/* Dark theme and friendly UI */

* {
    box-sizing: border-box;
  }
  
  body {
    background-color: #121212;
    color: #e0e0e0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
  }
  
  header, footer {
    text-align: center;
    padding: 10px 0;
  }
  
  h1, h2 {
    color: #ffffff;
  }
  
  #uploadSection {
    text-align: center;
    margin-bottom: 20px;
  }
  
  .file-label {
    font-size: 1.1em;
    margin-right: 10px;
  }
  
  input[type="file"] {
    background-color: #1e1e1e;
    border: 1px solid #333;
    color: #e0e0e0;
    padding: 5px;
    cursor: pointer;
  }
  
  #controls {
    background-color: #1e1e1e;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
  }
  
  .control-group {
    display: flex;
    flex-direction: column;
    margin: 5px;
  }
  
  .control-group label {
    margin-bottom: 5px;
    font-weight: bold;
  }
  
  .control-group input, .control-group select {
    padding: 8px;
    border: none;
    border-radius: 4px;
    background-color: #333;
    color: #e0e0e0;
    font-size: 1em;
  }
  
  .button-group {
    display: flex;
    gap: 10px;
    align-items: center;
  }
  
  .button-group button {
    padding: 10px 15px;
    background-color: #6200ea;
    border: none;
    border-radius: 4px;
    color: #ffffff;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease;
  }
  
  .button-group button:hover {
    background-color: #3700b3;
  }
  
  #summaryPanel, #recommendationPanel, #tradeHistoryPanel {
    background-color: #1e1e1e;
    padding: 15px;
    border-radius: 8px;
    max-width: 800px;
    margin: 0 auto 20px auto;
  }
  
  #documentation {
    background-color: #1e1e1e;
    padding: 15px;
    border-radius: 8px;
    max-width: 800px;
    margin: 20px auto;
  }
  
  #documentation p {
    line-height: 1.5em;
  }
  
  .hidden {
    display: none;
  }
  
  #plots {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
  }
  
  footer {
    margin-top: 40px;
    font-size: 0.9em;
    color: #888;
  }