@media (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }

    .main-content {
        margin-left: 220px;
    }

    .stats-grid, .cards {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

@media (max-width: 768px) {
    .stats-grid, .cards {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 12px;
    }

    th, td {
        padding: 10px 8px;
    }

    .card, .panel {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 13px;
    }

    h1 { font-size: 22px; }
    h2 { font-size: 19px; }
    h3 { font-size: 17px; }

    .card, .panel {
        padding: 14px;
    }

    .btn {
        padding: 8px 16px;
        font-size: 12px;
    }

    .table-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
        text-align: center;
    }
}