body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 20px;
    color: #333;
}

main {
    flex: 1;
    padding: 20px;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: rgb(246,254,255);
}

footer p {
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

h1 {
    text-align: center;
    color: #007bff;
}


.upload-section, .download-section {
    margin-bottom: 20px;
}

input[type="file"] {
    display: block;
    margin-top: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

.fixed-top-left {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1000;
  margin-top: 0; /* reset margin */
}

.big-button {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 20px;
  background-color: #2c7be5;
  color: white;
  font-weight: 600;
  font-family: Arial, sans-serif;
  font-size: 16px;
  border: none;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(44,123,229,0.4);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.big-button:hover {
  background-color: #1a5fcc;
  box-shadow: 0 4px 10px rgba(26,95,204,0.6);
}

.toggle-arrow {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    font-size: 18px;
    user-select: none;
    margin-bottom: 10px;
    font-size: 14px; 
}

#arrow {
    margin-right: 10px;
    transition: transform 0.3s ease;
}

.arrow-down {
    transform: rotate(0deg);
}

.arrow-up {
    transform: rotate(180deg);
}

.advanced-options {
    display: none;
    margin-top: 10px;
    border: 1px solid #ccc;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 4px;
}

.advanced-options label {
    display: block;
    margin-top: 10px;
}

.advanced-options input[type="text"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.tooltip {
  position: relative;
  display: inline-block;
  cursor: pointer;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 220px;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 5px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 125%; /* Position the tooltip above the icon */
  left: 50%;
  margin-left: -110px;
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

.border {
  border: 3px solid #DB2525; /* Add border around the content */
  padding: 7px; /* Add padding for better appearance */
  margin-top: 10px; /* Add margin to separate from the checkbox */
  display: grid; /* Use CSS Grid for layout */
  grid-template-columns: auto auto auto; /* four columns */
  gap: 10px; /* Space between columns */
}

.inline-inputs {
  display: flex;
  align-items: center;
  gap: 5px; 
}

.small-input {
  width: 4ch; /* Smaller width for integer inputs */
  margin-left: 5px; /* Margin to separate from labels */
}