/* Number Base Converter: hide empty per-field messages so the grid stays tight. */
#tool p.error-text { margin: 0; }
#tool p.error-text:empty { display: none; }
#nb-info .stat-value { font-size: 1.2rem; }

/* .tool-ui .mono loses to the shared input reset selector, so restate it with an ID. */
#tool input.mono { font-family: var(--mono); font-size: 0.95rem; }