@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    nav ul {
        margin-top: 15px;
        justify-content: center;
    }

    nav ul li {
        margin: 0 10px;
    }

    .dashboard-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        margin-bottom: 20px;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%;
        padding: 10px;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 8px 15px;
        font-size: 14px;
    }

    .table {
        display: block;
        overflow-x: auto;
    }
}