/* ==========================================================================
   CALCULATOR PAGE LAYOUT
   Shared by every calculator (mortgage, and future calculators).
   Calculator-specific input logic lives in each calculator's own calculator.js.
   ========================================================================== */

.calc-hero {
  padding: var(--space-6) 0 var(--space-8);
}

.calc-hero__title { max-width: 50ch; }
.calc-hero__intro {
  max-width: 62ch;
  font-size: var(--fs-md);
}

/* Workspace: inputs + results side by side on desktop, stacked on mobile */
.calc-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 860px) {
  .calc-workspace { grid-template-columns: 1fr; }
}

.calc-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.calc-panel--results {
  background: var(--color-surface-dark);
  color: var(--color-text-on-dark);
  position: sticky;
  top: calc(var(--header-height) + var(--space-5));
}

.calc-panel--results h2,
.calc-panel--results h3 { color: var(--color-text-on-dark); }

@media (max-width: 860px) {
  .calc-panel--results { position: static; }
}

.calc-panel__title {
  font-size: var(--fs-md);
  margin-bottom: var(--space-5);
}

/* Primary result — the number the user came for */
.result-primary {
  padding-bottom: var(--space-5);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid rgba(255,255,255,0.14);
}

.result-primary__label {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-on-dark-secondary);
  margin-bottom: var(--space-2);
}

.result-primary__value {
  font-family: var(--font-mono);
  font-size: var(--fs-4xl);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: #fff;
  line-height: 1.05;
}

.result-primary__sub {
  font-size: var(--fs-xs);
  color: var(--color-text-on-dark-secondary);
  margin-top: var(--space-2);
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.result-item__label {
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-on-dark-secondary);
  margin-bottom: var(--space-1);
}

.result-item__value {
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: #fff;
}

/* Visual breakdown bar (principal vs interest) — lightweight, no chart lib */
.breakdown {
  margin-top: var(--space-6);
}

.breakdown__bar {
  display: flex;
  width: 100%;
  height: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,0.1);
}

.breakdown__seg { height: 100%; }
.breakdown__seg--principal { background: var(--color-accent); }
.breakdown__seg--interest { background: rgba(255,255,255,0.32); }

.breakdown__legend {
  display: flex;
  gap: var(--space-5);
  margin-top: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--color-text-on-dark-secondary);
  flex-wrap: wrap;
}

.breakdown__legend span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.breakdown__dot {
  width: 9px; height: 9px; border-radius: 50%;
  display: inline-block;
}
.breakdown__dot--principal { background: var(--color-accent); }
.breakdown__dot--interest { background: rgba(255,255,255,0.55); }

/* Amortization mini chart drawn with plain CSS bars */
.amort-chart {
  margin-top: var(--space-6);
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 96px;
}

.amort-chart__bar {
  flex: 1;
  background: linear-gradient(to top, var(--color-accent) 0%, var(--color-accent) var(--split, 50%), rgba(255,255,255,0.3) var(--split, 50%), rgba(255,255,255,0.3) 100%);
  border-radius: 2px 2px 0 0;
  min-height: 4px;
}

.amort-chart__caption {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-2xs);
  color: var(--color-text-on-dark-secondary);
  margin-top: var(--space-2);
  font-family: var(--font-mono);
}

/* Range row (paired input + slider inside the form) */
.range-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.field__value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-primary);
  white-space: nowrap;
}

/* Assumptions / disclaimer note directly under the calculator */
.calc-note {
  display: flex;
  gap: var(--space-3);
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-5);
  font-size: var(--fs-xs);
  color: var(--color-primary-dark);
}

.calc-note svg { flex-shrink: 0; margin-top: 2px; }

/* --------------------------------------------------------------------------
   EDUCATIONAL CONTENT BELOW THE CALCULATOR
   -------------------------------------------------------------------------- */
.calc-content {
  max-width: var(--content-narrow);
  margin: 0 auto;
}

.calc-content h2 { margin-top: var(--space-9); }
.calc-content h2:first-child { margin-top: 0; }

.formula-box {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  overflow-x: auto;
  margin: var(--space-5) 0;
}

.example-box {
  border-left: 3px solid var(--color-accent);
  background: var(--color-accent-light);
  padding: var(--space-5);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-5) 0;
}

.example-box h4 { margin-bottom: var(--space-3); }
.example-box dl { display: grid; grid-template-columns: 1fr auto; gap: var(--space-2) var(--space-5); margin: 0; font-size: var(--fs-sm); }
.example-box dt { color: var(--color-text-secondary); }
.example-box dd { margin: 0; font-family: var(--font-mono); font-weight: 600; text-align: right; }

.factor-list {
  display: grid;
  gap: var(--space-4);
}

.factor-list__item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.factor-list__item:last-child { border-bottom: none; }

.factor-list__marker {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  width: 28px;
}

/* FAQ accordion */
.faq {
  border-top: 1px solid var(--color-border);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-5) 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: var(--space-4);
}

.faq-item__icon {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-primary);
}

.faq-item[open] .faq-item__icon { transform: rotate(45deg); }

.faq-item__a {
  padding: 0 0 var(--space-5);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  max-width: 62ch;
}

/* Related calculators */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

@media (max-width: 700px) {
  .related-grid { grid-template-columns: 1fr; }
}

/* Disclaimer strip */
.disclaimer-strip {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-top: var(--space-8);
}

/* --------------------------------------------------------------------------
   NATIVE SELECT — styled to match .input-group text inputs
   -------------------------------------------------------------------------- */
.native-select {
  border: none;
  background: transparent;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  font-family: var(--font-mono);
  color: var(--color-text);
  width: 100%;
  min-height: 48px;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%235B655F' stroke-width='1.4' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-8);
}

/* --------------------------------------------------------------------------
   UNIT TOGGLE — $ / % switch embedded inside an input-group
   -------------------------------------------------------------------------- */
.input-group--unit {
  padding-right: 4px;
}

.unit-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  background: var(--color-surface-alt);
  border-radius: calc(var(--radius-md) - 3px);
  padding: 3px;
  margin: 0 4px;
}

.unit-toggle__btn {
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: calc(var(--radius-md) - 5px);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  min-height: 30px;
}

.unit-toggle__btn.is-active {
  background: var(--color-primary);
  color: #fff;
}

.field__unit-hint {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: var(--fs-2xs);
  text-transform: none;
  letter-spacing: 0;
}

/* --------------------------------------------------------------------------
   CHECKBOX TOGGLE — "Include taxes & other costs"
   -------------------------------------------------------------------------- */
.toggle-row {
  margin: var(--space-2) 0 var(--space-5);
}

.checkbox-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}

.checkbox-toggle input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.checkbox-toggle__box {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 1.5px solid var(--color-border-strong);
  background: var(--color-surface);
  flex-shrink: 0;
  position: relative;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.checkbox-toggle__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.checkbox-toggle input:checked + .checkbox-toggle__box {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox-toggle input:checked + .checkbox-toggle__box::after {
  opacity: 1;
}

.checkbox-toggle input:focus-visible + .checkbox-toggle__box {
  box-shadow: var(--shadow-focus);
}

/* Optional cost fields — smoothly revealed under the checkbox */
.cost-fields {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.cost-fields.is-open {
  opacity: 1;
  transform: none;
}

.cost-fields[hidden] { display: none; }

/* --------------------------------------------------------------------------
   ADVANCED OPTIONS — collapsed <details> section
   -------------------------------------------------------------------------- */
.advanced-options {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-2);
  padding-top: var(--space-4);
}

.advanced-options__summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
}

.advanced-options__summary::-webkit-details-marker { display: none; }

.advanced-options__icon {
  color: var(--color-primary);
  transition: transform var(--transition-base);
  font-size: var(--fs-md);
}

.advanced-options[open] .advanced-options__icon { transform: rotate(45deg); }

.advanced-options__body {
  padding-top: var(--space-5);
}

.advanced-options__heading {
  font-size: var(--fs-sm);
  margin-bottom: var(--space-1);
}

/* --------------------------------------------------------------------------
   HOUSING COST BREAKDOWN / EXTRA PAYMENT IMPACT — line-item lists
   -------------------------------------------------------------------------- */
.housing-cost,
.extra-impact {
  border-top: 1px solid rgba(255,255,255,0.14);
  border-bottom: 1px solid rgba(255,255,255,0.14);
  padding: var(--space-5) 0;
  margin: var(--space-5) 0;
}

.housing-cost[hidden],
.extra-impact[hidden] { display: none; }

.housing-cost__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  font-size: var(--fs-sm);
  color: var(--color-text-on-dark-secondary);
}

.housing-cost__row .figure {
  color: #fff;
  font-weight: 600;
}

.housing-cost__row--total {
  border-top: 1px solid rgba(255,255,255,0.14);
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  font-weight: 600;
  color: #fff;
}

.housing-cost__row--total .figure {
  font-size: var(--fs-md);
}

/* --------------------------------------------------------------------------
   LOAN BALANCE CHART — lightweight inline SVG line chart
   -------------------------------------------------------------------------- */
.balance-chart {
  margin-top: var(--space-6);
}

#balance-chart-svg {
  width: 100%;
  height: 110px;
  margin-top: var(--space-3);
  overflow: visible;
}

/* --------------------------------------------------------------------------
   AMORTIZATION SCHEDULE TABLE
   -------------------------------------------------------------------------- */
.schedule-tabs {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.schedule-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  -webkit-overflow-scrolling: touch;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
  min-width: 620px;
}

.schedule-table th,
.schedule-table td {
  padding: var(--space-3) var(--space-4);
  text-align: right;
  white-space: nowrap;
  border-bottom: 1px solid var(--color-border);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.schedule-table th:first-child,
.schedule-table td:first-child,
.schedule-table th:nth-child(2),
.schedule-table td:nth-child(2) {
  text-align: left;
}

.schedule-table thead th {
  background: var(--color-surface-alt);
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
  position: sticky;
  top: 0;
}

.schedule-table tbody tr:last-child td {
  border-bottom: none;
}

.schedule-table tbody tr:hover {
  background: var(--color-surface-alt);
}

.schedule-table td.balance-zero {
  color: var(--color-primary);
  font-weight: 600;
}