/* ============================================================
 * Utilities Bunker — DAC Output Calculator v2.1
 * File: /assets/css/modules/electronics/dac-output-calculator.v2.1.css
 * Purpose:
 *  - Tool-only layout + readout visuals + show-work formatting
 *  - Keep uniform with Ohm’s Law look/feel (cards, hero, lab, KPIs, chips)
 * Notes:
 *  - DO NOT edit ub-toolkit.v2.1.css
 *  - Mobile-first, 44x44 touch targets, clamp typography
 * ============================================================ */

/* ==============================
   Tool-scoped tokens
============================== */
:root{
  --dac-radius: 16px;
  --dac-gap: 14px;
}

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

@media (max-width: 980px){
  .ub-hero{ grid-template-columns: 1fr; }
}

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

/* ==============================
   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 (matches Ohm's Law risk pill vibe)
============================== */
.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 / Solve chips block
============================== */
.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);
}

/* Better focus rings on chips */
.ub-wheel .ub-chip:focus{
  outline: none;
  box-shadow: 0 0 0 4px var(--ub-focus);
  border-radius: 12px;
}

/* ==============================
   DAC visualization block
============================== */
.ub-dacviz{
  border: 1px solid var(--ub-border);
  border-radius: 14px;
  background: var(--ub-card-bg);
  padding: 12px;
}

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

.ub-dacviz-title{
  font-weight: 950;
  font-size: 13px;
  letter-spacing: .01em;
}

.ub-dacviz-meta{
  font-family: var(--ub-mono);
  font-weight: 950;
  font-size: 12px;
  color: var(--ub-muted);
}

/* Bar + fill */
.ub-dacviz-bar{
  height: 14px;
  border-radius: 999px;
  background: var(--ub-surface-3);
  border: 1px solid var(--ub-border);
  overflow:hidden;
}

.ub-dacviz-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 120ms ease;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .ub-dacviz-fill{ transition: none; }
}

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

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

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

/* Collapsible summary touch target (tool-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;
}

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