/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Be Vietnam Pro', sans-serif;
    line-height: 1.6;
    color: #2D2D2D;
    background-color: #FFFFFF;
    padding-top: 80px; /* Add padding to account for fixed header */
}

.container {
    max-width: 1308px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    position: relative;
    height: 700px;
    background: url('images/header-bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    z-index: 3;
}

/* Sticky Navigation */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 306px;
    background: transparent;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

/* Header scroll effect */
.nav-container.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
    padding: 12px 306px;
}

.nav-container.scrolled .logo img {
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.header-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

/* Original nav-container styles are now in the sticky navigation above */

/* About Us Section */
.about-us-section {
    padding: 96px 0;
    background: #FFFFFF;
}

.about-us-content {
    display: flex;
    align-items: center;
    gap: 69px;
}

.about-us-text {
    flex: 1;
    max-width: 595px;
}

.about-us-header {
    margin-bottom: 22px;
}

.about-us-header .section-title {
    color: #FEC107;
    font-size: 15px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.about-us-header .section-subtitle {
    color: #2D2D2D;
    font-size: 36px;
    font-weight: 900;
    text-transform: uppercase;
    line-height: 1.39;
    letter-spacing: 3%;
}

.experience-text {
    font-size: 24px;
    font-weight: 700;
    color: #374151;
    margin-bottom: 22px;
}

.about-description {
    font-size: 16px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.265;
}

.about-us-image {
    flex: 1;
    position: relative;
}

.about-us-image .image-container {
    position: relative;
    width: 644px;
    height: 565px;
}

.about-us-image .image-bg {
    position: absolute;
    top: 0;
    left: 55px;
    width: 589px;
    height: 534px;
    background: #FEC107;
    z-index: 1;
}

.about-us-image .image-container img {
    position: absolute;
    top: 31px;
    left: 0;
    width: 594px;
    height: 534px;
    object-fit: cover;
    z-index: 2;
}

.about-us-image .founder-info {
    margin-top: 11px;
}

.about-us-image .founder-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: #2D2D2D;
    margin-bottom: 10px;
}

.about-us-image .founder-info p {
    font-size: 14px;
    font-weight: 300;
    color: #2D2D2D;
}

.logo img {
    width: 200px;
    height: 80px;
    object-fit: contain;
    filter: drop-shadow(1px 1px 1px rgba(0, 0, 0, 0.5));
}

.nav-menu {
    display: flex;
    gap: 24px;
    align-items: center;
    font-weight: bold;
}

.nav-menu a {
    color: #1D1D1D;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #FEC107;
}

.hotline-btn {
    background: #FEC107;
    color: #000;
    padding: 14px 34px;
    border-radius: 55px;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0px 4px 4px rgba(177, 177, 177, 0.25);
    cursor: pointer;
    transition: transform 0.3s ease;
    text-decoration: none;
}

.hotline-btn a {
    text-decoration: none;
    color: #000;
}

.hotline-btn:hover {
    transform: translateY(-2px);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 15px;
    font-weight: 700;
    text-transform: uppercase;
    color: #FEC107;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.section-subtitle {
    font-size: 36px;
    font-weight: 900;
    text-transform: uppercase;
    color: #2D2D2D;
    line-height: 1.39;
    letter-spacing: 3%;
}

/* Process Section */
.process-section {
    padding: 96px 0;
    background: #FFFFFF;
}

.process-content {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.process-header {
    width: 312px;
    flex-shrink: 0;
}

.process-header .section-title {
    color: #FEC107;
    font-size: 15px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.process-header .section-subtitle {
    color: #2D2D2D;
    font-size: 36px;
    font-weight: 900;
    text-transform: uppercase;
    line-height: 1.39;
    letter-spacing: 3%;
}

.process-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
}

.process-row {
    display: flex;
    gap: 20px;
    align-items: center;
}

.process-item {
    width: 312px;
    height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 15px;
    flex-shrink: 0;
}

.process-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.process-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: #2D2D2D;
    line-height: 1.6;
    letter-spacing: -0.8px;
}

.process-item p {
    font-size: 15px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.265;
}

/* Services Section */
.services-section {
    padding: 96px 0;
    background: #F9FAFB;
}

.services-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
}

.service-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    padding: 20px;
    width: calc(20% - 16px); /* 5 items per row, 20% each */
    min-width: 200px;
}

.service-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: #2D2D2D;
    line-height: 1.6;
    letter-spacing: -0.8px;
}

.service-item p {
    font-size: 15px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.265;
}

/* Testimonials Section */
.testimonials-section {
    padding: 96px 0;
    background: #FFF;
}

.testimonials-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: space-between;
}

.testimonial-item {
    background: #F9FAFB;
    padding: 36px 20px;
    text-align: center;
    border-radius: 8px;
    transition: transform 0.3s ease;
    width: calc(33.333% - 27px); /* 3 items per row, 33.333% each */
    min-width: 280px;
}

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

.testimonial-avatar {
    margin-bottom: 12px;
}

.avatar-circle {
    width: 60px;
    height: 60px;
    background: #FEC107;
    border-radius: 50%;
    margin: 0 auto;
    overflow: hidden;
}

.avatar-circle img {
    width: 100%;
}

.testimonial-item p {
    font-size: 15px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.4;
    margin-bottom: 12px;
    font-style: italic;
}

.testimonial-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: #2D2D2D;
    line-height: 1.6;
    letter-spacing: -0.8px;
}

/* About Section */
.about-section {
    padding: 96px 0;
    background: #FFFFFF;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 69px;
}

.about-text {
    flex: 1;
    max-width: 595px;
}

.about-header {
    margin-bottom: 22px;
}

.experience-text {
    font-size: 24px;
    font-weight: 700;
    color: #374151;
    margin-bottom: 22px;
}

.about-description {
    font-size: 16px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.4;
}

.about-image {
    flex: 1;
    position: relative;
}

.image-container {
    position: relative;
    width: 644px;
    height: 565px;
}

.image-bg {
    position: absolute;
    top: 0;
    left: 55px;
    width: 589px;
    height: 534px;
    background: #FEC107;
    z-index: 1;
}

.image-container img {
    position: absolute;
    top: 31px;
    left: 0;
    width: 594px;
    height: 534px;
    object-fit: cover;
    z-index: 2;
}

.founder-info {
    margin-top: 11px;
}

.founder-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: #2D2D2D;
    margin-bottom: 10px;
}

.founder-info p {
    font-size: 14px;
    font-weight: 300;
    color: #2D2D2D;
}

/* Commitment Section */
.commitment-section {
    padding: 96px 0;
    background: #F9FAFB;
}

.commitment-content {
    display: flex;
    align-items: center;
    gap: 69px;
}

.commitment-image {
    flex: 1;
    position: relative;
}

.commitment-text {
    flex: 1;
    max-width: 595px;
}

.commitment-header {
    margin-bottom: 22px;
}

.commitment-description {
    font-size: 15px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.265;
    margin-bottom: 24px;
}

.commitment-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.commitment-item {
    display: flex;
    gap: 4px;
    align-items: flex-start;
}

.commitment-label {
    font-size: 15px;
    font-weight: 600;
    color: #2D2D2D;
    white-space: nowrap;
}

.commitment-text {
    font-size: 16px;
    font-weight: 300;
    color: #2D2D2D;
    line-height: 1.265;
}

/* Gallery Section */
.gallery-section {
    padding: 96px 0;
    background: #F9FAFB;
}

.gallery-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: space-between;
}

.gallery-item {
    position: relative;
    height: 154px;
    overflow: hidden;
    border-radius: 8px;
    width: calc(25% - 12px); /* 4 items per row, 25% each */
    min-width: 250px;
}

.gallery-item.medium {
    height: auto;
}

.gallery-item.large {
    width: calc(50% - 8px); /* 2 items per row, 50% each */
    height: 320px;
}

.image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #D9D9D9;
    z-index: 1;
}

.gallery-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Footer Section */
.footer {
    background: #000;
    color: #FFF;
    padding: 96px 0;
    position: relative;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.footer-info {
    max-width: 595px;
}

.footer-title {
    font-family: 'Raleway', sans-serif;
    font-size: 15px;
    font-weight: 700;
    text-transform: uppercase;
    color: #FEC107;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.footer-subtitle {
    font-size: 36px;
    font-weight: 900;
    text-transform: uppercase;
    color: #FFF;
    line-height: 1.39;
    letter-spacing: 3%;
}

.footer-details {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    align-items: stretch;
}

.footer-item {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: calc(25% - 15px); /* 4 items per row, 25% each */
    min-width: 200px;
}

.footer-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: #FFF;
    line-height: 1.6;
    letter-spacing: -0.8px;
}

.footer-item p {
    font-size: 15px;
    font-weight: 400;
    color: #FFF;
    line-height: 1.265;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-social p {
    font-size: 12px;
    font-weight: 400;
    color: #FFF;
    line-height: 1.5;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-link {
    width: 50px;
    height: 50px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.social-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Background Image */
.bg-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/bg-image.jpg') no-repeat center center;
    background-size: cover;
    opacity: 0.1;
    z-index: -1;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .nav-container {
        padding: 16px 50px;
    }
    
    .nav-container.scrolled {
        padding: 12px 50px;
    }
    
    .about-content,
    .about-us-content,
    .commitment-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .image-container,
    .about-us-image .image-container {
        width: 100%;
        height: 400px;
    }
    
    .image-bg,
    .about-us-image .image-bg {
        left: 20px;
        width: calc(100% - 40px);
        height: calc(100% - 40px);
    }
    
    .image-container img,
    .about-us-image .image-container img {
        width: 100%;
        height: calc(100% - 40px);
        left: 0;
        top: 20px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .about-us-section {
        padding: 40px 0;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }
    
    .nav-container.scrolled {
        padding: 15px 20px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .section-subtitle,
    .about-us-header .section-subtitle {
        font-size: 24px;
    }
    
    .process-content {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }
    
    .process-header {
        width: 100%;
        text-align: center;
        align-items: center;
    }
    
    .process-list {
        width: 100%;
    }
    
    .process-row {
        flex-direction: column;
        gap: 20px;
    }
    
    .process-item {
        width: 100%;
        max-width: 400px;
    }
    
    .process-header .section-subtitle {
        font-size: 24px;
    }
    
    .services-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .service-item {
        width: 100%;
        min-width: 100%;
    }
    
    .testimonials-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .testimonial-item {
        width: 100%;
        min-width: 100%;
    }
    
    .gallery-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .gallery-item {
        width: 100%;
        min-width: 100%;
    }
    
    .gallery-item.large {
        width: 100%;
        min-width: 100%;
    }
    
    .footer-details {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .footer-item {
        width: 100%;
        min-width: 100%;
        text-align: center;
        align-items: center;
    }
    
    .footer-social {
        flex-direction: column;
        gap: 15px;
    }

    .about-us-image,
    .commitment-image {
        width: 100%;
    }

    .services-section,
    .gallery-section,
    .process-section,
    .commitment-section {
        padding: 40px 0;
    }

    .logo img {
        width: auto;
        height: 50px;
    }
}

@media (max-width: 480px) {
    .header {
        height: 500px;
    }
    
    
    
    .nav-container {
        padding: 15px;
    }
    
    .nav-container.scrolled {
        padding: 10px 15px;
    }
    
    .hotline-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .section-subtitle,
    .about-us-header .section-subtitle,
    .process-header .section-subtitle {
        font-size: 20px;
    }
    
    .gallery-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .gallery-item {
        width: 100%;
        min-width: 100%;
    }
    
    .gallery-item.large {
        width: 100%;
        min-width: 100%;
        height: 154px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.process-item,
.service-item,
.testimonial-item {
    animation: fadeInUp 0.6s ease-out;
}

/* Hover Effects */
.process-item:hover,
.service-item:hover {
    transform: translateY(-5px);
    transition: transform 0.3s ease;
}

.nav-menu a:hover {
    color: #FEC107;
    transition: color 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #FEC107;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #e6b000;
} 

/* Zalo Chat Widget */
.zalo-chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    font-family: 'Be Vietnam Pro', sans-serif;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.facebook-chat-button {
    width: 60px;
    height: 60px;
    background: #1877F2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(24, 119, 242, 0.3);
    transition: all 0.3s ease;
    position: relative;
    margin-bottom: 10px;
    background: url(data:image/svg+xml;base64,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) center no-repeat #0084ff;
    background-size: 80%;
}

.facebook-chat-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(24, 119, 242, 0.4);
}

.facebook-icon {
    color: white;
    z-index: 2;
}

.facebook-icon img {
    max-width: 100px;
}

.zalo-chat-button {
    width: 60px;
    height: 60px;
    background: #0068FF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 104, 255, 0.3);
    transition: all 0.3s ease;
    position: relative;
}

.zalo-chat-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 104, 255, 0.4);
}

.zalo-icon {
    color: white;
    z-index: 2;
}

.zalo-icon img {
    max-width: 100px;
}

.zalo-pulse {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(0, 104, 255, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* Responsive for Chat Widgets */
@media (max-width: 768px) {
    .facebook-chat-button,
    .zalo-chat-button {
        width: 55px;
        height: 55px;
    }
}

@media (max-width: 480px) {
    .facebook-chat-button,
    .zalo-chat-button {
        width: 50px;
        height: 50px;
    }
    
    .facebook-icon img,
    .zalo-icon img {
        width: 80px;
    }
} 

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
}

.mobile-menu-btn span {
    width: 24px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(45deg) translate(-7px, -8px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    flex-direction: column;
    padding: 0 0;
}

.mobile-menu.active {
    display: flex;
    border-bottom: 1px solid #DDD;
    border-top: 1px solid #DDD;
}

.mobile-menu a {
    padding: 15px 30px;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}

.mobile-menu a:hover {
    background: #f8f9fa;
    color: #0068FF;
}

.mobile-menu a:last-child {
    border-bottom: none;
}

/* Phone Chat Button */
.phone-chat-button {
    width: 60px;
    height: 60px;
    background: #28a745;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(40, 167, 69, 0.3);
    transition: all 0.3s ease;
    position: relative;
    margin-bottom: 10px;
    display: none;
}

.phone-chat-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(40, 167, 69, 0.4);
}

.phone-icon {
    color: white;
    z-index: 2;
    display: flex;
}

.phone-icon svg {
        width: 30px;
        height: 30px;
    }

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hotline-btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-container {
        justify-content: space-between;
        padding: 15px 20px;
    }
    
    /* Chat buttons responsive */
    .facebook-chat-button,
    .phone-chat-button,
    .zalo-chat-button {
        width: 55px;
        height: 55px;
    }

    .phone-chat-button {
        display: flex;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 10px 15px;
    }
    
    .mobile-menu {
        padding: 0 0;
    }
    
    .mobile-menu a {
        padding: 12px 25px;
        font-size: 14px;
    }
    
    /* Chat buttons responsive */
    .facebook-chat-button,
    .phone-chat-button,
    .zalo-chat-button {
        width: 50px;
        height: 50px;
    }
}