/* ============================================================================
   ESTILOS: PÁGINA DE INICIO (INDEX.PHP) - B&W MINIMALISTA
   ============================================================================ */

/* Hero Principal de Alto Impacto */
.hero-principal {
    background-color: #000000; /* Negro puro */
    color: #ffffff;
    padding: 7rem 1.5rem 8rem;
    text-align: center;
    position: relative;
    border-bottom: 1px solid #333333;
}

.hero-contenido {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    z-index: 2;
}

.hero-titulo {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-subtitulo {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: #a3a3a3;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

.hero-botones {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primario {
    background: #ffffff;
    color: #000000;
    padding: 1.2rem 2.5rem;
    border-radius: 4px;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition:
        background-color 0.2s,
        transform 0.2s;
    border: 2px solid #ffffff;
}

.btn-primario:hover {
    background: #e5e5e5;
    border-color: #e5e5e5;
    transform: translateY(-2px);
}

.btn-secundario {
    background: transparent;
    color: #ffffff;
    padding: 1.2rem 2.5rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition:
        background-color 0.2s,
        border-color 0.2s;
    border: 2px solid #666666;
}

.btn-secundario:hover {
    background: #1a1a1a;
    border-color: #999999;
}

/* Sección: Herramientas Gratuitas (Elevada) */
.caja-herramienta-link {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    padding: 1.8rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    color: #000000;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    min-width: 250px;
}

.caja-herramienta-link:hover {
    border-color: #000000;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    transform: translateY(-3px);
}

/* Sección: El Manifiesto Gestión Cero */
.grid-beneficios {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.tarjeta-beneficio {
    text-align: center;
    padding: 2rem;
}

.icono-beneficio {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: #f5f5f5; /* Gris muy claro */
    color: #000000;
    border-radius: 50%;
    margin-bottom: 1.5rem;
}

.tarjeta-beneficio h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #000000;
}

.tarjeta-beneficio p {
    color: #666666;
    line-height: 1.6;
    font-size: 1rem;
}

/* Sección: Líneas de Negocio */
.grid-servicios {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.tarjeta-servicio {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 3rem;
    transition:
        transform 0.3s ease,
        border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}

.tarjeta-servicio:hover {
    transform: translateY(-5px);
    border-color: #000000;
}

.servicio-etiqueta {
    font-size: 0.8rem;
    font-weight: 700;
    color: #000000;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    display: block;
}

.tarjeta-servicio h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #000000;
}

.tarjeta-servicio p {
    color: #666666;
    line-height: 1.6;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.link-flecha {
    color: #000000;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    transition: opacity 0.2s;
}

.tarjeta-servicio:hover .link-flecha {
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 900px) {
    .grid-beneficios,
    .grid-servicios {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .tarjeta-servicio {
        padding: 2rem;
    }
}