/* Reset styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  /* Base styles */
  body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    font-size: 16px;
    line-height: 1.4;
    margin: 0;
    padding: 0;
  }
  
  .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
  }
  
  h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
  }
  
  ul {
    list-style: none;
    margin-bottom: 1rem;
  }
  
  li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem;
    border-bottom: 1px solid #ddd;
  }
  
  li:last-child {
    border-bottom: none;
  }
  
  input[type="text"],
  input[type="tel"] {
    font-size: 1rem;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    border: 1px solid #ddd;
    width: 100%;
  }
  
  button {
    background-color: #008CBA;
    color: #fff;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 0.5rem;
    margin-right: 0.5rem;
  }
  
  button:hover {
    background-color: #005d6b;
  }
  
  .hidden {
    display: none;
  }
  
  /* Specific styles for each section */
  .registration-section button,
  .list-section button,
  .item-section button {
    display: block;
    margin: 1rem 0;
  }
  
  .list-section button,
  .item-section button {
    background-color: #ddd;
    color: #333;
  }
  
  .list-section button:hover,
  .item-section button:hover {
    background-color: #bbb;
  }
  
  .item-section #list-name {
    margin-bottom: 1rem;
  }
  
  .share-section #shared-list-container {
    padding: 0;
  }
  
  .share-section #shared-list-container li {
    border-bottom: none;
  }