:root{--ink:#24364b;--muted:#78879a;--line:#dfe5ed;--green:#168573;--mint:#e7f4f0;--paper:#fff;--bg:#f4f6f9;--accent:#e87e50}*{box-sizing:border-box}body{margin:0;color:var(--ink);font:13px 'Segoe UI',system-ui,sans-serif;background:var(--bg)}button,input,select,textarea{font:inherit}button{border:1px solid var(--line);background:white;color:var(--ink);padding:8px 12px;border-radius:5px;cursor:pointer;transition:background .12s}button:hover{background:var(--mint);border-color:#a0cfc3}button:disabled{opacity:.45;cursor:wait}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--green);outline-offset:2px}button.primary{background:var(--green);border-color:var(--green);color:white}.danger{color:#b24036}input,select,textarea{width:100%;border:1px solid #d5dee8;border-radius:5px;padding:9px;background:white;color:var(--ink)}label{display:block;font-size:12px;color:#5d6f83;margin:12px 0}label input,label select{display:block;margin-top:6px}h2,h3,p{margin-top:0}h3{font-size:13px}p{line-height:1.65}hr{border:0;border-top:1px solid var(--line);margin:20px 0}.muted,small{color:var(--muted)}.error{color:#b13c34;min-height:16px}.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:1px;font-size:13px}.brand-icon{display:inline-grid;place-items:center;width:28px;height:28px;background:var(--green);color:white;border-radius:6px;font-weight:800;font-size:18px;letter-spacing:0}.brand small{font-size:10px;letter-spacing:1px;background:var(--mint);padding:4px 6px;border-radius:3px}.auth-screen{min-height:100dvh;display:grid;grid-template-columns:1.1fr 1fr;background:white}.auth-art{position:relative;overflow:hidden;background:#142f32;color:white;padding:45px 60px;display:flex;flex-direction:column;justify-content:space-between}.auth-art h1{font-size:clamp(32px,4vw,58px);letter-spacing:-2px;line-height:1.15;font-weight:600;margin:20px 0}.auth-art p{color:#c0d3d0;font-size:16px}.eyebrow{letter-spacing:2.5px;font-size:10px!important;font-weight:700;color:var(--green)}.auth-art .eyebrow{color:#79c6af}.auth-art svg{position:absolute;right:-150px;bottom:-130px;width:550px;color:#40716b;opacity:.35;pointer-events:none}.auth-art>div,.auth-art>small{z-index:1}.auth-form{display:grid;place-items:center;padding:45px}.auth-form form{max-width:360px;width:100%}.auth-form h2{font-size:30px;font-weight:600;letter-spacing:-1px;margin:12px 0}.auth-form p{color:var(--muted)}.auth-form label{margin-top:22px}.auth-form input{padding:12px}.auth-form .primary{width:100%;padding:13px;margin:8px 0 25px;text-align:left}.auth-form .primary span{float:right}.auth-form small{line-height:1.6}#workspace{height:100dvh;display:flex;flex-direction:column}[hidden]{display:none!important}.topbar{height:54px;flex-shrink:0;background:white;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--line)}.top-actions{display:flex;gap:7px}.top-actions button{border:0;background:transparent;font-size:12px}.menubar{display:flex;align-items:stretch;gap:5px;background:white;height:37px;padding:0 18px;border-bottom:1px solid var(--line);flex-shrink:0}.menubar button{border:0;border-radius:0;padding:8px 14px;background:transparent;color:#66798d}.menubar button.active{color:var(--green);border-bottom:2px solid var(--green);font-weight:600}#save-state{margin-left:auto;align-self:center;font-size:11px;color:var(--green)}.ribbon{min-height:102px;display:flex;background:linear-gradient(white,#fafbfd);padding:8px 12px 5px;border-bottom:1px solid var(--line);overflow-x:auto;gap:4px;flex-shrink:0}.ribbon-group{padding:0 12px;border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;flex-shrink:0}.ribbon-buttons{display:flex;gap:4px;flex:1;align-items:center}.ribbon-group>small{font-size:10px;margin-top:5px;color:#8a98a8}.ribbon button{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;min-width:57px;padding:7px 9px;background:transparent;border:1px solid transparent;font-size:11px}.ribbon button:hover,.ribbon button.active{background:var(--mint);border-color:#c3e1d8}.ribbon .icon{font-size:23px;line-height:26px;color:var(--green)}.ribbon select{font-size:11px;min-width:120px;max-width:175px;padding:7px;margin:0 2px}.document-bar{height:37px;display:flex;align-items:center;gap:10px;padding:0 18px;border-bottom:1px solid var(--line);background:#f7f9fb;flex-shrink:0;font-size:12px}.document-dot{width:7px;height:7px;border-radius:50%;background:var(--green)}.document-bar button{padding:2px 6px;border:0;background:transparent}#document-detail{margin-left:15px;color:#8a98a8;font-size:11px}.editor{display:flex;flex:1;min-height:200px;overflow:hidden}.layers-panel{width:232px;min-width:180px;resize:horizontal;background:white;border-right:1px solid var(--line);overflow:auto;padding:14px 12px}.panel-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.panel-title h2{margin:0;font-size:12px;font-weight:600}.panel-title button{padding:2px 7px;border:0;background:transparent}.layer-tools{display:flex;gap:5px;margin-bottom:14px}.layer-tools button{font-size:10px;padding:6px}.layer-row{display:flex;align-items:center;gap:6px;padding:9px 5px;border-radius:4px;cursor:pointer;border:1px solid transparent}.layer-row.active{background:var(--mint);border-color:#cde4de}.layer-row button{padding:2px;border:0;font-size:12px;background:transparent}.layer-row .swatch{width:13px;height:13px;border-radius:3px;padding:0}.layer-row .name{flex:1;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;font-size:12px}.layer-row small{font-size:10px}.objects-heading{margin-top:24px;border-top:1px solid var(--line);padding-top:18px}.object-row{display:flex;gap:8px;align-items:center;padding:7px;border-radius:4px;cursor:pointer;font-size:11px}.object-row.selected{background:var(--mint);color:var(--green)}.object-row span:last-child{margin-left:auto;color:var(--muted)}.drawing-area{position:relative;flex:1;min-width:0;background:#fcfdff;overflow:hidden}#drawing{display:block;width:100%;height:100%;touch-action:none;outline:none;cursor:crosshair}.canvas-tools{position:absolute;left:15px;top:16px;z-index:2;background:white;border:1px solid var(--line);border-radius:7px;box-shadow:0 3px 12px #1e354710;padding:5px;display:flex;flex-direction:column;gap:3px}.canvas-tools button{border:0;padding:7px 10px;font-size:18px}.empty-state{position:absolute;left:50%;top:45%;transform:translate(-50%,-50%);width:min(90%,450px);text-align:center;background:#fcfdfff0;padding:25px;pointer-events:auto}.empty-state h2{font-weight:500;font-size:21px;margin-top:18px}.empty-state 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1fr;gap:8px;font-size:11px}.sim-canvas{width:720px;max-width:83vw;height:400px;background:#182839;border-radius:6px;touch-action:none}.sim-controls{display:flex;gap:12px;align-items:center;margin-top:14px}.sim-controls input{flex:1}.sim-controls label{min-width:80px}.help-list{padding-left:18px;line-height:1.9;color:var(--muted)}@media(max-width:1000px){.options-panel{width:190px;padding:12px}.layers-panel{width:185px}.ribbon-group{padding:0 7px}.document-bar #document-detail{display:none}}@media(max-width:750px){.auth-screen{grid-template-columns:1fr}.auth-art{display:none}.auth-form{min-height:100dvh;padding:25px}.layers-panel{width:150px;min-width:130px}.options-panel{display:none}.topbar{padding:0 12px}.topbar .brand{font-size:11px}.topbar .brand small{display:none}.top-actions{gap:0}.top-actions button{font-size:10px;padding:6px}.menubar{padding:0;gap:0;overflow:auto}.menubar button{padding:8px 10px;font-size:11px}#save-state{display:none}.statusbar{gap:10px}.status-right{display:none}dialog{min-width:0;width:95vw;padding:18px}.ribbon{min-height:94px}}