/* === Value Proposition Section - The Bridge === */

#value-proposition {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--color-primary-navy) 0%, var(--color-primary-deep) 100%);
}

#value-proposition h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

/* Grid de 4 Pilares */
.grid-4-pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.pillar-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-moderate);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

.pillar-card:hover {
    border-color: var(--color-accent-green);
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(187, 255, 0, 0.15);
    background: rgba(187, 255, 0, 0.02);
}

.pillar-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    filter: grayscale(100%);
    transition: filter var(--transition-normal);
}

.pillar-card:hover .pillar-icon {
    filter: grayscale(0%);
}

.pillar-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.pillar-card p {
    font-size: 1rem;
    color: var(--color-gray-light);
    line-height: 1.6;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .grid-4-pillars {
        grid-template-columns: 1fr;
        /* Force single column for better readability */
        gap: 1.5rem;
    }

    #value-proposition h2 {
        font-size: var(--font-size-h2);
    }

    .pillar-card {
        padding: 1.5rem;
    }

    .pillar-icon {
        font-size: 2rem;
    }

    .pillar-card h3 {
        font-size: 1.2rem;
    }

    .pillar-card p {
        font-size: 0.9rem;
    }
}