body {
  @import url(https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap);
  margin: 0;
  padding: 0;
  background-color: #def2f1;
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #2b7a78;
  padding: 10px 20px;
  position: relative;
}

.nav-logo a {
  display: flex;
  align-items: center;
  color: #def2f1;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  transition: color 0.3s;
}

.nav-logo img {
  width: 60px;
  height: 60px;
  margin-right: 10px;
}

.nav-logo a:hover {
  color: #17252a;
}

.nav-menu {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin-left: 20px;
  position: relative;
}

.nav-item a {
  color: #feffff;
  text-decoration: none;
  padding: 10px 20px;
  display: block;
  transition: color 0.3s, background-color 0.3s, transform 0.3s;
}

.nav-item a:hover {
  color: #17252a;
  background-color: #def2f1;
  border-radius: 5px;
  transform: scale(1.1); 
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #2b7a78;
  min-width: 160px;
  box-shadow: 0 8px 16px #2b7a78;
  z-index: 1;
  border-radius: 5px;
  opacity: 0;
  transition: opacity 0.3s;
}

.dropdown-content a {
  color: #17252a;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  transition: color 0.3s, background-color 0.3s;
}

.dropdown-content a:hover {
  background-color: #def2f1;
  color: #17252a; 
}

.dropdown:hover .dropdown-content {
  display: block;
  opacity: 1;
}

.dropdown-content a:first-child {
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
}

.dropdown-content a:last-child {
  border-bottom-left-radius: 5px;
  border-bottom-right-radius: 5px;
}

.dropdown-items {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.dropdown-items span {
  background-color: #17252a;
  border-radius: 2px;
  display: block;
  height: 3px;
  margin: 5px 0;
  width: 25px;
  transition: all 0.3s;
}


@media (max-width: 768px) {
  .nav-menu {
      display: none;
      flex-direction: column;
      width: 100%;
      position: absolute;
      top: 50px;
      left: 0;
      background-color: #2b7a78;
      padding: 0;
  }

  .nav-menu.active {
      display: flex;
  }

  .nav-item {
      margin-left: 30px;
  }

  .nav-item a {
      padding: 10px;
      border-top: 1px solid #2b7a78;
  }

  .dropdown-items {
      display: flex;
}
}

* theme change */
body {
  transition: background-color 0.5s;
}
.dark-theme {
  background-color: #17252a;
  color: #fff;
}
.light-theme {
  background-color: #def2f1;
  color: #333;
}
.h1dark{
  color: #def2f1;
}
.h1light{
  color: #17252a;
}
.theme-changer {
  position: fixed;
  top: 10px;
  right: 10px;
  z-index: 1;
  cursor: pointer;
}
#theme-icon {
  width: 30px;
  height: 30px;
  transition: transform 0.5s;
}
#theme-icon:hover {
  transform: scale(1.1);
}
#dark-themeheader{
  color: #def2f1;
}
#light-themeheader{
  color: #17252a;
}
header {
  padding: 20px;
  text-align: center;
  margin-top: px;
  width: 100%;
  height: 30vh;
  background-size: cover;
  background-position: center;
}
.h1 {
  margin-top: 100px;
  font-size: 2em;
  text-align: center;
}
section {
  padding: 20px;
  border-bottom: 1px solid #def2f1;
  animation: fade-in 2s; 
}
h3 {
  color: #2b7a78;
  text-align: center;
  font-size: 1.5em;
  animation: bounce-in 2s; 
}
.content, .cardscont {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 20px;
  border-radius: 10px;
  background-color: #3aafa9;
}
.text, .cards {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  color: #3aafa9;
  gap: 20px;
}
.text ul, .cards ul {
  list-style: none;
  padding: 0;
  display: contents;
}
.text ul li, .cards ul li {
  background-color:#def2f1;
  color: #3aafa9;
  margin: 15px;
  padding: 35px;
  border-radius: 10px;
  animation: fade-in 2s; 
  box-shadow: 0 4px 8px #2b7a78;
  transition: transform 0.3s, box-shadow 0.3s;
  text-align: center;
}
.text ul li:hover, .cards ul li:hover {
  transform: translateY(-5px);
  background-color: #def2f1;
  border: 2px solid #2b7a78 ;
}
@keyframes fade-in {
  from {
      opacity: 0;
  }
  to {
      opacity: 1;
  }
}

@keyframes bounce-in {
  from {
      transform: scale(0.5);
      opacity: 0;
  }
  to {
      transform: scale(1);
      opacity: 1;
  }
}

.row {
  display: flex;
  margin: 10px auto;
  padding: 19px;
  width: 65%;
  justify-content: space-around;
  border:#3aafa9 solid 2px;
  border-radius: 10px;
  transition: 1s ease-in-out;
  margin-top: 30px;
  color: #2b7a78;
}

.row:hover {
  border: #2b7a78 solid 3px;
}

.info {
  width: 70%;
}

.info h3 {
  margin: 10px 0;
  font-size: 25px;
  text-align: center;
}

.info p {
  font-size: 15px;
}


.tooltip {
  display: none;
  position: absolute;
  background-color: #17252a;
  color: #def2f1;
  padding: 5px;
  border-radius: 3px;
  bottom: 125%; 
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  z-index: 1;
}

.btn {
  position: relative;
  margin: 20px;
  height: 30px;
  width: 100px;
  background-color: #3aafa9;
  padding: 3px;
  border-radius: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
}




.btn a {
  list-style-type: none;
  text-decoration:none;
  font-size: 15px;
  color: #fff;
}

.btn:hover {
  background-color:#2b7a78;
}

@media (max-width: 768px) {
  .text, .cards {
    grid-template-columns: repeat(2, 1fr);
    justify-content: center;
  }

  .row {
    flex-direction: column;
    align-items: center;
  }

  .info {
    width: 100%;
  }

  .btn {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .text, .cards {
    grid-template-columns: 1fr;
  }

  header {
    height: 50vh;
  }

  h1 {
    font-size: 1.5em;
    margin-top: 50px;
  }

  h3 {
    font-size: 1em;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
  .btn a {
    font-size: 12px;
  }
}