:root{color-scheme:light dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--bg: #0b1118;--panel: #111c28;--panel-2: #172534;--line: #263849;--text: #e8f2f6;--muted: #8ca2b2;--accent: #34d2b7;--accent-2: #62b9ff;--topbar-bg: rgba(17, 28, 40, .96);--drawer-bg: rgba(15, 25, 35, .98);--control-bg: #0c151f;--card-bg: #152230;--map-bg: #0b1118;--map-glow: #213447;--shadow: #0008;--on-accent: #071510;--button-bg: #1b2a38;--button-hover: #223446;--input-bg: #0b141d;--result-bg: #0a131c;--glass-bg: rgba(12, 21, 31, .88);--panel-glass: rgba(13, 22, 31, .95);--dialog-bg: rgba(14, 24, 34, .97);--drop-border: #486276;--accent-soft: #34d2b714;--scrim-bg: #0008;--readout: #b9c9d4;--gps-bg: #0b2034ee;--gps-text: #bfe2ff;--processing-bg: #081018dd;--toast-bg: #e8f2f6;--toast-text: #0b1118;--spinner-track: #294050;--map-grid-major: #426273;--map-grid-minor: #243746;--danger-soft: #ff9b96;--north: #ff716b;--map-control-fg: #f7fbff;--map-control-bg: rgba(6, 15, 24, .34);--map-control-hover: rgba(10, 23, 34, .72);--map-control-border: rgba(255, 255, 255, .14);--map-control-label: rgba(7, 16, 25, .9);--map-control-shadow: rgba(0, 0, 0, .58);--tool-fab: #168cff;--tool-fab-fg: #ffffff;--danger: #ff716b;--warning: #ffc45d;--header-h: 58px}@media(prefers-color-scheme:light){:root{--bg: #edf3f7;--panel: #ffffff;--panel-2: #e5edf3;--line: #c5d2dc;--text: #172630;--muted: #607481;--accent: #08a68d;--accent-2: #1978d2;--topbar-bg: rgba(255, 255, 255, .96);--drawer-bg: rgba(247, 250, 252, .98);--control-bg: #ffffff;--card-bg: #f7fafc;--map-bg: #e9f0f5;--map-glow: #ffffff;--shadow: #18304026;--on-accent: #052a23;--button-bg: #e8eff4;--button-hover: #d8e4eb;--input-bg: #ffffff;--result-bg: #f2f6f9;--glass-bg: rgba(255, 255, 255, .88);--panel-glass: rgba(255, 255, 255, .94);--dialog-bg: rgba(255, 255, 255, .97);--drop-border: #90a6b5;--accent-soft: #08a68d18;--scrim-bg: #1830403d;--readout: #425d6d;--gps-bg: #e7f4ffef;--gps-text: #155987;--processing-bg: #f3f7fbe8;--toast-bg: #172630;--toast-text: #ffffff;--spinner-track: #bdced9;--map-grid-major: #8ea6b5;--map-grid-minor: #c8d6df;--danger-soft: #ba3732;--north: #d8413b;--map-control-fg: #173345;--map-control-bg: rgba(255, 255, 255, .58);--map-control-hover: rgba(255, 255, 255, .9);--map-control-border: rgba(35, 69, 88, .2);--map-control-label: rgba(255, 255, 255, .95);--map-control-shadow: rgba(38, 67, 84, .3);--tool-fab: #087bd5;--tool-fab-fg: #ffffff;--danger: #d8413b;--warning: #b66a00}}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;min-height:100%;margin:0;overflow:hidden;background:var(--bg);color:var(--text)}html{height:-webkit-fill-available}body{position:fixed;inset:0;height:100dvh;min-height:-webkit-fill-available;overscroll-behavior:none}#app{position:fixed;inset:0;height:auto;min-height:0}button,input,select{font:inherit;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button{color:inherit;border:0;cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.project-hub{position:fixed;z-index:200;inset:0;display:grid;place-items:center;padding:max(18px,env(safe-area-inset-top)) 16px max(18px,env(safe-area-inset-bottom));overflow-y:auto;background:radial-gradient(circle at 50% 15%,color-mix(in srgb,var(--accent),var(--bg) 86%),var(--bg) 57%);transition:opacity .2s ease,visibility .2s 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var(--shadow)}.drawer.open{transform:translate(0)}.drawer-head{min-height:62px;display:flex;justify-content:space-between;align-items:center;padding:10px 12px 8px 16px;border-bottom:1px solid var(--line)}.drawer-head>div{display:grid}.project-crs-control{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 12px;border-bottom:1px solid var(--line);background:var(--card-bg)}.project-crs-control>div{display:grid;min-width:0}.project-crs-control b{font-size:11px}.project-crs-control small{color:var(--muted);font-size:9px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.drop-zone{margin:12px;min-height:72px;border:1px dashed var(--drop-border);border-radius:12px;display:grid;place-content:center;text-align:center;gap:4px;color:var(--muted);font-size:12px;cursor:pointer;touch-action:manipulation}.drop-zone b{color:var(--text);font-size:13px}.drop-zone:hover,.drop-zone:focus-visible,.drop-zone.dragging{border-color:var(--accent);background:var(--accent-soft)}.layer-list{overflow-y:auto;flex:1;padding:0 10px 12px}.drawer-empty{margin:auto;padding:30px;display:grid;text-align:center;color:var(--muted);gap:6px;font-size:12px}.drawer-empty b{color:var(--text);font-size:14px}.drawer-footer{border-top:1px solid var(--line);padding:10px;display:flex;gap:7px}.drawer-footer button{flex:1;font-size:11px}.layer-card{border:1px solid var(--line);background:var(--card-bg);border-radius:12px;margin:8px 0;padding:10px;transition:transform .14s,border-color .14s,opacity .14s}.layer-card.dragging{opacity:.55;transform:scale(.985);border-color:var(--accent)}.layer-drag-handle{border:0;background:transparent;color:var(--muted);font-size:20px;width:34px;min-width:34px;height:40px;padding:0;cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none}.layer-drag-handle:active{cursor:grabbing}body.layer-reordering,body.layer-reordering *{cursor:grabbing!important;user-select:none!important;-webkit-user-select:none!important}.layer-row{display:flex;align-items:center;gap:8px}.layer-row input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent)}.layer-title{min-width:0;flex:1;display:grid}.layer-title b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.layer-title small{color:var(--muted);margin-top:3px}.layer-row input[type=color]{width:28px;height:28px;border:none;border-radius:7px;background:none;padding:0}.dxf-color-button{min-width:34px;height:27px;padding:0 5px;border:1px solid var(--line);border-radius:6px;background:var(--control-bg);color:var(--muted);font-size:9px;font-weight:800}.dxf-color-button.active{color:var(--on-accent);background:var(--accent);border-color:var(--accent)}.layer-controls{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:9px;align-items:center}.layer-controls select{background:var(--input-bg);border:1px solid var(--line);color:var(--text);padding:7px;border-radius:7px;font-size:11px}.layer-controls input[type=range]{width:100%;accent-color:var(--accent)}.scrim{position:fixed;z-index:25;inset:calc(var(--header-h) + env(safe-area-inset-top)) 0 0 0;background:var(--scrim-bg);opacity:0;pointer-events:none;transition:opacity .2s}.scrim.active{opacity:1;pointer-events:auto}.status-pill{position:absolute;top:12px;left:50%;transform:translate(-50%);border:1px solid var(--line);background:var(--glass-bg);backdrop-filter:blur(10px);padding:7px 11px;border-radius:20px;font-size:11px;display:flex;gap:7px;align-items:center;pointer-events:none;white-space:nowrap}.pulse{width:7px;height:7px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px #34d2b722}.view-switch{position:absolute;z-index:12;top:12px;right:13px;display:flex;padding:3px;border-radius:10px;background:var(--glass-bg);border:1px solid var(--line)}.view-switch button{background:transparent;padding:6px 12px;border-radius:7px;font-size:11px}.view-switch button.active{background:var(--accent);color:var(--on-accent);font-weight:800}.compass{position:absolute;z-index:12;top:59px;right:17px;width:39px;height:39px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:var(--glass-bg);color:var(--north);font:700 11px ui-monospace;transition:transform .1s}.compass:hover{border-color:var(--north)}.compass i{position:absolute;height:14px;width:2px;background:var(--north);top:4px}.coordinate-readout{position:absolute;left:12px;bottom:calc(63px + env(safe-area-inset-bottom));background:var(--glass-bg);border:1px solid var(--line);color:var(--readout);border-radius:8px;padding:6px 9px;font:10px ui-monospace,monospace;pointer-events:none}.gps-indicator{position:absolute;z-index:18;left:12px;top:55px;max-width:calc(100vw - 86px);display:flex;align-items:center;gap:7px;padding:8px 11px;border:1px solid #38a9ff88;border-radius:20px;background:var(--gps-bg);color:var(--gps-text);font-size:10px;box-shadow:0 5px 22px var(--shadow)}.gps-indicator-arrow{width:21px;height:21px;display:grid;place-items:center;border-radius:50%;background:#168cff;color:#fff;font-size:14px;font-weight:900;transition:transform .2s}.tool-rail{position:absolute;z-index:12;right:12px;left:auto;top:108px;max-height:calc(100% - 178px);display:flex;flex-direction:column;gap:6px;padding:2px;overflow-y:auto;scrollbar-width:none}.tool-rail::-webkit-scrollbar{display:none}.tool-rail button{position:relative;flex:0 0 46px;width:46px;height:46px;min-height:46px;display:grid;place-items:center;padding:10px;color:var(--map-control-fg);background:var(--map-control-bg);border:1px solid var(--map-control-border);border-radius:50%;box-shadow:0 3px 13px var(--map-control-shadow);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);transition:transform .16s ease,background .16s ease,color .16s ease,box-shadow .16s ease}.tool-rail button:hover,.tool-rail button:focus-visible{background:var(--map-control-hover);transform:scale(1.06)}.tool-rail button:active{transform:scale(.92)}.tool-rail button.active{color:var(--on-accent);background:var(--accent);border-color:color-mix(in srgb,var(--accent),white 35%);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent),transparent 72%),0 5px 17px var(--map-control-shadow)}.tool-rail svg{width:25px;height:25px;display:block;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.tool-rail small{display:none}.feature-dock{position:absolute;z-index:20;left:50%;bottom:calc(10px + env(safe-area-inset-bottom));width:min(370px,calc(100vw - 12px));height:184px;transform:translate(-50%);pointer-events:none}.feature-menu-button{position:absolute;z-index:3;left:50%;bottom:0;width:54px;height:54px;display:grid;place-items:center;padding:13px;color:var(--tool-fab-fg);background:var(--tool-fab);border:2px solid #ffffffd9;border-radius:50%;box-shadow:0 7px 24px #001b36aa,0 0 0 4px #168cff24;transform:translate(-50%);pointer-events:auto;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.feature-menu-button:hover{box-shadow:0 9px 28px #001b36cc,0 0 0 5px #168cff38}.feature-menu-button:active{transform:translate(-50%) scale(.92)}.feature-menu-button svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease}.feature-dock.open .feature-menu-button svg{transform:rotate(-8deg) scale(1.08)}.feature-carousel{position:absolute;right:0;bottom:51px;left:0;height:132px;display:flex;flex-direction:column;justify-content:flex-end;opacity:0;transform:translateY(32px) scale(.72);transform-origin:50% 100%;pointer-events:none;transition:opacity .2s ease,transform .26s cubic-bezier(.2,.8,.2,1)}.feature-dock.open .feature-carousel{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}.feature-category-nav{height:32px;display:grid;grid-template-columns:44px 1fr 44px;align-items:center;margin:0 4px;color:var(--map-control-fg);text-shadow:0 2px 5px var(--map-control-shadow)}.feature-category-nav strong{text-align:center;font-size:12px;letter-spacing:.015em}.feature-category-nav button{height:30px;color:inherit;background:transparent;border-radius:16px;font-size:27px;line-height:1;text-shadow:inherit}.feature-category-nav button:hover,.feature-category-nav button:focus-visible{background:var(--map-control-bg)}.feature-tools{width:270px;height:96px;display:flex;justify-content:flex-start;align-items:flex-start;gap:18px;margin:0 auto;padding:10px 111px 20px;overflow-x:auto;overflow-y:hidden;scroll-behavior:smooth;scroll-snap-type:x mandatory;scrollbar-width:none;touch-action:pan-x;overscroll-behavior-x:contain;-webkit-mask-image:linear-gradient(90deg,transparent,#000 13%,#000 87%,transparent);mask-image:linear-gradient(90deg,transparent,#000 13%,#000 87%,transparent)}.feature-tools::-webkit-scrollbar{display:none}.feature-tools button{--arc-y: 18px;--arc-scale: .86;position:relative;width:48px;height:48px;flex:0 0 48px;display:grid;place-items:center;padding:11px;color:var(--map-control-fg);background:var(--map-control-bg);border:1px solid var(--map-control-border);border-radius:50%;box-shadow:0 5px 16px var(--map-control-shadow);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);scroll-snap-align:center;transform:translateY(var(--arc-y)) scale(var(--arc-scale));transition:transform .16s ease,background .16s ease,color .16s ease,opacity .16s ease;opacity:.66}.feature-tools button:hover,.feature-tools button:focus-visible{background:var(--map-control-hover);opacity:1}.feature-tools button:active{transform:translateY(var(--arc-y)) scale(.82)}.feature-tools button.selected{color:var(--on-accent);background:var(--accent);border-color:color-mix(in srgb,var(--accent),white 35%);opacity:1;box-shadow:0 0 0 3px color-mix(in srgb,var(--accent),transparent 72%),0 6px 18px var(--map-control-shadow)}.feature-tools button.active:not(.selected){border-color:var(--accent);opacity:1}.feature-tools svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.feature-tools small{display:none}#viewport.feature-menu-open .coordinate-readout{opacity:.18}#viewport.feature-menu-open .preset-bar{opacity:0;transform:translateY(14px);pointer-events:none}#viewport.feature-menu-open .section-panel:not(.collapsed){bottom:calc(196px + env(safe-area-inset-bottom))}.preset-bar{position:absolute;z-index:12;right:12px;bottom:calc(14px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:4px;background:var(--glass-bg);border:1px solid var(--line);border-radius:10px;padding:5px}.preset-bar button{background:var(--panel-2);border-radius:6px;padding:6px 8px;font-size:9px}.preset-bar label{display:flex;align-items:center;color:var(--muted);font-size:9px;gap:3px;padding-left:3px}.preset-bar input{width:70px;accent-color:var(--accent)}.preset-bar output{min-width:22px;color:var(--text)}.section-panel{position:absolute;z-index:10;left:12px;right:70px;bottom:calc(53px + env(safe-area-inset-bottom));height:min(32vh,260px);background:var(--panel-glass);border:1px solid var(--line);border-radius:14px;backdrop-filter:blur(14px);box-shadow:0 10px 35px var(--shadow);overflow:hidden;transition:height .2s,transform .2s}.section-panel.collapsed{transform:translateY(calc(100% + 70px))}.panel-handle{height:48px;padding:7px 9px 6px 13px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.panel-handle>div:first-child{display:grid}.panel-handle small{color:var(--muted);font-size:9px;margin-top:2px}.panel-handle>div:last-child{display:flex;gap:4px}.panel-handle .ghost{padding:6px 9px;font-size:10px}#sectionCanvas{display:block;width:100%;height:calc(100% - 112px)}.legend{height:24px;display:flex;justify-content:center;align-items:center;gap:12px;color:var(--muted);font-size:8px}.section-metrics{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:4px 12px;color:var(--muted);font-size:9px;border-top:1px solid var(--line)}.section-metrics span{color:var(--text)}.section-metrics label{white-space:nowrap}.section-metrics input{width:58px;padding:4px;border:1px solid var(--line);border-radius:6px;color:var(--text);background:var(--input-bg)}.legend span:before{content:"";display:inline-block;width:13px;height:3px;border-radius:2px;margin-right:4px;vertical-align:middle;background:currentColor}.legend .bottom{color:#6fe7ff}.legend .top{color:#ffb45e}.legend .fill{color:#2c8dff}.legend .grade{color:#35d782}.legend .cut{color:#ff5c52}.processing{position:absolute;z-index:40;inset:0;display:grid;place-content:center;justify-items:center;background:var(--processing-bg);gap:10px}.processing.hidden,.hidden{display:none!important}.processing span{color:var(--muted);font-size:12px;max-width:80vw;text-align:center}.processing progress{width:min(330px,75vw);height:7px;accent-color:var(--accent)}.spinner{width:42px;height:42px;border:3px solid var(--spinner-track);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:absolute;z-index:60;left:50%;bottom:25px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--toast-bg);color:var(--toast-text);padding:9px 13px;border-radius:9px;font-size:11px;transition:.2s;box-shadow:0 5px 25px var(--shadow)}.toast.show{opacity:1;transform:translate(-50%)}.popover{position:fixed;z-index:80;top:calc(var(--header-h) + env(safe-area-inset-top) - 3px);right:10px;width:220px;padding:6px;border:1px solid var(--line);background:var(--card-bg);border-radius:11px;box-shadow:0 10px 35px var(--shadow)}.popover button{width:100%;text-align:left;border-radius:7px;padding:10px;background:transparent;font-size:11px}.popover button:hover{background:var(--button-hover)}.coordinate-search{position:absolute;z-index:35;top:58px;left:12px;width:min(310px,calc(100vw - 84px));padding:12px;display:grid;gap:10px;border:1px solid var(--line);border-radius:13px;background:var(--dialog-bg);box-shadow:0 12px 35px var(--shadow);backdrop-filter:blur(14px)}.coordinate-search>div{display:flex;align-items:center;justify-content:space-between}.coordinate-search label{display:grid;gap:4px;color:var(--muted);font-size:10px}.coordinate-search input{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--input-bg);color:var(--text);font:12px ui-monospace,monospace}.coordinate-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.field-panel{position:absolute;z-index:34;top:58px;right:62px;width:min(390px,calc(100vw - 140px));padding:12px;display:grid;gap:10px;border:1px solid var(--line);border-radius:13px;background:var(--dialog-bg);box-shadow:0 12px 35px var(--shadow);backdrop-filter:blur(14px)}.field-panel-head{display:flex;align-items:center;justify-content:space-between}.field-panel-head>div{display:grid;gap:3px}.field-panel-head small{color:var(--muted);font-size:9px}.volume-results{min-height:54px;padding:9px;border-radius:9px;background:var(--result-bg);border:1px solid var(--line);color:var(--readout);font:10px/1.55 ui-monospace,monospace}.field-panel-actions{display:flex;gap:6px}.field-panel-actions button{flex:1;padding:8px 7px;font-size:10px}.boundary-elevation{display:grid;gap:5px;color:var(--muted);font-size:10px}.boundary-elevation input{width:100%;padding:8px 9px;border:1px solid var(--line);border-radius:8px;background:var(--input-bg);color:var(--text);font:12px ui-monospace,monospace}.boundary-actions{display:grid;grid-template-columns:1fr 1.35fr}.saved-boundary-card{border-color:color-mix(in srgb,#c72cff,var(--line) 68%)}.saved-boundary-controls{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:9px}.saved-boundary-controls button{padding:7px 5px;font-size:9px}.saved-boundary-controls select{background:var(--input-bg);border:1px solid var(--line);color:var(--text);padding:7px;border-radius:7px;font-size:10px}@media(max-width:620px){.field-panel{left:8px;right:68px;width:auto;top:58px}.tool-rail{gap:5px;right:9px}.tool-rail button{width:44px;height:44px;min-height:44px;flex-basis:44px;padding:10px}.tool-rail svg{width:24px;height:24px}.feature-dock{width:calc(100vw - 12px)}.coordinate-grid{grid-template-columns:1fr}}@media(min-width:960px){.drawer{transform:none;position:fixed}#viewport{left:360px}.scrim,#closeDrawer,#menuButton{display:none}}@media(max-width:620px){.project-hub{place-items:start center;padding-right:10px;padding-left:10px}.project-hub-card{min-height:calc(100vh - max(20px,env(safe-area-inset-top)) - max(20px,env(safe-area-inset-bottom)));padding:19px 15px;border-radius:20px}.project-hub-intro{margin:30px 0 18px}.project-hub-actions{grid-template-columns:1fr}.project-action{min-height:65px}.new-project-form{grid-template-columns:1fr}.new-project-form>div{justify-content:flex-end}.brand-mark{display:none}.primary{padding:8px 9px;font-size:11px}.preset-bar label{display:none}.coordinate-readout{bottom:calc(57px + env(safe-area-inset-bottom));max-width:72vw;overflow:hidden}.section-panel{left:9px;right:62px;bottom:calc(59px + env(safe-area-inset-bottom))}}#sectionPanel{overflow:hidden;min-width:280px;min-height:180px;max-width:95vw;max-height:85vh;display:flex;flex-direction:column}#sectionCanvas{flex-grow:1;width:100%;height:100%;min-height:100px}@media(orientation:landscape)and (max-height:600px){#featureDock{transform:scale(.65);transform-origin:bottom center;bottom:-10px}#featureCarousel{padding-bottom:0}#sectionPanel{bottom:70px}}#mapCrosshair{position:absolute;top:50%;left:50%;width:32px;height:32px;transform:translate(-50%,-50%);pointer-events:none;z-index:999;display:none}#mapCrosshair:after{content:"";position:absolute;top:10px;left:10px;width:12px;height:12px;border:2px solid #ffcc00;border-radius:50%;box-shadow:0 0 4px #000c}#mapCrosshair:before{content:"";position:absolute;top:0;left:0;width:32px;height:32px;background:linear-gradient(to right,transparent 15px,#ffcc00 15px,#ffcc00 17px,transparent 17px),linear-gradient(to bottom,transparent 15px,#ffcc00 15px,#ffcc00 17px,transparent 17px);box-shadow:0 0 4px #000c}