:root{
  color-scheme: dark;
  --ink:#0a1214;
  --glass:rgba(12,22,25,.90);
  --glass-2:rgba(18,32,36,.94);
  --surface:#15262a;
  --surface-2:#1c3237;
  --line:#284245;
  --line-2:#35575b;
  --text:#e4ede8;
  --muted:#8fa7a0;
  --accent:#f2b632;       /* survey amber */
  --accent-ink:#1b1402;
  --cyan:#5fd0e6;         /* water / live */
  --good:#63c68f;
  --bad:#ec6a5e;
  --sans:"IBM Plex Sans Condensed","Arial Narrow",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --rail:64px;
  --panel:360px;
  --r:8px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--ink);color:var(--text);font:14px/1.45 var(--sans);overflow:hidden;-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

#app{position:relative;display:grid;height:100%;grid-template-columns:var(--rail) 1fr;grid-template-rows:1fr auto;grid-template-areas:"rail map" "rail status"}

/* ---------- rail ---------- */
#rail{grid-area:rail;display:flex;flex-direction:column;align-items:stretch;gap:2px;background:#081013;border-right:1px solid var(--line);padding:10px 6px;padding-top:calc(10px + env(safe-area-inset-top,0px));z-index:6}
#rail .logo{height:40px;display:grid;place-items:center;margin-bottom:8px}
#rail .logo span{width:26px;height:26px;border-radius:50%;border:2px solid var(--accent);position:relative;box-shadow:0 0 18px rgba(242,182,50,.25)}
#rail .logo span::before{content:"";position:absolute;inset:5px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#8fe6f5,#1b7f93)}
#rail button{display:flex;flex-direction:column;align-items:center;gap:3px;background:none;border:0;border-radius:var(--r);padding:8px 2px;color:var(--muted);cursor:pointer;position:relative}
#rail button b{font-size:10.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
#rail button:hover{color:var(--text);background:var(--surface)}
#rail button.on{color:var(--accent);background:var(--surface)}
#rail button.on::before{content:"";position:absolute;left:-6px;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--accent)}
#rail .grow{flex:1}

/* ---------- panel ---------- */
#panel{position:absolute;left:var(--rail);top:0;bottom:30px;width:var(--panel);background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-right:1px solid var(--line);z-index:5;display:flex;flex-direction:column;box-shadow:var(--shadow);animation:slide .18s ease-out}
@keyframes slide{from{transform:translateX(-12px);opacity:0}to{transform:none;opacity:1}}
#panel header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 10px;padding-top:calc(14px + env(safe-area-inset-top,0px));border-bottom:1px solid var(--line)}
#panel h2{margin:0;font-size:17px;font-weight:600;letter-spacing:.01em}
#panes{overflow:auto;flex:1;min-height:0}
.pane{display:none;padding:6px 16px 28px}
.pane.on{display:block}
button.icon{background:none;border:0;width:32px;height:32px;border-radius:6px;display:grid;place-items:center;color:var(--muted);cursor:pointer;padding:0}
button.icon:hover{background:var(--surface);color:var(--text)}

h3{font-size:11px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);margin:20px 0 8px;font-weight:600;display:flex;align-items:center;gap:8px}
h3 small{letter-spacing:.04em;text-transform:none;font-weight:400;color:#6d8781}
h3 input,h3 .mini{margin-left:auto}
h4{font-size:13px;margin:14px 0 6px;font-weight:600}
.hint{color:var(--muted);font-size:13px;margin:6px 0}
.hint.small{font-size:12px}
ul.plain{margin:0;padding-left:18px;color:var(--text)}
ul.plain li{margin:4px 0}
.row{display:flex;align-items:center;gap:8px;padding:5px 0;cursor:pointer}
.row select{margin-left:auto;max-width:55%}
select,input[type=text],input:not([type]),input[inputmode],textarea,input[type=search],input[type=password],input[type=date]{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:6px 8px;min-width:0}
select:hover,input:hover,textarea:hover{border-color:var(--line-2)}
textarea{width:100%;font-family:var(--mono);font-size:12px;resize:vertical}
input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px;flex:none}
input[type=range]{accent-color:var(--accent);width:100%}
input[type=color]{width:28px;height:24px;padding:0;border:1px solid var(--line);border-radius:4px;background:none}
.slider{display:block;margin:10px 0}
.slider output{float:right;font-family:var(--mono);font-size:12px;color:var(--muted)}
.stack{display:flex;flex-direction:column;gap:4px;margin:8px 0;font-size:13px}
.stack select,.stack input,.stack textarea{width:100%}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:8px 0}
.pair label{display:flex;flex-direction:column;gap:4px;font-size:13px}
.pair input,.pair select{width:100%;font-family:var(--mono)}
.units{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}
.units label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted)}
#pane-settings > select{width:100%}

button,.btnlike{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:7px 11px;cursor:pointer;text-decoration:none;display:inline-block;font-size:13px;color:var(--text)}
button:hover,.btnlike:hover{border-color:var(--line-2);background:var(--surface-2)}
button.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}
button.primary:hover{filter:brightness(1.06);background:var(--accent)}
button.danger{border-color:#6b2e2a;color:#ffb3ac}
button.mini{padding:4px 9px;font-size:12px}
.btnrow{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.btnrow.end{justify-content:flex-end}
.seg{display:flex;border:1px solid var(--line);border-radius:7px;overflow:hidden;margin:6px 0}
.seg.wrap{flex-wrap:wrap}
.seg button{flex:1;border:0;border-radius:0;border-right:1px solid var(--line);background:none;padding:7px 6px;white-space:nowrap}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--accent);color:var(--accent-ink);font-weight:600}
.srcbox{margin:6px 0 4px}

.basegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.basegrid button{display:flex;flex-direction:column;gap:5px;align-items:stretch;padding:5px;font-size:12px;text-align:center}
.basegrid button.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.thumb{display:block;height:44px;border-radius:5px;background-size:cover;background-position:center}
.t-sat{background:linear-gradient(135deg,#27402a 0%,#3f5a35 35%,#1f4a57 36%,#153540 100%)}
.t-streets{background:linear-gradient(135deg,#f2efe9 0 40%,#fff 40% 44%,#e8e4da 44% 70%,#aad3df 70%)}
.t-topo{background:repeating-radial-gradient(circle at 30% 60%,#e7ecd9 0 5px,#c9d6ad 5px 6px)}
.t-esritopo{background:repeating-radial-gradient(circle at 70% 40%,#efe9dc 0 6px,#d6c9a8 6px 7px)}
.t-dark{background:linear-gradient(135deg,#1b1f22 0 45%,#2c3236 45% 48%,#15191b 48%)}
.t-s2{background:linear-gradient(135deg,#4a5d38 0 40%,#6b7d4c 40% 60%,#2d5663 60%)}

.toolgrid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.toolgrid button{text-align:left;display:flex;flex-direction:column;gap:2px;padding:8px 10px}
.toolgrid button span{font-size:11px;color:var(--muted)}
.toolgrid button.on{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}

.readout{font-family:var(--mono);font-size:12px;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:8px 10px;margin:8px 0;white-space:pre-wrap;font-variant-numeric:tabular-nums}
.tablewrap{overflow-x:auto;margin:8px 0}
table{border-collapse:collapse;width:100%;font-size:12px}
td,th{border-bottom:1px solid var(--line);padding:5px 6px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:500}
td.num{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
td button{padding:1px 6px;font-size:11px}
table.keys td:first-child{white-space:nowrap;width:40%}
kbd{font-family:var(--mono);font-size:11px;background:var(--surface-2);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:4px;padding:1px 5px}

details{border-top:1px solid var(--line);padding:6px 0}
details:first-child{border-top:0}
summary{cursor:pointer;font-weight:600;padding:8px 0;list-style:none;display:flex;align-items:center;gap:8px}
summary::-webkit-details-marker{display:none}
summary::before{content:"▸";color:var(--accent);transition:transform .15s}
details[open] summary::before{transform:rotate(90deg)}

.list{list-style:none;margin:0;padding:0}
.list li{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid var(--line)}
.list li .sw{width:12px;height:12px;border-radius:3px;flex:none;border:1px solid #0006}
.list li .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}
.list li .nm small{color:var(--muted);margin-left:6px}
.list li .acts{display:flex;gap:3px;flex:none}
.list li .acts button{padding:2px 6px;font-size:11px;line-height:1.3}
.list li .acts button svg{width:14px;height:14px;vertical-align:-2px}
.list li.sel{background:linear-gradient(90deg,rgba(242,182,50,.14),transparent)}
.list li.layer{flex-wrap:wrap}
.list li.layer .op{flex-basis:100%;display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted);padding-left:24px}
.list li.layer .op input{flex:1}
.stops li{counter-increment:s}
.stops li::before{content:counter(s);font-family:var(--mono);color:var(--accent);width:18px}
.legend{display:flex;flex-direction:column;gap:3px;margin:8px 0;font-size:12px}
.legend .bar{height:10px;border-radius:3px}
.legend .ticks{display:flex;justify-content:space-between;color:var(--muted);font-family:var(--mono);font-size:10.5px}
.legend .item{display:flex;align-items:center;gap:6px}
.legend .item i{width:14px;height:10px;border-radius:2px}

.filebtn{display:inline-block;background:var(--accent);color:var(--accent-ink);font-weight:600;border-radius:6px;padding:8px 13px;cursor:pointer}
.filebtn input{display:none}

/* ---------- map area ---------- */
#mapwrap{grid-area:map;position:relative;min-height:0;min-width:0;overflow:hidden}
#map,#mapB{position:absolute;inset:0}
#mapB{pointer-events:none;z-index:1}
#mapwrap.side #map{right:50%}
#mapwrap.side #mapB{left:50%}
#mapwrap.side::after{content:"";position:absolute;top:0;bottom:0;left:50%;width:2px;background:var(--accent);z-index:2}
#swipe{position:absolute;top:0;bottom:0;width:4px;background:var(--accent);z-index:2;cursor:ew-resize;transform:translateX(-2px);touch-action:none}
#swipe .knob{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--accent);color:var(--accent-ink);border-radius:14px;padding:5px 9px;font-size:11px;white-space:nowrap;font-weight:700}
#lensRing{position:absolute;width:280px;height:280px;border-radius:50%;border:3px solid var(--accent);z-index:2;pointer-events:none;transform:translate(-50%,-50%);box-shadow:0 0 0 2000px rgba(0,0,0,.08)}

#searchForm{position:absolute;top:calc(12px + env(safe-area-inset-top,0px));left:12px;width:min(420px,calc(100% - 90px));z-index:4}
#mapwrap.panelopen #searchForm{left:calc(var(--panel) + 12px);width:min(380px,calc(100% - var(--panel) - 90px))}
#searchForm .si{position:absolute;left:12px;top:11px;color:var(--muted);width:18px;height:18px}
#searchInput{width:100%;background:var(--glass-2);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:22px;padding:10px 14px 10px 38px;box-shadow:var(--shadow);font-size:14px}
#searchResults{margin-top:6px;background:var(--glass-2);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:12px;max-height:55vh;overflow:auto;box-shadow:var(--shadow)}
#searchResults button{display:block;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:9px 14px;cursor:pointer}
#searchResults button:last-child{border-bottom:0}
#searchResults button:hover,#searchResults button:focus{background:var(--surface)}
#searchResults small{display:block;color:var(--muted)}

#rightCtrls{position:absolute;right:12px;top:150px;display:flex;flex-direction:column;gap:8px;z-index:3}
.fab{width:40px;height:40px;border-radius:50%;background:var(--glass-2);border:1px solid var(--line);display:grid;place-items:center;padding:0;box-shadow:var(--shadow);font-weight:700;font-size:12px;letter-spacing:.03em}
.fab.on{color:var(--accent);border-color:var(--accent)}
.fab.live{color:var(--cyan);border-color:var(--cyan)}

#baseQuick{position:absolute;left:12px;bottom:14px;z-index:3;width:74px;height:74px;padding:0;border-radius:10px;overflow:hidden;border:2px solid rgba(255,255,255,.85);box-shadow:var(--shadow);background:var(--surface)}
#mapwrap.panelopen #baseQuick{left:calc(var(--panel) + 12px)}
#baseQuick .thumb{height:100%;border-radius:0}
#baseQuick span{position:absolute;left:0;right:0;bottom:0;font-size:11px;font-weight:600;background:linear-gradient(transparent,rgba(0,0,0,.75));color:#fff;padding:12px 4px 4px}

#histBadge{position:absolute;right:64px;top:14px;z-index:3;background:var(--glass-2);border:1px solid var(--accent);border-radius:16px;padding:5px 12px;font-family:var(--mono);font-size:12px;white-space:nowrap}
.hud.nav{top:auto;bottom:110px;border-color:var(--accent)}
.hud{position:absolute;right:62px;top:150px;z-index:3;background:var(--glass-2);border:1px solid var(--cyan);border-radius:8px;padding:8px 10px;font-family:var(--mono);font-size:11.5px;white-space:pre;box-shadow:var(--shadow)}
#printFrame{position:absolute;z-index:2;border:2px dashed var(--accent);box-shadow:0 0 0 4000px rgba(0,0,0,.35);pointer-events:none}

#dock{position:absolute;left:12px;right:64px;bottom:14px;z-index:4;background:var(--glass-2);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);max-height:46%;display:flex;flex-direction:column}
#mapwrap.panelopen #dock{left:calc(var(--panel) + 12px)}
#dock header{display:flex;align-items:center;gap:12px;padding:8px 8px 4px 14px}
#dock header b{font-size:13px}
#dock header span{flex:1;font-family:var(--mono);font-size:11.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#dockBody{padding:0 12px 10px;overflow:auto}
#dockBody svg.chart{width:100%;height:170px;display:block}
#timeDock{position:absolute;left:50%;transform:translateX(-50%);bottom:18px;width:min(640px,calc(100% - 200px));z-index:4;background:var(--glass-2);border:1px solid var(--accent);border-radius:24px;padding:6px 10px;display:flex;align-items:center;gap:10px;box-shadow:var(--shadow)}
#mapwrap.panelopen #timeDock{left:calc(50% + var(--panel) / 2);width:min(560px,calc(100% - var(--panel) - 220px))}
#mapwrap.panelopen #toast{left:calc(50% + var(--panel) / 2)}
#timeDock input{flex:1}
#timeDock b{font-family:var(--mono);font-size:12px;min-width:92px;text-align:right}

#toast{position:absolute;left:50%;top:66px;transform:translateX(-50%);background:var(--glass-2);border:1px solid var(--line);border-radius:10px;padding:9px 14px;z-index:7;box-shadow:var(--shadow);max-width:90%;display:flex;gap:8px;align-items:center}
#dropzone{position:absolute;inset:12px;border:2px dashed var(--accent);border-radius:14px;background:rgba(10,18,20,.8);display:grid;place-items:center;font-size:20px;z-index:8}

.maplibregl-ctrl-top-right{top:60px}
.maplibregl-ctrl-group{background:var(--glass-2)!important;border:1px solid var(--line);box-shadow:var(--shadow)!important;border-radius:10px!important}
.maplibregl-ctrl-group button{background-color:transparent!important;border-color:var(--line)!important;width:36px!important;height:36px!important}
.maplibregl-ctrl-group button .maplibregl-ctrl-icon{filter:invert(1) brightness(1.3)}
.maplibregl-ctrl-scale{background:rgba(10,18,20,.75)!important;color:var(--text)!important;border-color:var(--text)!important;font-family:var(--mono)}
.maplibregl-ctrl-attrib{background:rgba(10,18,20,.75)!important;color:var(--muted)}
.maplibregl-ctrl-attrib a{color:var(--muted)!important}
.maplibregl-ctrl-attrib-button{filter:invert(1)}
.maplibregl-popup-content{background:var(--glass-2);backdrop-filter:blur(10px);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:12px 14px;max-width:340px;font-size:13px;box-shadow:var(--shadow)}
.maplibregl-popup-tip{border-top-color:var(--line)!important;border-bottom-color:var(--line)!important}
.maplibregl-popup-close-button{color:var(--muted);font-size:18px;padding:2px 7px}
.pop h4{margin:0 0 4px;font-size:15px;padding-right:14px}
.pop .desc{color:var(--muted);max-height:140px;overflow:auto;margin:4px 0;white-space:pre-wrap}
.pop .xy{font-family:var(--mono);font-size:11px;color:var(--muted)}
.pop img{max-width:100%;border-radius:6px;margin:6px 0;display:block}
.pop table{margin:6px 0}
.pop .btnrow button{padding:3px 8px;font-size:12px}
.mapcursor-crosshair .maplibregl-canvas{cursor:crosshair}
.gps-dot{width:16px;height:16px;border-radius:50%;background:var(--cyan);border:3px solid #fff;box-shadow:0 0 0 6px rgba(95,208,230,.3)}

/* ---------- status ---------- */
#status{grid-area:status;display:flex;align-items:center;gap:14px;padding:5px 12px;padding-bottom:calc(5px + env(safe-area-inset-bottom,0px));background:#081013;border-top:1px solid var(--line);font-family:var(--mono);font-size:12px;overflow-x:auto;white-space:nowrap;font-variant-numeric:tabular-nums;z-index:6;height:30px}
#coordBtn{background:none;border:0;padding:0;font-family:var(--mono);color:var(--text);cursor:copy}
#coordCrs{font-family:var(--sans);font-size:12px;padding:1px 4px;max-width:210px}
#elevOut,#camOut{color:var(--muted)}
#imgDate{color:var(--accent)}
.ctxmenu{display:flex;flex-direction:column;min-width:210px}
.ctxmenu .xy{padding:2px 2px 6px;border-bottom:1px solid var(--line);margin-bottom:4px}
.ctxmenu button,.ctxmenu a{background:none;border:0;border-radius:6px;text-align:left;padding:6px 8px;font-size:13px;color:var(--text);text-decoration:none}
.ctxmenu button:hover,.ctxmenu a:hover{background:var(--surface)}

/* ---------- dialog ---------- */
dialog{background:var(--glass-2);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:18px;max-width:min(760px,94vw);width:100%;box-shadow:var(--shadow)}
dialog::backdrop{background:rgba(0,0,0,.6)}
dialog h2{margin:0 0 10px;font-size:17px}
#dlgBody{max-height:70vh;overflow:auto}

/* ---------- phone ---------- */
@media (max-width:760px){
  :root{--rail:0px;--panel:100%}
  #app{grid-template-columns:1fr;grid-template-rows:1fr auto auto;grid-template-areas:"map" "rail" "status"}
  #rail{flex-direction:row;overflow-x:auto;padding:4px;border-right:0;border-top:1px solid var(--line);gap:0}
  #rail .logo,#rail .grow{display:none}
  #rail button{min-width:64px}
  #rail button.on::before{left:8px;right:8px;top:-4px;bottom:auto;width:auto;height:3px}
  #panel{left:0;right:0;top:auto;bottom:92px;width:100%;height:50%;border-right:0;border-top:1px solid var(--line);border-radius:14px 14px 0 0;position:absolute}
  #mapwrap.panelopen #searchForm,#searchForm{left:12px;width:calc(100% - 70px)}
  #mapwrap.panelopen #baseQuick,#mapwrap.panelopen #dock{left:12px}
  #baseQuick{width:56px;height:56px}
  #rightCtrls{top:110px}
  #timeDock{width:calc(100% - 24px)}
  #status{font-size:11px}
  #camOut{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}