/* Estilos adicionais para melhorar a responsividade */
@media (max-width: 992px) {
    .container {
        width: 95%;
    }
    
    .profiles-grid,
    .tools-grid,
    .impact-grid,
    .ethics-grid,
    .recommendations-grid,
    .influencers-grid,
    .resources-grid,
    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .cardio-highlight,
    .mediq-overview {
        flex-direction: column;
    }
    
    .cardio-image,
    .mediq-logo {
        margin: 0 auto 1.5rem;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    header h2 {
        font-size: 1.3rem;
    }
    
    section h2 {
        font-size: 1.6rem;
    }
    
    section h3 {
        font-size: 1.4rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .two-columns,
    .timeline-container {
        grid-template-columns: 1fr;
    }
    
    .feature-item,
    .trend-item,
    .resource-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .feature-icon,
    .trend-icon,
    .resource-icon {
        margin-bottom: 0.75rem;
    }
    
    .cardio-stats,
    .impact-stats {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .container {
        width: 100%;
        padding: 0 10px;
    }
    
    header {
        padding: 1.5rem 0;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    header h2 {
        font-size: 1.1rem;
    }
    
    .card {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .features-list,
    .cardio-stats,
    .impact-stats {
        grid-template-columns: 1fr;
    }
    
    .course-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .course-level {
        margin-top: 0.5rem;
    }
    
    .course-details {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Melhorias de acessibilidade */
:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus,
a:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Melhorias de desempenho para dispositivos móveis */
@media (max-width: 768px) {
    .card:hover,
    .tool-card:hover,
    .influencer-card:hover,
    .resource-card:hover,
    .course-card:hover,
    .recommendation-item:hover {
        transform: none;
    }
    
    section {
        animation: none;
    }
}

/* Suporte a modo escuro */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #4dabf7;
        --secondary-color: #1a1a2e;
        --accent-color: #25c485;
        --light-color: #2d2d3a;
        --dark-color: #e9ecef;
        --text-color: #e9ecef;
        --card-bg: #1a1a2e;
        --header-bg: linear-gradient(135deg, #1a1a2e, #0b0b15);
    }
    
    body {
        background-color: #121212;
        color: var(--text-color);
    }
    
    .card,
    .tool-card,
    .influencer-card,
    .resource-card,
    .course-card,
    .timeline-content,
    .recommendation-item {
        background-color: var(--card-bg);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
    
    .feature,
    .impact-item,
    .ethics-item,
    .stat-item,
    .stat-box,
    .testimonial,
    .partnership {
        background-color: #2d2d3a;
    }
    
    .tag {
        background-color: #2d2d3a;
        color: #e9ecef;
    }
    
    th, td {
        border-color: #444;
    }
    
    th {
        background-color: #2d2d3a;
    }
    
    tr:nth-child(even) {
        background-color: #1a1a2e;
    }
}

/* Melhorias de carregamento */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* Animações otimizadas */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}