.grid-preview-canvas {
            max-width: 100%;
            height: auto;
            background: #f4f4f4;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            border: 1px solid var(--border-color);
        }
        .tile-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .tile-card {
            background: white;
            border-radius: 12px;
            padding: 0.75rem;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: transform 0.2s ease;
            border: 1px solid rgba(0,0,0,0.08);
        }
        .tile-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .tile-canvas {
            width: 100%;
            aspect-ratio: 1 / 1;
            background-color: #f0f0f0;
            border-radius: 8px;
            border: 1px solid #ddd;
            object-fit: contain;
        }
        .download-tile-btn {
            margin-top: 0.5rem;
            width: 100%;
            font-size: 0.8rem;
        }
        .drag-drop-zone {
            border: 2px dashed #cbd5e1;
            border-radius: 20px;
            background: #f8fafc;
            padding: 2rem 1rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease;
            margin-bottom: 1rem;
        }
        .drag-drop-zone.drag-over {
            border-color: var(--primary-color);
            background-color: #eef2ff;
            transform: scale(0.99);
        }
        .drag-drop-zone i {
            font-size: 2.8rem;
            color: #94a3b8;
            margin-bottom: 0.5rem;
        }
        .drag-drop-zone .drag-text {
            font-weight: 500;
            color: #1e293b;
        }
        .drag-drop-zone .drag-sub {
            font-size: 0.85rem;
            color: #64748b;
        }
        .file-input-hidden {
            display: none;
        }
        .preview-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0 0.5rem;
        }
        .badge-feature {
            background: var(--primary-color);
            color: white;
        }
        .example-images-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin: 15px 0;
        }
        .demo-thumb {
            width: 70px;
            height: 70px;
            object-fit: cover;
            border-radius: 12px;
            cursor: pointer;
            border: 2px solid transparent;
            transition: 0.1s;
        }
        .demo-thumb:hover {
            border-color: var(--primary-color);
            transform: scale(0.98);
        }
        .info-banner {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: 20px;
        }
        .step-badge {
            background: var(--primary-color);
            color: white;
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 40px;
            font-weight: bold;
            margin-right: 12px;
        }
        .feature-icon {
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .tile-container {
                gap: 0.6rem;
            }
            .drag-drop-zone {
                padding: 1.2rem;
            }
        }