/* Variables de Diseño Institucional BVH - Manual v1.2 */
:root {
    --bvh-prado: #1F2223;       /* Gris Bronce del León del Prado */
    --bvh-caoba: #5E191B;       /* Rojo Caoba de la Puerta Histórica */
    --bvh-oro: #C5A059;         /* Oro Antiguo del Monograma del Piso */
    --bvh-piedra: #FAF9F6;      /* Blanco Mármol de la Fachada Original */
    --bvh-piedra-dark: #E6E1D5; /* Bordes, separadores y sombras suaves */
    --text-muted: #555555;
}

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

body {
    background-color: var(--bvh-piedra);
    color: var(--bvh-prado);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Encabezado / Navbar */
header {
    background-color: var(--bvh-prado);
    border-bottom: 3px solid var(--bvh-oro);
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: 'Cinzel', serif;
    color: var(--bvh-piedra);
    font-size: 1.2rem;
    letter-spacing: 1px;
    text-decoration: none;
    font-weight: 700;
}

.logo-text span {
    color: var(--bvh-oro);
}

.nav-links a {
    color: var(--bvh-piedra-dark);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--bvh-oro);
}

/* Sección Héroe Principal */
.hero {
    max-width: 1200px;
    margin: 5rem auto 3rem auto;
    padding: 0 2rem;
    text-align: center;
}

.hero .tagline {
    display: inline-block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--bvh-caoba);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-family: 'Cinzel', serif;
    font-size: 3rem;
    color: var(--bvh-prado);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto 2.5rem auto;
}

/* Botones de Acción */
.cta-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.btn-primary {
    display: inline-block;
    background-color: var(--bvh-caoba);
    color: var(--bvh-piedra);
    padding: 0.8rem 2rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: background-color 0.3s, transform 0.2s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.btn-primary:hover {
    background-color: #7A2224;
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--bvh-prado);
    padding: 0.8rem 2rem;
    text-decoration: none;
    font-weight: 600;
    border: 2px solid var(--bvh-oro);
    border-radius: 4px;
    transition: background-color 0.3s, color 0.3s, transform 0.2s;
}

.btn-secondary:hover {
    background-color: var(--bvh-oro);
    color: var(--bvh-prado);
    transform: translateY(-2px);
}

/* Sección de Pilares del Holding (Grid) */
.features {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.card {
    background: #ffffff;
    border: 1px solid var(--bvh-piedra-dark);
    border-radius: 6px;
    padding: 2.5rem 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.01);
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(31,34,35,0.05);
    border-color: var(--bvh-oro);
}

.card h3 {
    font-family: 'Cinzel', serif;
    color: var(--bvh-prado);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Pie de Página */
footer {
    background-color: var(--bvh-prado);
    color: var(--bvh-piedra-dark);
    padding: 3rem 2rem;
    margin-top: 6rem;
    border-top: 1px solid var(--bvh-oro);
    text-align: center;
    font-size: 0.85rem;
}

.firewall {
    font-size: 0.75rem;
    color: #888888;
    max-width: 700px;
    margin: 1.5rem auto 0 auto;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2.2rem; }
    .cta-container { flex-direction: column; gap: 1rem; }
}