.search-box {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    padding: 0.5rem;
  }
  .search-icon {
    font-size: 1.3rem;
    color: gray;
  }
  .input-group .form-control::placeholder {
    font-style: italic;
    color: #999;
  }
  .btn-search {
    background-color: #2471d1;
    color: white;
    font-weight: bold;
    border-radius: 8px;
    padding: 0.5rem 1rem;
  }

  .drag-drop {
    height: 200px;
    border: 1px dashed #3b6e8a;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: #fefefe;
    transition: border-color 0.3s;
  }
  
  .drag-drop:hover {
    border-color: rgb(117, 183, 211);
  }
  
  .drag-drop.drag-over {
    border-color: #3b6e8a;
    background-color: #e9ffe9;
  }
  
  .drag-drop input[type="file"] {
    display: none;
  }
  
  .drag-drop label {
    font-size: 16px;
    color: #666;
    cursor: pointer;
  }