body {
    background-color: #1B0B4C; /* Dark Violet Background */
    background-image: url('data:image/svg+xml,%3Csvg width="12" height="12" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath d="M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-4c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3z" fill="%233C2C8C" fill-opacity="0.4"/%3E%3C/svg%3E'); /* Subtle star background pattern */
    color: #E0BBE4; /* Lavender Text */
    font-family: 'VT323', monospace;
    font-size: 18px;
    margin: 0;
    padding: 0;
}

header {
    background: linear-gradient(to bottom, #9E7AFF, #3C2C8C);
    border-bottom: 4px solid #00CED1;
    text-align: center;
    padding: 10px 0;
    text-shadow: 2px 2px #FF69B4;
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    color: #fff;
    font-size: 2.5em;
    margin: 0;
}

nav a {
    color: #00CED1;
    text-decoration: none;
    margin: 0 15px;
    font-size: 1.2em;
    transition: color 0.3s;
}

nav a:hover {
    color: #FF69B4;
    text-decoration: underline;
}

.container {
    display: flex;
    padding: 20px;
    max-width: 960px;
    margin: 20px auto;
}

main {
    flex: 3;
    margin-right: 20px;
}

aside {
    flex: 1;
}

.card {
    background-color: #3C2C8C;
    border: 2px solid #9E7AFF;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 5px 5px 0px #00CED1;
}

h2, h3, h4 {
    font-family: 'Orbitron', sans-serif;
    color: #00CED1;
    border-bottom: 2px dotted #9E7AFF;
    padding-bottom: 5px;
    margin-top: 0;
}

ul {
    list-style-type: '✧ ';
    padding-left: 20px;
}

.highlight {
    color: #FF69B4;
    font-weight: bold;
}

.under-construction, .sidebar-gif {
    display: block;
    margin: 20px auto;
    max-width: 100%;
}

.sidebar a {
    display: block;
    background-color: #FF69B4;
    color: #1B0B4C;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    text-decoration: none;
    border: 2px solid #E0BBE4;
    box-shadow: 3px 3px 0px #9E7AFF;
    transition: all 0.2s;
}

.sidebar a:hover {
    background-color: #00CED1;
    transform: translate(3px, 3px);
    box-shadow: 0px 0px 0px #9E7AFF;
}

footer {
    text-align: center;
    padding: 20px;
    border-top: 4px solid #00CED1;
    background: linear-gradient(to top, #9E7AFF, #3C2C8C);
    color: #fff;
    font-size: 0.9em;
}

.guestbook-form {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
}

.guestbook-form label {
    font-family: 'Orbitron', sans-serif;
    color: #00CED1;
    margin-bottom: 5px;
    font-size: 1.1em;
}

.guestbook-form input,
.guestbook-form textarea {
    background-color: #1B0B4C;
    border: 2px inset #9E7AFF;
    color: #E0BBE4;
    font-family: 'VT323', monospace;
    padding: 8px;
    margin-bottom: 15px;
    font-size: 16px;
}

.guestbook-form input:focus,
.guestbook-form textarea:focus {
    outline: 2px solid #FF69B4;
}

.guestbook-form button {
    font-family: 'Orbitron', sans-serif;
    background-color: #FF69B4;
    color: #1B0B4C;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    text-decoration: none;
    border: 2px solid #E0BBE4;
    box-shadow: 3px 3px 0px #9E7AFF;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.1em;
}

.guestbook-form button:hover {
    background-color: #00CED1;
    transform: translate(3px, 3px);
    box-shadow: 0px 0px 0px #9E7AFF;
}

/* --- Guestbook Entry Styles --- */

.guestbook-entry {
    background-color: #1B0B4C;
    border: 2px dashed #9E7AFF;
    padding: 15px;
    margin-bottom: 20px;
}

.guestbook-entry:last-child {
    margin-bottom: 0;
}

.entry-meta {
    font-size: 0.9em;
    color: #00CED1;
    border-bottom: 1px solid #3C2C8C;
    padding-bottom: 5px;
    margin: 0 0 10px 0;
}

.entry-message {
    margin: 0;
    line-height: 1.4;
    font-size: 1.1em;
}

 .marquee-container {
        width: 100%;
        overflow: hidden;
        background: #000000;
        border-top: 2px solid #ff00ff;
        border-bottom: 2px solid #ff00ff;
        box-shadow: 0 0 15px #ff00ff;
        margin-bottom: 1em;
    }

    .marquee {
        display: inline-block;
        white-space: nowrap;
        animation: marquee 20s linear infinite;
        font-family: 'VT323', monospace;
        font-size: 1.5em;
        color: #00ff00;
    }

    .marquee p {
        display: inline-block;
        padding-left: 100%;
    }

    @keyframes marquee {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(-100%);
        }
    }