body {
    font-family: 'Noto Sans JP', sans-serif;
    background: linear-gradient(120deg, #fdfbfb 0%, #ebedee 100%);
    margin: 0;
    padding: 30px;
  }
  
  .container {
    max-width: 600px;
    margin: auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
  }
  
  textarea {
    width: 100%;
    height: 100px;
    font-size: 16px;
    padding: 12px;
    margin-bottom: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    resize: vertical;
    box-sizing: border-box;
  }
  
  button#saveBtn {
    width: 100%;
    background-color: #007acc;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button#saveBtn:hover {
    background-color: #005f99;
  }
  
  #savedTexts {
    margin-top: 24px;
  }
  
  .saved-item {
    background: #f0f8ff;
    padding: 16px;
    margin-bottom: 12px;
    border-radius: 8px;
    position: relative;
    font-size: 15px;
    color: #333;
    line-height: 1.5;
    white-space: pre-wrap;
    box-sizing: border-box;
  }
  
  .button-group {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
  }
  
  .button-group button {
    padding: 6px 12px;
    font-size: 13px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: white;
    transition: background-color 0.3s ease;
  }
  
  .copyBtn {
    background-color: #007acc;
  }
  .copyBtn:hover {
    background-color: #005f99;
  }
  
  .editBtn {
    background-color: #f39c12;
  }
  .editBtn:hover {
    background-color: #d68910;
  }
  
  .deleteBtn {
    background-color: #e74c3c;
  }
  .deleteBtn:hover {
    background-color: #c0392b;
  }