body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}
.container {
  background: rgba(255, 255, 255, 0.95);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}
h1 {
  color: #333;
  text-align: center;
  margin-bottom: 30px;
  font-size: 2.5em;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}
.section {
  margin-bottom: 25px;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 10px;
  border-left: 4px solid #667eea;
}
label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #555;
}
textarea,
input {
  width: 100%;
  padding: 12px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-family: "Courier New", monospace;
  font-size: 14px;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}
textarea:focus,
input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}
button {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 12px 30px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: block;
  margin: 20px auto;
}
button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}
.result {
  background: #e8f5e8;
  border: 2px solid #4caf50;
  padding: 15px;
  border-radius: 8px;
  margin-top: 20px;
  word-break: break-all;
  font-family: "Courier New", monospace;
  font-size: 12px;
}
.copy-btn {
  background: #4caf50;
  padding: 8px 16px;
  font-size: 12px;
  margin: 10px 0 0 0;
}
.copy-btn:hover {
  background: #45a049;
}