:root {
  color-scheme: light;
  --bg: #fafaf8;
  --panel: #ffffff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --line: #c8c8c8;
  --ink: #2a2a2a;
  --bar: #404040;
  --tick: #8a8a8a;
  --warn-bg: #f5f5f3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Palatino Linotype", Palatino, "Times New Roman", serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 24px 64px;
}

.page-header h1 {
  margin: 0 0 4px;
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.page-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.disclaimer {
  margin-top: 10px !important;
  max-width: 72ch;
  font-size: 0.88rem !important;
}

.presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 20px 0 24px;
}

.presets-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-right: 6px;
}

.preset-btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 6px 11px;
  border-radius: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
}

.preset-btn:hover {
  border-color: var(--ink);
}

.preset-btn.active {
  background: var(--ink);
  color: var(--panel);
  border-color: var(--ink);
}

.view-variant {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: -8px 0 20px;
}

.variant-btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 6px 11px;
  border-radius: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
}

.variant-btn:hover {
  border-color: var(--ink);
}

.variant-btn.active {
  background: var(--ink);
  color: var(--panel);
  border-color: var(--ink);
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 380px) 1fr;
  gap: 24px;
  align-items: start;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.results {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px;
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.panel-note,
.chart-context {
  margin: 0 0 12px;
  font-size: 0.86rem;
  color: var(--muted);
}

.constraint-list {
  margin: 0;
  padding-left: 18px;
}

.constraint-list li {
  margin-bottom: 6px;
}

.control-group {
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 12px;
}

.control-group:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.control-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.control-label-row label {
  font-size: 0.9rem;
}

.control-value {
  font-family: "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 0.82rem;
  color: var(--muted);
}

input[type="range"],
input[type="number"] {
  width: 100%;
  accent-color: var(--ink);
}

input[type="number"] {
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 6px 8px;
  font-family: inherit;
  background: var(--panel);
}

#eventTypesPanel {
  padding-bottom: 20px;
}

#eventTypeControls {
  padding-bottom: 4px;
}

.collapsible {
  border-top: 1px solid var(--line);
  margin-top: 10px;
  padding-top: 2px;
}

.collapsible:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.collapsible-summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  padding: 8px 0;
  list-style: none;
}

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

.collapsible-title {
  font-size: 0.9rem;
}

.collapsible-meta {
  font-family: "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 0.78rem;
  color: var(--muted);
  text-align: right;
}

.collapsible-content {
  padding-bottom: 8px;
}

.collapsible-nested {
  margin-left: 0;
}

.collapsible-fixed-costs .control-group {
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.range-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.range-col-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 4px;
}

.range-header label {
  font-size: 0.88rem;
}

.scenario-save-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.scenario-save-row input {
  flex: 1;
  border: 1px solid var(--line);
  padding: 6px 8px;
  font-family: inherit;
}

.scenario-save-row button,
.link-btn {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 6px 10px;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.link-btn {
  margin-right: 6px;
}

.fixed-cost-ref {
  margin: 0;
}

.computed-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  font-size: 0.88rem;
  color: var(--muted);
}

.computed-row strong {
  color: var(--text);
  font-family: "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 0.82rem;
}

.computed-row.computed-total {
  margin-top: 12px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  font-size: 0.92rem;
  color: var(--text);
}

.field-note {
  margin: 6px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

table tfoot th {
  border-top: 1px solid var(--line);
  font-weight: 400;
}

.warnings-panel {
  background: var(--warn-bg);
}

.warnings-panel ul {
  margin: 0;
  padding-left: 18px;
}

.warnings-panel li {
  margin-bottom: 6px;
  font-size: 0.92rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.metric-card,
.chart-card {
  background: var(--panel);
  border: none;
  border-radius: 0;
  padding: 14px 16px;
}

.chart-card {
  border: 1px solid var(--line);
}

.metric-card h3,
.chart-card h3 {
  margin: 0 0 6px;
  font-size: 0.78rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.metric-value {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 8px 6px;
  text-align: left;
  vertical-align: top;
}

th {
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.75rem;
  color: var(--muted);
}

#contributionChart svg,
#sensitivityChart svg {
  width: 100%;
  display: block;
}

#contributionChart svg {
  height: 300px;
}

.axis .domain {
  stroke: var(--line);
}

.axis .tick line {
  stroke: var(--line);
}

.axis .tick text {
  fill: var(--tick);
  font-family: Georgia, "Palatino Linotype", Palatino, serif;
  font-size: 11px;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }
}