* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 85px;
}

body{
    background-color: #2c2c2c;
    padding-top: 10vh;
    font-family: 'Nunito';
    font-weight: normal;
    font-size: 14px;
    bottom: 0;
    overflow-x: hidden;
}

.loader_container{
    margin-top: 1.3vh;
    z-index: 1000;
    justify-items: center;
    align-content: center;
    width: 100vw;
    height: 100vh;
    position: fixed; 
    background-color: #2c2c2c;
}

:root {
	--bg: #e3e4e8;
	--fg: #2e3138;
	--primary: #000;
	font-size: calc(16px + (24 - 16) * (100vw - 320px) / (1280 - 320));
}

.hourglass, .hourglass:before, .hourglass:after {
	animation-duration: 2s;
	animation-iteration-count: infinite;
}
.hourglass {
	--polygonH: polygon(0% 0%,100% 0%,100% 5.55%,95% 5.55%,95% 28%,60% 46%,60% 54%,95% 72%,95% 94.45%,100% 94.45%,100% 100%,0% 100%,0% 94.45%,5% 94.45%,5% 72%,40% 54%,40% 46%,5% 28%,5% 5.55%,0% 5.55%);
	animation-name: flip;
	animation-timing-function: ease-in-out;
	background-image: linear-gradient(var(--primary) 0.5em,#737a8c55 0.5em 8.5em,var(--primary) 8.5em);
	clip-path: var(--polygonH);
	-webkit-clip-path: var(--polygonH);
	overflow: hidden;
	position: relative;
	width: 5em;
	height: 9em;
	z-index: 0;
}
.hourglass:before, .hourglass:after {
	animation-timing-function: linear;
	content: "";
	display: block;
	position: absolute;
}
.hourglass:before {
	--polygonB1: polygon(0% 0%,100% 0%,100% 24%,50% 47%,50% 47%,50% 47%,50% 47%,50% 47%,50% 47%,50% 47%,50% 47%,0% 24%);
	--polygonB2: polygon(0% 4%,100% 4%,100% 24%,55% 45%,55% 100%,55% 100%,55% 100%,45% 100%,45% 100%,45% 100%,45% 45%,0% 24%);
	--polygonB3: polygon(0% 24%,100% 24%,100% 24%,55% 45%,55% 80%,100% 100%,100% 100%,0% 100%,0% 100%,45% 80%,45% 45%,0% 24%);
	--polygonB4: polygon(45% 45%,55% 45%,55% 45%,55% 45%,55% 58%,100% 76%,100% 100%,0% 100%,0% 76%,45% 58%,45% 45%,45% 45%);
	--polygonB5: polygon(50% 53%,50% 53%,50% 53%,50% 53%,50% 53%,100% 76%,100% 100%,0% 100%,0% 76%,50% 53%,50% 53%,50% 53%);
	animation-name: fill;
	background-color: #b59767;
	background-size: 100% 3.6em;
	clip-path: var(--polygonB1);
	-webkit-clip-path: var(--polygonB1);
	top: 0.5em;
	left: 0.5em;
	width: 4em;
	height: 8em;
	z-index: 1;
}
.hourglass:after {
	animation-name: glare;
	background:
		linear-gradient(90deg,#0000 0.5em,#0003 0.5em 1.5em,#0000 1.5em 3.5em,#fff3 3.5em 4.5em,#fff0 4.5em 6.5em,#0003 6.5em 7.5em,#0000 7.5em) 0 0 / 100% 0.5em,
		linear-gradient(90deg,#0000 0.75em,#0003 0.75em 1.25em,#0000 1.25em 3.75em,#fff3 3.75em 4.25em,#fff0 4.25em 6.75em,#0003 6.75em 7.25em,#0000 7.25em) 0 0.5em / 100% 8em,
		linear-gradient(90deg,#0000 0.5em,#0003 0.5em 1.5em,#0000 1.5em 3.5em,#fff3 3.5em 4.5em,#fff0 4.5em 6.5em,#0003 6.5em 7.5em,#0000 7.5em) 0 100% / 100% 0.5em;
	background-repeat: repeat-x;
	top: 0;
	left: -3em;
	width: 200%;
	height: 100%;
	z-index: 2;
}
/* Animations */
@keyframes fill {
	from {
		clip-path: var(--polygonB1);
		-webkit-clip-path: var(--polygonB1);
	}
	10% {
		clip-path: var(--polygonB2);
		-webkit-clip-path: var(--polygonB2);
	}
	45% {
		clip-path: var(--polygonB3);
		-webkit-clip-path: var(--polygonB3);
	}
	80% {
		clip-path: var(--polygonB4);
		-webkit-clip-path: var(--polygonB4);
	}
	85%, to {
		clip-path: var(--polygonB5);
		-webkit-clip-path: var(--polygonB5);
	}
}
@keyframes glare {
	from, 90% {
		transform: translateX(0);
	}
	to {
		transform: translateX(3em);
	}
}
@keyframes flip {
	from, 90% {
		transform: rotate(0);
	}
	to {
		transform: rotate(180deg);
	}
}

.home {
    text-align: center;
    margin-top: 20px;
    transition: opacity 0.5s ease;
}

*::-webkit-scrollbar {
    width: 12px; 
}
  
 *::-webkit-scrollbar-track {
    background-color: #fff4e3; 
}
  
*::-webkit-scrollbar-thumb {
    background-color: #cab087;
    border-radius: 2px; 
}

*::-webkit-scrollbar-thumb:hover {
    background-color: #b59767; 
}

::selection {
    color: #fffdfa;
    background: #ffc054;
}

.content_bg{
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    max-height: 100vh;
}

.navbar{
    font-size: small;
    background-color: #222222;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    padding: 1vh 1.5vh;
    position: fixed;
    width: 100vw;
    top: 0;
    left: 0;
    margin: 0;
    z-index: 50;
    transition: transform 0.3s ease-in-out;
}

.navbar a {
    color: #cab087;
    text-decoration: none;
}

.navbar a:hover{
    color: #ffc054;
}

.navbar i{
    font-size: 5vh;
    margin: 0 2vw;
}

.nav_links{
    display: flex; 
    align-items: center;
}

.nav_links a{
    display: block;
    margin: 1.5vh 1vh;
    padding: 0.9vw 0.2vw;
    background-color: #2c2c2c;
    color: #fff4e3;
    text-decoration: none;
    border-radius: 1.5vh;
    width: 12vw;
    text-align: center;
    transition: background-color 0.2s;
    box-shadow: 1px 1px 5px rgb(0, 0, 0);
}

.nav_links a:hover{
    color: #ffc054;
}

.menu-toggle {
    display: none; 
    cursor: pointer;
    margin-right: 1rem;
    font-size: 2rem;
    background: none;  
    border: none;  
    box-shadow: none;
    color: #cab087;
}

.dropdowns{
    position: relative;
}

.dropdown_contents{
    z-index: 10;
    display: block;
    width: max-content;
    position: absolute;
    top: 100%;
    left: 0;
    border-radius: 1vw;
    background-color: #2c2c2c;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.3); 
    opacity: 0;
    transform: translateY(-10px);
    transition: transform 0.3s ease-in-out;
    visibility: hidden;
}

.dropdown_contents a{
    font-size: small;
    display: block;
    text-decoration: none;
    text-align: left;
    box-shadow: none;
}

.dropdowns:hover .dropdown_contents{
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.concept-sand {
    display: flex;
    height: 100vh;
    width: 100%;
    background-image: url("images/home_img.jpeg");
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    padding-left: 15vh;
    padding-top: 10vh;
}

.word {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Indie Flower';
    font-weight: 900;
    font-size: 130px;
}

.char {
    position: relative;
    color: transparent;
    color: #222222;
    cursor: pointer;
    text-shadow: -10px 20px 10px rgba(59, 32, 0, 0.7);
}

.char::after {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.char:hover {
    transform: translateY(-20px);
    transition: transform 0.2s ease-in-out, color 0.1s ease-in-out;
}  

@keyframes move-bg {
    0% {
      background-position: 0% 0%;
    }
    50% {
      background-position: 100% 100%;
    }
    100% {
      background-position: 0% 0%;
    }
}

.home_content{
    z-index: 10;
    padding: 10vh;
    margin-top: 15vh;
    padding-top: 15vh;
    padding-bottom: -10vh;
    position: relative;
    box-shadow: 0 -20px 30px rgba(0, 0, 0, 0.3);
    background-color: #2c2c2c;
}

.heading{
    position: sticky;
    align-content: space-around;
    box-sizing: border-box;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    top: 0;
    height: 100vh;
    padding: 0;
    margin-top: -30vh;
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
}

.home_text1{
    align-items: center;
    text-align: center;
    text-shadow: none;
    padding: 3vh;
    border-radius: 2vw;
    height: 40vh;
    width: 100vw;
    font-family: 'Nunito';
    font-size: 20px;
    font-weight: 900;
    align-content: center;
    color: #fff4e3;
    padding-right: 5vw;
}

.home_text2{
    margin-top: 5vh;
    width: 100%;
    padding: 5vh;
    display: flex;
    justify-content: space-between;
    margin-bottom: 15vh;
    padding-left: 23vw; 
    font-size: 25px;
    width: 80vw; 
    text-align: center; 
    margin-top: -10vh; 
    font-weight: 500;
}

.home_text2 h2{
    padding: 5vh;
    border-radius: 2vw;
    text-shadow: none;
    font-family: 'Nunito';
    font-size: 18px;
    font-weight: 400;
    color: #fff4e3;
    align-content: center;
    text-align: center;
}

.home_text3{
    background-image: url("images/sea_bg.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    height: 100vh;
    margin: -10vh;
    padding: 0 20vh;
    font-family: 'Nunito';
    color: #222222;
    font-size: 18px;
    font-weight: 400;
    justify-content: center;
    align-items: center;
    padding-top: 20vh;
}

.home_text3 h2{
    height: fit-content;
    padding: 8vh;
    opacity: initial;
    background-color: #fff4e3;
    border-radius: 1vh;
    box-shadow: 0px 0px 15px rgba(0, 0, 0, 3);
}

.home_text4{
    background-color: #2c2c2c;
    margin: -10vh;
    padding: 20vh;
    color: #fff4e3;
    font-family: 'Nunito';
    height: fit-content;
    font-size: 25px;
}

.home_text5{
    color: #222222;
    text-align: center;
    font-family: 'Nunito';
    font-size: 20px;
    margin: 10vh -10vh;
    padding: 15vh;
    display: flex;
    height: fit-content;
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

.solution{
    text-align: center;
    color: #ffc054;
    font-family: 'Jua';
    font-size: 30px;
    text-shadow: 0px 4px 5px #000000;
}

.solution_links{
    margin: 0 5vw;
    display: flex;
    flex-wrap: wrap;
    text-align: inherit;
    justify-content: space-around;
}

.solution_links a{
    display: flex;
    display: block;
    background-color: #222222;
    padding: 10vh;
    align-items: center;
    justify-content: center;
    font-size: 25px;
    font-weight: 600;
    width: 20vw;
    border: 0.1vh solid #f0ddc0;
    border-radius: 2vh;
    color: #f0ddc0;
    text-decoration: none;
    margin: 2vw;
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 5);
    opacity: 0.8;
}

.solution_links a:hover{
    border: 0.1vh solid #ffc054;
    color: #ffc054;
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 20);
    opacity: 1;
}

header{
    font-size: 4vw;
    font-family: 'Jua';
    font-weight: 900;
    text-shadow: 0px 2px 5px #665b48;
    padding-top: 50vh;
    position: fixed;
}

.content-pages{
    z-index: 10;
    padding: 5vh;
    display: flex;
    margin-top: 20vh;
    padding-top: 15vh;
    justify-content: space-evenly;
    position: relative;
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    box-shadow: 0 -20px 30px rgba(0, 0, 0, 0.3);
}

.time_content_page{
    z-index: 10;
    padding-top: 15vh;
    position: relative;
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    height: 100vh;
    justify-items: center;
}

.timeline_attributions{
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

.subsections{
    background-color: #f0ddc0;
    position: relative;
    transition: margin-left 0.3s ease-in-out;
    position: relative;
}

.subsections h2{
    color: #222222;
    margin-bottom: 4vh;
    font-family: 'Jua';
}

.content-pages_team{
    z-index: 10;
    padding: 5vh;
    margin-top: 15vh;
    display: flex;
    position: relative;
    box-shadow: 0 -20px 30px rgba(0, 0, 0, 0.3);
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}
.ihp_contents_slide{
    z-index: 10;
    padding: 5vh;
    margin-top: 15vh;
    display: flex;
    position: relative;
    box-shadow: 0 -20px 30px rgba(0, 0, 0, 0.3);
    background-image: url("images/sand.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}

aside{
    position: sticky; 
    top: 20vh;
    margin-left: -5vw;
    height: max-content;
    min-height: 50vh;
    left: 1vw;
    padding: 2vh 2vh;
    width: max-content;
    background-color: #f0ddc0;
    transition: margin-left 0.3s ease-in-out;
    box-shadow: 2px -4px 10px rgba(0, 0, 0, 0.2);
    opacity: 0.9;
    border-radius: 1vh;
}

aside h3{
    color: #222222;
    margin-bottom: 1vh;
    font-family: 'Jua';
    font-weight: bold;
    font-size: 22px;
    width: 15vw;
}

aside ul li{
    width: 15vw;
    list-style: none;
}

aside ul li a{
    margin-left: 1vw;
    font-size: 14px;
    display: block;
    text-decoration: none;
    padding: 1vh;
    color: #222222;
}

aside ul li a:hover{
    color: #b59767;
}

.menu-toggle i {
    transition: transform 0.3s ease-in-out;
}

.nav_links.active {
    transform: translateX(0);
}

aside.active {
    transform: translateX(0);
}

.content, .content_attr{
    margin-right: -5vw;
    width: 70vw; 
    padding: 5vh;
    position: relative;
    background-color: #f0ddc0;
    transition: margin-left 0.3s ease-in-out;
    box-shadow: 2px -4px 10px rgba(0, 0, 0, 0.2);
}

.content h2, .content_attr h2{
    color: #222222;
    margin-bottom: 4vh;
    font-family: 'Jua';
    font-weight: bold;
}

p{
    margin: 1.5vh;
    padding: 2.5vh;
    background-color: #fff4e3;
    border-radius: 1.5vh;
    margin-bottom: 3vh;
}

.lists{
    margin: 1.5vh;
    padding: 2.5vh;
    background-color: #fff4e3;
    border-radius: 1.5vh;
    margin-bottom: 3vh;
    padding-left: 5vh;
}

.links:link{
    color: #fff4e3;
    text-decoration: none;
}

.links:visited{
    color: #fff4e3;
    text-decoration: none;
}

.links:hover{
    color: #ffc054;
    text-decoration: underline;
}

.ihp_contents{
    width: 100%;
    justify-content: space-around;
    justify-items: center;
}
.ihp_content{
    padding: 3vh;
    margin: 2vw;
    width: 70vw;
    position: relative;
    background-color: #f0ddc0;
    transition: margin-left 0.3s ease-in-out;
    box-shadow: 2px -4px 10px rgba(0, 0, 0, 0.2);
    justify-content: space-evenly;
    display: flex;
}

.ihp_subcontent{
    background-color: #fff4e3;
    width: 60%;
    padding: 1vw;
    border-radius: 3vh;
}

.ihp_subcontent h3{
    font-family: 'Jua';
    font-size: 24px;
    text-align: center;
}

.hp_img{
    align-content: center;
    justify-items: center;
}

.hp_img img{
    width: 20vw;
    height: auto;
    display: inherit;
    border-radius: 1vh;
}

.overlay {
    font-family: 'Nunito';
    position: absolute;
    bottom: 0;
    background: rgb(0, 0, 0);
    background: rgba(0, 0, 0, 0.5); 
    color: #fff4e3;
    width: 20vw;
    transition: .5s ease;
    opacity: 0;
    font-size: 12px;
    padding: 2vh;
    text-align: center;
    border-radius: 1vh;
    font-weight: 600;
}

.hp_img:hover .overlay{
    opacity: 1;
}

.timeline_title{
    text-align: center;
    font-family: 'Jua';
    color: #2b2823;
    font-weight: lighter;
    font-size: 28px;
    margin-bottom: 7vh;
    background-color: #fff4e3;
    border: 1vh solid #f0ddc0; 
    padding: 1vw;
    border-radius: 2vh; 
    width: 20vw;
}

.slides {
    margin-top: -20vh;
    position: relative;
    width: 100%;
}

.slide {
    position: relative;
    width: 100%;
    height: 90vh;
    display: none;
    margin-bottom: 20vh;
    padding-right: 2vw;
}
  
.slide:first-child {
    display: block;
}

.prev, .next {
    z-index: 20;
    position: absolute;
    transform: translateY(-50%);
    width: auto;
    padding: 2vw;
    color: #fff4e3;
    font-size: 30px;
    border-radius: 0 3px 3px 0;
    cursor: pointer;
    top: 60%;
}

.prev:hover, .next:hover {
    color: #ffc054;
  }

.next {
    right: 0;
    border-radius: 3px 0 0 3px;
}

.t_slide{
    font-family: 'Jua';
    width: 100%;
    position: absolute;
    display: flex;
    justify-content: center;
}

.t1{
    margin: 20vh 7vh;
    justify-items: center;
    margin-bottom: 0;
}

.t2{
    margin: 30vh 7vh;
    justify-items: center;
    margin-bottom: 0;
}

.slide .t1 h3, .slide .t2 h3{
    font-family: 'Jua';
    color: #fff4e3;
    font-weight: bold;
    font-size: 24px;
    text-shadow: 0px 1px 3px #000000;
}

.slide .t1 p{
    border-radius: 5vh;
    background-color: #fff4e3;
    height: 40vh;
    width: 40vh;
    text-align: center;
    align-content: center;
    border: 1.5vw solid #f0ddc0;
}

.slide .t2 p{
    border-radius: 5vh;
    background-color: #fff4e3;
    height: 40vh;
    width: 40vh;
    text-align: center;
    align-content: center;
    border: 1.5vw solid #f0ddc0;
    opacity: 1;
}

.subsections_attribution{
    display: flex;
}

#team_image{
    background-image: url("images/sand.png");
    background-attachment: relative;
}

.attribution{
    width: 40vw;
}

.reference{
    margin: 2vw;
    padding-left: 2vw;
}

.ref:link{
    color: #222222;
    text-decoration: none;
}

.ref:visited{
    color: #222222;
    text-decoration: none;
}

.ref:hover{
    color: #ffc054;
    text-decoration: underline;
}

.team_page{
    display: flex;
    flex-direction: column;
    align-items: center; 
    justify-content: center;
    width: 100%;
    margin: 0 auto;
}

.team{
    background-color: #f0ddc0;
    display: flex;
    margin: 2vh;
    justify-content: center;
    align-items: center;
    padding: 1.5vw;
    border-radius: 1vw;
    width: 65vw;
}

.image-cropper {
    width: 100px;
    height: 100px;
    position: relative;
    overflow: hidden;
    border-radius: 50%;
}

.team_pics{
  display: inline;
  margin: 0 auto;
  width: 100%;
  height: auto;
  margin-bottom: 5vh;
}

.members1, .members2{
    background-color: #fff4e3;
    height: max-content;
    width: 50vw;
    padding: 4vh;
    border-radius: 3vh;
    right: 0;
    margin-left: 0vw;
}

.members1 ul, .members2 ul{
    list-style: none;
}

.members1 ul li{
    justify-items: center;
}

.members2 ul{
    justify-items: center;
    display: flex;
    justify-content: space-around;
}

.members2 ul li{
    justify-items: center;
}

.subsystem{
    background-color: #fff4e3;
    height: 30vh;
    width: 30vh;
    align-items: center;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    text-align: center;
    font-family: 'Jua';
    font-size: 27px;
}

footer {
    text-align: center;
    background-color: #222222; 
    padding: 2.5vh;
    color: #fff4e3;
    height: 50px;
    z-index: 100;
    width: 100%;
    position: relative;
    bottom: 0;
}

@media (max-width: 768px) {
    .concept-sand{
        padding-left: 0;
    }

    .word{
        width: 100vw;
        text-align: center;
        font-size: 10vh;
    }

    .home_text1{
        font-size: 14px;
        padding-right: 0;
        margin-left: -7vw;
        text-align: center;
        padding: 4vw 0;
    }

    .home_text2 h2{                 
        flex-direction: column;
        align-items: center;
        text-align: center;
        text-align: center;
        padding: 4vw 0;
        font-size: 14px;
        margin-left: -2vw;
        padding-left: 0;
    }

    .home_text2 img{
        margin-left: 0;
    }

    .home_text3 h2{
        font-size: 14px;
        height: fit-content;
        margin-top: 10vh;
    }

    .home_text4{
        font-size: 14px;
    }

    .solution h1{
        padding: 10vw;
        font-size: 15px;
    }

    .solution_links a{
        font-size: 12px;
        display:flow-root;
    }
    .menu-toggle {
        display: block;
        z-index: 100;
        background-color: #222222;
        border-color:  #222222;
        padding: 10px;
        border-radius: 50%;
        cursor: pointer;
    }

    .nav_links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: #222222;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
    }

    .navbar.active .nav_links {
        transform: translateX(0);
    }

    aside{
        display: none;
    }

    .content {
        margin-left: 0;
        padding: 2vh;
        font-size: 10px;
    }

    .ihp_subcontent{
        font-size: 10px;
    }

    .overlay{
        display: block;
        margin: 0;
    }

    .team_page {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        width: 100%;
        margin: 0 auto;
        padding: 3vh 2vw;
    }

    .team {
        flex-direction: column;
        width: 70%; 
    }

    .members1, .members2 {
        font-size: 10px;
        width: 50vw;
        padding: 6vh 4vw;
        margin-bottom: 2vh;
    }

    .subsystem1, .subsystem2 {
        height: 20vh;
        width: 20vh;
        margin-bottom: 2vh; 
    }

    .team {
        flex-direction: column;
    }

    .subsystem1, .subsystem2 {
        order: -1; 
    }

    p{
        font-size: 10px;
    }

    .lists{
        font-size: 10px;
    }

    .ref{
        font-size: 10px;
    }

    .subsystem{
        font-size: 15px;
    }



    footer{
        font-size: 10px;
    }
}