.calculator-page {
  background: var(--paper);
}

.calculator-hero {
  padding: clamp(18px, 3vw, 36px) clamp(16px, 5vw, 56px) clamp(14px, 2.5vw, 24px);
  background: linear-gradient(135deg, #ffffff 0%, #eef5ff 100%);
  border-bottom: 1px solid var(--line);
}

.calculator-hero h1 {
  max-width: 820px;
  margin-bottom: 8px;
  font-size: clamp(1.85rem, 4vw, 3.2rem);
}

.calculator-hero p:not(.eyebrow) {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
}

.calculator-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.48fr);
  gap: 18px;
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 40px) clamp(16px, 5vw, 36px);
}

.calculator-card,
.calculator-result,
.calculator-note {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 16px 42px rgba(18, 32, 55, 0.08);
}

.calculator-card {
  padding: clamp(16px, 3vw, 28px);
}

.calculator-card h2,
.calculator-result h2,
.calculator-note h2 {
  margin-bottom: 14px;
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  line-height: 1.15;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field,
.field-full {
  display: grid;
  gap: 5px;
}

.field-section-title {
  margin-top: 4px;
  padding-top: 4px;
  color: var(--blue-dark);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.featured-field {
  padding: 12px;
  border: 1px solid #b8c3d3;
  border-radius: var(--radius);
  background: #f8fbff;
}

.method-field {
  margin: 0;
  padding: 0;
  border: 0;
}

.field-full {
  grid-column: 1 / -1;
}

.field label,
.field-full label,
.field legend {
  color: var(--ink);
  font-weight: 800;
}

.radio-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.radio-card {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid #b8c3d3;
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
}

.calculator-card .radio-card input {
  width: auto;
  min-height: 0;
  padding: 0;
  margin: 0;
}

.radio-card:has(input:checked) {
  border-color: var(--blue);
  background: #eef4ff;
}

.input-unit-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(118px, 0.34fr);
  gap: 8px;
}

.unit-slot {
  display: block;
}

.settings-details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
  overflow: hidden;
}

.settings-details summary {
  padding: 12px 14px;
  color: var(--blue-dark);
  font-weight: 900;
  cursor: pointer;
}

.settings-details summary:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  outline-offset: -3px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0 14px 14px;
}

.opening-pair {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid #d8e2f2;
  border-radius: var(--radius);
  background: #fff;
}

.opening-pair h3 {
  margin: 0;
  color: var(--blue-dark);
  font-size: 0.98rem;
  line-height: 1.2;
}

.field small,
.field-full small {
  color: var(--muted);
}

.calculator-card input,
.calculator-card select {
  width: 100%;
  min-height: 44px;
  padding: 8px 11px;
  border: 1px solid #b8c3d3;
  border-radius: var(--radius);
  color: var(--ink);
  background: #fff;
  font: inherit;
}

.calculator-card input:focus,
.calculator-card select:focus {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  border-color: var(--blue);
}

.calculator-card input.is-invalid,
.calculator-card select.is-invalid,
.radio-card.is-invalid {
  border-color: #c2410c;
  background: #fff7ed;
}

.calculator-card input.is-invalid:focus,
.calculator-card select.is-invalid:focus {
  outline-color: rgba(194, 65, 12, 0.22);
  border-color: #c2410c;
}

.field-error-text {
  color: #9a3412;
  font-size: 0.9rem;
  font-weight: 800;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.button-primary,
.button-secondary {
  min-height: 44px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.button-primary {
  color: #fff;
  background: var(--blue);
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  color: var(--blue-dark);
  background: #f7faff;
  border-color: #d8e2f2;
  font-weight: 800;
}

.calculator-message {
  display: none;
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: var(--radius);
  font-weight: 800;
}

.calculator-message.is-error {
  display: block;
  color: #861b1b;
  background: #fff1f1;
  border: 1px solid #ffc9c9;
}

.calculator-message:not(:empty):not(.is-error) {
  display: block;
  color: #14532d;
  background: #ecfdf3;
  border: 1px solid #bbf7d0;
}

.calculator-result {
  position: sticky;
  top: 96px;
  padding: clamp(16px, 3vw, 24px);
}

.calculator-result[hidden],
[data-result-action][hidden],
[hidden] {
  display: none !important;
}

.result-placeholder {
  color: var(--muted);
}

.result-value {
  margin: 12px 0;
  color: var(--blue-dark);
  font-size: clamp(2rem, 5vw, 3.3rem);
  font-weight: 900;
  line-height: 1;
}

.result-detail {
  color: var(--muted);
}

.result-list {
  display: grid;
  gap: 10px;
  margin: 12px 0 0;
}

.result-item {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
}

.result-item strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

.result-item span {
  color: var(--blue-dark);
  font-size: 1.35rem;
  font-weight: 900;
}

.result-item small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.poverty-status {
  margin: 12px 0;
  padding: 14px;
  border: 1px solid #d8e2f2;
  border-radius: var(--radius);
  background: #f8fbff;
}

.poverty-status-label {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.poverty-status strong {
  display: block;
  color: var(--blue-dark);
  font-size: clamp(1.25rem, 4vw, 1.65rem);
  line-height: 1.12;
}

.poverty-difference,
.poverty-progress-note {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-weight: 800;
}

.poverty-progress {
  position: relative;
  height: 10px;
  margin-top: 12px;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
}

.poverty-progress-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}

.poverty-progress-marker {
  position: absolute;
  top: -3px;
  left: 50%;
  width: 2px;
  height: 16px;
  background: #334155;
}

.poverty-progress-note {
  color: var(--muted);
  font-size: 0.95rem;
}

.poverty-status-below {
  border-color: #fed7aa;
  background: #fff7ed;
}

.poverty-status-below .poverty-progress-fill {
  background: #c2410c;
}

.poverty-status-at {
  border-color: #bbf7d0;
  background: #f0fdf4;
}

.poverty-status-at .poverty-progress-fill {
  background: #16a34a;
}

.material-result-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.material-result-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
}

.material-result-card h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.2;
}

.material-primary {
  margin: 0;
  color: var(--blue-dark);
  font-weight: 900;
  line-height: 1.05;
}

.material-primary strong {
  font-size: clamp(1.65rem, 7vw, 2.35rem);
}

.material-conversions {
  margin-top: 10px;
  border-top: 1px solid #d8e2f2;
}

.material-conversions summary {
  padding-top: 9px;
  color: var(--blue-dark);
  font-weight: 900;
  cursor: pointer;
}

.material-conversions summary:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  outline-offset: 2px;
}

.material-conversions ul {
  display: grid;
  gap: 6px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.material-conversions li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-top: 1px solid #edf2f8;
  color: var(--muted);
}

.material-conversions li:first-child {
  border-top: 0;
}

.material-conversions li strong {
  color: var(--ink);
  text-align: right;
}

.calculator-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(16px, 5vw, 36px) clamp(32px, 5vw, 56px);
}

.calculator-note {
  padding: 0;
  overflow: hidden;
}

.calculator-note summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 900;
  cursor: pointer;
}

.calculator-note summary::after {
  content: "+";
  color: var(--blue-dark);
  font-size: 1.2rem;
}

.calculator-note[open] summary::after {
  content: "-";
}

.calculator-note summary:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  outline-offset: -3px;
}

.calculator-note > *:not(summary) {
  padding: 0 16px 16px;
}

.calculator-note ul {
  margin: 0;
  padding-left: 20px;
}

.calculator-note li + li {
  margin-top: 8px;
}

@media (max-width: 860px) {
  .calculator-shell,
  .calculator-notes {
    grid-template-columns: 1fr;
  }

  .calculator-result {
    position: static;
  }
}

@media (max-width: 620px) {
  .calculator-hero {
    padding: 10px 16px;
  }

  .calculator-hero .eyebrow {
    margin-bottom: 6px;
    font-size: 0.72rem;
  }

  .calculator-hero h1 {
    margin-bottom: 6px;
    font-size: clamp(1.45rem, 7.5vw, 1.85rem);
    line-height: 1.04;
  }

  .calculator-hero p:not(.eyebrow) {
    font-size: 0.95rem;
    line-height: 1.35;
  }

  .calculator-shell {
    gap: 14px;
    padding: 14px 12px 18px;
  }

  .calculator-card {
    padding: 14px;
  }

  .calculator-card h2,
  .calculator-result h2 {
    margin-bottom: 10px;
  }

  .field-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .radio-group,
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .input-unit-row {
    grid-template-columns: minmax(0, 1fr) minmax(104px, 0.45fr);
  }

  .form-actions {
    display: flex;
    align-items: center;
  }

  .button-primary {
    flex: 1 1 100%;
  }

  .button-secondary {
    flex: 1 1 auto;
    min-height: 40px;
    padding: 8px 12px;
    font-size: 0.92rem;
  }

  .calculator-notes {
    gap: 10px;
    padding: 0 12px 28px;
  }

  .calculator-note summary {
    padding: 12px 14px;
  }
}

@media print {
  .site-header,
  .site-footer,
  .form-actions,
  .calculator-message,
  .nav-toggle {
    display: none !important;
  }

  .calculator-hero,
  .calculator-shell,
  .calculator-notes {
    display: block;
    padding: 0;
  }

  .calculator-card,
  .calculator-result,
  .calculator-note {
    margin: 0 0 18px;
    border: 1px solid #999;
    box-shadow: none;
  }

  body {
    background: #fff;
  }
}