/* Basic CSS Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

.container {
  background: #1e1e1e;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  padding: 30px;
  max-width: 350px;
  width: 90%;
  text-align: center;
}

h1 {
  color: #00bfff;
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.brand {
  font-size: 1rem;
  color: #aaa;
  margin-bottom: 30px;
}

button {
  background-color: #00bfff;
  color: #121212;
  border: none;
  padding: 15px;
  font-size: 1rem;
  border-radius: 5px;
  cursor: pointer;
  width: 100%;
  transition: background-color 0.3s ease;
  margin-bottom: 20px;
}

button:hover {
  background-color: #00a3cc;
}

#otp {
  width: 100%;
  padding: 15px;
  font-size: 1.2rem;
  border: 2px solid #00bfff;
  border-radius: 5px;
  background-color: #2a2a2a;
  color: #00bfff;
  text-align: center;
  margin-bottom: 20px;
}

#otp::placeholder {
  color: #777;
}

/* Responsive Styling */
@media (max-width: 400px) {
  h1 {
    font-size: 1.5rem;
  }

  button {
    padding: 12px;
    font-size: 0.9rem;
  }

  #otp {
    padding: 12px;
    font-size: 1rem;
  }

  .brand {
    font-size: 0.9rem;
  }
}