.pbcalc {
  --pbcalc-ink: #172321;
  --pbcalc-muted: #5b6966;
  --pbcalc-border: #d9e2df;
  --pbcalc-surface: #f6f9f8;
  --pbcalc-accent: #0b7565;
  --pbcalc-accent-dark: #07594e;
  --pbcalc-accent-soft: #e7f5f1;
  --pbcalc-warning: #8a4d00;
  --pbcalc-warning-soft: #fff4dc;
  color: var(--pbcalc-ink);
  margin: 32px 0 40px;
}

.pbcalc *,
.pbcalc *::before,
.pbcalc *::after {
  box-sizing: border-box;
}

.pbcalc__intro,
.pbcalc__form,
.pbcalc__results {
  border: 1px solid var(--pbcalc-border);
  border-radius: 18px;
}

.pbcalc__intro {
  background: linear-gradient(135deg, #f1faf7 0%, #ffffff 75%);
  padding: 24px;
}

.pbcalc__intro p:last-child {
  font-size: 18px;
  line-height: 1.7;
  margin: 8px 0 0;
}

.pbcalc__eyebrow {
  color: var(--pbcalc-accent-dark);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}

.pbcalc__form {
  background: #fff;
  margin-top: 16px;
  padding: 24px;
}

.pbcalc__fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

.pbcalc__fieldset + .pbcalc__fieldset {
  border-top: 1px solid var(--pbcalc-border);
  margin-top: 28px;
  padding-top: 28px;
}

.pbcalc__fieldset legend {
  color: var(--pbcalc-ink);
  float: left;
  font-size: 19px;
  font-weight: 750;
  line-height: 1.4;
  margin: 0 0 18px;
  width: 100%;
}

.pbcalc__fieldset legend + * {
  clear: both;
}

.pbcalc__fieldset legend span {
  color: var(--pbcalc-muted);
  font-size: 14px;
  font-weight: 500;
}

.pbcalc__grid {
  display: grid;
  gap: 20px 18px;
}

.pbcalc__grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pbcalc__field {
  display: flex;
  flex-direction: column;
  font-size: 15px;
  font-weight: 700;
  gap: 8px;
  min-width: 0;
}

.pbcalc__field--half {
  max-width: calc(33.333% - 12px);
}

.pbcalc__field small {
  color: var(--pbcalc-muted);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.55;
}

.pbcalc__field input,
.pbcalc__field select {
  background: #fff;
  border: 1px solid #aab9b5;
  border-radius: 10px;
  color: var(--pbcalc-ink);
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  height: 48px;
  line-height: 1;
  margin: 0;
  min-width: 0;
  padding: 0 13px;
  width: 100%;
}

.pbcalc__field select {
  cursor: pointer;
}

.pbcalc__field input:focus,
.pbcalc__field select:focus,
.pbcalc__button:focus-visible,
.pbcalc__details summary:focus-visible {
  border-color: var(--pbcalc-accent);
  outline: 3px solid rgba(11, 117, 101, 0.22);
  outline-offset: 2px;
}

.pbcalc__control {
  align-items: center;
  display: flex;
  gap: 8px;
}

.pbcalc__control > span {
  color: var(--pbcalc-muted);
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 650;
}

.pbcalc__actions {
  align-items: center;
  border-top: 1px solid var(--pbcalc-border);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  padding-top: 24px;
}

.pbcalc__button {
  appearance: none;
  background: var(--pbcalc-accent);
  border: 1px solid var(--pbcalc-accent);
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  font-size: 16px;
  font-weight: 750;
  min-height: 48px;
  padding: 12px 18px;
}

.pbcalc__button:hover {
  background: var(--pbcalc-accent-dark);
  border-color: var(--pbcalc-accent-dark);
}

.pbcalc__button--secondary {
  background: #fff;
  border-color: #9aaba7;
  color: var(--pbcalc-ink);
}

.pbcalc__button--secondary:hover {
  background: var(--pbcalc-surface);
  border-color: #71827e;
}

.pbcalc__error {
  background: #fff1f0;
  border: 1px solid #d9665c;
  border-radius: 10px;
  color: #7b1d16;
  margin-bottom: 24px;
  padding: 16px 18px;
}

.pbcalc__error ul {
  margin: 8px 0 0 20px;
}

.pbcalc__results {
  background: #fff;
  box-shadow: 0 16px 42px rgba(21, 52, 45, 0.08);
  margin-top: 20px;
  padding: 28px;
}

.pbcalc__results:focus {
  outline: 3px solid rgba(11, 117, 101, 0.22);
  outline-offset: 3px;
}

.pbcalc__result-kicker {
  color: var(--pbcalc-muted);
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 4px;
}

.pbcalc__result-primary {
  align-items: baseline;
  color: var(--pbcalc-accent-dark);
  display: flex;
  gap: 6px;
  margin: 0;
}

.pbcalc__result-primary strong {
  font-size: clamp(38px, 7vw, 58px);
  letter-spacing: -0.055em;
  line-height: 1.15;
}

.pbcalc__result-primary span {
  font-size: 20px;
  font-weight: 750;
}

.pbcalc__result-summary {
  color: var(--pbcalc-muted);
  font-size: 15px;
  margin: 8px 0 22px;
}

.pbcalc__cards {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pbcalc__card {
  background: var(--pbcalc-surface);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
  padding: 16px;
}

.pbcalc__card span {
  color: var(--pbcalc-muted);
  font-size: 13px;
  line-height: 1.4;
}

.pbcalc__card strong {
  font-size: 18px;
  line-height: 1.35;
}

.pbcalc__tier-note {
  background: var(--pbcalc-accent-soft);
  border-radius: 12px;
  color: #174f46;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.65;
  margin-top: 14px;
  padding: 16px 18px;
}

.pbcalc__tier-note--warning {
  background: var(--pbcalc-warning-soft);
  color: var(--pbcalc-warning);
}

.pbcalc__tco {
  border-top: 1px solid var(--pbcalc-border);
  margin-top: 24px;
  padding-top: 24px;
}

.pbcalc__tco h3 {
  font-size: 19px;
  margin: 0 0 14px;
}

.pbcalc__tco-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pbcalc__tco-grid p {
  border: 1px solid var(--pbcalc-border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 14px 16px;
}

.pbcalc__tco-grid span {
  color: var(--pbcalc-muted);
  font-size: 13px;
}

.pbcalc__tco-grid strong {
  font-size: 18px;
}

.pbcalc__details {
  border-top: 1px solid var(--pbcalc-border);
  margin-top: 24px;
  padding-top: 20px;
}

.pbcalc__details summary {
  color: var(--pbcalc-accent-dark);
  cursor: pointer;
  font-size: 15px;
  font-weight: 750;
}

.pbcalc__table-wrap {
  margin-top: 16px;
  overflow-x: auto;
}

.pbcalc__breakdown table {
  border-collapse: collapse;
  font-size: 14px;
  margin: 0;
  min-width: 520px;
  width: 100%;
}

.pbcalc__breakdown caption {
  color: var(--pbcalc-muted);
  font-size: 13px;
  padding: 0 0 8px;
  text-align: left;
}

.pbcalc__breakdown th,
.pbcalc__breakdown td {
  border-bottom: 1px solid var(--pbcalc-border);
  padding: 10px 8px;
  text-align: right;
}

.pbcalc__breakdown th:first-child {
  text-align: left;
}

.pbcalc__notice {
  color: var(--pbcalc-muted);
  font-size: 13px;
  line-height: 1.65;
  margin: 14px 4px 0;
}

@media (max-width: 820px) {
  .pbcalc__grid--three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pbcalc__field--half {
    max-width: calc(50% - 9px);
  }

  .pbcalc__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .pbcalc {
    margin: 24px 0 32px;
  }

  .pbcalc__intro,
  .pbcalc__form,
  .pbcalc__results {
    border-radius: 14px;
  }

  .pbcalc__intro,
  .pbcalc__form,
  .pbcalc__results {
    padding: 19px;
  }

  .pbcalc__grid--three,
  .pbcalc__cards,
  .pbcalc__tco-grid {
    grid-template-columns: 1fr;
  }

  .pbcalc__field--half {
    max-width: none;
  }

  .pbcalc__actions,
  .pbcalc__button {
    width: 100%;
  }

  .pbcalc__button {
    min-height: 50px;
  }

  .pbcalc__result-primary strong {
    font-size: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pbcalc *,
  .pbcalc *::before,
  .pbcalc *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}