/* Seção de Comparação */
.comparison-section {
    padding: 5rem 0;
    background: var(--gradient-light);
    position: relative;
}

.comparison-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--overlay-light), var(--bg-light));
    z-index: 0;
}

.section-header {
    position: relative;
    z-index: 1;
    margin-bottom: 4rem;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
}

.comparison-grid {
    display: grid;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.comparison-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
}

.platform-card {
    background: var(--overlay-light);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    outline: none;
}

.platform-card:focus-visible {
    outline: 3px solid var(--primary-color-light);
    outline-offset: 2px;
}

/* Adiciona suporte a redução de movimento */
@media (prefers-reduced-motion: reduce) {
    .platform-card {
        transition: none;
    }
    
    .platform-card:hover {
        transform: none;
    }
}

.platform-card.centralized {
    border: 2px solid var(--border-light);
}

.platform-card.decentralized {
    border: 2px solid var(--primary-color-light);
}

.platform-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.platform-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--gradient-light);
    border: 1px solid var(--border-light);
}

.platform-icon img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.platform-info h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
}

.platform-type {
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-top: 0.375rem;
}

.centralized .platform-type {
    color: var(--text-secondary);
}

.decentralized .platform-type {
    color: var(--primary-color-light);
}

.platform-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-top: 0.5rem;
}

.comparison-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-muted);
    font-size: 1.5rem;
}

.comparison-title {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Classes de utilidade para acessibilidade */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0,0,0,0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Responsividade */
@media (max-width: 768px) {
    .comparison-item {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
    
    .platform-card {
        padding: 1.25rem;
    }
    
    .platform-icon {
        width: 48px;
        height: 48px;
    }
    
    .platform-icon img {
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 480px) {
    .comparison-section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-description {
        font-size: 1rem;
    }
    
    .platform-info h3 {
        font-size: 1.1rem;
    }
}