:root{
  --paper:#e6e7e1; --card:#f7f7f2; --card2:#fdfdfa;
  --ink:#16222d; --soft:#566571; --faint:#8b958d;
  --line:#cdcfc4; --line2:#dcddd4;
  --magenta:#bb2b7e; --blue:#2d6ca8;
  --good:#3e8a5a; --bad:#c0392b; --na:#9aa097;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  --sans:'Archivo',system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:15px;line-height:1.5;}
a{color:var(--blue)}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}

/* sample banner */
#banner{background:var(--magenta);color:#fff;font-family:var(--mono);font-size:12.5px;
  letter-spacing:.02em;text-align:center;padding:7px 14px}
#banner b{font-weight:600}
#banner.hide{display:none}

/* header */
header{border-bottom:1px solid var(--line);background:
  repeating-linear-gradient(0deg,transparent,transparent 27px,rgba(22,34,45,.025) 28px);}
.brandrow{display:flex;align-items:baseline;gap:14px;padding-top:26px;flex-wrap:wrap}
.mark{font-family:var(--mono);font-weight:600;font-size:23px;letter-spacing:.18em;
  color:var(--ink);border:1.5px solid var(--ink);padding:3px 10px 2px;border-radius:2px}
.tag{font-family:var(--mono);font-size:12px;color:var(--soft);letter-spacing:.04em}
.thesis{margin:18px 0 6px;font-size:clamp(22px,3.6vw,33px);font-weight:800;
  line-height:1.12;max-width:20ch;letter-spacing:-.01em}
.thesis em{font-style:normal;color:var(--magenta)}
.sub{color:var(--soft);max-width:62ch;margin:0 0 22px}

/* hero spectrum */
.spectrum-lab{font-family:var(--mono);font-size:11px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--faint);margin:0 0 7px}
.spectrum{display:flex;height:30px;border-radius:3px;overflow:hidden;border:1px solid var(--line)}
.spectrum .seg{height:100%}
.legend{display:flex;flex-wrap:wrap;gap:4px 20px;margin:13px 0 26px;padding:0;list-style:none}
.legend li{display:flex;align-items:center;gap:7px;font-size:13px;cursor:pointer;
  font-family:var(--mono);color:var(--ink);background:none;border:0;padding:2px 0}
.legend li:hover{color:var(--magenta)}
.legend .sw{width:11px;height:11px;border-radius:2px;flex:0 0 auto}
.legend .pc{color:var(--soft);font-size:12px}

/* tabs */
nav.tabs{position:sticky;top:0;z-index:3000;background:var(--paper);
  border-bottom:1px solid var(--line);display:flex;gap:2px}
nav.tabs button{appearance:none;background:none;border:0;cursor:pointer;
  font-family:var(--mono);font-size:13px;letter-spacing:.05em;color:var(--soft);
  padding:13px 16px;border-bottom:2px solid transparent;text-transform:uppercase}
nav.tabs button:hover{color:var(--ink)}
nav.tabs button[aria-selected="true"]{color:var(--magenta);border-bottom-color:var(--magenta)}

main{padding:28px 0 10px}
section.view{display:none}
section.view.active{display:block}

/* filter bar */
.filters{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:flex-end;
  padding:15px 16px;background:var(--card);border:1px solid var(--line);border-radius:5px;margin-bottom:22px}
.field{display:flex;flex-direction:column;gap:4px}
.field label{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--faint)}
select,input[type=text]{font-family:var(--sans);font-size:13.5px;color:var(--ink);
  background:var(--card2);border:1px solid var(--line);border-radius:4px;padding:7px 9px;min-width:128px}
input[type=range]{accent-color:var(--magenta)}
.count{margin-left:auto;font-family:var(--mono);font-size:12.5px;color:var(--soft);align-self:center}
.count b{color:var(--ink)}
.btn{font-family:var(--mono);font-size:12px;letter-spacing:.04em;cursor:pointer;
  background:var(--ink);color:#fff;border:0;border-radius:4px;padding:8px 13px}
.btn:hover{background:var(--magenta)}
.btn.ghost{background:none;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--card2);color:var(--magenta);border-color:var(--magenta)}

/* cards + charts */
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.card{grid-column:span 6;background:var(--card);border:1px solid var(--line);
  border-radius:6px;padding:17px 18px}
.card.wide{grid-column:span 12}
.card.third{grid-column:span 4}
.card.two-thirds{grid-column:span 8}
.card h3{margin:0 0 3px;font-size:14px;font-weight:600}
.card .note{font-family:var(--mono);font-size:11px;color:var(--faint);margin:0 0 14px}
.kpi{font-family:var(--mono);font-weight:600;font-size:34px;line-height:1;color:var(--ink)}
.kpi small{font-size:14px;color:var(--soft);font-weight:400;margin-left:6px}

.bar-row{display:grid;grid-template-columns:128px 1fr 84px;align-items:center;gap:10px;margin:6px 0}
.bar-row .bl{font-size:12.5px;color:var(--ink);font-family:var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-track{height:13px;background:var(--line2);border-radius:3px;overflow:hidden}
.bar-fill{height:100%;border-radius:3px}
.bar-row .bv{font-family:var(--mono);font-size:12px;color:var(--soft);text-align:right;white-space:nowrap}
.entry-method-card{grid-column:span 8}
.entry-method-card .bar-row{grid-template-columns:190px minmax(160px,1fr) 150px}
.entry-method-card .bar-row .bv{justify-self:end;text-align:right;font-variant-numeric:tabular-nums}
@media (max-width:760px){.entry-method-card{grid-column:span 12}.entry-method-card .bar-row{grid-template-columns:110px 1fr 108px}}


.stack{display:flex;height:15px;border-radius:3px;overflow:hidden;background:var(--line2)}
.stack .s{height:100%}
.stack-row{display:grid;grid-template-columns:96px 1fr 46px;align-items:center;gap:10px;margin:7px 0}
.stack-row .sl{font-family:var(--mono);font-size:12px}
.stack-row .sv{font-family:var(--mono);font-size:11.5px;color:var(--soft);text-align:right}
.minilegend{display:flex;flex-wrap:wrap;gap:5px 15px;margin:0 0 15px}
.minilegend span{display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11.5px;color:var(--soft)}
.minilegend i{width:10px;height:10px;border-radius:2px;display:inline-block}
.tri{display:grid;grid-template-columns:repeat(3,1fr);gap:14px 20px}
.tri h4{margin:0 0 2px;font-size:12.5px;font-weight:600}
.tri .note{margin:0 0 6px}
@media (max-width:760px){.tri{grid-template-columns:1fr}}
.colchart{display:flex;align-items:flex-end;gap:2px;width:100%;padding-top:6px}
.scatterwrap{margin-top:8px;width:100%}
.scatterwrap svg{display:block;max-width:560px;margin:0 auto}
.colchart .col{flex:1 1 0;min-width:0;display:flex;flex-direction:column;justify-content:flex-end;align-items:center}
.colchart .col-bar{width:100%;max-width:34px;border-radius:2px 2px 0 0;min-height:1px}
.colchart .col-lab{font:8.5px/1.1 'IBM Plex Mono',ui-monospace,monospace;color:#8b958d;margin-top:5px;text-align:center;white-space:nowrap}
#mf-tip{position:fixed;z-index:9999;pointer-events:none;opacity:0;transition:opacity .05s ease;background:#16222d;color:#f3f4ef;font:11px/1.35 'IBM Plex Mono',ui-monospace,monospace;padding:5px 8px;border-radius:5px;max-width:260px;box-shadow:0 4px 14px rgba(0,0,0,.18)}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px}
.duo h4{margin:0 0 2px;font-size:12.5px;font-weight:600}
.duo .note{margin:0 0 6px}
@media (max-width:760px){.duo{grid-template-columns:1fr}}
.mapbtns{display:flex;gap:6px;margin:2px 0 12px;flex-wrap:wrap}
.mapbtn{font:11px/1 'IBM Plex Mono',ui-monospace,monospace;color:#41506a;background:#eef0e8;border:1px solid #cfd2c6;border-radius:5px;padding:5px 10px;cursor:pointer}
.mapbtn.active{background:#16222d;color:#f3f4ef;border-color:#16222d}
.mapwrap > svg{width:100%;height:auto;display:block}
/* Do not let the old SVG-map rule resize Leaflet attribution/icons inside the map. */
.mapwrap .leaflet-container svg{width:auto;height:auto;display:inline}
.maplegend{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:10px;font:10.5px 'IBM Plex Mono',ui-monospace,monospace;color:#8b958d}
.maplegend .bar{display:inline-block;width:120px;height:9px;border-radius:2px;vertical-align:middle;margin:0 6px}
.maplegend .dot{display:inline-block;border-radius:50%;background:#9aa097;vertical-align:middle;margin:0 4px}

.leafmap{width:100%;height:min(62vh,560px);min-height:380px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#e9ece5}
.leafmap.small{height:310px;min-height:260px}
/* Clickable airport codes -> aerodrome page */
.aplink{color:inherit;text-decoration:none;border-bottom:1px dotted rgba(22,34,45,.35);cursor:pointer}
.aplink:hover{color:var(--magenta);border-bottom-color:var(--magenta)}
.mf-map-popup .aplink{display:inline-block;margin-top:5px;color:var(--magenta);border-bottom:0;font-weight:600}
/* Keep Leaflet inside the card and below the sticky nav. */
.mapwrap{position:relative;z-index:0;overflow:hidden}
.card.wide{overflow:hidden}
.leafmap{position:relative;z-index:0}
.leaflet-container{font-family:var(--sans);background:#e9ece5;z-index:0}
.leaflet-pane,.leaflet-top,.leaflet-bottom{z-index:0!important}
.leaflet-popup-pane{z-index:20!important}
.leaflet-tooltip-pane{z-index:15!important}
.leaflet-marker-pane{z-index:10!important}
.leaflet-tile-pane{z-index:0!important}
/* Keep CARTO tiles calm and avoid bright fallback/error tiles. */
.leaflet-tile-pane{filter:saturate(.72) contrast(.96) brightness(1.04);}
.leaflet-tile{background:transparent;}

.leaflet-control-attribution{display:none!important}
.leaflet-bottom.leaflet-right{display:none!important}
.mf-map-popup{font-family:var(--mono);font-size:11px;line-height:1.45;color:#16222d}
.mf-map-popup b{font-family:var(--sans);font-size:13px}
.mf-code-label{font-family:var(--mono);font-size:10px;color:#16222d;background:rgba(247,247,242,.78);border:1px solid rgba(22,34,45,.2);box-shadow:none;padding:1px 4px}
/* Leaflet divIcon bubble markers. Leaflet's default .leaflet-div-icon is a white square,
   so explicitly neutralize it and make the inner bubble visible. */
.mf-bubble-icon{background:transparent!important;border:0!important;box-shadow:none!important;overflow:visible!important}
.mf-bubble{display:block;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:999px;border:1.7px solid rgba(22,34,45,.88);box-shadow:0 1px 5px rgba(22,34,45,.26);opacity:.92}
.mf-bubble.mf-freq-mf{border-style:solid}
.mf-bubble.mf-freq-atf{border-style:dashed}
.mf-bubble-label{display:block;position:absolute;left:50%;top:-8px;transform:translate(-50%,-100%);font-family:var(--mono);font-size:11px;line-height:1;color:#16222d;background:rgba(247,247,242,.92);border:1px solid rgba(22,34,45,.18);border-radius:4px;padding:3px 5px;white-space:nowrap;box-shadow:0 1px 3px rgba(22,34,45,.10)}
@media (max-width:760px){.leafmap{height:420px}.leafmap.small{height:280px}}

.donutwrap{display:flex;align-items:center;gap:20px}
.donut-legend{font-family:var(--mono);font-size:12px;line-height:1.9}
.donut-legend .sw{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:7px}

/* table */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:6px;background:var(--card2)}
table{border-collapse:collapse;width:100%;font-size:13px}
th{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--soft);text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);
  white-space:nowrap;cursor:pointer;user-select:none;background:var(--card)}
th:hover{color:var(--ink)}
th .ar{color:var(--magenta)}
td{padding:9px 12px;border-bottom:1px solid var(--line2);white-space:nowrap}
tr:last-child td{border-bottom:0}
.mono{font-family:var(--mono)}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:7px;vertical-align:middle}
.pill{font-family:var(--mono);font-size:11px;padding:2px 8px;border-radius:20px;display:inline-block}
.pill.good{background:rgba(62,138,90,.13);color:var(--good)}
.pill.bad{background:rgba(192,57,43,.12);color:var(--bad)}
.pill.na{background:rgba(140,140,140,.12);color:var(--na)}
.pager{display:flex;align-items:center;gap:14px;justify-content:center;margin:18px 0;
  font-family:var(--mono);font-size:12.5px;color:var(--soft)}

/* aerodrome overview */
.ap-pick{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:22px}
.ap-pick button{font-family:var(--mono);font-size:12px;cursor:pointer;background:var(--card2);
  border:1px solid var(--line);border-radius:4px;padding:6px 9px;color:var(--ink)}
.ap-pick button:hover{border-color:var(--magenta);color:var(--magenta)}
.ap-pick button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.ap-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:14px;margin-bottom:4px}
.ap-code{font-family:var(--mono);font-weight:600;font-size:30px;letter-spacing:.08em}
.ap-name{font-size:17px;color:var(--soft)}
.badge{font-family:var(--mono);font-size:11px;border:1px solid var(--line);border-radius:3px;
  padding:2px 8px;color:var(--soft)}
.badge.mf{color:var(--magenta);border-color:var(--magenta)}
.meta-row{font-family:var(--mono);font-size:12px;color:var(--soft);margin:2px 0 20px}
.meta-row span{margin-right:18px}

footer{border-top:1px solid var(--line);margin-top:40px;padding:24px 0 50px;
  font-size:12.5px;color:var(--soft)}
footer .mono{font-size:11.5px;color:var(--faint)}
footer .caveat{color:var(--bad)}

@media (max-width:760px){
  .card,.card.third,.card.two-thirds{grid-column:span 12}
  .bar-row{grid-template-columns:84px 1fr 80px}
  .count{width:100%;margin:4px 0 0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}