*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0d1117;--bg2:#161b22;--bg3:#1c2230;--panel:#1a2032;
  --border:#2a3347;--border2:#3a4560;
  --text:#e6edf3;--muted:#8b949e;
  --accent:#3b82f6;--accent2:#60a5fa;
  --green:#22c55e;--amber:#f59e0b;--red:#ef4444;--purple:#a855f7;
  --radius:10px;--font:'DM Sans',sans-serif;--mono:'DM Mono',monospace;
}
html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5;overflow:hidden}

/* ── App shell ── */
#app{display:flex;flex-direction:column;height:100vh;overflow:hidden}
#topbar{
  display:flex;align-items:center;gap:16px;padding:0 20px;
  height:52px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0;
}
#topbar h1{font-size:15px;font-weight:600;letter-spacing:-.01em;white-space:nowrap}
#topbar h1 span{color:var(--accent2)}
.tab-bar{display:flex;gap:4px;margin-left:auto}
.tab{
  padding:5px 14px;border-radius:6px;border:none;background:transparent;
  color:var(--muted);font-family:var(--font);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;
}
.tab:hover{color:var(--text);background:var(--border)}
.tab.active{background:var(--accent);color:#fff}

/* ── Map view ── */
#main{display:flex;flex:1;overflow:hidden;min-height:0}

/* sidebar */
#sidebar{
  width:300px;flex-shrink:0;background:var(--panel);
  border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0;
}
.sidebar-inner{flex:1;min-height:0;overflow-y:auto;padding:16px 16px 8px}
.sidebar-inner::-webkit-scrollbar{width:4px}
.sidebar-inner::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px}

.section{margin-bottom:18px}
.section-label{
  font-size:11px;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--muted);margin:0 0 10px;
}
.field{margin-bottom:10px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.field input[type=number],.field input[type=text],.field select{
  width:100%;padding:7px 10px;background:var(--bg3);border:1px solid var(--border);
  border-radius:6px;color:var(--text);font-family:var(--font);font-size:13px;outline:none;transition:border .15s;
}
.field input:focus,.field select:focus{border-color:var(--accent)}
.field input[type=range]{width:100%;accent-color:var(--accent);cursor:pointer;margin-top:4px}
.range-row{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-top:3px}

.toggle-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:6px 0;border-bottom:1px solid var(--border);
}
.toggle-row:last-child{border-bottom:none}
.toggle-label{font-size:13px}
.toggle-sub{font-size:11px;color:var(--muted);margin-top:1px}
.switch{position:relative;display:inline-block;width:34px;height:19px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.slider-sw{
  position:absolute;inset:0;background:var(--border2);border-radius:10px;
  cursor:pointer;transition:background .2s;
}
.slider-sw::before{
  content:'';position:absolute;width:13px;height:13px;left:3px;bottom:3px;
  background:#fff;border-radius:50%;transition:transform .2s;
}
.switch input:checked+.slider-sw{background:var(--accent)}
.switch input:checked+.slider-sw::before{transform:translateX(15px)}

.btn{
  width:100%;padding:9px;border:none;border-radius:7px;
  font-family:var(--font);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent2)}
.btn-primary:disabled{background:var(--border2);color:var(--muted);cursor:not-allowed}
.btn-secondary{background:var(--bg3);color:var(--muted);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--border2);color:var(--text)}
.btn-danger{background:transparent;color:var(--red);border:1px solid var(--border);margin-top:8px}
.btn-danger:hover{border-color:var(--red)}
.btn-sm{width:auto;padding:5px 12px;font-size:12px}

/* points list */
#points-list{display:flex;flex-direction:column;gap:6px}
.point-card{
  background:var(--bg3);border:1px solid var(--border);border-radius:7px;
  padding:8px 10px;display:flex;align-items:center;gap:8px;transition:border .15s;
}
.point-card:hover{border-color:var(--border2)}
.point-badge{
  width:22px;height:22px;border-radius:5px;background:var(--accent);
  color:#fff;font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.point-info{flex:1;min-width:0}
.point-name{font-size:12px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.point-coords{font-family:var(--mono);font-size:10px;color:var(--muted)}
.point-status{font-size:10px;margin-top:1px}
.point-status.cached{color:var(--green)}
.point-status.new{color:var(--amber)}
.point-remove{
  width:20px;height:20px;border:none;background:transparent;color:var(--muted);
  cursor:pointer;font-size:16px;line-height:1;border-radius:4px;
  display:flex;align-items:center;justify-content:center;transition:all .15s;
}
.point-remove:hover{background:var(--red);color:#fff}

/* map */
#map-wrap{flex:1;position:relative}
#map{width:100%;height:100%}
.map-hint{
  position:absolute;top:12px;left:50%;transform:translateX(-50%);
  background:rgba(13,17,23,.85);backdrop-filter:blur(6px);
  border:1px solid var(--border);border-radius:8px;
  padding:8px 14px;font-size:12px;color:var(--muted);pointer-events:none;white-space:nowrap;
}
.map-hint b{color:var(--text)}

/* status bar */
#statusbar{
  position:absolute;bottom:12px;left:50%;transform:translateX(-50%);
  background:rgba(13,17,23,.9);backdrop-filter:blur(6px);
  border:1px solid var(--border);border-radius:8px;
  padding:8px 16px;font-size:12px;display:flex;align-items:center;gap:8px;
  transition:opacity .3s;pointer-events:none;
}
#statusbar.hidden{opacity:0}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 1.2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}
.pulse.green{background:var(--green)}.pulse.amber{background:var(--amber)}.pulse.red{background:var(--red)}

/* ── Results panel ── */
#results-panel{display:none;flex-direction:column;flex:1;overflow:hidden;min-height:0}
#results-panel.active{display:flex}
.results-topbar{
  padding:10px 20px;background:var(--bg2);border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:10px;flex-shrink:0;flex-wrap:wrap;
}
.results-topbar select{
  padding:5px 10px;background:var(--bg3);border:1px solid var(--border);
  border-radius:6px;color:var(--text);font-family:var(--font);font-size:13px;
}
.results-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}
.results-body::-webkit-scrollbar{width:4px}
.results-body::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px}

/* stat grid */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.stat-card .label{font-size:11px;color:var(--muted);margin-bottom:4px}
.stat-card .value{font-size:22px;font-weight:600;letter-spacing:-.02em}
.stat-card .sub{font-size:11px;color:var(--muted);margin-top:2px}

/* chart */
.chart-wrap{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.chart-title{font-size:13px;font-weight:500;margin-bottom:14px}
#bar-chart{display:flex;flex-direction:column;gap:8px}
.bar-row{display:flex;align-items:center;gap:10px}
.bar-name{width:160px;flex-shrink:0;font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:right}
.bar-track{flex:1;height:22px;background:var(--bg3);border-radius:4px;overflow:hidden;position:relative}
.bar-fill{height:100%;background:var(--accent);border-radius:4px;transition:width .5s ease;display:flex;align-items:center;justify-content:flex-end;padding-right:6px}
.bar-fill .bar-val{font-size:11px;font-weight:500;color:#fff;font-family:var(--mono)}
.bar-london{position:absolute;top:0;bottom:0;width:2px;background:var(--amber);opacity:.7}

/* table */
.table-wrap{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
table{width:100%;border-collapse:collapse}
thead th{
  padding:10px 14px;text-align:left;font-size:11px;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;color:var(--muted);
  background:var(--bg3);border-bottom:1px solid var(--border);white-space:nowrap;
}
tbody td{padding:9px 14px;border-bottom:1px solid var(--border);font-size:12px}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:var(--bg3)}
.mono{font-family:var(--mono)}
.z-pos{color:var(--green)}.z-neg{color:var(--red)}.z-neu{color:var(--muted)}

/* comparison mini-charts */
.compare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.mini-chart{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.mini-chart h3{font-size:13px;font-weight:500;margin-bottom:10px}
.mini-row{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.mini-name{width:110px;flex-shrink:0;font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mini-track{flex:1;height:18px;background:var(--bg3);border-radius:4px;overflow:hidden;position:relative}
.mini-fill{height:100%;border-radius:4px;background:var(--amber)}
.mini-label{position:absolute;right:5px;top:50%;transform:translateY(-50%);font-size:10px;font-family:var(--mono);color:#fff}

/* population pyramid */
.pyramid-wrap{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.pyramid-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:12px}
.pyramid-title{font-size:13px;font-weight:500}
.pyramid-sub{font-size:11px;color:var(--muted)}
.pyramid-select{padding:5px 10px;background:var(--bg3);border:1px solid var(--border);border-radius:6px;color:var(--text);font-family:var(--font);font-size:12px}
.pyramid-legend{display:grid;grid-template-columns:1fr 72px 1fr;gap:8px;font-size:11px;color:var(--muted);margin-bottom:8px}
.pyramid-legend .left{text-align:right}.pyramid-legend .center{text-align:center}
.pyramid-chart{display:flex;flex-direction:column;gap:8px}
.pyramid-row{display:grid;grid-template-columns:1fr 72px 1fr;gap:8px;align-items:center}
.pyramid-side{position:relative;height:20px;background:var(--bg3);border-radius:4px;overflow:visible}
.pyramid-ref-line{position:absolute;top:2px;bottom:2px;width:2px;border-radius:1px;background:rgba(251,191,36,0.75);pointer-events:none;z-index:2}
.pyramid-side.left{display:flex;justify-content:flex-end}
.pyramid-side.right{display:flex;justify-content:flex-start}
.pyramid-bar{height:100%}
.pyramid-bar.left{background:var(--amber)}.pyramid-bar.right{background:var(--accent)}
.pyramid-age{text-align:center;font-size:11px;color:var(--muted);font-family:var(--mono)}
.pyramid-value{position:absolute;top:50%;transform:translateY(-50%);font-size:10px;font-family:var(--mono);color:#fff}
.pyramid-value.left{left:5px}.pyramid-value.right{right:5px}

/* results map */
#results-map{width:100%;height:340px;border-radius:var(--radius);overflow:hidden}

/* log */
details summary{font-size:12px;color:var(--muted);cursor:pointer;padding:6px 0;list-style:none;display:flex;align-items:center;gap:6px}
details summary::before{content:'▶';font-size:9px;transition:transform .2s}
details[open] summary::before{transform:rotate(90deg)}
#log-pre{
  background:var(--bg);border:1px solid var(--border);border-radius:6px;
  padding:12px;font-family:var(--mono);font-size:11px;color:var(--muted);
  white-space:pre-wrap;word-break:break-all;max-height:200px;overflow-y:auto;margin-top:8px;
}

/* ── Name modal ── */
#name-modal{
  display:none;position:fixed;inset:0;background:rgba(13,17,23,.75);
  backdrop-filter:blur(4px);z-index:300;align-items:center;justify-content:center;
}
#name-modal.active{display:flex}
.modal-box{
  background:var(--bg2);border:1px solid var(--border2);border-radius:12px;
  padding:24px;width:360px;max-width:92vw;
}
.modal-box h2{font-size:15px;font-weight:600;margin-bottom:6px}
.modal-box p{font-size:12px;color:var(--muted);margin-bottom:16px}
.modal-coords{
  font-family:var(--mono);font-size:11px;color:var(--muted);
  background:var(--bg3);border:1px solid var(--border);border-radius:6px;
  padding:6px 10px;margin-bottom:14px;
}
#modal-name-input{
  width:100%;padding:9px 12px;background:var(--bg3);border:1px solid var(--border);
  border-radius:7px;color:var(--text);font-family:var(--font);font-size:14px;
  outline:none;transition:border .15s;margin-bottom:6px;
}
#modal-name-input:focus{border-color:var(--accent)}
#modal-name-input.error{border-color:var(--red)}
#modal-error{font-size:12px;color:var(--red);min-height:18px;margin-bottom:12px}
.modal-actions{display:flex;gap:8px}
.modal-actions .btn{flex:1}

/* ── Processing overlay ── */
#processing-overlay{
  display:none;position:fixed;inset:0;background:rgba(13,17,23,.8);
  backdrop-filter:blur(4px);z-index:100;
  flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
#processing-overlay.active{display:flex}
.spinner{width:40px;height:40px;border:3px solid var(--border2);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
#proc-status{font-size:14px;color:var(--text)}
#proc-sub{font-size:12px;color:var(--muted);font-family:var(--mono)}
#proc-cancel{
  margin-top:6px;padding:7px 18px;background:transparent;border:1px solid var(--border2);
  color:var(--muted);border-radius:6px;font-family:var(--font);font-size:13px;cursor:pointer;
}
#proc-cancel:hover{border-color:var(--red);color:var(--red)}

/* ── Notification ── */
#notif{
  position:fixed;top:60px;right:20px;z-index:400;
  background:var(--bg2);border:1px solid var(--border);border-radius:8px;
  padding:10px 14px;font-size:13px;max-width:320px;
  transform:translateX(360px);transition:transform .25s;pointer-events:none;
}
#notif.show{transform:translateX(0);pointer-events:auto}
#notif.success{border-color:var(--green);color:var(--green)}
#notif.error{border-color:var(--red);color:var(--red)}
#notif.info{border-color:var(--accent);color:var(--accent2)}

/* MapLibre popup */
.maplibregl-popup-content{
  background:var(--bg2)!important;border:1px solid var(--border)!important;
  border-radius:8px!important;color:var(--text)!important;
  font-family:var(--font)!important;font-size:12px!important;
  padding:10px 12px!important;box-shadow:0 8px 24px rgba(0,0,0,.4)!important;
}
.maplibregl-popup-tip{border-top-color:var(--bg2)!important}
.popup-title{font-weight:600;margin-bottom:4px}
.popup-row{color:var(--muted);margin:2px 0}
.popup-row span{color:var(--accent2);font-family:var(--mono)}
.popup-hint{font-size:11px;color:var(--border2);margin-top:6px;font-style:italic}

/* metric type toggle */
.type-group{display:flex;border:1px solid var(--border);border-radius:6px;overflow:hidden;flex-shrink:0}
.type-btn{
  padding:4px 11px;border:none;background:transparent;
  color:var(--muted);font-family:var(--font);font-size:12px;font-weight:500;cursor:pointer;
  transition:all .15s;border-right:1px solid var(--border);white-space:nowrap;
}
.type-btn:last-child{border-right:none}
.type-btn:hover{color:var(--text);background:var(--bg3)}
.type-btn.active{background:var(--accent);color:#fff}

/* points summary (dashboard) */
#points-summary:not(:empty){margin-bottom:0}
.points-summary-title{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.points-summary-grid{display:flex;flex-wrap:wrap;gap:10px}
.point-summary-card{
  background:var(--panel);border:1px solid var(--border);border-radius:8px;
  padding:10px 14px;min-width:150px;flex:1;
}
.pscard-name{font-size:13px;font-weight:500;margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pscard-stats{display:flex;gap:14px;flex-wrap:wrap}
.pscard-stat{font-size:11px;color:var(--muted)}
.pscard-val{color:var(--text);font-family:var(--mono);font-weight:500}

/* saved points select */
#saved-points-select{
  width:100%;min-height:80px;max-height:120px;background:var(--bg3);
  border:1px solid var(--border);border-radius:6px;color:var(--text);
  font-family:var(--mono);font-size:11px;padding:4px;
}
#saved-points-select option{padding:3px 4px}