.file-preview-host { min-width: 0; width: 100%; }
.file-preview-host:empty { display: none; }
.file-preview { min-width: 0; margin-top: 12px; border: 1px solid var(--portal-line, var(--border)); border-radius: 10px; background: var(--portal-card, var(--surface)); color: var(--text); overflow: hidden; }
.file-preview__summary { display: flex; align-items: center; gap: 12px; padding: 12px 14px; cursor: pointer; font-size: 12px; }
.file-preview__summary::before { content: "▾"; color: var(--ui-label, #315f8a); }
.file-preview:not([open]) > summary::before { content: "▸"; }
.file-preview__summary > strong { flex-shrink: 0; font-weight: 650; }
.file-preview__summary > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.file-preview__body { padding: 0 14px 12px; }
.file-preview .file-preview__hint { margin: 0 0 10px; color: var(--muted); font-size: 11px; }
.file-preview__toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.file-preview input, .file-preview select { box-sizing: border-box; min-height: 32px; padding: 6px 8px; border: 1px solid var(--portal-line, var(--border)); border-radius: 5px; background: var(--portal-card, var(--surface)); color: var(--text); font: inherit; font-size: 12px; }
.file-preview input:focus-visible, .file-preview button:focus-visible, .file-preview select:focus-visible, .file-preview__scroll:focus-visible { outline: 2px solid var(--apple-blue); outline-offset: 2px; }
.file-preview__search { width: 180px; max-width: 100%; }
.file-preview__sheet { display: flex; align-items: center; gap: 8px; font-size: 12px; }
.file-preview__sheet select { max-width: 160px; }
.file-preview__nav { display: flex; align-items: center; gap: 9px; font-size: 11px; color: var(--muted); margin-left: auto; }
.file-preview button { min-height: 30px; padding: 5px 10px; border: 1px solid var(--portal-line, var(--border)); border-radius: 6px; background: var(--portal-card, var(--surface)); color: var(--ui-label, #315f8a); cursor: pointer; font: inherit; font-size: 12px; }
.file-preview button:disabled { opacity: .45; cursor: default; }
.file-preview__scroll { max-width: 100%; overflow: auto; border: 1px solid var(--portal-line, var(--border)); border-radius: 6px; overscroll-behavior: contain; }
.file-preview table { border-collapse: separate; border-spacing: 0; width: max-content; min-width: 100%; table-layout: fixed; font-size: 12px; }
.file-preview th, .file-preview td { box-sizing: border-box; min-width: 150px; max-width: 240px; padding: 7px 9px; border-right: 1px solid var(--portal-line, var(--border)); border-bottom: 1px solid var(--portal-line, var(--border)); text-align: left; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-preview thead th { background: var(--portal-soft, var(--surface-2)); font-weight: 500; }
.file-preview th > small { display: block; margin-bottom: 3px; color: var(--muted); font-size: 9px; }
.file-preview th > input { display: block; width: 155px; border-color: transparent; background: transparent; font-weight: 650; }
.file-preview th > input:hover { border-color: var(--portal-line, var(--border)); }
.file-preview th > input.is-edited { border-color: var(--apple-blue); background: var(--portal-card, var(--surface)); }
.file-preview th.file-preview__number { position: sticky; left: 0; z-index: 1; min-width: 34px; width: 34px; max-width: 34px; text-align: center; background: var(--portal-soft, var(--surface-2)); color: var(--muted); font-size: 10px; font-weight: 500; }
.file-preview tr:last-child td, .file-preview tbody tr:last-child th { border-bottom: 0; }
.file-preview__actions { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.file-preview__actions > button:first-child { margin-right: auto; }
.file-preview button.file-preview__primary { background: var(--workflow-primary, #284c77); border-color: var(--workflow-primary, #284c77); color: var(--workflow-on-primary, #fff); }
.file-preview .file-preview__status { margin: 9px 0 0; font-size: 11px; color: var(--muted); line-height: 1.5; }
.file-preview__status.is-dirty { color: var(--ui-label, #315f8a); }
.explorer-file-previews { grid-column: 1 / -1; min-width: 0; }
.csv-slots:has(.file-preview-host) { grid-template-columns: minmax(0, 1fr); }
.csv-slot:has(.file-preview-host) { min-width: 0; max-width: 100%; box-sizing: border-box; }
.csv-slot__body:has(> .file-preview-host), .csv-slot__main:has(.file-preview-host) { flex: 1; width: 0; min-width: 0; }
#view-atlas-search .request-page .file-preview input { min-height: 32px; padding: 6px 8px; border-radius: 5px; font-size: 12px; }
#view-atlas-search .request-page .file-preview thead input { width: 155px; background: transparent; border-color: transparent; }
#view-atlas-search .request-page .file-preview thead input.is-edited { background: var(--portal-card, var(--surface)); border-color: var(--apple-blue); }
@media (max-width: 600px) {
  .csv-slot__main:has(.file-preview-host) { width: 100%; flex: auto; }
  .file-preview__body { padding: 0 10px 10px; }
  .file-preview__summary { padding: 11px 10px; }
  .file-preview__actions { gap: 6px; }
  .file-preview__actions > button { font-size: 11px; }
  .file-preview__search { width: 145px; }
}