/* Mobile (<768px) */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        text-align: center;
    }
    .hero h1 {
        font-size: 1.6rem;
    }
    .stat-number {
        font-size: 1.5rem;
    }
    .hero-stats {
        gap: 1rem;
    }
    .stat-card {
        padding: 0.7rem 1rem;
        min-width: 120px;
    }
    .container {
        padding: 1rem;
    }
    h2 {
        font-size: 1.4rem;
    }
    .flex-charts {
        flex-direction: column;
        gap: 1.5rem;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .table-def th, .table-def td {
        padding: 8px;
        font-size: 0.85rem;
    }
}

/* Tablette (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .container {
        max-width: 90%;
    }
    .hero h1 {
        font-size: 1.9rem;
    }
}