html, body {
    padding: 0; margin: 0; height: 100%; overflow: hidden;
}

#vtour {
    position: absolute;
    left: 0; top: 0; width: 100%; height: 100%;
    overflow: hidden;
}

#pano {
    z-index: 0; width: 100%; height: 100%;
}

#ui_stage {
    position: absolute;
    left: 0; top: 0; width: 100%; height: 100%;
    user-select: none;
    -webkit-user-select: none;
    pointer-events: none;
    overflow: hidden;
}

#ui_stage #ui_area_lt {
    position: absolute;
    left: 0px; top: 0px; width: 100%;
    pointer-events: all;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 10000;
}

#ui_stage #ui_area_rb {
    position: absolute;
    right: 0px; bottom: 0px; width: 100%;
    pointer-events: all;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 10000;
}

#ui_stage #ui_area_rt {
    position: absolute;
    right: 0px; top: 0px; width: 10px;
    pointer-events: all;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 10000;
}

#ui_stage #ui_area_panel {
    position: absolute;
    left: -280px; top: 0px; width: 280px; height: 100%;
    pointer-events: all;
    transition: left 0.3s;
    z-index: 10001;
}

#ui_stage #ui_area_panel::after {
    content: '';
    position: absolute;
    left: 0; top: 0px; width: 100%; height: 100%;
    z-index: -1;
    background-image: url(../skin/images/side_menu_bg.png);
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.5;
}

#ui_stage #ui_area_panel::before {
    content: '';
    position: absolute;
    left: 40px; top: 30px; right: 40px; height: 80px;
    z-index: 0;
    background-image: url(../skin/images/logo_white.png);
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

#ui_stage #ui_area_panel.open {
    left: 0px; 
}

#ui_stage #ui_area_panel #btn_open {
    position: absolute;
    left: 100%; top: 0; width: 50px; height: 70px;
    pointer-events: all;
    cursor: pointer;
    z-index: 1000;
    /* background-color: rgb(37, 41, 40); */
}

#ui_stage #ui_area_panel #btn_open::after {
    content: '☰';
    position: absolute;
    left: 0; top: 0; width: 100%; height: 100%; line-height: 90px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 44px; text-align: center;
    color: #ffffff;
    pointer-events: none;
    transition: color 0.3s;
}

@media (pointer: fine) {
    #ui_stage #ui_area_panel #btn_open:hover::after {
        color: white;
    }
}

#ui_stage #ui_area_panel #list_menu {
    position: absolute;
    left: 0px; top: 130px; right: 0px; bottom: 60px;
    z-index: 10000;
}

#ui_stage #ui_area_panel #ui_area_panel_btns {
    position: absolute; 
    left: 30px; bottom: 10px; right: 30px; height: 45px;
    padding-top: 5px;
    transition: left 0.3s;
    pointer-events: all;
    box-sizing: border-box;
    border-top: 1px solid rgba(255, 255, 255,0.4);
    display: flex;
    justify-content: space-between;
    z-index: 10001;
}

#ui_area_panel_btns #ui_area_panel_btns_hint {
    position: absolute; 
    left: 0; bottom: 55px; transform: translateX(-50%);
    background-color: rgba(0,0,0,0.7);
    border-radius: 4px;
    transition: opacity 0.2s, left 0.3s;
    padding: 10px 15px; z-index: 500;
    font-family: Arial, Helvetica, sans-serif; font-size: 13px; color: #ffffff;
    opacity: 0;
    white-space: nowrap;
    pointer-events: none;
}

#ui_area_panel_btns #ui_area_panel_btns_hint::before {
    content: ' ';
    position: absolute;
    left: 50%; top: 100%; transform: translateX(-50%);
    width: 0; height: 0;
    border: 0 solid transparent;
    border-left-width: 6px;
    border-right-width: 6px;
    border-top: 8px solid rgba(0,0,0,0.7);
}

#ui_area_panel_btns #ui_area_panel_btns_hint.visible {
    opacity: 1;
}


#logo {
    position: absolute;
    right: 10px; top: 10px; width: 50px; height: auto;
    cursor: pointer;
}

#ui_stage #ui_prevnext_stage {
    position: absolute;
    right: 110px; bottom: 10px; width: 90px; height: 40px;
    z-index: 100;
}

.btn {
    position: absolute; cursor: pointer;
    width: 40px; height: 40px; border-radius: 20px; 
}

.btn.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.btn svg .bg {
    fill: #ffffff;
    opacity: 1;
    transition: fill 0.3s;
}

.btn svg .ring {
    fill: #ffffff;
    opacity: 1;
    transition: fill 0.3s;
}

.btn svg .icon {
    fill: #000000;
    opacity: 1;
    transition: fill 0.3s, opacity 0.3s;
}

.btn svg .icon2 {
    fill: #000000;
    opacity: 0.8;
}

.btn svg .menu {
    fill: #ffffff;
    opacity: 0.8;
    transition: fill 0.3s, opacity 0.3s;
}

.btn svg .menu2 {
    fill: #000000;
    opacity: 0.8;
}

@media (pointer: fine) {
    .btn:hover svg .bg {
        fill: #000000;
        opacity: 0.6;
    }

    .btn:hover svg .icon {
        fill: #ffffff;
        opacity: 1;
    }

    .btn:hover svg .icon2 {
        fill: #ffffff;
        opacity: 1;
    }
    .btn:hover svg .menu {
        fill: #000000;
        opacity: 1;
    }
}

.btn.prev { left: 0; top: 50%; transform: translateY(-50%); }

.btn.next { right: 0; top: 50%; transform: translateY(-50%); }

.btn.info { right: 10px; bottom: 10px }

.btn.audio  { right: 60px; bottom: 10px }

.btn.audio svg path  {
    transition: opacity 0.3s;
}

.btn.audio svg .on  {
    opacity: 0;
}

.btn.audio.enabled svg .on  {
    opacity: 1;
}

.btn.audio.enabled svg .off  {
    opacity: 0;
}

.btn.slide_menu_btn {
    position: relative;
    display: inline-block;
}

.btn.slide_menu_btn svg {
    pointer-events: none;
}

.btn.autorotate svg .on  {
    opacity: 0;
}

.btn.autorotate.enabled svg .on  {
    opacity: 1;
    fill: #ffffff;
}

@media (pointer: fine) {
    .btn.autorotate.enabled:hover svg .on  {
        opacity: 1;
        fill: #000000;
    }
}

.btn.autorotate.enabled svg .off  {
    opacity: 0;
}

.btn.fullscreen svg .on  {
    opacity: 0;
}

.btn.fullscreen.enabled svg .on  {
    opacity: 1;
    fill: #ffffff;
}

@media (pointer: fine) {
    .btn.fullscreen.enabled:hover svg .on  {
        opacity: 1;
        fill: #000000;
    }
}

.btn.fullscreen.enabled svg .off  {
    opacity: 0;
}


/* #ui_group_title_m is mobile */

#ui_group_title_m  {
    position: absolute;
    left: 12px; top: 12px; right: 80px; 
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px; font-weight: bold;
    color: #FFFFFF;
    display: none;
}

#ui_area_rb #ui_group_title  {
    position: absolute;
    right: 210px; bottom: 38px; width: auto; line-height: 20px; height: 20px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px; font-weight: bold;
    color: #FFFFFF;
}

#ui_area_rb #ui_counter_stage  {
    position: absolute;
    right: 210px; bottom: 10px; width: auto; line-height: 26px; height: 26px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    color: #FFFFFF;
}

#ui_area_rb #ui_dots_stage  {
    position: absolute;
    right: 210px; bottom: 10px; width: auto; height: 26px;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

#ui_area_rb #ui_counter_stage.hidden,
#ui_area_rb #ui_dots_stage.hidden  {
    opacity: 0;
    pointer-events: none;
}


#ui_dots_stage .dot {
    display: flex;
    cursor: pointer;
}

#ui_dots_stage .dot svg {
    pointer-events: none;
}

#ui_dots_stage .dot .dot_stroke {
    fill: #ffffffa2;
}

#ui_dots_stage .dot .dot_hover {
    transition: fill-opacity 0.3s, transform 0.2s;
    fill: #ffffff;
    fill-opacity: 0;
    transform-origin: center;
    transform: scale(0);
}

#ui_dots_stage .dot.active .dot_hover {
    fill-opacity: 1;
    transform: scale(1);
}

@media (pointer: fine) {
    #ui_dots_stage .dot:hover .dot_hover {
        fill-opacity: 1;
        transform: scale(1);
    }
}

#ui_dots_stage .dot .dot_check {
    transition: fill 0.3s, transform 0.2s;
    fill: #ffffff; stroke: #333333;
    transform-origin: center;
    transform: scale(0);
}

#ui_dots_stage .dot.visited .dot_check {
    transform: scale(1);
}

#ui_dots_stage .dot.active .dot_check {
    fill: #000000; stroke: #ffffff;
}

@media (pointer: fine) {
    #ui_dots_stage .dot:hover .dot_check {
        fill: #000000; stroke: #ffffff;
    }
}

@media (max-width: 500px) {

    #ui_area_rt {
        display: none;
    }

    #ui_area_rb #ui_dots_stage {
        right: 10px; bottom: 100px; height: calc(100vh - 170px);
        flex-direction: column;
        justify-content: flex-end;
    }

    #ui_area_rb #ui_group_title  {
        display: none;
    } 

    #ui_group_title_m  {
        display: block;
    } 
}







#ui_stage #ui_description_stage {
    position: absolute;
    display: flex; flex-direction: column;
    right: 10px; bottom: 60px; width: 40vw; min-width: 250px; max-width: 500px; max-height: 30vh;
    background-color: rgba(0,0,0,0.0);
    border-radius: 5px;
    transition: background-color 0.3s, padding 0.3s;
    padding: 0; box-sizing: border-box;
}

#ui_stage #ui_description_stage .scrollarea > .scrollarea-track-v,
#ui_stage #ui_description_stage .scrollarea > .scrollarea-track-h {
    background: rgba(255,255,255,0.2);
}

#ui_stage #ui_description_stage .scrollarea > .scrollarea-track-v > .scrollarea-bar-v,
#ui_stage #ui_description_stage .scrollarea > .scrollarea-track-h > .scrollarea-bar-h {
    background: rgba(255,255,255,1);
}

@media (max-width: 500px) {
    #ui_stage #ui_description_stage {
        width: calc(100vw - 20px); min-width: auto; max-width: auto;
    }    
}

#ui_stage #ui_description_stage::before {
    content: ' ';
    position: absolute;
    right: 14px; top: 100%;
    width: 0; height: 0;
    border: 0 solid transparent;
    border-left-width: 6px;
    border-right-width: 6px;
    border-top: 8px solid rgba(255, 255, 255, 0.8); /* triangle */
    transform-origin: top;
    transform: scale(0);
    transition: opacity 0.3s, transform 0.3s;
}

#ui_stage #ui_description_stage.open {
    background-color: rgba(255, 255, 255, 0.8);  /*background colour*/
    padding: 10px 0px 12px 15px;
}
#ui_stage #ui_description_stage.open::before {
    opacity: 1;
    transform: scale(1);

}

#ui_stage #ui_description_stage #ui_description_title {
    position: relative;
    width: 100%; transition: width 0.5s, color 0.3s;
    font-family: Arial, Helvetica, sans-serif; font-size: 24px; color: #ffffff;
    text-align: right;
    white-space: nowrap;
}
#ui_stage #ui_description_stage.open #ui_description_title {
    width: 0; color: #000000;
}

#ui_stage #ui_description_stage #ui_description_text {
    position: relative;
    height: 0px; margin-top: 0;
    transition: height 0.4s, margin-top 0.4s;
}

#ui_stage #ui_description_stage.open #ui_description_text {
    margin-top: 10px;
}

#ui_stage #ui_description_stage.open #ui_description_text > div:first-child {
    overflow: auto; max-height: 100%;
}

#ui_stage #ui_description_stage.open #ui_description_text > div:first-child > div {
    font-family: Arial, Helvetica, sans-serif; font-size: 16px; color: #000000;
    padding: 0 10px 0 0;
}

#ui_stage #ui_description_stage.open #ui_description_text > div:first-child > div p:first-child {
    margin-top: 0;
}

#ui_stage #ui_description_stage.open #ui_description_text > div:first-child > div p:last-child {
    margin-bottom: 0;
}

/* AUDIO */

#ui_stage #ui_description_stage #ui_audio_timeline {
    position: absolute;
    left: 0; top: 0; width: 100%; height: 5px;
    border-radius: 5px 5px 0 0;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.3s;
}

#ui_stage #ui_description_stage.open #ui_audio_timeline.visible {
    opacity: 1;
}

#ui_stage #ui_audio_timeline > div {
    position: absolute;
    left: 0; top: 0; width: 0%; height: 5px;
    background: rgb(0, 0, 0);
    /* background: linear-gradient(180deg, rgba(31,100,208,1) 0%, rgba(255, 255, 255, 0) 100%); */
    transition: width 0.3s;
}





#ui_stage #ui_dot_title {
    position: absolute; 
    left: 0; bottom: 55px; transform: translateX(-50%);
    background-color: rgba(0,0,0,0.7);
    border-radius: 4px;
    transition: opacity 0.2s, left 0.3s;
    padding: 10px 15px; z-index: 500;
    font-family: Arial, Helvetica, sans-serif; font-size: 13px; color: #ffffff;
    opacity: 0;
    pointer-events: none;
}

#ui_stage #ui_dot_title::before {
    content: ' ';
    position: absolute;
    left: 50%; top: 100%; transform: translateX(-50%);
    width: 0; height: 0;
    border: 0 solid transparent;
    border-left-width: 6px;
    border-right-width: 6px;
    border-top: 8px solid rgba(0,0,0,0.7);
}

#ui_stage #ui_dot_title.visible {
    opacity: 1;
}


#ui_stage #ui_logo_hint {
    position: absolute; 
    right: 10px; top: 55px; 
    background-color: rgba(0,0,0,0.7);
    border-radius: 4px;
    transition: opacity 0.2s, left 0.3s;
    padding: 10px 15px; z-index: 500;
    font-family: Arial, Helvetica, sans-serif; font-size: 13px; color: #ffffff;white-space: nowrap;
    opacity: 0;
    pointer-events: none;
}

#ui_stage #ui_logo_hint::before {
    content: ' ';
    position: absolute;
    right: 20px; bottom: 100%;
    width: 0; height: 0;
    border: 0 solid transparent;
    border-left-width: 6px;
    border-right-width: 6px;
    border-bottom: 8px solid rgba(0,0,0,0.7);
}

@media (pointer: fine) {
    #logo:hover ~ #ui_logo_hint {
        opacity: 1;
    }
}

.btn.guide_enter::before,
.btn.guide_exit::before {
    display: block; 
    position: absolute;
    right: 50px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px; color: #FFFFFF; white-space: nowrap;
    text-shadow: 0 0 3px rgba(0,0,0,0.9);
    height: 40px; line-height: 40px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}

@media (pointer: fine) {
    .btn.guide_enter:hover:before,
    .btn.guide_exit:hover:before {
        opacity: 1;
    }
}

.btn.guide_enter::before {
    content: "Enter guided tour";
}

.btn.guide_exit::before {
    content: "Exit guided tour";
}
/* side triangle 
#ui_area_rt #ui_logo_hint {
    position: absolute; 
    right: 72px; top: 10px; 
    background-color: rgba(0,0,0,0.7);
    border-radius: 4px;
    transition: opacity 0.2s, left 0.3s;
    padding: 10px 15px; z-index: 500;
    font-family: Arial, Helvetica, sans-serif; font-size: 13px; color: #ffffff;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
}

#ui_area_rt #ui_logo_hint::before {
    content: ' ';
    position: absolute;
    left: 100%;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 7px 0 7px 8px;
    border-color: transparent transparent transparent rgba(0,0,0,0.7);
*/























.slide_menu {
    background-color: rgba(0,0,0,0.0);
}

.slide_menu .stage > div:first-child {
    padding: 0 14px;
}

.slide_menu .stage > div:first-child > .item {
    margin-bottom: 2px;
}

.slide_menu .stage > div:first-child > .item > .title {
    padding: 6px 0 6px 10px;
    background-color: rgba(0,0,50,0.0);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    color: #fff;
}

@media (pointer: fine) {
    .slide_menu .stage > div:first-child > .item > .title:hover {
        background-color:rgba(255, 255, 255, 0.5);
        color: black;
    }
}

.slide_menu .stage > div:first-child > .item.active > .title {
    background-color:rgba(255, 255, 255, 0.5);
    color: black;
}

@media (pointer: fine) {
    .slide_menu .stage > div:first-child > .item.active > .title:hover {
        background-color:rgba(255, 255, 255, 0.5);
        color: black;
    }
}

.slide_menu .stage > div:first-child > .item.group > .title {
    padding: 6px 0 6px 10px;
    background-color:rgba(255, 255, 255, 0.0);
    font-weight: normal;
    color: white;
}

@media (pointer: fine) {
    .slide_menu .stage > div:first-child > .item.group > .title:hover {
        background-color:rgba(255, 255, 255, 0.5);
        color: black;
    }
}

.slide_menu .stage > div:first-child > .item.group.active > .title {
    background-color:rgba(255, 255, 255, 0.5);
    color: black;
}

@media (pointer: fine) {
    .slide_menu .stage > div:first-child > .item.group.active > .title:hover {
        background-color:rgba(255, 255, 255, 0.5);
        color: black;
    }
}

.slide_menu .stage > div:first-child > .item.group > .title:after {
    /* content: url(../images/arrow_white.svg); */
    right: 10px;
}

.slide_menu .stage > div:first-child > .item.group > .title:hover:after,
.slide_menu .stage > div:first-child > .item.group.active > .title:after {
    /* content: url(../images/arrow_black.svg); */
}

.slide_menu .stage > div:first-child > .item.back > .title {
    padding-left: 36px;
    color: orange;
}

@media (pointer: fine) {
    .slide_menu .stage > div:first-child > .item.back > .title:hover {
        background-color: rgba(50,0,0,0.9);
        color: orange;
    }
}

.slide_menu .stage > div:first-child > .item.back > .title:after {
    /* content: url(../images/arrow_white.svg); */
}

@media (pointer: fine) {
    .slide_menu .stage > div:first-child > .item.back:hover > .title:after {
        /* content: url(../images/arrow_black.svg); */
    }
}

.slide_menu .stage.scrollarea > .scrollarea-track-v,
.slide_menu .stage.scrollarea > .scrollarea-track-h {
    background-color: rgba(255,255,255,0.4);
}
.slide_menu .stage.scrollarea > .scrollarea-track-v > .scrollarea-bar-v,
.slide_menu .stage.scrollarea > .scrollarea-track-h > .scrollarea-bar-h {
    background-color: rgba(255,255,255,0.6);
}

.caption_item {
    box-sizing: border-box;
    pointer-events: none;
    border: 1px solid rgba(255, 255, 255,0.6);
}
.itemcolor_aerial {
    background-color: rgb(74, 79, 84,0.6);
}

.itemcolor_campus {
    background-color: rgb(153, 0, 51,0.6);
}

.itemcolor_hostel {
    background-color: rgb(253, 186, 17,0.6);
}

.itemcolor_sports {
    background-color: rgb(31, 171, 221,0.6);
}

.itemcolor_chinese {
    background-color: rgb(173, 217, 101,0.6);
}


/* top buttons - logo just for buttons - will be removed in a few months and I wanted to make it easy to remove it all*/


#ui_colorbtn_stage {
    position: absolute;
    right: 80px; top: 19px;
    display: flex;
    flex-direction: row;
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: all;
} 

.color_btn {
    display: block;
    text-decoration: none;
    padding: 14px 20px;
    margin: 5px;
    border-radius: 5px;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 16px;
    white-space: nowrap;
    transition: filter 0.5s;
}

.color_btn.apply {
    background-color: rgba(153, 0, 51, 1);
    color: rgba(255,255,255,1);
}

.color_btn.open {
    background-color: rgba(253,186,17,1);
    color: rgba(255,255,255,1);
}


@media (pointer: fine) {
    .color_btn:hover {
        filter: brightness(1.2);
    }
}


@media (max-width: 500px) {
    #ui_area_panel {
        width: 100%!important;
    }

    #ui_stage #ui_area_panel {
        left: 100%; 
    }

    #ui_stage #ui_area_panel #btn_open {
        left: auto; right: 100%; 
    }

    #ui_stage #ui_area_panel.open #btn_open {
        left: auto; right: 0; 
    }

    .slide_menu .stage > div:first-child > .item > .title {
        /* text-align: center; */
    }

    #ui_colorbtn_stage {
        /* Color Buttons Hidden on mobile */
        /* display: none; */
        top: 35px; left: 10px; right: auto;
        flex-direction: column;
    }

    .color_btn.open {
        margin: 0;
    }

    .color_btn.apply {
        display: none;
    }    

    #vtour.menu_open .color_btn.open {
        display: none;
    }
}