:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e0e2e7;
  --text: #1c1f26;
  --text-muted: #4b5563;
  --accent: #2f6fed;
  --accent-contrast: #ffffff;
  --danger: #d64545;
  --radius: 10px;

  /* Category colors: each card is striped by what kind of information it holds. */
  --cat-setup: #3b82f6; /* Scope, Land — project foundation/inputs */
  --cat-cost: #d97706; /* Project Cost, Expenses — money going out */
  --cat-capital: #8b5cf6; /* Capital — how it's funded */
  --cat-revenue: #059669; /* Investment Strategy — money coming in */
  --cat-results: #0891b2; /* Cash Flow — derived analysis */
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161c;
    --surface: #1c1f27;
    --border: #2b2f3a;
    --text: #e8eaef;
    --text-muted: #a3acbc;
    --accent: #5b8bf0;
    --accent-contrast: #0d1117;

    --cat-setup: #60a5fa;
    --cat-cost: #fbbf24;
    --cat-capital: #a78bfa;
    --cat-revenue: #34d399;
    --cat-results: #22d3ee;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}

header.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

header.app-header h1 {
  font-size: 1.35rem;
  margin: 0;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.app-body {
  display: flex;
  align-items: flex-start;
}

.sidebar {
  width: 280px;
  flex-shrink: 0;
  box-sizing: border-box;
  padding: 1.75rem 1.5rem;
  background: var(--surface);
  border-right: 1px solid var(--border);
  min-height: calc(100vh - 74px);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.sidebar-header h3 {
  margin: 0;
  font-size: 1rem;
}

.sidebar-label,
.section-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  margin: 1.75rem 0 0.6rem;
}

.sidebar .hint {
  font-size: 0.88rem;
}

.current-scenario {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0.5rem 0;
}

.current-scenario strong {
  color: var(--text);
}

.sidebar-actions {
  display: flex;
  gap: 0.5rem;
  margin: 0.6rem 0;
}

.sidebar-actions .btn {
  flex: 1;
  text-align: center;
}

.btn-icon {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  line-height: 1;
  cursor: pointer;
  font-size: 1.05rem;
}

.scenario-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  max-height: 45vh;
  overflow-y: auto;
}

.scenario-list li {
  padding: 0.55rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  word-break: break-word;
}

.scenario-list li:hover {
  background: var(--bg);
}

.scenario-list li.active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.scenario-list li.empty {
  color: var(--text-muted);
  cursor: default;
}

.btn-link {
  border: none;
  background: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0.5rem 0 0;
  font-size: 0.85rem;
  text-decoration: underline;
  display: block;
  margin-top: 0.75rem;
}

main {
  flex: 1;
  max-width: 1150px;
  margin: 0 auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: var(--radius);
  padding: 2rem;
}

.card-setup {
  border-left-color: var(--cat-setup);
}

.card-cost {
  border-left-color: var(--cat-cost);
}

.card-capital {
  border-left-color: var(--cat-capital);
}

.card-revenue {
  border-left-color: var(--cat-revenue);
}

.card-results {
  border-left-color: var(--cat-results);
}

.category-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.category-tag.cat-setup {
  background: color-mix(in srgb, var(--cat-setup) 16%, transparent);
  color: var(--cat-setup);
}

.category-tag.cat-cost {
  background: color-mix(in srgb, var(--cat-cost) 16%, transparent);
  color: var(--cat-cost);
}

.category-tag.cat-capital {
  background: color-mix(in srgb, var(--cat-capital) 16%, transparent);
  color: var(--cat-capital);
}

.category-tag.cat-revenue {
  background: color-mix(in srgb, var(--cat-revenue) 16%, transparent);
  color: var(--cat-revenue);
}

.category-tag.cat-results {
  background: color-mix(in srgb, var(--cat-results) 16%, transparent);
  color: var(--cat-results);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.card-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
  font-weight: 600;
}

.btn-secondary {
  margin-top: 1rem;
}

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

.data-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.data-table.wide {
  min-width: 1320px;
  table-layout: fixed;
}

.data-table.wide input,
.data-table.wide select {
  min-width: 0;
}

.data-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  font-weight: 600;
}

.data-table th,
.data-table td {
  padding: 0.85rem 0.7rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

.data-table input,
.data-table select {
  width: 100%;
  min-width: 84px;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.88rem;
}

.data-table select {
  min-width: 122px;
  padding-right: 1.5rem;
}

.data-table input.exp-name,
.data-table input.li-description {
  min-width: 150px;
}

.data-table td.readonly {
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.data-table tfoot td {
  border-top: 2px solid var(--border);
  border-bottom: none;
}

.data-table .empty {
  color: var(--text-muted);
  text-align: center;
  padding: 1.25rem;
}

.cashflow-table td,
.cashflow-table th {
  text-align: right;
}

.cashflow-table td:first-child,
.cashflow-table th:first-child {
  text-align: left;
}

.cashflow-table .expand-toggle {
  border: none;
  background: none;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.cashflow-table .breakdown-row td {
  color: var(--text-muted);
  font-size: 0.85rem;
  background: var(--bg);
}

.cashflow-table .breakdown-label {
  padding-left: 1.4rem;
  text-align: left;
}

.cashflow-table .total-row td {
  font-weight: 700;
  font-size: 0.98rem;
  border-top: 2px solid var(--border);
}

.applies-to-cell {
  display: flex;
  justify-content: flex-start;
  gap: 0.5rem;
  white-space: nowrap;
  overflow: hidden;
}

.applies-to-cell label {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
}

.applies-to-cell input[type='checkbox'] {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  cursor: pointer;
}

.amount-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.amount-input-wrap input {
  flex: 1;
  min-width: 0;
}

.input-suffix {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.btn-remove {
  border: none;
  background: transparent;
  color: var(--danger);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  align-items: end;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-grid input,
.form-grid select {
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.98rem;
}

.form-grid select {
  padding-right: 1.6rem;
}

.computed {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--bg);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.computed strong {
  font-size: 1.25rem;
  color: var(--text);
}

.mode-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.mode-btn {
  border: none;
  background: var(--surface);
  color: var(--text-muted);
  padding: 0.45rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.mode-toggle.small {
  display: flex;
  width: max-content;
  margin-top: 0.3rem;
}

.mode-toggle.small .mode-btn {
  padding: 0.2rem 0.65rem;
  font-size: 0.72rem;
  white-space: nowrap;
}

.strategy-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.strategy-option {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.strategy-option.selected {
  border-color: var(--accent);
  border-width: 2px;
}

.strategy-option .form-grid {
  grid-template-columns: 1fr;
}

.strategy-select {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.02rem;
}

.strategy-select input[type='checkbox'] {
  width: 17px;
  height: 17px;
  cursor: pointer;
}

.strategy-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  margin-bottom: 0.5rem;
  white-space: nowrap;
}

.hint {
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--text-muted);
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  margin: 1.75rem 0 0.5rem;
}

.summary-grid h4 {
  margin: 0 0 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.94rem;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--border);
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top-width: 4px;
  border-top-color: var(--cat-results);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
}

.summary-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.summary-item span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.summary-item strong {
  font-size: 1.4rem;
}

.summary-item.grand strong {
  color: var(--accent);
}