layout2vector/tests/demos/shadow-dom.html at main · node-projects/layout2vector · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Demo: Declarative Shadow DOM</title>
  <style>
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: Arial, sans-serif; padding: 20px; background: #fafafa; }
    h2 { margin-bottom: 10px; font-size: 18px; }
  </style>
</head>
<body>
  <div id="root">
    <h2>Declarative Shadow DOM</h2>

    <!-- Card component with declarative shadow DOM -->
    <div class="my-card" style="margin: 10px 0;">
      <template shadowrootmode="open">
        <style>
          :host {
            display: block;
            width: 280px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
            background: white;
          }
          .header {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 16px;
            font-size: 18px;
            font-weight: bold;
          }
          .body {
            padding: 16px;
            color: #333;
            font-size: 14px;
            line-height: 1.5;
          }
          .footer {
            padding: 12px 16px;
            background: #f5f5f5;
            border-top: 1px solid #e0e0e0;
            font-size: 12px;
            color: #888;
          }
        </style>
        <div class="header">Shadow Card Title</div>
        <div class="body">
          This content is inside a declarative shadow DOM. It demonstrates
          encapsulated styling and layout extraction.
        </div>
        <div class="footer">Footer text</div>
      </template>
    </div>

    <!-- Button component with shadow DOM -->
    <div class="my-button" style="margin: 10px 0; display: inline-block;">
      <template shadowrootmode="open">
        <style>
          :host {
            display: inline-block;
          }
          button {
            padding: 10px 24px;
            border: none;
            border-radius: 6px;
            background: #1e88e5;
            color: white;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 2px 4px rgba(0,0,0,0.2);
          }
        </style>
        <button>Shadow Button</button>
      </template>
    </div>

    <!-- Badge component with shadow DOM -->
    <div class="my-badge" style="margin: 10px; display: inline-block;">
      <template shadowrootmode="open">
        <style>
          :host {
            display: inline-flex;
            align-items: center;
            gap: 8px;
          }
          .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #4caf50;
          }
          .label {
            font-size: 14px;
            font-weight: 500;
            color: #333;
            background: #e8f5e9;
            padding: 4px 12px;
            border-radius: 12px;
          }
        </style>
        <div class="dot"></div>
        <div class="label">Online</div>
      </template>
    </div>

    <!-- Nested shadow DOM -->
    <div class="my-outer" style="margin: 20px 0;">
      <template shadowrootmode="open">
        <style>
          :host {
            display: block;
            padding: 16px;
            background: #e3f2fd;
            border: 2px solid #90caf9;
            border-radius: 8px;
            width: 320px;
          }
          .title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 12px;
            color: #1565c0;
          }
        </style>
        <div class="title">Outer Shadow Root</div>
        <div class="my-inner">
          <template shadowrootmode="open">
            <style>
              :host {
                display: block;
                padding: 12px;
                background: #fff3e0;
                border: 1px dashed #ff9800;
                border-radius: 6px;
              }
              .inner-text {
                font-size: 13px;
                color: #e65100;
              }
            </style>
            <div class="inner-text">Nested inner shadow DOM content</div>
          </template>
        </div>
      </template>
    </div>
  </div>
</body>
</html>