:root {
  --bg: #0b1015;
  --panel: #131a22;
  --panel-2: #1a232d;
  --line: #253140;
  --text: #e6edf3;
  --muted: #8b9bb0;
  --faint: #62738a;
  --accent: #2dd4bf;
  --accent-dim: #14766b;
  --amber: #fbbf24;
  --good: #4ade80;
  --warn: #f87171;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1280px; margin: 0 auto; padding: 32px 20px 64px; }

header h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: -0.02em; }
header p { margin: 0 0 28px; color: var(--muted); max-width: 64ch; }

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

/* ---------- panels & fields ---------- */

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.panel + .panel { margin-top: 16px; }

.panel h2 {
  margin: 0 0 18px;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--muted); font-weight: 600;
}

.field { margin-bottom: 20px; }
.field:last-child { margin-bottom: 0; }

.field-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 7px; gap: 10px;
}
.field label { font-size: 13px; color: var(--muted); }

.numwrap { display: flex; align-items: baseline; gap: 5px; }
.numwrap .cur { font-size: 10.5px; color: var(--faint); letter-spacing: 0.04em; }

input[type="number"] {
  width: 104px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 6px;
  padding: 4px 8px;
  font: inherit; font-size: 13px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
input[type="number"]:focus { outline: none; border-color: var(--accent-dim); }

select {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 6px;
  padding: 7px 9px;
  font: inherit; font-size: 13px;
}
select:focus { outline: none; border-color: var(--accent-dim); }

input[type="range"] {
  width: 100%; -webkit-appearance: none; appearance: none;
  background: transparent; height: 18px; margin: 0; cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track { height: 4px; background: var(--panel-2); border-radius: 2px; }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); margin-top: -5px; border: none;
}
input[type="range"]::-moz-range-track { height: 4px; background: var(--panel-2); border-radius: 2px; }
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: none; }

.seg { display: flex; gap: 4px; background: var(--panel-2); padding: 3px; border-radius: 7px; }
.seg button {
  flex: 1; background: transparent; border: none; color: var(--muted);
  font: inherit; font-size: 12.5px; padding: 6px 4px; border-radius: 5px; cursor: pointer;
}
.seg button[aria-pressed="true"] { background: var(--accent-dim); color: #eafffb; }

.check { display: flex; gap: 9px; align-items: flex-start; cursor: pointer; }
.check input { margin-top: 3px; accent-color: var(--accent); }
.check span { font-size: 13px; color: var(--muted); }

.hint { font-size: 11.5px; color: var(--faint); margin-top: 6px; line-height: 1.45; }

.field.last { margin-bottom: 0; }

/* A slider whose value is shown as a label rather than an editable box. */
.lbl-val {
  font-size: 12.5px; color: var(--accent);
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}

/* Whichever of withdrawal-rate / death-age the current mode ignores. */
.field.inert { opacity: .35; pointer-events: none; }
.field.inert .lbl-val { color: var(--faint); }

.panel h2 .count {
  float: right; text-transform: none; letter-spacing: 0;
  font-size: 11px; color: var(--faint); font-weight: 400;
}

.fx-status { display: flex; align-items: center; gap: 6px; margin-top: 8px; font-size: 11.5px; color: var(--faint); }
.fx-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--faint); flex: none; }
.fx-dot.live { background: var(--good); }
.fx-dot.cached { background: var(--accent); }
.fx-dot.offline { background: var(--amber); }
.fx-dot.loading { background: var(--faint); animation: fxpulse 1s ease-in-out infinite; }
@keyframes fxpulse { 0%,100% { opacity: .3 } 50% { opacity: 1 } }
.fx-refresh {
  margin-left: auto; background: none; border: none; color: var(--faint);
  font: inherit; font-size: 11.5px; text-decoration: underline; cursor: pointer; padding: 0;
}
.fx-refresh:hover { color: var(--accent); }
.fx-refresh[disabled] { opacity: .4; cursor: default; text-decoration: none; }

.reset {
  margin-top: 22px; width: 100%; background: transparent;
  border: 1px solid var(--line); color: var(--muted);
  padding: 8px; border-radius: 6px; font: inherit; font-size: 13px; cursor: pointer;
}
.reset:hover { border-color: var(--accent-dim); color: var(--text); }

/* ---------- summary ---------- */

.summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 20px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.stat .k { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 8px; }
.stat .v { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat .s { font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.stat .v.accent { color: var(--accent); }
.stat .v.amber { color: var(--amber); }

/* ---------- chart ---------- */

.chart-wrap { position: relative; }
.chart-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.chart-bar .grow { flex: 1; }
.chart-bar select { width: auto; min-width: 190px; }
.chart-bar .lbl { font-size: 12px; color: var(--muted); }

.zoombtns { display: flex; gap: 5px; }
.zoombtns button {
  background: var(--panel-2); border: 1px solid var(--line); color: var(--muted);
  width: 30px; height: 30px; border-radius: 6px; font: inherit; font-size: 14px; cursor: pointer;
}
.zoombtns button.wide { width: auto; padding: 0 11px; font-size: 12.5px; }
.zoombtns button:hover { border-color: var(--accent-dim); color: var(--text); }

#chart { width: 100%; height: 420px; display: block; cursor: grab; touch-action: none; }
#chart.grabbing { cursor: grabbing; }

#chart .grid { stroke: #1e2833; stroke-width: 1; }
#chart .tick { fill: var(--faint); font-size: 10.5px; }
#chart .axis-label { fill: var(--muted); font-size: 11.5px; }
#chart .dot { cursor: pointer; opacity: 0.85; stroke: var(--panel); stroke-width: 1.5; transition: opacity .12s; }
#chart .dot:hover { opacity: 1; }
#chart .dot.sel { stroke: #fff; stroke-width: 2.5; opacity: 1; }
#chart .dot:focus { outline: none; stroke: #fff; stroke-width: 2.5; }
#chart .dot-label { fill: var(--muted); font-size: 10.5px; pointer-events: none; }
#chart .dot-label.sel { fill: #fff; font-size: 12px; font-weight: 600; }

.tip {
  position: absolute; display: none; pointer-events: none;
  background: #0d1319; border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 11px; width: 218px; z-index: 5;
  box-shadow: 0 8px 24px rgba(0,0,0,.45);
}
.tip .t-city { font-size: 13px; font-weight: 600; margin-bottom: 3px; }
.tip .t-line { font-size: 11.5px; color: var(--muted); }

.legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }
.legend .lg { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--muted); }
.legend .lg i, .chip i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.chart-note { font-size: 11.5px; color: var(--faint); margin-top: 10px; }
.axis-hint { margin: -4px 0 10px; }

/* ---------- how to read the chart ---------- */

.explain {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 14px;
}
.explain h3 {
  margin: 0 0 8px;
  font-size: 11px; text-transform: uppercase; letter-spacing: .09em;
  color: var(--muted); font-weight: 600;
}
.explain p { margin: 0 0 8px; font-size: 12.5px; line-height: 1.6; color: var(--muted); }
.explain p:last-child { margin-bottom: 0; }
.explain strong { color: var(--text); font-weight: 600; }
.explain .explain-note { color: var(--faint); font-size: 12px; }

/* ---------- city popup ---------- */

/* Fixed rather than absolute so it can escape the panel's overflow and sit
   wherever the cursor is, including over the chart itself. */
.popup {
  position: fixed;
  display: none;
  z-index: 40;
  width: 460px;
  max-height: min(76vh, 700px);
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 18px 50px rgba(0,0,0,.6);
}

/* ---------- city detail ---------- */

.detail { margin-top: 16px; }

.detail-empty {
  display: flex; align-items: center; gap: 14px;
  color: var(--muted); font-size: 13.5px; padding: 6px 2px;
}
.detail-empty .de-icon { font-size: 22px; }

.d-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.d-city { display: flex; align-items: center; gap: 9px; font-size: 20px; font-weight: 600; letter-spacing: -0.01em; }
.d-flag { font-size: 22px; }
.d-country { color: var(--muted); font-size: 13px; margin-top: 2px; }
.d-close {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  width: 26px; height: 26px; border-radius: 6px; cursor: pointer; font-size: 12px; line-height: 1;
}
.d-close:hover { border-color: var(--warn); color: var(--warn); }

.d-money {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin: 16px 0 4px; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.dm-k { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 5px; }
.dm-v { font-size: 19px; font-weight: 600; font-variant-numeric: tabular-nums; }
.dm-v.accent { color: var(--accent); }

.d-grid { margin-top: 4px; }

/* Label stacked above the value rather than beside it. A side-by-side grid
   left the prose column ~39 characters wide, which reads badly; stacking
   gives it the popup's full width and roughly 65 characters a line. */
.d-row { padding: 13px 0; border-bottom: 1px solid var(--line); }
.d-row:last-child { border-bottom: none; }
.d-k {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--muted); margin-bottom: 5px;
}
.d-v { font-size: 14px; line-height: 1.55; }
.d-sub { font-size: 13px; color: var(--faint); margin-top: 5px; line-height: 1.62; }

.meter { display: inline-block; width: 60px; height: 5px; background: var(--panel-2); border-radius: 3px; overflow: hidden; vertical-align: middle; margin-left: 6px; }
.meter > i { display: block; height: 100%; background: var(--accent); border-radius: 3px; }

/* ---------- filters ---------- */

.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  font: inherit; font-size: 12.5px; padding: 5px 11px; border-radius: 999px; cursor: pointer;
}
.chip[aria-pressed="true"] { border-color: var(--accent-dim); background: rgba(45,212,191,.09); color: var(--accent); }
.chip[aria-pressed="false"] i { opacity: .3; }

/* ---------- results table ---------- */

.results { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }

.row {
  display: grid;
  grid-template-columns: 32px minmax(150px, 1.6fr) 104px 104px minmax(120px, 1.4fr) 74px;
  gap: 14px; align-items: center; padding: 12px 18px;
  border-bottom: 1px solid var(--line); cursor: pointer;
}
.row:last-child { border-bottom: none; }
.row:hover { background: var(--panel-2); }
.row.on { background: rgba(45,212,191,.07); box-shadow: inset 3px 0 0 var(--accent); }
.row:focus { outline: none; background: var(--panel-2); }

.row.head {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); padding-top: 11px; padding-bottom: 11px;
  background: var(--panel-2); cursor: default;
}
.row.head:hover { background: var(--panel-2); }
.row.head .num { text-align: right; }

.rank { color: #56677d; font-size: 12.5px; font-variant-numeric: tabular-nums; }
.place .c { font-weight: 500; }
.place .r { font-size: 11.5px; color: var(--muted); }
.num { text-align: right; font-variant-numeric: tabular-nums; font-size: 13.5px; }
.num.dim { color: var(--muted); }

.barcell { display: flex; align-items: center; gap: 9px; }
.bar { flex: 1; height: 6px; background: var(--panel-2); border-radius: 3px; overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 3px; background: var(--accent); }
.bar > i.mid { background: var(--amber); }
.bar > i.far { background: var(--warn); }
.yrs { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; min-width: 46px; }

.age { text-align: right; font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums; }
.age.now { color: var(--good); }
.age.never { font-size: 12.5px; font-weight: 400; color: #56677d; }

.empty { padding: 40px 18px; text-align: center; color: var(--muted); }

/* ---------- sensitivity ---------- */

.sens table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.sens th, .sens td {
  padding: 9px 12px; text-align: right;
  border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums;
}
.sens th:first-child, .sens td:first-child { text-align: left; }
.sens th { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; }
.sens tr:last-child td { border-bottom: none; }

/* ---------- footer ---------- */

details.about { margin-top: 20px; }
details.about summary {
  cursor: pointer; color: var(--muted); font-size: 13px;
  padding: 10px 0; list-style: none;
}
details.about summary::-webkit-details-marker { display: none; }
details.about summary::before { content: "▸ "; color: var(--faint); }
details.about[open] summary::before { content: "▾ "; }

footer, .about-body { margin-top: 12px; color: var(--faint); font-size: 12px; line-height: 1.65; }
footer strong, .about-body strong { color: var(--muted); font-weight: 600; }
.about-body p { margin: 0 0 12px; }
.about-body p:last-child { margin-bottom: 0; }

@media (max-width: 980px) {
  .popup { width: calc(100vw - 24px); max-height: 78vh; }
  .layout { grid-template-columns: 1fr; }
  .summary { grid-template-columns: 1fr; }
  .row { grid-template-columns: 24px 1fr 88px 64px; row-gap: 8px; }
  .row .barcell { grid-column: 1 / -1; }
  .row.head { display: none; }
  .d-money { grid-template-columns: 1fr; }
  .d-row { grid-template-columns: 1fr; gap: 4px; }
  #chart { height: 340px; }
}