/* ============================================================
   Utilities Bunker — File Size Converter (v2.1)
   File: /assets/css/modules/convert/file-size-converter.v2.1.css
   Purpose:
   - Tool-only layout + comparison panels + result styling
   - No changes to ub-toolkit.v2.1.css
   - Mobile-first, responsive, accessible, UB-CERT aligned
   ============================================================ */

/* Local tool tokens */
:root{
  --fsc-radius: 16px;
  --fsc-gap: 14px;
  --fsc-soft: rgba(0,0,0,.06);
  --fsc-soft-strong: rgba(0,0,0,.10);
  --fsc-accent: rgba(249,58,19,.16);
  --fsc-accent-border: rgba(249,58,19,.34);
}

html.ub-theme-dark:root{
  --fsc-soft: rgba(255,255,255,.05);
  --fsc-soft-strong: rgba(255,255,255,.10);
  --fsc-accent: rgba(249,58,19,.14);
  --fsc-accent-border: rgba(249,58,19,.42);
}

/* Main hero layout */
.ub-hero{
  display:grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: var(--fsc-gap);
}

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

/* Left conversion panel */
.ub-panel{
  background: var(--ub-surface-2);
  border: 1px solid var(--ub-border);
  border-radius: var(--fsc-radius);
  padding: 12px;
}

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

.ub-panel-title{
  font-size: clamp(13px, 1.2vw, 14px);
  font-weight: 950;
  letter-spacing: .01em;
}

.ub-panel-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;
  overflow-wrap:anywhere;
  word-break:break-word;
}

/* Mode chips */
.ub-mode-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin: 6px 0 12px;
}

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

.ub-mode-row .ub-chip[aria-pressed="true"]{
  border-color: rgba(249,58,19,.55);
  box-shadow: 0 0 0 4px rgba(249,58,19,.12);
}

/* Results grid */
.ub-results-grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
}

@media (max-width: 760px){
  .ub-results-grid{
    grid-template-columns: 1fr;
  }
}

/* Result cards */
.ub-result-card{
  background: var(--ub-card-bg);
  border: 1px solid var(--ub-border);
  border-radius: 16px;
  overflow: hidden;
  min-width: 0;
}

.ub-result-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--ub-border);
  background: linear-gradient(180deg, var(--ub-surface-2), transparent);
}

.ub-result-title{
  margin:0;
  font-size: 14px;
  font-weight: 950;
  letter-spacing: .01em;
}

.ub-result-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--ub-border);
  background: var(--ub-surface-2);
  font-size: 11px;
  font-weight: 900;
  color: var(--ub-muted);
  white-space: nowrap;
}

/* Result rows */
.ub-result-list{
  padding: 6px;
}

.ub-result-row{
  display:grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items:center;
  gap:10px;
  padding: 12px;
  border-radius: 12px;
  min-height: 44px;
  transition: background .15s ease, border-color .15s ease, transform .15s ease;
}

.ub-result-row + .ub-result-row{
  margin-top: 4px;
}

.ub-result-row span{
  color: var(--ub-text);
  font-size: 13px;
  font-weight: 800;
  overflow-wrap:anywhere;
  word-break:break-word;
}

.ub-result-row strong{
  font-family: var(--ub-mono);
  font-weight: 950;
  font-size: 13px;
  text-align:right;
  overflow-wrap:anywhere;
  word-break:break-word;
}

@media (hover: hover){
  .ub-result-row:hover{
    background: var(--fsc-soft);
  }
}

/* Best-fit highlight */
.ub-result-row.is-best,
.ub-result-row[data-best="true"]{
  background: var(--fsc-accent);
  border: 1px solid var(--fsc-accent-border);
  box-shadow: inset 0 0 0 1px rgba(249,58,19,.08);
}

.ub-result-row.is-best span,
.ub-result-row[data-best="true"] span,
.ub-result-row.is-best strong,
.ub-result-row[data-best="true"] strong{
  color: var(--ub-text);
}

/* Slider / controls polish */
.ub-slider-row{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
}

.ub-range{
  width: min(420px, 100%);
  height: 44px;
  accent-color: var(--ub-btn-grad-b);
}

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

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

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

/* Details 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;
}

/* Table polish */
.ub-table td,
.ub-table th{
  vertical-align: top;
}

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

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

  .ub-panel,
  .ub-result-card{
    border-radius: 14px;
  }

  .ub-result-row{
    grid-template-columns: 1fr;
    align-items:flex-start;
  }

  .ub-result-row strong{
    text-align:left;
  }

  .ub-result-head{
    align-items:flex-start;
    flex-direction:column;
  }
}

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