body {
    background-color: #f0f2f5;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}
input {
    width: 90%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}
button {
    width: 96%;
    padding: 12px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
}
button:hover {
    background-color: #0056b3;
}
.message {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}
.success { background-color: #d4edda; color: #155724; }
.error { background-color: #f8d7da; color: #721c24; }
a { text-decoration: none; color: #007bff; }