section { padding: 60px 5%; }
        }