/* ── 9. Lab configuration — branding previews ── */
.preview-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-top: var(--space-4);
}

.preview-block {
    flex: 1 1 200px;
    min-width: 0;
}

.preview-img {
    display: block;
    max-height: 100px;
    width: auto;
    max-width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    margin-top: var(--space-2);
    background: var(--color-surface-elevated, #f1f5f9);
    object-fit: contain;
}

.preview-img--letterhead {
    max-height: 160px;
}

.preview-pdf-thumb {
    display: block;
    width: min(240px, 100%);
    height: 150px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    margin: var(--space-2) 0 var(--space-2);
}

.mono {
    font-family: ui-monospace, "Cascadia Code", "SF Mono", Menlo, monospace;
    font-size: var(--text-sm);
    color: var(--color-primary-dark);
    word-break: break-all;
}

.label-cap {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

/* Sidebar sign-out must be POST (Django CSRF); keep full-width button look */
.form-signout {
    margin: 0;
}

.form-signout .btn-signout {
    width: 100%;
    font: inherit;
}