:root {
  --bg: #f5f7f8;
  --surface: #ffffff;
  --surface-soft: #eef7f8;
  --text: #15202b;
  --muted: #586579;
  --border: #d6dee8;
  --accent: #0f4c5c;
  --accent-strong: #08333e;
  --accent-soft: #dff3f5;
  --locked: #f7f2e9;
  --locked-border: #dbc8a4;
  --ok: #0f6848;
  --shadow-soft: 0 10px 24px rgba(21, 32, 43, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

button, input { font: inherit; }

.page-shell {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 18px 14px 48px;
}

.hero,
.tool-panel,
.summary-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-soft);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 8px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.12;
}

h2 { font-size: 1.24rem; margin-bottom: 8px; }
h3 { font-size: 1rem; margin-bottom: 6px; }

.subtitle { color: var(--muted); font-size: 1.04rem; }
.status-note, .fine-print {
  border-left: 4px solid var(--accent);
  background: var(--surface-soft);
  padding: 10px 12px;
  margin-bottom: 0;
}

.section-head {
  display: grid;
  gap: 14px;
  margin-bottom: 14px;
}

.section-head.compact { align-items: end; }
.section-head p, .tool-panel > p { color: var(--muted); margin-bottom: 0; }

.city-selector {
  display: grid;
  gap: 6px;
  max-width: 420px;
  margin: 0 0 16px;
}

.city-selector label {
  font-weight: 700;
}

.city-selector select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 12px;
  color: var(--text);
  background: #fff;
  font: inherit;
}

.city-selector small {
  color: var(--muted);
}

button {
  min-height: 46px;
  border: 0;
  border-radius: 6px;
  padding: 11px 16px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}

button:hover { background: var(--accent-strong); }
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(15, 76, 92, 0.22);
  outline-offset: 2px;
}

.secondary-button { background: #e8edf3; color: var(--text); }
.secondary-button:hover { background: #d9e1eb; }

.scenario-grid,
.cost-rows {
  display: grid;
  gap: 12px;
}

.scenario-card,
.cost-row {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  padding: 14px;
}

.scenario-card {
  display: grid;
  gap: 8px;
  text-align: left;
  color: var(--text);
  font-weight: 400;
  min-height: 100%;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.scenario-card h3 {
  font-weight: 700;
}

.scenario-card.is-active {
  border-color: #8dc5cf;
  background: var(--surface-soft);
}

.scenario-card.is-active:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.scenario-card.is-locked {
  border-color: var(--locked-border);
  background: var(--locked);
}

.badge {
  width: fit-content;
  border-radius: 999px;
  padding: 3px 9px;
  background: #dff3ec;
  color: var(--ok);
  font-size: 0.78rem;
  font-weight: 700;
}

.badge.is-locked { background: #efe0c5; color: #76510f; }

.scenario-card p,
.cost-row p { margin-bottom: 0; color: var(--muted); }

.scenario-card p {
  font-weight: 400;
}

.summary-panel {
  display: grid;
  gap: 14px;
  align-items: stretch;
}

.selected-summary { color: var(--muted); margin-bottom: 0; }

.last-reviewed {
  margin-top: 10px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.review-note {
  margin-top: 18px;
  margin-bottom: 0;
  padding: 12px 14px;
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: #eef8fa;
  color: var(--muted);
}

.scenario-caution {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 2px;
  margin-bottom: 0;
  padding: 12px 14px 12px 16px;
  border: 1px solid #79b8c3;
  border-left: 6px solid var(--accent);
  border-radius: 8px;
  background: #d7eef2;
  color: var(--text);
  box-shadow: 0 8px 22px rgba(15, 76, 92, 0.08);
}

.scenario-caution[hidden] {
  display: none;
}

.scenario-caution::before {
  content: "Note";
  flex: 0 0 auto;
  padding: 3px 8px;
  border-radius: 999px;
  background: #0f4c5c;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.2;
}

.total-card,
.range-strip > div {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  background: #f9fbfd;
}

.total-card.is-primary {
  border-color: #8dc5cf;
  background: var(--surface-soft);
  box-shadow: inset 4px 0 0 var(--accent);
}

.monthly-panel {
  background: #fbfcfd;
}

.total-card span,
.range-strip span,
.cost-label small {
  display: block;
  color: var(--muted);
}

.total-card strong {
  display: block;
  font-size: 2rem;
  line-height: 1.1;
}

.range-strip {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.range-strip strong { font-size: 1.3rem; }

.cost-row {
  display: grid;
  gap: 10px;
}

.rent-cost-table {
  margin-bottom: 12px;
}

.rent-table-card {
  border: 1px solid #8dc5cf;
  border-radius: 8px;
  background: var(--surface-soft);
  padding: 14px;
}

.rent-table-title {
  display: grid;
  gap: 2px;
  margin-bottom: 10px;
}

.rent-table-title span,
.rent-table-label small {
  color: var(--muted);
}

.rent-table-header,
.rent-table-row {
  display: grid;
  gap: 8px;
}

.rent-table-header {
  display: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.rent-table-row {
  border-top: 1px solid #c7e0e5;
  padding-top: 12px;
}

.rent-table-row + .rent-table-row {
  margin-top: 10px;
}

.rent-table-label {
  display: grid;
  gap: 2px;
}

.rent-table-row label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.82rem;
}

.cost-inputs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.cost-inputs label { display: grid; gap: 4px; color: var(--muted); font-size: 0.82rem; }
input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  background: #ffffff;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 76, 92, 0.08);
}

input[type="checkbox"] {
  width: auto;
  min-height: auto;
  margin-top: 4px;
}

input:disabled {
  background: #f1f4f7;
  color: var(--muted);
}

input[readonly] {
  background: #eef7f8;
  color: var(--accent-strong);
  font-weight: 700;
}

.buffer-row {
  border-color: #8dc5cf;
  background: var(--surface-soft);
}

.optional-cost-rows {
  display: grid;
  gap: 10px;
  margin: 14px 0;
}

.manual-cost-row {
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  padding: 12px 14px;
}

.manual-cost-toggle {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
}

.manual-cost-toggle strong,
.manual-cost-toggle small,
.manual-cost-input {
  display: block;
}

.manual-cost-toggle small,
.manual-cost-input {
  color: var(--muted);
}

.manual-cost-input {
  display: grid;
  gap: 4px;
  font-size: 0.82rem;
}

.collapse-toggle {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  min-height: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  border-radius: 8px;
}

.collapse-toggle:hover {
  background: #f7fafb;
}

.collapse-toggle strong,
.collapse-toggle small {
  display: block;
}

.collapse-toggle small {
  margin-top: 4px;
  color: var(--muted);
  font-weight: 400;
}

.collapse-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: #e8edf3;
  color: var(--accent-strong);
  font-size: 1.2rem;
  line-height: 1;
  transition: transform 140ms ease, background 140ms ease;
}

.collapse-toggle[aria-expanded="true"] .collapse-icon {
  transform: rotate(45deg);
}

.collapsible-panel {
  margin-top: 14px;
}

.details-grid {
  display: grid;
  gap: 16px;
  margin-top: 10px;
}

.details-grid h3 {
  margin-bottom: 8px;
}

.check-list { margin-bottom: 16px; padding-left: 20px; }
.check-list li + li { margin-top: 6px; }

.disclaimer-box {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  background: #f6fbfc;
}

.disclaimer-box h3 {
  margin-bottom: 8px;
}

.disclaimer-box p:last-child {
  margin-bottom: 0;
}

@media (min-width: 780px) {
  .page-shell { padding-top: 28px; }
  .hero, .tool-panel, .summary-panel { padding: 24px; }
  .section-head { grid-template-columns: 1fr auto; align-items: center; }
  .scenario-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .summary-panel { grid-template-columns: 1.6fr minmax(180px, 0.7fr) minmax(240px, 0.9fr); }
  .cost-row { grid-template-columns: minmax(240px, 1fr) minmax(360px, 1fr); align-items: center; }
  .cost-inputs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .rent-table-header,
  .rent-table-row { grid-template-columns: minmax(220px, 1fr) repeat(3, minmax(130px, 0.65fr)); align-items: center; }
  .rent-table-header { display: grid; }
  .rent-table-row label { gap: 0; }
  .rent-table-row label > span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .manual-cost-row { grid-template-columns: minmax(320px, 1fr) minmax(180px, 0.4fr); align-items: center; }
  .details-grid { grid-template-columns: 1fr 1fr; }
}

.scenario-card.is-selected { box-shadow: 0 0 0 3px rgba(15, 76, 92, 0.22), var(--shadow-soft); }
.scenario-card:disabled { cursor: not-allowed; color: var(--text); }