* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #121212;
  color: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background-color: #1e1e1e;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
  width: 400px;
  text-align: center;
}

h1 {
  color: #90caf9;
  margin-bottom: 20px;
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  border: 1px solid #333;
  border-radius: 5px;
  font-size: 14px;
  background-color: #2a2a2a;
  color: #f5f5f5;
}

input:focus, textarea:focus {
  border-color: #90caf9;
  outline: none;
}

.button-section {
  margin-top: 20px;
}

.btn {
  background-color: #2196f3;
  color: #fff;
  border: none;
  padding: 10px 20px;
  margin: 5px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #1e88e5;
}

.btn:active {
  background-color: #1565c0;
}

.message {
  margin-top: 20px;
  font-size: 16px;
  color: #90caf9;
}

.message.error {
  color: #e57373;
}