```javascript
class BucketMasterCard extends HTMLElement {
  static get observedAttributes() {
    return ['title', 'icon'];
  }

  constructor() {
    super();
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
          background-color: #FFFFFF;
          border-radius: 8px;
          box-shadow: 0 1px 3px rgba(0,0,0,0.1);
          border: 1px solid #E4E7EB;
          overflow: hidden;
        }
        
        .card-header {
          padding: 1rem 1.5rem;
          border-bottom: 1px solid #E4E7EB;
          display: flex;
          align-items: center;
          gap: 0.75rem;
        }
        
        .card-title {
          font-weight: 600;
          margin: 0;
          color: #000000;
        }
        
        .card-body {
          padding: 1.5rem;
        }
        
        .card-footer {
          padding: 1rem 1.5rem;
          border-top: 1px solid #E4E7EB