:root {
  --main-width: 1280px;
  --main-height: 720px;
  --main-side-nav-width: 100px;
  --main-side-nav-box: 90px;
  --main-side-nav-border: 3px;
  --main-side-nav-button: calc(
    0.9 * (var(--main-side-nav-box) - 2 * (var(--main-side-nav-border)))
  );
  --main-side-nav-margin: calc(
    (var(--main-side-nav-width) - var(--main-side-nav-box)) / 2
  );
  --main-content-width: calc(var(--main-width) - var(--main-side-nav-width));

  --main-side-nav-flag-default-filter: grayscale(100%);
  --main-side-nav-flag-default-opacity: 0.4;
}

html {
  touch-action: manipulation;
  outline: 0;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
  margin: 0px;
  padding: 0px;
  background-color: #aaa;
}

body {
  touch-action: manipulation;
  outline: 0;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
  font-weight: normal;
  margin: 0px;
  padding: 0px;
}

@font-face {
  font-family: 'Playpen Sans';
  src: url('/res/fonts/PlaypenSans-Bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

div.main-view {
  margin-top: 15px;
}

.main-view.app {
  margin-top: 0px;
  position: absolute;
  transform-origin: top left;
}

table.main-outer {
  width: var(--main-width);
  height: var(--main-height);
  margin-left: auto;
  margin-right: auto;
}

td.main-side-nav {
  width: var(--main-side-nav-width);
  background-color: black;
  text-align: center;
  vertical-align: top;
  overflow: hidden;
  position: relative;
}

td.main-content {
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  position: relative;
}

div.main-nav-button {
  cursor: pointer;
  width: var(--main-side-nav-button);
  height: var(--main-side-nav-button);
  border-radius: 8px;
  margin-left: auto;
  margin-right: auto;
  background-position: center;
  background-repeat: no-repeat;
  margin-top: calc(var(--main-side-nav-margin) * 1.6);
  border: var(--main-side-nav-border) solid black;
  z-index: 1;
}

.main-nav-button.selected {
  border: var(--main-side-nav-border) solid rgb(255, 205, 0);
}

.main-nav-button.grayed-out {
  opacity: 0.6;
}

.main-nav-button.grayed-out:hover {
  opacity: 1;
  border-color: black;
}

.main-nav-button:hover {
  border: var(--main-side-nav-border) solid rgb(255, 205, 0);
}

.main-nav-button.first {
  background-image: url(/res/image/nav/hindi.svg);
  background-size: 35%;
}

.main-nav-button.second {
  background-image: url(/res/image/nav/math.svg);
  background-size: 70%;
}

.main-nav-button.third {
  background-image: url(/res/image/nav/english.svg);
  background-size: 50%;
}

.main-nav-button.fourth {
  background-image: url(/res/image/nav/knowledge.svg);
  background-size: 50%;
}

.main-nav-button.fifth {
  background-image: url(/res/image/nav/books.svg);
  background-size: 64%;
}

.main-nav-button.sixth {
  background-image: url(/res/image/nav/vikas.svg);
  background-size: 50%;
}

div.main-nav-flag {
  width: var(--main-side-nav-button);
  height: calc(var(--main-side-nav-button) / 3 * 2);
  margin-left: auto;
  margin-right: auto;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  border: var(--main-side-nav-border) solid black;
  z-index: 1;
  border-radius: 0px;
  filter: var(--main-side-nav-flag-default-filter);
  opacity: var(--main-side-nav-flag-default-opacity);
}

div.main-ip {
  cursor: pointer;
  margin-top: calc(var(--main-side-nav-margin) * 4.8);
  margin-bottom: calc(var(--main-side-nav-margin) * 2.5);
}

iframe.main-content {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  position: relative;
  left: 0px;
  top: 0px;
  display: block;
  border: 1px solid black;
}

div.content-title-outer {
  position: absolute;
  left: 40px;
  top: 40px;
}

div.content-title-text {
  font-weight: 500;
  font-size: 64px;
  margin-right: 25px;
  display: inline-block;
}

.content-title-line {
  cursor: pointer;
  font-size: 25px;
  text-decoration: none;
  color: black;
}

.main-nav-flag.hybrid {
  margin-top: calc(var(--main-side-nav-margin) * 4);
  background-image: url(/res/image/menuFlags/menuFlagEn.png);
  opacity: 1;
  filter: none;
  border: inherit;
  border: 2px solid;
  outline: 3px solid #2d6aee;
  border-radius: 6px;
}

.main-nav-flag.hybrid.hi {
  background-image: url(/res/image/menuFlags/menuFlagHi.png);
  outline: 3px solid #df8106;
  border: 2px solid;
}

.main-nav-flag.hybrid.active {
  opacity: 1;
  filter: none;
  cursor: pointer;
  pointer-events: auto;
}

.main-nav-flag.hybrid.not-active {
  filter: var(--main-side-nav-flag-default-filter);
  opacity: var(--main-side-nav-flag-default-opacity);
  border: black;
  cursor: default;
  pointer-events: none;
  outline: none;
}

.main-nav-flag.hybrid.hybrid-lesson.flash {
  animation-name: flash;
  animation-duration: 0.2s;
  animation-iteration-count: 5;
}

.main-side-nav.cto-flash .main-nav-button,
.main-side-nav #divFlag_hybrid.cto-flash {
  animation-name: cto-flash;
  animation-duration: 0.2s;
  animation-iteration-count: 9;
}

@keyframes cto-flash {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes flash {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.2;
  }
  100% {
    opacity: 1;
  }
}

#divMainIP {
  pointer-events: none;
}

#divMainIP.clickable {
  pointer-events: auto;
}

/* landing */

html {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: 100%;
}

.landing-content {
  position: absolute;
  height: 100%;
  width: 100%;
  z-index: 1;
  border: 1px solid black;
  box-sizing: border-box;
}

.app .landing-content {
  background-repeat: no-repeat;
  background-size: cover;
  background-position: bottom;
}

h3 {
  font-size: 36px;
  margin-bottom: 0px;
}

li {
  margin-bottom: 16px;
}

.container {
  display: flex;
  font-size: 24px;
  position: relative;
  top: 23%;
  margin: 0px 35px;
}

.text {
  margin-left: 20px;
  padding-right: 20px;
  opacity: 0.8;
  width: 625px;
}

.text h3 {
  font-family: 'Playpen Sans', 'Segoe UI', 'Helvetica Neue', Helvetica, Arial,
    sans-serif;
}

.text h3,
.text li,
.text p {
  cursor: pointer;
}

#landingFlags {
  position: absolute;
  top: 65px;
  right: 45px;
  text-align: right;
}

#landingFlags img {
  margin-left: 20px;
  width: 100px;
  height: 66px;
  border: 1px solid rgb(27, 27, 27);
  cursor: pointer;
}

#landingFlags .active {
  outline: rgb(255, 208, 0) 5px solid;
  pointer-events: none;
}

@keyframes flash-next-btn {
  0% {
    opacity: 1;
  }
  60% {
    opacity: 1;
  }
  70% {
    opacity: 0;
  }
  76.5% {
    opacity: 1;
  }
  83% {
    opacity: 0;
  }
  89.5% {
    opacity: 1;
  }
  93% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

#nextBtn {
  position: absolute;
  bottom: 45px;
  right: 45px;
  text-align: right;
  cursor: pointer;
  animation: flash-next-btn 2.5s;
  transition: scale 0.2s;
}

#nextBtn:active {
  transform: scale(95%);
}

.counter {
  position: absolute;
  right: 30px;
  color: #444;
  top: 385px;
  font-size: 24px;
  text-align: center;
  font-weight: bold;
  border-radius: 6px;
  background-color: white;
  padding: 4px 14px 5px 14px;
  opacity: 85%;
  -webkit-box-shadow: 0px 0px 5px 0px rgba(0, 0, 0, 0.53);
  -moz-box-shadow: 0px 0px 5px 0px rgba(0, 0, 0, 0.53);
  box-shadow: 0px 0px 5px 0px rgba(0, 0, 0, 0.53);
}

/* Slideshow */

.slideshow-container {
  width: 400px;
  height: 225px;
  margin: auto;
}
.slide {
  display: none;
  width: 100%;
  height: 100%;
}
.slideshow-container img {
  width: 100%;
  height: 100%;
  border: 1px solid rgb(152, 151, 151);
}

.logo {
  position: absolute;
  top: 20px;
  right: 20px;
  -webkit-box-shadow: 0px 0px 2px 0px rgba(0, 0, 0, 0.65);
  -moz-box-shadow: 0px 0px 2px 0px rgba(0, 0, 0, 0.65);
  box-shadow: 0px 0px 2px 0px rgba(0, 0, 0, 0.65);
  z-index: 1;
  cursor: pointer;
}

.refresh-icon {
  position: absolute;
  top: 90px;
  right: 20px;
  z-index: 99;
  cursor: pointer;
  transition: scale 0.2s;
}

.refresh-icon:hover {
  filter: contrast(150%);
}

.refresh-icon:active {
  transform: scale(95%);
}