/* Budget planner — page layout and form styles */

.budget-page-intro {
  margin-bottom: 1.5rem;
}

.budget-page-intro h1 {
  margin: 0 0 0.35rem;
  font-size: var(--font-headline-size);
  font-weight: var(--font-headline-weight);
  letter-spacing: -0.01em;
}

.budget-page-intro p {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

.budget-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 1.5rem;
  align-items: start;
}

.budget-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.budget-card h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.budget-form {
  display: grid;
  gap: 0.65rem;
}

.budget-form-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-container-low);
  overflow: hidden;
}

.budget-form-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.budget-form-section summary::-webkit-details-marker {
  display: none;
}

.budget-form-section summary::after {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.15s ease;
  flex-shrink: 0;
  margin-left: 0.5rem;
}

.budget-form-section[open] summary::after {
  transform: rotate(-135deg);
}

.budget-form-section-body {
  display: grid;
  gap: 0.65rem;
  padding: 0 0.85rem 0.85rem;
  border-top: 1px solid var(--border);
}

.budget-form label {
  display: grid;
  gap: 0.35rem;
  font-size: var(--font-label-sm-size);
  font-weight: var(--font-label-sm-weight);
  letter-spacing: var(--font-label-sm-spacing);
  text-transform: uppercase;
  color: var(--muted);
}

.budget-form input {
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--input-text);
  font-size: 1rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
}

.budget-form input:focus {
  outline: 2px solid var(--btn-primary);
  outline-offset: 0;
  border-color: var(--btn-primary);
}

:root[data-theme="dark"] .budget-form input:focus {
  outline-color: var(--accent);
  border-color: var(--accent);
}

.info-box {
  margin-top: 0.75rem;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-container-low);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
}

.budget-results {
  display: grid;
  gap: 0.75rem;
}

.summary-tiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.summary-tile {
  border-radius: var(--radius-lg);
  padding: 1rem 1.1rem;
}

.summary-tile-label {
  margin: 0 0 0.35rem;
  font-size: var(--font-label-sm-size);
  font-weight: var(--font-label-sm-weight);
  letter-spacing: var(--font-label-sm-spacing);
  text-transform: uppercase;
  opacity: 0.85;
}

.summary-tile-value {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.summary-tile-primary {
  background: var(--btn-primary);
  color: var(--on-primary);
}

.summary-tile-secondary {
  background: var(--accent-secondary);
  color: var(--on-primary);
}

.summary-tile-accent {
  background: var(--surface-container-low);
  border: 1px solid var(--border);
  color: var(--text);
}

.summary-tile-accent .summary-tile-label {
  color: var(--muted);
  opacity: 1;
}

.summary-tile-negative {
  background: var(--error-container);
  border: 1px solid var(--error);
  color: var(--error);
}

.summary-tile-negative .summary-tile-label {
  color: inherit;
  opacity: 0.9;
}

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.breakdown-table th,
.breakdown-table td {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
  text-align: right;
}

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

.breakdown-table thead th {
  font-size: var(--font-label-sm-size);
  font-weight: var(--font-label-sm-weight);
  letter-spacing: var(--font-label-sm-spacing);
  text-transform: uppercase;
  color: var(--muted);
  border-bottom-width: 2px;
}

.breakdown-table .row-total td {
  border-bottom: 0;
  padding-top: 0.75rem;
  font-weight: 700;
  color: var(--accent-secondary);
}

.breakdown-table .row-total td:first-child {
  color: var(--text);
}

.budget-charts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.budget-charts .chart-panel-wide {
  grid-column: 1 / -1;
}

.chart-panel h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.chart-panel-desc {
  margin: -0.35rem 0 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--muted);
}

.chart-svg-wrap {
  width: 100%;
  overflow-x: auto;
  display: flex;
  justify-content: center;
}

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 280px;
}

.chart-svg-donut {
  max-width: 280px;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.65rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.chart-legend-swatch {
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 3px;
  flex-shrink: 0;
}

.budget-page-disclaimer {
  margin-top: 1.5rem;
}

@media (max-width: 900px) {
  .budget-layout {
    grid-template-columns: 1fr;
  }

  .summary-tiles {
    grid-template-columns: 1fr;
  }

  .budget-charts {
    grid-template-columns: 1fr;
  }

  .budget-charts .chart-panel-wide {
    grid-column: auto;
  }
}