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.board-size-label{display:grid;gap:6px;margin:12px 0;font-size:14px}select{max-width:100%;padding:8px;border:1px solid #bdcbd7;border-radius:6px;background:white;color:#243f55;font:inherit}.library-grid{max-height:360px;overflow-y:auto}.input-control{width:100%;background:#e5f0fa;padding:12px}.property-field input[type=range]{width:100%}.property-field output{font-size:14px}.toolbar{flex-wrap:wrap}.readout{font-size:16px;line-height:1.6} .wire-tools label{display:flex;align-items:center;gap:6px}

#component-search{width:100%;padding:10px;margin:8px 0;border:1px solid #bdcbd7;border-radius:6px;font:inherit}.library-card[hidden]{display:none}.pin-list{max-height:180px;overflow:auto}.input-control{margin:5px 0}

#code-panel{flex:0 0 340px;min-height:240px;background:#f7fafc;border-top:1px solid #b8cbd9;display:flex;flex-direction:column}#code-panel[hidden]{display:none}.code-tools{display:flex;gap:6px;align-items:center;flex-wrap:wrap;padding:8px}.code-tools strong{margin-right:auto;font-size:14px}.code-columns{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(220px,1fr);flex:1;min-height:0}#sketch-editor{resize:none;width:100%;height:100%;min-height:140px;border:0;border-right:1px solid #b8cbd9;border-radius:0;padding:12px;background:#142b3d;color:#e5f0f7;tab-size:2;font:14px/1.5 monospace;white-space:pre}.code-console{display:flex;flex-direction:column;min-height:0;padding:8px;font-size:13px}.code-console pre{white-space:pre-wrap;overflow:auto;margin:4px 0;font:12px/1.4 monospace}#compile-output{max-height:85px;flex:0 0 auto}#serial-output{flex:1;min-height:45px;background:#fff;padding:6px}#serial-form{display:flex;gap:5px}#serial-input{flex:1;min-width:0}.code-note{margin:3px 8px;font-size:12px;color:#506b81}@media(max-width:760px){#code-panel{flex-basis:440px}.code-columns{grid-template-columns:1fr;grid-template-rows:180px 160px}.workbench:has(#code-panel:not([hidden])){height:1100px}}

.workbench:has(#code-panel:not([hidden])) #canvas-wrap{min-height:220px}#code-panel{max-height:55dvh;overflow:auto}.workbench:has(#code-panel:not([hidden])){overflow:auto}

#examples-dialog{width:min(1000px,94vw);max-height:88vh;overflow:auto;padding:28px;border:1px solid #bfcbd6;border-radius:16px;color:#253f54}#examples-dialog::backdrop{background:#102a43a6}#examples-dialog h2{margin-top:0}#examples-dialog>p{font-size:16px;line-height:1.5}.project-example-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.project-example-card{display:flex;flex-direction:column;align-items:stretch;text-align:left;padding:0 0 16px;overflow:hidden;border:1px solid #cbd8e3;border-radius:12px;background:white;white-space:normal}.project-example-card:hover{border-color:#276bd8;background:#f2f7ff}.project-example-card:focus-visible{outline:3px solid #276bd8;outline-offset:3px}.project-example-card svg{width:100%;height:155px;background:#edf3f8;pointer-events:none}.project-example-card strong{font-size:16px;margin:12px 14px 6px}.project-example-card span{font-size:14px;line-height:1.45;margin:0 14px;font-weight:400}#example-error{color:#a32e26}@media(max-width:760px){.project-example-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.project-example-grid{grid-template-columns:1fr}}

/* One selection outline; browser focus rings must not outline component hit boxes. */
.part-body:focus,.terminal-hit:focus,.board-frame:focus{outline:none}
.workbench:has(#code-panel:not([hidden])){display:grid;grid-template-columns:minmax(260px,1fr) minmax(330px,40%);grid-template-rows:minmax(0,1fr) auto;overflow:hidden}
.workbench:has(#code-panel:not([hidden])) #canvas-wrap{grid-column:1;grid-row:1;min-height:470px}
#code-panel{grid-column:2;grid-row:1;max-height:none;min-height:0;border-top:0;border-left:1px solid #b8cbd9;overflow:auto}
.workbench:has(#code-panel:not([hidden])) .statusbar{grid-column:1/-1;grid-row:2}
.code-columns{display:flex;flex-direction:column;min-height:380px}.code-columns #sketch-editor{flex:1;min-height:220px;border-right:0}.code-console{flex:0 0 210px;border-top:1px solid #b8cbd9}#serial-output{min-height:70px}
@media(max-width:1000px){.workbench:has(#code-panel:not([hidden])){grid-template-columns:1fr;grid-template-rows:450px 650px auto;height:auto}.workbench:has(#code-panel:not([hidden])) #canvas-wrap{grid-row:1;min-height:450px}#code-panel{grid-column:1;grid-row:2}.workbench:has(#code-panel:not([hidden])) .statusbar{grid-row:3}}

main{grid-template-columns:minmax(0,1fr) var(--library-width,294px)}aside,#code-panel{position:relative}.panel-divider{position:absolute;left:0;top:0;bottom:0;width:7px;background:#c5d4e2;cursor:col-resize;touch-action:none;z-index:5}.panel-divider:hover,.panel-divider:focus-visible{background:#317bdc;outline:none}.workbench:has(#code-panel:not([hidden])){grid-template-columns:minmax(260px,1fr) var(--code-width,40%)}#code-panel{padding-left:7px}@media(max-width:1000px){.panel-divider{display:none}.workbench:has(#code-panel:not([hidden])){grid-template-columns:1fr}}

.library{container-type:inline-size}.section-title{flex-wrap:wrap}.section-title select{font-size:12px;padding:5px;margin-left:auto}.menu-icon{width:17px;height:17px;flex:none;vertical-align:middle;margin-right:6px}.toolbar button,header>button{display:inline-flex;align-items:center;justify-content:center}.library-grid{grid-template-columns:repeat(auto-fit,minmax(100px,1fr))}.library-card small{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:12px;line-height:1.4}.library[data-view=list] .library-grid{grid-template-columns:1fr}.library[data-view=list] .library-card{display:grid;grid-template-columns:58px minmax(0,1fr);column-gap:10px;text-align:left;padding:10px}.library[data-view=list] .part-icon{grid-row:1/3;width:58px;height:65px}.library[data-view=list] .library-card strong{font-size:14px}.library[data-view=list] .library-card small{grid-column:2;-webkit-line-clamp:4}@container(max-width:235px){.library-grid{grid-template-columns:1fr!important}.library-card{display:grid;grid-template-columns:52px minmax(0,1fr);column-gap:8px;text-align:left;padding:9px}.library-card .part-icon{grid-row:1/3;width:52px;height:62px}.library-card strong{font-size:14px}.library-card small{grid-column:2;font-size:12px;-webkit-line-clamp:4}}

#serial-monitor[hidden],#serial-plot[hidden]{display:none}.code-console{flex:0 0 auto;max-height:55%;overflow:auto}#serial-monitor,#serial-plot{margin-top:8px}#serial-output{height:130px;overflow:auto}#serial-chart{width:100%;height:180px;display:block;background:#fff;border:1px solid #d5dfea}#plot-status{font-size:12px;line-height:1.6;margin:4px 0}#serial-plot small{font-size:12px;color:#62778a}#sketch-editor.editor-light{background:#fff;color:#213a50}#font-size{font-size:12px;color:#587086}.code-tools button[aria-pressed=true]{background:#dcecff;border-color:#77a5df}

.floating-properties{position:absolute;z-index:15;width:280px;padding:14px;background:#fff;border:1px solid #b8cbdc;border-radius:12px;box-shadow:0 8px 28px #15324b30;overflow:auto}.floating-properties[hidden]{display:none}.floating-properties .section-title{margin-bottom:8px}.floating-properties .section-title h2{font-size:14px}.floating-properties .section-title button{margin-left:auto;padding:1px 8px}.floating-properties .muted{font-size:12px;line-height:1.45}.floating-properties .pin-list{max-height:90px}.floating-properties .property-heading{font-size:15px}.local-sensor-controls:empty{display:none}.local-sensor-controls{padding:8px 0 12px;border-bottom:1px solid #dce6ed;margin-bottom:10px}.local-sensor-controls output{display:block;font-size:14px}.light-dial{width:84px;height:84px;border:6px solid #e3eaf1;border-radius:50%;margin:8px auto;position:relative;cursor:grab;touch-action:none}.light-dial span{position:absolute;left:33px;top:5px;height:31px;width:5px;background:#263f54;transform-origin:50% 31px;border-radius:3px}.local-range{display:block;font-size:14px;margin:10px 0}.local-range input{width:100%}.local-range output{float:right}.distance-stage{position:relative;width:244px;height:95px;background:#eef5fb;border-radius:8px}.distance-source{position:absolute;left:7px;top:31px;color:#31668d}.distance-source small{display:block;font-size:11px}.distance-beam{position:absolute;left:44px;top:46px;right:8px;border-top:2px dashed #6295bb}.distance-object{position:absolute;top:20px;width:27px;height:52px;padding:0;color:#995624;background:#efd2a4;cursor:ew-resize;touch-action:none}.canvas-note-editor{position:absolute;z-index:16;transform-origin:top left;width:240px;height:120px;resize:none;padding:10px;border:1px dashed #317bdc;border-radius:5px;background:#fffbe0;color:#384856;font:13px/17px system-ui}.canvas-note-editor[hidden]{display:none}

.code-tools{gap:4px;padding:6px;align-items:center}.code-tools strong{flex-basis:100%;font-size:13px}.code-tools button.compact-icon,button#library-toggle{width:28px;height:28px;min-width:28px;padding:5px;border-radius:5px;display:inline-flex;align-items:center;justify-content:center}.compact-icon svg{width:16px;height:16px;display:block}#font-size{font-size:11px;min-width:29px;text-align:center}main.library-hidden{grid-template-columns:minmax(0,1fr)}main.library-hidden>aside{display:none!important}

/* Compact single-row editing toolbar; small screens scroll instead of wrapping. */
.toolbar{flex-wrap:nowrap;gap:8px;padding:6px 14px;overflow-x:auto;min-height:46px}
.toolbar .tool-group{flex-wrap:nowrap;flex-shrink:0;gap:3px;padding-right:8px}
.toolbar .wire-tools{width:auto;margin-left:auto}
.toolbar button{width:41px;height:41px;min-width:41px;padding:6px;flex-shrink:0}
.toolbar button[hidden]{display:none}
.toolbar .menu-icon{width:27px;height:27px;margin:0}
.toolbar .wire-tools label{gap:5px;margin-right:0;font-size:13px}
.toolbar #wire-color{width:103px;padding:5px;font-size:13px;height:32px}

.board-surface{cursor:grab}

.brand-logo{display:block;width:170px;height:auto}.brand small{font-size:11px;letter-spacing:.1px;margin-top:1px}.brand{flex-shrink:0}

#cloud-status{padding:0;border:0;background:none;font-size:11px;color:#426b91;text-align:left;min-height:18px;line-height:18px;cursor:pointer}#cloud-dialog{width:min(820px,92vw);max-height:85vh}#cloud-dialog .cloud-actions{display:flex;gap:8px;flex-wrap:wrap}#cloud-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(185px,1fr));gap:12px}.cloud-card{border:1px solid #d6dfe9;border-radius:10px;padding:8px}.cloud-card>button:first-child{display:flex;flex-direction:column;width:100%;gap:7px;text-align:left;border:0;background:#f6f9fc}.cloud-card svg{width:100%;height:135px;pointer-events:none}.cloud-card small{font-size:11px;color:#667788}.cloud-card>button:last-child{margin-top:8px;font-size:12px}#cloud-message{font-size:13px;overflow-wrap:anywhere}
#share-dialog{width:min(540px,90vw)}#share-dialog label{display:flex;flex-direction:column;gap:7px;margin:14px 0}#share-dialog input,#share-dialog select{width:100%;box-sizing:border-box}#share-message{font-size:13px;overflow-wrap:anywhere}.shared-readonly .local-sensor-controls{opacity:.9}.shared-readonly .canvas-note-editor:read-only{background:transparent}
#shared-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(185px,1fr));gap:12px}.cloud-shared-card{display:flex;flex-direction:column;gap:7px;text-align:left;white-space:normal}.cloud-shared-card svg{width:100%;height:135px;pointer-events:none}.cloud-shared-card small{font-size:12px;color:#526779}.editor-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0}.editor-row span{overflow-wrap:anywhere;min-width:0}.editor-row button{flex-shrink:0}#cloud-conflict{padding:12px;border:1px solid #dba856;border-radius:8px;background:#fff8eb;margin:12px 0}#cloud-conflict button{margin:4px}#editor-form{display:flex;align-items:end;gap:8px;flex-wrap:wrap}#editor-form label{flex:1;min-width:200px}#editor-form button{margin-bottom:14px}
.code-control{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:6px 12px;background:#edf3fa;border-bottom:1px solid #ccd9e7;font-size:13px}.code-control[hidden]{display:none}.code-control button{padding:4px 8px;font-size:12px;min-height:28px}#code-request-list{display:flex;gap:6px;flex-wrap:wrap}#code-editor-owner{font-weight:600;margin-right:auto}

.teaching-tabs,.author-start,.author-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:16px 0}.teaching-tabs button[aria-pressed=true]{background:#e2edf9;border-color:#608abb}.teaching-tabs a{color:#285e93}.author-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px}.author-draft{display:block;width:100%;text-align:left;margin-bottom:8px}.teaching-author label{display:block;margin:12px 0;font-size:14px;font-weight:600}.teaching-author input:not([type=file]),.teaching-author textarea,.teaching-author select{display:block;box-sizing:border-box;width:100%;margin-top:5px;padding:9px;border:1px solid #bdcddd;border-radius:6px;font:inherit;background:white;color:#2a3f53}.author-pair{display:grid;grid-template-columns:1fr 100px;gap:14px}.teaching-preview{width:100%;height:190px;pointer-events:none}.author-actions button{font-size:14px}.author-import{border-top:1px solid #dce5ee;padding-top:16px}a.project-example-card{color:inherit;text-decoration:none}.learn-menu{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:5px;color:#496177;flex-shrink:0}.learn-menu:hover{background:#e5eef8}.teaching-author[hidden],#author-tools[hidden],#author-form[hidden],#example-gallery[hidden]{display:none!important}#author-status{color:#285e93;font-size:14px}@media(max-width:680px){.author-layout{grid-template-columns:1fr}.author-draft{display:inline-block;width:auto}.author-pair{grid-template-columns:1fr}}

.ai-panel{position:absolute;right:12px;top:12px;bottom:12px;width:min(410px,calc(100% - 24px));z-index:30;background:#fff;border:1px solid #bdcddd;border-radius:10px;box-shadow:0 8px 30px #233f5826;padding:16px;overflow:auto;box-sizing:border-box;font-size:14px}.ai-panel[hidden]{display:none}.ai-heading{display:flex;justify-content:space-between;align-items:center}.ai-panel textarea{display:block;box-sizing:border-box;width:100%;padding:10px;border:1px solid #bdcddd;border-radius:6px;font:inherit;margin:8px 0}.ai-panel button{margin:5px 6px 5px 0;font-size:14px}.ai-panel pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;background:#f0f5fa;padding:12px}.ai-panel #ai-chat{max-height:180px;overflow:auto}.ai-panel #ai-status{color:#315b82}.ai-panel details{margin:12px 0}.ai-panel li{margin-bottom:6px}.ai-panel .teaching-preview{height:210px}

/* One shared geometry for every main-menu feature, including links. */
.toolbar button,.toolbar a.learn-menu{display:inline-flex;align-items:center;justify-content:center;width:41px;height:41px;min-width:41px;flex:0 0 41px;padding:6px;box-sizing:border-box;margin:0}
.toolbar button svg,.toolbar a.learn-menu svg{display:block;width:27px;height:27px;flex:0 0 27px;margin:0}
.toolbar button[hidden]{display:none}


/* Circuit and arena occupy the same workbench viewport; the code editor stays available. */
#workspace-views{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0;grid-column:1;grid-row:1;overflow:hidden}
#workspace-tabs{display:flex;gap:4px;padding:8px 16px 0;background:#f8fbfd;border-bottom:1px solid #c8d7e1;flex:none}
#workspace-tabs[hidden]{display:none}
#workspace-tabs button{border:0;border-bottom:3px solid transparent;border-radius:6px 6px 0 0;padding:10px 18px;background:transparent;color:#526b80}
#workspace-tabs button[aria-selected=true]{color:#146b64;border-bottom-color:#168b7f;background:#e8f5f2;font-weight:650}
#workspace-stage{position:relative;flex:1;min-height:0;overflow:hidden;display:flex}
#workspace-views #canvas-wrap{min-height:0;width:100%}
#workspace-views.robot-active #canvas-wrap{visibility:hidden;pointer-events:none}
#robot-panel{position:absolute;inset:0;display:flex;flex-direction:column;min-width:0;min-height:0;padding:18px 24px;background:#f4f8fa;overflow:auto}
#robot-panel[hidden]{display:none}
#robot-panel p{flex:none;font-size:12px;color:#5c7389;margin:6px 0}
#robot-panel svg{display:block;flex:1;min-height:120px;width:100%;margin:12px 0}
#robot-panel output{display:block;flex:none;font-size:13px;font-variant-numeric:tabular-nums;color:#196b63}
.robot-heading,.robot-actions{display:flex;align-items:center;gap:12px;flex:none}
.robot-actions{margin-top:12px;flex-wrap:wrap}.robot-actions label{font-size:12px}.robot-actions input{width:72px;padding:6px}.robot-actions button{font-size:12px;padding:7px}
#code-panel .code-tools{flex-shrink:0;min-width:0;align-content:flex-start}
#code-board-name{flex:0 0 100%;min-width:0;white-space:normal;overflow-wrap:anywhere;line-height:1.5;padding:2px 0}
@media(max-width:1000px){.workbench:has(#code-panel:not([hidden])) #workspace-views{grid-column:1;grid-row:1;min-height:450px}}
@media(max-width:600px){#robot-panel{padding:12px}#workspace-tabs{padding:6px 8px 0}#workspace-tabs button{padding:9px 12px}}

/* Syntax colors overlay the native editable textarea, preserving accessibility and code locks. */
.sketch-surface{position:relative;flex:1;min-height:140px;min-width:0;background:#142b3d;overflow:hidden}
.sketch-colors{position:absolute;top:0;left:0;margin:0;border:0;white-space:pre;overflow:hidden;pointer-events:none;color:#e5f0f7;box-sizing:border-box;font:14px/1.5 monospace;tab-size:2}
.sketch-surface #sketch-editor{position:absolute;inset:0;background:transparent;color:transparent;-webkit-text-fill-color:transparent;caret-color:#e5f0f7;resize:none;min-height:0}
.sketch-surface #sketch-editor::selection{background:#3972a888}
.syntax-keyword{color:#c3a1ff}.syntax-builtin{color:#71d4e3}.syntax-constant{color:#ffbe73}.syntax-number{color:#b9df91}.syntax-string{color:#efd08c}.syntax-comment{color:#94adba}.syntax-directive{color:#e8a4ce}
.sketch-surface.editor-light{background:#fff}.editor-light .sketch-colors{color:#213a50}.sketch-surface.editor-light #sketch-editor{caret-color:#213a50}
.editor-light .syntax-keyword{color:#7139a7}.editor-light .syntax-builtin{color:#006c83}.editor-light .syntax-constant{color:#a64900}.editor-light .syntax-number{color:#356c11}.editor-light .syntax-string{color:#8e5900}.editor-light .syntax-comment{color:#607481}.editor-light .syntax-directive{color:#953f74}
@media(forced-colors:active){.sketch-colors{display:none}.sketch-surface #sketch-editor{color:CanvasText;-webkit-text-fill-color:CanvasText;caret-color:CanvasText}}

#robot-settings{flex:none;font-size:12px;margin-top:6px}#robot-settings summary{cursor:pointer;color:#286d77;font-weight:600}.robot-settings-body{max-height:230px;overflow:auto;padding:10px;background:#fff;border:1px solid #cad8df}.robot-settings-body form{display:flex;flex-wrap:wrap;align-items:end;gap:8px;margin:8px 0}.robot-settings-body label{display:flex;flex-direction:column;gap:3px}.robot-settings-body input{width:90px;padding:5px}.robot-settings-body select{max-width:170px;padding:5px}.robot-settings-body button{font-size:12px}.robot-actions input[type=checkbox]{width:auto}.robot-actions select{font-size:12px;padding:4px}

#course-editor { margin: 10px 0; padding: 10px; border: 1px solid #c5d4df; border-radius: 7px; }
#course-editor form { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; padding: 8px 0; border-bottom: 1px solid #dbe4ea; }
#course-editor label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; }
#course-editor input[type=number] { width: 100px; }
#course-editor textarea { width: 220px; font-family: monospace; }
#robot-scene { touch-action: none; }

#course-editor { flex: none; max-height: 340px; overflow: auto; }
#course-editor summary { position: sticky; top: -10px; background: #f4f8fa; padding: 6px 0; z-index: 1; cursor: pointer; }
#robot-panel #robot-scene { flex: 1 0 250px; min-height: 250px; }
#course-editor label:has(input[type=checkbox]) { flex-direction: row; align-items: center; }

.remote-keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;padding:10px;background:#303030;border-radius:12px}.remote-keypad button{font-size:11px;border-radius:24px;min-height:34px}.remote-keypad button:first-child{background:#eb4827;color:white}

#arena-drawing-tools{flex:none;margin:6px 0}.arena-tool-row{display:flex;gap:5px;flex-wrap:wrap}.arena-tool-row button{font-size:12px;padding:7px}.arena-tool-row button[aria-pressed=true]{background:#176b8e;color:white}#arena-precision{max-height:170px;overflow:auto;font-size:12px}#arena-object-form{display:flex;flex-wrap:wrap;gap:6px;padding:8px 0}#arena-object-form label{display:flex;flex-direction:column}#arena-object-form label[hidden]{display:none}#arena-object-form input{width:90px;padding:5px}#robot-scene [data-object-kind]{cursor:move}#robot-scene [data-arena-handle]{cursor:grab}

#robot-setup{flex:none;font-size:12px;border:1px solid #c5d4df;border-radius:7px;padding:8px;margin-bottom:8px}#robot-setup summary{cursor:pointer;font-weight:600;color:#286d77}#robot-setup form{display:flex;flex-wrap:wrap;gap:10px;padding:10px 0}#robot-setup label{display:flex;flex-direction:column;gap:4px}#robot-setup input{width:110px;padding:5px}#robot-setup select{max-width:220px;padding:5px}#robot-panel.needs-robot-setup>:not(#robot-setup){display:none}#mount-palette{display:flex;flex-wrap:wrap;gap:5px}#mount-palette button{font-size:11px;padding:5px;cursor:grab}#mount-palette button[aria-pressed=true]{background:#267fac;color:#fff}#robot-panel #mount-visual{height:270px;min-height:270px;flex:none;width:100%;touch-action:none;background:#edf4f8;border-radius:8px}.robot-settings-body{max-height:480px}#mount-visual [data-mount-id]{cursor:grab}

/* Selection follows painted component geometry, including rotation and mirroring. */
.part-body.part-selected{filter:drop-shadow(0 0 1px #287bdc) drop-shadow(0 0 2px #287bdc)}

/* Keep status messages clear of the window edges at every viewport size. */
.statusbar{padding:14px 24px;min-height:54px;line-height:1.5;flex-shrink:0}.statusbar #status{min-width:0;overflow-wrap:anywhere}

/* Header and toolbar heights vary; reserve the actual remaining viewport for the workbench. */
@media(min-width:1001px){body:has(>main){display:flex;flex-direction:column;height:100dvh}body>header,body>.toolbar{flex-shrink:0}body>main{flex:1;min-height:0;height:auto}.workbench{min-height:0}#canvas-wrap{min-height:0}}

/* Status text must wrap rather than be squeezed by counts or a fixed row. */
.statusbar{height:auto!important;min-height:58px;flex-wrap:wrap;overflow:visible;align-items:flex-start;gap:6px 14px}.statusbar #status{flex:1 1 240px;white-space:normal;overflow:visible;line-height:1.6;padding:2px 0}.statusbar #mode-label,.statusbar #counts{padding:4px 0;flex-shrink:0}.statusbar #counts{margin-left:auto}
aside>.diagnostics,aside>.quick-guide{display:none}aside>.library{flex:1;min-height:0;max-height:none}
#robot-panel.arena-maximized{position:fixed;inset:10px;z-index:100;background:#fff;display:flex;max-height:none;overflow:auto;border:1px solid #aabccb;box-shadow:0 5px 30px #1235;padding:14px}#robot-panel.arena-maximized #robot-scene{min-height:200px;flex:1 1 0}.robot-heading{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.robot-heading button{font-size:12px}.note-arrow-tools{position:absolute;left:16px;top:16px;z-index:20;display:flex;gap:6px}.note-arrow-tools[hidden]{display:none}

/* The library list uses the full sidebar scroll area. */
aside .library-grid{max-height:none;overflow:visible}

/* Keep arena geometry stable while controls expand below it. */
#arena-viewport{position:relative;flex:0 0 auto;height:clamp(320px,65vh,760px);min-height:320px}
#robot-panel #arena-viewport #robot-scene{height:100%;min-height:0;margin:0;width:100%}
#robot-panel #arena-scale{position:absolute;right:12px;bottom:10px;margin:0;padding:3px 6px;background:#f4f8fadd;border-radius:3px;pointer-events:none;font-size:12px}
#robot-panel .robot-note{display:none}
#robot-panel.arena-maximized #arena-viewport{height:72vh;flex:0 0 auto}

/* Keep arena tools visible while reclaiming space from the editing footer. */
.statusbar{min-height:30px;padding:4px 16px;gap:4px 10px;align-items:center;flex-wrap:nowrap}
.statusbar #status{flex:1 1 0;line-height:1.35;max-height:2.7em;overflow:auto;padding:0}
.statusbar #mode-label,.statusbar #counts{padding:0}
#robot-panel #arena-drawing-tools{position:sticky;top:-18px;z-index:3;background:#f4f8fa;padding:6px 0;margin:0;flex-shrink:0}

/* Compact header and spacious robot setup, without a nested scrolling form. */
header{min-height:64px;padding:6px 18px;gap:14px}.brand-logo{width:126px}.brand small{display:none}
#setup-save{padding:12px 20px;font-size:15px;align-self:center;box-shadow:0 2px 5px #164c7b24}
#robot-panel .robot-settings-body{max-height:none;overflow:visible;padding:12px}
#robot-panel #mount-form select{max-width:none;width:240px;max-width:100%}
#robot-panel #mount-form label{min-width:100px}
#mount-add{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:10px 0}
#mount-add select{max-width:250px}.mount-help{line-height:1.5}
#mount-visual-status{min-height:18px}
@media(min-width:1100px){#robot-settings .robot-settings-body{display:grid;grid-template-columns:minmax(260px,1fr) minmax(260px,1fr);gap:12px}#robot-settings .robot-settings-body>p,#robot-settings #mount-add,#robot-settings .mount-help,#robot-settings #mount-list,#robot-settings #environment-form{grid-column:1/-1}#mount-form{align-content:start}#robot-panel #mount-visual{height:330px;min-height:330px}}

#robot-panel.arena-configuring #arena-viewport,#robot-panel.arena-configuring #arena-drawing-tools,#robot-panel.arena-configuring>.robot-actions,#robot-panel.arena-configuring>#robot-reading{display:none}
#robot-panel .robot-heading{flex-wrap:wrap;gap:6px 10px}

.workbench:has(#robot-panel.arena-configuring:not([hidden])){grid-template-columns:minmax(0,1fr)}
.workbench:has(#robot-panel.arena-configuring:not([hidden])) #code-panel{display:none}
#robot-panel.arena-configuring>.robot-heading{position:sticky;top:-18px;background:#f4f8fa;z-index:4;padding:6px 0}
#mount-editor{display:flex;flex-direction:column;min-width:0}#mount-editor>p:first-child{order:0}#mount-editor #mount-visual{order:1}#mount-palette{order:2;max-height:110px;overflow:auto;align-content:start}#mount-visual-status{order:3}

/* Visual robot studio */
#robot-studio-tabs{display:flex;gap:6px;padding:8px 0;flex:none}#robot-studio-tabs button{padding:9px 24px;border-radius:20px}#robot-studio-tabs [aria-selected=true]{background:#226f80;color:white;border-color:#226f80}
#robot-panel #arena-setup-view,#robot-panel #arena-delete,#robot-panel .robot-heading>small{display:none}
#robot-panel[data-studio-tab] #robot-settings>summary,#robot-panel[data-studio-tab] #robot-setup>summary{display:none}
#robot-panel[data-studio-tab=arena] #robot-setup,#robot-panel[data-studio-tab=arena] #course-editor,#robot-panel[data-studio-tab=arena] .studio-steps{display:none}
#robot-panel[data-studio-tab=arena] #robot-settings .robot-settings-body>:not(#studio-ambient):not(#environment-form){display:none}
#robot-panel[data-studio-tab=arena] #robot-settings .robot-settings-body{display:block;border:0;padding:0;background:transparent}
#robot-panel[data-studio-tab=robot] #studio-presets,#robot-panel[data-studio-tab=robot] #course-editor,#robot-panel[data-studio-tab=robot] #environment-form,#robot-panel[data-studio-tab=robot] #studio-ambient,#robot-panel[data-studio-tab=robot] #arena-object-card{display:none}
#robot-panel[data-studio-tab=challenge] #robot-setup,#robot-panel[data-studio-tab=challenge] #robot-settings,#robot-panel[data-studio-tab=challenge] .studio-steps,#robot-panel[data-studio-tab=challenge] #studio-presets,#robot-panel[data-studio-tab=challenge] #arena-drawing-tools,#robot-panel[data-studio-tab=challenge] #arena-object-card{display:none}
#robot-panel #course-editor>:not(summary):not(#challenge-form):not(#course-status){display:none}
#robot-panel #robot-setup-form>label small,#robot-panel #robot-setup>p,#mount-list{display:none}
#studio-robot-advanced{flex-basis:100%;order:2}#studio-robot-advanced label{display:inline-flex;margin:8px}#studio-robot-advanced small{max-width:200px!important}#robot-setup>details{margin-top:8px}
#robot-panel[data-studio-tab=robot] .robot-settings-body{display:grid;grid-template-columns:minmax(240px,1fr) minmax(220px,.7fr)}#mount-editor{grid-column:1;grid-row:3/6}#mount-form{grid-column:2;grid-row:3/6;flex-direction:column;align-items:stretch!important}#studio-mount-precision label{display:inline-flex;margin:5px}#robot-panel #mount-visual{height:360px;min-height:360px}
#studio-presets{flex:none;margin:4px 0 10px}#studio-presets>div{display:flex;flex-wrap:wrap;gap:8px;padding:10px 0}#studio-presets button{padding:12px 18px;background:#fff}#studio-presets p{max-width:650px}
#studio-status:empty{display:none}#studio-tool-tip{margin:4px 0!important}#robot-panel .arena-tool-row button span{font-size:19px;margin-right:6px}#robot-panel [hidden]{display:none!important}
#arena-object-card{flex:none;border:1px solid #bad4db;border-radius:10px;background:#fff;padding:10px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:6px 0}#arena-object-card label{display:flex;align-items:center;gap:6px;font-size:12px}#arena-object-card input[type=range]{width:110px;padding:0}#arena-object-card details{flex-basis:100%}#arena-object-card #arena-precision{max-height:none;overflow:visible}
#studio-ambient label{display:inline-flex;align-items:center;gap:8px;margin:8px}#studio-ambient input{width:120px}#studio-environment-advanced{margin-top:12px}#studio-environment-advanced label{display:inline-flex;margin:8px}
#robot-panel.studio-empty #robot-settings,#robot-panel.studio-empty .studio-steps{display:none}#robot-panel.needs-robot-setup>#robot-setup{display:block}
#robot-panel .robot-actions{flex-wrap:wrap}#studio-goal-precision{flex-basis:100%}#studio-goal-precision label{display:inline-flex;margin:6px}
@media(max-width:900px){#robot-panel[data-studio-tab=robot] .robot-settings-body{display:flex;flex-direction:column}#mount-editor,#mount-form{width:100%}#robot-studio-tabs button{padding:8px 16px}}

#arena-viewport #arena-object-card{position:absolute;right:12px;top:12px;width:280px;max-width:85%;max-height:85%;overflow:auto;z-index:2;box-shadow:0 5px 20px #23445620;align-items:stretch;flex-direction:column}#arena-object-card>label{justify-content:space-between}#arena-object-card>small{font-size:12px;line-height:1.5}#robot-panel.arena-configuring>.robot-actions{display:flex}#robot-panel.arena-configuring>#robot-reading{display:block}#mount-palette button{display:inline-flex;align-items:center;gap:4px}#robot-panel #arena-drawing-tools{position:static}

#robot-studio-header{position:sticky;top:-18px;z-index:5;background:#f4f8fa;flex:none;padding:4px 0}#robot-panel #robot-studio-header>.robot-heading{position:static}#robot-panel #robot-studio-tabs{margin:0}#robot-panel .arena-tool-row span svg{display:inline-block;width:20px;height:20px;min-height:0;margin:0;vertical-align:middle}#robot-panel #arena-viewport{height:auto;aspect-ratio:1.5;min-height:300px;max-height:70vh}#robot-panel.arena-maximized #arena-viewport{height:70vh;aspect-ratio:auto}#robot-panel.needs-robot-setup #robot-studio-header{display:block}#robot-panel.needs-robot-setup #robot-studio-tabs{display:none}

#robot-panel[data-studio-tab=challenge] #course-editor>#studio-course-advanced{display:block;margin-top:12px}#studio-course-advanced form{margin:8px 0}#studio-course-advanced>p{display:none}

#robot-panel #mount-add{align-items:flex-end}#robot-panel #mount-add>label{display:flex;flex-direction:column;gap:4px;margin:0}#robot-panel #mount-add select,#robot-panel #mount-add>button{height:36px;margin:0;box-sizing:border-box}#robot-panel #mount-add>button{display:inline-flex;align-items:center;justify-content:center}

/* Align icon and label as a single centered toolbar row. */
#robot-panel .arena-tool-row{align-items:center;gap:6px}
#robot-panel .arena-tool-row button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:8px 10px;line-height:20px;vertical-align:middle}
#robot-panel .arena-tool-row button>span{display:inline-flex;align-items:center;justify-content:center;flex:0 0 20px;width:20px;height:20px;margin:0;line-height:1}
#robot-panel .arena-tool-row button>span svg{display:block;flex:none;width:20px;height:20px;min-height:0;margin:0;vertical-align:initial}