* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #f5f5f5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  background-color: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 600px;
}

h1 {
  color: #333;
  margin-bottom: 2rem;
  text-align: center;
}

.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #666;
  font-size: 0.9rem;
}

.input-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.input-group input:focus {
  outline: none;
  border-color: #4caf50;
}

.button {
  background-color: #4caf50;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
  width: 100%;
  margin-bottom: 1rem;
}

.button:hover {
  background-color: #45a049;
}

.result {
  display: none;
  margin-top: 2rem;
}

h3 {
  color: #666;
  margin-bottom: 1.5rem;
}

.link-group {
  margin-bottom: 1.5rem;
}

.link-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #666;
  font-size: 0.9rem;
  font-weight: 500;
}

.link-area {
  width: 100%;
  height: 40px;
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 5px;
  margin-bottom: 0.5rem;
  font-family: monospace;
  font-size: 0.9rem;
  resize: none;
  background-color: #f8f8f8;
}

.button-group {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.button-group .button {
  margin-bottom: 0;
}

.copy-btn {
  background-color: #2196f3;
  flex: 1;
}

.copy-btn:hover {
  background-color: #1976d2;
}

.go-btn {
  background-color: #ff9800;
  flex: 1;
}

.go-btn:hover {
  background-color: #f57c00;
}

.logoutBtn {
  background-color: #f44336;
}