Okno zmiany peronu na tablicy odjazdów

<main class="departure-board" data-platform="p3">
  <header><span>DWORZEC CENTRALNY · ODJAZDY</span><time datetime="08:42">08:42</time></header>
  <section class="departure" aria-labelledby="train-name">
    <div class="train"><small>IC 5410</small><h1 id="train-name">BAŁTYK</h1><p>do Gdyni Głównej</p></div>
    <dl class="journey"><div><dt>Odjazd</dt><dd>09:06</dd></div><div><dt>Peron</dt><dd id="active-platform">3</dd></div><div><dt>Tor</dt><dd id="active-track">5</dd></div></dl>
    <ol class="stops" aria-label="Główne stacje na trasie"><li>Warszawa</li><li>Iława</li><li>Malbork</li><li>Gdańsk</li><li>Gdynia</li></ol>
  </section>
  <div class="board-actions"><button id="platform-open" type="button">Zmień peron</button><p id="platform-result" role="status">Wejście na peron od hali głównej.</p></div>
</main>
<dialog id="platform-dialog" aria-labelledby="platform-title" aria-describedby="platform-desc">
  <header><small>ZMIANA MIEJSCA ODJAZDU</small><button class="platform-close" type="button" aria-label="Zamknij wybór peronu">×</button><h2 id="platform-title" tabindex="-1">Wybierz peron</h2><p id="platform-desc">Sprawdź tor i drogę dojścia przed zapisaniem zmiany.</p></header>
  <fieldset><legend>Dostępne miejsca</legend>
    <label><input type="radio" name="platform" value="p3" data-platform="3" data-track="5" data-access="hala główna" checked><span><b>03</b><i>Tor 5</i><small>Hala główna · 4 min</small></span></label>
    <label><input id="platform-p5" type="radio" name="platform" value="p5" data-platform="5" data-track="8" data-access="tunel północny"><span><b>05</b><i>Tor 8</i><small>Tunel północny · 6 min</small></span></label>
    <label><input type="radio" name="platform" value="p7" data-platform="7" data-track="11" data-access="kładka zachodnia"><span><b>07</b><i>Tor 11</i><small>Kładka zachodnia · 8 min</small></span></label>
  </fieldset>
  <div class="platform-actions"><button class="secondary platform-close" type="button">Anuluj</button><button id="platform-apply" type="button">Ustaw peron</button></div>
</dialog>

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