.converter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 24px 0;
  }
  .config-panel, .preview-panel {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    overflow: hidden;
  }
  .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--ad-bg);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
  }
  .panel-body {
    padding: 20px;
  }
  .dropzone-modern {
    background: var(--dropzone-bg);
    border: 2px dashed var(--dropzone-border);
    border-radius: 24px;
    padding: 20px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
  }
  .dropzone-modern:hover {
    border-color: var(--primary);
    background: var(--card-bg);
  }
  .icon-lg { font-size: 36px; margin-bottom: 8px; }
  .size-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 8px;
  }
  .size-options label {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
  }
  .preview-area {
    padding: 20px;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .preview-image {
    max-width: 200px;
    max-height: 200px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
  }
  @media (max-width: 768px) {
    .converter-grid {
      grid-template-columns: 1fr;
    }
  }