.drop-zone.drag-over{border-color:var(--primary-color);background:var(--primary-light)}.preview-item{position:relative;background:var(--drop-zone-bg);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border-color)}.preview-image-container{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:#fff}.preview-image{width:100%;height:100%;object-fit:contain;transition:transform .3s ease}.zoom-controls{position:absolute;bottom:10px;right:10px;display:flex;gap:.5rem;background:rgba(0,0,0,.5);padding:.25rem;border-radius:var(--radius-sm);opacity:0;transition:opacity .3s ease}.preview-image-container:hover .zoom-controls{opacity:1}.zoom-btn{background:#fff;border:none;width:24px;height:24px;border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;color:var(--text-color)}.zoom-btn:hover{background:var(--primary-light);color:var(--primary-color)}.preview-info{padding:.75rem;font-size:.9rem;border-top:1px solid var(--border-color);color:var(--text-secondary)}.stamp-preview img{max-width:100%;max-height:100%;object-fit:contain;transition:all .3s ease}