body {
    font-family: 'Segoe UI', sans-serif;
    background: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    width: 400px;
}
h1 {
    text-align: center;
    margin-bottom: 20px;
}
form label {
    display: block;
    margin-top: 10px;
}
form input {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
button {
    margin-top: 15px;
    width: 100%;
    padding: 10px;
    background: #660000;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
}
button:hover {
    background: #660000;
}
.error {
    color: red;
    font-size: 12px;
}
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    justify-content: center;
    align-items: center;
}
.modal-content {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    width: 300px;
}
.modal-content a, .modal-content button {
    display: block;
    margin: 10px 0;
    padding: 10px;
    background: #660000;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
}
.modal-content button {
    background: #555;
}