:root {
  --calculator-surface: #0b0e13;
  --calculator-surface-elevated: #10141b;
  --calculator-line: rgba(255, 255, 255, 0.12);
  --calculator-line-strong: rgba(255, 255, 255, 0.2);
  --calculator-text: #f4f7fa;
  --calculator-muted: #8f99a8;
  --calculator-cyan: #20d6e3;
  --calculator-green: #6ee7a8;
  --calculator-amber: #ffbd70;
  --calculator-danger: #ff8d82;
}

body {
  background: #05070a;
}

body::before {
  background: linear-gradient(180deg, rgba(32, 214, 227, 0.07) 0, rgba(5, 7, 10, 0) 420px);
}

body::after {
  display: none;
}

.calculator-page {
  min-height: calc(100vh - 88px);
  color: var(--calculator-text);
}

.calculator-hero {
  padding: 48px 0 24px;
}

.calculator-hero .container {
  width: min(1180px, calc(100% - 40px));
}

.calculator-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.72fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 36px;
}

.calculator-kicker,
.calculator-eyebrow,
.calculator-group-label {
  margin: 0;
  color: var(--calculator-muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: uppercase;
}

.calculator-kicker {
  grid-column: 1 / -1;
  margin-bottom: -28px;
  color: var(--calculator-cyan);
}

.calculator-intro h1 {
  margin: 0;
  max-width: 720px;
  color: var(--calculator-text);
  font-size: 58px;
  line-height: 0.98;
  letter-spacing: 0;
}

.calculator-intro > p:last-child {
  margin: 0 0 4px;
  max-width: 460px;
  color: #aab2bf;
  font-size: 18px;
  line-height: 1.55;
}

.calculator-shell {
  display: grid;
  grid-template-columns: minmax(360px, 0.8fr) minmax(500px, 1.2fr);
  overflow: hidden;
  border: 1px solid var(--calculator-line-strong);
  border-radius: 8px;
  background: var(--calculator-surface);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.42);
}

.calculator-form,
.calculator-result {
  min-width: 0;
  padding: 34px 36px 36px;
}

.calculator-form {
  border-right: 1px solid var(--calculator-line);
  background: #080b0f;
}

.calculator-form__header,
.calculator-result__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  min-height: 54px;
  margin-bottom: 28px;
}

.calculator-form h2,
.calculator-result h2 {
  margin: 5px 0 0;
  color: var(--calculator-text);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.calculator-reset {
  padding: 4px 0;
  border: 0;
  background: transparent;
  color: var(--calculator-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color 160ms ease;
}

.calculator-reset:hover,
.calculator-reset:focus-visible {
  color: var(--calculator-text);
}

.calculator-fields {
  display: grid;
}

.calculator-group-label {
  margin: 26px 0 4px;
  padding-top: 22px;
  border-top: 1px solid var(--calculator-line);
}

.calculator-group-label:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.calculator-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 0.82fr);
  align-items: center;
  gap: 20px;
  min-height: 62px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.calculator-field label {
  color: #c8ced7;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

.calculator-input {
  display: grid;
  grid-template-columns: minmax(54px, 1fr) auto;
  align-items: baseline;
  gap: 7px;
  min-width: 0;
}

.calculator-input input {
  width: 100%;
  min-width: 0;
  appearance: textfield;
  -moz-appearance: textfield;
  padding: 7px 0 6px;
  border: 0;
  border-bottom: 1px solid var(--calculator-line-strong);
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: var(--calculator-text);
  font: inherit;
  font-size: 17px;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  transition: border-color 160ms ease;
}

.calculator-input input::-webkit-inner-spin-button,
.calculator-input input::-webkit-outer-spin-button {
  margin: 0;
  -webkit-appearance: none;
}

.calculator-input input:focus {
  border-color: var(--calculator-cyan);
}

.calculator-input span {
  color: var(--calculator-muted);
  font-size: 12px;
  white-space: nowrap;
}

.calculator-result {
  background: var(--calculator-surface-elevated);
}

.calculator-scenario {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--calculator-line);
  border-radius: 4px;
  color: #c7cfd9;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}

.savings-highlight {
  position: relative;
  min-height: 185px;
  padding: 24px 26px 22px;
  overflow: hidden;
  border: 1px solid rgba(110, 231, 168, 0.35);
  border-radius: 6px;
  background: #0c1715;
}

.savings-highlight::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 7px;
  height: 100%;
  background: var(--calculator-green);
}

.savings-highlight > span {
  display: block;
  color: #aab5b4;
  font-size: 13px;
  font-weight: 600;
}

.savings-highlight > strong {
  display: block;
  min-height: 70px;
  margin-top: 4px;
  color: var(--calculator-green);
  font-size: 54px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  letter-spacing: 0;
}

.savings-highlight p {
  margin: 12px 0 0;
  color: #9fa9a8;
  font-size: 13px;
  line-height: 1.4;
}

.savings-highlight p b {
  color: #dce5e3;
  font-variant-numeric: tabular-nums;
}

.savings-highlight.is-negative {
  border-color: rgba(255, 141, 130, 0.38);
  background: #1a1011;
}

.savings-highlight.is-negative::after {
  background: var(--calculator-danger);
}

.savings-highlight.is-negative > strong {
  color: var(--calculator-danger);
}

.savings-highlight.is-neutral {
  border-color: var(--calculator-line-strong);
  background: #11151b;
}

.savings-highlight.is-neutral::after {
  background: var(--calculator-muted);
}

.savings-highlight.is-neutral > strong {
  color: var(--calculator-text);
}

.comparison-table {
  margin-top: 24px;
  border-top: 1px solid var(--calculator-line);
}

.comparison-table__row {
  display: grid;
  grid-template-columns: minmax(100px, 1fr) minmax(92px, 0.8fr) minmax(92px, 0.8fr);
  align-items: center;
  gap: 16px;
  min-height: 55px;
  border-bottom: 1px solid var(--calculator-line);
  color: #9ba5b3;
  font-size: 13px;
}

.comparison-table__row > :not(:first-child) {
  text-align: right;
}

.comparison-table__row strong {
  color: #eef2f6;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.comparison-table__head {
  min-height: 43px;
  color: #77818f;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.comparison-table__ai {
  color: var(--calculator-cyan) !important;
}

.comparison {
  display: grid;
  gap: 15px;
  margin-top: 24px;
}

.comparison-label {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 7px;
  color: #8e98a6;
  font-size: 12px;
}

.comparison-label span:last-child {
  color: #cbd2dc;
  font-variant-numeric: tabular-nums;
}

.comparison-track {
  width: 100%;
  height: 5px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.07);
}

.comparison-bar {
  display: block;
  width: 0;
  height: 100%;
  transition: width 220ms ease;
}

.comparison-bar--manual {
  background: var(--calculator-amber);
}

.comparison-bar--ai {
  background: var(--calculator-cyan);
}

.calculator-method {
  margin-top: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--calculator-line);
  border-bottom: 1px solid var(--calculator-line);
  color: var(--calculator-muted);
  font-size: 13px;
}

.calculator-method summary {
  width: fit-content;
  color: #cbd2dc;
  font-weight: 600;
  cursor: pointer;
}

.calculator-method p {
  max-width: 620px;
  margin: 12px 0 0;
  line-height: 1.55;
}

.calculator-actions {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 10px;
  margin-top: 24px;
}

.calculator-actions .btn {
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 5px;
  box-shadow: none;
  font-size: 14px;
}

.calculator-actions .btn--primary {
  background: var(--calculator-cyan);
  color: #031013;
}

.calculator-actions .btn--primary:hover {
  box-shadow: 0 12px 30px rgba(32, 214, 227, 0.18);
}

.calculator-actions .btn--ghost {
  border-color: var(--calculator-line-strong);
  color: #cbd2dc;
}

.calculator-actions .btn--ghost:hover {
  border-color: rgba(32, 214, 227, 0.45);
  background: rgba(32, 214, 227, 0.06);
  color: var(--calculator-text);
  box-shadow: none;
}

.share-status {
  min-height: 18px;
  margin: 10px 0 -8px;
  color: var(--calculator-green);
  font-size: 12px;
  text-align: center;
}

.calculator-page + .footer {
  margin-top: 44px;
}

@media (max-width: 980px) {
  .calculator-intro {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .calculator-kicker {
    margin-bottom: 4px;
  }

  .calculator-intro h1 {
    font-size: 50px;
  }

  .calculator-intro > p:last-child {
    max-width: 620px;
  }

  .calculator-shell {
    grid-template-columns: minmax(300px, 0.82fr) minmax(440px, 1.18fr);
  }

  .calculator-form,
  .calculator-result {
    padding-inline: 28px;
  }

  .calculator-field {
    grid-template-columns: 1fr;
    gap: 5px;
    min-height: 82px;
    padding: 12px 0;
  }
}

@media (max-width: 760px) {
  .header--app-static + main {
    padding-top: 72px;
  }

  .calculator-hero {
    padding-top: 36px;
  }

  .calculator-hero .container {
    width: min(640px, calc(100% - 24px));
  }

  .calculator-intro {
    margin-bottom: 26px;
  }

  .calculator-intro h1 {
    font-size: 42px;
    line-height: 1.02;
  }

  .calculator-intro > p:last-child {
    font-size: 16px;
  }

  .calculator-shell {
    grid-template-columns: 1fr;
  }

  .calculator-form {
    border-right: 0;
    border-bottom: 1px solid var(--calculator-line);
  }

  .calculator-field {
    grid-template-columns: minmax(0, 1fr) minmax(138px, 0.72fr);
    gap: 16px;
    min-height: 62px;
    padding: 0;
  }
}

@media (max-width: 520px) {
  .calculator-hero {
    padding-top: 28px;
  }

  .calculator-hero .container {
    width: min(480px, calc(100% - 20px));
  }

  .calculator-intro h1 {
    font-size: 36px;
  }

  .calculator-form,
  .calculator-result {
    padding: 26px 20px 28px;
  }

  .calculator-form__header,
  .calculator-result__header {
    margin-bottom: 22px;
  }

  .calculator-field {
    grid-template-columns: 1fr;
    gap: 4px;
    min-height: 80px;
    padding: 11px 0;
  }

  .calculator-input {
    grid-template-columns: minmax(64px, 1fr) auto;
  }

  .savings-highlight {
    min-height: 170px;
    padding: 21px 20px 19px;
  }

  .savings-highlight > strong {
    min-height: 57px;
    font-size: 42px;
  }

  .savings-highlight p {
    max-width: 250px;
  }

  .comparison-table__row {
    grid-template-columns: minmax(82px, 1fr) minmax(74px, 0.9fr) minmax(74px, 0.9fr);
    gap: 9px;
  }

  .comparison-table__row strong {
    font-size: 13px;
  }

  .calculator-actions {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
  }

  .footer__links {
    flex-direction: column;
    gap: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .comparison-bar,
  .calculator-actions .btn {
    transition: none;
  }
}