body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
}

.upload-container {
  background: #fff;
  padding: 40px 30px;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  text-align: center;
}

.upload-container h1 {
  margin-bottom: 30px;
  font-size: 1.8em;
  font-weight: normal;
  color: #333;
}

.input-group {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

input[type="file"] {
  background: #ffffff;
  border: 2px dashed #ccc;
  padding: 20px;
  border-radius: 5px;
  text-align: center;
  width: 250px;
  font-size: 0.9em;
  color: #555;
  cursor: pointer;
  transition: border-color 0.3s;
}

input[type="file"]:hover {
  border-color: #888;
}

#processBtn {
  padding: 10px 20px;
  background: #007BFF;
  border: none;
  border-radius: 5px;
  font-size: 0.95em;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s, transform 0.1s;
}

#processBtn :hover {
  background: #0056b3;
}

#processBtn :active {
  transform: scale(0.98);
}


.container {
  max-width: 1240px;
  margin: auto;
  text-align: center;
}

h1 {
  margin-bottom: 20px;
}

input[type="file"] {
  margin: 10px 0;
  display: block;
}

button {
  padding: 8px 16px;
  cursor: pointer;
  margin-bottom: 10px;
  margin-right: 5px;
}

.results {
  text-align: left;
}

.email-lists {
  display: grid;    
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

.email-category {
  background: #f9f9f9;
  border: 1px solid #ddd;
  padding: 15px;
  border-radius: 5px;
}

.email-category h3 {
  margin-top: 0;
}

.email-category ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.email-category li {
  margin-bottom: 5px;
  font-size: 0.9em;
  word-wrap: break-word;
  background: #fff;
  padding: 5px;
  border-radius: 3px;
}

.download-btn {
  float: right;
  margin-top: -40px;
}