/* ============================================================
 * Utilities Bunker — UART Baud Rate Calculator v2.1
 * File: /assets/css/modules/electronics/baud.v2.1.css
 * Purpose:
 * - Tool-only layout + readout panel visuals + work formatting
 * - No changes to ub-toolkit.v2.1.css required
 * - Mobile-first, 44x44 touch targets, clamp typography
 * ============================================================ */

/* ============================== Local tokens (tool-scoped) ============================== */
:root{
  --baud-radius: 16px;
  --baud-gap: 14px;
}

/* ============================== Tool hero layout ============================== */
.ub-hero{
  display:grid;
  grid-template-columns: 1.10fr 0.90fr;
  gap: var(--baud-gap);
}

/* Stack on tablet/mobile */
@media (max-width: 980px){
  .ub-hero{ grid-template-columns: 1fr; }
}

/* ============================== Readout panel ============================== */
.ub-lab{
  background: var(--ub-surface-2);
  border: 1px solid var(--ub-border);
  border-radius: var(--baud-radius);
  padding: 12px;
}

.ub-lab-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap: 10px;
  flex-wrap:wrap;
  margin-bottom: 10px;
}

.ub-lab-title{
  font-size: clamp(13px, 1.2vw, 14px);
  font-weight: 950;
  letter-spacing: .01em;
}

.ub-lab-sub{
  font-size: 12px;
  color: var(--ub-muted);
  margin-top: 2px;
}

/* ============================== KPI tiles ============================== */
.ub-kpis{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  justify-content:flex-end;
}

.ub-kpi{
  min-width: 112px;
  padding: 8px 10px;
  border-radius: 14px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
}

.ub-kpi .k{
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--ub-muted);
}

.ub-kpi .v{
  font-family: var(--ub-mono);
  font-weight: 950;
  font-size: 14px;
  margin-top: 2px;
}

/* ============================== Status pill ============================== */
.ub-risk{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
  font-size: 12px;
  font-weight: 950;
  min-height: 44px;
}

.ub-dot{
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ub-muted);
}

/* ============================== Mode chips grid ============================== */
.ub-wheel{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 10px;
  margin-top: 10px;
}

.ub-wheel .ub-chip{
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--ub-border);
  background: var(--ub-chip-bg);
  color: var(--ub-chip-text);
  font-weight: 900;
  cursor: pointer;
  user-select:none;
}

.ub-wheel .ub-chip:hover{ background: var(--ub-chip-hover); }

.ub-wheel .ub-chip[aria-pressed="true"]{
  border-color: rgba(249,58,19,.55);
  box-shadow: 0 0 0 4px rgba(249,58,19,.12);
}

.ub-wheel .ub-chip:focus{
  outline: none;
  box-shadow: 0 0 0 4px var(--ub-focus);
  border-radius: 10px;
}

/* ============================== Mini reference block ============================== */
.ub-mini-ref{
  border: 1px solid var(--ub-border);
  border-radius: var(--ub-radius-2);
  background: linear-gradient(180deg, var(--ub-card-bg), var(--ub-surface-2));
  overflow: hidden;
}

.ub-mini-ref-title{
  padding: 10px 12px;
  border-bottom: 1px solid var(--ub-border);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ub-muted);
  background: var(--ub-surface-2);
}

.ub-mini-ref-list{
  list-style: none;
  margin: 0;
  padding: 6px 0;
}

.ub-mini-ref-list li{
  position: relative;
  padding: 10px 12px 10px 36px;
  line-height: 1.4;
  font-size: 13px;
  border-bottom: 1px solid rgba(0,0,0,.06);
}

html.ub-theme-dark .ub-mini-ref-list li{
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.ub-mini-ref-list li::before{
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--ub-btn-grad-a), var(--ub-btn-grad-b));
  box-shadow: 0 0 0 3px rgba(249,58,19,.12);
}

.ub-mini-ref-list li:last-child{ border-bottom: 0; }

/* ============================== Help hint + inline error polish ============================== */
.hint{
  margin-top: 6px;
  font-size: 12px;
  color: var(--ub-muted);
}

.ub-inline-error{
  margin-top: 6px;
  font-size: 12px;
  color: var(--ub-danger);
  font-weight: 800;
  min-height: 16px; /* keeps layout stable */
}

/* ============================== Work area ============================== */
.ub-work{
  font-family: var(--ub-mono);
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap:anywhere;
}

/* Details styling enhancement (tool only) */
.ub-collapsible summary{
  cursor:pointer;
  font-weight: 950;
  min-height: 44px;
  display:flex;
  align-items:center;
}

.ub-collapsible summary:focus{
  outline: none;
  box-shadow: 0 0 0 4px var(--ub-focus);
  border-radius: 12px;
}

/* ============================== Rail button block helper (tool-only) ============================== */
.ub-btn--block{ width: 100%; }

/* ============================== Small screens polish ============================== */
@media (max-width: 520px){
  .ub-kpi{ min-width: 98px; }
}