:root{--bg:#f2f3f5;--bg-rgb:242,243,245;--panel:#ffffff;--panel-2:#eceef1;--line:#d7dbe1;--text:#1b1e24;--muted:#5b6270;--amber:#c9660a;--teal:#0e8f5c;--red:#c92a2a;--mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,Consolas,monospace;--sans:"Inter",system-ui,-apple-system,sans-serif}body.dark{--bg:#0f1114;--bg-rgb:15,17,20;--panel:#1b1e24;--panel-2:#20242b;--line:#2c313a;--text:#e8e6e1;--muted:#767c88;--amber:#ff9d2f;--teal:#3ddc97;--red:#ff5c5c}*{box-sizing:border-box}html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:var(--bg)}body{font-family:var(--sans);color:var(--text);transition:background .15s,color .15s}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}#viewport{position:fixed;inset:0;display:block;width:100%;height:100%;touch-action:none;cursor:grab}#viewport.dragging{cursor:grabbing}.overlay{position:fixed;z-index:5;pointer-events:none}.overlay>*{pointer-events:auto}#topBar{top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-start;padding:16px 20px;background:linear-gradient(180deg,rgba(var(--bg-rgb),.9),rgba(var(--bg-rgb),0))}.title-block .eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:4px}h1{margin:0;font-size:19px;font-weight:600;letter-spacing:-.01em}.status-line{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;color:var(--muted);margin:0 0 6px}#settingsPanel .status-line{margin-top:0}.help-panel{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);font-size:12px;line-height:1.55;color:var(--muted)}.help-panel.hidden{display:none}.help-panel p{margin:0 0 8px}.help-panel p:last-child{margin-bottom:0}.help-panel b{color:var(--text);font-weight:600}.dot{width:7px;height:7px;border-radius:50%;background:var(--muted);box-shadow:0 0 0 3px #767c8826}.dot.live{background:var(--teal);box-shadow:0 0 0 3px #3ddc972e;animation:pulse 1.8s infinite}.dot.err{background:var(--red);box-shadow:0 0 0 3px #ff5c5c2e}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.btn-row{position:relative;display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;align-items:center}.top-actions{position:relative}button{font-family:var(--mono);font-size:11px;letter-spacing:.03em;text-transform:uppercase;background:var(--panel-2);color:var(--text);border:1px solid var(--line);padding:9px 14px;border-radius:4px;cursor:pointer;transition:border-color .15s,color .15s,background .15s;backdrop-filter:blur(6px)}button:hover{border-color:var(--amber);color:var(--amber)}button:focus-visible{outline:2px solid var(--amber);outline-offset:2px}button:disabled{opacity:.35;cursor:not-allowed}button.primary{border-color:var(--amber);color:var(--amber)}button.icon-btn{width:36px;height:36px;padding:0;display:inline-flex;align-items:center;justify-content:center;text-transform:none;letter-spacing:0}button.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}button.icon-btn.primary{background:#c9660a1f}body.dark button.icon-btn.primary{background:#ff9d2f24}#dropZone{position:fixed;inset:0;z-index:4;display:flex;align-items:center;justify-content:center;background:rgba(var(--bg-rgb),.78);overflow:hidden}#dropZone.hidden{display:none}#dropZone.dragover{background:rgba(var(--bg-rgb),.88)}#dropZone.dragover:after{content:"";position:absolute;inset:14px;border-radius:16px;pointer-events:none;border:1.5px solid color-mix(in srgb,var(--amber) 55%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--amber) 12%,transparent);animation:homeDragPulse 1.4s ease-in-out infinite}.home-atmosphere{position:absolute;inset:0;pointer-events:none;overflow:hidden}.home-space{position:absolute;inset:0;pointer-events:none;perspective:900px;transform-style:preserve-3d;animation:homeSpaceDrift 22s ease-in-out infinite}.home-grid-mask{position:absolute;left:-30%;top:-10%;width:160%;height:140%;overflow:hidden;transform:rotateX(62deg) translateZ(-40px) scale(1.25);transform-origin:center 55%;mask-image:radial-gradient(ellipse 51% 56% at 50% 45%,#000 18%,transparent 72%);-webkit-mask-image:radial-gradient(ellipse 51% 56% at 50% 45%,#000 18%,transparent 72%)}.home-grid{position:absolute;inset:0;background-image:linear-gradient(color-mix(in srgb,var(--line) 65%,var(--text)) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--line) 65%,var(--text)) 1px,transparent 1px);background-size:48px 48px;background-repeat:repeat;opacity:.55}.home-wire{position:absolute;left:50%;top:44%;width:120px;height:120px;margin:-60px 0 0 -60px;transform-style:preserve-3d;opacity:.3}.home-cube{position:absolute;inset:32px;transform-style:preserve-3d;transform:rotateX(-22deg) rotateY(28deg)}.home-cube .hf{position:absolute;inset:0;border:1px solid color-mix(in srgb,var(--amber) 70%,transparent);background:color-mix(in srgb,var(--amber) 4%,transparent)}.home-cube .front{transform:translateZ(28px)}.home-cube .back{transform:rotateY(180deg) translateZ(28px)}.home-cube .right{transform:rotateY(90deg) translateZ(28px);border-color:color-mix(in srgb,var(--teal) 65%,transparent)}.home-cube .left{transform:rotateY(-90deg) translateZ(28px);border-color:color-mix(in srgb,var(--teal) 65%,transparent)}.home-cube .top{transform:rotateX(90deg) translateZ(28px)}.home-cube .bottom{transform:rotateX(-90deg) translateZ(28px)}.drop-card{position:relative;z-index:1;background:color-mix(in srgb,var(--panel) 88%,transparent);border:1px dashed color-mix(in srgb,var(--line) 90%,var(--amber));border-radius:14px;padding:44px 48px 28px;text-align:center;max-width:400px;width:min(400px,calc(100vw - 40px));backdrop-filter:blur(10px);box-shadow:0 1px color-mix(in srgb,var(--text) 4%,transparent),0 24px 48px #0000001f;animation:homeCardIn .55s ease both;transition:border-color .2s,transform .2s,box-shadow .2s}#dropZone.dragover .drop-card,.drop-card.dragover{border-color:var(--amber);border-style:solid;transform:scale(1.02);box-shadow:0 0 0 1px color-mix(in srgb,var(--amber) 35%,transparent),0 28px 56px #00000029}.drop-card .eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--amber);text-transform:uppercase;margin-bottom:14px}.drop-card h2{margin:0 0 12px;font-size:clamp(22px,4vw,28px);font-weight:600;letter-spacing:-.02em;line-height:1.15}.drop-card p{margin:0 auto 24px;font-size:14px;color:var(--muted);line-height:1.55;max-width:30ch}.drop-card #fileBtn{min-width:160px;transition:transform .15s,background .15s,border-color .15s,color .15s}.drop-card #fileBtn:hover{transform:translateY(-1px)}.drop-meta{margin-top:18px;font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);opacity:.85}body:has(#dropZone:not(.hidden)) #topBar .title-block{opacity:.4;transition:opacity .25s}@keyframes homeCardIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes homeSpaceDrift{0%{transform:rotateX(0) rotateY(-6deg) translate3d(-1.5%,.5%,0)}35%{transform:rotateX(3deg) rotateY(7deg) translate3d(1.2%,-.8%,0)}65%{transform:rotateX(-2deg) rotateY(4deg) translate3d(.6%,1%,0)}to{transform:rotateX(0) rotateY(-6deg) translate3d(-1.5%,.5%,0)}}@keyframes homeDragPulse{0%,to{opacity:.55}50%{opacity:1}}@media (prefers-reduced-motion: reduce){.home-space,.drop-card,#dropZone.dragover:after{animation:none!important}.home-space{transform:none}.drop-card{opacity:1;transform:none}}#loadingOverlay{position:fixed;inset:0;z-index:6;display:none;align-items:center;justify-content:center;background:radial-gradient(ellipse 70% 55% at 50% 42%,rgba(var(--bg-rgb),.55),rgba(var(--bg-rgb),.92)),rgba(var(--bg-rgb),.88);backdrop-filter:blur(6px);opacity:0;transition:opacity .28s ease}#loadingOverlay.show{display:flex;opacity:1;animation:loadingFadeIn .32s ease both}@keyframes loadingFadeIn{0%{opacity:0}to{opacity:1}}.loading-card{display:flex;flex-direction:column;align-items:center;gap:28px;padding:8px 20px}.loading-stage{position:relative;width:140px;height:140px;perspective:600px}.loading-orbit{position:absolute;inset:0;transform-style:preserve-3d;animation:loadingSpin 7s linear infinite}.loading-ring{position:absolute;inset:12px;border:1px solid color-mix(in srgb,var(--amber) 45%,transparent);border-radius:50%;transform-style:preserve-3d}.loading-ring:nth-child(1){transform:rotateX(72deg)}.loading-ring:nth-child(2){transform:rotateY(72deg);border-color:color-mix(in srgb,var(--teal) 40%,transparent)}.loading-ring:nth-child(3){transform:rotateX(72deg) rotateY(72deg);inset:22px;opacity:.7}.loading-cube{position:absolute;left:50%;top:50%;width:56px;height:56px;margin:-28px 0 0 -28px;transform-style:preserve-3d;animation:loadingCube 3.6s ease-in-out infinite}.loading-cube .face{position:absolute;inset:0;border:1.5px solid var(--amber);background:color-mix(in srgb,var(--amber) 8%,transparent);backface-visibility:visible}.loading-cube .front{transform:translateZ(28px)}.loading-cube .back{transform:rotateY(180deg) translateZ(28px)}.loading-cube .right{transform:rotateY(90deg) translateZ(28px);border-color:var(--teal)}.loading-cube .left{transform:rotateY(-90deg) translateZ(28px);border-color:var(--teal)}.loading-cube .top{transform:rotateX(90deg) translateZ(28px);border-color:color-mix(in srgb,var(--text) 35%,var(--amber))}.loading-cube .bottom{transform:rotateX(-90deg) translateZ(28px);border-color:color-mix(in srgb,var(--text) 35%,var(--amber))}.loading-scan{position:absolute;left:-6px;right:-6px;height:2px;top:0;background:linear-gradient(90deg,transparent,var(--amber),transparent);box-shadow:0 0 12px color-mix(in srgb,var(--amber) 70%,transparent);transform:translateZ(30px);animation:loadingScan 1.8s ease-in-out infinite}.loading-axes{position:absolute;left:50%;top:50%;width:0;height:0;transform-style:preserve-3d;animation:loadingSpin 7s linear infinite reverse}.loading-axes .ax{position:absolute;left:0;top:0;width:34px;height:2px;transform-origin:left center;border-radius:1px}.loading-axes .ax:after{content:"";position:absolute;right:-3px;top:-3px;border:4px solid transparent}.ax-x{background:#e74c3c;transform:rotateY(90deg)}.ax-x:after{border-left-color:#e74c3c}.ax-y{background:#2ecc71;transform:rotate(-90deg)}.ax-y:after{border-left-color:#2ecc71;right:-1px;top:-4px;transform:rotate(90deg)}.ax-z{background:#3498db}.ax-z:after{border-left-color:#3498db}.loading-copy{display:flex;flex-direction:column;align-items:center;gap:8px;min-width:min(420px,86vw);text-align:center}.loading-eyebrow{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}#loadingText{font-family:var(--mono);font-size:13px;color:var(--amber);line-height:1.45;max-width:100%;animation:loadingTextPulse 1.6s ease-in-out infinite}.loading-bar{margin-top:6px;width:min(220px,70vw);height:2px;background:color-mix(in srgb,var(--line) 80%,transparent);border-radius:2px;overflow:hidden}.loading-bar span{display:block;height:100%;width:36%;background:linear-gradient(90deg,var(--amber),var(--teal));border-radius:2px;animation:loadingBar 1.35s ease-in-out infinite}@keyframes loadingSpin{to{transform:rotateY(360deg) rotateX(18deg)}}@keyframes loadingCube{0%,to{transform:rotateX(-22deg) rotateY(28deg)}50%{transform:rotateX(-28deg) rotateY(208deg)}}@keyframes loadingScan{0%,to{top:4px;opacity:.35}50%{top:50px;opacity:1}}@keyframes loadingTextPulse{0%,to{opacity:.78}50%{opacity:1}}@keyframes loadingBar{0%{transform:translate(-120%)}to{transform:translate(320%)}}@media (prefers-reduced-motion: reduce){.loading-orbit,.loading-cube,.loading-axes,.loading-scan,#loadingText,.loading-bar span{animation:none!important}.loading-cube{transform:rotateX(-22deg) rotateY(35deg)}}#bottomBar{bottom:0;left:0;right:0;display:flex;flex-direction:column;gap:8px;padding:14px 20px;background:linear-gradient(0deg,rgba(var(--bg-rgb),.9),rgba(var(--bg-rgb),0));pointer-events:none}#bottomBar #logPanel{pointer-events:auto}#logPanel{display:none;max-width:720px;max-height:45vh;overflow-y:auto;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:10px 12px;font-family:var(--mono);font-size:11px;color:var(--muted);line-height:1.6;white-space:pre-wrap}#logPanel.show{display:block}#logPanel div.new{color:var(--text)}#deviceName{font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:8px}#deviceName b{color:var(--text)}#settingsPanel,#sectionPanel,#measurePanel{position:absolute;top:calc(100% + 8px);right:0;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:14px 16px;min-width:220px;box-shadow:0 8px 24px #0000002e;z-index:9}#settingsPanel{min-width:280px;max-width:340px}#measurePanel{min-width:260px;right:auto;left:0}#settingsPanel.hidden,#sectionPanel.hidden,#measurePanel.hidden{display:none}.measure-status{font-size:13px;color:var(--muted);margin-bottom:10px;line-height:1.4}.measure-title{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--amber);margin-bottom:8px}.measure-title.hidden{display:none}.measure-mode-row{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:10px}.measure-mode-row.hidden{display:none}.measure-mode-btn{width:100%;text-align:center;padding:6px 4px;font-size:12px}.measure-mode-btn.active{border-color:var(--teal);color:var(--teal);background:#0e8f5c1a}body.dark .measure-mode-btn.active{background:#3ddc971f}.measure-values{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.measure-values li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:7px 8px;border-radius:6px;border:1px solid transparent;cursor:pointer;font-size:13px}.measure-values li:hover{background:var(--panel-2);border-color:var(--line)}.measure-values li.primary{border-color:var(--teal);background:#0e8f5c14}body.dark .measure-values li.primary{background:#3ddc971a}.measure-values .mv-label{color:var(--muted);font-size:12px}.measure-values .mv-value{font-family:var(--mono);font-weight:600;color:var(--text);white-space:nowrap}.measure-values li.copied .mv-value{color:var(--teal)}.settings-section{margin-bottom:14px}.settings-section:last-child{margin-bottom:0}.settings-section.hidden{display:none}.settings-label{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}.settings-buttons{display:flex;flex-direction:column;gap:6px}.settings-buttons button,.settings-section>button:not(.theme-toggle){width:100%;text-align:left}.theme-toggle{width:100%;display:flex;align-items:stretch;gap:0;padding:3px;text-transform:none;letter-spacing:0;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;overflow:hidden}.theme-toggle:hover{border-color:var(--line);color:inherit}.theme-opt{flex:1;display:inline-flex;align-items:center;justify-content:center;height:32px;border-radius:6px;color:var(--muted);transition:background .18s,color .18s,box-shadow .18s}.theme-opt svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}.theme-opt.moon svg{fill:currentColor;stroke:none}body:not(.dark) .theme-opt.sun,body.dark .theme-opt.moon{background:var(--panel);color:var(--amber);box-shadow:0 1px 3px #0000001f}body.dark .theme-opt.sun{color:var(--muted)}body:not(.dark) .theme-opt.moon{color:var(--muted)}.theme-toggle:focus-visible{outline:2px solid var(--amber);outline-offset:2px}#sectionPanel input[type=range]{width:100%;accent-color:var(--amber);margin:4px 0}#sectionOffsetValue{font-family:var(--mono);font-size:11px;color:var(--muted)}.section-plane-btns{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.plane-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:8px 6px;font-weight:600;width:100%;text-align:center;border-width:2px}.plane-btn span{font-family:var(--mono);font-size:10px;font-weight:500;letter-spacing:.06em;opacity:.85}.plane-btn.plane-x{border-color:#e74c3c;color:#e74c3c;background:#e74c3c14}.plane-btn.plane-y{border-color:#2ecc71;color:#2ecc71;background:#2ecc7114}.plane-btn.plane-z{border-color:#3498db;color:#3498db;background:#3498db14}.plane-btn.plane-x:hover,.plane-btn.plane-x.active{background:#e74c3c33;color:#e74c3c;border-color:#e74c3c}.plane-btn.plane-y:hover,.plane-btn.plane-y.active{background:#2ecc7133;color:#2ecc71;border-color:#2ecc71}.plane-btn.plane-z:hover,.plane-btn.plane-z.active{background:#3498db33;color:#3498db;border-color:#3498db}body.dark .plane-btn.plane-x{color:#ff7b72;border-color:#ff7b72}body.dark .plane-btn.plane-y{color:#3ddc97;border-color:#3ddc97}body.dark .plane-btn.plane-z{color:#6cb6ff;border-color:#6cb6ff}.hatch-swatches{display:flex;gap:8px;flex-wrap:wrap}.hatch-swatch{width:28px;height:28px;padding:0;border-radius:6px;border:2px solid var(--line);background:var(--swatch);cursor:pointer;box-shadow:inset 0 0 0 1px #0000000f}.hatch-swatch:hover{border-color:var(--muted)}.hatch-swatch.active{border-color:var(--amber);box-shadow:0 0 0 1px var(--amber),inset 0 0 0 1px #0000000f}.panel-note{margin:12px 0 0;max-width:260px;font-family:var(--mono);font-size:10px;line-height:1.6;color:var(--muted)}.measure-label{position:fixed;z-index:7;transform:translate(-50%,-140%);background:var(--panel);border:1px solid var(--teal);color:var(--teal);font-family:var(--mono);font-size:11px;padding:3px 7px;border-radius:4px;pointer-events:none;white-space:nowrap}.measure-label.angle{border-color:var(--amber);color:var(--amber);background:#fff;font-weight:600;font-size:12px;transform:translate(-50%,-50%);box-shadow:0 1px 4px #00000024}body.dark .measure-label.angle{background:var(--panel)}#hoverTooltip{position:fixed;z-index:8;pointer-events:none;display:none;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:4px 8px;font-family:var(--mono);font-size:11px;color:var(--text);transform:translate(14px,14px);white-space:nowrap}#axisDiag{position:fixed;left:20px;bottom:120px;z-index:8;pointer-events:none;background:var(--panel);border:1px solid var(--amber);border-radius:6px;padding:10px 12px;font-family:var(--mono);font-size:11px;color:var(--text);line-height:1.7;white-space:pre;min-width:230px}#axisDiag.hidden{display:none}#axisDiag b{color:var(--amber)}@media (max-width: 720px){#topBar{padding:10px 12px;padding-top:max(10px,env(safe-area-inset-top));gap:8px;align-items:center}.title-block{min-width:0;flex:1}.title-block .eyebrow{font-size:10px;margin-bottom:2px}h1{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:min(46vw,11rem)}.top-actions{flex-shrink:0}.btn-row{gap:4px;flex-wrap:nowrap}button.icon-btn{width:40px;height:40px}button.icon-btn svg{width:19px;height:19px}#settingsPanel,#sectionPanel,#measurePanel{position:fixed;left:max(10px,env(safe-area-inset-left));right:max(10px,env(safe-area-inset-right));top:auto;bottom:max(10px,env(safe-area-inset-bottom));width:auto;min-width:0;max-width:none;max-height:min(52vh,420px);overflow-y:auto;-webkit-overflow-scrolling:touch;box-shadow:0 -8px 28px #00000038}#measurePanel{left:max(10px,env(safe-area-inset-left));right:max(10px,env(safe-area-inset-right))}.panel-note{max-width:none}#bottomBar{padding:10px 12px;padding-bottom:max(10px,env(safe-area-inset-bottom))}#logPanel{max-width:100%;max-height:28vh}#axisDiag{left:10px;right:10px;bottom:90px;min-width:0;max-width:none;white-space:pre-wrap;font-size:10px}.drop-card{padding:28px 22px;width:min(400px,calc(100vw - 28px))}.drop-card h2{font-size:1.45rem}}