body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}


.custom-nav {
    background-color: #2c3e50;
    display: flex;
    justify-content: space-between; 
    align-items: center;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.custom-nav .logo {
    margin-left: 20px; 
    display: flex;
    align-items: center;
}

.custom-nav .logo img {
    height: 50px;
    border-radius: 5px;
    margin-right: 10px; 
}

.custom-nav .company-name {
    color: #ecf0f1;
    font-size: 20px;
    font-weight: bold;
}

.custom-nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center; 
    flex-grow: 1; 
}

.custom-nav ul li {
    position: relative;
}

.custom-nav ul li a {
    display: block;
    color: #ecf0f1;
    text-align: center;
    padding: 15px 20px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.custom-nav ul li a:hover {
    background-color: #34495e;
    color: #3498db;
}

.custom-nav ul li ul {
    display: none;
    position: absolute;
    background-color: #34495e;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    z-index: 1;
    border-radius: 5px;
    overflow: hidden;
    justify-content: flex-start; 
    flex-direction: column;
}

.custom-nav ul li ul li {
    float: none;
}

.custom-nav ul li ul li a {
    color: #ecf0f1;
    padding: 12px 20px;
    text-align: left;
    transition: background-color 0.3s ease;
}

.custom-nav ul li ul li a:hover {
    background-color: #2c3e50;
}

.custom-nav ul li:hover ul {
    display: block;
}


.slider {
    position: relative;
    height: 288px; 
    
    overflow: hidden;
    margin: auto;
}

.slider img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    position: absolute;
    opacity: 0;
    transition: opacity 1s ease;
}

.slider img.active {
    opacity: 1;
}


.about {
    padding: 80px 10%;
    background-color: #ecf0f1;
    text-align: left;
}

.about .company-logo {
    margin-bottom: 20px;
}
.about .company-logo img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}

.about h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
    text-align: center;
}

.about p {
    font-size: 18px;
    color: #000000;
    line-height: 1.6;
}


.mission-vision {
    padding: 80px 0;
    
}
.mission-vision h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 40px;
    text-align: center;
    margin-top: 40px;
}
.mission-vision-images {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    
    margin-top: 30px;
}
.mission-vision-images .image {
    flex: 1;
}
.mission-vision-images .image img {
    width: 70%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.mission-vision-texts {
    display: flex;
    justify-content: space-between;
    gap: 40px;
}
.mission-text,
.vision-text {
    flex: 1;
}
.mission-text h3,
.vision-text h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 10px;
}
.mission-text p,
.vision-text p {
    font-size: 16px;
    color: #7f8c8d;
    line-height: 1.6;
}


.services {
    padding: 80px 10%;
    text-align: center;
}

.services h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 40px;
}

.service-item {
    display: inline-block;
    height: 230px;
    width: 400px;
    margin: 1.5%;
    padding: 20px;
    background-color: #ecf0f1;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateY(-10px);
}

.service-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.service-item h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 10px;
}

.service-item p {
    font-size: 16px;
    color: #7f8c8d;
    line-height: 1.6;
}


.contact {
    padding: 80px 10%;
    background-color: #2c3e50;
    text-align: center;
}

.contact h2 {
    font-size: 32px;
    color: #ecf0f1;
    margin-bottom: 20px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    color: #bdc3c7;
    font-size: 18px;
}

.contact-info p {
    margin: 0;
    display: flex;
    align-items: center;
}

.contact-info i {
    margin-right: 10px;
    font-size: 24px;
}


footer {
    padding: 20px 0;
    background-color: #1a252f;
    text-align: center;
    color: #bdc3c7;
    font-size: 14px;
}




.about-content {
    padding: 80px 10%;
    background-color: #ecf0f1;
    border-bottom: 1px solid #bdc3c7;
}

.about-content:last-child {
    border-bottom: none;
}

.about-content h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
    text-align: center;
    position: relative;
}

.about-content h2::after {
    content: "";
    display: block;
    width: 80px;
    height: 3px;
    background-color: #3498db;
    margin: 10px auto 0;
}


.company-intro {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.company-intro .text {
    flex: 1;
}

.company-intro .image {
    flex: 1;
    text-align: center;
}

.company-intro .image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.about-content p {
    font-size: 18px;
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
    text-align: justify;
}


.video-preview {
    position: relative;
    margin-bottom: 20px;
}

#preview-img {
    display: block;
    width: 600px;
    height: 400px;
    border-radius: 10px;
    cursor: pointer;
}

#intro-video {
    display: none;
    border-radius: 10px;
}


.qualifications-lists {
    list-style-type: disc;
    padding-left: 20px;
    color: #7f8c8d;
    font-size: 18px;
    line-height: 1.6;
    margin-left: 5%;
}


.qualifications-list {
    list-style-type: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px; 
}

.qualifications-list li {
    background-color: #fff;
    border-radius: 8px; 
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); 
    padding: 15px; 
    transition: transform 0.3s ease;
    text-align: center;
}

.qualifications-list li:hover {
    transform: translateY(-5px); 
}

.qualifications-list img {
    width: 80%; 
    border-radius: 5px;
    margin-bottom: 8px; 
}

.qualifications-list h3 {
    font-size: 18px; 
    color: #2c3e50;
    margin-bottom: 0;
}



.advantages-list {
    list-style-type: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantages-list li {
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    transition: transform 0.3s ease;
}

.advantages-list li:hover {
    transform: translateY(-10px);
}

.advantages-list h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 10px;
}

.advantages-list p {
    font-size: 18px;
    color: #7f8c8d;
    line-height: 1.6;
}





.service-overview {
    padding: 80px 0;
    background-color: #ecf0f1;
    text-align: center;
}

.service-overview h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.service-overview h2::after {
    content: "";
    display: block;
    width: 80px;
    height: 3px;
    background-color: #3498db;
    margin: 10px auto 0;
}

.service-overview p {
    font-size: 18px;
    color: #7f8c8d;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}


.service-detail {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.service-detail.reverse .image-text-wrapper {
    flex-direction: row-reverse;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.image-text-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.service-image {
    flex: 1;
}

.service-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.service-text {
    flex: 1;
}

.service-text h3 {
    font-size: 24px;
    color: #2c3e50;
    margin-bottom: 10px;
}

.service-text p {
    font-size: 16px;
    color: #7f8c8d;
    line-height: 1.6;
}


.contact-page.contact-overview {
    padding: 80px 0;
    background-color: #ecf0f1;
    text-align: center;
}

.contact-page.contact-overview h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.contact-page.contact-overview p {
    font-size: 18px;
    color: #7f8c8d;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}


.contact-page.contact-overview {
    padding: 80px 0;
    background-color: #ecf0f1;
    text-align: center;
}

.contact-page.contact-overview h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.contact-page.contact-overview p {
    font-size: 18px;
    color: #7f8c8d;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}


.contact-page.contact-details {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.contact-page .contact-info-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.contact-page .contact-info {
    display: flex;
    align-items: flex-start; 
    width: 45%;
    margin-bottom: 20px;
}

.contact-page .contact-info i {
    font-size: 32px;
    color: #3498db;
    margin-right: 20px;
    margin-top: 3px; 
}

.contact-page .contact-info h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 5px;
    margin-top: 0; 
}

.contact-page .contact-info p {
    font-size: 16px;
    color: #7f8c8d;
    line-height: 1.6;
    margin: 0;
}

.contact-page .contact-info p a {
    color: #3498db;
    text-decoration: none;
}

.contact-page .contact-info p a:hover {
    text-decoration: underline;
}

.contact-page .map-container {
    width: 100%;
    height: 400px;
    border-radius: 10px;
    overflow: hidden;
}

.contact-page .map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}


.customers-partners-overview {
    padding: 80px 0;
    background-color: #ecf0f1;
    text-align: center;
}

.customers-partners-overview h2 {
    font-size: 32px;
    color: #2c3e50;
    margin-bottom: 20px;
}

.customers-partners-overview p {
    font-size: 18px;
    color: #7f8c8d;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}


.customers-partners-list {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.logo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    justify-items: center;
}

.logo-item {
    width: 200px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.logo-item:hover {
    transform: translateY(-5px);
}

.logo-item img {
    max-width: 80%;
    max-height: 80%;
}