/* Application shell: the document stays fixed; each working pane scrolls. */
:root{--ink:#263e4b;--muted:#6a7b85;--paper:#f3f5f6;--line:#d8dfe3;--accent:#286b83;--font-body:'Trebuchet MS','Segoe UI',sans-serif;--mono:'Cascadia Code',Consolas,monospace;font-family:var(--font-body);color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;height:100vh;height:100dvh;overflow:hidden;display:grid;grid-template-rows:44px 46px minmax(0,1fr) 25px}button,input,select{font:inherit}button{cursor:pointer;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:4px;padding:6px 9px;font-size:12px;font-weight:500}button:hover:not(:disabled){background:#eaf1f4;border-color:#a9c1cc}button:disabled{opacity:.38;cursor:default}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid #287a9c;outline-offset:2px}button.primary{background:#236579;color:white;border-color:#236579}button.primary:hover:not(:disabled){background:#194d5e}button.quiet{background:transparent;border-color:transparent}button[aria-pressed=true],button[aria-expanded=true]{background:#e0edf2;border-color:#a6c4d0}select{color:var(--ink);border:1px solid var(--line);border-radius:3px;background:white;font-size:11px;padding:5px}svg{flex-shrink:0}
.app-header{display:flex;align-items:center;gap:12px;padding:0 12px;background:#fff;border-bottom:1px solid var(--line);min-width:0}.brand{display:flex;align-items:center;gap:7px;text-decoration:none;color:var(--ink);font-size:18px;font-weight:700;letter-spacing:-.8px}.brand-dot{color:#d97555}.header-divider{height:18px;border-left:1px solid var(--line)}#project-title{min-width:0;max-width:360px;flex:1;width:220px;background:transparent;border:1px solid transparent;border-radius:3px;color:var(--ink);padding:5px 7px;font-size:13px;text-overflow:ellipsis}#project-title:hover,#project-title:focus{border-color:var(--line);background:#f8fafb}#save-state{font-size:10px;color:var(--muted);margin-left:auto}.app-header #help{margin-left:auto;font-size:11px}
.command-bar{display:flex;align-items:center;gap:9px;padding:5px 10px;border-bottom:1px solid var(--line);background:#f4f6f7;min-width:0}.command-group{display:flex;gap:4px;align-items:center;flex-shrink:0}.command-group+.command-group{border-left:1px solid #d3dce1;padding-left:9px}.command-group button{display:flex;align-items:center;justify-content:center;gap:5px;height:32px;white-space:nowrap}.command-group svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linejoin:round}.file-commands>button>span[aria-hidden]{font-size:20px;line-height:1}.panel-commands{margin-left:auto}.speed-control select{height:30px;background:transparent;border-color:transparent;max-width:95px}.command-label{font-size:11px}
.workspace{min-height:0;min-width:0;display:grid;grid-template-columns:minmax(0,1fr) 300px;position:relative;overflow:hidden}.editor-panel{display:flex;flex-direction:column;min-width:0;min-height:0;background:white}.diagram-editor{flex:1;min-height:0;height:0;background:white;color:var(--ink);font-family:var(--font-body)}.flow-toolbar{display:none}.flow-controls{padding:0 10px;height:39px;flex-shrink:0;gap:8px;align-items:center;border-bottom:1px solid var(--line);background:#fafbfc}.flow-views,.flow-tools{gap:3px;flex-wrap:nowrap}.btn{padding:7px 10px;background:var(--ink);color:white;border:1px solid var(--ink);border-radius:4px;font:12px var(--font-body)}.btn.light{background:white;color:var(--ink);border-color:var(--line)}.flow-views .btn{height:38px;border:0;border-radius:0;background:transparent;border-bottom:2px solid transparent;font-size:11px;padding:9px 12px}.flow-views [aria-pressed=true]{background:white;color:var(--accent);border-bottom-color:var(--accent)}.flow-tools button{font:11px var(--font-body);padding:4px 7px;min-height:26px;background:transparent;border-color:transparent;color:var(--ink)}.flow-tools button:hover:not(:disabled){border-color:var(--line)}.flow-hint{display:none}.flow-stage{flex:1;min-height:0;height:auto}.flow-canvas{position:absolute;inset:0;height:100%;background-color:#fff;background-image:radial-gradient(#cdd8de .65px,transparent .65px);background-size:20px 20px}.flow-code{flex:1;min-height:0;height:auto}.flow-status{flex-shrink:0;padding:4px 12px;font-size:10px;line-height:1.5;max-height:48px;overflow:auto;background:#fafbfc;border-color:var(--line);color:var(--muted)}.flow-status:empty{display:none}.flow-zoom{right:12px;bottom:12px;padding:3px;gap:2px;background:#fffffff2;border-color:var(--line);border-radius:5px;box-shadow:0 2px 8px #263e4b10}.flow-zoom button{font:11px var(--font-body);min-height:26px;padding:4px 8px;border-color:transparent;color:var(--ink)}.source-bar{display:flex;gap:8px;align-items:center;flex-shrink:0;height:34px;padding:3px 10px;border-top:1px solid var(--line);background:#f8fafb;font-size:10px}.source-bar label{color:var(--muted)}.source-bar select{padding:3px 6px}.source-bar button{font-size:10px;padding:4px 7px}#export-svg{margin-left:auto}
.flow-node>rect,.flow-node>polygon{stroke-width:1.3}.flow-terminal rect{fill:#dfece5;stroke:#86a795}.flow-terminal text{fill:var(--ink);font-size:12px}.flow-assign>rect,.flow-declare>rect{fill:#f9edc6;stroke:#c6b579}.flow-if>polygon{fill:#f4ded6;stroke:#cd9b88}.flow-input>polygon{fill:#dcebf0;stroke:#8fb3c0}.flow-output>polygon{fill:#e4edd8;stroke:#a0b883}.flow-while>polygon,.flow-for>polygon,.flow-do>polygon{fill:#f6e6ce;stroke:#c8ab7c}.flow-node.is-current>rect,.flow-node.is-current>polygon{stroke:#cf704c;fill:#fff0df;stroke-width:3.5}.flow-edge{stroke:#7d919a}.flow-canvas marker path{fill:#7d919a}.flow-insert circle{stroke:#b3c4cb;fill:#fff}.flow-node.is-selected>rect,.flow-node.is-selected>polygon{stroke:#287a9c}
.pane-heading{height:34px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 12px;background:#f4f6f8;border-bottom:1px solid var(--line);gap:8px}.pane-heading h2{margin:0;font-size:11px;font-weight:700}.pane-heading button{font-size:10px;padding:3px 5px}.pane-heading>span{font:10px var(--mono);color:var(--muted)}.runtime-panel{display:flex;flex-direction:column;min-height:0;min-width:0;background:white;border-left:1px solid #c9d3db}.console-section{flex:1;display:flex;flex-direction:column;min-height:0}.execution-status{display:flex;justify-content:space-between;gap:8px;padding:7px 12px;font-size:10px;flex-shrink:0;border-bottom:1px solid #edf0f2;color:#527868}#step-count{font:10px var(--mono);color:var(--muted);white-space:nowrap}.console{flex:1;min-height:0;overflow:auto;padding:12px;color:#263e4b;font:12px/1.7 var(--mono);overflow-wrap:anywhere;overscroll-behavior:contain}.console p{margin:0 0 6px;white-space:pre-wrap}.console .console-empty{font:11px/1.7 var(--font-body);color:#8b979f}.console .prompt{color:#446c83}.console .input{color:#348368}.console .error{color:#ae442f}.console .system{color:#7d8b94;font-size:10px}#input-form{padding:10px 12px;background:#eef5f8;border-top:1px solid #cbdde5;flex-shrink:0;max-height:65%;overflow:auto}#input-label{font-size:11px;display:block;line-height:1.5;overflow-wrap:anywhere}.input-row{display:flex;gap:6px;margin-top:6px}.input-row input{width:100%;min-width:0;border:1px solid #a8bdc7;padding:7px;border-radius:3px;font:12px var(--mono)}.input-row button{background:var(--accent);color:white}#input-error{font-size:10px;color:#a03e24;margin:5px 0 0}.variables-section{height:32%;min-height:100px;display:flex;flex-direction:column;border-top:1px solid #c9d3db}#variables{flex:1;min-height:0;overflow:auto;padding:0 12px}.variables-empty{font-size:11px;color:#8b979f;line-height:1.7;margin:12px 0}#variables table{width:100%;border-collapse:collapse;font:11px var(--mono);table-layout:fixed}#variables td{border-bottom:1px solid #e5eaed;padding:9px 2px;vertical-align:top;overflow-wrap:anywhere}#variables td:last-child{text-align:right;color:#33765d;font-weight:bold}#variables td small{font:9px var(--font-body);color:#88969f;display:block;padding-top:4px}.workspace.runtime-hidden{grid-template-columns:minmax(0,1fr)}.runtime-hidden .runtime-panel{display:none}
.toolbox{display:none;position:absolute;left:0;top:0;bottom:0;width:200px;max-width:90%;overflow:auto;background:#f8fafb;border-right:1px solid #bdcdd6;box-shadow:7px 0 20px #263e4b18;z-index:30}.toolbox.is-open{display:block}.toolbox-intro{font-size:10px;line-height:1.6;color:var(--muted);padding:0 12px;margin:10px 0}.palette{display:grid;gap:3px;padding:0 7px}.palette button{display:grid;grid-template-columns:27px 1fr 12px;gap:8px;align-items:center;text-align:left;border-color:transparent;background:transparent;padding:8px 6px;font-size:11px}.palette button:hover{background:#e5edf2}.palette button small{color:#98a8b0;font-size:14px}.palette .symbol{width:22px;height:15px;border:1px solid #c7b46b;background:#f4e6af;border-radius:2px}.palette .symbol-if{transform:rotate(45deg);width:15px;height:15px;margin-left:3px;background:#f1d4ce;border-color:#c39a8b}.palette .symbol-while,.palette .symbol-for,.palette .symbol-do{transform:rotate(45deg);width:15px;height:15px;margin-left:3px;background:#f3dfc4;border-color:#c3a17b}.palette .symbol-input,.palette .symbol-output{transform:skewX(-15deg);background:#d9e7ed;border-color:#93b5c0}.palette .symbol-output{background:#e0ead3;border-color:#a8bb8c}.palette .symbol-comment{background:#e8eae4;border:1px dashed #a4b2a5}.examples-section{border-top:1px solid var(--line);margin-top:12px;padding:12px}.examples-section label{font-size:11px;display:block;margin-bottom:8px}.examples-section select{width:100%;font-size:11px;padding:7px}
.status-bar{display:flex;align-items:center;gap:18px;padding:0 10px;background:#ecf0f3;border-top:1px solid #ccd7de;font-size:10px;color:#6d7f8b;min-width:0}.status-ready{display:flex;align-items:center;gap:6px}.status-ready i{width:5px;height:5px;border-radius:50%;background:#6c9b86}.status-bar button{font-size:10px;padding:2px 3px;margin-left:auto;color:#6d7f8b}.shortcut-hint{font-size:9px}
dialog{border:1px solid #cbd5dd;border-radius:8px;background:#fff;color:var(--ink);padding:28px;width:min(640px,calc(100vw - 24px));max-height:88dvh;overflow:auto;box-shadow:0 20px 80px #14242133}dialog::backdrop{background:#203a465e}.dialog-close{position:absolute;right:12px;top:10px;border:0;background:transparent;font-size:24px}dialog h2{font-size:24px;letter-spacing:-.6px}dialog h3{font-size:14px;margin-top:23px}dialog p,dialog li{font-size:13px;line-height:1.8;color:#63747c}dialog code{font-size:11px;background:#edf1f4;padding:2px 5px;border-radius:3px}dialog.flow-dialog{font-family:var(--font-body);box-sizing:border-box}.flow-dialog .btn{color:white}.flow-dialog .btn.light{color:var(--ink)}.flow-dialog input,.flow-dialog select{font-size:13px}.eyebrow{font-size:10px;color:var(--muted);letter-spacing:1px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#toast{position:fixed;bottom:35px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:10px 18px;border-radius:5px;font-size:12px;box-shadow:0 4px 25px #14242144;z-index:1200;max-width:90vw}[hidden]{display:none!important}
@media(min-width:1700px){.workspace{grid-template-columns:minmax(0,1fr) 340px}}
@media(max-width:1000px){.workspace{grid-template-columns:minmax(0,1fr) 250px}.command-label{display:none}#save-state{font-size:9px}.flow-tools button{padding:4px 5px}.flow-controls{padding:0 6px}.flow-views .btn{padding:9px 8px}}
@media(max-width:700px){body{grid-template-rows:40px 44px minmax(0,1fr) 22px}.app-header{padding:0 8px;gap:7px}.brand{font-size:16px}.brand img{width:22px;height:22px}.brand>span{display:none}.header-divider{display:none}#project-title{font-size:12px;padding:5px;max-width:none}#save-state{display:none}.app-header #help{font-size:10px;padding:5px}.command-bar{gap:4px;padding:4px 6px}.command-group{gap:2px}.command-group+.command-group{padding-left:4px}.command-group button{padding:5px 7px;min-width:29px;height:30px}.panel-commands{gap:2px}.panel-commands #toolbox-toggle>span:last-child{display:none}.speed-control select{width:61px;font-size:10px;padding:4px 0}.workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) minmax(150px,28%)}.runtime-panel{border-left:0;border-top:1px solid #bdcdd6;flex-direction:row}.console-section{flex:1;min-width:0}.variables-section{height:auto;width:34%;min-width:100px;min-height:0;border-top:0;border-left:1px solid var(--line)}.pane-heading{height:28px;padding:0 9px}.pane-heading h2{font-size:10px}.execution-status{padding:4px 9px;font-size:9px}.console{font-size:11px;padding:8px 9px}#step-count{font-size:9px}#variables{padding:0 8px}#variables table{font-size:10px}.variables-empty{font-size:10px}.flow-controls{height:auto;min-height:66px;gap:0;padding:0 7px;align-content:center}.flow-views{width:100%;height:32px}.flow-views .btn{height:32px;padding:7px 10px}.flow-tools{height:31px;gap:4px}.flow-tools button{min-height:28px;padding:5px 9px}.source-bar{height:31px;padding:2px 7px;gap:5px;font-size:9px}.source-bar select{font-size:10px;max-width:95px}.source-bar button{font-size:9px;padding:4px}.source-bar label{font-size:9px}.flow-status{font-size:9px;padding:3px 8px;max-height:32px}.flow-zoom{right:7px;bottom:7px}.flow-zoom button{min-height:28px}.flow-shape-picker button{min-height:94px}.flow-dialog h2{font-size:20px}#input-form{padding:6px 9px;max-height:80%}#input-label{font-size:10px}.input-row{margin-top:4px}.input-row input{padding:5px}#input-error{font-size:9px}.status-bar{padding:0 8px;font-size:9px}.status-bar button{font-size:9px}.shortcut-hint{display:none}.workspace.runtime-hidden{grid-template-rows:minmax(0,1fr)}.toolbox{width:200px}.flow-context-menu button{min-height:40px}}
@media(max-height:550px) and (max-width:700px){.workspace{grid-template-columns:minmax(0,1fr) 170px;grid-template-rows:minmax(0,1fr)}.runtime-panel{border-top:0;border-left:1px solid var(--line);flex-direction:column}.variables-section{height:28%;min-height:55px;width:100%;border-left:0;border-top:1px solid var(--line)}.workspace.runtime-hidden{grid-template-columns:minmax(0,1fr)}}
.status-ready{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-bar>button{flex-shrink:0}.status-bar .shortcut-hint{flex-shrink:0}.status-bar .save-error{color:#a03e24;font-weight:bold}
@media(min-width:701px) and (max-width:1000px){.flow-controls{height:auto;min-height:39px}}
@media(max-width:360px){.command-bar{padding:4px;gap:2px}.command-group{gap:1px}.command-group+.command-group{padding-left:3px}.command-group button{min-width:26px;padding:4px 5px}.speed-control select{width:51px;font-size:9px}.status-bar{gap:8px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}