/* --- Variables y Estilos Globales --- */
:root {
    --color-primario: #0D2C54; /* Azul Corporativo */
    --color-acento: #3A7CA5;   /* Azul Brillante */
    --color-fondo: #F4F7F9;    /* Gris Claro */
    --color-blanco: #FFFFFF;
    --color-texto-oscuro: #333333;
    --fuente-titulos: 'Poppins', sans-serif;
    --fuente-cuerpo: 'Roboto', sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--fuente-cuerpo);
    line-height: 1.7;
    background-color: var(--color-blanco);
    color: var(--color-texto-oscuro);
    margin: 0;
    padding-top: 70px; /* Espacio para el header fijo */
}

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

a {
    color: var(--color-acento);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-primario);
}

.section-title {
    font-family: var(--fuente-titulos);
    font-size: 2.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--color-primario);
}

.section-intro {
    max-width: 700px;
    margin: 0 auto 40px auto;
    text-align: center;
    font-size: 1.1rem;
}

.btn-cta {
    display: inline-block;
    background-color: var(--color-acento);
    color: var(--color-blanco);
    padding: 15px 30px;
    font-family: var(--fuente-titulos);
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-cta:hover {
    background-color: #2e6a91;
    transform: translateY(-3px);
}

.grid-layout {
    display: grid;
    gap: 30px;
}
.cols-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.cols-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.cols-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* --- Header y Navegación --- */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(5px);
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    font-family: var(--fuente-titulos);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primario);
}
.nav-links {
    list-style: none;
    display: flex;
    gap: 35px;
    margin: 0;
}
.nav-links a {
    font-family: var(--fuente-titulos);
    font-weight: 600;
    color: var(--color-primario);
}

/* --- Secciones --- */
section {
    padding: 80px 0;
}

/* Hero */
.hero {
    background-color: var(--color-primario);
    color: var(--color-blanco);
    text-align: center;
    padding: 120px 0;
}
.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}
.hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 30px auto;
    opacity: 0.9;
}

/* Servicios y Cards */
.card {
    background-color: var(--color-blanco);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border-top: 4px solid var(--color-acento);
}
.card h3 {
    font-family: var(--fuente-titulos);
    color: var(--color-primario);
    margin-top: 0;
}

/* Quienes Somos */
.about {
    background-color: var(--color-fondo);
}
.card-vision {
    text-align: center;
    padding: 20px;
}
.card-vision h4 {
    font-size: 1.5rem;
    color: var(--color-acento);
}

/* Why Choose Us */
.feature-item {
    text-align: center;
}
.feature-icon {
    font-size: 2.5rem;
    color: var(--color-acento);
    margin-bottom: 15px;
}
.feature-item h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

/* Testimonios */
.testimonials {
    background-color: var(--color-primario);
    color: var(--color-blanco);
}
.testimonials .section-title {
    color: var(--color-blanco);
}
.testimonial-card {
    background-color: rgba(255,255,255, 0.1);
    padding: 30px;
    border-radius: 8px;
    border-left: 5px solid var(--color-acento);
}
.testimonial-card p {
    font-style: italic;
    margin-bottom: 20px;
}
.testimonial-card cite {
    font-weight: 600;
    font-style: normal;
}

/* Contacto */
.contact {
    background-color: var(--color-fondo);
}
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: var(--fuente-cuerpo);
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: 2px solid var(--color-acento);
}

/* Footer */
.footer {
    background-color: var(--color-texto-oscuro);
    color: #ccc;
    text-align: center;
    padding: 30px 0;
}
.footer a {
    color: var(--color-blanco);
}
.footer .credits {
    font-size: 0.9rem;
}

/* --- Botón de WhatsApp --- */
.whatsapp-flotante {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
}
.whatsapp-icon {
    width: 32px;
    height: 32px;
    fill: #fff;
}

/* --- Responsividad --- */
@media (max-width: 768px) {
    .section-title { font-size: 2.2rem; }
    .hero h1 { font-size: 2.5rem; }
    .nav-links { display: none; } /* Opcional: Implementar menú hamburguesa */
    .contact-wrapper { grid-template-columns: 1fr; }
}