.floating-panel-col{flex-direction:column}.floating-panel-row{flex-direction:row}.plane-flyout{position:absolute;left:calc(100% + 6px);top:0;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:8px;display:flex;flex-direction:column;gap:6px;min-width:130px;z-index:20;box-shadow:0 4px 24px #0006;animation:plane-fade .12s ease}@keyframes plane-fade{0%{opacity:0;transform:translate(-4px)}to{opacity:1;transform:translate(0)}}.plane-flyout-title{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);padding:2px 4px}.plane-flyout-options{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}.plane-option{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);padding:6px 0;font-size:11px;font-family:inherit;font-weight:600;cursor:pointer;transition:background .12s ease,color .12s ease}.plane-option:hover{background:var(--bg-active);color:var(--accent)}.dimensions-panel{background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;min-width:200px;max-width:240px;display:flex;flex-direction:column;gap:8px;font-size:12px;color:var(--text-primary);-webkit-user-select:none;user-select:none}.dimensions-header{font-size:11px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dimensions-hint{font-size:12px;line-height:1.45;color:var(--text-secondary);padding:8px 10px;background:rgba(56,189,248,.06);border-left:2px solid var(--accent);border-radius:3px;white-space:normal}.dimensions-grid{display:flex;flex-direction:column;gap:3px}.dim-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.dim-axis{font-weight:600;font-size:11px;width:14px}.dim-value{font-variant-numeric:tabular-nums;color:var(--text-primary)}.unit-segmented{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:var(--radius-sm);padding:2px;margin-top:2px}.unit-segment{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;padding:5px 0;font-size:11px;font-family:inherit;font-weight:500;color:var(--text-secondary);cursor:pointer;border-radius:4px;transition:background .12s ease,color .12s ease;letter-spacing:.02em}.unit-segment:hover:not(.active){color:var(--text-primary);background:rgba(255,255,255,.04)}.unit-segment.active{background:var(--bg-active);color:var(--accent)}.unit-segment:focus-visible{outline:1px solid var(--accent);outline-offset:-1px}.section-toolbar{background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;min-width:360px;max-width:420px;display:flex;flex-direction:column;gap:10px;font-size:12px;color:var(--text-primary);-webkit-user-select:none;user-select:none}.section-row{display:flex;align-items:center;gap:10px}.section-label{font-size:11px;font-weight:600;color:var(--text-secondary);letter-spacing:.05em;min-width:36px}.plane-segmented{display:grid;grid-template-columns:repeat(3,1fr);background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:var(--radius-sm);padding:2px;flex:1}.plane-segment{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;padding:5px 0;font-size:11px;font-family:inherit;font-weight:600;color:var(--text-secondary);cursor:pointer;border-radius:4px;transition:background .12s ease,color .12s ease}.plane-segment:hover:not(.active){color:var(--text-primary);background:rgba(255,255,255,.04)}.plane-segment.active{background:var(--bg-active);color:var(--accent)}.section-slider{flex:1;accent-color:var(--accent)}.section-number{width:80px;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);padding:4px 6px;font-size:11px;font-family:inherit;font-variant-numeric:tabular-nums;outline:none}.section-number:focus{border-color:var(--accent)}.section-actions{display:flex;align-items:center;gap:8px}.section-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);padding:6px 14px;font-size:11px;font-family:inherit;font-weight:500;cursor:pointer;transition:background .12s ease}.section-btn:hover{background:rgba(255,255,255,.08)}.section-btn.primary{background:var(--bg-active);border-color:var(--accent);color:var(--accent)}.section-btn.primary:hover{background:rgba(56,189,248,.25)}.section-status{margin-left:auto;font-size:10.5px;color:var(--text-muted)}.sections-panel{background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:8px;min-width:240px;max-width:300px;display:flex;flex-direction:column;gap:4px;color:var(--text-primary);-webkit-user-select:none;user-select:none}.sections-header{display:flex;align-items:center;gap:8px;padding:4px 8px 6px;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-secondary);border-bottom:1px solid var(--border)}.sections-count{margin-left:auto;font-size:10px;background:rgba(255,255,255,.06);color:var(--text-primary);padding:1px 6px;border-radius:8px;letter-spacing:0}.sections-bulk-actions{display:flex;gap:2px;margin-left:4px}.sections-bulk-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;padding:4px;border-radius:4px;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .12s ease,color .12s ease}.sections-bulk-btn:hover:not(:disabled){background:rgba(56,189,248,.15);color:var(--accent, #38bdf8)}.sections-bulk-btn:disabled{opacity:.4;cursor:default}.sections-bulk-btn-danger:hover:not(:disabled){background:rgba(239,68,68,.15);color:var(--danger, #ef4444)}.sections-list{display:flex;flex-direction:column;gap:2px;max-height:280px;overflow-y:auto}.section-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:var(--radius-sm);cursor:pointer;transition:background .12s ease}.section-item:hover{background:rgba(255,255,255,.04)}.section-item.selected{background:var(--bg-active)}.section-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0;box-shadow:0 0 0 1px #ffffff1a}.section-info{flex:1;min-width:0}.section-name{font-size:12px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.section-name-input{width:100%;font-size:12px;font-family:inherit;color:var(--text-primary);background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:4px;padding:1px 4px;outline:none}.section-name-input:focus{border-color:var(--accent, #60a5fa);background:rgba(255,255,255,.1)}.section-detail{font-size:10.5px;color:var(--text-muted);font-variant-numeric:tabular-nums;margin-top:1px}.section-action,.section-delete{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;padding:4px;border-radius:4px;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:.7;transition:opacity .12s ease,background .12s ease,color .12s ease}.section-item:hover .section-action,.section-item:hover .section-delete{opacity:1}.section-action:hover{background:rgba(56,189,248,.15);color:var(--accent, #38bdf8)}.section-delete:hover{background:rgba(239,68,68,.15);color:var(--danger, #ef4444)}.confirm-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.55);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;z-index:10000;animation:confirm-modal-fade-in .12s ease}.confirm-modal{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px;max-width:360px;display:grid;grid-template-columns:auto 1fr;column-gap:12px;row-gap:4px;align-items:start;color:var(--text-primary);box-shadow:0 20px 50px #0009;animation:confirm-modal-scale-in .14s cubic-bezier(.16,1,.3,1)}.confirm-modal-icon{width:32px;height:32px;border-radius:50%;background:rgba(239,68,68,.15);color:var(--danger, #ef4444);display:flex;align-items:center;justify-content:center;flex-shrink:0;grid-row:1 / span 2}.confirm-modal-icon-warning{background:rgba(245,158,11,.15);color:#f59e0b}.confirm-modal-body{display:flex;flex-direction:column;gap:4px;min-width:0}.confirm-modal-title{font-size:13px;font-weight:600;color:var(--text-primary)}.confirm-modal-text{font-size:12px;color:var(--text-secondary, var(--text-muted));line-height:1.4}.confirm-modal-actions{grid-column:1 / -1;display:flex;justify-content:flex-end;gap:6px;margin-top:8px}.confirm-modal-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:rgba(255,255,255,.06);border:1px solid var(--border);color:var(--text-primary);font-size:12px;padding:6px 14px;border-radius:4px;cursor:pointer;transition:background .12s ease,border-color .12s ease;font-family:inherit}.confirm-modal-btn:hover{background:rgba(255,255,255,.1)}.confirm-modal-btn:focus-visible{outline:2px solid var(--accent, #38bdf8);outline-offset:1px}.confirm-modal-btn-danger{background:var(--danger, #ef4444);border-color:var(--danger, #ef4444);color:#fff}.confirm-modal-btn-danger:hover{background:#dc2626;border-color:#dc2626}.confirm-modal-btn-primary{background:var(--accent, #38bdf8);border-color:var(--accent, #38bdf8);color:var(--bg-primary, #0f0f1a);font-weight:600}.confirm-modal-btn-primary:hover{background:#0ea5e9;border-color:#0ea5e9}@keyframes confirm-modal-fade-in{0%{opacity:0}to{opacity:1}}@keyframes confirm-modal-scale-in{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}.save-options-modal{grid-template-columns:1fr;max-width:480px;width:90vw}.save-options-grid{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:8px}.save-option-card{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;color:var(--text-primary);font-family:inherit;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:6px;transition:background .12s 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solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);color:var(--text-secondary);cursor:grab;transition:background .15s ease,color .15s ease;flex-shrink:0;position:relative;z-index:2}.drag-handle:hover{background:rgba(255,255,255,.15);color:var(--text-primary)}.drag-handle.dragging{cursor:grabbing;background:var(--bg-active);color:var(--accent)}.draggable-wrapper>*:not(.drag-handle){border-top-left-radius:0!important;border-bottom-left-radius:0!important;border-left:none!important}.draggable-wrapper>*:not(.drag-handle)>.floating-panel{border-top-left-radius:0!important;border-bottom-left-radius:0!important;border-left:none!important}.settings-panel{width:320px;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 20px 60px 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var(--border);color:var(--text-primary);font-size:11px;font-family:inherit;border-radius:var(--radius-sm);cursor:pointer;margin-top:4px}.settings-btn:hover{background:rgba(255,255,255,.08);border-color:#ffffff26}.section-viewer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:rgba(0,0,0,.65);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:32px}.section-viewer-modal{position:relative;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;box-shadow:0 20px 60px 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var(--border);color:var(--text-muted);font-variant-numeric:tabular-nums}.section-viewer-fit-toolbar{position:absolute;top:12px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;padding:8px 12px;background:rgba(10,10,18,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:0 8px 24px #0006;-webkit-user-select:none;user-select:none;z-index:5}.fit-toolbar-hint{font-size:13px;color:var(--text-primary);margin-right:4px;font-variant-numeric:tabular-nums;letter-spacing:.01em}.hint-intro{color:var(--text-secondary);font-weight:500}.hint-shift{color:#fbbf24;font-weight:700}.hint-add{color:#22c55e;font-weight:600}.hint-remove{color:#ef4444;font-weight:600}.hint-sep{color:#ffffff40}.hint-count{color:#38bdf8;font-weight:700}.viewer-btn:disabled{opacity:.35;cursor:default}.viewer-btn:disabled:hover{background:rgba(255,255,255,.04);border-color:var(--border)}.app-switch{position:absolute;top:12px;left:50%;transform:translate(-50%);display:grid;grid-auto-flow:column;gap:2px;padding:2px;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:0 4px 24px #0006;z-index:30;-webkit-user-select:none;user-select:none}.app-switch-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;padding:5px 16px;font-size:11px;font-family:inherit;font-weight:600;letter-spacing:.03em;color:var(--text-secondary);text-decoration:none;border-radius:4px;cursor:pointer;transition:background .12s ease,color .12s ease}.app-switch-btn:hover:not(.active){color:var(--text-primary);background:rgba(255,255,255,.04)}.app-switch-btn.active{background:var(--bg-active);color:var(--accent);cursor:default}:root{--bg-primary: #0f0f1a;--bg-panel: rgba(15, 15, 26, .85);--bg-hover: rgba(255, 255, 255, .06);--bg-active: rgba(56, 189, 248, .15);--border: rgba(255, 255, 255, .08);--text-primary: #e2e8f0;--text-secondary: #94a3b8;--text-muted: #64748b;--accent: #38bdf8;--radius: 10px;--radius-sm: 6px}#root{display:flex;width:100%;height:100%;background:var(--bg-primary);color:var(--text-primary);position:relative}.viewport-container{flex:1;position:relative;overflow:hidden}.floating-panel{position:absolute;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:4px;display:flex;gap:2px;z-index:10;box-shadow:0 4px 24px #0006}.tool-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.tool-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.tool-btn.active{background:var(--bg-active);color:var(--accent)}.tool-btn:disabled{opacity:.4;cursor:default}.tool-btn:disabled:hover{background:transparent;color:var(--text-secondary)}.toolbar-divider{width:1px;margin:4px 2px;background:var(--border)}.floating-panel-col .toolbar-divider{width:auto;height:1px}.shortcut-hint{background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:8px 16px;display:flex;gap:16px;font-size:11px;color:var(--text-muted)}.shortcut-hint kbd{background:rgba(255,255,255,.08);border:1px solid var(--border);border-radius:3px;padding:1px 5px;font-family:inherit;font-size:10px;color:var(--text-secondary);margin-right:4px}.nav-help{position:absolute;bottom:16px;left:50%;transform:translate(-50%);display:flex;gap:18px;align-items:center;padding:7px 16px;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 4px 24px #0006;font-size:11px;color:var(--text-muted);-webkit-user-select:none;user-select:none;pointer-events:none;z-index:10}.nav-help span{display:inline-flex;align-items:center}.nav-help kbd{background:rgba(255,255,255,.08);border:1px solid var(--border);border-radius:3px;padding:1px 6px;font-family:inherit;font-size:10px;color:var(--text-secondary);margin-right:7px}.empty-state{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:5}.empty-state-panel{background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px dashed rgba(255,255,255,.18);border-radius:var(--radius);box-shadow:0 4px 24px #0006;padding:28px 36px;text-align:center;max-width:340px}.empty-state-title{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:6px}.empty-state-text{font-size:12px;line-height:1.5;color:var(--text-secondary)}.drop-active{position:absolute;top:0;right:0;bottom:0;left:0;border:2px dashed var(--accent);background:rgba(56,189,248,.06);pointer-events:none;z-index:60}.loading-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:rgba(15,15,26,.55);z-index:80}.loading-overlay-panel{display:flex;align-items:center;gap:10px;background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 4px 24px #0006;padding:14px 22px;font-size:13px;color:var(--text-primary)}.loading-spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.15);border-top-color:var(--accent);border-radius:50%;animation:loading-spin .8s linear infinite}@keyframes loading-spin{to{transform:rotate(360deg)}}.app-toast{position:fixed;bottom:64px;left:50%;transform:translate(-50%);background:var(--bg-panel);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 4px 24px #0006;padding:9px 16px;font-size:12px;color:var(--text-primary);pointer-events:none;z-index:200;max-width:420px;text-align:center}.error-boundary{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);color:var(--text-primary);z-index:500}.error-boundary-panel{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 4px 24px #0006;padding:28px 36px;text-align:center;max-width:380px}.error-boundary-title{font-size:15px;font-weight:600;margin-bottom:8px}.error-boundary-text{font-size:12px;line-height:1.5;color:var(--text-secondary);margin-bottom:16px}.error-boundary-btn{background:var(--bg-active);color:var(--accent);border:1px solid rgba(56,189,248,.4);border-radius:var(--radius-sm);padding:7px 18px;font-size:12px;font-family:inherit;cursor:pointer}.error-boundary-btn:hover{background:rgba(56,189,248,.25)}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.floating-panel{-webkit-user-select:none;user-select:none}.tooltip-portal{position:fixed;padding:5px 9px;background:rgba(15,23,42,.95);color:#e2e8f0;font-size:11px;line-height:1.35;border-radius:4px;border:1px solid rgba(255,255,255,.08);pointer-events:none;z-index:10000;box-shadow:0 2px 8px #0006;max-width:260px;white-space:normal;word-wrap:break-word}.tooltip-portal--right{transform:translateY(-50%)}.tooltip-portal--left{transform:translate(-100%,-50%)}