/* Simulated populations page (population.html) */
.pp { max-width: 1240px; margin: 0 auto; padding: 16px 20px 40px; display: grid; gap: 16px; }
.pp h2 { margin: 0 0 6px; font-size: 18px; }
.pp h3 { margin: 0 0 4px; font-size: 14.5px; }
.pp-intro p, .pp-more-body p { margin: 0 0 10px; font-size: 14px; line-height: 1.55; color: var(--wlv-ink2); max-width: 980px; }
.pp-intro strong { color: var(--wlv-ink); }
.pp-more > summary { cursor: pointer; font-weight: 650; color: var(--wlv-accent); font-size: 13.5px; }
.pp-more-body { margin-top: 8px; }
.pp-ctl-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.pp-ctl { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--wlv-ink2); }
.pp-ctl input, .pp-ctl select { font: inherit; font-size: 13px; padding: 5px 7px; border-radius: 7px; border: 1px solid var(--wlv-border);
  background: var(--wlv-surface); color: var(--wlv-ink); }
.pp-ctl input[type=number] { width: 6.5em; }
.pp-ctl[hidden] { display: none; }
.pp-check { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--wlv-ink2); margin-left: -8px; }
.pp-status { margin: 8px 0 0; font-size: 13px; color: var(--wlv-ink2); }
.pp-plot-wrap { position: relative; margin-top: 10px; }
#pp-canvas { display: block; width: 100%; height: 460px; border-radius: 8px; touch-action: none; }
.pp-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 8px; font-size: 12.5px; color: var(--wlv-ink2); }
.pp-legend span.k { display: inline-flex; align-items: center; gap: 6px; }
.pp-legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.pp-h2 { margin: 0 0 4px; font-size: 18px; }
.pp-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 8px; }
.pp-card { padding: 12px 14px; border-radius: 12px; background: var(--wlv-surface); box-shadow: inset 0 0 0 1px var(--wlv-border); min-width: 0; }
.pp-card.pp-wide { grid-column: 1 / -1; }
.pp-card .src { margin: 8px 0 0; font-size: 11.5px; color: var(--wlv-muted); line-height: 1.45; }
.pp-card .sub { margin: 0 0 8px; font-size: 12.5px; color: var(--wlv-ink2); }
.pp-key { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--wlv-ink2); margin: 0 0 8px; }
.pp-key span { display: inline-flex; align-items: center; gap: 5px; }
.pp-key i { width: 12px; height: 8px; border-radius: 2px; display: inline-block; }
.pp-key i.s { background: var(--wlv-accent); } .pp-key i.u { background: var(--pp-uk); }

/* paired horizontal bars: sample v NHSBT */
.pp-bars { display: grid; grid-template-columns: minmax(90px, max-content) 1fr; gap: 6px 10px; align-items: center; font-size: 12.5px; }
.pp-bars .lab { color: var(--wlv-ink); line-height: 1.25; }
.pp-pair { display: grid; gap: 2px; position: relative; }
.pp-bar { display: flex; align-items: center; gap: 6px; height: 12px; }
.pp-bar b { display: block; height: 10px; border-radius: 0 4px 4px 0; min-width: 2px; }
.pp-bar.s b { background: var(--wlv-accent); } .pp-bar.u b { background: var(--pp-uk); }
.pp-bar em { font-style: normal; font-size: 11.5px; color: var(--wlv-ink2); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* median (IQR) rows */
.pp-ranges { display: grid; gap: 10px; }
.pp-range { display: grid; grid-template-columns: minmax(110px, 170px) 1fr; gap: 10px; align-items: center; font-size: 12.5px; }
.pp-range .lab { color: var(--wlv-ink); }
.pp-range svg { width: 100%; height: 44px; overflow: visible; }
.pp-range text { font-size: 10.5px; fill: var(--wlv-ink2); font-variant-numeric: tabular-nums; }
.pp-range .ax { stroke: var(--wlv-grid); }
.pp-range .iqr-s { stroke: var(--wlv-accent); stroke-width: 6; stroke-linecap: round; }
.pp-range .iqr-u { stroke: var(--pp-uk); stroke-width: 6; stroke-linecap: round; }
.pp-range .med { fill: var(--wlv-surface); stroke-width: 2; }
.pp-range .med-s { stroke: var(--wlv-accent); } .pp-range .med-u { stroke: var(--pp-uk); }

.pp-stat { display: flex; gap: 22px; flex-wrap: wrap; align-items: baseline; }
.pp-stat div { display: grid; gap: 2px; }
.pp-stat strong { font-size: 22px; font-variant-numeric: tabular-nums; }
.pp-stat span { font-size: 12px; color: var(--wlv-ink2); }
.pp-note { font-size: 12px; color: var(--wlv-ink2); margin: 6px 0 0; }
.pp-tag { display: inline-block; padding: 0 6px; border-radius: 5px; font-size: 11px; font-weight: 650; color: var(--wlv-muted); box-shadow: inset 0 0 0 1px currentColor; margin-left: 4px; vertical-align: 1px; }

.pp { --pp-uk: #5f5e5a; --pp-y0: #4a4945; --pp-y1: #6b6a64; --pp-y2: #8f8d86; --pp-y3: #b4b2a9; --pp-y4: #d3d1c7; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .pp { --pp-uk: #b9b8b0; --pp-y0: #e6e4dc; --pp-y1: #c3c1b8; --pp-y2: #9d9b94; --pp-y3: #777671; --pp-y4: #575652; } }
:root[data-theme="dark"] .pp { --pp-uk: #b9b8b0; --pp-y0: #e6e4dc; --pp-y1: #c3c1b8; --pp-y2: #9d9b94; --pp-y3: #777671; --pp-y4: #575652; }
/* one bar per NHSBT year: newest darkest (light mode) / brightest (dark mode) */
.pp-bar.y0 b, .pp-key i.y0 { background: var(--pp-y0); } .pp-bar.y1 b, .pp-key i.y1 { background: var(--pp-y1); }
.pp-bar.y2 b, .pp-key i.y2 { background: var(--pp-y2); } .pp-bar.y3 b, .pp-key i.y3 { background: var(--pp-y3); }
.pp-bar.y4 b, .pp-key i.y4 { background: var(--pp-y4); }
.pp-years .pp-pair { gap: 1px; margin-bottom: 4px; }
.pp-years .pp-bar { height: 9px; } .pp-years .pp-bar b { height: 7px; }
.pp-years .pp-bar em { font-size: 10.5px; }

@media (max-width: 760px) {
  .pp { padding: 12px 16px 32px; }
  .top-inner { flex-wrap: wrap; row-gap: 6px; }
  .top-links { justify-content: flex-start; }
  .pp-ctl { flex-wrap: wrap; max-width: 100%; }
  .pp-ctl select { max-width: 100%; min-width: 0; }
  #pp-mix { width: 100%; }
  .pp-bars { grid-template-columns: 1fr; gap: 2px; }
  .pp-bars .lab { margin-top: 6px; }
  .pp-cards { grid-template-columns: 1fr; }
  #pp-canvas { height: 360px; }
  .pp-range { grid-template-columns: 1fr; gap: 2px; }
  .pp-check { margin-left: 0; }
}