.course-header {  
    position: absolute;  
    width: 100%;  
    height: 70vh;  
    display: flex;  
    align-items: center;  
    justify-content: center;  
    z-index: -1;
}  
.course-content {  
    display: flex;  
    margin: 20px auto;  
    max-width: 1200px;  
}  

.chapter-right h2{
    margin-top: 0;
}

.course-left {  
    flex: 1;  
    display: flex;  
    align-items: center;  
    justify-content: center;  
}  

.course-left img {  
    max-width: 90%;  
    border-radius: 10px;  
    box-shadow: 0 0px 10px rgba(255, 255, 255, 0.5);  
}  

.course-right {  
    flex: 2;  
    padding: 20px;  
    border-radius: 10px;  
    margin-left: 20px;  
    color: #fff;  
}  

.course-right h1 {  
    font-size: 2.5rem;  
    margin-bottom: 10px;  
}  

.course-right p {  
    margin: 10px 0;  
    text-align: justify;
}  

.enquire-now-btn {  
    padding: 10px 20px;  
    font-size: 1rem;  
    color: #fff;  
    background: #e50914;  
    border: none;  
    border-radius: 5px;  
    cursor: pointer;  
    margin-top: 20px;  
    transition: background 0.3s ease;  
}  

.enquire-now-btn:hover {  
    background: #d40813;  
}  
.chapter-list {
    width: 80%;
    margin: 10px auto;
    margin-top: 200px;
    color: #000;
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 15px;
}

.chapter-left{
    flex: 1;
}

.chapter-left img{
    width: 100%;
}

.chapter {
    margin-bottom: 15px;
    border: 1px solid #ddd;
    padding: 10px;
    border-radius: 5px;
    background-color: #f9f9f9;
}

.chapter-name {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    margin: 0;
}

.toggle-icon {
    font-size: 20px;
    margin-left: 10px;
    transition: transform 0.3s;
}

.toggle-icon.expanded {
    transform: rotate(45deg);
}

.topics-list {
    margin-top: 10px;
    padding-left: 20px;
    border-left: 2px solid #ccc;
    display: none;
}

.topics-list ul {
    list-style-type: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.topics-list li {
    background: #ccc;
    border-radius: 5px;
}
.topics-list li p{
    margin: 0;
    padding: 5px 20px;
    display: flex;
    gap: 10px;
    align-items: center;
}

.topics-list li p i{
    color: #fff;
    background: var(--third-color);
    padding: 5px;
    border-radius: 5px;
}

.suggestion{
    width: 80%;
    margin: 50px auto;
}

.suggestion h2{
    text-align: center;
    font-size: 3rem;
}

.suggested-courses{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.suggested-course{
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    text-align: center;
}

.suggested-course h4{
    padding: 0 20px;
    font-size: 1rem;
}

.suggested-course img{
    width: 100%;
    height: 200px;
    border-radius: 8px 8px 0 0;
}

.suggested-course a{
    background: var(--main-color);
    color: #000;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
}

/* Popup Styles */

.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.popup-content {
    background-color: var(--third-color);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    width: 600px;
    max-width: 90%;
}

.close-btn {
    display: flex;
    justify-content: flex-end;
    font-size: 2rem;
    cursor: pointer;
    color: var(--main-color);
}

.close-btn:hover {
    color: #666;
}

.popup-content h2 {
    margin-top: 0;
    font-weight: bold;
    font-size: 24px;
    color: #fff;
    text-align: center;
}

.popup-content form {
    margin-top: 20px;
}

.popup-grid{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.form-group{
    display: grid;
    margin-top: 15px;
}

.form-group input{
    padding: 10px;
    border-radius: 8px;
    border: none;
    outline-color: var(--main-color);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

#contact-number{
    width: 100%;
}

.form-group label{
    color: var(--main-color);
    padding: 5px 0;
    font-size: 1.1rem;
    display: flex;
    gap: 10px;
    align-items: center;
}

.popup-content button[type="submit"] {
    margin-top: 20px;
    width: 100%;
    background: #a3b523;
    color: #000000;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    letter-spacing: 1px;
    font-size: 1rem;
    transition: all 0.3s ease-in-out;
}

.popup-content button[type="submit"]:hover {
    background: #b8cf08;
}

.certificates{
    background: #fff;
    padding: 20px;
}
.certificates h2{
    text-align: center;
}
.certificate-container{
    width: 80%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.certificate{
    border: 1px solid #ccc;
    border-radius: 20px;
}

.cert-img{
    width: 100%;
    height: 300px;
    border-radius: 20px;
}
.cert-img img{
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 20px;
}

/* Responsive Styles */

@media (max-width: 1024px) {
    .course-header{
        height: 80vh;  
    }
    .course-content {
        width: 90%;
    }
    .chapter-list{
        margin-top: 120px;
    }
    .suggested-courses {
        grid-template-columns: repeat(3, 1fr);
    }
    .suggestion h2 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .popup-content {
        width: 80%;
    }
    .course-right p {
        font-size: 0.9rem;
    }
    .course-header {
        height: 100vh;
    }
    .course-content {
        width: 80%;
        display: block;
    }
    .course-left img {
        max-width: 60%;
    }
    .course-grid{
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
    .popup-content{
        margin-top: -80px;
    }
    .chapter-list{
        grid-template-columns: repeat(1, 1fr);
    }
    .suggested-courses {
        grid-template-columns: repeat(2, 1fr);
    }
    .certificate-container{
        grid-template-columns: repeat(1, 1fr);
    }
}

@media (max-width: 500px) {
    .popup-content {
        width: 80%;
    }
    .course-content{
        width: 100%;
        margin-top: 120px;
    }
    .course-right{
        margin-left: 0;
    }
    .course-right h1 {
        margin-top: 0;
        font-size: 1.5rem;
    }
    .chapter-list {
        margin-top: 0px;
    }
    .suggestion h2 {
        font-size: 2rem;
    }
    .suggested-courses {
        grid-template-columns: repeat(1, 1fr);
    }
    .certificate-container{
        grid-template-columns: repeat(1, 1fr);
    }
    .topics-list ul {
        grid-template-columns: repeat(1, 1fr);
        gap: 10px;
}
}