Class Reward Focus Timer
Build a focus timer for a classroom rewards scenario, including real content, actionable controls, clear state feedback, and responsive 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>Class Reward Focus Timer</title>
<style>
:root { --ink:#252525; --paper:#f7f2e8; --accent:#247ba0; --secondary:#f4b942; --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:"Kaiti SC",STKaiti,"Songti SC",serif; background:radial-gradient(circle at 12% 18%,color-mix(in srgb,var(--accent) 12%,transparent) 0 1px,transparent 2px),var(--paper);background-size:19px 19px; }
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(980px,calc(100% - 32px));margin:auto;padding:72px 0 92px}.mast{display:grid;grid-template-columns:1fr auto;transform:rotate(-.25deg);gap:32px;align-items:center;margin-bottom:46px}.mast h1{font-family:"Kaiti SC",STKaiti,serif;font-weight:700;font-size:clamp(40px,8vw,84px);letter-spacing:.02em;margin:0;line-height:1.12}.intro{max-width:650px;margin-top:18px;line-height:2}.scenario{padding:12px;border:2px solid var(--accent);color:var(--accent);transform:rotate(3deg)}.eyebrow{display:block;margin-bottom:9px;color:var(--accent);letter-spacing:.18em}.demo{border-radius:2px;transform:rotate(.12deg);box-shadow:0 30px 70px color-mix(in srgb,var(--ink) 18%,transparent);position:relative;min-height:430px;overflow:hidden;padding:clamp(28px,6vw,66px);background:color-mix(in srgb,var(--paper) 92%,#fff)}@media(max-width:700px){.page{width:calc(100% - 20px);padding:28px 0}.mast{grid-template-columns:1fr}.scenario{justify-self:start}.demo{padding:20px}}
.panel{padding:24px;border-block:1px solid var(--ink);background:transparent}.stack{display:grid;gap:22px}.row{display:flex;flex-wrap:wrap;gap:16px}.action{padding:8px 0;border:0;border-bottom:1px solid currentColor;background:transparent;letter-spacing:.08em}.action.primary,.action.is-active{color:var(--accent);border-bottom-width:4px}.status{min-height:28px;margin-top:20px;font-style:italic}.metric{font-family:Didot,serif;font-size:clamp(38px,8vw,76px)}.muted{max-width:54ch;line-height:1.8}.meter{position:relative;height:3px;background:var(--line)}.meter>i{position:absolute;inset:0 auto 0 0;background:var(--accent)}.chip{padding-bottom:3px;border-bottom:1px solid var(--ink);font-size:13px}
.composition-index{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px}.index-mark{display:grid;align-content:space-between;width:76px;padding:16px 10px;border:1px solid var(--line);color:var(--accent);background:color-mix(in srgb,var(--paper) 82%,transparent);text-align:center}.index-mark strong{font:900 34px/1 ui-monospace,monospace}.index-mark span{writing-mode:vertical-rl;font:800 10px/1.2 ui-monospace,monospace;letter-spacing:.18em}.composition-index .demo{grid-column:1;grid-row:1}.composition-index::before{content:"";position:absolute;left:-12px;top:38px;width:5px;height:45%;background:linear-gradient(var(--accent),var(--secondary))}@media(max-width:700px){.composition-index{grid-template-columns:1fr}.index-mark{grid-row:1;width:auto;grid-template-columns:auto 1fr}.index-mark span{writing-mode:horizontal-tb}.composition-index .demo{grid-row:2}}
.mini{max-width:600px;margin:auto;padding:clamp(28px,7vw,70px);border:1px solid var(--line);border-radius:50% 50% 24px 24px;text-align:center;background:var(--paper)}.timer output{display:block;margin:20px 0;font:900 clamp(54px,13vw,100px)/1 ui-monospace,monospace}.timer .row{justify-content:center;margin-top:24px}.workflow-guide{display:grid;grid-template-columns:190px minmax(0,1fr);grid-template-areas:"rail core" "rail evidence";gap:14px 18px}.guide-rail{grid-area:rail;display:grid;align-content:start;gap:15px;padding:18px;border-right:1px solid var(--line)}.guide-rail ol{display:grid;gap:8px;padding:0;margin:0;list-style:none}.guide-rail li{display:grid;grid-template-columns:30px 1fr;gap:8px;align-items:center;padding:9px;opacity:.5}.guide-rail li[aria-current="step"]{opacity:1;color:var(--paper);background:var(--ink)}.guide-rail li.is-complete{opacity:1;color:var(--accent)}.guide-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px}.guide-actions .action{padding-inline:8px}#workflowGuideProgress{height:6px;background:var(--line)}#workflowGuideProgress i{display:block;width:0;height:100%;background:var(--accent)}.guide-core{grid-area:core;min-width:0;padding:16px;border:1px solid var(--line)}.guide-core>p{margin:0 0 14px;padding:10px;border-left:4px solid var(--accent);background:color-mix(in srgb,var(--secondary) 12%,transparent)}.guide-core[data-guide-step="1"]{border-radius:28px}.guide-core[data-guide-step="2"]{box-shadow:inset 0 0 0 4px color-mix(in srgb,var(--accent) 35%,transparent)}.guide-evidence{grid-area:evidence;display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:start}.guide-evidence details,.guide-evidence form{padding:12px;border:1px solid var(--line)}.guide-evidence label{display:grid;gap:7px}.guide-evidence textarea{width:100%;padding:9px;border:1px solid var(--line);background:var(--paper)}@media(max-width:900px){.workflow-guide{grid-template-columns:1fr;grid-template-areas:"core" "rail" "evidence"}.guide-rail{border-right:0;border-bottom:1px solid var(--line)}.guide-rail ol{grid-template-columns:repeat(3,1fr)}.guide-evidence{grid-template-columns:1fr}}
</style>
</head>
<body data-aesthetic="paper" data-composition="field-index">
<main class="page">
<header class="mast"><div><span class="eyebrow">paper / Focus Timer / BEGINNER</span><h1>Class Reward Focus Timer</h1><p class="intro">Build a focus timer for a classroom rewards scenario, including real content, actionable controls, clear state feedback, and responsive layouts across sizes.</p></div><span class="scenario">Class Rewards</span></header>
<div class="composition-index"><section class="demo" aria-label="Class rewards focus timer interaction area"><div class="workflow-guide"><nav class="guide-rail" aria-label="Class reward guidance"><span class="eyebrow">Classroom Reward GUIDE</span><ol><li data-workflow-guide-step="0" aria-current="step"><b>1</b><span>Class reward start round</span></li><li data-workflow-guide-step="1"><b>2</b><span>Midway Adjustment for Classroom Rewards</span></li><li data-workflow-guide-step="2"><b>3</b><span>Class reward completion review</span></li></ol><div class="guide-actions"><button id="workflowGuideBack" class="action" type="button" disabled>Previous</button><button id="workflowGuideNext" class="action primary" type="button">Complete this step</button></div><div id="workflowGuideProgress" role="progressbar" aria-label="Class Reward Progress" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div></nav><section id="workflowCore" class="workflow-core guide-core" data-guide-step="0" aria-describedby="workflowGuideInstruction"><p id="workflowGuideInstruction">Please complete the related actions for “Class Rewards Start Round” in the main example.</p><!-- 11DZ_CORE_START:mini-apps-games-focus-timer --><div class="mini timer"><span class="eyebrow">FOCUS TIMER</span><output id="timerValue">05:00</output><div id="timerProgress" class="meter" role="progressbar" aria-label="Remaining Time Ratio" aria-valuemin="0" aria-valuemax="100" aria-valuenow="100"><i id="timerMeter"></i></div><div class="row"><button id="timerToggle" class="action primary" type="button" data-core-bridge="mini-apps-games-focus-timer">Start</button><button id="timerReset" class="action" type="button">Reset</button></div></div><!-- 11DZ_CORE_END --></section><aside class="guide-evidence"><details id="workflowGuideDetails"><summary>View acceptance requirements</summary><ul><li>Class reward start round requires one visible state change</li><li>Midway adjustments to class rewards require a visible state change</li><li>A visible state change is needed to complete the classroom reward recap</li></ul></details><form id="workflowGuideEvidenceForm"><label>This step evidence<textarea id="workflowGuideEvidence" rows="3" placeholder="Record the observed state"></textarea></label><input class="action" type="submit" value="Save evidence"></form><output id="workflowGuideSummary">0 / 3 Steps Complete</output></aside></div><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>Class Rewards FIELD INDEX</span></aside></div>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:mini-apps-games-focus-timer */
const initialSeconds=300;let remaining=initialSeconds;let timer=null;const value=document.querySelector('#timerValue');const toggle=document.querySelector('#timerToggle');function render(){const percent=Math.round(remaining/initialSeconds*100);value.textContent=String(Math.floor(remaining/60)).padStart(2,'0')+':'+String(remaining%60).padStart(2,'0');document.querySelector('#timerMeter').style.width=percent+'%';document.querySelector('#timerProgress').setAttribute('aria-valuenow',String(percent));}toggle.addEventListener('click',()=>{if(timer){clearInterval(timer);timer=null;toggle.textContent='Continue';announce('Timer paused');return;}toggle.textContent='Pause';timer=setInterval(()=>{remaining=Math.max(0,remaining-1);render();if(!remaining){clearInterval(timer);timer=null;toggle.textContent='Completed';announce('Focus Time Complete');}},1000);announce('Timer started');});document.querySelector('#timerReset').addEventListener('click',()=>{clearInterval(timer);timer=null;remaining=initialSeconds;toggle.textContent='Start';render();announce('Timer reset');});render();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"mini-apps-games-focus-timer","selector":"[data-core-bridge=\"mini-apps-games-focus-timer\"]","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 workflowGuideCore=document.querySelector('#workflowCore');const workflowGuideStages=["Class reward start round","Midway Adjustment for Classroom Rewards","Class reward completion review"];const workflowGuideState={step:0,completed:new Set(),evidence:new Map(),consumedVersion:0};function workflowGuideDrive(){const step=workflowGuideState.step;workflowGuideCore.dataset.guideStep=String(step);document.querySelector('#workflowGuideInstruction').textContent='Please complete the main example ‘'+workflowGuideStages[step]+'Related actions.”';document.querySelectorAll('[data-workflow-guide-step]').forEach((item,index)=>{item.classList.toggle('is-complete',workflowGuideState.completed.has(index));if(index===step)item.setAttribute('aria-current','step');else item.removeAttribute('aria-current');});document.querySelector('#workflowGuideBack').disabled=step===0;document.querySelector('#workflowGuideNext').textContent=step===workflowGuideStages.length-1?'Record Result':'Complete this step';const percent=Math.round(workflowGuideState.completed.size/workflowGuideStages.length*100);const progress=document.querySelector('#workflowGuideProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';document.querySelector('#workflowGuideSummary').textContent=workflowGuideState.completed.size+' / '+workflowGuideStages.length+' Step complete · '+workflowBridgeSummary();announce('Current class reward step:'+workflowGuideStages[step]);}function workflowGuideAdvance(direction){if(direction>0){const bridge=workflowBridgeActivate();const version=Number(workflowGuideCore.dataset.workflowVersion||0);if(version<=workflowGuideState.consumedVersion){announce('Please complete the visible state change in the main example first');return;}workflowGuideState.consumedVersion=version;workflowGuideState.completed.add(workflowGuideState.step);announce('Main case changes recorded · '+bridge.summary);}workflowGuideState.step=Math.max(0,Math.min(workflowGuideStages.length-1,workflowGuideState.step+direction));workflowGuideDrive();}document.querySelector('#workflowGuideBack').addEventListener('click',()=>workflowGuideAdvance(-1));document.querySelector('#workflowGuideNext').addEventListener('click',()=>workflowGuideAdvance(1));document.querySelector('#workflowGuideEvidenceForm').addEventListener('submit',event=>{event.preventDefault();const version=Number(workflowGuideCore.dataset.workflowVersion||0);if(version<=workflowGuideState.consumedVersion){announce('Evidence not saved: the main example has no new changes yet');return;}const text=document.querySelector('#workflowGuideEvidence').value.trim();workflowGuideState.evidence.set(workflowGuideState.step,text||'Visible status check completed');workflowGuideState.completed.add(workflowGuideState.step);workflowGuideState.consumedVersion=version;workflowGuideDrive();announce('Evidence for this step has been saved · '+workflowBridgeSummary());});document.querySelector('#workflowGuideDetails').addEventListener('toggle',event=>announce(event.currentTarget.open?'Acceptance requirements expanded':'Acceptance requirements collapsed'));workflowGuideDrive();
workflowBridgeReset();
</script>
</body>
</html>