@import url('https://fonts.googleapis.com/css?family=Roboto:100,200,300,400,500,600');

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #EEEEEE;
  text-align: center;
  padding: 1em;
  font-family: 'Roboto', 'Helvetica', sans-serif;
  color: rgba(0, 0, 0, 0.87);
  font-weight: 300;
  /* color: #777; */
  line-height: 1.3;
  font-size: 16px;
}

a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.button {
  display: inline-block;
  position: relative;
  cursor: pointer;
  height: 35px;
  line-height: 35px;
  padding: 0 1.5rem;
  font-size: 15px;
  font-weight: 400;
  /* font-family: 'Roboto', sans-serif; */
  letter-spacing: .8px;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  vertical-align: middle;
  white-space: nowrap;
  outline: none;
  border: none;
  user-select: none;
  border-radius: 2px;
  transition: all .3s ease-out;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.225);
  color: #FFF;
  background-color: #03a9f4;
}

.button:hover {
  background-color: #23b9fc;
  box-shadow: 0 4px 10px 0px rgba(0, 0, 0, 0.225);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  padding: 0;
  font-weight: inherit;
}

/* Specific Styles */
.title {
  text-align: center;
  margin: 0.5rem auto 0;
  font-size: 4em;
  font-weight: 100;
  letter-spacing: 1px;
}

.subtitle {
  text-align: center;
  margin: 0 auto;
  font-size: 1.5em;
  font-weight: 300;
  letter-spacing: -0.5px;
}

.description {
  font-size: 1.3em;
  margin: 1rem auto;
  max-width: 700px;
  /* color:#6e7f99; */
  color: rgba(0, 0, 0, 0.54);
  font-weight: 300;
}

.highlight {
  color: #03a9f4;
  font-weight: 400;
}

.credits {
  font-size: 1.4em;
  margin: 0.5rem auto;
}

.flex {
  display: flex;
  justify-content: center;
}

.flex--colum {
  flex-direction: column;
}

.controlls {
  display: flex;
  margin: 1em auto;
  justify-content: space-around;
  max-width: 300px;
}

.input, .digit, .canvas, canvas {
  border: 1px solid rgba(0, 0, 0, 0.54);
  margin: 1rem;
  background-color: #EEE;
}

.canvas--expression {
  background-color: #EEE;
  background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.87), rgba(0, 0, 0, 0.87) 75%, transparent 75%, transparent 100%);
  background-size: 20px 2px;
  background-repeat: repeat-x;
  background-position: center 75%;
}

.digit {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 10em;
  width: 150px;
  height: 200px;
  font-weight: 300;
}

section + section {
  margin-top: 2em;
}


/* .title {
  font-size: 2em;
  font-weight: 500;
}

.subtitle {
  font-size: 1.5em;
  font-weight: 500;
} */

/* .description {
  color: rgba(0, 0, 0, 0.54)
} */

.instruction {
  font-style: italic;
}


.expression {
  margin-top: 1rem;
  font-size: 1.5em;
  line-height: 2em;
  text-align: center;
}

.latex {
  font-size: 4em;
}

.types {
  display: inline-block;
  margin: 1rem auto 0;
  text-align: left;
  /* display: inline-block; */
  /* background: red; */
}

.types__list {
  display: inline-block;
  text-align: left;
  margin: 0;
  padding: 0;
  margin-left: 2em;
}

.types__list__item {

}

.features {
  display: flex;
  margin: 1.5em 0.5em;
  text-align: left;
  max-width: 800px;
}

@media(max-width: 600px) {
  .features {
    display: block;
    text-align: center;
  }
}

.features__feature {
  flex: 1;
  margin: 0.5em;
}

.features__feature__heading {
  font-weight: 300;
  font-size: 1.2em;
}

.features__feature__copy {
  margin-top: 0.5rem;
  line-height: 1.5;
}

.features__feature__copy a {
  display: inline-block;
}

.digits {
  display: flex;
  align-items: center;
  justify-content: center;
  align-content: center;
}

.arrow {
  font-size: 3em;
}

.socials {
  display: flex;
}

.socials__social {
  font-size: 1.5em;
  margin: 1rem;
  display: flex;
  align-items: center;
  align-content: center;
}

.socials__social__icon {
  font-size: 2em;
}

.socials__social__text {
  margin-left: 8px;
}

.footer {
  color: rgba(0, 0, 0, 0.54);
  margin: 1em;
}

.tab-wrap {
  transition: 0.3s box-shadow ease;
  border-radius: 6px;
  max-width: 100%;
  display: flex;
  flex-wrap: wrap;
  position: relative;
  list-style: none;
  background-color: #fff;
  /* margin: 40px 0; */
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  padding-bottom: 1em;
}
.tab-wrap:hover {
  box-shadow: 0 12px 23px rgba(0, 0, 0, 0.23), 0 10px 10px rgba(0, 0, 0, 0.19);
}

.tab {
  display: none;
}
.tab:checked:nth-of-type(1) ~ .tab__content:nth-of-type(1) {
  opacity: 1;
  transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
  position: relative;
  top: 0;
  z-index: 100;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
  text-shadow: 0 0 0;
}
.tab:checked:nth-of-type(2) ~ .tab__content:nth-of-type(2) {
  opacity: 1;
  transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
  position: relative;
  top: 0;
  z-index: 100;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
  text-shadow: 0 0 0;
}
.tab:checked:nth-of-type(3) ~ .tab__content:nth-of-type(3) {
  opacity: 1;
  transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
  position: relative;
  top: 0;
  z-index: 100;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
  text-shadow: 0 0 0;
}
.tab:checked:nth-of-type(4) ~ .tab__content:nth-of-type(4) {
  opacity: 1;
  transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
  position: relative;
  top: 0;
  z-index: 100;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
  text-shadow: 0 0 0;
}
.tab:checked:nth-of-type(5) ~ .tab__content:nth-of-type(5) {
  opacity: 1;
  transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease;
  transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
  position: relative;
  top: 0;
  z-index: 100;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
  text-shadow: 0 0 0;
}
.tab:first-of-type:not(:last-of-type) + label {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.tab:not(:first-of-type):not(:last-of-type) + label {
  border-radius: 0;
}
.tab:last-of-type:not(:first-of-type) + label {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.tab:checked + label {
  background-color: #fff;
  box-shadow: 0 -1px 0 #fff inset;
  cursor: default;
}
.tab:checked + label:hover {
  box-shadow: 0 -1px 0 #fff inset;
  background-color: #fff;
}
.tab + label {
  box-shadow: 0 -1px 0 #eee inset;
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: #333;
  flex-grow: 3;
  text-align: center;
  background-color: #f2f2f2;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  text-align: center;
  transition: 0.3s background-color ease, 0.3s box-shadow ease;
  height: 50px;
  box-sizing: border-box;
  padding: 15px;
}
.tab + label:hover {
  background-color: #f9f9f9;
  box-shadow: 0 1px 0 #f4f4f4 inset;
}
.tab__content {
  padding: 10px 25px;
  background-color: transparent;
  position: absolute;
  width: 100%;
  z-index: -1;
  opacity: 0;
  left: 0;
  -webkit-transform: translateY(-3px);
          transform: translateY(-3px);
  border-radius: 6px;
}

.container {
  margin: 0 auto;
  display: block;
  max-width: 800px;
}
/* .container > *:not(.tab-wrap) {
  padding: 0 80px;
} */