:root {
  --ink: #011827;
  --paper: #F2F3F4;
  --surface: #FFFFFF;
  --mid: #626F79;
  --placeholder: #44545F;
  --border-rest: #DADDDF;
  --border-focus: #0688D9;
  --accent: #0676C5;
  --accent-dim: rgba(6, 118, 197, .10);

  --ff-display: 'Merriweather', Georgia, serif;
  --ff-body: 'Manrope', sans-serif;
  --tracking-display: -0.03em;
  --tracking-body: -0.02em;

  --text-xs: 1.125rem;
  --text-sm: 1.125rem;
  --text-base: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-result: 2.75rem;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-bold: 700;

  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 40px;
  --sp-6: 48px;

  --border-width-rest: 1px;
  --border-width-focus: 2px;

  --radius-card: 24px;
  --radius-input: 12px;
  --radius-pill: 999px;

  --shadow-card: none;
  --trans: 180ms ease;
  --card-padding: clamp(32px, 3vw, 40px);

  --chart-1: #0676C5;
  --chart-2: #4AABF0;
  --chart-3: #626F79;
  --chart-4: #A8BFC9;
  --chart-5: #011827;
  --chart-positive: #2DB87A;
  --chart-negative: #E05C3A;
  --chart-grid: #DADDDF;
  --chart-label: #626F79;
  --scenario-a: #0676C5;
  --scenario-b: #B1007C;
  --gap: 1rem;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-body);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
}

.container {
  width: 100%;
  max-width: 1500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem 1rem 1rem;
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(0.875rem, 2vw, 1.5rem);
  align-items: stretch;
  width: 100%;
  min-width: 0;
}

.calculator-left {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border-rest);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
  min-width: 0;
}

.calculator-left .inputs-card {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.calculator-left .scenario-tabs {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.calculator-left .scenario-tab-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.calculator-left .scenario-col {
  flex: 1;
  align-content: space-evenly;
}

.calculator-left .btn-row {
  margin-top: auto;
}

.scenario-tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-rest);
  margin-bottom: var(--sp-3);
}

.scenario-tab {
  all: unset;
  cursor: pointer;
  flex: 1;
  text-align: center;
  padding: var(--sp-1) var(--sp-3);
  font-family: var(--ff-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--mid);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--trans), border-color var(--trans);
}

.scenario-tab:hover {
  color: var(--ink);
}

.scenario-tab.active[data-tab="a"] {
  color: var(--scenario-a);
  border-bottom-color: var(--scenario-a);
}

.scenario-tab.active[data-tab="b"] {
  color: var(--scenario-b);
  border-bottom-color: var(--scenario-b);
}

.scenario-tab-panel[hidden] {
  display: none !important;
}

.calculator-right {
  background: #0a1628;
  border-radius: var(--radius-card);
  padding: var(--card-padding);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

.calculator-right .chart-section {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.headline-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.75rem, 1.25vw, 1rem);
}

.scenario-col-result {
  min-width: 0;
}

.scenario-col-result dl {
  margin: 0;
}

.scenario-results-heading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--paper);
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
}

.scenario-results-heading .scenario-a-label,
.scenario-results-heading .scenario-b-label {
  color: var(--paper);
}

.scenario-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.scenario-dot--a { background-color: var(--scenario-a); }
.scenario-dot--b { background-color: var(--scenario-b); }

.scenario-col-result:nth-child(2) {
  border-left: 1px solid rgba(242, 243, 244, 0.15);
  padding-left: clamp(0.875rem, 1.5vw, 1.5rem);
}

.calculator-right .chart-label {
  color: rgba(242, 243, 244, 0.7);
}

#results[hidden] {
  display: none !important;
}

.expand-btn-wrap {
  display: flex;
  justify-content: center;
  padding: 0;
  grid-column: 1 / -1;
}

.expand-btn {
  max-width: 320px;
  margin-top: 0;
}

.page-header {
  margin-bottom: 0;
  border-bottom: 1px solid var(--border-rest);
  padding-bottom: var(--sp-3);
}

.page-title {
  margin: 0;
  font-family: var(--ff-display);
  font-size: clamp(2rem, 3vw, 2.75rem);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
  line-height: 1.15;
}

.page-subtitle {
  margin: var(--sp-1) 0 0;
  color: var(--mid);
  font-size: clamp(1rem, 0.95rem + 0.2vw, var(--text-sm));
  font-weight: var(--weight-light);
  max-width: 34ch;
  text-wrap: pretty;
}

.calculator-right .metric {
  border-top: none;
  padding: 0.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.calculator-right .metric:first-child {
  padding-top: 0;
}

.calculator-right .metric-label {
  font-size: 0.8125rem;
  font-weight: var(--weight-medium);
  color: rgba(242, 243, 244, 0.55);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.calculator-right .metric-value {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 1.5rem + 1.5vw, 2.5rem);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
  color: var(--paper);
  line-height: 1.05;
  text-wrap: balance;
}

.calculator-right .metric-sub {
  font-family: var(--ff-body);
  font-size: clamp(1rem, 0.9rem + 0.55vw, var(--text-xl));
  font-weight: var(--weight-medium);
  color: var(--paper);
  line-height: 1.35;
  text-wrap: pretty;
}

.calculator-right .metric-value.pre-run-copy,
.calculator-right .metric-sub.pre-run-copy {
  font-family: var(--ff-body);
  font-size: 0.875rem;
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-body);
  color: rgba(242, 243, 244, 0.38);
  height: auto;
  align-items: flex-start;
}

.disclaimer {
  margin-bottom: 0;
}

.disclaimer-box {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--accent-dim);
  border-radius: var(--radius-card);
  padding: 1.25rem 1.5rem;
  color: var(--accent);
}

.disclaimer-icon {
  flex-shrink: 0;
  margin-top: 0.15rem;
  width: 20px;
  height: 20px;
}

.disclaimer-box p {
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  line-height: 1.6;
  margin: 0;
  text-wrap: pretty;
}

.disclaimer-box strong {
  font-weight: var(--weight-medium);
}

.card {
  background: var(--paper);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
}

.card-header {
  border-bottom: 1px solid var(--border-rest);
  padding-bottom: var(--sp-2);
}

.card-header h2 {
  margin: 0;
  font-family: var(--ff-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
}

.card-header p {
  margin: var(--sp-1) 0 0;
  color: var(--mid);
  font-size: var(--text-sm);
  font-weight: var(--weight-light);
}

.card-body {
  padding-top: var(--sp-3);
}

.scenario-grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.scenario-header-wrap {
  grid-column: 1 / -1;
  margin-bottom: -16px; /* Offset the grid gap slightly for a tighter feel */
}

.scenario-header-wrap h3 {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.scenario-a-label {
  color: var(--scenario-a);
}

.scenario-b-label {
  color: var(--scenario-b);
}

.scenario-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.1fr);
  gap: var(--sp-2) clamp(0.875rem, 1.5vw, var(--sp-3));
}

.scenario-col:first-child {
  border-bottom: 1px solid var(--border-rest);
  padding-bottom: var(--sp-3);
}

.field {
  display: grid;
  grid-template-rows: minmax(3.2em, auto) auto minmax(20px, auto);
  align-content: start;
  gap: var(--sp-1);
}

.field-label {
  color: var(--mid);
  font-size: clamp(1rem, 0.95rem + 0.2vw, var(--text-sm));
  font-weight: var(--weight-medium);
  line-height: 1.35;
  text-wrap: pretty;
}

.input-box {
  background: var(--surface);
  border: 1px solid var(--border-rest);
  border-radius: var(--radius-input);
  display: flex;
  align-items: center;
  padding: 0 12px;
  transition: border-color var(--trans);
}

.input-box:focus-within {
  border: 1px solid var(--border-focus);
  outline: 2px solid rgba(6, 136, 217, .15);
  outline-offset: 2px;
}

.input-box:has(.field-input[aria-invalid="true"]) {
  border: 2px solid #E05C3A;
  outline: none;
}

.affix {
  color: var(--mid);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  user-select: none;
}

.field-input,
.field-select {
  width: 100%;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: clamp(1rem, 0.95rem + 0.2vw, var(--text-base));
  font-weight: var(--weight-medium);
  padding: 14px 10px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: textfield;
}

.field-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='10' viewBox='0 0 14 10'%3E%3Cpath d='M1 1l6 7 6-7' fill='none' stroke='%23626F79' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 30px;
}

.field-input:focus,
.field-select:focus {
  outline: none;
}

.field-input::placeholder {
  color: var(--placeholder);
  font-weight: var(--weight-regular);
}

.field-error {
  min-height: 20px;
  color: #E05C3A;
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
}

.field-error.warning {
  color: var(--mid);
}

.meric-source {
  margin: var(--sp-1) 0 var(--sp-4);
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
}

.compliance-note {
  margin: var(--sp-2) 0 0;
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
}

button {
  margin-top: var(--sp-2);
  width: 100%;
  border-radius: var(--radius-pill);
  font-family: var(--ff-body);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  padding: 14px 24px;
  cursor: pointer;
  transition: transform var(--trans), box-shadow var(--trans), background var(--trans);
}

button:active {
  transform: scale(0.985);
}

.run-btn {
  background: var(--ink);
  color: var(--surface);
  border: 2px solid var(--ink);
}

.run-btn:hover {
  background: #00131F;
  box-shadow: 0 8px 18px rgba(1, 24, 39, 0.12);
}

.outline-btn {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.outline-btn:hover {
  background: var(--accent-dim);
}

.btn-row {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.btn-row button {
  margin-top: 0;
  flex: 1 1 180px;
}

.results-wrap {
  margin-top: 0;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.output-panel {
  animation: fadeUp 220ms ease;
}

.results-content {
  animation: fadeUp 220ms ease;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.output-label {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.headline-card,
.comparison-card {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
}

.headline-card h3,
.comparison-card h3,
.milestone-section h3,
.detail-title,
.assumptions-head h3 {
  margin: 0;
  font-family: var(--ff-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
}

.headline-card .scenario-a-label,
.headline-card .scenario-b-label {
  color: var(--paper);
}

.comparison-card {
  margin-top: var(--sp-2);
}

.metric {
  border-top: 1px solid rgba(242, 243, 244, .08);
  padding: var(--sp-1) 0;
}

.metric-label {
  margin: 0;
  color: rgba(242, 243, 244, .55);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
}

.metric-value {
  margin: 4px 0 0;
  font-family: var(--ff-display);
  font-size: var(--text-result);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
}

.metric-sub {
  margin: 4px 0 0;
  color: var(--paper);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
}

.metric-value.pre-run-copy,
.metric-sub.pre-run-copy,
.summary-text.pre-run-copy {
  font-family: var(--ff-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
  letter-spacing: var(--tracking-body);
  color: rgba(242, 243, 244, 0.72);
}

.risk-pill {
  display: inline-block;
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
}

.risk-green {
  background: rgba(45, 184, 122, 0.2);
  color: #A7F1CE;
}

.risk-amber {
  background: rgba(247, 177, 52, 0.22);
  color: #FFE2A6;
}

.risk-red {
  background: rgba(224, 92, 58, 0.22);
  color: #FFBBB0;
}

.summary-text {
  margin: var(--sp-2) 0 0;
  font-size: var(--text-sm);
  color: var(--paper);
}

.chart-section {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.chart-label {
  margin: 0 0 var(--sp-2);
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
}

.chart-wrap {
  position: relative;
  height: clamp(280px, 32vw, 340px);
}

.detail-section {
  margin-top: var(--sp-3);
}

.detail-section:first-child {
  margin-top: 0;
}

.detail-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  cursor: pointer;
}

.detail-summary::-webkit-details-marker {
  display: none;
}

.detail-summary:focus-visible {
  outline: 2px solid rgba(6, 136, 217, .35);
  outline-offset: 4px;
  border-radius: 6px;
}

.detail-chevron {
  width: 0.65rem;
  height: 0.65rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--trans);
  flex-shrink: 0;
  margin-right: 4px;
}

.detail-section[open] .detail-chevron {
  transform: rotate(225deg);
}

.detail-content {
  padding-top: var(--sp-2);
}

.milestone-section,
.narrative-section {
  margin-top: var(--sp-3);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  margin-top: var(--sp-2);
}

th,
td {
  text-align: left;
  border-bottom: 1px solid var(--border-rest);
  padding: 12px 10px;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--ink);
}

th {
  color: var(--mid);
}

.pre-run-cell {
  color: var(--mid);
  font-weight: var(--weight-light);
}

.narrative-section p {
  margin-top: var(--sp-2);
  color: var(--ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
}

.narrative-section .detail-content p:first-child {
  margin-top: 0;
}

.narrative-section p:empty {
  display: none;
}

.results-main {
  width: 100%;
  min-width: 0;
}

.results-content .results-main {
  display: flex;
  flex-direction: column;
}

.assumptions-panel {
  width: 100%;
  max-width: none;
  border-top: 1px solid var(--border-rest);
  padding-top: var(--sp-3);
  border-left: none;
  padding-left: 0;
  margin-left: 0;
}

.assumptions-head p {
  margin: 0;
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
}

.assumption-list {
  margin-top: var(--sp-2);
  display: grid;
  gap: var(--sp-2);
}

.assumption-row {
  border-top: 1px solid var(--border-rest);
  padding-top: var(--sp-2);
}

.assumption-name {
  margin: 0;
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
}

.assumption-value {
  margin: 6px 0;
  color: var(--ink);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
}

.assumption-explain {
  margin: 0;
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
}

.high-return {
  margin-top: var(--sp-2);
  background: #FFF4CC;
  color: #886a00;
  border: 1px solid #d7bf68;
  border-radius: 10px;
  padding: 12px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
}

.assumption-disclaimer {
  margin-top: var(--sp-2);
  color: var(--mid);
  font-size: var(--text-xs);
  font-weight: var(--weight-light);
  border-top: 1px solid var(--border-rest);
  padding-top: var(--sp-2);
}

.mobile-only {
  display: none;
}

button:focus-visible,
.field-input:focus-visible,
.field-select:focus-visible {
  outline: 2px solid rgba(6, 136, 217, .35);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
  .mobile-only {
    display: block;
  }

  .container {
    padding: 1.25rem 0.875rem 1rem;
  }

  .calculator-layout {
    grid-template-columns: minmax(0, 0.97fr) minmax(0, 1.03fr);
  }

  .scenario-col {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 16px;
  }

  .scenario-tab {
    padding: var(--sp-1) var(--sp-2);
    font-size: 1rem;
  }

  .field-input,
  .field-select {
    padding: 12px 8px;
  }

  .chart-wrap {
    height: 300px;
  }

  .assumptions-panel {
    margin-top: 0;
  }
}

@media (max-width: 860px) {
  .calculator-layout {
    grid-template-columns: 1fr;
    gap: var(--sp-2);
  }

  .metric-value {
    font-size: clamp(1.6rem, 5.5vw, var(--text-result));
  }

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

  .chart-wrap {
    height: 320px;
  }
}

@media (max-width: 760px) {
  table {
    min-width: 0;
  }

  .table-wrap {
    overflow: visible;
  }

  table,
  thead,
  tbody,
  tr,
  th,
  td {
    display: block;
    width: 100%;
  }

  thead {
    display: none;
  }

  tbody {
    display: grid;
    gap: var(--sp-2);
  }

  tr {
    background: var(--paper);
    border: 1px solid var(--border-rest);
    border-radius: var(--radius-input);
    padding: 10px 12px;
  }

  td {
    border-bottom: none;
    padding: 6px 0;
    color: var(--ink);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
  }

  td::before {
    content: attr(data-label);
    display: block;
    color: var(--mid);
    font-weight: var(--weight-light);
    margin-bottom: 2px;
  }

  .pre-run-cell::before {
    content: none;
  }
}

@media (max-width: 680px) {
  :root {
    --card-padding: 16px;
    --radius-card: 16px;
  }

  body {
    padding: 12px 0;
    background: var(--surface);
  }

  .container {
    border-left: none;
    border-right: none;
    border-radius: 0;
  }

  .scenario-col {
    grid-template-columns: 1fr;
  }

  .headline-grid {
    grid-template-columns: 1fr;
  }

  .scenario-col-result:nth-child(2) {
    border-left: none;
    border-top: 1px solid rgba(242, 243, 244, 0.15);
    padding-left: 0;
    padding-top: var(--sp-2);
  }

  .chart-wrap {
    height: 240px;
  }

  .disclaimer-box {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-card);
  }

}

@media (max-width: 480px) {
  :root {
    --card-padding: 16px;
  }

  .chart-wrap {
    height: 200px;
  }

  .btn-row {
    flex-direction: column;
  }

  .btn-row button {
    flex: none;
    width: 100%;
  }

  .headline-card,
  .comparison-card {
    padding: var(--card-padding);
  }
}