/* Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: #f8f8f8;
    color: #333;
    display: flex;
    justify-content: center;
    padding: 2rem;
    transition: background-color 0.3s, color 0.3s;
  }
  
  .container {
    background-color: #fff;
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
    transition: background-color 0.3s, color 0.3s;
  }
  
  h1 {
    margin-bottom: 1rem;
  }
  
  input[type="number"] {
    width: 100%;
    padding: 1rem;
    margin: 1rem 0;
    font-size: 1rem;
    border-radius: 8px;
    border: 1px solid #ccc;
    background-color: #fff;
    color: #333;
    transition: background-color 0.3s, color 0.3s;
  }
  
  button {
    padding: 1rem;
    margin-top: 0.5rem;
    width: 100%;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    background-color: #007bff;
    color: #fff;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  
  button:hover {
    background-color: #0056b3;
  }
  
  .hidden {
    display: none;
  }
  
  #budgetResults ul {
    list-style: none;
    margin-top: 1rem;
    margin-bottom: 1rem;
  }
  
  #budgetResults li {
    font-size: 1.2rem;
    margin: 0.5rem 0;
  }
  
  #chatGPTLink a {
    display: inline-block;
    margin-top: 1rem;
    padding: 1rem 2rem;
    background-color: #28a745;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s;
  }
  
  #chatGPTLink a:hover {
    background-color: #1e7e34;
  }
  
  .dark-toggle {
    margin-top: 1.5rem;
    background-color: #6c757d;
  }
  
  .dark-toggle:hover {
    background-color: #495057;
  }
  
  /* Dark Mode Styles */
  body.dark-mode {
    background-color: #121212;
    color: #f0f0f0;
  }
  
  body.dark-mode .container {
    background-color: #1e1e1e;
    color: #f0f0f0;
  }
  
  body.dark-mode input[type="number"] {
    background-color: #2c2c2c;
    color: #f0f0f0;
    border: 1px solid #555;
  }
  
  body.dark-mode button {
    color: #fff;
  }
  
  body.dark-mode #chatGPTLink a {
    background-color: #28a745;
    color: #fff;
  }
  
  body.dark-mode #chatGPTLink a:hover {
    background-color: #1e7e34;
  }