Project Space Section Spy Navigation
Complete chapter-location navigation in a project space scenario: include real content, interactive controls, clear status feedback, and layouts across sizes.
With JavaScript enabled, you can edit, run, and save this example. The fixed source is as follows:
<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Project Space Section Spy Navigation</title>
<style>
:root { --ink:#ecf7f3; --paper:#071310; --accent:#af4f45; --secondary:#9eb49f; --line:color-mix(in srgb, var(--ink) 18%, transparent); --shadow:0 24px 60px color-mix(in srgb, var(--ink) 16%, transparent); color-scheme:light; }
* { box-sizing:border-box; }
html { min-width:320px; background:var(--paper); }
body { min-height:100vh; margin:0; overflow-x:hidden; color:var(--ink); font-family:"Trebuchet MS","PingFang SC",sans-serif; background:radial-gradient(circle at 20% 10%,color-mix(in srgb,var(--accent) 22%,transparent),transparent 35%),radial-gradient(circle at 85% 90%,color-mix(in srgb,var(--secondary) 20%,transparent),transparent 38%),var(--paper); }
button,input,select,textarea { color:inherit; font:inherit; }
button,[role="button"],input,select,textarea { accent-color:var(--accent); }
button { cursor:pointer; }
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
[hidden] { display:none !important; }
@media (max-width:700px) { .mast h1 { line-height:1.08 !important; letter-spacing:-.035em !important; overflow-wrap:anywhere; } }
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; } }
.page{width:min(1160px,calc(100% - 30px));margin:auto;padding:60px 0}.mast{display:flex;justify-content:space-between;border-left:4px solid var(--accent);padding-left:22px;gap:28px;align-items:center;margin-bottom:34px}.mast h1{font-family:"Trebuchet MS","PingFang SC",sans-serif;font-weight:900;font-size:clamp(42px,9vw,94px);text-shadow:0 0 28px color-mix(in srgb,var(--accent) 55%,transparent);margin:0;line-height:.92}.eyebrow{display:block;margin-bottom:14px;color:var(--accent);font:900 11px/1 ui-monospace,monospace;letter-spacing:.2em}.intro{max-width:680px;color:color-mix(in srgb,var(--ink) 68%,transparent);line-height:1.7}.scenario{padding:10px 16px;border:1px solid var(--secondary);border-radius:4px;box-shadow:0 0 20px color-mix(in srgb,var(--secondary) 30%,transparent)}.demo{border-color:color-mix(in srgb,var(--accent) 55%,transparent);border-radius:24px;box-shadow:inset 0 0 40px color-mix(in srgb,var(--accent) 8%,transparent),0 0 60px color-mix(in srgb,var(--secondary) 12%,transparent);position:relative;min-height:410px;overflow:hidden;padding:clamp(24px,4vw,50px);background:color-mix(in srgb,var(--paper) 86%,transparent)}@media(max-width:700px){.mast{display:grid}.page{padding:22px 0}.demo{padding:16px}}
.panel{padding:20px;border:1px solid color-mix(in srgb,var(--accent) 50%,transparent);border-radius:18px;background:color-mix(in srgb,var(--paper) 88%,transparent);box-shadow:inset 0 0 24px color-mix(in srgb,var(--accent) 7%,transparent)}.stack{display:grid;gap:16px}.row{display:flex;flex-wrap:wrap;gap:9px}.action{padding:11px 16px;border:1px solid var(--accent);border-radius:6px;color:var(--accent);background:transparent;box-shadow:0 0 14px color-mix(in srgb,var(--accent) 10%,transparent)}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.status{min-height:24px;color:var(--secondary);text-shadow:0 0 10px currentColor}.metric{font-size:clamp(30px,7vw,64px);font-weight:900;text-shadow:0 0 18px color-mix(in srgb,var(--accent) 40%,transparent)}.muted{opacity:.7}.chip{padding:6px 9px;border:1px solid var(--secondary);border-radius:4px}.meter{height:7px;background:color-mix(in srgb,var(--accent) 15%,transparent)}.meter>i{display:block;height:100%;box-shadow:0 0 12px var(--accent);background:var(--accent)}
.composition-gallery{margin:0;padding:clamp(8px,2vw,18px);border:1px solid var(--ink);background:color-mix(in srgb,var(--paper) 78%,transparent)}.gallery-caption{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:15px 4px 2px;font-size:12px}.gallery-caption::before,.gallery-caption::after{content:"";height:1px;background:var(--line)}.gallery-caption strong{font:800 11px/1.2 ui-monospace,monospace;letter-spacing:.16em;text-transform:uppercase}.composition-gallery .demo{box-shadow:none}.composition-gallery .demo::before{content:"";position:absolute;inset:10px;border:1px dashed color-mix(in srgb,var(--accent) 36%,transparent);pointer-events:none}
.section-spy{display:grid;grid-template-columns:210px minmax(0,1fr);gap:18px}.section-spy nav{display:grid;align-content:start;gap:6px;padding:14px;border-left:3px solid var(--line)}.section-spy nav a{padding:11px;color:inherit;text-decoration:none}.section-spy nav a[aria-current="location"]{border-radius:9px;color:var(--paper);background:var(--accent)}#spyScroller{height:390px;overflow:auto;scroll-behavior:smooth;scroll-snap-type:y proximity;border:1px solid var(--line);border-radius:18px}#spyScroller section{display:grid;min-height:360px;align-content:center;padding:clamp(24px,6vw,64px);scroll-snap-align:start;border-bottom:1px solid var(--line)}@media(max-width:650px){.section-spy{grid-template-columns:1fr}.section-spy nav{grid-auto-flow:column;overflow:auto;border-left:0;border-bottom:3px solid var(--line)}.section-spy nav a{white-space:nowrap}}.workflow-compare{display:grid;grid-template-columns:minmax(230px,.55fr) minmax(0,1.45fr);gap:18px}.compare-stage{display:grid;gap:12px;min-width:0}.compare-stage>header{display:flex;justify-content:space-between;gap:16px;align-items:end}.compare-stage h2{margin:.2em 0}.compare-core{--compare-split:50%;min-width:0;padding:14px;clip-path:inset(0 calc(100% - var(--compare-split)) 0 0);outline:1px dashed var(--accent);outline-offset:-8px;transition:clip-path .25s,filter .25s}.compare-core[data-compare-channel="B"]{filter:hue-rotate(32deg) saturate(1.15)}.compare-controls{display:grid;align-content:start;gap:16px;padding:20px;border:1px solid var(--line);border-radius:24px 4px 24px 4px;background:var(--paper)}.compare-controls fieldset,.compare-controls>label{display:grid;gap:8px}.compare-controls input[type="range"]{width:100%}#workflowCompareShelf{display:grid;gap:6px;padding:0;margin:0;list-style:none}#workflowCompareShelf li{display:grid;grid-template-columns:auto 1fr auto;gap:8px;padding:9px;border-top:1px solid var(--line);font-size:12px}@media(max-width:900px){.workflow-compare{grid-template-columns:1fr}.compare-stage{order:-1}.compare-core{clip-path:none;border-left:8px solid var(--accent)}}
</style>
</head>
<body data-aesthetic="dark-neon" data-composition="gallery-frame">
<main class="page">
<header class="mast"><div><span class="eyebrow">dark-neon / section navigation / BEGINNER</span><h1>Project Space Section Spy Navigation</h1><p class="intro">Complete chapter-location navigation in a project space scenario: include real content, interactive controls, clear status feedback, and layouts across sizes.</p></div><span class="scenario">Project Space</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="Project space section-spy navigation interaction area"><div class="workflow-compare"><form id="workflowCompareControls" class="compare-controls"><fieldset><legend>Reference Channel</legend><label><input type="radio" name="workflowChannel" value="A" checked>A · To-Do Space</label><label><input type="radio" name="workflowChannel" value="B">B · File Space</label></fieldset><label>Member scope weight<input id="workflowCompareWeight" type="range" min="10" max="90" value="50"><output id="workflowCompareWeightValue">50 Person</output></label><label><input id="workflowCompareFreeze" type="checkbox">Freeze current version</label><button id="workflowCompareCapture" class="action primary" type="button">Sample and switch spaces</button><ol id="workflowCompareShelf" aria-label="Version Sampling Record"></ol></form><section class="compare-stage"><header><span class="eyebrow">Project Space COMPARE</span><h2>Project View Dual-Version Comparison</h2><output id="workflowCompareLive">Version A waiting for sampling</output></header><section id="workflowCore" class="workflow-core compare-core" data-compare-channel="A" style="--compare-split:50%"><!-- 11DZ_CORE_START:navigation-menus-section-spy --><div class="section-spy"><nav aria-label="Article sections"><a href="#spySection0" aria-current="location">01 Project Space Collaboration</a><a href="#spySection1" data-core-bridge="navigation-menus-section-spy">02 project space progress</a><a href="#spySection2">03 project space reminder</a><a href="#spySection3">04 Project Space Favorites</a></nav><article id="spyScroller" tabindex="0" aria-label="Scrollable Sections"><section id="spySection0" tabindex="-1"><span class="eyebrow">SECTION 1</span><h2>Project Space Collaboration</h2><p>This is the full content area used to demonstrate section anchoring. Clicking the left-side table of contents will smoothly jump to the section and sync the current position.</p><p>Keyboard users can also focus the scroll area to continue reading.</p></section><section id="spySection1" tabindex="-1"><span class="eyebrow">SECTION 2</span><h2>Project space progress</h2><p>This is the full content area used to demonstrate section anchoring. Clicking the left-side table of contents will smoothly jump to the section and sync the current position.</p><p>Keyboard users can also focus the scroll area to continue reading.</p></section><section id="spySection2" tabindex="-1"><span class="eyebrow">SECTION 3</span><h2>Project space reminders</h2><p>This is the full content area used to demonstrate section anchoring. Clicking the left-side table of contents will smoothly jump to the section and sync the current position.</p><p>Keyboard users can also focus the scroll area to continue reading.</p></section><section id="spySection3" tabindex="-1"><span class="eyebrow">SECTION 4</span><h2>Project Space Favorites</h2><p>This is the full content area used to demonstrate section anchoring. Clicking the left-side table of contents will smoothly jump to the section and sync the current position.</p><p>Keyboard users can also focus the scroll area to continue reading.</p></section></article></div><!-- 11DZ_CORE_END --></section></section></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>Project Space / GALLERY 03</strong></figcaption></figure>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:navigation-menus-section-spy */
const spyLinks=[...document.querySelectorAll('.section-spy nav a')];spyLinks.forEach(link=>link.addEventListener('click',event=>{event.preventDefault();spyLinks.forEach(item=>item.removeAttribute('aria-current'));link.setAttribute('aria-current','location');const section=document.querySelector(link.getAttribute('href'));section.scrollIntoView({behavior:matchMedia('(prefers-reduced-motion:reduce)').matches?'auto':'smooth',block:'start'});section.focus({preventScroll:true});announce('Located '+link.textContent.trim());}));
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"navigation-menus-section-spy","selector":"[data-core-bridge=\"navigation-menus-section-spy\"]","mode":"click","key":"Enter"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("click",workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();workflowBridgeControl.click();const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowCompareCore=document.querySelector('#workflowCore');const workflowCompareWeight=document.querySelector('#workflowCompareWeight');const workflowCompareState={channel:'A',weight:50,frozen:false,snapshots:[]};function workflowCompareFingerprint(){const controls=[...workflowCompareCore.querySelectorAll('input,select,textarea')];const outputs=[...workflowCompareCore.querySelectorAll('output,[role="status"],strong')].map(node=>node.textContent.trim()).filter(Boolean);return {controlValues:controls.map(control=>control.type==='checkbox'||control.type==='radio'?control.checked:control.value),summary:outputs.slice(0,4).join(' / '),nodes:workflowCompareCore.querySelectorAll('*').length};}function workflowCompareDrive(){workflowCompareCore.dataset.compareChannel=workflowCompareState.channel;workflowCompareCore.style.setProperty('--compare-split',workflowCompareState.weight+'%');document.querySelector('#workflowCompareWeightValue').textContent=workflowCompareState.weight+' person';document.querySelector('#workflowCompareLive').textContent=workflowCompareState.channel+' Version · '+workflowCompareState.weight+' person'+(workflowCompareState.frozen?' · Frozen':'');announce('Project view is being viewed '+workflowCompareState.channel+' Version');}function workflowCompareCapture(source){const bridge=workflowBridgeActivate();const snapshot={...workflowCompareFingerprint(),channel:workflowCompareState.channel,weight:workflowCompareState.weight,source,bridge:bridge.summary};workflowCompareState.snapshots.push(snapshot);const item=document.createElement('li');item.innerHTML='<b>'+snapshot.channel+'</b><span>'+(snapshot.summary||snapshot.bridge)+'</span><small>'+snapshot.weight+' person · '+snapshot.bridge+'</small>';document.querySelector('#workflowCompareShelf').prepend(item);announce('sampled '+snapshot.channel+' Version and switch spaces · '+bridge.summary);}document.querySelectorAll('[name="workflowChannel"]').forEach(input=>input.addEventListener('change',()=>{workflowCompareState.channel=input.value;workflowCompareDrive();}));workflowCompareWeight.addEventListener('input',()=>{workflowCompareState.weight=Number(workflowCompareWeight.value);workflowCompareDrive();});document.querySelector('#workflowCompareFreeze').addEventListener('change',event=>{workflowCompareState.frozen=event.currentTarget.checked;workflowCompareDrive();});document.querySelector('#workflowCompareCapture').addEventListener('click',()=>workflowCompareCapture('Button Sampling'));workflowCompareCore.addEventListener('dblclick',()=>workflowCompareCapture('Main view double-click'));workflowCompareDrive();
workflowBridgeReset();
</script>
</body>
</html>