.stats-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
    gap: 1.5rem; 
    margin-bottom: 2rem;
}

.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid #1e293b;
    display: none; /* Escondido por padrão */
    justify-content: space-around;
    align-items: center;
    z-index: 9999;
    padding-bottom: env(safe-area-inset-bottom);
}

@media (max-width: 768px) {
    .mobile-nav { display: flex !important; }
    .desktop-tabs { display: none !important; }
    .hide-mobile { display: none !important; }
}

.nav-button {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-weight: bold;
    font-size: 10px;
}
.nav-button.active { color: #3b82f6; }