body {
    background-color: #333333; /* Dark grey */
    color: white;
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

aside#toc {
    flex: 1;
    position: sticky;
    top: 20px;
    background-color: #444444; /* Slightly lighter dark grey */
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    margin-right: 40px;
}

aside h3 {
    color: #ff6600; /* Orange */
    margin-top: 0;
}

aside ul {
    list-style: none;
    padding: 0;
}

aside li {
    margin-bottom: 10px;
}

aside a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

aside a:hover {
    color: #ff6600;
}

main {
    flex: 3;
}

h1, h2 {
    color: #ff6600;
    border-bottom: 2px solid #ff6600;
    padding-bottom: 10px;
}

section {
    margin-bottom: 50px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

a {
    color: #ff6600;
    text-decoration: underline;
    transition: color 0.3s ease;
}

a:hover {
    color: white;
}

footer {
    background-color: #222222;
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}

footer p {
    margin: 0;
}

footer ul {
    list-style: none;
    padding: 0;
    margin: 10px 0 0;
}

footer li {
    display: inline;
    margin: 0 15px;
}

footer a {
    color: #ff6600;
    text-decoration: none;
}

footer a:hover {
    color: white;
}