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

:root {
  --colour-primary: rgb(0, 125, 190);
  --colour-secondary: rgb(0, 183, 199);
  --colour-tertiary: rgb(35, 31, 32);
  --colour-quarternary: #f2f3f5;
  --colour-quinary: rgb(99, 100, 102);
}

/** Some global styles **/
body {
  font-family: "Century Gothic", sans-serif;
  background-color: var(--colour-quarternary);
}

h1,
h2,
h3 {
  color: var(--colour-secondary);
  margin-bottom: 1rem;
  font-weight: 900;
}

p {
  margin-bottom: 1rem;
}

li {
  list-style: none;
}

span.highlight {
  font-weight: bold;
  color: red;
}

/*************************************************************************/

.container {
  margin: 1rem auto;
  width: 70%;
}

header {
  display: flex;
  background-color: var(--colour-primary);
  color: white;
  padding: 1rem;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

header li {
  display: inline-block;
  font-size: 1rem;
  list-style-type: none;
  padding: 1rem;
  text-transform: uppercase;
}

header li span {
  display: block;
  font-size: 2rem;
}

.logo {
  flex: 1;
}
.research-info {
  flex: 1;
  padding: 0 1.5rem;
}
.research-info h1 {
  font-size: 3rem;
  color: white;
}

.research-info--title {
}

.research-info--date {
}

.timer {
  flex: 1;
  display: flex;
  padding: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/****** Navigation links ******/
nav {
  height: 8vh;
  background-color: var(--colour-tertiary);
}

nav ul.navigation--nav-links {
  display: flex;
  width: 100%;
  height: 100%;

  justify-content: space-around;
  align-items: center;
}

nav ul.navigation--nav-links li {
  list-style: none;
}

nav ul.navigation--nav-links li a {
  text-decoration: none;
  color: white;
  position: relative;
  padding: 0.4rem 0.6rem;
  font-size: 1.3rem;
}

ul.navigation--nav-links li a:link::before,
ul.navigation--nav-links li a:visited::before,
ul.navigation--nav-links li a:link::after,
ul.navigation--nav-links li a:visited::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 0.25rem;
  background-color: white;

  transform: scaleX(0);

  transition: transform 0.6s cubic-bezier(1, 0, 0, 1);
}

ul.navigation--nav-links li a:link::before,
ul.navigation--nav-links li a:visited::before {
  top: 0;
  /* Transform origin is center by default */
  transform-origin: left;
}

ul.navigation--nav-links li a:link::after,
ul.navigation--nav-links li a:visited::after {
  bottom: 0;
  transform-origin: right;
}

ul.navigation--nav-links li a:hover::before,
ul.navigation--nav-links li a:active::before,
ul.navigation--nav-links li a:hover::after,
ul.navigation--nav-links li a:active::after {
  transform: scaleX(1);
}

/****** Main content ******/
main {
  background-color: white;
  line-height: 1.5;
  padding: 1rem;
  text-align: justify;
}

/*** Dates and location **/
.venue {
  display: flex;
  flex-wrap: wrap;
}

.venue__dates {
  margin: 0 2rem 2rem 2rem;
  padding: 1rem;
  flex: 1;
  box-shadow: rgba(6, 24, 44, 0.4) 0px 0px 0px 2px,
    rgba(6, 24, 44, 0.65) 0px 4px 6px -1px,
    rgba(255, 255, 255, 0.08) 0px 1px 0px inset;
}

.venue__dates--date {
  /* background-color: #541690; */
  background-color: var(--colour-primary);
  display: inline-block;
  padding: 1rem 2rem;
  color: white;
  border-radius: 0.5rem;
  margin: 1rem 0;
  font-size: 1.2rem;
  width: 100%;
  text-align: center;
  font-weight: bold;
}

.venue__dates--location {
  font-size: 1rem;
  margin-bottom: 2rem;
}

/************************ Style unordered list *************/
ul.list {
  /* list-style-position: inside; */
  margin-left: 1.2rem;
}

li.list-item {
  list-style-type: disc;
}

/************** Scroll to top button *******************/
.scroll {
  position: fixed;
  bottom: 4rem;
  right: 4rem;
  width: 3rem;
  height: 3rem;
  background-image: url("../images/scroll.svg");
  background-repeat: no-repeat;
  background-color: var(--colour-secondary);
  border-radius: 50%;
  background-size: contain;
  background-position: center;
  padding: 0.6rem;
  z-index: 30;
  cursor: pointer;
  visibility: hidden;
  opacity: 0;
  transition: all 0.5s ease;
}

.scroll.active {
  visibility: visible;
  opacity: 1;
  bottom: 4rem;
}

footer {
  padding: 1rem;
  height: 50px;
  background-color: var(--colour-tertiary);
  color: white;
  font-weight: bold;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
}

/**********Style for contact part************/
.desc {
  text-align: center;
}

/**********Style for Registration **********************************/

/************  Media queries  **************/
/* Make navigation responsive */
@media all and (max-width: 900px) {
  nav {
    width: 30rem;
    height: 100%;
    position: fixed;
    top: 0;
    right: -30rem;
    background-color: var(--colour-tertiary);
    text-align: center;
  }
  .navigation--hamburger {
    width: 5rem;
    height: 5rem;
    position: fixed;
    top: 2rem;
    right: 9rem;
    cursor: pointer;
    background-color: var(--colour-tertiary);
    padding: 1rem;
    border-radius: 50%;

    display: flex;
    flex-direction: column;
    justify-content: space-around;
  }

  .line {
    width: 100%;
    height: 0.3rem;
    background-color: white;
    border-radius: 0.2rem;
    transition: all 0.4s ease-in-out;
  }
  ul.navigation--nav-links {
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
  }

  ul.navigation--nav-links li {
    margin-bottom: 4vh;
    margin-left: 6vw;
  }

  .clicked {
    left: 55%;
  }
}