@import url('https://fonts.googleapis.com/css?family=Montserrat:200,300,400,500,600,700');

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
}


html {
  /*--green: #1d9294;*/
  /*--color: #3b718b;*/
  --color: #f2f2f2ff;
  --blue:#0070c0ff;
}

.dark {
  --color:#083a53;
}

/* width */
::-webkit-scrollbar {
  width: 5px;
}

/* Track */
::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 5px;
}

/* Handle */
::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 5px;
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
  background: var(--color);
}

input[type=checkbox]{
	height: 0;
	width: 0;
	visibility: hidden;
}

.toggle {
	cursor: pointer;
	text-indent: -9999px;
	width: 60px;
	height: 30px;
	background: #bebebe;
	display: block;
	border-radius: 100px;
  position: relative;
}

.toggle:after {
	content: '';
	position: absolute;
	top: 5px;
	left: 5px;
	width: 20px;
	height: 20px;
	background: #fff;
	border-radius: 90px;
	transition: 0.1s;
}

input:checked + .toggle {
	background: var(--color);
}

input:checked + .toggle:after {
	left: calc(100% - 5px);
	transform: translateX(-100%);
}

.toggle:active:after {
	width: 50px;
}


body{
  /*background: linear-gradient(180deg, var(--green) 0%, rgb(12, 47, 56) 100%);*/
  background: var(--color);
}

/*HEADER*/
header {
  position: relative;
  max-width: 1200px;
  margin: 20px auto;
  padding: 3px;
  background: #fff;
  box-sizing: border-box;
  border-radius: 5px;
 /* box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);*/
}

.logo {
  color: #dadadaff;
  height: 50px;
  font-size: 25px;
  line-height: 60px;
  padding-left:20px;
  text-align: center;
  box-sizing: border-box;
  float: left;
  font-weight: 500;
  text-decoration: none;
}

nav {
  float: right;
}

.clearfix{
  clear: both;
}

nav ul {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

header nav ul li {
  list-style: none;
  align-content: center;
  display: flex;
}

nav ul li a{
  display: block;
  margin: 10px 0;
  padding: 10px 20px;
  text-decoration: none;
  color: var(--blue);
  font-weight: 500;
}

nav ul li a.active, nav ul li a:hover {
  background: var(--blue);
  color:#fff;
  transition: 0.5s;
}
/*HEADER*/
.save-div {
   align-self: center;
   height: 100%;
   display: flex;
   justify-content: center;
   align-items: center;
}

.save {
  display: block;
  background: black;
  color: white;
  border: none;
  padding: 10px 20px;
  transition: 0.3s;
}

.save:Hover, .save-all:hover {
  background: var(--blue);
}

.save-all {
  display: block;
  cursor: pointer;
  background: black;
  color: white;
  border: none;
  padding: 15px 50px;
  transition: 0.3s;
  font-size: 18px;
  max-width: 200px;
  text-align: center;
  margin: 0 auto;
  justify-content: ce;
}

.save-all-div {
  text-align: center;
  margin-bottom: 40px;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
}

.show-button {
  cursor: pointer;
  background: black;
  color: white;
  text-decoration: none;
  padding: 20px 30px;
  font-weight: 500;
  transition: 0.3s;
  border-radius: 40px;
  position: fixed;
  bottom: 15px;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.show-button:hover {
  background: var(--blue);
}

.show-button-div {
  text-align: center;
  margin-top: 50px;
}

th {
  background: black;
  color: white;
}

.ql-toolbar.ql-snow {
  position: sticky;
  top: 0;
  background-color: #fff; 
  z-index: 1000;
}

/*MAIN*/
main {
  position: relative;
  max-width: 1200px;
  margin: 20px auto;
  min-height: 90vh;
  background: #fff;
  box-sizing: border-box;
  border-radius: 4px;
  /*box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);*/
  padding: 30px;
}

.tb-main {
  max-width: 95%;
  margin: 50px auto;
}

.transparent {
  background: transparent;
  border:none;
  padding: 0;
  box-shadow: none;
  margin-top: 60px;
  min-height: 90vh;
}

.marginTop {
  margin-top:20px;
}

  /*students*/
.students {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-gap: 30px;
  align-items: center;
  justify-content: center;
}

.students-element {
  text-align: center;
  background: #fff;
  padding: 40px 0;
  border-radius: 5px;
  transition: 0.4s;
  color: #595959ff;
  /* box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); */
}

.student-content {
  width: 100%;
  height: 100%;
}

.students-element:hover {
  /* background-color: rgba(0, 0, 0, 0.15); */

  /*color: #fff;
  background: var(--blue);*/

  background: #e7e6e6ff;
}

.weight400 {
  font-weight: 400;
}

.link {
  text-decoration: none;
  color: #000;
}

.underline-none {
  text-decoration: none;
}

.link-black {
  text-decoration: none;
  color: #000;
}

.link-black:hover {
  text-decoration: underline;
}

.underline {
  color: var(--blue);
  text-decoration: underline;
  font-weight: 500;
}

  /*students*/

.center {
  text-align: center;
  margin-bottom: 20px;
}

.marginzero {
  margin: 0;
}

.lessonDetailHeader {
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.icon {
  font-size: 17px;
}

.TwoButtons {
  display: grid;
  grid-template-columns: 40% 60%;
  margin-bottom: 50px;
}

.OneButton {
  text-align: center;
}

.margin50 {
  margin-bottom:50px;
}

.black-dash {
  background: rgb(92, 86, 86);
  width: 1.5px;
}

.lessons-content {
  margin-top: 50px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
  max-height: 70vh;
  overflow: auto;
  overflow-x: hidden;
}

.homework-content {
  margin-top: 20px;
  max-height: 70vh;
  overflow: auto;
  overflow-x: hidden;
}

.lesson {
  padding: 5px 20px;
}

.earlier-lessons-div {
  padding: 5px 20px;
}

.hw {
  padding: 10px 20px;
  margin-bottom: 20px;
  text-align: left;
}

.fa-plus {
  color: black;
  padding-left: 2px;
  /* margin-top: 10px; */
}

.fa-plus:hover {
  color: var(--blue);
}

.half {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-gap: 20px;
  justify-content: center;
  align-content: center;
  align-items: center;
  margin: 0;
}

.homework-title {
  margin: 20px 0;
}

.second-half {
  text-align: right;
}

.lesson-detail-content {
  max-height: 80vh;
  overflow: auto;
  margin: 0 auto;
  max-width: 1100px;
  margin-top: 40px;
}

.lesson-detail-content td {
  padding: 30px;
  border: 2px dashed black;
  overflow: auto;
}

.lesson-detail-content tr {
  border: 2px solid black;
  overflow: auto;
}

.float-r {
  float: right;
}

.float-l {
  float: left;
}

.tabularOverviewContent {
  padding: 0;
}

.tabular td {
  border: 2px solid black;
  max-height: 100px;
}

.tabular th {
  border: 2px solid black;
  padding: 10px;
}

.vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg) scale(1.2);
  font-weight: bold;
  text-align: center;
}

.rotate {
  transform: rotate(0deg) scale(1.2);
}

.scale {
  transform: scale(1.2);
}

.tb-date {
  width: 40px;
  padding: 15px 10px;
  align-self: center;
}

.no-border {
  border: 2px solid white !important;
}

.homework-table {
  width: auto;
  padding: 5px;
}

.table-table {
  width: auto;
  padding: 5px;
}

.tox-editor-header {
  display: none;
}

.whole-table {
  display: grid;
  grid-template-columns: 40px 1fr 1fr 1fr 40px ;
}

.whole-table-all {
  display: grid;
  grid-template-columns: 80px 1fr 1fr 1fr;
}

.whole-table-head {
  display: grid;
  grid-template-columns: 40px 1fr 1fr 1fr 40px ;
  justify-items: center;
  font-weight: bold;
  margin-bottom: 10px;
}

.name {
  text-align: left;
  color: #dadadaff;
  font-weight: 500;
  font-size: 25px;
}

/*MAIN*/

/*FOOTER*/

/*FOOTER*/

/*FORM*/
.form{
  background: #fff;
  padding: 40px;
  min-width: 300px;
  max-width: 800px;
  border-radius: 5px;
  position: absolute;
  top:40%;
  left:50%;
  transform:translate(-50%, -40%);
  color: #000;
}

.about {
  display: grid;
  grid-gap: 10px;
}

.about h2 {
  margin: 10px;
}

.input {
  width: 100%;
  margin: 10px 0 20px 0;
  padding: 0 0 1px 2px;
  font-size: 1rem;
  border:none;
  border-bottom: 0.1px solid #000;
}

.label {
  margin: 10px 0;
}

.button {
  border: none;
  text-decoration: none;
  background: black;
  color: white;
  padding: 10px 20px;
  margin-top: 10px;
  font-size: 15px;
  text-align: center;
  transition: 0.3s;
}

textarea {
  line-height: 10px;
}

.button:hover {
  background: var(--blue);
}

.link-delete, .link-update {
  margin-top: 0;
  font-size: 20px;
}

.fas {
  /* font-size: 30px; */
  font-size: 17px;
}

.fa-pen {
  color: black;
  opacity: 0.7;
}

.fa-pen:hover {
  opacity: 1;
}

.fa-trash {
  color: red;
  opacity: 0.7;
}

.fa-trash:hover {
  opacity: 1;
}

.middle {
  text-align: center;
}
/*FORM*/

hr {
  border: 0;
  height: 1px;
  background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0));
}

/*MEDIA*/
@media (max-width: 1200px) {
  header{
    margin: 20px;
  }
  main{
    margin: 20px;
  }
}

@media (max-width: 990px) {
  .students {
    grid-template-columns: 1fr 1fr 1fr;
  }
}


@media (max-width: 865px) {

  .menu-toggle{
    display: block;
    width: 35px;
    height: 35px;
    margin: 10px;
    float: right;
    cursor: pointer;
    text-align: center;
    font-size: 30px;
    color: var(--color);
  }
    .menu-toggle:before{
    content: '\f0c9';
    font-family: fontAwesome;
    line-height: 40px;
  }

  .menu-toggle.active:before{
    content: '\f00d';
    font-family: fontAwesome;
    font-size: 35px;
  }

  header nav ul li {
    display: block;
  }

  nav {
    display: none;
  }

  nav.active{
    display: block;
    width:100%;
  }

  nav.active ul {
    display: block;
  }

  nav.active ul li a{
    margin: 0;
  }
}

@media (max-width: 750px) {
  .students {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 500px) {
  .students {
    grid-template-columns: 1fr;
  }

  main {
    padding: 20px 10px;
  }

  .OneButton h1 {
    font-size: 20px;
  }
}

@media (max-width: 450px) {
  .logo {
  
    padding-left: 0;
  }

  header, main {
    margin: 15px;
  }
}

@media (max-width: 400px) {
  
}
/*MEDIA*/