:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#eaf8ff;background:#06101b;font-synthesis:none}
*{box-sizing:border-box}
body{margin:0;min-width:320px;min-height:100dvh;overflow:hidden;background:radial-gradient(circle at 50% -10%,#17354c 0,#07131f 38%,#040a11)}
button,label{-webkit-tap-highlight-color:transparent}
.app-shell{width:min(100%,720px);height:100dvh;margin:auto;padding:max(18px,env(safe-area-inset-top)) 16px max(12px,env(safe-area-inset-bottom));display:grid;grid-template-rows:auto 1fr auto;gap:14px}
.topbar{display:flex;align-items:center;gap:12px}
.topbar h1{margin:1px 0 0;font-size:20px;letter-spacing:.03em}
.eyebrow{margin:0;color:#5dd5ff;font-size:9px;font-weight:800;letter-spacing:.25em}
.brand-mark{position:relative;width:42px;height:42px;border:1px solid #26516c;border-radius:13px;background:linear-gradient(145deg,#122a3c,#08131e);box-shadow:inset 0 1px #2a5269,0 8px 24px #0008}
.brand-mark span{position:absolute;width:15px;height:9px;border:2px solid #62d8ff;transform:skewY(-28deg)}
.brand-mark span:nth-child(1){left:8px;top:9px}
.brand-mark span:nth-child(2){right:8px;top:15px}
.brand-mark span:nth-child(3){left:12px;bottom:8px}
.icon-button{margin-left:auto;width:38px;height:38px;border-radius:12px;border:1px solid #27475a;color:#a8c5d4;background:#0d1c28cc;font-weight:800;font-size:17px}
.viewer-card{position:relative;min-height:0;overflow:hidden;border:1px solid #24445a;border-radius:25px;background:linear-gradient(165deg,#102536 0,#07121d 65%);box-shadow:inset 0 1px #41657a66,0 24px 60px #0008;transition:border-color .2s}
.viewer-card.dragging{border-color:#5dd5ff}
.viewport{position:absolute;inset:0;touch-action:none}
.viewport canvas{width:100%;height:100%;display:block}
.grid-floor{position:absolute;left:-20%;right:-20%;bottom:-25%;height:55%;opacity:.22;transform:perspective(420px) rotateX(62deg);transform-origin:bottom;background-image:linear-gradient(#4c829e55 1px,transparent 1px),linear-gradient(90deg,#4c829e55 1px,transparent 1px);background-size:32px 32px;-webkit-mask-image:linear-gradient(to bottom,transparent,#000);mask-image:linear-gradient(to bottom,transparent,#000);pointer-events:none}
.empty-state,.loading-state{position:absolute;z-index:2;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px;pointer-events:none}
[hidden]{display:none!important}
.model-icon{position:relative;width:96px;height:84px;margin-bottom:22px;filter:drop-shadow(0 14px 20px #0ea5e955)}
.model-icon i{position:absolute;width:54px;height:54px;border:2px solid #63dcff;background:#0ea5e922;transform:rotate(30deg) skewY(-30deg) scaleY(.86)}
.model-icon i:nth-child(1){left:8px;top:13px}
.model-icon i:nth-child(2){left:34px;top:0;opacity:.72}
.model-icon i:nth-child(3){left:34px;top:28px;opacity:.45}
.empty-kicker{color:#5dd5ff!important;letter-spacing:.18em;font-size:10px!important;font-weight:800}
.empty-state h2{margin:3px 0 10px;font-size:clamp(24px,7vw,34px);letter-spacing:-.04em}
.empty-state p{color:#829cab;margin:0 0 24px;line-height:1.7;font-size:13px}
.primary-button{pointer-events:auto;display:flex;align-items:center;gap:9px;padding:15px 22px;border-radius:15px;cursor:pointer;color:#031019;background:linear-gradient(135deg,#77e4ff,#24b8f2);font-size:14px;font-weight:850;box-shadow:0 9px 30px #0ea5e955,inset 0 1px #fff9}
.primary-button:active{transform:translateY(1px) scale(.99)}
.primary-button span{font-size:21px;line-height:14px;font-weight:400}
.loading-state strong{margin-top:28px;font-size:18px}
.loading-state p{color:#718b9b;font-size:12px}
.loader-cube{position:relative;width:58px;height:58px;animation:float 1.6s ease-in-out infinite}
.loader-cube span{position:absolute;inset:8px;border:2px solid #51d2ff;transform:rotate(30deg) skewY(-30deg)}
.loader-cube span:nth-child(2){transform:rotate(90deg) skewY(-30deg);opacity:.6}
.loader-cube span:nth-child(3){transform:rotate(150deg) skewY(-30deg);opacity:.3}
@keyframes float{50%{transform:translateY(-8px) rotate(3deg)}}
.viewer-tools{position:absolute;z-index:3;top:15px;right:13px;display:grid;grid-template-columns:repeat(2,48px);gap:8px}
.viewer-tools button{width:48px;height:50px;border:1px solid #31536a;border-radius:13px;color:#d9f5ff;background:#081722dd;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);font-size:19px}
.viewer-tools button span{display:block;color:#8aa7b7;font-size:8px;margin-top:2px}
.viewer-tools button.active{border-color:#49cfff;color:#57d7ff;background:#0b3247dd}
.selection-card{position:absolute;z-index:4;left:14px;right:14px;bottom:82px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px 11px 15px;border:1px solid #38bdf877;border-radius:15px;background:#071c2add;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 10px 30px #0007}
.selection-card>div:first-child{display:grid;gap:2px;min-width:0}
.selection-card>div:first-child span{color:#58d5ff;font-size:8px;font-weight:850;letter-spacing:.12em}
.selection-card>div:first-child strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}
.selection-actions{display:flex;align-items:center;gap:8px;flex:none}
.selection-actions button{padding:8px 12px;border:1px solid #2b5962;border-radius:9px;color:#a4d2d9;background:#10353d;font-size:9px}
.color-control{display:flex;align-items:center;gap:6px;color:#8aa7b7;font-size:9px}
.color-control input{width:26px;height:26px;padding:0;border:1px solid #2b5962;border-radius:7px;background:transparent;cursor:pointer}
.size-card{position:absolute;z-index:5;left:14px;right:126px;top:14px;padding:13px;border:1px solid #3fbf9977;border-radius:17px;background:#0a201cef;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 14px 38px #0009}
.size-heading{display:flex;align-items:center;justify-content:space-between;gap:8px}
.size-heading span{color:#3fbf99;font-size:8px;font-weight:850;letter-spacing:.12em}
.size-heading button{width:27px;height:27px;border:0;border-radius:8px;color:#b9e8d8;background:#123b32;font-size:18px}
.size-values{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:11px}
.size-values p{margin:0;padding:9px;border-radius:10px;background:#11302a}
.size-values span{display:block;color:#7fb3a4;font-size:8px}
.size-values strong{display:block;margin-top:3px;color:#d4f5e8;font-size:13px}
.section-panel{position:absolute;z-index:5;left:14px;right:126px;top:14px;padding:13px;border:1px solid #38bdf877;border-radius:17px;background:#071b29ef;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 14px 38px #0009}
.section-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}
.section-heading>div{display:grid;gap:2px}
.section-heading span{color:#58d5ff;font-size:8px;font-weight:850;letter-spacing:.12em}
.section-heading strong{font-size:11px}
.section-heading>button{width:28px;height:28px;border:0;border-radius:9px;color:#aac4d2;background:#183143;font-size:18px}
.section-axes{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:11px}
.section-axes button{height:32px;border:1px solid #294c62;border-radius:10px;color:#91adbd;background:#0b2231;font-size:12px;font-weight:800}
.section-axes button.active{border-color:#50d4ff;color:#69dcff;background:#0b3a51;box-shadow:inset 0 0 14px #0ea5e933}
.section-move{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:7px;margin-top:11px}
.section-move button{height:34px;padding:0 10px;border:1px solid #294c62;border-radius:10px;color:#91adbd;background:#0b2231;font-size:9px;white-space:nowrap}
.section-move input[type=range]{width:100%;accent-color:#38bdf8}
.section-flip{width:100%;margin-top:8px;padding:8px;border:1px solid #294b60;border-radius:9px;color:#9cb7c6;background:#102736;font-size:9px}
.radius-panel{position:absolute;z-index:5;left:14px;right:126px;top:14px;padding:13px;border:1px solid #fb718577;border-radius:17px;background:#2b1019ef;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 14px 38px #0009}
.radius-heading{display:flex;align-items:flex-start;justify-content:space-between}
.radius-heading>div{display:grid;gap:2px}
.radius-heading span{color:#fb7185;font-size:8px;font-weight:850;letter-spacing:.12em}
.radius-heading strong{font-size:10px}
.radius-heading>button{width:27px;height:27px;border:0;border-radius:8px;color:#ffd1d8;background:#491b27;font-size:18px}
.radius-result{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:11px}
.radius-result p{margin:0;padding:9px;border-radius:10px;background:#401722}
.radius-result span{display:block;color:#d99aa6;font-size:8px}
.radius-result strong{display:block;margin-top:3px;color:#ffd7de;font-size:9px}
.radius-result b{font-size:18px}
.radius-reset{width:100%;margin-top:8px;padding:8px;border:1px solid #63303b;border-radius:9px;color:#e8aeb8;background:#3b1720;font-size:9px}
.measure-panel{position:absolute;z-index:5;left:14px;right:126px;top:14px;padding:13px;border:1px solid #38bdf877;border-radius:17px;background:#071b29ef;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 14px 38px #0009}
.measure-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}
.measure-heading>div{display:grid;gap:2px}
.measure-heading span{color:#58d5ff;font-size:8px;font-weight:850;letter-spacing:.12em}
.measure-heading strong{font-size:12px}
.measure-heading>button{width:28px;height:28px;border:0;border-radius:9px;color:#aac4d2;background:#183143;font-size:18px}
.measure-types{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:11px}
.measure-types button{height:42px;border:1px solid #294c62;border-radius:10px;color:#91adbd;background:#0b2231;font-size:15px}
.measure-types button span{display:block;font-size:8px;margin-top:1px}
.measure-types button.active{border-color:#50d4ff;color:#69dcff;background:#0b3a51;box-shadow:inset 0 0 14px #0ea5e933}
.measure-result{display:flex;align-items:end;justify-content:space-between;margin-top:9px;padding:10px;border-radius:11px;background:#112b3a}
.measure-result>span{color:#829dab;font-size:9px}
.measure-result strong{color:#facc15;font-size:11px}
.measure-result b{font-size:20px}
.measure-reset{width:100%;margin-top:8px;padding:8px;border:1px solid #294b60;border-radius:9px;color:#9cb7c6;background:#102736;font-size:9px}
.model-info{position:absolute;z-index:3;left:14px;right:14px;bottom:14px;padding:13px 15px;border:1px solid #2a4b60;border-radius:15px;background:#07131ddd;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 10px 30px #0007}
.model-info div{display:flex;align-items:center;gap:8px;min-width:0}
.model-info strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}
.status-dot{width:7px;height:7px;border-radius:50%;background:#35e1a1;box-shadow:0 0 10px #35e1a1;flex:none}
.model-info p{display:flex;gap:16px;margin:5px 0 0 15px;color:#708b9b;font-size:10px}
footer{display:flex;justify-content:space-between;align-items:center;color:#627b8a;font-size:9px;letter-spacing:.04em;padding:0 4px}
footer b{color:#3fbf99;font-size:8px;letter-spacing:.15em}
dialog{width:min(calc(100% - 32px),420px);padding:24px;border:1px solid #31566d;border-radius:22px;color:#eaf8ff;background:#0b1a26;box-shadow:0 30px 90px #000c}
dialog::backdrop{background:#02070dbb;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}
dialog h2{margin:5px 0 18px}
dialog>button{position:absolute;right:15px;top:14px;width:34px;height:34px;border:0;border-radius:10px;color:#aec6d3;background:#142b3a;font-size:21px}
dialog ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
dialog li{display:flex;justify-content:space-between;padding:13px;border-radius:12px;background:#102534;color:#819dab;font-size:12px}
dialog li b{color:#dff6ff}
.privacy-note{margin:18px 0 0;padding-top:16px;border-top:1px solid #264152;color:#5db2cf;font-size:11px;line-height:1.6}
.toast{position:fixed;z-index:10;left:50%;bottom:max(28px,env(safe-area-inset-bottom));transform:translate(-50%,20px);padding:11px 16px;border:1px solid #36556a;border-radius:12px;background:#102330f2;color:#eaf8ff;font-size:12px;opacity:0;pointer-events:none;transition:.25s;box-shadow:0 12px 40px #0009;white-space:nowrap}
.toast.show{opacity:1;transform:translate(-50%)}
@media(min-width:600px){.app-shell{padding-inline:28px}.viewer-card{border-radius:30px}.viewer-tools{top:20px;right:20px}.model-info{left:20px;right:20px;bottom:20px}.selection-card{left:20px;right:20px;bottom:88px}.measure-panel,.size-card,.section-panel,.radius-panel{left:20px;right:132px;top:20px}}
@media(max-height:620px){.model-icon{width:70px;height:60px;margin-bottom:12px;transform:scale(.75)}.empty-state h2{font-size:22px}.empty-state p{margin-bottom:14px;line-height:1.45}.primary-button{padding:12px 18px}.app-shell{gap:8px}.topbar h1{font-size:17px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}