/* General classes */
:root {
  font-size: 16px;
}

html {
  overflow-x: hidden;
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

a {
  color: #02172E;
}

a:hover {
  color: #10BBC5;
}

.body {
  font-family: 'Muli', sans-serif;
  line-height: 1.7rem;
  color: #02172E;
  text-align: center;
  font-size: 1.1rem;
  overflow-x: hidden;
}

.container {
  margin: 4rem auto;
  width: 70%;
  text-align: center;
  font-size: 1.1rem;
  display: inline-block;
}

.flex-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}

.section-heading {
  font-family: 'Nunito', sans-serif;
  font-size: 1.6rem;
  text-transform: uppercase;
  margin-bottom: 2rem;
  font-weight: bold;
}

.subsection-heading {
  font-family: 'Nunito', sans-serif;
  font-size: 1.2rem;
  text-transform: uppercase;
  border-bottom: 1px solid #979797;
  padding: 0.8rem;
  margin-bottom: 2rem;
  display: block;
  flex-basis: 97%;
}

/* Content classes */
.navigation {
  float: right;
  padding: 1.2rem 3rem 0 0;
  font-size: 0.9rem;
}

.navigation-link {
  text-decoration: none;
  text-transform: uppercase;
  color: #FDFAFA;
  vertical-align: text-bottom;
}

.navigation-link-dark {
  color: #02172E;
}

.landing {
  background-image: linear-gradient(rgba(3, 40, 69, 0.88), rgba(1, 6, 13, 0.88)),
  url('../images/meetupAtSC5.png');
  background-repeat: no-repeat;
  background-size: cover;
  height: 100vh;
  font-size: 1.5rem;
  align-content: center;
  color: #FDFAFA;
}

.landing-container {
  margin: auto;
  padding-top: 35vh;
  width: 50%;
}

.landing-header {
  font-family: 'Nunito', sans-serif;
  font-size: calc(36px + (44.8 - 36) * (100vw - 500px) / (1400 - 500));
  text-transform: uppercase;
}

.landing-ingress {
  font-size: 1.2rem;
  margin-top: 3rem;
}

.landing-link {
  font-family: 'Nunito', sans-serif;
  border: 0.2rem solid #7FF5FC;
  padding: 0.6rem;
  color: #7FF5FC;
  display: block;
  text-decoration: none;
  text-transform: uppercase;
  margin: 3rem auto;
  width: 10rem;
  font-size: 1rem;
}

.text-content {
  margin-bottom: 3rem;
}

#slack-invite-return-message.error {
  color:red;
}

#slack-invite-return-message.success {
  color:green;
}

#slack-invite-email, #slack-invite-button {
  font-family: 'Nunito', sans-serif;
  padding: 0.6rem;
  font-size: 1rem;
}

#slack-invite-button {
  background-image: linear-gradient(#072E4D, #02162C);
  color: white;
  border: none;
}

.event, .some {
  width: 45%;
  min-width: 15rem;
  margin-bottom: 2.5rem;
}

.slack-invite {
  margin-bottom: 2.5rem;
}

.event-title {
  font-family: 'Nunito', sans-serif;
}

.some img {
  width: 23%;
  padding-right: 5%;
}

.presentation {
  width: 20rem;
  margin: 0 auto 2rem auto;
}

.presentation:nth-child(n+4) { /*show heading + 2 presentations */
  display: none;
}

.presentation-toggle {
  text-decoration: underline;
  color: #02172E;
  font-size: 0.8rem;
  display: inline-block;
}

.technologies {
  background-image: linear-gradient(#072E4D, #02162C);
  align-content: center;
  color: #FDFAFA;
}

.resource-box {
  margin-bottom: 2rem;
}

@media (min-width: 1100px) {
  .container {
    width: 60%;
  }
}

@media (max-width: 500px) {
  nav {
    display: none;
  }

  .container, .landing-container {
    width: 90%;
  }

  .landing-container {
    padding-top: 20vh;
  }

  .some, .event {
    min-width: 10rem;
    width: 95%;
  }

  .presentation:nth-child(n+5) {
    display: none;
  }
}