/* ============================================================
   Utilities Bunker — Setup & Hold Time Margin (v2.1)
   File: /assets/css/modules/electronics/setup-hold.v2.1.css
   Purpose:
   - Tool-only layout + timing diagram visuals + work formatting
   - No changes to ub-toolkit.v2.1.css
   - Mobile-first, 44x44 touch targets, clamp typography
   ============================================================ */

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

/* ============================== Tool hero layout (match Ohm's Law feel) ============================== */
.ub-sh-hero{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--sh-gap);
}

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

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

/* Title/sub inside lab */
.ub-sh-lab .ub-lab-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap: 10px;
  flex-wrap:wrap;
  margin-bottom: 8px;
}
.ub-sh-lab .ub-lab-title{
  font-size: clamp(13px, 1.2vw, 14px);
  font-weight: 950;
  letter-spacing: .01em;
}
.ub-sh-lab .ub-lab-sub{
  font-size: 12px;
  color: var(--ub-muted);
  margin-top: 2px;
}

/* ============================== KPI tiles ============================== */
.ub-sh-lab .ub-kpis{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  justify-content:flex-end;
}
.ub-sh-lab .ub-kpi{
  min-width: 120px;
  padding: 8px 10px;
  border-radius: 14px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
}
.ub-sh-lab .ub-kpi .k{
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--ub-muted);
}
.ub-sh-lab .ub-kpi .v{
  font-family: var(--ub-mono);
  font-weight: 950;
  font-size: 14px;
  margin-top: 2px;
}

/* ============================== Risk 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);
}

/* ============================== Model chips (tool wheel) ============================== */
.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;
}
.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);
}

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

/* ============================== SVG timing diagram ============================== */
.ub-sh-svg{
  width: 100%;
  height: auto;
  margin-top: 10px;
  display:block;
  border-radius: 14px;
}

/* Improve contrast in dark mode (svg uses rgba) */
html.ub-theme-dark .ub-sh-svg text{
  fill: rgba(255,255,255,.72);
}
html.ub-theme-dark .ub-sh-svg path,
html.ub-theme-dark .ub-sh-svg rect,
html.ub-theme-dark .ub-sh-svg line{
  stroke: rgba(255,255,255,.22);
}

/* Specific elements that use accent should remain accenty */
html.ub-theme-dark #capEdge{
  stroke: rgba(249,58,19,.65);
}
html.ub-theme-dark #setupWin,
html.ub-theme-dark #holdWin{
  stroke: rgba(249,58,19,.40);
}

/* ============================== 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;
}

/* ============================== Inline hint + error stability ============================== */
.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; /* prevents layout jump */
}

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

/* Details/summary polish (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;
}

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

/* ============================== Small screens polish ============================== */
@media (max-width: 520px){
  .ub-sh-lab .ub-kpi{ min-width: 108px; }
}