/* Icons from https://feathericons.com/ */

body {
    font-size: 1.1em;
    background: snow;
}

a,
a:hover,
a:focus {
    color: inherit;
    transition: all 0.3s;
}

.navbar {
    background: #e6f0eb;
    border: none;
    border-radius: 0;
    margin-bottom: 0.5em;
    box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar-btn {
    box-shadow: none;
    outline: none !important;
    border: none;
}

.wrapper {
    display: flex;
    width: 100%;
}

#sidebar {
    width: 250px;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 999;
    background: #e6f0eb;
    color: darkslategray;
    transition: all 0.3s;
}

#sidebar.active {
    margin-left: -250px;
}

#sidebar ul.components {
    padding: 20px 0;
    border-bottom: 1px solid #b6d3c5;
}

#sidebar ul p {
    color: darkslategray;
    padding: 10px;
}

#sidebar ul li a {
    padding: 10px;
    font-size: 1.1em;
    display: block;
}

#sidebar ul li a:hover {
    color: darkslategray;
    background: #b6d3c5;
}

#sidebar ul li.active > a,
a[aria-expanded="true"] {
    color: darkslategray;
    background: #b6d3c5;
}

a[data-toggle="collapse"] {
    position: relative;
}

.dropdown-toggle::after {
    display: block;
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}

ul ul a {
    font-size: 0.90em !important;
    padding-left: 10px !important;
}

#content {
    width: calc(100% - 250px);
    padding: 40px;
    min-height: 100vh;
    transition: all 0.3s;
    position: absolute;
    top: 0;
    right: 0;
}

#content.active {
    width: 100%;
}

@media (max-width: 990px) {
    #sidebar {
        margin-left: -250px;
    }

    #sidebar.active {
        margin-left: 0;
    }

    #content {
        width: 100%;
    }

    #content.active {
        width: calc(100% - 250px);
    }

    #sidebarCollapse span {
        display: none;
    }
}

#sidebarCollapse {
    background: #b6d3c5;
    border-color: #e6f0eb;
    color: darkslategray;
}

header {
    margin-bottom: 1em;
}

.lecture-name {
    font-style: italic;
    padding: 1em;
}

.lecture-title {
    text-align: center;
}

.lecture-author {
    text-align: center;
    font-style: italic;
}

section, article {
    text-align: justify;
    color: black;
    margin-bottom: 2em;
}

#content a {
    text-decoration: underline;
}

.nav-item .active {
    background: #b6d3c5;
}

.nav-link {
    text-align: center;
    margin: 5px;
    border-radius: 5px;
    border: 1px solid #b6d3c5;
}

.scrollup {
    width: 64px;
    height: 64px;
    text-decoration: none;
    background: url('../images/up.png') no-repeat 0 0;
    position: fixed;
    right: 50px;
    bottom: 50px;
    display: none;
    opacity: 0.6;
}

.exercise {
    padding: 1em;
    margin: 1em;
    background: #e6f0eb;
    border-radius: 1em;
    border: 1px solid #b6d3c5;
}

.questions {
    font-style: italic;
    border-radius: 1em;
    border: 1px solid #b6d3c5;
    padding: 1em;
    margin: 1em;
}

.imagebox {
    padding: 1em;
    margin: 1em;
    border-radius: 1em;
    border: 1px solid #b6d3c5;
    background: white;
}

.imagebox p {
    text-align: left;
    margin-top: 2rem;
}

.col-answer {
    border: black 1px solid;
}

.img-icon {
    width: 1.5em;
    height: 1.5em;
}

.font-controls {
    background: white;
    margin: 0.5em;
    border-radius: 0.5em;
    border: 1px solid #b6d3c5;
}

.btn-nav {
    border-radius: 0.5em;
    background: #e6f0eb;
    border: 1px solid #b6d3c5;
    margin: 1em;
}

.lecturebox {
    padding: 1em;
    margin: 1em;
    border-radius: 1em;
    border: 1px solid #b6d3c5;
}

.lecturebox:hover {
    transition: all 0.3s;
    background: #e6f0eb;
}

.figure-caption {
    color: inherit;
    margin-bottom: 1rem;
}

.img-left {
    text-align: right;
    margin-right: 1.1em;
}

.img-right {
    text-align: left;
    margin-left: 1.1em;
}

.subcomponents {
    margin-left: 10px;
}

.lastcomponents {
    margin-left: 25px;
    font-size: 0.9em;
}

.sidecaption {
    margin-right: 1em;
}