/* Explicit empty states for chemical introductions and attachments. */
.ui-site .chemicals-detail-empty {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 16px 0 24px;
    padding: 18px 20px;
    color: var(--color-text-secondary);
    background: var(--color-page-bg);
    border: 1px dashed var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.7;
}
.ui-site .chemicals-detail-empty > svg { flex-shrink: 0; width: 30px; height: 30px; color: var(--color-text-disabled); }
.ui-site .chemicals-detail-empty p { margin: 0; }
.ui-site .chemicals-detail-empty .chemicals-detail-empty-title { margin-bottom: 3px; color: var(--color-text-secondary); font-size: 15px; font-weight: 600; }
@media (max-width: 800px) {
    .ui-site .chemicals-detail-empty { gap: 12px; padding: 16px; }
}