/* ============================================================
   Utilities Bunker — Transformer Efficiency (v2.1)
   File: /assets/css/modules/electronics/xfmr-eff.v2.1.css
   Purpose:
   - Tool-only layout + transformer lab visuals + work formatting
   - Mobile-first, 44×44 touch targets, clamp typography
   - No changes to ub-toolkit.v2.1.css
   ============================================================ */

/* ============================== Local tokens (tool-scoped) ============================== */
:root{
  --xfmr-radius: 16px;
  --xfmr-gap: 14px;
  --xfmr-soft: rgba(0,0,0,.06);
}

/* ============================== Header layout ============================== */
.xfmr-head{
  display:flex;
  gap:10px;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
}
.xfmr-h1{ margin:0; font-size:var(--ub-fs-5); }
.xfmr-sub{ margin:6px 0 0; }

/* ============================== Tool hero layout ============================== */
.xfmr-hero{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--xfmr-gap);
}
@media (max-width: 980px){
  .xfmr-hero{ grid-template-columns: 1fr; }
}

/* ============================== Lab panel ============================== */
.xfmr-lab{
  background: var(--ub-surface-2);
  border: 1px solid var(--ub-border);
  border-radius: var(--xfmr-radius);
  padding: 12px;
}
.xfmr-lab-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap: 10px;
  flex-wrap:wrap;
  margin-bottom: 8px;
}
.xfmr-lab-title{
  font-size: clamp(13px, 1.2vw, 14px);
  font-weight: 950;
  letter-spacing: .01em;
}
.xfmr-lab-sub{
  font-size: 12px;
  color: var(--ub-muted);
  margin-top: 2px;
}

/* ============================== KPI tiles ============================== */
.xfmr-kpis{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  justify-content:flex-end;
}
.xfmr-kpi{
  min-width: 112px;
  padding: 8px 10px;
  border-radius: 14px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
}
.xfmr-kpi .k{
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--ub-muted);
}
.xfmr-kpi .v{
  font-family: var(--ub-mono);
  font-weight: 950;
  font-size: 14px;
  margin-top: 2px;
}

/* ============================== Status pill + method chips ============================== */
.xfmr-pillrow{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 10px;
  flex-wrap:wrap;
}
.xfmr-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;
}
.xfmr-dot{
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ub-muted);
}

/* same "wheel" style as Ohm's tool, but scoped */
.xfmr-wheel{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 10px;
  margin-top: 10px;
}
.xfmr-wheel .ub-chip{
  min-height: 44px;
  padding: 10px 12px;
}

/* ============================== Gauge SVG ============================== */
.xfmr-gauge{
  width: 100%;
  height: auto;
  margin-top: 10px;
  display:block;
  border-radius: 14px;
}
/* Dark mode lift for SVG fill clarity (no hard colors) */
html.ub-theme-dark .xfmr-gauge rect[fill="rgba(0,0,0,.02)"]{ fill: rgba(255,255,255,.03); }
html.ub-theme-dark .xfmr-gauge text{ fill: rgba(255,255,255,.70); }
html.ub-theme-dark .xfmr-gauge [stroke="rgba(0,0,0,.10)"]{ stroke: rgba(255,255,255,.12); }
html.ub-theme-dark .xfmr-gauge [stroke="rgba(0,0,0,.18)"]{ stroke: rgba(255,255,255,.14); }
html.ub-theme-dark .xfmr-gauge [stroke="rgba(0,0,0,.16)"]{ stroke: rgba(255,255,255,.14); }
html.ub-theme-dark .xfmr-gauge [stroke="rgba(0,0,0,.35)"]{ stroke: rgba(255,255,255,.28); }
html.ub-theme-dark .xfmr-gauge [fill="rgba(0,0,0,.08)"]{ fill: rgba(255,255,255,.06); }
html.ub-theme-dark .xfmr-gauge [fill="rgba(0,0,0,.18)"]{ fill: rgba(255,255,255,.14); }
html.ub-theme-dark .xfmr-gauge [fill="rgba(0,0,0,.10)"]{ fill: rgba(255,255,255,.10); }

/* ============================== Presets row ============================== */
.xfmr-preset-row{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-top: 10px;
}
.xfmr-preset-row .ub-chip{
  min-height: 44px;
  padding: 10px 12px;
}

/* ============================== Method select block ============================== */
.xfmr-method{
  margin-bottom: 12px;
}
.xfmr-method-label{
  font-weight: 900;
  display:block;
  margin-bottom: 6px;
  font-size: var(--ub-fs-2);
}
.xfmr-method-select{
  width:100%;
  min-height: var(--ub-hit);
  padding:10px 12px;
  border-radius: var(--ub-radius-1);
  border:1px solid var(--ub-border);
  background: var(--ub-surface-1);
  color: var(--ub-text);
  font-size: var(--ub-fs-2);
}
.xfmr-method-select:focus-visible{
  outline:3px solid var(--ub-focus);
  outline-offset:2px;
}

/* ============================== Divider ============================== */
.xfmr-hr{
  border:none;
  border-top:1px solid var(--ub-border);
  margin:14px 0;
}

/* ============================== Toggles + PF ============================== */
.xfmr-toggles{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  align-items:flex-start;
}
.xfmr-chipcheck{
  display:flex;
  gap:8px;
  align-items:center;
}

/* PF row box */
.xfmr-pfrow{
  width:100%;
  border: 1px solid var(--ub-border);
  background: var(--ub-surface-2);
  border-radius: var(--ub-radius-2);
  padding: 12px;
}
.xfmr-pf-label{
  font-weight: 950;
  display:block;
  margin:0 0 6px;
}
#pf{
  width:100%;
  min-height: var(--ub-hit);
  padding:10px 12px;
  border-radius: var(--ub-radius-1);
  border:1px solid var(--ub-border);
  background: var(--ub-surface-1);
  color: var(--ub-text);
  font-size: var(--ub-fs-2);
}

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

/* ============================== Lists ============================== */
.xfmr-ol{
  margin:0;
  padding-left:18px;
}
.xfmr-ul{
  margin:0;
  padding-left:18px;
}
.xfmr-h3{ margin:12px 0 6px; }
.xfmr-p{ margin:0 0 10px; }

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

/* ============================== Small screens polish ============================== */
@media (max-width: 520px){
  .xfmr-kpi{ min-width: 98px; }
  .xfmr-wheel{ grid-template-columns: 1fr; }
}