body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #ece9e6, #ffffff);
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.container {
  background: #fff;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
  text-align: center;
}

h2 {
  margin-bottom: 1.5rem;
  color: #333;
}

.info {
  margin-top: 20px;
 font-size: 18px;
 font-weight: bold;
}

input {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
}

button {
  width: 100%;
  padding: 0.75rem;
  background: #4e54c8;
  border: none;
  color: #fff;
  font-weight: bold;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background: #5d61e7;
}

a {
  color: #4e54c8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

#popup {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 8px;
  display: inline-block;
  font-weight: bold;
}

.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

@media (max-width: 500px) {
  .container {
    padding: 1.5rem;
    width: 90%;
  }
}