/* ============ Responsive ============ */
@media (max-width: 768px) {
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 12px;
    }
    .file-card-thumb {
        height: 120px;
    }
    .filter-chips {
        gap: 6px;
    }
    .chip {
        padding: 4px 10px;
        font-size: 12px;
    }
    .section-actions {
        width: 100%;
    }
    .sort-select {
        flex: 1;
        min-width: 0;
    }
}

@media (max-width: 480px) {
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    .context-menu {
        min-width: 160px;
        left: 8px !important;
        right: 8px !important;
    }
    .batch-buttons {
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }
    .search-input {
        width: 100%;
    }
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    .file-item {
        padding: 12px 16px;
        flex-wrap: wrap;
    }
    .file-actions {
        width: 100%;
        justify-content: flex-end;
    }
}