.canvas-preview {
            background-color: #f8f9fc;
            border-radius: 12px;
            padding: 1rem;
            text-align: center;
            border: 1px solid #dee2e6;
        }
        .mosaic-canvas {
            width: 100%;
            height: auto;
            background-color: #f1f2f6;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            display: block;
            margin: 0 auto;
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 0.5rem 0;
            font-size: 0.85rem;
        }
        .control-group {
            background: #f8f9fa;
            padding: 1rem;
            border-radius: 12px;
            margin: 1rem 0;
        }
        .batch-image-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 1.5rem;
            max-height: 500px;
            overflow-y: auto;
            padding: 0.5rem;
        }
        .batch-card {
            background: white;
            border-radius: 16px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            width: 220px;
            padding: 0.75rem;
            transition: 0.2s;
            border: 1px solid #e9ecef;
        }
        .batch-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.1);
        }
        .batch-preview {
            text-align: center;
        }
        .batch-preview canvas {
            width: 100%;
            height: auto;
            border-radius: 8px;
            background: #f1f2f6;
            margin-bottom: 8px;
        }
        .batch-filename {
            font-size: 0.75rem;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: 6px;
        }
        .btn-remove {
            margin-top: 8px;
            width: 100%;
        }
        .tab-content {
            padding-top: 1.5rem;
        }
        .batch-control-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            margin: 1rem 0;
            background: #f8f9fa;
            padding: 1rem;
            border-radius: 12px;
        }