body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: #f0f2f5;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 600px;
  margin: 60px auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
}

.form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.form input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  outline: none;
}

.form button {
  padding: 10px 18px;
  border: none;
  background: #007bff;
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s;
}

.form button:hover {
  background: #0056b3;
}

.results {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.otp-box {
  padding: 12px 20px;
  background: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 120px;
  text-align: center;
}

.otp-box:hover {
  background: #e9ecef;
  transform: translateY(-2px);
}