* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;  /* Light background */
    color: #000000;  /* Black text color */
    transition: background-color 0.3s, color 0.3s;
  }
  
  body.dark-mode {
    background-color: #1f2937;  /* Dark mode background color */
    color: #ffffff;  /* White text for dark mode */
  }
  
  .container {
    text-align: center;
    background-color: #fff;  /* White background for container */
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 340px;
    transition: background-color 0.3s;
    max-width: 100%;
    margin: 0 10px;
  }
  
  body.dark-mode .container {
    background-color: #333;  /* Dark background for container in dark mode */
  }
  
  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }
  
  button {
    padding: 5px 15px;
    font-size: 14px;
    cursor: pointer;
    background-color: #a855f7;  /* Button color */
    color: white;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s, transform 0.1s;
  }
  
  button:hover {
    background-color: #8b4bf7; /* Hover state for button */
  }
  
  button:active {
    transform: scale(0.98);
  }
  
  button#toggle-theme {
    background-color: #a855f7;  /* Same button color for theme toggle */
    color: white;
  }
  
  button#toggle-theme:hover {
    background-color: #8b4bf7;
  }
  
  .color-picker,
  .paste-color {
    margin-bottom: 20px;
  }
  
  input[type="color"],
  input[type="text"] {
    padding: 8px;
    font-size: 16px;
    width: 100%;
    border-radius: 5px;
    border: 1px solid #ccc;
    margin-top: 8px;
    transition: border 0.3s;
  }
  
  input[type="color"]:focus,
  input[type="text"]:focus {
    border-color: #4CAF50;
  }
  
  .result {
    margin-top: 20px;
  }
  
  .color-box {
    width: 100px;
    height: 100px;
    margin: 10px auto;
    border-radius: 5px;
    background-color: #ffffff;
    border: 1px solid #ccc;
  }
  
  .formats {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
  }
  
  .formats div {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  button.copy-btn {
    background-color: #a855f7; /* Button color */
    color: white;
    padding: 5px 10px;
    margin-left: 10px;
    cursor: pointer;
    border: none;
    border-radius: 3px;
    font-size: 14px;
    transition: background-color 0.3s;
  }
  
  button.copy-btn:hover {
    background-color: #8b4bf7;
  }
  
  button.copy-btn:active {
    transform: scale(0.98);
  }
  
  /* Dark mode improvements */
  body.dark-mode input[type="color"],
  body.dark-mode input[type="text"] {
    background-color: #555;
    color: #e0e0e0;
    border-color: #444;
  }
  
  body.dark-mode button.copy-btn {
    background-color: #a855f7; /* Button color */
    color: white;
  }
  
  body.dark-mode button.copy-btn:hover {
    background-color: #8b4bf7;
  }
  
  /* Responsive Layout */
  @media (max-width: 480px) {
    .container {
      width: 90%;
      padding: 20px;
    }
  
    button {
      font-size: 12px;
    }
  
    .color-picker,
    .paste-color {
      margin-bottom: 15px;
    }
  
    .formats div {
      flex-direction: column;
      align-items: flex-start;
    }
  
    button.copy-btn {
      margin-top: 5px;
    }
  }
  
  /* Larger Screen Adjustments */
  @media (min-width: 1024px) {
    .container {
      width: 50%;
      max-width: 700px;
    }
  
    .color-picker,
    .paste-color {
      margin-bottom: 25px;
    }
  
    .formats div {
      justify-content: space-between;
    }
  
    button.copy-btn {
      padding: 7px 15px;
    }
  
    header {
      margin-bottom: 30px;
    }
  }