body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 600px;
    margin: 40px auto;
    padding: 30px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
h1, h2 {
    text-align: center;
    color: #2c3e50;
}
form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
label {
    font-weight: bold;
    margin-bottom: -10px;
}
input[type="text"],
input[type="password"],
input[type="number"] {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}
.checkbox-container {
    display: flex;
    align-items: center;
    gap: 10px;
}
.checkbox-container label {
    font-weight: normal;
}
button {
    padding: 12px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}
button:hover {
    background-color: #2980b9;
}
.hidden {
    display: none;
}
#status-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
}
.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}