body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100vh;
  background: #f8f9fa;
}


/* Navigation Bar */
nav {
  width: 100%;
  background: #007bff;
  padding: 12px 0;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

nav a {
  color: white;
  text-decoration: none;
  font-size: 16px;
  margin: 0 15px;
  font-weight: bold;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #d4e0f5;
}

.container {
  text-align: center;
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  width: 95%;
  max-width: 400px;
  margin-top: 20px;
}

h1 {
  font-size: 22px;
  margin-bottom: 15px;
}

.options button {
  margin: 10px;
  padding: 12px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background-color: #007bff;
  color: white;
  font-size: 16px;
  transition: background 0.3s ease;
}

.options button:hover {
  background-color: #0056b3;
}

textarea, input {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  background-color: #28a745;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background-color: #218838;
}

.hidden {
  display: none;
}

p {
  margin-top: 10px;
  color: #333;
  font-weight: bold;
}

.notice {
  font-size: 14px;
  color: #d9534f;
  margin-bottom: 15px;
}