/* style.css */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
    padding: 20px;
}

h1 {
    color: #333;
}

form {
    background: #fff;
    padding: 20px;
    margin-top: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"],
input[type="email"] {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
}

input[type="submit"],
button {
    display: inline-block;
    padding: 10px 15px;
    background: #333;
    color: #fff;
    border: none;
    cursor: pointer;
}

input[type="submit"]:hover,
button:hover {
    background: #555;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-height: 80vh;
    overflow-y: auto;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

#letterPreview {
    white-space: pre-wrap;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    padding: 20px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
}