/* --- Variables CSS (Paleta de Colores y Fuentes) --- */
:root {
    --color-primary: #182260; /* Azul oscuro profundo */
    --color-secondary: #4A5FA5; /* Azul claro suave */
    --color-light-gray: #E0E4F1; /* Gris claro */
    --color-white: #FFFFFF; /* Blanco puro */
    --color-accent: #A3B8FF; /* Azul pastel */
    --color-whatsapp-green: #25D366; /* Verde WhatsApp */
    --color-text-on-dark: #FFFFFF;
    --color-text-on-light: #333333;

    --font-primary: 'Inter', sans-serif;
    --base-font-size: 16px;
    --line-height-base: 1.6;

    --container-max-width: 1140px;
    --container-padding: 0 20px;
    --section-padding: 60px 0;
    --header-height: 60px;
}

/* --- Reset Básico y Estilos Globales --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: var(--base-font-size); }

/* --- Fondo Degradado y Texto Base --- */
body {
    font-family: var(--font-primary);
    line-height: var(--line-height-base);
    color: var(--color-text-on-dark);
    min-height: 100vh;
    background: linear-gradient( 135deg, #1e3a8a, #182260, #4A5FA5 );
    background-size: 400% 400%;
    animation: gradientMove 15s ease infinite;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Texto Oscuro y Fondos Sólidos para Secciones --- */
section {
    color: var(--color-text-on-light);
    padding: var(--section-padding);
    position: relative;
    overflow: hidden;
}
#services, #products, #faq { background-color: var(--color-white); }
#approach, #testimonials, #contact { background-color: var(--color-light-gray); }

/* --- Contenedor Principal --- */
.container { max-width: var(--container-max-width); margin-left: auto; margin-right: auto; padding: var(--container-padding); }

/* --- Tipografía --- */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; margin-bottom: 1em; color: var(--color-primary); }
h1 { font-size: 2.5rem; text-shadow: 1px 1px 3px var(--color-primary); }
h2 { font-size: 2rem; text-align: center; margin-bottom: 40px; }
h3 { font-size: 1.5rem; }
p { margin-bottom: 1em; line-height: var(--line-height-base); }
a { color: var(--color-secondary); text-decoration: none; transition: color 0.3s ease; }
a:hover, a:focus { color: var(--color-primary); text-decoration: underline; }
ul, ol { margin-bottom: 1em; padding-left: 1.2em; list-style-position: inside; }
li { margin-bottom: 0.4em; }
strong, b { font-weight: 700; }
img { max-width: 100%; height: auto; display: block; }
.section-description { text-align: center; max-width: 700px; margin: -20px auto 40px auto; color: #555; font-size: 1.05rem; }


/* --- Encabezado (Header) --- */
.site-header { background-color: var(--color-primary); color: var(--color-text-on-dark); padding: 0; height: var(--header-height); position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1); display: flex; align-items: center; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.site-header .logo a { display: inline-block; text-decoration: none; }
.site-header .logo img { height: 40px; width: auto; max-height: calc(var(--header-height) - 20px); display: block; }
.main-nav { display: block; }
.main-nav ul { list-style: none; padding: 0; margin: 0; display: flex; align-items: center; }
.main-nav li { margin-left: 25px; }
.main-nav a { color: var(--color-text-on-dark); text-decoration: none; font-weight: 400; padding: 5px 0; position: relative; }
.main-nav a:hover, .main-nav a:focus { color: var(--color-accent); text-decoration: none; }
.main-nav a::after { content: ''; position: absolute; width: 100%; transform: scaleX(0); height: 2px; bottom: -2px; left: 0; background-color: var(--color-accent); transform-origin: bottom right; transition: transform 0.25s ease-out; }
.main-nav a:hover::after { transform: scaleX(1); transform-origin: bottom left; }
.mobile-nav-toggle { display: none; background: none; border: none; padding: 10px; cursor: pointer; z-index: 1001; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0; }
.hamburger-box { display: inline-block; position: relative; width: 30px; height: 24px; }
.hamburger-inner, .hamburger-inner::before, .hamburger-inner::after { content: ''; position: absolute; width: 30px; height: 3px; background-color: var(--color-white); border-radius: 3px; transition: transform 0.3s ease, background-color 0.3s ease; }
.hamburger-inner { top: 50%; transform: translateY(-50%); }
.hamburger-inner::before { top: -10px; }
.hamburger-inner::after { bottom: -10px; }
.mobile-nav-toggle[aria-expanded="true"] .hamburger-inner { background-color: transparent; }
.mobile-nav-toggle[aria-expanded="true"] .hamburger-inner::before { transform: translateY(10px) rotate(45deg); }
.mobile-nav-toggle[aria-expanded="true"] .hamburger-inner::after { transform: translateY(-10px) rotate(-45deg); }


/* --- Botones (CTA) --- */
.cta-button, .cta-button-nav, .cta-button-secondary { display: inline-block; padding: 12px 25px; border-radius: 5px; text-decoration: none; font-weight: 700; transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease, border-color 0.3s ease; cursor: pointer; border: 1px solid transparent; font-size: 1rem; text-align: center; }
.cta-button { background-color: var(--color-secondary); color: var(--color-text-on-dark); }
.cta-button:hover, .cta-button:focus { background-color: #3a4f8a; color: var(--color-text-on-dark); transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); }
.cta-button-nav { background-color: transparent; border: 1px solid var(--color-accent); color: var(--color-accent); padding: 8px 18px; }
.cta-button-nav:hover, .cta-button-nav:focus { background-color: var(--color-accent); color: var(--color-primary); border-color: var(--color-accent); transform: none; box-shadow: none; }
.cta-button-secondary { background-color: transparent; border: 1px solid var(--color-secondary); color: var(--color-secondary); padding: 10px 20px; font-weight: 600; }
.cta-button-secondary:hover, .cta-button-secondary:focus { background-color: var(--color-secondary); color: var(--color-white); border-color: var(--color-secondary); transform: translateY(-1px); box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08); }


/* --- Estilos de Secciones Generales --- */
main { padding-top: var(--header-height); }
.section-content { display: flex; gap: 40px; align-items: center; }
.section-image img { border-radius: 8px; }


/* --- Sección Hero --- */
.hero-section { background: linear-gradient(to bottom, #182260, #E0E4F1); padding-top: 40px; padding-bottom: 40px; }
.hero-content { display: flex; align-items: center; gap: 50px; }
.hero-text { flex: 2; order: 1; padding-right: 25px; color: var(--color-text-on-dark); }
.hero-image { flex: 1; order: 2; text-align: center; }
.hero-image img { max-width: 100%; margin: 0 auto; }
.hero-text h1 { color: var(--color-white); margin-bottom: 0.5em; }
.hero-text p { font-size: 1.1rem; color: var(--color-light-gray); margin-bottom: 1.5em; }


/* --- Sección Servicios/Beneficios --- */
.benefits-section { background-color: var(--color-white); }
.benefits-section .section-content { flex-direction: row-reverse; align-items: center; gap: 40px; }
.benefits-section .section-image { flex: 1; order: 2; text-align: center; }
.benefits-section .section-image img { max-height: 350px; margin: 0 auto; border-radius: 8px; }
.benefits-list { flex: 2; order: 1; list-style: none; padding-left: 0; padding-right: 25px; }
.benefits-list li { margin-bottom: 15px; padding-left: 35px; position: relative; font-size: 1.05rem; color: var(--color-text-on-light); }
.benefits-list li strong { color: var(--color-primary); }
.benefits-list li::before { content: '✓'; position: absolute; left: 0; top: 0px; color: var(--color-secondary); font-weight: bold; font-size: 1.4rem; line-height: 1.4; }


/* --- Sección Cómo Ayudamos --- */
.process-section { background-color: var(--color-light-gray); }
.process-steps { display: flex; justify-content: space-around; text-align: center; gap: 30px; flex-wrap: wrap; align-items: flex-start; }
.step { flex: 1; padding: 20px; min-width: 250px; color: var(--color-text-on-light); }
.step img { max-height: 300px; max-width: 100%; width: auto; margin: 0 auto 20px auto; }
.step h3 { margin-bottom: 10px; font-size: 1.2rem; color: var(--color-primary); }


/* --- Sección Productos --- */
.products-section { background-color: var(--color-white); }
.product-showcase { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.product-item { flex: 0 1 calc(33.333% - 20px); min-width: 280px; background-color: var(--color-white); border: 1px solid var(--color-light-gray); border-radius: 8px; padding: 25px; text-align: center; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05); transition: transform 0.3s ease, box-shadow 0.3s ease; display: flex; flex-direction: column; }
.product-item:hover { transform: translateY(-5px); box-shadow: 0 8px 15px rgba(0, 0, 0, 0.08); }
.product-item img { max-height: 250px; width: auto; margin: 0 auto 20px auto; }
.product-item h3 { font-size: 1.3rem; margin-bottom: 10px; color: var(--color-primary); }
.product-item p { font-size: 0.95rem; color: #555; margin-bottom: 15px; flex-grow: 1; }
.learn-more-btn { display: inline-block; padding: 8px 15px; margin-top: 10px; font-size: 0.9rem; font-weight: 600; color: var(--color-secondary); background-color: transparent; border: 1px solid var(--color-secondary); border-radius: 5px; cursor: pointer; transition: background-color 0.3s ease, color 0.3s ease; }
.learn-more-btn:hover, .learn-more-btn:focus { background-color: var(--color-secondary); color: var(--color-white); text-decoration: none; }
.whatsapp-link { display: inline-flex; align-items: center; gap: 8px; padding: 8px 15px; border: 1px solid var(--color-whatsapp-green); color: var(--color-whatsapp-green); background-color: transparent; border-radius: 5px; font-size: 0.9rem; font-weight: 600; text-decoration: none; margin-top: 10px; transition: background-color 0.3s ease, color 0.3s ease; }
.whatsapp-link i { font-size: 1.1em; }
.whatsapp-link:hover, .whatsapp-link:focus { background-color: var(--color-whatsapp-green); color: var(--color-white); text-decoration: none; }


/* --- Sección Testimonios --- */
.testimonials-section { background-color: var(--color-light-gray); text-align: center; }
.testimonial-item { max-width: 700px; margin: 0 auto; padding: 30px; border-radius: 8px; position: relative; color: var(--color-text-on-light); }
.testimonial-image { width: 350px; height: 350px; border-radius: 50%; margin: 0 auto 20px auto; border: 3px solid var(--color-accent); }
.testimonial-item blockquote { font-size: 1.15rem; font-style: italic; color: #555; margin-bottom: 15px; border: none; padding: 0; }
.testimonial-item blockquote::before, .testimonial-item blockquote::after { content: '"'; font-size: 2rem; color: var(--color-accent); opacity: 0.8; }
.testimonial-item cite { font-weight: 700; color: var(--color-primary); display: block; font-style: normal; }


/* --- Sección FAQ --- */
.faq-section { background-color: var(--color-white); }
.faq-section .section-content { align-items: flex-start; gap: 40px; }
.faq-list { flex: 2; order: 1; padding-right: 20px; color: var(--color-text-on-light); }
.faq-image { flex: 1; order: 2; text-align: center; padding-left: 20px; }
.faq-image img { max-height: 350px; margin: 0 auto; border-radius: 8px; }
details { border-bottom: 1px solid var(--color-light-gray); margin-bottom: 15px; padding-bottom: 15px; }
summary { font-weight: 700; color: var(--color-primary); cursor: pointer; list-style: none; position: relative; padding-right: 25px; font-size: 1.1rem; }
summary::-webkit-details-marker, summary::marker { display: none; }
summary::after { content: '+'; position: absolute; right: 0; top: 0; font-size: 1.4rem; color: var(--color-secondary); transition: transform 0.2s ease-out; }
details[open] summary::after { content: '−'; }
details p { padding-top: 10px; color: #555; }


/* --- Sección Contacto --- */
.contact-section { background-color: var(--color-light-gray); text-align: center; }
.contact-section h2 { margin-bottom: 20px; }
.contact-info { max-width: 500px; margin: 0 auto; text-align: left; line-height: 1.8; color: var(--color-text-on-light); }
.contact-info p { margin-bottom: 15px; font-size: 1.05rem; }
.contact-info strong { color: var(--color-primary); margin-right: 8px; }
.contact-info a { text-decoration: underline; }
.contact-info a:hover { color: var(--color-primary); }


/* --- Pie de Página (Footer) --- */
.site-footer { background-color: var(--color-primary); color: var(--color-light-gray); padding: 40px 0 20px 0; font-size: 0.9rem; }
.footer-content { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 20px; margin-bottom: 30px; }
.footer-info p { margin-bottom: 0.5em; }
.footer-info strong { color: var(--color-white); }
.footer-info a, .footer-links a { color: var(--color-light-gray); }
.footer-info a:hover, .footer-links a:hover { color: var(--color-white); text-decoration: underline; }
.footer-links a { display: block; margin-bottom: 5px; }
.footer-copy { text-align: center; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; font-size: 0.85rem; color: #aab3e0; }


/* --- Estilos para el Modal ("Tarjeta Electrónica") --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex; /* Gestionado por JS y style="display: none;" inicial en HTML */
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.is-active {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background-color: var(--color-white);
    color: var(--color-text-on-light);
    padding: 30px 40px;
    border-radius: 8px;
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
.modal-overlay.is-active .modal-content {
    transform: scale(1);
}
.modal-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    color: #aaa;
    cursor: pointer;
    padding: 5px;
    transition: color 0.2s ease;
}
.modal-close-btn:hover, .modal-close-btn:focus {
    color: #333;
}

/* Estilos para el contenido del modal de detalles de producto */
#modal-product-details { font-size: 1rem; }
#modal-product-details h3, 
#modal-product-details h4 {
    color: var(--color-primary);
    margin-top: 1.5em;
    margin-bottom: 0.8em;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
}
#modal-product-details h3:first-child,
#modal-product-details h4:first-child {
    margin-top: 0; /* Evitar margen superior excesivo si es el primer elemento */
}
#modal-product-details h4 { font-size: 1.3rem; }
#modal-product-details p {
    color: var(--color-text-on-light);
    margin-bottom: 1em;
    line-height: 1.7;
}
#modal-product-details ul, 
#modal-product-details ol {
    color: var(--color-text-on-light);
    margin-bottom: 1em;
    padding-left: 30px;
    list-style-position: outside;
}
#modal-product-details ul { list-style-type: disc; }
#modal-product-details ol { list-style-type: decimal; }
#modal-product-details li {
    margin-bottom: 0.5em;
    line-height: 1.6;
    color: var(--color-text-on-light);
}
#modal-product-details strong, 
#modal-product-details b {
    font-weight: 700;
    color: inherit;
}
#modal-product-details a {
    color: var(--color-secondary);
    text-decoration: underline;
}
#modal-product-details a:hover, 
#modal-product-details a:focus {
    color: var(--color-primary);
}

/* Estilos para el contenido del modal de política de privacidad */
#modal-privacy-policy-details { font-size: 1rem; }
#modal-privacy-policy-details h3 { /* Estilo para un posible título */
    color: var(--color-primary);
    margin-top: 0; /* Asumiendo que el título será el primer elemento */
    margin-bottom: 1em;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
}
#modal-privacy-policy-details p {
    color: var(--color-text-on-light);
    margin-bottom: 1em;
    line-height: var(--line-height-base); /* Usar line-height base para texto general */
}
#modal-privacy-policy-details strong,
#modal-privacy-policy-details b {
    font-weight: 700;
    color: inherit;
}
#modal-privacy-policy-details a {
    color: var(--color-secondary);
    text-decoration: underline;
}
#modal-privacy-policy-details a:hover,
#modal-privacy-policy-details a:focus {
    color: var(--color-primary);
}


/* --- Responsividad --- */
@media (max-width: 1200px) { /* Sin cambios */ }
@media (max-width: 992px) {
    .product-item { flex-basis: calc(50% - 15px); }
    .step { min-width: calc(50% - 20px); }
}
@media (max-width: 768px) {
    html { font-size: 15px; }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.4rem; }
    .container { padding: 0 15px; }

    /* Header Móvil */
    .main-nav { display: none; position: absolute; top: var(--header-height); left: 0; width: 100%; background-color: var(--color-primary); padding: 20px 0; box-shadow: 0 5px 10px rgba(0,0,0,0.1); max-height: calc(100vh - var(--header-height)); overflow-y: auto; }
    .main-nav.is-active { display: block; }
    .main-nav ul { flex-direction: column; align-items: center; }
    .main-nav li { margin-left: 0; margin-bottom: 15px; width: 100%; text-align: center; }
    .main-nav a { display: block; padding: 10px 0; width: 100%; }
    .main-nav a::after { display: none; }
    .cta-button-nav { display: block; margin: 10px auto 0 auto; max-width: 200px; }
    .mobile-nav-toggle { display: block; }
    body.nav-open { overflow: hidden; }

    /* Layouts Móvil */
    main { padding-top: var(--header-height); }
    .hero-section { padding-top: 40px; padding-bottom: 40px; }
    .hero-content { flex-direction: column; gap: 30px; }
    .hero-text, .hero-image { flex: auto; order: initial; padding-right: 0; padding-left: 0; max-width: 100%; text-align: center; }
    .hero-image img { max-width: 80%; }

    .section-content, .process-steps, .faq-section .section-content { flex-direction: column; gap: 30px; }
    .benefits-section .section-image, .benefits-list, .faq-list, .faq-image { flex: auto; order: initial; padding-right: 0; padding-left: 0; max-width: 100%; }
    .benefits-section .section-content { flex-direction: column; }
    .faq-section .section-content { flex-direction: column-reverse; }

    /* Alturas Imágenes Móvil */
     .benefits-section .section-image img,
     .faq-image img { max-height: 250px; }
     .step img,
     .product-item img { max-height: 200px; }

    .faq-image { max-width: 300px; margin: 0 auto; }
    .product-item { flex-basis: 100%; min-width: unset; }
    .step { min-width: 100%; }
    .contact-info { padding: 0 10px; }
    .footer-content { flex-direction: column; text-align: center; }
    .footer-info, .footer-links { width: 100%; margin-bottom: 20px; }

    /* Modal ("Tarjeta Electrónica") en móvil */
    .modal-content {
        padding: 20px 25px;
        max-width: 95%;
        width: 90%;
    }
    #modal-product-details h3,
    #modal-privacy-policy-details h3 { /* Aplicar a ambos modales */
        font-size: 1.5rem;
    }
    #modal-product-details h4 {
        font-size: 1.2rem;
    }
    #modal-product-details,
    #modal-privacy-policy-details { /* Aplicar a ambos modales */
        font-size: 0.95rem;
    }
}

/* --- Animación del Gradiente --- */
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}