/* ========== CSS VARIABLE FALLBACKS ========== */
.roi-calculator {
  /* Fonts */
  --main--main-font: Inter, Arial, sans-serif;
  --main--regular-weight: 400;
  --main--medium-weight: 500;

  /* Brand */
  --brand--purple-700: #503974;
  --brand--purple-600: #6b4c9a;

  /* Colors */
  --neutral--neutral-white: #fafafa;
  --neutral--neutral-dark: #1e1e1e;
  --neutral--neutral-200: #e5e5e5;
  --neutral--neutral-dark-5: #1e1e1e0d;
  --neutral--neutral-dark-10: #1e1e1e1a;
  --neutral--neutral-dark-25: #1e1e1e40;
  --neutral--neutral-dark-50: #1e1e1e80;
  --system--error: #f46b6b;

  /* Typography */
  --typography--text: 1rem;
  --typography--text-xs: .75rem;
  --typography--text-s: .875rem;
  --typography--text-l: 1.125rem;
  --typography--text-xl: 1.25rem;
  --typography--h3: 2rem;
  --typography--h4: 1.5rem;
  --typography--line-height: 1.2em;
  --typography--line-height-l: 1.4em;

  /* Spacing */
  --spacings--3xs: .25rem;
  --spacings--2xs: .5rem;
  --spacings--xs: .75rem;
  --spacings--s: .875rem;
  --spacings--m: 1rem;
  --spacings--l: 1.25rem;
  --spacings--xl: 1.5rem;
  --spacings--2xl: 2rem;
  --spacings--3xl: 3rem;

  /* Border */
  --border--radius-6: .375rem;
  --border--radius-8: .5rem;
  --border--radius-10: .625rem;
  --border--radius-12: .75rem;
  --border--radius-16: 1rem;

  /* Container */
  --container--main-size: 77rem;
}

/* ========== CONTAINER ========== */
.roi-calculator {
  font-family: var(--main--main-font);
  color: var(--neutral--neutral-dark);
  max-width: var(--container--main-size);
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacings--2xl);
  box-sizing: border-box;
}

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

/* ========== TOP SECTION (Grid: Inputs + Divider + Scenario + Dropdown) ========== */
.roi-calculator__top-section {
  display: grid;
  grid-template-columns: 1fr auto auto;
  column-gap: var(--spacings--xl);
  row-gap: var(--spacings--xl);
  align-items: end;
}

.roi-calculator__inputs {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  gap: var(--spacings--xl);
  min-width: 0;
}

.roi-calculator__divider {
  grid-column: 2;
  grid-row: 1;
  width: 1px;
  align-self: stretch;
  background-color: var(--neutral--neutral-200);
}

.roi-scenario {
  grid-column: 3;
  grid-row: 1;
}

.roi-asset {
  grid-column: 1;
  grid-row: 2;
}

/* ========== DATABOX ========== */
.roi-databox {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacings--2xs);
  min-width: 0;
}

.roi-databox__label {
  font-size: var(--typography--text-s);
  color: var(--neutral--neutral-dark);
  font-weight: var(--main--regular-weight);
  line-height: var(--typography--line-height-l);
  font-family: var(--main--main-font);
}

.roi-databox__value-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 2.5rem;
  width: 100%;
  border: 1px solid var(--neutral--neutral-200);
  border-radius: var(--border--radius-6);
  padding: 0 var(--spacings--xs);
  transition: border-color 0.2s ease;
}

.roi-databox__value-row:hover {
  border-color: var(--neutral--neutral-dark-25);
}

.roi-databox__value {
  font-size: var(--typography--text);
  font-weight: var(--main--regular-weight);
  color: var(--neutral--neutral-dark);
  line-height: var(--typography--line-height-l);
  text-align: center;
  white-space: nowrap;
  flex: 1;
  font-family: var(--main--main-font);
}

.roi-databox__btn {
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: var(--border--radius-8);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease, background-color 0.2s ease;
  padding: 0;
  color: var(--brand--purple-600);
  flex-shrink: 0;
}

.roi-databox__btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.roi-databox__btn:hover:not(:disabled) {
  background-color: var(--neutral--neutral-dark-5);
}

.roi-databox__btn:active:not(:disabled) {
  background-color: var(--neutral--neutral-dark-10);
}

/* ========== SCENARIO SELECTOR ========== */
.roi-scenario {
  display: flex;
  flex-direction: column;
  gap: var(--spacings--2xs);
  flex-shrink: 0;
}

.roi-scenario__label {
  font-size: var(--typography--text-s);
  font-weight: var(--main--regular-weight);
  color: var(--neutral--neutral-dark);
  display: flex;
  align-items: center;
  gap: var(--spacings--2xs);
  white-space: nowrap;
  font-family: var(--main--main-font);
}

.roi-scenario__info-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--neutral--neutral-dark-50);
  cursor: help;
  flex-shrink: 0;
}

.roi-scenario__info-icon svg {
  width: 1rem;
  height: 1rem;
}

/* Tooltip */
.roi-scenario__tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background-color: var(--neutral--neutral-dark);
  color: var(--neutral--neutral-white);
  font-size: var(--typography--text-s);
  font-weight: var(--main--regular-weight);
  font-style: normal;
  line-height: var(--typography--line-height-l);
  padding: var(--spacings--xs) var(--spacings--m);
  border-radius: var(--border--radius-8);
  white-space: pre-line;
  width: 280px;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 10;
  font-family: var(--main--main-font);
}

.roi-scenario__tooltip--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.roi-scenario__tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--neutral--neutral-dark);
}

.roi-scenario__pills {
  display: flex;
  gap: var(--spacings--2xs);
}

.roi-scenario__pill {
  height: 2.5rem;
  padding: 0 var(--spacings--xl);
  border-radius: var(--border--radius-10);
  border: none;
  font-family: var(--main--main-font);
  font-size: var(--typography--text-s);
  font-weight: var(--main--regular-weight);
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  background-color: var(--neutral--neutral-white);
  color: var(--neutral--neutral-dark);
  line-height: var(--typography--line-height-l);
  display: flex;
  align-items: center;
  justify-content: center;
}

.roi-scenario__pill:hover:not(.roi-scenario__pill--active) {
  background-color: var(--neutral--neutral-dark-5);
}

.roi-scenario__pill--active {
  background-color: var(--neutral--neutral-dark);
  color: var(--neutral--neutral-white);
  cursor: default;
}

/* ========== ASSET CLASS DROPDOWN ========== */
.roi-asset {
  display: flex;
  flex-direction: column;
  gap: var(--spacings--2xs);
}

.roi-asset__label {
  font-size: var(--typography--text-s);
  color: var(--neutral--neutral-dark);
  font-weight: var(--main--regular-weight);
  line-height: var(--typography--line-height-l);
  font-family: var(--main--main-font);
}

.roi-asset-dropdown__wrapper {
  position: relative;
  border: 1px solid transparent;
  border-radius: var(--border--radius-6);
  transition: border-color 0.2s ease;
  background-color: var(--neutral--neutral-white);
}

.roi-asset-dropdown__wrapper:hover:not(.roi-asset-dropdown__wrapper--open) {
  border-color: var(--neutral--neutral-dark-25);
}

.roi-asset-dropdown__wrapper--open,
.roi-asset-dropdown__wrapper--open:hover {
  border-color: var(--neutral--neutral-dark);
  border-bottom-color: transparent;
  border-radius: var(--border--radius-6) var(--border--radius-6) 0 0;
}

.roi-asset-dropdown {
  background: transparent;
  border-radius: var(--border--radius-6);
  height: 2.5rem;
  padding: 0 var(--spacings--m);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  border: none;
}

.roi-asset-dropdown--open {
  border-radius: var(--border--radius-6) var(--border--radius-6) 0 0;
}

.roi-asset-dropdown__value {
  font-size: var(--typography--text-s);
  color: var(--neutral--neutral-dark);
  font-weight: var(--main--regular-weight);
  line-height: var(--typography--line-height-l);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--main--main-font);
}

.roi-asset-dropdown__chevron {
  color: var(--neutral--neutral-dark);
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.roi-asset-dropdown--open .roi-asset-dropdown__chevron {
  transform: rotate(180deg);
}

.roi-asset-dropdown__panel {
  position: absolute;
  top: 100%;
  left: -1px;
  right: -1px;
  background-color: var(--neutral--neutral-white);
  border: 1px solid var(--neutral--neutral-dark);
  border-top: none;
  border-radius: 0 0 var(--border--radius-6) var(--border--radius-6);
  z-index: 20;
  animation: roi-dropdown-open 0.2s ease;
}

.roi-asset-dropdown__divider {
  height: 1px;
  background-color: var(--neutral--neutral-200);
  margin: 0 var(--spacings--m);
}

.roi-asset-dropdown__menu {
  overflow: hidden;
}

@keyframes roi-dropdown-open {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.roi-asset-dropdown__option {
  display: flex;
  align-items: center;
  padding: var(--spacings--2xs) var(--spacings--m);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.roi-asset-dropdown__option-name {
  font-size: var(--typography--text-s);
  color: var(--neutral--neutral-dark);
  font-weight: var(--main--regular-weight);
  line-height: var(--typography--line-height-l);
  font-family: var(--main--main-font);
}

.roi-asset-dropdown__option:hover {
  background-color: var(--neutral--neutral-dark-5);
}

.roi-asset-dropdown__option--active {
  background-color: var(--neutral--neutral-dark-10);
}

.roi-asset-dropdown__option--active .roi-asset-dropdown__option-name {
  font-weight: var(--main--medium-weight);
}

/* ========== CHART + RESULTS WRAPPER ========== */
.roi-chart-results {
  display: flex;
  align-items: center;
  gap: var(--spacings--2xl);
  background-color: var(--neutral--neutral-white);
  border-radius: var(--border--radius-16);
  padding: var(--spacings--xl) var(--spacings--m);
}

.roi-chart-results__divider {
  width: 1px;
  align-self: stretch;
  background-color: var(--neutral--neutral-200);
  flex-shrink: 0;
}

/* ========== CHART ========== */
.roi-chart {
  flex: 1;
  min-width: 0;
}

.roi-chart__canvas-wrapper {
  position: relative;
  height: 400px;
}

/* ========== RESULTS PANEL ========== */
.roi-results {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--spacings--xl);
  flex-shrink: 0;
  min-width: 220px;
}

.roi-results__item {
  display: flex;
  flex-direction: column;
  gap: var(--spacings--2xs);
  min-width: 0;
}

.roi-results__label {
  font-size: var(--typography--text);
  color: var(--neutral--neutral-dark-50);
  font-weight: var(--main--regular-weight);
  line-height: var(--typography--line-height-l);
  font-family: var(--main--main-font);
}

.roi-results__value {
  font-size: 2.25rem;
  line-height: 2.5rem;
  letter-spacing: 0.37px;
  color: var(--neutral--neutral-dark);
  font-weight: var(--main--regular-weight);
  font-family: var(--main--main-font);
}

.roi-results__value--negative {
  color: var(--system--error);
}

/* ========== DISCLAIMER ========== */
.roi-disclaimer {
  font-size: var(--typography--text-s);
  color: var(--neutral--neutral-dark);
  font-weight: var(--main--regular-weight);
  line-height: var(--typography--line-height-l);
  text-align: left;
  font-family: var(--main--main-font);
  margin: 0;
}

/* ========== RESPONSIVE: TABLET (≤991px) ========== */
@media (max-width: 991px) {
  .roi-calculator__top-section {
    grid-template-columns: 1fr;
  }

  .roi-calculator__inputs {
    grid-column: 1;
  }

  .roi-calculator__divider {
    display: none;
  }

  .roi-scenario {
    grid-column: 1;
    grid-row: 2;
    width: 100%;
    position: relative;
  }

  .roi-asset {
    grid-column: 1;
    grid-row: 3;
  }

  .roi-scenario__info-icon {
    position: static;
  }

  .roi-scenario__tooltip {
    position: absolute;
    left: 0;
    right: 0;
    bottom: calc(100% + 8px);
    width: auto;
    transform: translateY(4px);
    font-size: var(--typography--text-s);
    padding: var(--spacings--2xs) var(--spacings--xs);
    text-align: left;
  }

  .roi-scenario__tooltip--visible {
    transform: translateY(0);
  }

  .roi-scenario__tooltip::after {
    left: 5rem;
    transform: none;
  }

  .roi-chart-results {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacings--l);
  }

  .roi-chart-results__divider {
    width: 100%;
    height: 1px;
    align-self: auto;
  }

  .roi-results {
    flex-direction: row;
    gap: var(--spacings--xl);
    min-width: 0;
  }

  .roi-results__item {
    flex: 1 1 0;
  }

  .roi-results__value {
    font-size: var(--typography--h3);
    line-height: var(--typography--line-height);
  }
}

/* ========== RESPONSIVE: TABLET SMALL (≤768px) ========== */
@media (max-width: 768px) {
  .roi-calculator__inputs {
    flex-wrap: wrap;
    gap: var(--spacings--m);
  }

  .roi-databox {
    flex: 1 1 calc(50% - var(--spacings--m) / 2);
    min-width: 200px;
  }

  .roi-scenario__pills {
    flex-wrap: wrap;
  }

  .roi-results {
    flex-wrap: wrap;
    gap: var(--spacings--m);
  }

  .roi-results__item {
    flex: 1 1 calc(50% - var(--spacings--m) / 2);
    min-width: 140px;
  }
}

/* ========== RESPONSIVE: MOBILE (≤520px) ========== */
@media (max-width: 520px) {
  .roi-calculator {
    gap: var(--spacings--l);
  }

  /* -- Inputs: full width cards -- */
  .roi-calculator__inputs {
    flex-direction: column;
    gap: 0;
    background-color: var(--neutral--neutral-white);
    border-radius: var(--border--radius-16);
    padding: var(--spacings--xs) var(--spacings--m);
  }

  .roi-databox {
    flex: none;
    width: 100%;
    padding: var(--spacings--s) 0;
    gap: var(--spacings--xs);
    min-width: 0;
  }

  .roi-databox + .roi-databox {
    border-top: 1px solid var(--neutral--neutral-200);
  }

  .roi-databox__value-row {
    border: none;
    padding: 0;
    height: 2.5rem;
  }

  .roi-databox__value {
    font-size: var(--typography--text-xl);
  }

  .roi-databox__btn svg {
    width: 14px;
    height: 14px;
  }

  /* -- Scenario: compact row -- */
  .roi-scenario {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacings--xs);
  }

  .roi-scenario__pills {
    width: 100%;
    background-color: var(--neutral--neutral-white);
    border-radius: var(--border--radius-12);
    padding: var(--spacings--3xs);
    gap: var(--spacings--3xs);
  }

  .roi-scenario__pill {
    flex: 1;
    height: 2.25rem;
    padding: 0 var(--spacings--s);
    font-size: var(--typography--text-s);
    border-radius: var(--border--radius-8);
  }

  /* -- Chart + Results -- */
  .roi-chart-results {
    padding: var(--spacings--s) var(--spacings--xs);
    border-radius: var(--border--radius-12);
  }

  .roi-chart__canvas-wrapper {
    height: 260px;
  }

  /* -- Results: stacked rows -- */
  .roi-results {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    min-width: 0;
  }

  .roi-results__item {
    flex: none;
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--spacings--2xs);
    min-width: 0;
    padding: var(--spacings--s) var(--spacings--xs);
  }

  .roi-results__item + .roi-results__item {
    border-top: 1px solid var(--neutral--neutral-200);
  }

  .roi-results__label {
    font-size: var(--typography--text-s);
    line-height: var(--typography--line-height-l);
    flex-shrink: 0;
  }

  .roi-results__value {
    font-size: var(--typography--text-l);
    line-height: var(--typography--line-height);
    letter-spacing: 0;
    text-align: right;
    white-space: nowrap;
  }

  .roi-disclaimer {
    font-size: var(--typography--text-xs);
  }

  .roi-scenario__tooltip {
    font-size: var(--typography--text-xs);
  }
}

/* ========== RESPONSIVE: SMALL MOBILE (≤360px) ========== */
@media (max-width: 360px) {
  .roi-chart__canvas-wrapper {
    height: 220px;
  }

  .roi-results__value {
    font-size: var(--typography--text);
  }
}