/* ============================================================
   ingenieria.css — Bloque 4: Ingeniería, Instalación y Respaldo Técnico
   Grid claro de 3 tarjetas (respaldo operativo de los suministros)
   ============================================================ */

#ingenieria {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.ingenieria__inner {
    max-width: var(--container-max);
    margin: 0 auto;
}

.ingenieria__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.eng-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius-lg);
    padding: 38px 32px 32px;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.eng-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.eng-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.eng-card:hover::before {
    transform: scaleX(1);
}

.eng-card__num {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-gold-text);
}

.eng-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    background: var(--color-navy-bg);
    color: var(--color-navy);
}

.eng-card__icon svg {
    width: 30px;
    height: 30px;
}

.eng-card__title {
    font-family: var(--font-heading);
    font-size: 1.12rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
}

.eng-card__desc {
    font-size: 0.9rem;
    line-height: 1.62;
    color: var(--text-secondary);
    flex: 1;
}

.eng-card .ficha-btn {
    margin-top: 6px;
    border-top: 1px solid var(--border-light);
    width: 100%;
    padding-top: 14px;
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 900px) {
    .ingenieria__grid {
        grid-template-columns: 1fr;
        max-width: 520px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    #ingenieria {
        padding: var(--section-padding-sm);
    }
}