:root {
  --bg: #f6f3ee;
  --surface: #ffffff;
  --ink: #0d0d0d;
  --ink-muted: #4a4a4a;
  --accent: #1d4ed8;
  --accent-dark: #1e3a8a;
  --border: #d8d2c8;
  --positive: #047857;
  --negative: #b91c1c;
  --radius: 12px;
  --shadow: 0 12px 40px rgba(13, 13, 13, 0.08);
  --font: "DM Sans", system-ui, -apple-system, sans-serif;
  --max: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.site-header {
  background: var(--ink);
  color: #fff;
  padding: 3rem 1.5rem 2.5rem;
}

.header-inner,
.layout,
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #93c5fd;
}

.site-header h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.lede {
  margin: 0;
  font-size: 1.125rem;
  color: #d1d5db;
  max-width: 42rem;
}

.header-top {
  margin-bottom: 0.75rem;
}

.header-top .eyebrow {
  margin-bottom: 0;
}

.side-fab--profiles {
  max-height: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-small {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  gap: 2rem;
  padding: 2rem 1.5rem 3rem;
  align-items: start;
}

.summary-panel {
  position: sticky;
  top: 1.5rem;
}

.summary-inner {
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.summary-label {
  margin: 0 0 0.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}

.summary-amount {
  margin: 0;
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.summary-meta {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.summary-updated {
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.summary-sections {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.summary-block-title {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.summary-block .summary-breakdown {
  margin: 0;
}

.summary-breakdown dd.amount-negative {
  color: var(--negative);
}

.collapsible-section {
  padding: 0;
}

.collapsible-section > summary {
  list-style: none;
  cursor: pointer;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

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

.collapsible-section > summary::after {
  content: "▸ Show section";
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.25rem;
}

.collapsible-section[open] > summary::after {
  content: "▾ Hide section";
}

.collapsible-section[open] > summary {
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.collapsible-section > :not(summary) {
  padding: 0 1.5rem 1.5rem;
}

.collapsible-section > summary .section-summary-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-summary-meta {
  font-size: 0.875rem;
  color: var(--ink-muted);
}

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

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

.btn-secondary,
.btn-remove-rental {
  font: inherit;
  cursor: pointer;
  border-radius: 8px;
}

.btn-secondary {
  margin-top: 1rem;
  padding: 0.65rem 1rem;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-weight: 600;
}

.btn-secondary:hover {
  background: var(--bg);
}

.btn-remove-rental {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--negative);
  font-size: 0.875rem;
}

.rental-property {
  margin-top: 1.25rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fafafa;
}

.rental-property-header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.rental-label-field {
  flex: 1;
  min-width: 200px;
}

.rental-property-net {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.rental-per-property-totals {
  margin-top: 1.25rem;
}

.rental-property-summary {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
}

.rental-property-summary li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.summary-breakdown {
  margin: 1.25rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--border);
}

.summary-breakdown.compact {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
}

.summary-breakdown .row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.35rem 0;
}

.summary-breakdown dt {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.summary-breakdown dd {
  margin: 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.refund-card {
  padding: 1rem;
  background: #eff6ff;
  border-radius: 8px;
  border: 1px solid #bfdbfe;
}

.refund-card-primary {
  margin-bottom: 1.25rem;
}

.refund-card-primary .refund-amount {
  font-size: 2.35rem;
}

.summary-card {
  margin-bottom: 0.25rem;
}

.refund-amount {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.refund-amount.positive {
  color: var(--positive);
}

.refund-amount.negative {
  color: var(--negative);
}

.refund-hint {
  margin: 0.35rem 0 0;
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.calculator-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.form-section h2 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.form-section.highlight-section {
  border: 2px solid var(--accent);
  background: #f8fafc;
}

.refund-hint a {
  color: var(--accent-dark);
  font-weight: 600;
}

.subsection-title {
  margin: 1.5rem 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.section-note {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--ink-muted);
}

.field-grid {
  display: grid;
  gap: 1rem;
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field.span-2 {
  grid-column: span 2;
}

.field > span {
  font-size: 0.875rem;
  font-weight: 500;
}

.field input,
.field select,
.computed-field output {
  font: inherit;
  font-size: 1rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  width: 100%;
}

.field input:focus,
.field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.checkbox-field {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.65rem;
}

.checkbox-field input {
  width: auto;
  margin-top: 0.2rem;
  accent-color: var(--accent);
}

.computed-field output {
  display: block;
  font-weight: 600;
  background: var(--bg);
}

.site-footer {
  padding: 0 1.5rem 3rem;
  font-size: 0.875rem;
  color: var(--ink-muted);
}

.site-footer p {
  margin: 0 0 0.75rem;
  max-width: 52rem;
}

.site-footer a {
  color: var(--accent);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin-top: 0.25rem;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
}

.footer-link-github:hover {
  color: var(--accent-dark);
}

.footer-icon {
  flex-shrink: 0;
}

.footer-meta-sep {
  color: var(--ink-muted);
}

body.non-resident .resident-only,
body.non-resident .resident-row {
  display: none !important;
}

.prorata-fab,
.side-fab {
  padding: 0.85rem 0.55rem;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.side-fab-stack {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.side-fab {
  position: static;
}

.side-fab--right {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
}

.side-fab:hover {
  background: #eff6ff;
}

.side-backdrop,
.prorata-backdrop {
  position: fixed;
  inset: 0;
  z-index: 45;
  background: rgba(13, 13, 13, 0.35);
}

.side-panel,
.prorata-panel {
  position: fixed;
  top: 0;
  z-index: 50;
  width: min(100%, 22rem);
  height: 100%;
  max-height: 100dvh;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 0 32px rgba(13, 13, 13, 0.12);
  padding: 1.25rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: transform 0.22s ease;
}

.side-panel--right {
  right: 0;
  border-left: 2px solid var(--ink);
  transform: translateX(100%);
}

.side-panel--left {
  left: 0;
  border-right: 2px solid var(--ink);
  transform: translateX(-100%);
}

body.side-open-profile #profile-panel,
body.side-open-prorata #prorata-panel {
  transform: translateX(0);
}

body.side-open-profile .side-fab-stack,
body.side-open-prorata .side-fab-stack {
  opacity: 0;
  pointer-events: none;
}

.side-panel[hidden] {
  display: none !important;
}

.side-panel-header,
.prorata-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  flex-shrink: 0;
}

.side-panel-header h2,
.prorata-panel-header h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.side-panel-close,
.prorata-close {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.side-panel-intro,
.side-panel-note,
.prorata-intro,
.prorata-mode-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-muted);
  flex-shrink: 0;
}

.side-panel-target {
  flex-shrink: 0;
}

.side-panel-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding-right: 0.15rem;
}

.side-panel-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.side-panel-actions .btn-secondary {
  margin-top: 0;
}

.btn-danger-text {
  color: var(--negative);
}

.side-panel-apply,
.prorata-apply {
  margin-top: auto;
  flex-shrink: 0;
}

.prorata-modes {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.prorata-mode {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.prorata-mode input {
  accent-color: var(--accent);
}

.prorata-mode-panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.prorata-mode-panel[hidden] {
  display: none !important;
}

.prorata-result {
  padding: 0.85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.prorata-result-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.prorata-result-value {
  display: block;
  margin-top: 0.25rem;
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.prorata-apply {
  margin-top: auto;
}

.btn-primary {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-dark);
}

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

  .summary-panel {
    position: static;
  }

  .side-fab-stack {
    top: auto;
    bottom: 1rem;
    right: 1rem;
    transform: none;
    flex-direction: row;
    gap: 0.5rem;
  }

  .side-fab--right {
    writing-mode: horizontal-tb;
    border: 2px solid var(--ink);
    border-radius: var(--radius);
  }

  .prorata-fab {
    top: auto;
    bottom: 1rem;
    transform: none;
    writing-mode: horizontal-tb;
    border: 2px solid var(--ink);
    border-radius: var(--radius);
    right: 1rem;
  }

  .field-grid.two {
    grid-template-columns: 1fr;
  }

  .field.span-2 {
    grid-column: span 1;
  }
}