body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
  }
  
  header {
    background-color: #4caf50;
    color: white;
    padding: 10px 20px;
    text-align: center;
  }
  
  main {
    padding: 20px;
    max-width: 800px;
    margin: auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  h2 {
    color: #4caf50;
  }
  h4 {
    color: white;
  }
  label {
    display: block;
    margin-bottom: 10px;
  }
  
  input {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    width: calc(100% - 20px);
  }
  
  button {
    background-color: #4caf50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    margin: 10px 0;
  }
  
  button:hover {
    background-color: #1e3fe0;
  }
  
  #log-list {
    margin-top: 20px;
  }
  
  .training-entry {
    border: 1px solid #ddd;
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
    background: #f9f9f9;
  }

  #current-time {
    font-size: 1.2em;
    text-align: center;
    margin-top: 5px;
    color: #f4f4f4;
  }

  .delete-btn {
    background-color: #f44336;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
    margin-top: 10px;
  }
  
  .delete-btn:hover {
    background-color: #d32f2f;
  }

  .adjust-buttons {
    display: flex;
    justify-content: center;
    margin-top: 5px;
  }
  
  .adjust-buttons {
    display: flex;
    justify-content: center;
    margin-top: 5px;
  }
  
  .adjust-btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 5px 10px;
    margin: 0 5px;
    cursor: pointer;
    font-size: 1em;
    border-radius: 4px;
  }
  
  .adjust-btn:hover {
    background-color: #0056b3;
  }

/* Modal-Stil */
#performance-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  #performance-modal-content {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
  }
  
  #modalPerformanceChart {
    margin: 20px 0;
  }
  
  #close-performance-btn {
    background-color: #f44336;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
  }
  
  #close-performance-btn:hover {
    background-color: #d32f2f;
  }