.landing-container {
    width: 100vw;
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin-top: 10vh;
    background-color: var(--color-grey-500);
  }
  .landing {
    width: 1200px;
    height: 90vh;
    margin: 10vh auto 0 auto;
    display: flex;
  }
  .left-part, .right-part {
    width: 50vw;
    height: 60vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
  }
  .left-part {
    flex-direction: column;
    text-align: center;
    background-color: var(--color-grey-500);
  }
  .left-part h1 {
    font-size: 3.2rem;
    margin-bottom: 2rem;
    color: var(--color-orange-500);
    font-family: "Poppins", serif;
    font-weight: 900;
    font-style: italic;
    text-transform: uppercase;
    animation: anim 0.8s;
  }
  .left-part h2 {
    font-size: 2.4rem;
    margin-bottom: 2rem;
    color: var(--color-blue-300);
    font-family: "Poppins", serif;
    font-weight: 900;
    font-style: italic;
    animation: anim 1.5s 0.5s backwards; 
  }
  .left-part p {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-black-400);
    margin-bottom: 5rem;
    animation: anim 1.5s 1s backwards; 
    padding: 0 4rem;
  }
  .left-part .cta-button {
    padding: 1.6rem 2rem;
    background-color: var(--color-blue-500);
    color: var(--color-orange-500);
    border: none;
    border-radius: 5rem;
    cursor: pointer;
    text-transform: uppercase;
    transition: background-color 0.3s ease, transform 0.3s ease;
    text-decoration: none;
    font-family: "Poppins", serif;
    font-weight: 900;
    font-style: normal;
    font-size: 2rem;
    animation: anim 1.5s 1.5s backwards; 
  }
  .left-part .cta-button:hover {
    background-color: var(--color-blue-700);
    transform: translateY(-3px);
  }
  .left-part .icon-text {
    position: absolute;
    right: 1%;
    bottom: 25%;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 2rem;
    color: var(--color-orange-500);
    animation: anim 1.5s 1.8s backwards; 
  }
  .right-part {
    background-color: var(--color-grey-500);
  }
  .right-part img {
    max-width: 100%;
    height: auto;
  }
  #canvas {
    width: 600px;
    height: 400px;
    aspect-ratio: 3/2;
}
@keyframes anim {
  0% {
      opacity: 0;
  }
  100% {
      opacity: 1;
  }
}
/* SPEECH */
#speech-container h1 { 
    text-align: center;
    padding: 20px;
    color: var(--color-blue-500);
}
#speech-container {
    max-width: 1200px;
    margin: 10vh auto;
    padding: 10px;
}
.btn {
    cursor: pointer;
    background-color: darkblue;
    border: 0;
    border-radius: 5px;
    color: aliceblue;
    font-size: 2rem;
    padding: 8px;
}
.btn:active {
    transform: scale(0.98);
}
.btn:focus, select:focus {
    outline: 0;
}
.btn-toggle {
    transform: translate(-2000px, 0);
}

.text-box {
    width: 70%;
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -800px);
    background-color: #333;
    color: #fff;
    padding: 20px;
    border-radius: 5px;
    transition: all 1s ease-in-out;
}
.text-box textarea {
    border: 1px #dadada solid;
    border-radius: 4px;
    font-size: 16px;
    padding: 8px;
    margin: 15px 0;
    width: 100%;
    height: 150px;
}
.text-box .btn {
    width: 100%;
}
.text-box .close {
    float: right;
    text-align: right;
    cursor: pointer;
} 
main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}
.box {
    box-shadow:  0 2px 10px rgba(0,0,0,0.2);
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: box-shadow 0.2s ease-out;
    background-color: var(--color-grey-400);
}
.box.active {
    box-shadow: 0 0 10px 5px var(--color-blue-500);
}
.box img{
    width: 100%;
    object-fit: cover;
    height: 200px;
}
.box .info {
    background-color: var(--color-blue-500);
    color: var(--color-orange-500);
    font-size: 1.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin: 0;
    padding: 10px;
    text-align: center;
    height: 100%;
    font-family: "Poppins", serif;
    font-weight: 700;
    font-style: normal;
}
/* Quiz */
.quiz-section {
  max-width: 1200px;
  width: 100%;
  height: auto;
  margin: 0 auto 10rem auto; 
  display: flex;
  justify-content: center; 
  align-items: center; 
  padding: 20px; 
}
.quiz-container {
  background-color: var(--color-blue-500);
  border-radius: 10px;
  box-shadow: 0 0 10px 2px rgba(100, 100, 100, 0.1);
  width: 600px;
  overflow: hidden;
  align-items: center;
  justify-content: center;
}
.quiz-header {
  padding: 4rem;
}
.quiz-container h2 {
  padding: 1rem;
  text-align: center;
  margin: 0;
  font-size: 2.6rem;
  color: var(--color-orange-500);
  font-family: "Poppins", serif;
  font-weight: 500;
  font-style: normal;
}
.quiz-container ul {
  list-style-type: none;
  padding: 0;  
}
ul li {
  font-size: 2rem;
  margin: 1rem;
  color: var(--color-grey-500); 
}
ul li label {
  cursor: pointer;  
}
input[type="radio"] {
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%; 
  outline: none;
  cursor: pointer;
  background-color: var(--color-orange-500);
}
input[type="radio"]:checked {
  background-color: var(--color-grey-500); 
}
.quiz-container button {
  background-color: var(--color-orange-500);
  color: var(--color-blue-500);
  border: none;
  display: block;
  width: 100%;
  cursor: pointer;
  font-size: 2.6rem;
  font-family: inherit;
  padding: 1.3rem;
  font-family: "Poppins", serif;
  font-weight: 900;
  font-style: normal;
  text-transform: uppercase;
}
.quiz-container button:hover {
  background-color: var(--color-orange-600);
}
.quiz-container button:focus {
  outline: none;
  background-color: var(--color-orange-500);
}
#question-counter {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: var(--color-blue-500);
  color: var(--color-orange-500);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 2rem;
  transition: opacity 0.3s ease-in-out; 
  font-family: "Poppins", serif;
  font-weight: 900;
  font-style: normal;
  text-transform: uppercase;
}
.hidden {
  display: none;
}
/* NEXT LECTURE */
.next-module {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .card {
    width: 100%;
    max-width: 600px;
    background: var(--color-grey-500);
    border-radius: 10px;
    overflow: hidden;
  }
  .card-image {
    width: 100%;
    display: block;
    height: auto;
  }
  .card-title {
    font-size: 2.6rem;
    margin: 15px 20px;
    text-align: left;
    color: var(--color-orange-500);
    font-family: "Poppins", serif;
    font-weight: 900;
    font-style: italic;
    text-transform: uppercase;
  }
  .info-row {
    display: flex;
    align-items: center;
    margin: 0 20px 10px;
  }
  .info-icon {
    width: 100px;
    height: 100px;
    margin-right: 10px;
  }
  
  .info-heading {
    font-size: 2rem;
    color: var(--color-blue-400);
    font-family: "Poppins", serif;
    font-weight: 900;
    font-style: italic;
  }
  
  .card-description {
    margin: 10px 20px 20px;
    font-size: 1.6rem;
    color: var(--color-black-500);
    text-align: left;
  }
  .next-module-button {
    padding: 1.6rem 2rem;
    margin: 4rem 0;
    background-color: var(--color-blue-500);
    color: var(--color-orange-500);
    border: none;
    border-radius: 5rem;
    cursor: pointer;
    text-transform: uppercase;
    transition: background-color 0.3s ease, transform 0.3s ease;
    text-decoration: none;
    font-family: "Poppins", serif;
    font-weight: 900;
    font-style: normal;
    font-size: 2rem;
  }
  .next-module-button:hover {
    background-color: var(--color-blue-700);
    transform: translateY(-3px);
  }
  .next-module-button:active {
    transform: translateY(1px);
  }
/* Responsive */
@media (max-width: 1250px) {
    .landing-container {
        
        margin-top: 0;
      }
    .landing {
        flex-direction: column;
        width: 100vw;
        height: auto;
      }

      .right-part {
        width: 100vw;
        height: 45vh;
        order: -1;
      }
      #canvas {
        width: auto;
        height: 30vh;
        aspect-ratio: 3/2;
        order: -1;
      }
      .left-part {
        width: 100vw;
        height: 45vh;
        order: 0;
      }
      .left-part .icon-text {
        right: 20%;
        bottom: 20%;
      }
      .quiz-container {
        max-width: 400px;
      }
      .next-module {
        max-width: 400px;
      }
}
@media (max-width: 1100px) {
    .left-part .icon-text {
        right: 10%;
        bottom: 25%;
      }
    main {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (max-width: 768px) {
    main {
        grid-template-columns: repeat(2, 1fr);
    }
    .quiz-section {
        padding: 15px;
    }
    .card-title {
        font-size: 2.6rem;
      }
      .info-heading {
        font-size: 2rem;
      }
      .card-description {
        font-size: 2rem;
      }
}
@media (max-width: 500px) {
    .left-part .icon-text {
        display: none;
      }
    .left-part h1,
    .left-part h2 {
      padding: 0 2rem;
    } 
    .left-part h1 {
      font-size: 2.6rem;
    }
    .left-part h2 {
      font-size: 2rem;
    }
    main {
        grid-template-columns: 1fr;
    }
    .quiz-section {
        padding: 10px;
    }
    .quiz-container {
        max-width: 300px;
      }
      .next-module {
        max-width: 300px;
      }
}