:root{--teal: #00A0B0;--teal-dark: #007780;--ink: #0F172A;--slate: #475569;--gray: #94A3B8;--line: #E2E8F0;--bg: #F1F5F9;--danger: #DC2626;--select: #2563EB;font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{color:var(--ink);background:var(--bg);font-size:13px}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit}.app{display:flex;flex-direction:column;height:100%}.app-body{display:flex;flex:1;min-height:0;user-select:none;-webkit-user-select:none}.app-body input,.app-body textarea{user-select:text;-webkit-user-select:text}.topbar{display:flex;align-items:center;gap:12px;height:50px;padding:0 12px;background:#0f172a;color:#fff;flex-shrink:0}.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:13.5px;flex-shrink:0}.save-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.save-saved{background:#34d399}.save-saving{background:#fbbf24}.save-error{background:#f87171}.gate-tabs{display:flex;align-items:center;gap:4px;overflow-x:auto;min-width:0}.gate-tab{display:flex;align-items:center;gap:6px;padding:5px 12px;border-radius:8px;cursor:pointer;font-size:12.5px;font-weight:600;color:#c7d2e1;white-space:nowrap;background:#ffffff0f}.gate-tab:hover{background:#ffffff1f}.gate-tab.active{background:var(--teal);color:#fff}.gate-tab input{width:110px;border:none;border-radius:4px;padding:2px 6px;font-size:12px}.tab-close{background:none;border:none;color:#ffffffbf;font-size:11px;padding:0 1px}.tab-close:hover{color:#fff}.gate-add{background:#ffffff1a;border:none;color:#fff;width:26px;height:26px;border-radius:8px;font-size:15px;font-weight:700;flex-shrink:0}.gate-add:hover{background:#fff3}.topbar-spacer{flex:1}.topbar-group{display:flex;gap:4px}.bp-controls{display:flex;align-items:center;gap:10px}.bp-page{display:flex;align-items:center;gap:5px;font-size:12px;color:#c7d2e1}.bp-page select{border-radius:5px;border:none;padding:2px 4px}.bp-scale{display:flex;align-items:center;gap:7px;font-size:11.5px;color:#c7d2e1}.bp-scale input[type=range]{width:110px}.btn{background:#fff;border:1px solid var(--line);color:var(--ink);border-radius:7px;padding:6px 12px;font-size:12.5px;font-weight:600}.btn:hover{background:#f8fafc}.btn:disabled{opacity:.45;cursor:default}.btn-primary{background:var(--teal);border-color:var(--teal);color:#fff}.btn-primary:hover:not(:disabled){background:var(--teal-dark)}.btn-sm{padding:4px 9px;font-size:12px;border-radius:6px}.btn.danger{color:var(--danger)}.topbar .btn:not(.btn-primary){background:#ffffff1a;border-color:transparent;color:#fff}.topbar .btn:not(.btn-primary):hover:not(:disabled){background:#fff3}.palette{width:210px;flex-shrink:0;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}.palette-head{padding:10px 14px;font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.7px;color:var(--slate);border-bottom:1px solid var(--line)}.palette-scroll{overflow-y:auto;padding:8px;flex:1}.palette-sep{height:1px;background:var(--line);margin:8px 4px}.palette-item{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:8px;cursor:grab;border:1px solid transparent}.palette-item.tool{cursor:pointer}.palette-item:hover{background:#f1f5f9}.palette-item.active{background:#e6f7f8;border-color:var(--teal)}.palette-icon{width:30px;height:30px;flex-shrink:0;display:flex}.palette-icon svg{width:100%;height:100%}.palette-label{font-size:12.5px;font-weight:600;display:flex;flex-direction:column;line-height:1.25}.palette-label em{font-style:normal;font-weight:400;font-size:10.5px;color:var(--gray)}.palette-foot{padding:10px 14px;font-size:10.5px;color:var(--gray);line-height:1.6;border-top:1px solid var(--line)}.place-done{margin:10px}.zoom-label{font-size:11.5px;color:#c7d2e1;min-width:38px;text-align:center}.editor-area{flex:1;position:relative;min-width:0;min-height:0;display:flex}.canvas-container{flex:1;position:relative;overflow:hidden;background:#dde4ec;min-height:0;user-select:none;-webkit-user-select:none}.tool-hint{position:absolute;bottom:14px;left:50%;transform:translate(-50%);background:#0f172ae0;color:#fff;padding:7px 14px;border-radius:8px;font-size:12px;pointer-events:none;white-space:nowrap;z-index:5}.text-edit-overlay{position:absolute;z-index:30;min-width:120px;min-height:30px;border:2px solid var(--select);border-radius:4px;background:#fff;padding:2px 6px;resize:none;font-weight:700;color:var(--ink)}.selection-bar{position:absolute;top:10px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px 10px;box-shadow:0 6px 20px #0f172a1f;z-index:6}.sel-name{font-size:12px;font-weight:700;color:var(--slate);margin-right:4px;white-space:nowrap}.sel-len{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--slate)}.sel-len input{width:80px}.counts-strip{position:absolute;bottom:10px;left:10px;display:flex;gap:14px;flex-wrap:wrap;max-width:calc(100% - 20px);background:#fffffff0;border:1px solid var(--line);border-radius:9px;padding:7px 12px;font-size:11.5px;color:var(--slate);z-index:5}.counts-strip b{color:var(--ink)}.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:4}.empty-card{pointer-events:auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 30px;text-align:center;max-width:340px;box-shadow:0 10px 34px #0f172a1f;display:flex;flex-direction:column;gap:12px;align-items:center}.empty-title{font-weight:700;font-size:15px}.empty-card p{font-size:12.5px;color:var(--slate);line-height:1.5}.empty-sub{font-size:11px!important;color:var(--gray)!important}