:root {
    --sidebar-width: 480px;
    --sidebar-width-collapsed: 80px;
}

body {
    overflow-x: hidden;
}

.sidebar {
    width: var(--sidebar-width);
    height: fit-content;
    background: linear-gradient(135deg, #1a1c2e 0%, #16181f 100%);
    transition: all 0.3s ease;
    position:  absolute !important;
}

.sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}

.sidebar-link {
    color: #a0a3bd;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin: 4px 16px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.sidebar-link.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.logo-text {
    background: linear-gradient(45deg, #6b8cff, #8b9fff);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: opacity 0.3s ease;
}

.notification-badge {
    background: #ff6b6b;
    padding: 2px 6px;
    border-radius: 6px;
    font-size: 0.7rem;
}

.profile-section {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.main-content {
    margin-left: var(--sidebar-width);
    background-color: #f8f9fa;    
    min-height: 100vh;
    max-height: 100vh;
    height: max-content;
    width: 100%;
    padding: 10px 0px 10px 10px;
    transition: all 0.3s ease;
}

.collapsed~.main-content {
    margin-left: var(--sidebar-width-collapsed);
}
.chapterConentSlide{
    height: 750px;
}
i.customIcon{
    display: inline-block !important;
    width: 30px;
    height: 30px;
    background-repeat: no-repeat;
    background-size: cover;    
    background-position: center;
}
.iconLightBG{
    background-color: white;
}
.tripod{
    background-image: url('../img/ModuleImgs/LandSurvey_Management/tripod.png');
}
.bookMagnify{
    background-image: url('../img/ModuleImgs/Basics_GIS/book.png');    
}.bookMagnifyLight{
    background-image: url('../img/ModuleImgs/Basics_GIS/bookLight.png');
}.buildingBlocks{
    background-image: url('../img/ModuleImgs/Basics_GIS/buildingBlocks.png');
}.buildingBlocksLight{
    background-image: url('../img/ModuleImgs/Basics_GIS/buildingBlocksLight.png');
}.sysProcessLight{
    background-image: url('../img/ModuleImgs/Basics_GIS/systemProcessLight.png');
}.superHeroLight{
    background-image: url('../img/ModuleImgs/Basics_GIS/superheroLight.png');
}.diyLight{
    background-image: url('../img/ModuleImgs/Basics_GIS/DIYLight.png');
}.geoRefGCP{
    background-image: url('../img/ModuleImgs/Geo_ref/GCP_Icon.png');
}.geoRefImg2Img{
    background-image: url('../img/ModuleImgs/Geo_ref/image_to_image.png');
}
@media screen and (min-width:501px) and (max-width:999px) {
    /* Tablet styles */
    .chapterConentSlide{
        height: 450px;
    }
}
/* iPads (portrait and landscape) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) {
/* Styles */
.chapterConentSlide{
    height: 550px;
}
}

/* iPads (landscape) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) {
/* Styles */
.chapterConentSlide{
    height: 550px;
}
}

/* iPads (portrait) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) {
/* Styles */
.chapterConentSlide{
    height: 750px;
}
}

.toggle-btn {
    position: absolute;
    right: -15px;
    top: 20px;
    background: white;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    z-index: 100;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.collapsed .toggle-btn {
    transform: rotate(180deg);
    transition-duration: 550ms;
}

.collapsed .hide-on-collapse {
    opacity: 0;
    visibility: hidden;
}

.collapsed .logo-text {
    opacity: 0;
}

.collapsed .profile-info {
    opacity: 0;
}

.collapsed .sidebar-link {
    text-align: left;
    padding: 1rem !important;
    margin: 4px 8px;
}

.collapsed .sidebar-link i {
    margin: 0 !important;
}

.profile-info {
    transition: opacity 0.2s ease;
}

.subChaptersNavList{
    width: 100%;
    display: block;
    height: auto;
    padding: 0;
    border: solid 1px #ff0000;
    background-color: var(--purpleLight);
    -webkit-box-shadow: -1px 6px 20px -7px rgba(247,242,247,1);;
    -moz-box-shadow: -1px 6px 20px -7px rgba(247,242,247,1);;
    box-shadow: -1px 6px 20px -7px rgba(247,242,247,1);;
}
.subChaptersNavList ul{    
    padding: 0px 0px 0px 50px;
}

.subChaptersNavList ul > li{
    display: block;
    width: 95%;
    padding: 0;
    height: 70px;
    padding: 25px 0px 10px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
}
.subChaptersNavList ul > li:hover {
    color: #ffffff;
    background: rgba(106, 75, 156, 0.4);
    transform: translateX(5px);
}
.subChaptersNavList ul > li.active {
    color: #ffffff;
    background: rgba(106, 75, 156, 0.4);
}
.chapterContentArticle p{
    text-align: justify;    
}
.carousel-item{
    height: 560px;
    overflow-x: hidden;
    overflow-y: auto;
}
ul.courseContentTopicListGroup{
    padding: 10px;
}
ul.courseContentTopicListGroup > li.list-group-item{
    cursor: pointer;
}
ul.courseContentTopicListGroup > li.list-group-item:hover{
    text-decoration: underline;
    color:var(--indigo);
    padding-left: 25px;
}
ul.courseContentTopicListGroup > li.list-group-item.active{
    text-decoration: underline;
    color:var(--light);
    padding-left: 25px;
}

.chapter-content{
    display: none;
}
.activeChapter{
    display: block;
}