* {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #f5f6fa;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  background: #ffffff;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 360px;
  text-align: center;
}

h1 {
  margin-bottom: 24px;
  font-size: 20px;
  color: #333;
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn {
  padding: 14px;
  border: none;
  border-radius: 8px;
  background: #4f46e5;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

button:hover {
  background: #4338ca;
}

button:active {
  transform: scale(0.98);
}