body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    background-color: #f9f9f9;
}

h1 {
    text-align: center;
}

table {
    border-collapse: collapse;
    width: 90%;
    max-width: 1200px;
    margin-top: 20px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

#dropZone {
    border: 2px dashed #0044cc;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    background-color: #f9f9f9;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    max-width: 500px;
    margin: 30px auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }
  
  #dropZone:hover {
    background-color: #eef4ff;
    border-color: #002f99;
  }
  
  #dropZone label {
    color: #0044cc;
    cursor: pointer;
    text-decoration: underline;
    font-weight: bold;
  }
  

th, td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: center;
}

th {
    background-color: #0044cc;
    color: white;
    position: sticky;
    top: 0;
    z-index: 2;
}

tr:nth-child(odd) {
    background-color: #f2f2f2;
}

tr:nth-child(even) {
    background-color: #ffffff;
}

tbody {
    display: block;
    max-height: calc(100vh - 48vh);
    overflow-y: auto;
}

thead {
    position: sticky;
    top: 0;
    z-index: 3;
}

tbody tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

thead tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

.download-info {
    margin: 10px 0;
    font-size: 16px;
    font-weight: bold;
    color: #333;
    text-align: center;
}


input[type="file"] {
    margin: 20px 0;
}