:root{--bg-main:#0f172a;--bg-card:#1e293b;--bg-hover:#334155;--bg-input:#0f172a;--border-color:#334155;--border-focus:#38bdf8;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--accent-blue:#38bdf8;--accent-blue-hover:#0ea5e9;--accent-emerald:#10b981;--accent-amber:#f59e0b;--accent-rose:#f43f5e;--accent-indigo:#818cf8;--sidebar-width:380px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background-color:var(--bg-main);color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}.app-header{background:var(--bg-card);border-bottom:1px solid var(--border-color);padding:12px 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;z-index:20}.header-left{display:flex;align-items:center;gap:16px}.header-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary)}.header-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,#0ea5e9 0,#10b981 100%);border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:1.25rem;box-shadow:0 4px 12px rgba(14,165,233,.35)}.header-title-group h1{font-size:1.15rem;font-weight:700;display:flex;align-items:center;gap:8px}.header-badge{font-size:.72rem;background:rgba(56,189,248,.15);color:var(--accent-blue);padding:2px 8px;border-radius:12px;font-weight:500;border:1px solid rgba(56,189,248,.3)}.header-sub{font-size:.8rem;color:var(--text-secondary)}.header-actions{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:7px 14px;border-radius:8px;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .18s ease;border:1px solid transparent;user-select:none;text-decoration:none}.btn-sm{padding:5px 10px;font-size:.78rem;border-radius:6px}.btn-primary{background:#0284c7;color:#fff;border-color:#0284c7}.btn-primary:hover{background:#0369a1;border-color:#0369a1}.btn-accent{background:#059669;color:#fff;border-color:#059669}.btn-accent:hover{background:#047857;border-color:#047857}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border-color:var(--border-color)}.btn-secondary:hover{background:var(--bg-hover);border-color:#475569}.btn-danger{background:rgba(244,63,94,.15);color:#f43f5e;border-color:rgba(244,63,94,.3)}.btn-danger:hover{background:rgba(244,63,94,.25)}.btn-icon-only{padding:6px;width:32px;height:32px}.btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}.icon{width:16px;height:16px;stroke-width:2;stroke:currentColor;fill:none;stroke-linecap:round;stroke-linejoin:round}.app-layout{display:flex;flex:1;height:calc(100vh - 61px);position:relative;overflow:hidden}.app-sidebar{width:var(--sidebar-width);min-width:320px;background:var(--bg-card);border-right:1px solid var(--border-color);display:flex;flex-direction:column;height:100%;overflow-y:auto;z-index:10;box-shadow:4px 0 16px rgba(0,0,0,.15)}.sidebar-section{padding:16px;border-bottom:1px solid var(--border-color)}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-title{font-size:.9rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:8px}.tag-badge{font-size:.7rem;padding:2px 6px;border-radius:4px;font-weight:600}.tag-ref{background:rgba(16,185,129,.18);color:var(--accent-emerald);border:1px solid rgba(16,185,129,.35)}.tag-count{background:rgba(56,189,248,.18);color:var(--accent-blue);border:1px solid rgba(56,189,248,.35)}.form-group{margin-bottom:12px}.form-label{display:block;font-size:.78rem;color:var(--text-secondary);margin-bottom:6px;font-weight:500}.form-row{display:flex;align-items:center;gap:8px}.form-input{background:var(--bg-input);border:1px solid var(--border-color);color:var(--text-primary);padding:7px 10px;border-radius:6px;font-size:.88rem;outline:0;transition:all .15s ease;width:100%}.form-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 2px rgba(56,189,248,.2)}.form-select{background:var(--bg-input);border:1px solid var(--border-color);color:var(--text-primary);padding:7px 10px;border-radius:6px;font-size:.85rem;outline:0;cursor:pointer}.form-select:focus{border-color:var(--border-focus)}.ref-status-box{background:rgba(15,23,42,.6);border:1px dashed var(--border-color);border-radius:8px;padding:12px;font-size:.82rem}.ref-status-box.active{background:rgba(16,185,129,.08);border-color:var(--accent-emerald)}.ref-info-line{display:flex;justify-content:space-between;margin-bottom:6px;color:var(--text-secondary)}.ref-info-val{font-weight:600;color:var(--text-primary);font-family:monospace}.meas-list{display:flex;flex-direction:column;gap:10px;max-height:380px;overflow-y:auto;padding-right:4px}.meas-card{background:rgba(15,23,42,.7);border:1px solid var(--border-color);border-left:4px solid var(--accent-blue);border-radius:6px;padding:10px 12px;transition:all .15s ease;cursor:pointer;position:relative}.meas-card:hover{background:rgba(30,41,59,.9);border-color:#475569}.meas-card.selected{border-color:var(--accent-blue);box-shadow:0 0 0 1px var(--accent-blue);background:rgba(56,189,248,.08)}.meas-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.meas-card-title{font-size:.82rem;font-weight:600;display:flex;align-items:center;gap:6px;color:var(--text-primary)}.meas-card-color-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.meas-card-actions{display:flex;align-items:center;gap:4px}.meas-card-body{display:grid;grid-template-columns:1fr 1fr;gap:8px;background:rgba(0,0,0,.2);padding:8px;border-radius:4px}.meas-stat-item{display:flex;flex-direction:column}.meas-stat-label{font-size:.68rem;color:var(--text-muted)}.meas-stat-val{font-size:.95rem;font-weight:700;font-family:monospace;color:var(--text-primary)}.meas-stat-val.highlight{color:var(--accent-blue)}.meas-raw-px{font-size:.72rem;color:var(--text-muted);margin-top:4px;text-align:right;font-family:monospace}.meas-empty-hint{text-align:center;padding:30px 10px;color:var(--text-muted);font-size:.82rem}.app-stage{flex:1;background:#090d16;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;cursor:crosshair}.app-stage.panning{cursor:grab!important}.app-stage.is-panning{cursor:grabbing!important}.canvas-viewport{width:100%;height:100%;position:relative;overflow:hidden;user-select:none}#mainCanvas{position:absolute;top:0;left:0;transform-origin:0 0;box-shadow:0 8px 30px rgba(0,0,0,.5);background-image:linear-gradient(45deg,#182234 25%,transparent 25%),linear-gradient(-45deg,#182234 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#182234 75%),linear-gradient(-45deg,transparent 75%,#182234 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.dropzone-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(15,23,42,.92);display:flex;align-items:center;justify-content:center;z-index:15;padding:24px;backdrop-filter:blur(4px)}.dropzone-overlay.hidden{display:none}.dropzone-box{max-width:540px;width:100%;border:2px dashed var(--border-color);border-radius:16px;padding:40px 24px;text-align:center;transition:all .2s ease;background:var(--bg-card)}.dropzone-box.dragover,.dropzone-box:hover{border-color:var(--accent-blue);background:rgba(56,189,248,.05)}.dropzone-icon{width:56px;height:56px;margin:0 auto 16px;color:var(--accent-blue)}.dropzone-title{font-size:1.15rem;font-weight:700;margin-bottom:8px}.dropzone-desc{font-size:.85rem;color:var(--text-secondary);margin-bottom:20px;line-height:1.5}.canvas-bottom-bar{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);background:rgba(30,41,59,.88);border:1px solid var(--border-color);border-radius:30px;padding:6px 14px;display:flex;align-items:center;gap:10px;box-shadow:0 8px 24px rgba(0,0,0,.35);backdrop-filter:blur(8px);z-index:12}.zoom-badge{font-size:.78rem;font-weight:600;font-family:monospace;color:var(--text-primary);min-width:44px;text-align:center}.bar-divider{width:1px;height:18px;background:var(--border-color)}.stage-tip{font-size:.75rem;color:var(--text-secondary);display:flex;align-items:center;gap:6px}.loupe-box{position:absolute;width:130px;height:130px;border-radius:50%;border:3px solid var(--accent-blue);box-shadow:0 8px 24px rgba(0,0,0,.6);pointer-events:none;overflow:hidden;z-index:100;background:#000;display:none}.loupe-crosshair{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100%;height:100%;pointer-events:none}.loupe-crosshair::before{content:'';position:absolute;top:0;left:50%;width:1px;height:100%;background:rgba(56,189,248,.8)}.loupe-crosshair::after{content:'';position:absolute;top:50%;left:0;width:100%;height:1px;background:rgba(56,189,248,.8)}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:10px;z-index:9999;pointer-events:none}.toast{background:#1e293b;color:#fff;border:1px solid #38bdf8;border-radius:8px;padding:10px 16px;font-size:.85rem;box-shadow:0 8px 24px rgba(0,0,0,.3);display:flex;align-items:center;gap:8px;pointer-events:auto;animation:toastIn .2s ease forwards}@keyframes toastIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.help-card{font-size:.78rem;color:var(--text-secondary);line-height:1.6}.help-card ul{padding-left:18px;margin-top:6px}.help-card li{margin-bottom:4px}kbd{background:#334155;color:#f8fafc;padding:2px 5px;border-radius:4px;font-size:.7rem;border:1px solid #475569;font-family:inherit}@media (max-width:900px){.app-layout{flex-direction:column;height:auto}.app-sidebar{width:100%;min-width:100%;height:auto;max-height:480px}.app-stage{min-height:480px;height:60vh}}