body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 500px;
    margin: 50px auto;
    padding: 25px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 6px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    margin-top: 12px;
    font-weight: bold;
    color: #444;
}

input {
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

button, .btn-link {
    display: inline-block;
    margin-top: 20px;
    padding: 12px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    text-decoration: none;
    box-sizing: border-box;
    width: 100%;
}

button:hover, .btn-link:hover {
    background-color: #0056b3;
}

/* Spinner CSS */
.spinner {
    margin: 0 auto;
    width: 35px;
    height: 35px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007BFF;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}