.calc {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--c-forest);
}

.calc::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(50% 40% at 50% 0%, rgb(226 201 154 / 0.14), transparent 70%),
    radial-gradient(40% 50% at 100% 100%, rgb(10 142 122 / 0.12), transparent 70%);
}

.calc__card {
  display: grid;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--c-forest-2);
  box-shadow:
    0 0 0 1px var(--c-line-dark),
    var(--shadow-lg);
}

/* ---------- Form ---------- */

.calc__form {
  display: grid;
  gap: 32px;
  align-content: start;
  padding: clamp(22px, 4vw, 48px);
  background: var(--c-bg);
  color: var(--c-ink);
}

.calc__form[data-mode='estimate'] [data-panel='manual'],
.calc__form[data-mode='manual'] [data-panel='estimate'] {
  display: none;
}

.calc__group {
  display: grid;
  gap: 18px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.calc__legend {
  margin-bottom: 18px;
  padding: 0;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: var(--caps-track);
  text-transform: uppercase;
  color: var(--c-brass-ink);
}

.calc__hint {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--c-muted);
}

.calc__pill {
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--c-forest);
  color: var(--c-on-dark);
  font-size: var(--fs-sm);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* Segmented control */
.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  background: var(--c-sand);
}

.seg--plans {
  grid-template-columns: repeat(3, 1fr);
  border-radius: 18px;
}

.seg label {
  position: relative;
  display: grid;
}

.seg input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.seg span {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: var(--fs-ui);
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  color: var(--c-ink-2);
  cursor: pointer;
  transition:
    background-color var(--dur-ui),
    color var(--dur-ui),
    box-shadow var(--dur-ui);
}

.seg--plans span {
  min-height: 58px;
  border-radius: 14px;
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
}

.seg small {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--c-muted);
}

.seg span:hover {
  color: var(--c-ink);
}

.seg input:checked + span {
  background: var(--c-surface);
  color: var(--c-ink);
  box-shadow: var(--shadow-sm);
}

.seg input:focus-visible + span {
  outline: 2px solid var(--c-brass);
  outline-offset: 2px;
}

/* Chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.chip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  background: var(--c-surface);
  font-size: var(--fs-ui);
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color var(--dur-ui),
    border-color var(--dur-ui),
    color var(--dur-ui);
}

.chip .icon {
  display: none;
  width: 16px;
  height: 16px;
  stroke-width: 2.5;
}

.chip span:hover {
  border-color: var(--c-forest-3);
}

.chip input:checked + span {
  border-color: var(--c-forest);
  background: var(--c-forest);
  color: var(--c-on-dark);
}

.chip input:checked + span .icon {
  display: block;
}

.chip input:focus-visible + span {
  outline: 2px solid var(--c-brass);
  outline-offset: 2px;
}

/* Range */
.range {
  --p: 50%;
  width: 100%;
  height: 28px;
  margin: 0;
  background: transparent;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.range::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background:
    linear-gradient(var(--c-forest), var(--c-forest)) 0 / var(--p) 100% no-repeat,
    var(--c-sand-2);
}

.range::-webkit-slider-thumb {
  width: 24px;
  height: 24px;
  margin-top: -9px;
  border: 2px solid var(--c-forest);
  border-radius: 50%;
  background: var(--c-surface);
  box-shadow: var(--shadow-sm);
  -webkit-appearance: none;
  transition: transform var(--dur-ui) var(--ease);
}

.range:active::-webkit-slider-thumb {
  transform: scale(1.12);
}

.range::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--c-sand-2);
}

.range::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--c-forest);
}

.range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 2px solid var(--c-forest);
  border-radius: 50%;
  background: var(--c-surface);
}

.range:focus-visible {
  outline: none;
}

.range:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px rgb(181 141 74 / 0.4);
}

/* ---------- Result ---------- */

.calc__result {
  padding: clamp(22px, 4vw, 48px);
  color: var(--c-on-dark);
}

.calc__sticky {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: grid;
  gap: 28px;
}

.calc__result-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-on-dark-2);
}

.calc__net {
  display: block;
  margin-top: 8px;
  font-family: var(--font-serif);
  font-size: clamp(48px, 5.2vw, 66px);
  font-weight: var(--fw-display);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-brass-light);
  font-variant-numeric: tabular-nums;
}

.calc__year {
  margin-top: 10px;
  font-size: var(--fs-md);
  color: var(--c-on-dark-2);
  font-variant-numeric: tabular-nums;
}

.calc__year b {
  color: var(--c-on-dark);
}

.calc__share {
  margin-bottom: 12px;
  font-size: var(--fs-sm);
  color: var(--c-on-dark-2);
}

.calc__share b {
  color: var(--c-on-dark);
}

.calc__bar {
  display: flex;
  gap: 2px;
  height: 14px;
}

.calc__bar span {
  flex: 1 1 0;
  min-width: 0;
  border-radius: 4px;
  transition:
    flex-grow 0.9s var(--ease),
    opacity var(--dur-ui);
}

.calc__bar [data-seg='net'],
.swatch--net {
  background: var(--c-chart-net);
}

.calc__bar [data-seg='fee'],
.swatch--fee {
  background: var(--c-chart-fee);
}

.calc__bar [data-seg='portal'],
.swatch--portal {
  background: var(--c-chart-portal);
}

.calc__bar [data-seg='costs'],
.swatch--costs {
  background: var(--c-chart-cost);
}

.calc__bar.is-focus span:not(.is-active) {
  opacity: 0.3;
}

.calc__rows {
  display: grid;
}

.calc__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--c-line-dark);
  font-size: var(--fs-md);
}

.calc__row dt {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-on-dark-2);
  transition: color var(--dur-ui);
}

.calc__row dt small {
  font-size: var(--fs-xs);
}

.calc__row dd {
  font-weight: 600;
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.calc__row[data-row] {
  cursor: default;
}

.calc__row.is-active dt {
  color: var(--c-on-dark);
}

.calc__row--total {
  border-bottom: 0;
  padding-top: 16px;
}

.calc__row--total dt {
  color: var(--c-on-dark);
  font-weight: 700;
}

.calc__row--total dd {
  font-size: var(--fs-xl);
}

.swatch {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 3px;
}

.calc__disclaimer {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--c-on-dark-2);
}

@media (max-width: 519px) {
  .seg span {
    font-size: var(--fs-sm);
  }
}

@media (min-width: 1000px) {
  .calc__card {
    grid-template-columns: 1.12fr 0.88fr;
  }
}