/* ============================================================
 * Utilities Bunker — Contrast Checker (v2.1)
 * File: /assets/css/modules/colors/contrast-checker.v2.1.css
 * Purpose:
 *  - Tool-only layout + preview stage + pass/fail cards
 *  - Mobile-first, 44x44 touch targets, clamp typography
 *  - No changes to ub-toolkit.v2.1.css
 * ============================================================ */

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

/* ============================== Tool hero layout ============================== */
.ub-hero{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--cc-gap);
}
@media (max-width: 980px){
  .ub-hero{ grid-template-columns: 1fr; }
}

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

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

.ub-preview-title{
  font-size: clamp(13px, 1.2vw, 14px);
  font-weight: 950;
  letter-spacing: .01em;
}
.ub-preview-sub{
  font-size: 12px;
  color: var(--ub-muted);
  margin-top: 2px;
}

/* KPI tiles (reusing ohm-style 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;
}

/* ============================== Preview stage ============================== */
.ub-preview-stage{
  margin-top: 10px;
}

.ub-preview-sample{
  border-radius: 18px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
  padding: 14px;
  min-height: 170px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  box-shadow: var(--ub-shadow);
}

/* Top meta pills */
.ub-preview-meta{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  align-items:center;
  justify-content:flex-start;
  margin-bottom: 10px;
}

.ub-pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height: 34px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--ub-border);
  background: rgba(255,255,255,.55);
  color: rgba(0,0,0,.78);
  font-weight: 900;
  font-size: 12px;
  font-family: var(--ub-mono);
}
html.ub-theme-dark .ub-pill{
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.86);
}

.ub-sample-wrap{
  display:block;
}

.ub-sample-text{
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.18;
  margin: 0;
}

.ub-sample-sub{
  margin-top: 10px;
  color: currentColor;
  opacity: .85;
  font-size: 13px;
}

/* ============================== Pass/fail grid ============================== */
.ub-passgrid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 10px;
  margin-top: 12px;
}

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

.ub-passcard{
  border-radius: 16px;
  border: 1px solid var(--ub-border);
  background: var(--ub-card-bg);
  padding: 10px 12px;
  min-height: 74px;
  box-shadow: var(--ub-shadow);
}

/* statuses (JS toggles these classes) */
.ub-pass--ok{
  border-color: rgba(34,197,94,.45);
  box-shadow: 0 0 0 4px rgba(34,197,94,.12), var(--ub-shadow);
}
.ub-pass--no{
  border-color: rgba(239,68,68,.45);
  box-shadow: 0 0 0 4px rgba(239,68,68,.12), var(--ub-shadow);
}

/* ============================== Inputs row tweaks ============================== */
/* Keep input + color picker stacked and touch-friendly */
.ub-field .ub-inputrow{
  display:block;
}
.ub-field .ub-inputrow > input{
  display:block;
  width:100%;
}
.ub-colorpick{
  margin-top: 8px;
  width: 100%;
  min-height: var(--ub-hit);
  padding: 6px 10px;
  border-radius: var(--ub-radius-1);
  border: 1px solid var(--ub-border);
  background: var(--ub-surface-1);
  cursor: pointer;
}

/* Ensure color input visible in dark mode */
html.ub-theme-dark .ub-colorpick{
  background: rgba(255,255,255,.03);
}

/* ============================== Text size chips layout ============================== */
.ub-wheel{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 10px;
}
.ub-wheel .ub-chip{
  min-height: 44px;
  padding: 10px 12px;
}

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

/* Improve details summary tap 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;
}

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

/* ============================== Small screens polish ============================== */
@media (max-width: 520px){
  .ub-kpi{ min-width: 98px; }
  .ub-preview-sample{ padding: 12px; }
  .ub-pill{ width: 100%; justify-content:flex-start; }
}