/* ============================================================
   Utilities Bunker — Signal Wavelength in Cable (v2.1)
   File: /assets/css/modules/electronics/velocity-factor.v2.1.css
   Purpose:
   - Tool-only layout + wavelength visualization + work formatting
   - NO changes to ub-toolkit.v2.1.css
   - Mobile-first, 44x44 touch targets, clamp typography
   ============================================================ */

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

/* ============================== Hero layout ============================== */
.ub-hero-vf{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--vf-gap);
}

/* Tablets / small laptops and below */
@media (max-width: 980px){
  .ub-hero-vf{ grid-template-columns: 1fr; }
}

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

.ub-lab-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom: 8px;
}

.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;
  font-family: var(--ub-mono);
}

/* ============================== KPI tiles (reuses toolkit class names) ============================== */
.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;
  margin-top: 8px;
}

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

/* ============================== Wavelength visualization ============================== */
.ub-viz{
  margin-top: 12px;
  border-radius: 14px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
  padding: 12px;
}

.ub-viz-row{
  display:grid;
  grid-template-columns: 96px 1fr;
  gap: 10px;
  align-items:center;
  margin-bottom: 10px;
}

@media (max-width: 520px){
  .ub-viz-row{ grid-template-columns: 84px 1fr; }
}

.ub-viz-label{
  font-weight: 950;
  font-size: 12px;
  color: var(--ub-muted);
  letter-spacing: .04em;
  text-transform: uppercase;
}

.ub-viz-bar{
  height: 14px;
  border-radius: 999px;
  background: var(--ub-surface-3);
  border: 1px solid var(--ub-border);
  overflow:hidden;
}

.ub-viz-fill{
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(92deg, var(--ub-btn-grad-a), var(--ub-btn-grad-b));
  box-shadow: 0 10px 22px var(--ub-btn-glow);
  transition: width 180ms ease;
}

@media (prefers-reduced-motion: reduce){
  .ub-viz-fill{ transition: none; }
}

/* ============================== Presets row ============================== */
.ub-preset-row{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-top: 12px;
}

.ub-preset-row .ub-chip{
  min-height: 44px;
  padding: 10px 12px;
}

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

/* Make details/summary feel consistent and accessible (tool-only enhancement) */
.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 helper ============================== */
.ub-btn--block{ width: 100%; }

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