:root{
  /* Mapro brand blues, softened into pastels */
  --brand:#0077b2; --navy:#28318b;
  --ink:#1d2a5c; --ink-soft:#52628f;
  --b50:#f3f8fd; --b100:#e4f0fa; --b200:#cde4f6; --b300:#a9d0ee; --b400:#7db6e2; --b500:#4f9bd0;
  --glass:rgba(247,251,255,.74); --glass-edge:rgba(255,255,255,.7);
  --shadow:0 10px 30px rgba(40,49,139,.16), 0 2px 6px rgba(40,49,139,.08);
  --r:18px; --gap:14px;
  --font:"Heebo","Assistant","Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;background:var(--b100);font-family:var(--font);color:var(--ink)}
#gl{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab;outline:none}
#gl.drag{cursor:grabbing} #gl.tool{cursor:crosshair}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}

.glass{position:fixed;background:var(--glass);backdrop-filter:blur(16px) saturate(1.25);-webkit-backdrop-filter:blur(16px) saturate(1.25);
  border:1px solid var(--glass-edge);border-radius:var(--r);box-shadow:var(--shadow)}

/* brand */
.brand{top:var(--gap);right:var(--gap);display:flex;align-items:center;gap:12px;padding:8px 16px 8px 18px;max-width:min(420px,calc(100vw - 2*var(--gap)))}
.brand-logo{height:38px;width:auto;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-text strong{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text span{font-size:12.5px;color:var(--ink-soft)}

/* mode switch */
.mode-switch{top:var(--gap);left:50%;transform:translateX(-50%);display:flex;padding:4px;gap:2px}
.mode-switch button{display:flex;align-items:center;gap:7px;padding:8px 16px;border-radius:14px;font-size:14px;font-weight:500;color:var(--ink-soft);transition:.18s}
.mode-switch button svg{width:19px;height:19px}
.mode-switch button.on{background:linear-gradient(135deg,var(--brand),var(--navy));color:#fff;box-shadow:0 4px 12px rgba(40,49,139,.3)}
.mode-switch button:not(.on):hover{background:var(--b100)}

/* toolbar */
.toolbar{bottom:calc(var(--gap) + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:2px;padding:6px;max-width:calc(100vw - 2*var(--gap));overflow-x:auto;scrollbar-width:none}
.toolbar::-webkit-scrollbar{display:none}
.toolbar button{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:62px;padding:8px 10px;border-radius:13px;font-size:11.5px;font-weight:500;color:var(--ink-soft);transition:.16s}
.toolbar button svg{width:23px;height:23px}
.toolbar button:hover{background:var(--b100);color:var(--navy)}
.toolbar button.on{background:linear-gradient(135deg,var(--b300),var(--b400));color:var(--navy);box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.7),0 3px 10px rgba(79,155,208,.35)}
.toolbar .sep{width:1px;height:30px;background:var(--b200);margin:0 6px;flex:none}

/* minimap */
.minimap{bottom:calc(var(--gap) + env(safe-area-inset-bottom));left:var(--gap);width:190px;height:190px;padding:8px;overflow:hidden;
  transition:transform .2s}
.minimap svg{width:100%;height:100%;display:block;border-radius:12px;background:linear-gradient(160deg,#fbfdff,var(--b100));cursor:pointer}
.minimap-cap{position:absolute;bottom:12px;right:14px;font-size:11px;color:var(--ink-soft);pointer-events:none}

/* results */
.results{top:76px;left:var(--gap);width:300px;max-height:calc(100vh - 340px);padding:12px 14px;overflow:auto}
.results header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.results ol{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.results li{background:rgba(255,255,255,.7);border:1px solid var(--b200);border-radius:12px;padding:8px 10px;font-size:13px;line-height:1.55}
.results li b{font-size:15px;color:var(--navy);font-weight:700}
.results li small{color:var(--ink-soft);display:block}
.results .x{float:left;color:var(--ink-soft);font-size:15px;line-height:1}
.link{color:var(--brand);font-size:12.5px;font-weight:500}

/* hint + toast */
.hint,.toast{left:50%;transform:translateX(-50%);padding:9px 18px;font-size:13.5px;border-radius:999px;white-space:nowrap;max-width:calc(100vw - 28px);overflow:hidden;text-overflow:ellipsis}
.hint{bottom:calc(var(--gap) + 92px)}
.toast{top:72px;background:linear-gradient(135deg,var(--brand),var(--navy));color:#fff;border-color:transparent}
[hidden]{display:none!important}

/* loader */
.loader{position:fixed;inset:0;z-index:20;background:linear-gradient(160deg,#fbfdff,var(--b200));display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;transition:opacity .5s,visibility .5s}
.loader.gone{opacity:0;visibility:hidden}
.loader img{width:150px;height:auto}
.loader .bar{width:200px;height:5px;background:var(--b200);border-radius:9px;overflow:hidden}
.loader .bar i{display:block;height:100%;width:8%;background:linear-gradient(90deg,var(--brand),var(--navy));border-radius:9px;transition:width .3s}
.loader span{font-size:13px;color:var(--ink-soft)}

/* floating labels drawn over the canvas (measure values, scene names) */
.tag{position:fixed;z-index:5;pointer-events:none;transform:translate(-50%,-135%);background:#fff;color:var(--navy);font-weight:700;font-size:13px;padding:3px 9px;border-radius:999px;box-shadow:0 3px 10px rgba(40,49,139,.25);border:1.5px solid var(--b300);white-space:nowrap}

@media (max-width:720px){
  :root{--gap:10px}
  .brand-logo{height:30px}.brand{padding:6px 12px}
  .brand-text strong{font-size:13px}
  .mode-switch{top:auto;bottom:calc(var(--gap) + 86px + env(safe-area-inset-bottom))}
  .mode-switch button{padding:7px 12px;font-size:13px}
  .minimap{width:112px;height:112px;padding:5px;top:calc(var(--gap) + 58px);bottom:auto;left:var(--gap)}
  .minimap-cap{display:none}
  .toolbar button{min-width:52px;padding:7px 6px}.toolbar button span{font-size:10.5px}
  .results{top:auto;bottom:calc(var(--gap) + 140px);left:var(--gap);right:var(--gap);width:auto;max-height:28vh}
  .hint{bottom:calc(var(--gap) + 140px)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* ------------------------------------------------------------ labels */
#label-layer{position:fixed;inset:0;z-index:4;pointer-events:none;overflow:hidden}
.tool-active #label-layer .lbl{pointer-events:none}
.lbl{position:fixed;left:0;top:0;pointer-events:auto;display:flex;align-items:center;gap:6px;padding:3px 10px 3px 8px;font-size:12.5px;font-weight:600;color:var(--ink);
  background:rgba(255,255,255,.88);border:1.5px solid color-mix(in srgb,var(--c) 55%,#fff);border-radius:999px;box-shadow:0 3px 10px rgba(40,49,139,.2);white-space:nowrap;will-change:transform}
.lbl i{width:10px;height:10px;border-radius:50%;background:var(--c);box-shadow:0 0 0 2px #fff}
.lbl::after{content:"";position:absolute;left:50%;bottom:-7px;width:2px;height:7px;margin-left:-1px;background:var(--c);border-radius:2px}
.lbl:hover,.lbl.sel{background:#fff;box-shadow:0 5px 16px rgba(40,49,139,.34);z-index:2}
.lbl.sel{border-color:var(--c)}

.lpanel{z-index:6;top:76px;right:var(--gap);width:290px;max-height:calc(100vh - 290px);display:flex;flex-direction:column;padding:12px 14px;gap:8px}
.lpanel header{display:flex;align-items:center;gap:10px}
.lpanel header strong{flex:1;font-size:15px}
.lpanel .sw{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--ink-soft);cursor:pointer}
.lpanel input[type=search]{width:100%}
.lpanel ol{list-style:none;margin:0;padding:0;overflow:auto;display:grid;gap:4px}
.lpanel li{display:grid;grid-template-columns:12px 1fr;column-gap:8px;align-items:center;padding:6px 8px;border-radius:10px;cursor:pointer;font-size:13px}
.lpanel li small{grid-column:2;color:var(--ink-soft);font-size:11.5px}
.lpanel li:hover{background:var(--b100)}
.lpanel li i{width:10px;height:10px;border-radius:50%;grid-row:1}
.lpanel li.empty{color:var(--ink-soft);cursor:default;grid-template-columns:1fr}
.x{color:var(--ink-soft);font-size:15px;line-height:1;padding:2px 4px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips span,.chip{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;padding:2px 9px;border-radius:999px;background:var(--b100);color:var(--navy);border:1px solid var(--b200)}
.chip i{width:8px;height:8px;border-radius:50%;background:var(--c)}
.chip.on{background:var(--c);color:#fff;border-color:transparent}.chip.on i{background:#fff}

.lcard{z-index:6;top:50%;left:var(--gap);transform:translateY(-50%);width:290px;padding:14px 16px;display:grid;gap:8px}
.lcard .x{position:absolute;top:8px;left:10px}
.lc-head{display:flex;gap:10px;align-items:center}
.lc-head>i{width:14px;height:14px;border-radius:50%;flex:none}
.lc-head strong{display:block;font-size:17px;color:var(--navy)}.lc-head small{color:var(--ink-soft);font-size:12.5px}
.lcard .note{margin:0;font-size:13px;line-height:1.5;background:rgba(255,255,255,.7);border:1px solid var(--b200);border-radius:10px;padding:6px 10px}
.lc-xyz{direction:ltr;display:grid;gap:5px;background:rgba(255,255,255,.62);border:1px solid var(--b100);border-radius:12px;padding:7px 9px}
.kv{display:flex;align-items:center;gap:9px;font-size:13.5px}
.kv span{flex:none;width:19px;height:19px;border-radius:6px;display:grid;place-items:center;font-size:11px;font-weight:700;color:#fff;background:var(--b500)}
.kv:nth-child(2) span{background:#5fb4c4}.kv:nth-child(3) span{background:#8d97d6}
.kv b{color:var(--navy);font-variant-numeric:tabular-nums;font-weight:600}
.crs{color:var(--ink-soft);font-size:11.5px;text-align:center;margin-top:-2px}
.acts{display:flex;gap:8px;margin-top:4px;flex-wrap:wrap}
.btn{background:linear-gradient(135deg,var(--brand),var(--navy));color:#fff;font-weight:600;font-size:13.5px;padding:8px 16px;border-radius:12px;box-shadow:0 4px 12px rgba(40,49,139,.28)}
.btn:disabled{opacity:.45;box-shadow:none;cursor:default}
.btn.ghost{background:var(--b100);color:var(--navy);box-shadow:none}.btn.danger{color:#b4415c}

.edit-badge{top:var(--gap);left:var(--gap);padding:7px 14px;font-size:12.5px;font-weight:600;color:var(--navy);border-radius:999px}
.modal{position:fixed;inset:0;z-index:30;background:rgba(29,42,92,.28);display:flex;align-items:center;justify-content:center;padding:16px}
.sheet{position:static;width:min(440px,100%);max-height:90vh;overflow:auto;padding:18px 20px;display:grid;gap:10px}
.sheet h3{margin:0;font-size:18px;color:var(--navy)}
.sheet label{display:grid;gap:4px;font-size:12.5px;color:var(--ink-soft)}
.sheet input,.sheet textarea,.lpanel input[type=search]{font:inherit;font-size:14px;color:var(--ink);padding:8px 10px;border-radius:10px;border:1px solid var(--b200);background:rgba(255,255,255,.85);outline:none}
.sheet input:focus,.sheet textarea:focus,.lpanel input:focus{border-color:var(--b400);box-shadow:0 0 0 3px rgba(125,182,226,.3)}
.muted{margin:0;color:var(--ink-soft);font-size:12.5px;line-height:1.5}
.drop{border:1.5px dashed var(--b300);border-radius:14px;padding:16px;text-align:center;cursor:pointer;background:rgba(255,255,255,.55)}
.drop input{display:none}.drop span{color:var(--brand);font-weight:600}
.file{display:grid;gap:3px;background:rgba(255,255,255,.7);border:1px solid var(--b200);border-radius:12px;padding:8px 10px;font-size:13px;margin-top:4px}
.file small{color:var(--ink-soft);font-size:12px}.file small.warn{color:#b4415c}
#btn-labels.has svg{color:var(--brand)}
@media (max-width:720px){
  .lpanel{top:auto;bottom:calc(var(--gap) + 140px);right:var(--gap);left:var(--gap);width:auto;max-height:36vh}
  .lcard{top:auto;bottom:calc(var(--gap) + 140px);left:var(--gap);right:var(--gap);width:auto;transform:none}
  .edit-badge{top:auto;bottom:calc(var(--gap) + 140px + 60px);left:var(--gap)}
}

/* ------------------------------------------------------------ live X Y Z under the cursor */
.xyz{z-index:6;right:var(--gap);bottom:calc(var(--gap) + 92px + env(safe-area-inset-bottom));direction:ltr;display:flex;align-items:center;gap:4px;padding:6px 8px 6px 6px;border-radius:16px;cursor:copy;user-select:none;-webkit-user-select:none;transition:box-shadow .16s,transform .16s}
.xyz:hover{box-shadow:0 12px 30px rgba(40,49,139,.22),0 2px 6px rgba(40,49,139,.08)}
.xyz:active{transform:scale(.985)}
.xyz-sys{align-self:stretch;display:flex;align-items:center;margin-right:2px;padding:0 9px;border-radius:11px;background:linear-gradient(135deg,var(--b200),var(--b300));color:var(--navy);font-size:11px;font-weight:700;letter-spacing:.06em}
.xyz-v{display:flex;align-items:center;gap:6px;padding:5px 9px 5px 6px;border-radius:11px;background:rgba(255,255,255,.62);border:1px solid var(--b100);min-width:104px}
.xyz-v i{flex:none;width:19px;height:19px;border-radius:6px;display:grid;place-items:center;font-style:normal;font-size:11px;font-weight:700;color:#fff;background:var(--b500)}
.xyz-v:nth-of-type(2) i{background:#5fb4c4}
.xyz-v:nth-of-type(3) i{background:#8d97d6}
.xyz-v b{font-size:13px;font-weight:600;color:var(--navy);font-variant-numeric:tabular-nums;letter-spacing:.01em;white-space:nowrap;transition:opacity .15s}
.xyz.idle b{opacity:.42}
@media (max-width:900px){.xyz{bottom:calc(var(--gap) + 140px + env(safe-area-inset-bottom))}}
@media (max-width:720px){
  /* phone stack, bottom to top: toolbar, mode switch, X Y Z, hint, measurement list (lifted above the hint while a tool is active) */
  .xyz{bottom:calc(var(--gap) + 134px + env(safe-area-inset-bottom));left:var(--gap);right:var(--gap);justify-content:center;padding:5px}
  .hint{bottom:calc(var(--gap) + 181px + env(safe-area-inset-bottom))}
  .results{bottom:calc(var(--gap) + 181px + env(safe-area-inset-bottom))}
  body.tool-active .results{bottom:calc(var(--gap) + 225px + env(safe-area-inset-bottom))}
  .xyz-sys{display:none}
  .xyz-v{min-width:0;flex:1;padding:4px 6px 4px 5px;gap:5px}.xyz-v b{font-size:12px}
}