/* FormSetEditV3Page -- BEM prefix: fse3__ */

/* -- Outer wrapper -- */
.fse3 {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.5rem;
}

/* -- Header row: h1 at top, buttons at bottom -- */
.fse3__header {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.fse3__header h1 {
    margin: 0 0.5rem 0 0;
    font-size: 1.3rem;
    line-height: 2rem;
    align-self: flex-start;
}

/* -- Page-level error -- */
.fse3__error {
    color: #c00;
    background: #fff5f5;
    border: 1px solid #c00;
    padding: 0.5rem;
    border-radius: 4px;
    white-space: pre-wrap;
    font-size: 0.85rem;
}

/* -- Two-column body (tree + editor) -- */
.fse3__body {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    min-height: 0;
}

.fse3__tree-panel {
    width: 320px;
    min-width: 260px;
    flex-shrink: 0;
}

.fse3__tree-title {
    font-weight: 600;
    font-size: 0.8rem;
}

.fse3__editor-panel {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border: 1px solid var(--slm-color-border, #ddd);
    border-radius: 4px;
    padding: 1rem;
    min-height: 200px;
}

.fse3__empty {
    color: var(--slm-muted, #999);
    font-style: italic;
    padding: 2rem 0;
}

/* -- Editor toolbar -- */
.fse3__editor-toolbar {
    margin: 0 0 10px 0;
    display: flex;
    flex-flow: row wrap;
    gap: 10px;
    align-items: flex-end;
}

.fse3__formset-name {
    font-size: 20px;
    font-weight: 600;
    color: inherit;
    padding: 2px 12px;
    border-radius: 4px;
    align-self: flex-start;
}

.fse3__editor-toolbar > .slm-v3-ibtn {
    align-self: flex-start;
}

.fse3__toolbar-right {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    margin-left: auto;
}

/* -- Groups row (separate row above Available/Selected) -- */
.fse3__groups-row {
    border: 1px solid var(--v2-border, #ddd);
    border-radius: 6px;
    padding: 8px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.fse3__groups-row h4 {
    margin: 0;
    white-space: nowrap;
    padding-top: 4px;
}

.fse3__groups-list {
    flex: 1 1 auto;
    min-width: 0;
}

/* -- Two-column layout (Available / [arrows] / Selected) -- */
.fse3__columns {
    display: flex;
    gap: 12px;
    flex-flow: row nowrap;
    align-items: stretch;
}

.fse3__transfer-buttons {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    flex-shrink: 0;
    padding: 0 2px;
}

.fse3__column-panel {
    flex: 1;
    border: 1px solid var(--v2-border, #ddd);
    border-radius: 6px;
    padding: 8px;
    min-width: 240px;
    display: flex;
    flex-direction: column;
}

.fse3__column-panel h4 {
    margin: 0;
}

.fse3__column-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    min-height: 42px;
}

.fse3__column-header h4 {
    margin: 0;
    flex: 1 1 auto;
}

.fse3__column-scroll {
    flex: 1 1 auto;
    min-height: 0;
}

/* -- Status bar -- */
.fse3__status {
    margin-top: 10px;
    color: var(--v2-text-muted, #999);
    font-size: 12px;
}