.break-even-page {
  min-height: 100vh;
}

.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 2rem 5% 3rem;
}

.break-even-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 1.5rem;
  align-items: start;
}

.break-even-content {
  min-width: 0;
}

.break-even-page #inputs,
.break-even-page #results,
.break-even-page #chart-section,
.break-even-page #about-break-even,
.break-even-page #how-to-use,
.break-even-page #methodology,
.break-even-page #strategies,
.break-even-page #faq {
  scroll-margin-top: 6rem;
}

.break-even-side-nav {
  position: sticky;
  top: 6rem;
  padding: 1rem;
}

.break-even-side-nav h2 {
  margin-bottom: 1rem;
}

.break-even-side-nav nav {
  display: grid;
  gap: .45rem;
}

.break-even-side-nav a {
  min-height: 2.35rem;
  display: flex;
  align-items: center;
  padding: .48rem .7rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  font-size: .88rem;
  font-weight: 720;
  text-decoration: none;
}

.break-even-side-nav a:hover,
.break-even-side-nav a:focus {
  color: var(--blue-600);
  border-color: rgba(31, 111, 235, .28);
  background: #fff;
}

.section-header,
.results-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-header h2,
.results-header h2 {
  margin: 0 0 .25rem;
}

.section-header p {
  margin: 0;
  color: var(--text-secondary);
}

.editor-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .6rem;
}

.privacy-note {
  margin-bottom: 1rem;
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.input-grid label {
  display: grid;
  gap: .4rem;
  color: var(--navy-950);
  font-size: .92rem;
  font-weight: 760;
}

.input-grid input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .6rem .7rem;
  background: #fff;
  color: var(--text-primary);
}

.actions {
  justify-content: flex-start;
  margin-top: 1rem;
}

.cost-guidance-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.cost-guidance-grid article {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.cost-guidance-grid h3 {
  margin: 0 0 .5rem;
  color: var(--navy-950);
  font-size: 1rem;
}

.cost-guidance-grid p {
  margin: 0;
  color: var(--text-secondary);
  font-size: .92rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.summary-grid article {
  min-height: 112px;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.summary-grid span {
  display: block;
  margin-bottom: .6rem;
  color: var(--text-secondary);
  font-size: .78rem;
  font-weight: 820;
  text-transform: uppercase;
}

.summary-grid strong {
  color: var(--navy-950);
  font-size: clamp(1.35rem, 2vw, 1.85rem);
  line-height: 1.1;
}

.interpretation {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid rgba(31, 111, 235, .18);
  border-radius: 8px;
  background: #f4f8ff;
  color: var(--text-primary);
  font-weight: 650;
}

.chart-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.chart-workspace {
  min-width: 760px;
  display: grid;
  grid-template-columns: minmax(760px, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 1rem;
}

.break-even-page:not(.scenario-planning) .chart-workspace {
  min-width: 760px;
  grid-template-columns: minmax(760px, 1fr);
}

.scenario-toggle {
  min-width: 220px !important;
  min-height: 58px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 1rem !important;
  padding: .6rem .7rem .6rem 1rem !important;
  border: 1px solid var(--border) !important;
  border-radius: 999px !important;
  background: #f2f4f7 !important;
  color: var(--navy-950) !important;
  box-shadow: none !important;
}

.scenario-toggle:hover {
  background: #eef3f9 !important;
  color: var(--navy-950) !important;
  box-shadow: none !important;
}

.scenario-toggle[aria-pressed="true"] {
  background: #e8f7f5 !important;
  color: var(--navy-950) !important;
  border-color: rgba(20, 184, 166, .38) !important;
}

.scenario-toggle-text {
  font-size: .92rem;
  font-weight: 850;
  line-height: 1.1;
  text-align: left;
}

.scenario-switch {
  position: relative;
  width: 68px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: #d0d5dd;
  transition: background var(--transition-fast);
}

.scenario-switch::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 4px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(16, 24, 40, .18);
  transition: transform var(--transition-fast);
}

.scenario-toggle[aria-pressed="true"] .scenario-switch {
  background: #14a7a2;
}

.scenario-toggle[aria-pressed="true"] .scenario-switch::after {
  transform: translateX(30px);
}

.chart-stage {
  position: relative;
  min-width: 760px;
}

#breakEvenChart {
  display: block;
  min-width: 760px;
  width: 100%;
  height: auto;
  cursor: default;
  touch-action: none;
}

.break-even-page.scenario-planning #breakEvenChart {
  cursor: crosshair;
}

.chart-readout {
  width: min(100%, 760px);
  padding: 1rem;
  border: 1px solid rgba(16, 42, 71, .08);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(16, 42, 71, .09);
  pointer-events: none;
}

.chart-readout > span {
  display: block;
  margin-bottom: .6rem;
  color: var(--blue-600);
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.chart-readout dl {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .6rem;
  margin: 0;
}

.chart-readout div {
  display: grid;
  gap: .25rem;
  padding-right: .65rem;
  border-right: 1px solid var(--border);
}

.chart-readout div:last-child {
  padding-right: 0;
  border-right: 0;
}

.chart-readout dt {
  color: var(--text-secondary);
  font-size: .82rem;
  font-weight: 760;
}

.chart-readout dd {
  margin: 0;
  color: var(--navy-950);
  font-size: .95rem;
  font-weight: 850;
}

.chart-readout .is-positive {
  color: #047857;
}

.chart-readout .is-negative {
  color: #b42318;
}

.chart-note {
  margin: .75rem 0 0;
  color: var(--text-secondary);
  font-size: .9rem;
}

.content-section p,
.method-list li,
.guidance-card p,
.faq-section details p {
  color: var(--text-secondary);
}

.method-list {
  display: grid;
  gap: .6rem;
  margin: 0;
  padding-left: 1.25rem;
}

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

.guidance-card {
  min-height: 8rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.guidance-card span {
  display: block;
  margin-bottom: .55rem;
  color: var(--blue-600);
  font-size: .85rem;
  font-weight: 800;
}

.formula-list {
  display: grid;
  gap: .75rem;
}

.formula-list p {
  margin: 0;
  padding: .75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text-primary);
}

.formula-list strong {
  color: var(--navy-950);
}

.formula-list var {
  color: var(--navy-950);
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 700;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.faq-section {
  display: grid;
  gap: .75rem;
}

.faq-section details {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.faq-section summary {
  cursor: pointer;
  padding: .9rem 1rem;
  color: var(--navy-950);
  font-weight: 800;
}

.faq-section details p {
  margin: 0;
  padding: 0 1rem 1rem;
}

.error {
  margin: .75rem 0 0;
  color: #b42318;
  font-weight: 700;
}

.hidden {
  display: none !important;
}

@media (max-width: 1080px) {
  .break-even-layout {
    grid-template-columns: 1fr;
  }

  .break-even-side-nav {
    display: none;
  }

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

@media (max-width: 760px) {
  .container {
    padding: 1.25rem 1rem 2rem;
  }

  .section-header,
  .results-header,
  .editor-actions {
    display: grid;
    justify-content: stretch;
  }

  .editor-actions button,
  .results-header button {
    width: 100%;
  }

  .input-grid,
  .summary-grid,
  .guidance-grid,
  .cost-guidance-grid {
    grid-template-columns: 1fr;
  }

  .chart-readout {
    width: auto;
  }

  .chart-workspace {
    min-width: 760px;
    grid-template-columns: 1fr;
  }

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

  .chart-readout div {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 0 0 .45rem;
  }
}