class GlowingCursor extends HTMLElement {
  connectedCallback() {
    this.attachShadow({ mode: 'open' });
    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
          position: fixed;
          top: 0;
          left: 0;
          width: 100%;
          height: 100%;
          pointer-events: none;
          z-index: 9999;
        }
        
        .cursor {
          position: absolute;
          width: 20px;
          height: 20px;
          border-radius: 50%;
          background: radial-gradient(circle, #3B82F6, transparent);
          filter: blur(10px);
          transform: translate(-50%, -50%);
          pointer-events: none;
          transition: width 0.3s, height 0.3s;
        }
        
        .cursor-trail {
          position: absolute;
          width: 10px;
          height: 10px;
          border-radius: 50%;
          background: rgba(59, 130, 246, 0.3);
          filter: blur(5px);
          transform: translate(-50%, -50%);
          pointer-events: none;
          transition: opacity 0.3s;
        }
      </style>
      <div class="cursor"></div>
    `;
    
    this.initCursor();
  }
  
  initCursor() {
    const cursor = this.shadowRoot.querySelector('.cursor');
    const trails = [];
    
    document.addEventListener('mousemove', (e) => {
      // Update main cursor
      cursor.style.left = `${e.clientX}px`;
      cursor.style.top = `${e.clientY}px`;
      
      // Create trail
      const trail = document.createElement('div');
      trail.className = 'cursor-trail';
      trail.style.left = `${e.clientX}px`;
      trail.style.top = `${e.clientY}px`;
      this.shadowRoot.appendChild(trail);
      trails.push(trail);
      
      // Remove old trails
      if (trails.length > 10) {
        const oldTrail = trails.shift();
        if (oldTrail.parentNode) {
          oldTrail.style.opacity = '0';
          setTimeout(() => {
            if (oldTrail.parentNode) {
              this.shadowRoot.removeChild(oldTrail);
            }
          }, 300);
        }
      }
      
      // Remove trails after animation
      setTimeout(() => {
        if (trail.parentNode) {
          trail.style.opacity = '0';
          setTimeout(() => {
            if (trail.parentNode) {
              this.shadowRoot.removeChild(trail);
            }
          }, 300);
        }
      }, 1000);
    });
    
    // Hover effects
    document.addEventListener('mouseover', (e) => {
      if (e.target.tagName === 'A' || e.target.tagName === 'BUTTON') {
        cursor.style.width = '40px';
        cursor.style.height = '40px';
      }
    });
    
    document.addEventListener('mouseout', (e) => {
      if (e.target.tagName === 'A' || e.target.tagName === 'BUTTON') {
        cursor.style.width = '20px';
        cursor.style.height = '20px';
      }
    });
    
    // Click effect
    document.addEventListener('click', () => {
      cursor.style.width = '30px';
      cursor.style.height = '30px';
      setTimeout(() => {
        cursor.style.width = '20px';
        cursor.style.height = '20px';
      }, 100);
    });
  }
}

customElements.define('glowing-cursor', GlowingCursor);