@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap");
@import url("https://fonts.googleapis.com/css?family=Montserrat");

::after,
::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
}

li {
  list-style: none;
}

h1 {
  font-weight: 600;
  font-size: 1.5rem;
}

body {
  margin-top: 60px;
  font-family: "Poppins", sans-serif;
}

.wrapper {
  display: flex;
}

.main {
  min-height: 100vh;
  width: 100%;
  overflow: hidden;
  transition: all 0.35s ease-in-out;
  background-color: black;
}

#sidebar {
  width: 70px;
  min-width: 70px;
  z-index: 1000;
  transition: all 0.25s ease-in-out;
  background-color: #0e2238;
  display: flex;
  flex-direction: column;
}

#sidebar.expand {
  width: 260px;
  min-width: 260px;
}

.toggle-btn {
  background-color: transparent;
  cursor: pointer;
  border: 0;
  padding: 1rem 1.5rem;
}

.toggle-btn i {
  font-size: 1.5rem;
  color: #fff;
}

.sidebar-logo {
  margin: auto 0;
}

.sidebar-logo a {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 600;
}

#sidebar:not(.expand) .sidebar-logo,
#sidebar:not(.expand) a.sidebar-link span {
  display: none;
}

.sidebar-nav {
  padding: 2rem 0;
  flex: 1 1 auto;
}

a.sidebar-link {
  padding: 0.625rem 1.625rem;
  color: #fff;
  display: block;
  font-size: 0.9rem;
  white-space: nowrap;
  border-left: 3px solid transparent;
}

.sidebar-link i {
  font-size: 1.1rem;
  margin-right: 0.75rem;
}

a.sidebar-link:hover {
  background-color: rgba(255, 255, 255, 0.075);
  border-left: 3px solid #3b7ddd;
}

.sidebar-item {
  position: relative;
}

#sidebar:not(.expand) .sidebar-item .sidebar-dropdown {
  position: absolute;
  top: 0;
  left: 70px;
  background-color: #0e2238;
  padding: 0;
  min-width: 15rem;
  display: none;
}

#sidebar:not(.expand) .sidebar-item:hover .has-dropdown + .sidebar-dropdown {
  display: block;
  max-height: 15em;
  width: 100%;
  opacity: 1;
}

#sidebar.expand .sidebar-link[data-bs-toggle="collapse"]::after {
  border: solid;
  border-width: 0 0.075rem 0.075rem 0;
  content: "";
  display: inline-block;
  padding: 2px;
  position: absolute;
  right: 1.5rem;
  top: 1.4rem;
  transform: rotate(-135deg);
  transition: all 0.2s ease-out;
}

#sidebar.expand .sidebar-link[data-bs-toggle="collapse"].collapsed::after {
  transform: rotate(45deg);
  transition: all 0.2s ease-out;
}

.header-hover .nav-link:hover {
  background-color: rgb(0, 173, 181);
}

.latex {
  color: white;
  justify-content: center;
  text-align: center;
  font-size: 1.5em;
  padding: 2%;
}

.embed-responsive {
  position: relative;
  padding-top: 0%;
}

.sticky {
  height: 100%;
  position: sticky;
  top: 3.5rem;
}

aside {
  min-height: 100vh;
}

video {
  pointer-events: none;
}

.main-content {
  color: rgb(124, 121, 121);
  font-family: "Montserrat", sans-serif;
}

hr {
  border-color: white;
}

.katex {
  font-size: 1em;
}

.horiscroll {
  overflow-x: auto;
  overflow-y: hidden;
}

#scrollButon {
  display: none; /* Hidden by default */
  position: fixed; /* Fixed/sticky position */
  bottom: 20px; /* Place the button at the bottom of the page */
  right: 30px; /* Place the button 30px from the right */
  z-index: 99; /* Make sure it does not overlap */
  border: none; /* Remove borders */
  outline: none; /* Remove outline */
  background-color: rgb(21, 26, 115); /* Set a background color */
  color: white; /* Text color */
  cursor: pointer; /* Add a mouse pointer on hover */
  padding: 15px; /* Some padding */
  border-radius: 10px; /* Rounded corners */
  font-size: 18px; /* Increase font size */
}

#scrollButon:hover {
  background-color: #555; /* Add a dark-grey background on hover */
}