/* ============================================================
   Document Viewer Page (dvw__ prefix)
   Route: /doc/document-viewer-page
   Split-pane: document list (left) + preview (right)
   ============================================================ */

.dvw {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.5rem;
    height: calc(100vh - 80px);
    overflow: hidden;
}

/* ── Header ── */
.dvw__header {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.dvw__header h1 {
    margin: 0 0.5rem 0 0;
    font-size: 1.3rem;
}

/* ── Error ── */
.dvw__error {
    color: var(--v2-danger, #c00);
    background: #fff5f5;
    border: 1px solid var(--v2-danger, #c00);
    padding: 0.5rem;
    border-radius: 4px;
    white-space: pre-wrap;
    font-size: 0.85rem;
    flex-shrink: 0;
}

/* ── Controls bar ── */
.dvw__controls {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    flex-shrink: 0;
}

.dvw__search {
    min-width: 200px;
    flex: 0 1 300px;
}

.dvw__category {
    min-width: 180px;
    flex: 0 1 250px;
}

.dvw__count {
    font-size: 0.8rem;
    color: var(--v2-text-muted, #999);
    padding-bottom: 4px;
}

/* ── Split pane ── */
.dvw__split {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    min-height: 0;
}

/* ── Left: Document list ── */
.dvw__list {
    flex: 0 0 420px;
    min-width: 320px;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--v2-border, #ddd);
    border-radius: 4px;
    overflow: hidden;
}

.dvw__list-scroll {
    flex: 1;
    overflow-y: auto;
}

.dvw__table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.8rem;
    table-layout: fixed;
}

.dvw__th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--v2-panel-bg, #f8f8f8);
    padding: 4px 6px;
    text-align: left;
    font-size: var(--slm-label-font-size, 0.75rem);
    font-weight: normal;
    color: var(--slm-label-color, #8B0000);
    border-bottom: 2px solid var(--v2-border, #ddd);
    white-space: nowrap;
}

.dvw__th--sortable {
    cursor: pointer;
    user-select: none;
}

.dvw__th--sortable:hover {
    color: var(--v2-accent, #2563eb);
}

.dvw__th--type {
    width: 60px;
}

.dvw__th--size {
    width: 80px;
}

.dvw__th--date {
    width: 120px;
}

.dvw__td {
    padding: 3px 6px;
    border-bottom: 1px solid var(--v2-border-light, #eee);
    vertical-align: middle;
    font-size: 0.8rem;
}

.dvw__td--ellipsis {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dvw__td--right {
    text-align: right;
}

.dvw__td--date {
    white-space: nowrap;
    font-size: 0.75rem;
    color: var(--v2-text-muted, #888);
}

.dvw__file-icon {
    margin-right: 4px;
    color: var(--v2-text-muted, #888);
}

.dvw__row {
    cursor: pointer;
}

.dvw__row:hover {
    background: var(--v2-row-hover, #f0f4ff);
}

.dvw__row--selected {
    background: var(--v2-row-selected, #dbeafe);
}

.dvw__row--selected:hover {
    background: var(--v2-row-selected, #dbeafe);
}

/* ── Paging ── */
.dvw__paging {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 4px 6px;
    border-top: 1px solid var(--v2-border, #ddd);
    font-size: 0.75rem;
    flex-shrink: 0;
}

.dvw__page-info {
    color: var(--v2-text-muted, #999);
}

/* ── Right: Detail / preview ── */
.dvw__detail {
    flex: 1;
    min-width: 0;
    border: 1px solid var(--v2-border, #ddd);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.dvw__detail-scroll {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.dvw__detail-header {
    padding: 0.75rem;
    border-bottom: 1px solid var(--v2-border, #ddd);
    flex-shrink: 0;
}

.dvw__detail-title {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.dvw__detail-title h2 {
    margin: 0;
    font-size: 1rem;
    line-height: 1.3;
}

.dvw__detail-filename {
    font-size: 0.75rem;
    color: var(--v2-text-muted, #999);
}

.dvw__file-icon--lg {
    font-size: 1.5rem;
    color: var(--v2-text-muted, #888);
    flex-shrink: 0;
    margin-top: 2px;
}

.dvw__detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--v2-text-muted, #888);
}

.dvw__detail-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* ── Preview area ── */
.dvw__preview {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

.dvw__preview-iframe {
    flex: 1;
    width: 100%;
    border: none;
    background: #fff;
}

.dvw__preview-noview {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    text-align: center;
    color: var(--v2-text-muted, #999);
}

.dvw__noview-icon {
    font-size: 3rem;
    color: var(--v2-text-muted, #ccc);
}

/* ── Utility ── */
.dvw__loading, .dvw__empty {
    color: var(--v2-text-muted, #999);
    font-style: italic;
    padding: 1rem;
    text-align: center;
}