body {
    font-family: sans-serif;
    margin: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

.container {
    display: flex;
}

.sidebar {
    width: 200px;
    background-color: #e9e9e9;
    padding: 1em;
    height: calc(100vh - 58px); /* Adjust 58px based on header height */
    position: sticky;
    top: 0;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.sidebar ul li a {
    text-decoration: none;
    color: #333;
    display: block;
    padding: 0.5em 0;
}

.sidebar ul li a:hover {
    color: #007bff;
}

main {
    padding: 1em;
    flex-grow: 1; /* Allow main content to take remaining space */
}

.category {
    margin-bottom: 2em;
}

.category h2 {
    border-bottom: 2px solid #333;
    padding-bottom: 0.5em;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1em;
}

.project-item {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    overflow: hidden;
    text-align: center;
}

.project-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.project-item h3 {
    margin: 0.5em 0;
}

.project-item p {
    font-size: 0.9em;
    padding: 0 0.5em 0.5em;
    color: #666;
}

.project-item a {
    text-decoration: none;
    color: inherit;
}

footer {
    text-align: center;
    padding: 1em 0;
    background-color: #333;
    color: #fff;
    position: relative;
    bottom: 0;
    width: 100%;
}