<script>
document.documentElement.dataset.embed = window.location.search.includes('type=embed') ? "yep" : "nope";
</script>

<main>
  <h1>Styling <code>&lt;details&gt;</code>: the <code>::details-content</code> pseudo</h1>

  <p class="warning">Your browser does not support <code>::details-content</code>, so this demo won’t work as intended. Please use a browser with support – such as Chrome 131 or newer – to check out this page.</p>

  <h2>Demo</h2>
  
  <div id="demo">
    <div id="example1">
      <details>
        <summary>First details element</summary>
        <p>Lorem ipsum dolor sit amet consectetur adipisicing elit.</p>
        <p>Architecto cupiditate ea optio modi quas sequi, esse libero asperiores debitis eveniet commodi hic ad.</p>
        <p>Illum fugit mollitia autem corrupti, explicabo aliquam?</p>
      </details>
    </div>
    
    <div id="example2">
      <details>
        <summary>Second details element</summary>
        <p>Lorem ipsum dolor sit amet consectetur adipisicing elit.</p>
        <p>Architecto cupiditate ea optio modi quas sequi, esse libero asperiores debitis eveniet commodi hic ad.</p>
        <p>Illum fugit mollitia autem corrupti, explicabo aliquam?</p>
      </details>
    </div>
  </div>

  <p>Demo for <a href="https://developer.chrome.com/blog/styling-details" target="_top">https://developer.chrome.com/blog/styling-details</a>.</p>

  <h2>The Code</h2>
  
  <h3>First details element</h3>
  <pre><code>details::details-content {
  border: 5px dashed hotpink;
}</code></pre>
  
  <h3>Second details element</h3>
  <pre><code>details[open]::details-content {
  border: 5px dashed hotpink;
}</code></pre>
</main>

@supports selector(::details-content) {
  .warning {
    display: none;
  }
}

#example1 details::details-content {
  border: 5px dashed hotpink;
}

#example2 details[open]::details-content {
  border: 5px dashed hotpink;
}

@layer reset {
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html,
  body {
    height: 100%;
  }
  
  html {
    font-size: 14px;
  }
}

@layer baselayout {
  html {
    color: #444;
    font-family: system-ui;
    line-height: 1.42;
    
    overscroll-behavior-x: none;
    overflow: auto;
  }

  main {
    max-width: 90ch;
    margin: 0 auto;
    padding-bottom: 10rem;
  }

  p {
    margin-bottom: 1em;
  }
  
  h1, h2 {
    margin: 4em 0 1em;
  }
  h3 {
    margin: 1em 0 0.5em;
  }
  
  #demo {
    padding: 1em;
    border: 1px solid #ccc;
    background: #f4f6f9;
  }
}

@layer code {
  pre {
    border: 1px solid #dedede;
    padding: 1em;
    background: #f7f7f7;
    font-family: "Courier 10 Pitch", Courier, monospace;
    overflow-x: auto;
    border-left: 0.4em solid cornflowerblue;
    tab-size: 4;
  }

  code:not(pre code) {
    background: #f7f7f7;
    border: 1px solid rgb(0 0 0 / 0.2);
    padding: 0.1rem 0.3rem;
    margin: 0.1rem 0;
    border-radius: 0.2rem;
    /*      display: inline-block; */
    -webkit-box-decoration-break: clone;
    white-space: pre-wrap;
  }
}

@layer warning {
  .warning {
    box-sizing: border-box;
    padding: 1em;
    margin: 1em 0;
    border: 1px solid #ccc;
    background: rgba(255 255 205 / 0.8);
  }

  .warning > :first-child {
    margin-top: 0;
  }

  .warning > :last-child {
    margin-bottom: 0;
  }

  .warning a {
    color: blue;
  }
  .warning--info {
    border: 1px solid #123456;
    background: rgb(205 230 255 / 0.8);
  }
  .warning--alarm {
    border: 1px solid red;
    background: #ff000010;
  }
}

/* Hide a bunch of stuff when embedded */
:root[data-embed="yep"] {
  main {
    padding: 2em 1em;
    
    :not(p.warning, p.warning *, #demo, #demo *, #demo ~ p, #demo ~ p *) {
      display: none;
    }
  }
  #demo ~ p {
    margin-top: 1em;
    text-align: center;
  }
}