/* ── Range Calculator widget ──────────────────────────────────────── */
:root {
  --rca-paper:      #F4F5F0;
  --rca-paper-2:    #EAEBE6;
  --rca-paper-line: rgba(0,0,0,.10);
  --rca-l-fg:       #0B0C0E;
  --rca-l-fg-3:     #6B7178;
  --rca-ink:        #0B0C0E;
  --rca-ink-3:      #20242C;
  --rca-ink-line:   rgba(255,255,255,.09);
  --rca-d-fg:       #F4F5F2;
  --rca-d-fg-2:     #A7ADB5;
  --rca-d-fg-3:     #6B7178;
  --rca-volt:       #CCFF02;
  --rca-volt-deep:  #8FB300;
}

.rangecalc {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 56px;
  align-items: center;
}

/* ── Controls ─────────────────────────────────────────────────────── */
.rc-controls .rc-block { margin-bottom: 28px; }
.rc-controls .rc-block:last-child { margin-bottom: 0; }

.rc-controls .rc-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rca-l-fg-3, #6B7178);
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.rc-controls .rc-label b {
  color: var(--rca-l-fg, #0B0C0E);
  font-weight: 600;
}

/* segmented buttons */
.rc-seg {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.rc-seg button {
  cursor: pointer;
  flex: 1 1 0;
  min-width: max-content;
  background: var(--rca-paper-2, #EAEBE6);
  border: 1px solid var(--rca-paper-line, rgba(0,0,0,.10));
  border-radius: 12px;
  padding: 13px 14px;
  text-align: left;
  transition: border-color .16s, background .16s;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.rc-seg button .rs-n {
  font-size: 14px;
  font-weight: 600;
  color: var(--rca-l-fg, #0B0C0E);
}
.rc-seg button .rs-m {
  font-size: 11px;
  color: var(--rca-l-fg-3, #6B7178);
}
.rc-seg button:hover { border-color: var(--rca-l-fg, #0B0C0E); }
.rc-seg button[aria-selected="true"] {
  background: var(--rca-ink, #0B0C0E);
  border-color: var(--rca-ink, #0B0C0E);
}
.rc-seg button[aria-selected="true"] .rs-n { color: var(--rca-d-fg, #F4F5F2); }
.rc-seg button[aria-selected="true"] .rs-m { color: var(--rca-volt, #CCFF02); }

/* range slider */
.rc-slider-row input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--rca-ink, #0B0C0E) var(--fill, 50%),
    var(--rca-paper-line, rgba(0,0,0,.10)) var(--fill, 50%)
  );
  outline: none;
  cursor: pointer;
  margin-top: 8px;
}
.rc-slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--rca-volt, #CCFF02);
  border: 3px solid var(--rca-ink, #0B0C0E);
  cursor: grab;
}
.rc-slider-row input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--rca-volt, #CCFF02);
  border: 3px solid var(--rca-ink, #0B0C0E);
  cursor: grab;
}

/* ── Readout card ─────────────────────────────────────────────────── */
.rc-readout {
  background: var(--rca-ink, #0B0C0E);
  color: var(--rca-d-fg, #F4F5F2);
  border-radius: 20px;
  padding: 34px;
  border: 1px solid var(--rca-ink-line, rgba(255,255,255,.09));
}
.rc-readout .ro-lab {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rca-d-fg-3, #6B7178);
}
.rc-readout .ro-num {
  font-family: var(--ff-display, 'Archivo', sans-serif);
  font-weight: 800;
  font-stretch: 125%;
  font-size: clamp(72px, 9vw, 120px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--rca-volt, #CCFF02);
  margin-top: 8px;
}
.rc-readout .ro-num .u {
  color: var(--rca-d-fg, #F4F5F2);
  font-size: 26px;
  margin-left: 6px;
}

.rc-gauge {
  height: 8px;
  border-radius: 999px;
  background: var(--rca-ink-3, #20242C);
  margin-top: 26px;
  position: relative;
  overflow: hidden;
}
.rc-gauge .g-fill {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--rca-volt-deep, #8FB300), var(--rca-volt, #CCFF02));
  width: 0;
  transition: width .5s cubic-bezier(.2,.7,.2,1);
}

.rc-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--rca-d-fg-3, #6B7178);
}

.rc-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--rca-ink-line, rgba(255,255,255,.09));
  font-size: 12px;
  color: var(--rca-d-fg-2, #A7ADB5);
  line-height: 1.5;
}
.rc-foot svg {
  width: 16px;
  height: 16px;
  color: var(--rca-volt, #CCFF02);
  flex: none;
}

/* ── Mobile ────────────────────────────────────────────────────────── */
@media (max-width: 940px) {
  .rangecalc { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 500px) {
  .rc-readout { padding: 26px; }
}