.sidebar {
    width: 250px;
    background-color: #2c3e50;
    color: white;
    padding: 20px;
    flex-shrink: 0;
    height: 100vh;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 5px;
}

.sidebar .nav-link:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar .nav-link.active {
    background-color: #495057;
    color: white;
}

.main-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}