/* ---------- Tab Cai dat ---------- */
.layout-settings { grid-template-columns: 1fr; max-width: 640px; }
.settings-section + .settings-section { margin-top: 18px; }
.settings-help { margin: 0 0 16px; font-size: 13px; color: var(--muted); line-height: 1.5; }
.timing-rows { display: flex; flex-direction: column; gap: 10px; }
.timing-row {
  display: grid;
  grid-template-columns: 110px 100px 1fr;
  gap: 10px;
  align-items: center;
}
.timing-label small { color: var(--muted); font-weight: 400; }
.timing-row input,
.timing-row select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  min-width: 0;
}
.timing-row select { max-width: 140px; }
.timing-row.invalid input { border-color: var(--red); }
.settings-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; }
@media (max-width: 480px) {
  .timing-row { grid-template-columns: 90px 80px 1fr; }
}