body {
    background-color: #000;
    margin: 0;
    padding: 0;
    font-family: 'Lato', sans-serif;
    color: #fff;
}

header {
    text-align: center;
    padding: 20px;
}

header img {
    max-width: 100%;
    height: auto;
}

nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    background-color: #111;
    padding: 10px 0;
}

nav a {
    color: #FF6666;
    text-decoration: none;
    font-size: 22px;
    margin: 10px 20px;
    transition: color 0.3s;
}

nav a:hover {
    color: #FF0000;
}

nav a.active {
    color: #990000;
    font-weight: bold;
}

hr {
    border: none;
    border-top: 1px solid #666;
    margin: 0;
}

.guestbook-container {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
    background-color: #111;
    border-radius: 8px;
}

h2, h3 {
    color: #FF0000;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 100;
}

form label {
    display: block;
    margin-bottom: 10px;
    font-size: 18px;
}

form input[type="text"],
form input[type="email"],
form input[type="number"],
form select,
form textarea {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 15px;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    background-color: #222;
    color: #fff;
    box-sizing: border-box;
}

form button {
    background-color: #FF6666;
    color: #000;
    padding: 10px 20px;
    border: none;
    font-size: 18px;
    cursor: pointer;
    border-radius: 4px;
}

form button:hover {
    background-color: #FF0000;
    color: #fff;
}

.emoji-picker {
    text-align: center;
    margin-bottom: 10px;
}

.emoji {
    font-size: 24px;
    margin: 0 5px;
    cursor: pointer;
}

.star-rating {
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-start;
    margin-bottom: 15px;
}

.star-rating input[type="radio"] {
    display: none;
}

.star-rating label {
    font-size: 30px;
    color: #ccc;
    cursor: pointer;
    transition: color 0.2s;
}

.star-rating input[type="radio"]:checked ~ label {
    color: gold;
}

.star-rating label:hover,
.star-rating label:hover ~ label {
    color: gold;
}

.entry {
    border-bottom: 1px solid #555;
    padding: 15px 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.entry strong {
    font-size: 18px;
    color: #FF6666;
}

.rating-display {
    color: gold;
    font-size: 22px;
    margin: 5px 0;
}

.entry p {
    font-size: 17px;
    line-height: 1.6;
    color: #ddd;
    white-space: pre-line;
}

.reply {
    margin-top: 10px;
    color: #88f;
    font-style: italic;
}

.error {
    color: red;
    font-size: 18px;
    margin-bottom: 15px;
    text-align: center;
}

@media (max-width: 768px) {
    .guestbook-container {
        padding: 15px;
    }

    nav {
        flex-direction: column;
        align-items: center;
    }

    nav a {
        margin: 10px 0;
        font-size: 24px;
    }

    form input,
    form textarea,
    form select {
        font-size: 18px;
    }

    .entry p {
        font-size: 16px;
    }

    .star-rating label {
        font-size: 28px;
    }
}