:root {
    --klar-progress-bar-color: #D9534F;
    --klar-lesson-header-bg: #f8f9fa;
    --klar-main-navbar-height: 60px;
}

body {
    font-family: var(--source-sans-pro);
    font-weight: 400;
    line-height: 1.7;
    background-color: var(--klar-main-bg);
    color: var(--klar-body-text-color);
    font-size: var(--base-font-size);

}

/* Custom styles for the sidebar */
#sidebarMenu.sidebar {
    background-color: #f8f9fa;
    border-right: 1px solid #dee2e6;
    z-index: 1050;
    transition: width 0.35s ease-in-out;
}


#sidebarMenu.collapsing,
#sidebarMenu.collapse:not(.show) {
    overflow: hidden;
}

#sidebarMenu .logo-container,
#sidebarMenu .nav-menu,
#sidebarMenu .sidebar-footer {
    min-width: 250px;
}

/* Toggle button styling */
#sidebarToggle {
    position: fixed;
    top: 30px;
    left: 15px;
    z-index: 1051;

    .lesson-banner {
        max-height: 280px;
        overflow: hidden;
        position: relative;
    }

    .lesson-banner img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }