/* Sidebar styles */
.sidenav {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 250px;
    background-color: #2c3e50;
    color: #fff;
    padding-top: 20px;
    font-family: Arial, sans-serif;
    z-index: 1000;
}

.sidenav-header {
    padding-left: 20px;
}

.sidenav-header a {
    display: flex;
    align-items: center;
    color: #fff;
    text-decoration: none;
}

.sidenav-header img {
    margin-right: 10px;
}

.navbar-nav {
    list-style: none;
    padding: 0;
}

.navbar-nav .nav-item {
    margin: 15px 0;
}

.navbar-nav .nav-link {
    color: #ecf0f1;
    font-size: 16px;
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.navbar-nav .nav-link i {
    margin-right: 10px;
}

.navbar-nav .nav-link:hover {
    background-color: #34495e;
}

.navbar-nav .nav-item.active .nav-link {
    background-color: #3498db;
    color: #fff;
}

.horizontal.dark {
    border-top: 1px solid #ecf0f1;
    margin-top: 10px;
    margin-bottom: 10px;
}

/* Responsive styles */
@media (max-width: 768px) {
    .sidenav {
        width: 100%;
        height: auto;
    }
}