:root{--bg: #080b14;--panel: #0c1121;--panel2: #0e1529;--surface-raised: rgba(255, 255, 255, .035);--surface-hover: rgba(255, 255, 255, .06);--stroke: rgba(255, 255, 255, .08);--stroke-focus: rgba(74, 158, 255, .45);--text: rgba(255, 255, 255, .9);--muted: rgba(255, 255, 255, .52);--dim: rgba(255, 255, 255, .28);--accent: #4a9eff;--accent-muted: rgba(74, 158, 255, .15);--accent-hover: #5eadff;--good: #5ee8b0;--good-bg: rgba(94, 232, 176, .08);--warn: #f0c060;--warn-bg: rgba(240, 192, 96, .1);--bad: #f07080;--bad-bg: rgba(240, 112, 128, .08);--radius: 8px;--radius-lg: 12px;--radius-pill: 999px;--speed: .15s;--topbar-bg: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .015));--pane-shadow: 0 2px 8px rgba(0, 0, 0, .2);--subtle-bg: rgba(255, 255, 255, .02);--elevated-border: rgba(255, 255, 255, .1);--chat-shell-bg: linear-gradient(180deg, rgba(255, 255, 255, .02), rgba(255, 255, 255, 0));--chat-history-bg: linear-gradient(180deg, rgba(255, 255, 255, .016), rgba(255, 255, 255, .006));--chat-bubble-ai-bg: rgba(255, 255, 255, .05);--chat-bubble-ai-border: rgba(255, 255, 255, .08);--chat-bubble-user-bg: rgba(74, 158, 255, .2);--chat-bubble-user-border: rgba(74, 158, 255, .36);--chat-input-bg: linear-gradient(180deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, .015));--chat-textarea-bg: rgba(0, 0, 0, .2);--modal-bg: rgba(12, 17, 33, .97);--modal-title-bg: rgba(255, 255, 255, .03);--modal-shadow: 0 24px 64px rgba(0, 0, 0, .5), 0 0 0 1px rgba(255, 255, 255, .04);--context-bg: rgba(14, 18, 34, .96);--context-shadow: 0 8px 24px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .04);--inline-highlight-bg: rgba(74, 158, 255, .18);--inline-highlight-border: rgba(74, 158, 255, .55);--node-icon-color: rgba(255, 255, 255, .85);--scroll-thumb: rgba(255, 255, 255, .12);--scroll-thumb-hover: rgba(255, 255, 255, .22);--selection-bg: rgba(74, 158, 255, .3);--viewcube-face-bg: rgba(14, 21, 41, .88);--viewcube-face-text: rgba(255, 255, 255, .75);--viewcube-face-border: rgba(255, 255, 255, .12);--viewcube-face-hover-bg: rgba(74, 158, 255, .25);--viewcube-face-hover-text: #ffffff;--viewcube-face-hover-border: rgba(74, 158, 255, .5);--viewport-toolbar-bg: rgba(10, 14, 28, .88);--viewport-toolbar-border: rgba(255, 255, 255, .08);--viewport-toolbar-shadow: 0 4px 16px rgba(0, 0, 0, .3);--viewport-toolbar-sep: rgba(255, 255, 255, .1);--viewport-toolbar-btn: rgba(255, 255, 255, .65);--viewport-toolbar-btn-hover-bg: rgba(255, 255, 255, .06);--viewport-toolbar-btn-hover-text: rgba(255, 255, 255, .9);color-scheme:dark;color:var(--text);background:var(--bg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";font-size:13px;line-height:1.4;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:root[data-theme=light]{--bg: #f3f6fb;--panel: #ffffff;--panel2: #edf2f8;--surface-raised: rgba(15, 23, 42, .04);--surface-hover: rgba(15, 23, 42, .08);--stroke: rgba(15, 23, 42, .17);--stroke-focus: rgba(47, 109, 224, .42);--text: rgba(15, 23, 42, .94);--muted: rgba(15, 23, 42, .62);--dim: rgba(15, 23, 42, .4);--accent: #2f6de0;--accent-muted: rgba(47, 109, 224, .14);--accent-hover: #245ac0;--good-bg: rgba(24, 152, 101, .14);--warn-bg: rgba(185, 128, 33, .16);--bad-bg: rgba(191, 56, 86, .14);--topbar-bg: linear-gradient(180deg, rgba(255, 255, 255, .95), rgba(245, 248, 252, .92));--pane-shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 8px 24px rgba(15, 23, 42, .06);--subtle-bg: rgba(15, 23, 42, .03);--elevated-border: rgba(15, 23, 42, .16);--chat-shell-bg: linear-gradient(180deg, rgba(15, 23, 42, .02), rgba(15, 23, 42, 0));--chat-history-bg: linear-gradient(180deg, rgba(15, 23, 42, .02), rgba(15, 23, 42, .005));--chat-bubble-ai-bg: rgba(255, 255, 255, .92);--chat-bubble-ai-border: rgba(15, 23, 42, .18);--chat-bubble-user-bg: rgba(47, 109, 224, .16);--chat-bubble-user-border: rgba(47, 109, 224, .33);--chat-input-bg: linear-gradient(180deg, rgba(255, 255, 255, .95), rgba(242, 246, 252, .95));--chat-textarea-bg: rgba(255, 255, 255, .98);--modal-bg: rgba(255, 255, 255, .98);--modal-title-bg: rgba(15, 23, 42, .04);--modal-shadow: 0 20px 48px rgba(15, 23, 42, .22), 0 0 0 1px rgba(15, 23, 42, .08);--context-bg: rgba(255, 255, 255, .98);--context-shadow: 0 8px 22px rgba(15, 23, 42, .18), 0 0 0 1px rgba(15, 23, 42, .08);--inline-highlight-bg: rgba(47, 109, 224, .18);--inline-highlight-border: rgba(47, 109, 224, .55);--node-icon-color: rgba(15, 23, 42, .78);--scroll-thumb: rgba(15, 23, 42, .22);--scroll-thumb-hover: rgba(15, 23, 42, .32);--selection-bg: rgba(47, 109, 224, .24);--viewcube-face-bg: rgba(255, 255, 255, .92);--viewcube-face-text: rgba(15, 23, 42, .82);--viewcube-face-border: rgba(15, 23, 42, .18);--viewcube-face-hover-bg: rgba(47, 109, 224, .2);--viewcube-face-hover-text: rgba(15, 23, 42, .95);--viewcube-face-hover-border: rgba(47, 109, 224, .46);--viewport-toolbar-bg: rgba(255, 255, 255, .9);--viewport-toolbar-border: rgba(15, 23, 42, .16);--viewport-toolbar-shadow: 0 4px 14px rgba(15, 23, 42, .18);--viewport-toolbar-sep: rgba(15, 23, 42, .18);--viewport-toolbar-btn: rgba(15, 23, 42, .7);--viewport-toolbar-btn-hover-bg: rgba(15, 23, 42, .08);--viewport-toolbar-btn-hover-text: rgba(15, 23, 42, .95);color-scheme:light}html,body,#app{height:100%;margin:0;overflow:hidden}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.app{height:100%;display:flex;flex-direction:column;overflow:hidden}.topbar{height:44px;display:flex;align-items:center;gap:12px;padding:0 16px;background:var(--topbar-bg);border-bottom:1px solid var(--stroke);flex-shrink:0;z-index:20;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.topbar-left{display:flex;align-items:center;gap:10px;flex-shrink:0}.topbar-center{flex:1;display:flex;align-items:center;gap:8px;justify-content:center;min-width:0}.topbar-right{display:flex;align-items:center;gap:8px;flex-shrink:0}.topbar-info,.topbar-save{font-size:11px;white-space:nowrap}.brand{font-weight:700;letter-spacing:.06em;font-size:13px;text-transform:uppercase;cursor:pointer;-webkit-user-select:none;user-select:none;color:var(--accent);transition:opacity var(--speed)}.brand:hover{opacity:.8}.status{font-size:11px;padding:4px 10px;border:1px solid var(--stroke);border-radius:var(--radius-pill);color:var(--muted);justify-self:start;transition:color var(--speed),background var(--speed),border-color var(--speed)}.status[data-status=idle]{color:var(--good);background:var(--good-bg);border-color:#5ee8b033}.status[data-status=queued],.status[data-status=compiling]{color:var(--warn);background:var(--warn-bg);border-color:#f0c06033}.status[data-status=error]{color:var(--bad);background:var(--bad-bg);border-color:#f0708033}.layout{flex:1;display:grid;grid-template-columns:clamp(360px,26vw,460px) minmax(0,1fr) minmax(0,1.35fr);grid-template-rows:1fr;gap:8px;padding:8px;min-height:0;overflow:hidden}.pane{background:var(--panel);border:1px solid var(--stroke);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;min-height:0;box-shadow:var(--pane-shadow)}.pane-title{padding:10px 14px;font-size:11px;color:var(--muted);border-bottom:1px solid var(--stroke);background:var(--surface-raised);text-transform:uppercase;letter-spacing:.05em;font-weight:500}.pane-title-flex{display:flex;align-items:center;justify-content:space-between;gap:10px}.tabs{display:inline-flex;gap:6px;align-items:center}.tab{border-radius:var(--radius-pill);border:1px solid var(--stroke);background:transparent;color:var(--muted);padding:4px 10px;cursor:pointer;font-size:11px;transition:all var(--speed);letter-spacing:.02em}.tab:hover{color:var(--text);background:var(--surface-hover)}.tab[data-active=true]{background:var(--accent-muted);color:var(--accent);border-color:#4a9eff40}.tab[data-has-errors=true]{color:var(--error, #f44)}.tab[data-has-errors=true][data-active=true]{color:var(--error, #f44);background:#ff44441a;border-color:#ff444440}.editor-host{flex:1;min-height:0}.pane-chat{grid-column:1 / 2;grid-row:1 / 2}.pane-editor{grid-column:2 / 3;grid-row:1 / 2}.pane-viewport{grid-column:3 / 4;grid-row:1 / 2}.layout.layout-editor-collapsed{grid-template-columns:clamp(360px,26vw,460px) minmax(0,1fr);grid-template-rows:1fr}.layout.layout-editor-collapsed .pane-chat{grid-column:1 / 2;grid-row:1 / 2}.layout.layout-editor-collapsed .pane-viewport{grid-column:2 / 3;grid-row:1 / 2}.btn{border-radius:var(--radius);border:1px solid var(--stroke);background:var(--surface-raised);color:var(--text);padding:7px 14px;cursor:pointer;font-size:12px;transition:all var(--speed);font-weight:500}.btn:hover{background:var(--surface-hover);border-color:#ffffff24}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-sm{padding:5px 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var(--stroke);border-radius:var(--radius);padding:10px 12px;background:var(--surface-raised);transition:border-color var(--speed),background var(--speed)}.chat-welcome-feat:hover{border-color:#4a9eff33;background:var(--surface-hover)}.chat-welcome-feat-title{font-size:12px;font-weight:600;margin-bottom:3px}.chat-welcome-feat-desc{font-size:11px;color:var(--muted);line-height:1.4}.chat-msg{display:flex;flex-direction:column;align-self:flex-start;max-width:92%;padding:10px 12px;border:1px solid var(--chat-bubble-ai-border);border-radius:14px;background:var(--chat-bubble-ai-bg)}.chat-msg[data-role=user]{align-self:flex-end;background:var(--chat-bubble-user-bg);border-color:var(--chat-bubble-user-border)}.chat-role{display:none}.chat-text{margin:0;white-space:pre-wrap;word-break:break-word;font-size:13px;line-height:1.6}.chat-tools{border:1px solid var(--stroke);border-radius:12px;padding:8px 10px;background:#ffffff05}.chat-tools-pre{margin:8px 0 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chat-login-flow-slide{0%{transform:translate(-80%)}50%{transform:translate(60%)}to{transform:translate(220%)}}@keyframes chat-login-flow-fill{0%{opacity:.8}to{opacity:1}}.chat-send{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px}.chat-send .btn{min-width:72px}.chat-hint{font-size:10px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:grid;place-items:center;z-index:100}.modal{width:min(520px,calc(100vw - 24px));border:1px solid var(--elevated-border);border-radius:16px;background:var(--modal-bg);box-shadow:var(--modal-shadow);overflow:hidden;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.modal-title{padding:12px 14px;border-bottom:1px solid var(--stroke);font-size:12px;color:var(--muted);background:var(--modal-title-bg)}.modal-body{padding:12px 14px;font-size:12px}.modal-actions{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}.modal-footer{padding:12px 14px;border-top:1px solid var(--stroke);display:flex;justify-content:flex-end;gap:8px}.modal-wide{width:min(860px,calc(100vw - 24px))}.pricing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:stretch}.pricing-card{border:1px solid var(--stroke);border-radius:var(--radius-lg);padding:18px 16px;display:flex;flex-direction:column;gap:12px;background:var(--surface-raised);transition:border-color var(--speed)}.pricing-card-highlight{border-color:var(--accent);background:var(--accent-muted)}.pricing-card-packs{grid-column:1 / -1}.pricing-plan{font-size:13px;font-weight:600;letter-spacing:.02em}.pricing-price{font-size:28px;font-weight:700;letter-spacing:-.02em}.pricing-period{font-size:12px;font-weight:400;color:var(--muted)}.pricing-features{list-style:none;margin:0;padding:0;font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:6px}.pricing-features li:before{content:"✓ ";color:var(--good)}.pricing-cta{margin-top:auto}.pricing-cta .btn{width:100%;text-align:center}.pricing-pack-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;align-items:stretch}.pricing-pack-item{border:1px solid var(--stroke);border-radius:10px;padding:12px;background:var(--surface);display:flex;flex-direction:column;gap:8px;min-height:180px}.pricing-pack-header{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.pricing-pack-name{font-size:12px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}.pricing-pack-price{font-size:16px;font-weight:700}.pricing-pack-credits{font-size:24px;font-weight:800;letter-spacing:-.02em}.pricing-pack-meta{font-size:11px;color:var(--muted);line-height:1.3;min-height:2.8em}.pricing-pack-item .btn{margin-top:auto;width:100%}@media(max-width:900px){.pricing-pack-list{grid-template-columns:repeat(2,minmax(0,1fr))}}.pricing-note{margin-top:12px;text-align:center;font-size:11px}@media(max-width:600px){.pricing-grid,.pricing-pack-list{grid-template-columns:1fr}.modal-wide{width:calc(100vw - 16px)}}@media(max-width:1100px){.layout{grid-template-columns:320px minmax(0,1fr);grid-template-rows:1fr 1fr}.pane-chat{grid-column:1 / 2;grid-row:1 / 3}.pane-editor{grid-column:2 / 3;grid-row:1 / 2}.pane-viewport{grid-column:2 / 3;grid-row:2 / 3}.topbar{height:auto;flex-wrap:wrap;padding:8px 12px}.topbar-center{order:3;flex-basis:100%;justify-content:flex-start}.topbar-right{flex-wrap:wrap;justify-content:flex-end}.layout.layout-editor-collapsed{grid-template-columns:320px minmax(0,1fr);grid-template-rows:1fr}.layout.layout-editor-collapsed .pane-chat{grid-column:1 / 2;grid-row:1 / 2}.layout.layout-editor-collapsed .pane-viewport{grid-column:2 / 3;grid-row:1 / 2}}@media(max-width:1300px){.select-compact{min-width:78px}}.viewport{flex:1;min-height:0;position:relative;background:var(--panel2)}.three-host{position:absolute;top:0;right:0;bottom:0;left:0}.viewport-drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:7;pointer-events:none;opacity:0;border:1px dashed transparent;background:linear-gradient(180deg,#4a9eff14,#4a9eff05 24%,#4a9eff03);transition:opacity .12s ease,border-color .12s ease}.viewport-drop-overlay.is-active{opacity:1;border-color:#4a9eff73}.viewport-drop-hint{position:absolute;top:10px;left:50%;transform:translate(-50%);padding:3px 10px;border-radius:999px;border:1px solid rgba(74,158,255,.45);background:#0b1020d9;color:#ffffffdb;font-size:11px;letter-spacing:.02em;white-space:nowrap}:root[data-theme=light] .viewport-drop-overlay{background:linear-gradient(180deg,#2f6de01a,#2f6de008 24%,#2f6de005)}:root[data-theme=light] .viewport-drop-overlay.is-active{border-color:#2f6de073}:root[data-theme=light] .viewport-drop-hint{border-color:#2f6de06b;background:#ffffffed;color:#0f172acc}.viewport-drop-marker{position:absolute;z-index:8;width:14px;height:14px;border-radius:999px;border:2px solid rgba(74,158,255,.95);background:#4a9eff33;box-shadow:0 0 0 5px #4a9eff24;transform:translate(-50%,-50%) scale(.8);opacity:0;pointer-events:none;transition:opacity .1s ease,transform .1s ease,border-color .1s ease,background .1s ease}.viewport-drop-marker.is-visible{opacity:1;transform:translate(-50%,-50%) scale(1)}.viewport-drop-marker.is-invalid{border-color:#f07080f2;background:#f0708033;box-shadow:0 0 0 5px #f0708021}.props{border-top:1px solid var(--stroke);background:var(--subtle-bg);padding:10px 12px;max-height:280px;overflow:auto}.props-title{font-size:12px;color:var(--muted);margin-bottom:8px}.props-empty{font-size:12px;color:var(--muted)}.props-body{display:flex;flex-direction:column;gap:8px;font-size:12px}.props-block{margin-top:4px}.props-subtitle{font-size:11px;color:var(--muted);margin:6px 0;text-transform:uppercase;letter-spacing:.06em}.props-note{margin-top:6px}.props-row{display:grid;grid-template-columns:90px 1fr;gap:10px;align-items:center}.props-k{color:var(--muted)}.props-v{color:var(--text)}.props-inline{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.pill{display:inline-flex;gap:6px;align-items:center;border:1px solid var(--stroke);border-radius:999px;padding:4px 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.dim-label{background:#ffffffe6;color:#0f172ad9;border-color:#0f172a33}.shape-library{border-top:1px solid var(--stroke);background:var(--surface-raised);flex-shrink:0}.shape-library-header{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;cursor:pointer;-webkit-user-select:none;user-select:none}.shape-library-title{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-weight:500}.shape-library-toggle{padding:2px 6px!important;font-size:13px!important}.shape-library-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;padding:0 8px 8px}.shape-library-item{display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 4px;border:1px solid var(--stroke);border-radius:var(--radius);background:transparent;color:var(--muted);cursor:pointer;transition:all 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var(--speed)}.history-item:hover{background:var(--surface-hover)}.history-item-current{background:var(--accent-muted);border-left:3px solid var(--accent);font-weight:600}.history-item-redo{opacity:.45}.history-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-transform:capitalize}.history-time{font-size:10px;flex-shrink:0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.export-stats{padding:6px 12px;font-size:11px;color:var(--muted);border-bottom:1px solid var(--stroke);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.coord-display{position:absolute;bottom:8px;left:8px;z-index:5;padding:3px 8px;border-radius:6px;background:#000000a6;color:#ffffffbf;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:10px;white-space:nowrap;pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}:root[data-theme=light] .coord-display{background:#ffffffd9;color:#0f172ab3}.workplane-gear-btn{position:absolute;bottom:8px;right:8px;z-index:6;display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:6px;background:#0000008c;color:#ffffffb3;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:background .15s}.workplane-gear-btn:hover{background:#000000bf;color:#fff}:root[data-theme=light] .workplane-gear-btn{background:#fffc;color:#0f172a99}:root[data-theme=light] .workplane-gear-btn:hover{background:#fffffff2;color:#0f172ae6}.workplane-settings{position:absolute;bottom:44px;right:8px;z-index:20;width:240px;border-radius:10px;background:#0c1121f2;border:1px solid rgba(255,255,255,.1);box-shadow:0 8px 24px #00000080;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);color:#ffffffd9;font-size:12px}:root[data-theme=light] .workplane-settings{background:#fffffff5;border:1px solid rgba(15,23,42,.12);box-shadow:0 8px 24px 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input[type=checkbox]{width:14px;height:14px;cursor:pointer}.workplane-size-group{display:flex;flex-direction:column;gap:4px;flex:1;min-width:0;max-width:140px}.workplane-size-group .select-compact{max-width:none}.workplane-custom-input{display:flex;align-items:center;gap:4px}.input-compact{width:100%;padding:3px 6px;border-radius:4px;border:1px solid rgba(255,255,255,.15);background:#ffffff0f;color:inherit;font-size:11px;font-family:inherit;outline:none}.input-compact:focus{border-color:var(--accent, #3b82f6)}:root[data-theme=light] .input-compact{border:1px solid rgba(15,23,42,.15);background:#0f172a0a}.workplane-input-unit{font-size:10px;opacity:.5;white-space:nowrap}@media(max-width:768px){.toolbar-btn{padding:8px 10px;min-height:36px}.toolbar-label{display:none!important}.viewport-toolbar{padding:4px 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