/* Reset some default browser styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f5f7fa;
  color: #2c3e50;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 15px;
}

.container {
  background-color: #ffffff;
  padding: 40px;
  border-radius: 12px;
  max-width: 600px;
  width: 100%;
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.08);
}

h1 {
  text-align: center;
  font-size: 28px;
  margin-bottom: 30px;
  color: #34495e;
}

label {
  font-weight: 600;
  display: block;
  margin: 20px 0 8px;
  color: #2d3436;
}

input[type="file"] {
  padding: 6px 0;
  font-size: 14px;
}

button {
  display: block;
  margin: 30px auto 0;
  background-color: #2980b9;
  color: #ffffff;
  padding: 12px 24px;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #2471a3;
}

#result {
  margin-top: 40px;
  background-color: #f2f4f6;
  border-radius: 10px;
  padding: 20px;
  white-space: pre-wrap;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.6;
  color: #2c3e50;
}

h3 {
  color: #27ae60;
  margin-bottom: 10px;
}

h3:last-of-type {
  color: #e74c3c;
}