@media (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }
    
    .main-content {
        margin-left: 220px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 12px 0;
    }
    
    .sidebar-logo {
        padding: 0 12px 12px;
        margin-bottom: 12px;
    }
    
    .sidebar-menu a {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .main-content {
        margin-left: 0;
        padding: 12px;
    }
    
    .navbar {
        flex-direction: column;
        gap: 12px;
        padding: 12px;
    }
    
    .navbar-menu {
        flex-wrap: wrap;
        gap: 12px;
        margin-left: 0;
    }
    
    .navbar-user {
        margin-left: 0;
        width: 100%;
        justify-content: space-between;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 10px 8px;
    }
    
    .card {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 13px;
    }
    
    h1 { font-size: 24px; }
    h2 { font-size: 20px; }
    h3 { font-size: 18px; }
    
    .card {
        padding: 12px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .table-actions {
        flex-direction: column;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}