Local Event Timeline
Complete an activity timeline in a local events scenario: includes real content, interactive controls, clear status feedback, and responsive layouts.
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>Local Event Timeline</title>
<style>
:root { --ink:#102c44; --paper:#eef6f8; --accent:#e05263; --secondary:#79b7c7; --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:Optima,"Songti SC",serif; background:radial-gradient(ellipse at top left,color-mix(in srgb,var(--secondary) 32%,transparent),transparent 42%),radial-gradient(ellipse at bottom right,color-mix(in srgb,var(--accent) 18%,transparent),transparent 45%),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(1100px,calc(100% - 34px));margin:auto;padding:68px 0}.mast{display:grid;grid-template-columns:1fr auto;align-items:center;gap:40px;margin:0 4vw 36px}.mast h1{font-family:Optima,"Songti SC",serif;font-weight:700;font-size:clamp(40px,8vw,86px);letter-spacing:-.025em;margin:0;line-height:1.02}.eyebrow{display:block;margin-bottom:12px;color:var(--accent);font-size:12px;letter-spacing:.2em}.intro{max-width:60ch;line-height:1.9}.scenario{display:grid;width:108px;height:108px;place-items:center;padding:12px;border:1px solid var(--line);border-radius:50%;text-align:center}.demo{border-radius:72px 18px 72px 18px;box-shadow:0 28px 80px color-mix(in srgb,var(--ink) 14%,transparent);position:relative;min-height:430px;overflow:hidden;padding:clamp(28px,5vw,58px);background:color-mix(in srgb,var(--paper) 84%,transparent)}@media(max-width:700px){.page{width:calc(100% - 18px);padding:24px 0}.mast{grid-template-columns:1fr;margin-inline:12px}.scenario{width:auto;height:auto;border-radius:999px}.demo{padding:18px}}
.panel{padding:18px;border:2px solid var(--line);border-radius:26px;box-shadow:0 12px 0 color-mix(in srgb,var(--secondary) 35%,transparent)}.row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.stack{display:grid;gap:12px}.action{padding:12px 20px;border:2px solid var(--ink);border-radius:14px;background:var(--paper);box-shadow:0 5px 0 var(--ink);font-weight:800}.action:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.status{text-align:center;min-height:26px;margin-top:18px}.metric{text-align:center;font-size:clamp(34px,8vw,70px);font-weight:900}.muted{text-align:center;opacity:.7}.meter{height:14px;padding:2px;border:2px solid var(--ink);border-radius:999px}.meter>i{display:block;height:100%;border-radius:inherit;background:var(--secondary)}.chip{padding:7px 11px;border-radius:12px;background:color-mix(in srgb,var(--accent) 12%,transparent)}
.composition-deck{display:grid;grid-template-rows:auto 1fr;border:1px solid var(--line);border-radius:24px;overflow:hidden;background:color-mix(in srgb,var(--ink) 4%,var(--paper))}.deck-bar{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:12px 18px;color:var(--paper);background:var(--ink);font:700 12px/1 ui-monospace,monospace}.deck-lights{display:flex;gap:7px}.deck-lights i{width:10px;height:10px;border-radius:50%;background:var(--accent)}.deck-lights i:nth-child(2){background:var(--secondary)}.deck-lights i:nth-child(3){background:color-mix(in srgb,var(--paper) 55%,transparent)}.composition-deck .demo{border:0;border-radius:0;box-shadow:none}
.timeline-demo{display:grid;gap:18px;max-width:820px;margin:auto}.timeline-demo header{display:flex;justify-content:space-between;gap:18px;align-items:end}.timeline-demo h2{margin:.3em 0}.activity-timeline{position:relative;display:grid;gap:0;padding:0;margin:0;list-style:none}.activity-timeline::before{content:"";position:absolute;left:82px;top:10px;bottom:10px;width:2px;background:var(--line)}.activity-timeline li{position:relative;display:grid;grid-template-columns:64px 1fr;gap:38px;padding:18px 0}.activity-timeline li::before{content:"";position:absolute;left:76px;top:26px;width:14px;height:14px;border:3px solid var(--paper);border-radius:50%;background:var(--accent)}.activity-timeline time{font:800 12px/1 ui-monospace,monospace}.activity-timeline h3{margin:.5em 0}@media(max-width:540px){.timeline-demo header{align-items:stretch;flex-direction:column}.activity-timeline::before{left:9px}.activity-timeline li{grid-template-columns:1fr;gap:8px;padding-left:34px}.activity-timeline li::before{left:3px}}.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="organic" data-composition="control-deck">
<main class="page">
<header class="mast"><div><span class="eyebrow">organic / Activity Timeline / INTERMEDIATE</span><h1>Local Event Timeline</h1><p class="intro">Complete an activity timeline in a local events scenario: includes real content, interactive controls, clear status feedback, and responsive layouts.</p></div><span class="scenario">Local Events</span></header>
<div class="composition-deck"><div class="deck-bar"><span>CONTROL DECK · 04</span><span>Activity timeline</span><span class="deck-lights" aria-hidden="true"><i></i><i></i><i></i></span></div><section class="demo" aria-label="Local Events Timeline interactive 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 · Parent-Child Activities</label><label><input type="radio" name="workflowChannel" value="B">B · Outdoor Activities</label></fieldset><label>Travel Distance Weight<input id="workflowCompareWeight" type="range" min="10" max="90" value="50"><output id="workflowCompareWeightValue">50 km</output></label><label><input id="workflowCompareFreeze" type="checkbox">Freeze current version</label><button id="workflowCompareCapture" class="action primary" type="button">Sample and Collect Events</button><ol id="workflowCompareShelf" aria-label="Version Sampling Record"></ol></form><section class="compare-stage"><header><span class="eyebrow">Local Events COMPARE</span><h2>Dual-Version Activity 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:cards-lists-content-activity-timeline --><div class="timeline-demo"><header><span class="eyebrow">ACTIVITY TIMELINE</span><h2>Local events activity feed</h2><label>Completed items only <input id="timelineComplete" type="checkbox" data-core-bridge="cards-lists-content-activity-timeline"></label></header><ol id="activityTimeline" class="activity-timeline"><li data-complete="true"><time datetime="2026-07-01">07.01</time><div><span class="chip">Completed</span><h3>Local event inspiration</h3><p>Record a traceable status change and responsibility note.</p></div></li><li data-complete="false"><time datetime="2026-07-02">07.02</time><div><span class="chip">In Progress</span><h3>Local Event Record</h3><p>Record a traceable status change and responsibility note.</p></div></li><li data-complete="true"><time datetime="2026-07-03">07.03</time><div><span class="chip">Completed</span><h3>Local event collaboration</h3><p>Record a traceable status change and responsibility note.</p></div></li><li data-complete="false"><time datetime="2026-07-04">07.04</time><div><span class="chip">In Progress</span><h3>Local Activity Progress</h3><p>Record a traceable status change and responsibility note.</p></div></li><li data-complete="true"><time datetime="2026-07-05">07.05</time><div><span class="chip">Completed</span><h3>Local Event Reminders</h3><p>Record a traceable status change and responsibility note.</p></div></li><li data-complete="false"><time datetime="2026-07-06">07.06</time><div><span class="chip">In Progress</span><h3>Local events collection</h3><p>Record a traceable status change and responsibility note.</p></div></li></ol></div><!-- 11DZ_CORE_END --></section></section></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:cards-lists-content-activity-timeline */
const timelineItems=[...document.querySelectorAll('#activityTimeline li')];document.querySelector('#timelineComplete').addEventListener('change',event=>{timelineItems.forEach(item=>{item.hidden=event.currentTarget.checked&&item.dataset.complete!=='true';});const visible=timelineItems.filter(item=>!item.hidden).length;announce('Timeline Display '+visible+' items of activity');});
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"cards-lists-content-activity-timeline","selector":"[data-core-bridge=\"cards-lists-content-activity-timeline\"]","mode":"toggle","key":" "};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.setAttribute('aria-keyshortcuts',workflowBridgeSpec.key===' '?'Space':workflowBridgeSpec.key);const workflowBridgeToggleKeyMatches=event=>event.key===workflowBridgeSpec.key||event.key==='Spacebar'||event.code==='Space';workflowBridgeControl.addEventListener('keydown',event=>{if(!workflowBridgeToggleKeyMatches(event))return;event.preventDefault();});workflowBridgeControl.addEventListener('keyup',event=>{if(!workflowBridgeToggleKeyMatches(event))return;event.preventDefault();workflowBridgeControl.click();});workflowBridgeControl.addEventListener("change",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+' kilometers';document.querySelector('#workflowCompareLive').textContent=workflowCompareState.channel+' Version · '+workflowCompareState.weight+' kilometers'+(workflowCompareState.frozen?' · Frozen':'');announce('Viewing activity comparison '+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+' km · '+snapshot.bridge+'</small>';document.querySelector('#workflowCompareShelf').prepend(item);announce('sampled '+snapshot.channel+' Version and bookmark activities · '+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>