/* Variables de Color */
:root {
    --primary-color: #004AAD; /* Azul corporativo */
    --secondary-color: #FF6B6B; /* Rojo/Naranja de acento */
    --text-color: #333;
    --light-bg: #f4f7f6;
    --dark-bg: #2c3e50;
    --white: #fff;
}

/* Reset Básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

ul {
    list-style: none;
}

/* --- Cabecera y Navegación --- */
.main-header {
    background: var(--white);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 3px solid var(--primary-color);
    position: sticky; /* Fija la cabecera al hacer scroll */
    top: 0;
    z-index: 1000;
}

/* Estilo del Logo */
.logo a {
    color: var(--primary-color);
}
.logo h1 {
    font-size: 1.8em;
    margin: 0;
}
.logo .tagline {
    display: block;
    font-size: 0.7em;
    color: var(--secondary-color);
    text-transform: uppercase;
}

/* Estilo de la Navegación */
.main-nav ul {
    display: flex;
}
.main-nav li {
    margin-left: 20px;
}
.main-nav a {
    color: var(--dark-bg);
    font-weight: bold;
    padding: 5px 10px;
    transition: color 0.3s, border-bottom 0.3s;
}
.main-nav a:hover {
    color: var(--secondary-color);
    border-bottom: 2px solid var(--secondary-color);
}

/* --- Botón CTA (Call to Action) --- */
.cta-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 10px 25px;
    border-radius: 5px;
    text-transform: uppercase;
    font-weight: bold;
    margin-top: 15px;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}
.cta-button:hover {
    background: #003a85; /* Tono más oscuro al pasar el ratón */
}

/* --- Secciones Generales --- */
section {
    padding: 60px 5%;
    max-width: 1200px;
    margin: 0 auto;
}

h2, h3 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
}

/* --- Sección Hero (Inicio) --- */
.hero {
    background: url('placeholder_background.jpg') no-repeat center center/cover; /* Reemplaza con una imagen real */
    background-color: var(--dark-bg);
    color: var(--white);
    min-height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.hero-content h2 {
    font-size: 2.5em;
    color: var(--white);
}
.hero-content p {
    font-size: 1.2em;
    margin: 20px 0;
}

/* --- Sección de Servicios --- */
.services-section {
    background-color: var(--light-bg);
}
.service-cards {
    display: flex;
    justify-content: space-around;
    gap: 20px;
}
.card {
    background: var(--white);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 30%;
    text-align: center;
    transition: transform 0.3s;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}
.card h4 {
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* --- Sección Sobre Nosotros --- */
.about-section ul {
    list-style-type: disc;
    margin-left: 40px;
    padding-top: 10px;
}

/* --- Sección de Contacto y Formulario --- */
.contact-section {
    background-color: var(--white);
}

#contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
}

.form-group textarea {
    resize: vertical;
}

.contact-section .cta-button {
    width: 100%;
}

#form-message {
    text-align: center;
    padding: 10px;
    margin-top: 20px;
    border-radius: 4px;
}
.hidden {
    display: none;
}

/* --- Pie de Página --- */
.main-footer {
    background: var(--dark-bg);
    color: var(--white);
    text-align: center;
    padding: 20px 0;
    font-size: 0.9em;
}

/* --- Media Queries para Responsive Design --- */
@media (max-width: 768px) {
    .main-header {
        flex-direction: column;
        text-align: center;
    }
    .main-nav ul {
        flex-direction: column;
        padding-top: 10px;
    }
    .main-nav li {
        margin: 5px 0;
    }
    .service-cards {
        flex-direction: column;
    }
    .card {
        width: 100%;
    }
}