body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: #0f172a;
  color: #f1f5f9;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px; /* Added padding for smaller screens */
  box-sizing: border-box;
}

.container {
  text-align: center;
  width: 100%;
  max-width: 600px;
  padding: 30px 20px;
  background-color: #1e293b;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.4);
  box-sizing: border-box;
}

h1 {
  font-size: 2rem;
  color: #38bdf8;
}

p {
  font-size: 1rem;
  margin: 16px 0;
}

button {
  background-color: #0ea5e9;
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 15px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s;
  width: 100%; /* Full-width on mobile */
  max-width: 300px; /* Optional: limit width on larger screens */
}

button:hover {
  background-color: #0284c7;
}

/* Responsive adjustments */
@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }

  p {
    font-size: 0.95rem;
  }

  .container {
    padding: 20px 15px;
  }

  button {
    font-size: 14px;
    padding: 12px 20px;
  }
}