Fomantic UI 设计系统.

<main class="reading-room"><header><div><p class="kicker">FOMANTIC UI · READING ROOM</p><h1>Make a shelf worth returning to.</h1><p class="intro">Rate three original reading prompts and build a local discussion shortlist.</p></div><span class="ui teal basic label">Local collection</span></header><div class="toolbar"><label for="topic">Show topic</label><select id="topic" class="ui selection dropdown"><option value="all">All topics</option><option value="type">Typography</option><option value="space">Space & rhythm</option><option value="color">Color</option></select><span id="visible-count">3 prompts</span></div><div class="book-grid"><article class="ui fluid card" data-topic="type" data-name="Letters in the margins"><div class="book-cover type-cover" aria-hidden="true"><span>Aa</span><small>FORM / COUNTERFORM</small></div><div class="content"><div class="meta">TYPOGRAPHY · 18 MIN</div><h2 class="header">Letters in the margins</h2><div class="description">Compare a narrow editorial column with a generous display line. Find where the rhythm changes.</div></div><div class="content"><label class="rating-label" id="label-type">Your interest</label><div class="ui huge star rating" data-rating="0" data-max-rating="5" role="slider" tabindex="0" aria-labelledby="label-type" aria-valuemin="0" aria-valuemax="5" aria-valuenow="0"></div><output class="score">Not rated</output><button class="ui tiny basic button clear-rating" type="button">Clear rating</button></div><div class="extra content"><button class="ui fluid teal button shortlist" aria-pressed="false">Add to shortlist</button></div></article><article class="ui fluid card" data-topic="space" data-name="The space between"><div class="book-cover space-cover" aria-hidden="true"><span></span><span></span><span></span><small>PAUSE / SEQUENCE</small></div><div class="content"><div class="meta">SPACE & RHYTHM · 12 MIN</div><h2 class="header">The space between</h2><div class="description">Remove one element from a crowded page. Rebalance the remaining space without adding decoration.</div></div><div class="content"><label class="rating-label" id="label-space">Your interest</label><div class="ui huge star rating" data-rating="0" data-max-rating="5" role="slider" tabindex="0" aria-labelledby="label-space" aria-valuemin="0" aria-valuemax="5" aria-valuenow="0"></div><output class="score">Not rated</output><button class="ui tiny basic button clear-rating" type="button">Clear rating</button></div><div class="extra content"><button class="ui fluid teal button shortlist" aria-pressed="false">Add to shortlist</button></div></article><article class="ui fluid card" data-topic="color" data-name="A color and its neighbor"><div class="book-cover color-cover" aria-hidden="true"><span></span><span></span><small>CONTEXT / CONTRAST</small></div><div class="content"><div class="meta">COLOR · 15 MIN</div><h2 class="header">A color and its neighbor</h2><div class="description">Place the same accent on two backgrounds. Describe the shift before changing its value.</div></div><div class="content"><label class="rating-label" id="label-color">Your interest</label><div class="ui huge star rating" data-rating="0" data-max-rating="5" role="slider" tabindex="0" aria-labelledby="label-color" aria-valuemin="0" aria-valuemax="5" aria-valuenow="0"></div><output class="score">Not rated</output><button class="ui tiny basic button clear-rating" type="button">Clear rating</button></div><div class="extra content"><button class="ui fluid teal button shortlist" aria-pressed="false">Add to shortlist</button></div></article></div><section class="ui message summary"><h2 class="header">Discussion shortlist</h2><p id="summary" role="status">No prompts selected. Add one to begin.</p><p class="scope">Ratings and selections stay in this browser page. These are original prompts, not published books.</p></section></main>

const cards=[...document.querySelectorAll('.book-grid article')],selected=new Set();
$('#topic').dropdown({onShow(){this.setAttribute('aria-expanded','true');},onHide(){this.setAttribute('aria-expanded','false');},onChange(value){let count=0;cards.forEach(card=>{card.hidden=value!=='all'&&card.dataset.topic!==value;if(!card.hidden)count++;});document.querySelectorAll('.toolbar .menu .item').forEach(item=>item.setAttribute('aria-selected',String(item.dataset.value===value)));document.querySelector('#visible-count').textContent=`${count} ${count===1?'prompt':'prompts'}`;}});
const dropdown=document.querySelector('.toolbar div.dropdown');dropdown.setAttribute('role','combobox');dropdown.setAttribute('aria-label','Show topic');dropdown.setAttribute('aria-expanded','false');dropdown.setAttribute('aria-haspopup','listbox');dropdown.querySelector('.menu').setAttribute('role','listbox');dropdown.querySelectorAll('.menu .item').forEach(item=>{item.setAttribute('role','option');item.setAttribute('aria-selected',String(item.dataset.value==='all'));});
$('.ui.rating').each(function(){const node=this,$rating=$(node);$rating.rating({maxRating:5,clearable:true,onRate(value){node.setAttribute('aria-valuenow',value);node.setAttribute('aria-valuetext',value?`${value} out of 5`:'Not rated');node.closest('article').querySelector('.score').textContent=value?`${value} / 5`:'Not rated';}});node.setAttribute('aria-valuetext','Not rated');node.querySelectorAll('.icon').forEach(i=>i.setAttribute('aria-hidden','true'));node.addEventListener('keydown',e=>{let value=Number($rating.rating('get rating'));if(['ArrowRight','ArrowUp'].includes(e.key))value=Math.min(5,value+1);else if(['ArrowLeft','ArrowDown'].includes(e.key))value=Math.max(0,value-1);else if(e.key==='Home')value=0;else if(e.key==='End')value=5;else return;e.preventDefault();$rating.rating('set rating',value);});node.closest('article').querySelector('.clear-rating').onclick=()=>{$rating.rating('clear rating');node.focus();};});
cards.forEach(card=>{card.querySelector('.shortlist').onclick=e=>{const id=card.dataset.topic,button=e.currentTarget;if(selected.has(id)){selected.delete(id);button.textContent='Add to shortlist';button.setAttribute('aria-pressed','false');}else{selected.add(id);button.textContent='Remove from shortlist';button.setAttribute('aria-pressed','true');}const names=cards.filter(c=>selected.has(c.dataset.topic)).map(c=>c.dataset.name);document.querySelector('#summary').textContent=names.length?`${names.length} selected: ${names.join('; ')}.`:'No prompts selected. Add one to begin.';};});

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