.preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
    .preview-panel { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; padding: 12px; }
    .preview-panel img { width: 100%; height: 180px; object-fit: contain; border-radius: 6px; background: #111; display: block; }
    .preview-label { font-size: 12px; color: #9ca3af; margin-bottom: 6px; }
    .preview-size { font-size: 13px; font-weight: 600; color: #e0e0e0; margin-top: 6px; }
    .preview-size .size-saved { color: #34d399; margin-left: 6px; font-size: 12px; }
    .quality-row { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
    .quality-row label { font-size: 13px; color: #9ca3af; white-space: nowrap; }
    .quality-val { font-size: 14px; font-weight: 700; color: #00f5ff; min-width: 34px; text-align: right; }
    @media (max-width: 500px) { .preview-grid { grid-template-columns: 1fr; } }