@import url('https://fonts.googleapis.com/css2?family=Domine&family=Lato:ital,wght@0,100;1,100&display=swap');

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

body {
  font-family: 'lato ', sans-serif;
  margin: 0;
  padding: 0;
  position: relative;
}

/* Creating the hamburger button  */

header {
  background-color: whitesmoke;
}

.home-header {
  background-image: url('https://www.blogenium.com/wp-content/uploads/2019/08/blogenium-cool-technologies-wallpapers-15.jpg');
  background-repeat: no-repeat;
  background-size: cover;
}

.about-header {
  background-image: url('https://catherineasquithgallery.com/uploads/posts/2021-03/1614791986_122-p-fon-dlya-delovoi-prezentatsii-129.jpg');
  background-repeat: no-repeat;
  background-size: cover;
}

header .nav {
  display: none;
}

header .nav-container {
  display: none;
}

.toggle-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  top: 15px;
  left: 25px;
  width: 30px;
  height: 21px;
}

.toggle-btn .bar {
  width: 100%;
  height: 4px;
  background-color: black;
  border-radius: 10px;
}

#hamburger-menu {
  display: none;
  width: 100%;
  height: 100vh;
  font-weight: 400;
  font-family: sans-serif;
  position: fixed;
  background-color: white;
}

.hamburger-menu {
  display: flex;
  flex-direction: column;
  list-style: none;
  gap: 40px;
  padding: 40px;
}

.hamburger-menu li > a {
  text-decoration: none;
  color: black;
  font-size: 30px;
}

.close-btn {
  float: right;
  font-size: 40px;
  margin: 20px;
}

/* The home page of the project  */

#home {
  width: 100%;
  text-align: center;
  font-weight: 600;
  background-color: whitesmoke;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-image: url('https://www.blogenium.com/wp-content/uploads/2019/08/blogenium-cool-technologies-wallpapers-15.jpg');
  background-repeat: no-repeat;
  background-size: cover;
}

#home h3 {
  color: rgb(238, 7, 7);
  font-weight: 700;
  margin-top: 60px;
}

#home h1 {
  color: rgba(247, 12, 12, 0.991);
  font-size: 40px;
  font-weight: 700;
}

#home .course-description {
  font-weight: 700;
  margin: 20px 25px;
  padding: 15px;
  border: 5px solid white;
  line-height: 27px;
}

#home .time {
  font-size: 30px;
  color: #000;
  font-weight: 400;
  font-family: sans-serif;
}

#home .course-location {
  font-size: 20px;
}

/* The about page of the project. Main program  */

#about .main-program {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #282b32;
  color: whitesmoke;
}

.main-program h4 {
  font-size: 22px;
  margin: 30px;
  margin-bottom: 10px;
  font-family: sans-serif;
}

.main-program .flex-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
}

.main-program .programs {
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 400;
  gap: 40px;
  padding: 10px 0;
  margin: 10px;
  background-color: rgba(71, 72, 73, 0.502);
  width: 100%;
}

.programs:hover {
  border: 3px solid white;
}

.programs .align {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  max-width: 35%;
  padding-left: 25px;
}

.programs p {
  max-width: 55%;
  line-height: 25px;
}

.main-program h5 {
  font-size: 18px;
  color: rgb(230, 127, 10);
}

.main-program .join {
  color: white;
  padding: 20px 35px;
  margin: 25px;
  background-color: #ab3d03;
  width: 300px;
  text-align: center;
}

.main-program .all-work {
  display: none;
}

/* Featured Speakers section  */

#featured-speakers {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 50px;
}

#featured-speakers h4 {
  text-align: center;
  font-size: 22px;
  font-family: sans-serif;
  font-weight: 400;
  margin: 25px;
  text-shadow: 0.5px 0 black;
}

#featured-speakers .about-speakers {
  display: grid;
  grid-template: auto auto auto auto / auto auto;
  gap: 10px;
  column-gap: 25px;
  font-weight: 400;
  justify-content: center;
  align-items: center;
}

.about-speakers .face {
  grid-area: 1 / 1 / 5 / 2;
}

.about-speakers .pink {
  color: rgb(230, 10, 10);
}

.line {
  height: 2px;
  width: 30px;
  background-color: #d5d3d3;
  border-radius: 10px;
}

.partners {
  display: none;
}

/* styling the about html file  */

#home-about {
  width: 100%;
  text-align: center;
  font-weight: 600;
  background-color: white;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
}

#home-about #about-us {
  background-color: whitesmoke;
  background-image: url('https://catherineasquithgallery.com/uploads/posts/2021-03/1614791986_122-p-fon-dlya-delovoi-prezentatsii-129.jpg');
  background-repeat: no-repeat;
  background-size: cover;
}

#home-about .hello {
  color: rgb(238, 7, 7);
  font-weight: 700;
}

#home-about h1 {
  color: rgba(247, 12, 12, 0.991);
  font-size: 40px;
  font-weight: 700;
  font-family: sans-serif;
  margin-top: 100px;
}

#home-about .about-course {
  margin: 35px;
  padding: 25px 15px;
  border-radius: 5px;
  line-height: 28px;
  background-color: white;
}

#home-about .about-course-dskt {
  display: none;
}

#home-about .contact {
  margin: 10px 80px;
  line-height: 25px;
}

.contact strong {
  font-family: sans-serif;
}

#about-logo h3 {
  font-family: sans-serif;
  font-weight: 400;
  font-size: 30px;
  margin: 30px 100px;
  padding: 10px;
}

#about-logo .logo-mob {
  margin: 0 70px;
  line-height: 26px;
}

#about-logo .logo-dskt {
  display: none;
}

#about-time {
  padding: 40px;
}

#about-time img {
  border: 1px solid grey;
  width: 100%;
  padding: 30px 50px;
}

#past-courses {
  border-top: 1px solid grey;
}

#past-courses h3 {
  font-family: sans-serif;
  font-size: 22px;
  margin: 25px 50px;
}

#past-courses p {
  margin: 25px 40px;
}

#past-courses img {
  width: 80%;
  margin-bottom: 20px;
  height: 200px;
}

.overlay {
  position: absolute;
  background-color: rgba(247, 12, 12, 0.6);
  top: 0%;
  left: 10%;
  height: 45%;
  width: 80%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
}

.overlay-york {
  top: 50%;
  height: 45%;
}

#footer-about p {
  color: black;
  font-family: sans-serif;
  font-weight: 400;
}

#past-courses .overlay p {
  margin: 10px;
}

#home-about .partners {
  display: grid;
  grid-template: 70px 10px 100px 100px / repeat(3, auto);
  text-align: center;
  justify-content: space-around;
  align-items: center;
  background-color: #414246;
  margin: 20px 0;
}

.partners h2 {
  color: white;
  font-size: 28px;
}

.partners .partner-logo {
  width: 100px;
}

.partners .item0 {
  grid-area: 1 / 1 / 2 / 4;
}

.partners .item1 {
  grid-area: 2 / 1 / 3 / 4;
  margin: 0 auto;
}

.partners .item6 {
  grid-area: 4 / 3 / 5 / 4;
}

#footer {
  display: flex;
  font-weight: 400;
  gap: 30px;
  height: 15vh;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-bottom: 20px;
  padding: 50px;
}

#footer img {
  width: 30%;
}

#footer-about {
  display: flex;
  font-weight: 600;
  gap: 30px;
  height: 15vh;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-bottom: 20px;
  padding-left: 50px;
}

#footer-about img {
  width: 25%;
}

/* underline for all elements   */
.underline {
  width: 50px;
  height: 2px;
  background-color: red;
  margin: 10px auto;
}

.images {
  position: relative;
}

@media (min-width: 768px) {
  /* Header of the website  */

  .toggle-btn {
    display: none;
  }

  header .nav {
    display: flex;
    justify-content: end;
    align-items: center;
    list-style: none;
    background-color: #414246;
    gap: 20px;
    padding: 10px;
    font-family: sans-serif;
    font-weight: 400;
    padding-right: 15%;
  }

  .nav li a {
    text-decoration: none;
    color: white;
  }

  header .nav-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 80px;
    background-color: white;
  }

  .nav-container #logo-link {
    width: 200px;
  }

  .nav-container #logo {
    width: 100%;
  }

  .nav-container .navbar {
    display: flex;
    list-style: none;
    justify-content: center;
    gap: 40px;
    font-weight: 400;
    font-family: sans-serif;
  }

  .navbar li > a {
    text-decoration: none;
    color: black;
    font-size: 15px;
  }

  .navbar li a:hover {
    color: #e67f0a;
  }

  .navbar .campaign {
    border: 1px solid red;
    padding: 8px 16px;
  }

  /* main section of the website  */

  #home {
    align-items: flex-start;
    font-family: sans-serif;
    padding-left: 150px;
    height: 70vh;
  }

  #home h3 {
    font-size: 24px;
  }

  #home h1 {
    font-size: 75px;
    text-align: left;
    padding-right: 140px;
  }

  #home .course-description {
    margin-right: 200px;
  }

  .main-program .flex-container {
    display: flex;
    flex-direction: row;
  }

  .flex-container .programs {
    text-align: center;
    flex-direction: column;
    width: 15%;
    height: 260px;
    gap: 0;
  }

  .programs .align {
    flex-direction: column;
    min-width: 0;
    max-width: 100%;
    height: 50%;
    padding: 0;
  }

  .programs p {
    max-width: 100%;
    min-width: 0;
    height: 60%;
    line-height: 22px;
  }

  .main-program .join {
    display: none;
  }

  .main-program .all-work {
    display: block;
    color: white;
    text-decoration: underline;
    margin: 70px;
  }

  /* About Featured Speakers  */

  #featured-speakers {
    display: grid;
    grid-template: 100px repeat(3, 1fr) / 1fr 1fr;
    padding: 0 200px;
  }

  #featured-speakers h4 {
    grid-area: 1 / 1 / 2 / 3;
    font-size: 35px;
  }

  .partners {
    display: grid;
    justify-content: space-evenly;
    align-items: center;
    grid-template: 80px 10px 100px / repeat(5, 100px);
    background-color: #414246;
    padding-bottom: 40px;
  }

  #footer img {
    width: 15%;
  }

  #footer p {
    color: black;
    font-family: sans-serif;
  }

  .partners .item0 {
    text-align: center;
    grid-area: 1 / 1 / 2 / 6;
  }

  .partners .item1 {
    grid-area: 2 / 1 / 3 / 6;
  }

  .partners .item6 {
    grid-area: 3 / 5 / 4 / 6;
  }

  #home-about {
    gap: 40px;
    font-family: sans-serif;
  }

  #home-about #about-us {
    padding: 100px;
  }

  #home-about h3 {
    font-size: 30px;
  }

  #home-about h1 {
    font-size: 70px;
  }

  #home-about .about-course {
    display: none;
  }

  #home-about .about-course-dskt {
    display: block;
    margin: 35px 200px;
    padding: 35px 25px;
    border-radius: 5px;
    line-height: 28px;
    background-color: white;
    font-weight: 400;
  }

  #home-about .contact {
    margin: 0 100px;
  }

  #home-about .contact strong {
    font-weight: bolder;
  }

  /* about the logo of the udemy website  */

  #about-logo h3 {
    font-size: 45px;
  }

  #about-logo .logo-mob {
    display: none;
  }

  #about-logo .logo-dskt {
    display: block;
    margin: 0 300px;
    line-height: 36px;
    font-weight: 400;
  }

  #about-time img {
    border: 1px solid grey;
    width: 60%;
    padding: 60px 100px;
  }

  /* about the last two courses of udemy */

  #past-courses img {
    width: 40%;
    height: 380px;
    margin: 10px;
  }

  .overlay {
    width: 40%;
    height: 94%;
    left: 9.1%;
    top: 2.6%;
  }

  .overlay-york {
    width: 40%;
    height: 94%;
    left: 50.9%;
    top: 2.6%;
  }

  #home-about .partners {
    display: none;
  }

  #footer-about {
    background-color: #2e2e2e;
    color: white;
    margin-top: 100px;
    height: 20vh;
    display: flex;
    align-items: center;
  }

  #footer-about img {
    width: 20%;
  }

  #footer-about p {
    color: white;
  }
}