body {
    background-color: #f8f9fa;
}

.navbar {
    background-color: rgb(177, 172, 172);
    border-bottom: 1px solid #b8bdc1cd;
}

.navbar-brand {
    font-size: 1.4rem;
    letter-spacing: 0.5px;
}

.navbar-nav .nav-link {
    color: #333 !important;
    font-weight: 500;
    margin-left: 10px;
    margin-right: 10px;
    transition: color 0.2s ease, transform 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: #0d6efd !important;
    transform: translateY(-1px);
}

.dropdown-menu {
    min-width: 220px;
}

.dropdown-item {
    padding-top: 10px;
    padding-bottom: 10px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.dropdown-item:hover {
    background-color: #f1f3f5;
    color: #0d6efd;
}

.filter-sidebar {
    position: fixed;
    top: 90px;
    left: 0;
    width: 260px;
    height: calc(100vh - 90px);
    overflow-y: auto;
    padding: 20px;
    background-color: #f8f9fa;
    border-right: 1px solid #ddd;
    z-index: 1000;
}

.main-content {
    margin-left: 280px;
}

@media screen and (max-width: 768px) {
    .filter-sidebar {
        position: static;
        width: 100%;
        height: auto;
    }

    .main-content {
        margin-left: 0;
    }
}