:root{
  --ink:#EEF1F4;        /* page */
  --panel:#FFFFFF;
  --panel-2:#F3F5F8;
  --line:#D6DDE6;
  --text:#1B2430;
  --muted:#5C6B7D;
  --stream:#C8811A;     /* main migration stream */
  --counter:#1E8A8D;    /* counter-stream */
  --push:#C94B4B;       /* origin / push factors */
  --pull:#2E9463;       /* destination / pull factors */
  --step:#7E56C2;       /* intermediate town */
  --focus:#C8811A;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--ink);color:var(--text);
  font-family:"IBM Plex Sans",system-ui,sans-serif;font-size:14px;line-height:1.45}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

/* ---------- shell ---------- */
.app{display:grid;grid-template-rows:auto 1fr auto;height:100vh}
footer{border-top:2px solid var(--text);background:var(--panel);padding:8px 18px;font-size:12px;color:var(--muted);display:flex;gap:18px;flex-wrap:wrap;align-items:center}
footer a{color:var(--stream);text-decoration:none;font-weight:500}
footer a:hover{text-decoration:underline}
header{display:flex;align-items:center;gap:18px;padding:10px 18px;border-bottom:1px solid var(--line);background:var(--panel)}
.brand{display:flex;flex-direction:column;line-height:1.1}
.brand .kicker{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.brand h1{margin:2px 0 0;font-family:"Fraunces",serif;font-weight:500;font-size:22px;letter-spacing:-.01em;font-variation-settings:"opsz" 60,"SOFT" 40}
.brand h1 em{font-style:italic;color:var(--stream)}
.toolbar{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
select,.btn{background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:7px 11px;color:var(--text)}
.btn.primary{background:var(--stream);color:#FFFFFF;border-color:transparent;font-weight:600}
.btn.placing{border-color:var(--stream);color:var(--stream);box-shadow:0 0 0 2px rgba(200,129,26,.25)}
.btn.origin.placing{border-color:var(--push);color:var(--push);box-shadow:0 0 0 2px rgba(201,75,75,.25)}
.btn.dest.placing{border-color:var(--pull);color:var(--pull);box-shadow:0 0 0 2px rgba(46,148,99,.25)}

.layout{display:grid;grid-template-columns:400px 1fr 340px;min-height:0}
.panel{overflow-y:auto;background:var(--panel);border-right:1px solid var(--line);padding:16px}
.panel.right{border-right:0;border-left:1px solid var(--line)}
#viewDiv{min-height:320px}

h2{font-family:"Fraunces",serif;font-weight:500;font-size:17px;margin:0 0 10px;letter-spacing:-.01em;font-variation-settings:"opsz" 40}
h3{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 8px;font-weight:500}
section{margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
section:last-child{border-bottom:0}
.hint{color:var(--muted);font-size:12.5px;margin:4px 0 0}

/* ---------- balance beam (signature) ---------- */
.beam{position:relative;height:84px;margin:6px 0 4px}
.beam .track{position:absolute;left:0;right:0;top:24px;height:6px;border-radius:3px;
  background:linear-gradient(90deg,var(--push),#D6DDE6 50%,var(--pull))}
.beam .marker{position:absolute;top:12px;width:30px;height:30px;margin-left:-15px;border-radius:50%;
  background:#FFFFFF;border:3px solid var(--stream);transition:left .35s ease;display:grid;place-items:center;
  font-family:"IBM Plex Mono",monospace;font-size:10px;color:var(--stream)}
.beam .lbl{position:absolute;top:0;font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase}
.beam .lbl.l{left:0;color:var(--push)} .beam .lbl.r{right:0;color:var(--pull)}
.beam .read{position:absolute;top:52px;left:0;right:0;text-align:center;font-size:12.5px;color:var(--muted);line-height:1.3}

/* ---------- region cards ---------- */
.regions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.region{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:10px 10px 6px;border-top:3px solid var(--push)}
.region.dest{border-top-color:var(--pull)}
.region .name{width:100%;background:transparent;border:0;border-bottom:1px dashed var(--line);padding:2px 0 4px;font-family:"Fraunces",serif;font-size:15px;font-weight:500}
.region .country{font-size:11.5px;color:var(--muted);font-family:"IBM Plex Mono",monospace;margin:4px 0 8px;min-height:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.field{margin:8px 0}
.field .row{display:flex;justify-content:space-between;align-items:baseline;font-size:12px}
.field .row .val{font-family:"IBM Plex Mono",monospace;font-size:12px}
.field .tag{font-size:10px;padding:1px 6px;border-radius:99px;background:#E4E9EF;color:var(--muted);margin-left:5px;vertical-align:middle}
.field .tag.crisis{background:rgba(201,75,75,.14);color:var(--push)}
.field .tag.strong{background:rgba(46,148,99,.14);color:var(--pull)}
input[type=range]{width:100%;margin:4px 0 0;accent-color:var(--stream);height:20px}
.region.origin input[type=range]{accent-color:var(--push)}
.region.dest input[type=range]{accent-color:var(--pull)}

.field.adv{display:none}
body.show-adv .field.adv{display:block}
.advtoggle{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-top:10px;cursor:pointer}
.advtoggle input{accent-color:var(--stream)}
.link-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 12px;align-items:end}
.link-grid .field{margin:0}
.stat{font-family:"IBM Plex Mono",monospace;font-size:13px}
.stat small{color:var(--muted);display:block;font-family:"IBM Plex Sans",sans-serif;font-size:11.5px}

/* ---------- results ---------- */
.bignum{font-family:"Fraunces",serif;font-size:42px;font-weight:300;line-height:1;color:var(--stream);font-variation-settings:"opsz" 144}
.bignum small{font-size:13px;color:var(--muted);font-family:"IBM Plex Sans",sans-serif;display:block;margin-top:4px}
.bars{display:grid;gap:6px;margin-top:10px}
.bar{display:grid;grid-template-columns:110px 1fr 42px;gap:8px;align-items:center;font-size:12px}
.bar .track{height:8px;background:#E4E9EF;border-radius:4px;overflow:hidden;position:relative}
.bar .fill{height:100%;border-radius:4px;transition:width .3s}
.bar .n{font-family:"IBM Plex Mono",monospace;text-align:right;font-size:11.5px}
.split{display:flex;height:10px;border-radius:5px;overflow:hidden;margin:8px 0 4px}
.split div{transition:width .3s}
.legend{display:flex;gap:14px;font-size:11.5px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px;vertical-align:-1px}
.profile{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.profile .stat{background:var(--panel-2);border-radius:8px;padding:8px 10px}
.empty{color:var(--muted);font-size:13px;padding:10px;border:1px dashed var(--line);border-radius:8px}

/* ---------- classification ---------- */
.cgroup{margin:10px 0}
.cgroup .q{font-size:12.5px;color:var(--muted);margin-bottom:5px}
.choices{display:flex;gap:6px;flex-wrap:wrap}
.choice{background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:13px}
.choice[aria-pressed=true]{border-color:var(--stream);color:var(--stream)}
.verdict{font-size:12.5px;margin-top:6px;padding:8px 10px;border-radius:8px;background:var(--panel-2);border-left:3px solid var(--line)}
.verdict.ok{border-left-color:var(--pull)} .verdict.no{border-left-color:var(--push)}

/* ---------- Ravenstein ---------- */
.laws{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.law{display:grid;grid-template-columns:14px 1fr;gap:9px;align-items:start;padding:7px 8px;border-radius:8px;background:var(--panel-2);opacity:.6}
.law.on{opacity:1}
.law .dot{width:10px;height:10px;border-radius:50%;background:#C5CDD8;margin-top:5px}
.law.on .dot{background:var(--stream);box-shadow:0 0 0 3px rgba(200,129,26,.2)}
.law b{font-weight:500;display:block;font-size:12.5px}
.law span{font-size:11.5px;color:var(--muted)}

details summary{cursor:pointer;color:var(--muted);font-size:12.5px}
details p{font-size:12.5px;color:var(--muted)}
code{font-family:"IBM Plex Mono",monospace;font-size:11.5px;background:var(--panel-2);padding:1px 4px;border-radius:4px}

/* map legend overlay */
.maplegend{position:absolute;left:12px;bottom:28px;background:rgba(255,255,255,.93);border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:11.5px;display:grid;gap:4px;pointer-events:none}
.maplegend i{display:inline-block;width:18px;height:3px;margin-right:7px;vertical-align:middle;border-radius:2px}
.maplegend i.pt{width:10px;height:10px;border-radius:50%}
.maphint{position:absolute;top:12px;left:50%;transform:translateX(-50%);background:var(--stream);color:#FFFFFF;padding:6px 12px;border-radius:99px;font-weight:600;font-size:13px;display:none}
.maphint.show{display:block}
.mapwrap{position:relative;min-height:320px}

@media (max-width:1100px){
  .layout{grid-template-columns:340px 1fr;grid-template-rows:1fr auto}
  .panel.right{grid-column:1/-1;border-left:0;border-top:1px solid var(--line);max-height:45vh}
}
@media (max-width:760px){
  .app{height:auto}
  .layout{grid-template-columns:1fr}
  .mapwrap{height:60vh}
  .panel{max-height:none}
}
@media (prefers-reduced-motion:reduce){ .beam .marker,.bar .fill,.split div{transition:none} }