Manual scoreboard

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<html lang="en-US"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Manual scoreboard</title><style>*{box-sizing:border-box}body{margin:0;background:#f3f4f2;color:#202c32;font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{max-width:1120px;margin:auto;padding:30px 28px 60px}header{margin-bottom:22px}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:750;color:#59676b}h1{font-size:clamp(25px,4vw,36px);line-height:1.15;letter-spacing:-.035em;margin:7px 0 10px}h2{font-size:21px;line-height:1.3;margin:0 0 16px}h3{font-size:17px;margin:0 0 10px}p{margin:8px 0 16px}label{display:block;font-size:14px;font-weight:650;margin:12px 0 5px}input,select,textarea,button{font:inherit}input,select,textarea{width:100%;min-width:0;border:1px solid #b6c0bf;border-radius:7px;background:#fff;color:#202c32;padding:10px 12px}textarea{resize:vertical;min-height:88px}input[type=checkbox]{width:18px;height:18px;vertical-align:middle;margin-right:8px}button{border:1px solid #b8c3c1;border-radius:7px;padding:10px 15px;background:#fff;color:#203632;font-weight:650;cursor:pointer}button.primary{background:#243f3c;color:white;border-color:#243f3c}button:hover{filter:brightness(.95)}button:disabled{opacity:.48;cursor:not-allowed}:focus-visible{outline:3px solid #b05814;outline-offset:3px}.buttons{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.panel{background:#fff;border:1px solid #d7ddda;border-radius:12px;padding:24px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:22px}.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.result{background:#e4eee8;border:1px solid #c5d6ca;border-radius:12px;padding:28px}.big{font-size:clamp(32px,5vw,56px);font-weight:740;line-height:1.14;letter-spacing:-.04em;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.muted{color:#59686a;font-size:14px}.tag{display:inline-block;background:#edf0ed;border-radius:4px;padding:3px 8px;font-size:12px;font-weight:700}.error{color:#9d301b;font-weight:650;min-height:24px;margin-top:10px}.note{border-left:3px solid #9a794a;padding:10px 15px;background:#faf5e9;margin:18px 0}.below{margin-top:28px}.record{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.65 ui-monospace,SFMono-Regular,Consolas,monospace;background:#f2f4f1;padding:18px;border-radius:8px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;vertical-align:top;border-bottom:1px solid #dce1dd;padding:12px 10px;overflow-wrap:anywhere}th{color:#59686a;font-size:12px}a{color:#2c5a6a;overflow-wrap:anywhere}details{margin-top:20px}summary{cursor:pointer;font-weight:650}hr{border:0;border-top:1px solid #d6dcd6;margin:22px 0}[hidden]{display:none!important}ol,ul{padding-left:23px}.statline{display:flex;gap:20px;flex-wrap:wrap;margin:18px 0}.statline strong{display:block;font-size:24px}.inline{display:flex;align-items:center;gap:8px}.inline label{margin:0} .blank{min-height:36px;border-bottom:1px dashed #aebbb5;color:#66736d;font-size:13px;padding:8px 0}@media(max-width:720px){main{padding:22px 18px 45px}.split{grid-template-columns:1fr}.panel,.result{padding:20px}.row{gap:12px}th,td{padding:10px 6px}}@media(max-width:400px){main{padding:18px 14px 40px}.big{font-size:34px}button{padding:10px 12px}.row{grid-template-columns:1fr}.panel,.result{padding:17px}}.scores{display:grid;grid-template-columns:1fr 1fr;gap:20px}.team{padding:26px;border-radius:12px;border:1px solid #c8d0cd}.amber{background:#f5ead3}.blue{background:#e1edf5}.score{font-size:110px;font-weight:750;font-variant-numeric:tabular-nums;line-height:1.3;text-align:center}.team .buttons{justify-content:center}.event{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:15px 0;border-bottom:1px solid #dbe1db}@media(max-width:580px){.scores{gap:10px}.team{padding:14px}.score{font-size:76px}.team input{font-size:14px;padding:8px}.team .buttons{display:grid;gap:6px}.team button{font-size:13px;padding:10px 8px}.event{align-items:flex-start;flex-direction:column}}</style></head><body><main><header><div class="eyebrow">Two teams · Local unsaved session</div><h1>Manual scoreboard</h1></header>
<p>Record manual awards and inspect each correction before confirming.</p><section class="scores"><div class="team amber"><label for="nameA">Team A display name</label><input id="nameA" value="Team Amber" maxlength="45"><div class="score" id="scoreA">0</div><div class="buttons"><button id="a1">Team Amber +1</button><button id="a2">Team Amber +2</button></div></div><div class="team blue"><label for="nameB">Team B display name</label><input id="nameB" value="Team Blue" maxlength="45"><div class="score" id="scoreB">0</div><div class="buttons"><button id="b1">Team Blue +1</button><button id="b2">Team Blue +2</button></div></div></section>
<p id="announcement" role="status">New session 1 · 0 : 0 · No awards yet.</p><div class="buttons"><button id="undo" disabled>No active award to undo</button><button id="reset">Start a new session…</button></div>
<section id="preview" class="note" hidden aria-labelledby="previewTitle"><h2 id="previewTitle">Confirm action</h2><p id="previewText"></p><div class="buttons"><button id="confirm" class="primary">Confirm</button><button id="cancel">Cancel</button></div></section>
<section class="panel below"><h2>Current-session awards</h2><div id="history"><p>No awards yet.</p></div></section><details><summary>Worked correction and session behavior</summary><p>E1 Amber +2, E2 Blue +1, E3 Amber +1 gives 3:1. Undoing E3 gives 2:1; E3 stays visible as undone. A new E4 Blue +2 gives 2:3. The next generic undo targets E4.</p><p>A confirmed reset clears current history. Reloading starts at 0:0; score state is never saved. Awards are human inputs and establish no official match outcome or grading result.</p><a href="https://streamrsc.com/fly-scoreboard">Operator and score display reference</a></details><footer class="below muted">Local working example · Changes last only while this page is open.</footer></main><script>
const $=id=>document.getElementById(id);const txt=(id,v)=>$(id).textContent=v;const esc=s=>String(s).replace(/[&<>"']/g,c=>({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));const on=(id,event,fn)=>$(id).addEventListener(event,fn);const num=(s,positive=false)=>{s=String(s).trim();if(!/^\d+(?:\.\d{1,6})?$/.test(s)||!Number.isFinite(+s)||+s>1000000||(positive&&+s<=0))throw Error(positive?'Enter a density greater than 0, up to 1,000,000, with at most six decimals.':'Enter a value from 0 to 1,000,000, with at most six decimals.');return +s};const fmt=n=>n!==0&&Math.abs(n)<.000001?n.toExponential(6):Number(n.toFixed(6)).toString();

let events=[],sequence=0,session=1,pending=null;const names={A:'Team Amber',B:'Team Blue'};
function totals(){return events.reduce((s,e)=>{if(e.active)s[e.team]+=e.points;return s},{A:0,B:0})}
function latest(){return [...events].reverse().find(e=>e.active)}
function award(team,points){if(!['A','B'].includes(team)||![1,2].includes(points))throw Error('Only +1 or +2 manual awards are supported.');if(pending)return;events.push({id:'E'+(++sequence),team,points,active:true});render('Award recorded.')}
function propose(id){if(pending)return;const e=events.find(e=>e.id===id&&e.active);if(!e)return;const s=totals();s[e.team]-=e.points;pending={type:'undo',id};$('preview').hidden=false;txt('previewText','Undo '+id+': '+names[e.team]+' +'+e.points+'. Result will be '+names.A+' '+s.A+', '+names.B+' '+s.B+'.');setLocked(true);$('confirm').focus()}
function setLocked(locked){['a1','a2','b1','b2','nameA','nameB','undo','reset'].forEach(id=>$(id).disabled=locked);if(!locked&&!latest())$('undo').disabled=true}
function confirm(){if(!pending)return;const p=pending;pending=null;if(p.type==='reset'){events=[];sequence=0;session++}else{const e=events.find(e=>e.id===p.id&&e.active);if(e)e.active=false}$('preview').hidden=true;setLocked(false);render(p.type==='reset'?'New-session boundary: history cleared.':'Correction confirmed.');$('reset').focus()}
function cancel(){pending=null;$('preview').hidden=true;setLocked(false);render('Preview canceled. Scores and history unchanged.');$('reset').focus()}
function render(message=''){const s=totals();txt('scoreA',s.A);txt('scoreB',s.B);const e=latest();txt('undo',e?'Preview undo '+e.id+': '+names[e.team]+' +'+e.points:'No active award to undo');$('undo').disabled=!e;for(const t of ['A','B'])for(const p of [1,2])txt(t.toLowerCase()+p,names[t]+' +'+p);$('history').innerHTML=events.length?events.map(e=>'<div class="event"><div><strong>'+e.id+' · '+esc(names[e.team])+' +'+e.points+'</strong><br><span class="muted">Stable team '+e.team+' · '+(e.active?'Active':'Undone')+'</span></div><button data-event="'+e.id+'" '+(e.active?'':'disabled')+'>Preview undo '+e.id+'</button></div>').join(''):'<p>No awards yet.</p>';txt('announcement','Session '+session+' · '+names.A+' '+s.A+', '+names.B+' '+s.B+'. '+message)}
for(const t of ['A','B']){for(const p of [1,2])on(t.toLowerCase()+p,'click',()=>award(t,p));on('name'+t,'input',()=>{names[t]=$('name'+t).value.trim()||('Team '+t);render('Display label changed; team identity retained.')})}on('history','click',e=>{if(e.target.dataset.event)propose(e.target.dataset.event)});on('undo','click',()=>{if(latest())propose(latest().id)});on('reset','click',()=>{pending={type:'reset'};$('preview').hidden=false;const s=totals();txt('previewText','Clear this session at '+s.A+':'+s.B+' and all '+events.length+' awards? A new unsaved session starts at 0:0.');setLocked(true);$('confirm').focus()});on('confirm','click',confirm);on('cancel','click',cancel);window.app={award,totals,latest,propose,confirm,cancel,getEvents:()=>events};render('New unsaved session; no awards yet.');
</script></body></html>