header {
  background: #ffffff;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #007bff;
}

.loading {
  margin-top: 20px;
  font-size: 18px;
  color: #007bff;
}

.hidden {
  display: none;
}

body {
  background: #f7f7f7;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 600px;
  margin: 80px auto;
  background: white;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  text-align: center;
}

h1 {
  margin-bottom: 10px;
  font-size: 36px;
}

.tagline {
  color: #666;
  margin-bottom: 30px;
}

.input-box {
  display: flex;
  gap: 10px;
}

input {
  flex: 1;
  padding: 12px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 8px;
}

button {
  padding: 12px 20px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #005fcc;
}

#result {
  margin-top: 30px;
  text-align: left;
}

#result pre {
  background: #f0f0f0;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 14px;
}