@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');

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

body {
  background-color: #f9f9f9;
  background-size: cover;
}

.header {
  display: flex;
  justify-content: space-between;
  width: 100%;
}

.header-top-bar {
  display: none;
}

.header-bottom-bar {
  position: fixed;
}

.logo,
.desktop-menu {
  display: none;
}

.burger {
  display: block;
  padding-top: 5px;
  cursor: pointer;
  position: absolute;
  z-index: 1000;
  left: 5%;
  margin: 24px;
  font-size: 2rem;
}

.nav a {
  margin-bottom: 40px;
  font-family: "Lato", sans-serif;
  font-size: 32px;
  font-style: normal;
  font-weight: 600;
  line-height: 44px;
  letter-spacing: 0;
  text-align: left;
  text-decoration: none;
  display: block;
}

.mobile-menu {
  display: block;
  list-style: none;
  position: fixed;
  padding: 4rem;
  top: -120%;
  left: 0;
  width: 100%;
  height: 100%;
  background: #d3d3d3;
  opacity: 0.9;
}

.mobile-menu a {
  display: flex;
  font-family: 'Lato', sans-serif;
  font-weight: normal;
  font-size: 20px;
  line-height: 24px;
  align-items: center;
  color: #000;
  padding: 20px;
  list-style-type: none;
  margin-left: 20px;
  margin-right: 20px;
  text-decoration: none;
}

.fa-times::before,
.fa-xmark::before {
  content: "\f00d";
  color: #272a31;
}

.navigation nav.nav-toggle {
  top: 0;
}

a.last-menu-link {
  font-family: 'Lato', sans-serif;
  font-weight: normal;
  width: 100%;
  border: 3px solid #ec5242;
  color: #ec5242;
}

/* Headline Section */

.headline {
  display: flex;
  flex-direction: column;
  background-image: url('images/mobile-home.png');
  background-repeat: no-repeat;
  background-size: 100%;
}

.hello-title {
  font-family: 'Lato', sans-serif;
  font-style: normal;
  font-size: 30px;
  font-weight: bold;
  padding-bottom: 12px;
  margin-top: 150px;
  margin-left: 24px;
  background: none;
  color: #ec5242;
}

h1.title {
  font-family: 'Lato', sans-serif;
  font-style: normal;
  font-size: 40px;
  font-weight: bolder;
  padding-bottom: 24px;
  margin-left: 24px;
  text-align: left;
  background-image: url('images/textbackground.jpeg');
  background-size: 150%;
  color: transparent;
  background-position: 95%;
  -webkit-background-clip: text;
}

.info-desc {
  margin-left: 24px;
  margin-right: 24px;
  font-family: 'Lato', sans-serif;
  font-style: normal;
  text-align: left;
  font-size: 15px;
  font-weight: bold;
  padding: 15px;
  color: #5e5e5e;
  background-color: #f9f9f9;
  border: 5px solid #fff;
}

.date {
  margin-top: 24px;
  margin-left: 24px;
  color: #2d2d2d;
  font-weight: bolder;
  font-family: 'Lato', sans-serif;
  font-size: xx-large;
  background: none;
}

.location {
  color: #5e5e5e;
  font-weight: bold;
  font-family: 'Lato', sans-serif;
  margin-right: 24px;
  margin-left: 24px;
  margin-bottom: 100px;
  font-size: 15px;
  background: none;
}

/* Program Section */

.program {
  background-image: url('images/main-program-bg.png');
  background-repeat: repeat;
  background-position: center;
  background-size: 35px 35px;
}

.program-title {
  font-family: 'Lato', sans-serif;
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  padding-top: 24px;
  padding-bottom: 10px;
  color: #fff;
  background: none;
}

hr {
  margin-left: 45%;
  margin-right: 45%;
  margin-bottom: 20px;
  border-bottom: 3px solid #ec5242;
}

.program-cards {
  display: flex;
  flex-direction: column;
  background: none;
}

.lecture,
.web-design,
.mobile-app,
.discussion,
.community {
  display: grid;
  grid-template-columns: 1fr 2fr 4fr;
  grid-gap: 5px;
  padding: 15px;
  margin: 12px 24px;
  background-color: rgba(84, 84, 84, 0.5);
}

.lecture:hover,
.web-design:hover,
.mobile-app:hover,
.discussion:hover,
.community:hover {
  border: 2px solid #fff;
}

.card-title {
  color: #ec5242;
  font-family: 'Lato', sans-serif;
  font-size: 15px;
  font-weight: bold;
  text-align: left;
  padding: 15px;
}

.program-desc {
  font-family: 'Lato', sans-serif;
  font-style: normal;
  color: #fff;
  font-size: 14px;
}

.button-1 {
  padding: 24px;
  margin-top: 24px;
  margin-bottom: 24px;
  font-family: 'Lato', sans-serif;
  font-size: large;
  font-weight: bold;
  color: #fff;
  background-color: #ec5242;
  text-align: center;
  align-self: center;
  border: none;
}

.button-1:hover {
  top: calc(50% - 48px / 2);
  color: #ec5242;
  background: #fff;
  border: 1px solid #ec5242;
  box-sizing: border-box;
  border-radius: 8px;
  order: 3;
  box-shadow: 0 8px 16px rgba(236, 104, 104, 0.856);
  cursor: pointer;
}

.button-1:visited {
  color: #000;
  background: #ec5242;
  border: 1px solid #fff;
  box-sizing: border-box;
  cursor: pointer;
}

.link-1 {
  display: none;
}

/* Featured Speakers */
.speaker-title {
  text-align: center;
  font-family: 'Lato', sans-serif;
  font-size: 20px;
  font-weight: bold;
  padding-top: 20px;
  padding-bottom: 10px;
}

.speaker-picture {
  display: flex;
  flex-direction: row;
  margin: 24px;
}

.speaker-picture img {
  box-shadow: -20px -10px rgba(0, 0, 0, 0.5);
  margin: 24px;
  width: 30%;
  height: 30%;
  object-fit: contain;
  transition: all 0.35s ease-in;
}

.footer a img {
  width: 20%;
}

.speaker-picture img:hover {
  transform: scale(1.2);
}

.speaker-info {
  font-family: 'Lato', sans-serif;
  font-style: normal;
  margin: 24px;
}

.speaker-name {
  font-weight: bold;
  font-size: 20px;
}

.speaker-job {
  font-style: italic;
  color: #ec5242;
  font-weight: bolder;
  margin-top: 12px;
}

.speaker-info hr {
  margin-top: 12px;
  margin-bottom: 12px;
  margin-left: 0;
  width: 30px;
  border-bottom: 3px solid #d3d3d3;
}

.about-speaker {
  font-size: medium;
  font-weight: bolder;
  color: #5e5e5e;
}

/* Partners */

.partners {
  display: block;
  width: 100%;
  background-color: #2d2d2d;
}

.partner-title {
  font-family: 'Lato', sans-serif;
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  padding-top: 24px;
  padding-bottom: 10px;
  color: #fff;
}

.partners-list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
  padding: 40px;
}

/* Footer */

.footer {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 12px;
  padding: 24px;
}

.footer-desc {
  font-family: 'Lato', sans-serif;
  color: #5e5e5e;
  font-size: 12px;
  font-weight: bold;
  margin-top: 15px;
}

@media screen and (min-width: 768px) {
  body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: auto;
  }

  .header {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .header-top-bar {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: #2d2d2d;
    width: 100%;
  }

  .header-top-content {
    display: flex;
    justify-content: flex-end;
    list-style-type: none;
    background: none;
    margin-right: 3%;
  }

  .header-top-content i {
    padding-left: 24px;
    background: none;
    margin-top: 15px;
    filter: invert(100%);
  }

  .header-top-content a {
    text-decoration: none;
    font-family: 'Lato', sans-serif;
    font-weight: 500;
    line-height: 44px;
    color: #fff;
    padding: 24px;
  }

  .navigation {
    display: grid;
    grid-template-columns: 1fr 2fr;
    margin-top: 30px;
    margin-bottom: 30px;
  }

  .burger,
  .mobile-menu {
    display: none;
  }

  .navigation .logo {
    display: block;
    margin-left: 150px;
    transition: all 0.25s ease-in;
  }

  .logo:hover {
    transform: scale(2);
  }

  .logo a img {
    width: 20%;
  }

  .footer a img {
    width: 20%;
  }

  .desktop-menu {
    width: 100%;
    display: block;
    margin-top: 10px;
  }

  .desktop-menu ul {
    display: flex;
    width: 100%;
    list-style-type: none;
    justify-content: space-between;
    padding-right: 7%;
    padding-left: 20%;
  }

  .menu-link {
    text-decoration: none;
    color: #2d2d2d;
    text-align: center;
    font-family: 'Lato', sans-serif;
    font-weight: bold;
    padding: 7px;
    margin-right: 0;
  }

  .last-menu-link {
    text-decoration: none;
    margin-right: 0;
    padding-right: 10px;
    padding-left: 10px;
  }

  /* Headline Section */
  .headline {
    background-image: url(images/bg-desktop.png);
    background-size: cover;
    background-repeat: no-repeat;
  }

  .hello-title,
  h1.title,
  .info-desc,
  .date,
  .location {
    margin-left: 100px;
    width: 60%;
  }

  .hello-title {
    padding-bottom: 15px;
    font-size: 40px;
  }

  h1.title {
    font-size: 50px;
  }

  .location {
    font-size: 20px;
  }

  /* Program Section */
  .program-cards {
    display: flex;
    flex-direction: row;
    margin-top: 50px;
    margin-left: 80px;
    margin-right: 50px;
    gap: 1%;
  }

  .card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    justify-content: center;
    margin-left: -2.5%;
  }

  .button-1 {
    display: none;
  }

  .icon {
    padding-left: 40px;
  }

  .card-title {
    padding-left: 35px;
  }

  .link-1 {
    display: block;
    text-align: center;
    justify-content: center;
    font-family: 'Lato', sans-serif;
    font-size: large;
    padding: 50px;
    background: none;
    margin-top: 24px;
    color: #fff;
  }

  .link-1:hover {
    color: #ec5242;
    text-align: center;
    letter-spacing: 0.03em;
  }

  /* Speakers Section */
  .speakers-container {
    margin-top: 50px;
    margin-left: 100px;
    margin-right: 100px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: center;
  }

  .speaker-info {
    width: 50%;
  }

  .speaker-name {
    width: auto;
  }
}