* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2A4E63;  /* Dark teal/blue from the corporate profile */
    --secondary-color: #FFFFFF; /* White for contrast */
    --accent-color: #CACACA;   /* Light gray accent */
    --text-color: #333333;     /* Dark text */
    --light-bg: #F5F5F5;       /* Light background */
    --footer-color: #1F3A4A;   /* Darker teal for footer */
}

body {
    font-family: 'Raleway', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

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

a {
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-color);
}

/* Header */
header {
    background-color: var(--secondary-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    margin-right: 15px;
}

.logo h1 {
    font-family: 'Playfair Display', serif;
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 600;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-weight: 500;
    transition: color 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 14px;
}

nav ul li a:hover {
    color: var(--primary-color);
}

/* Hero Section */
#hero {
    background: linear-gradient(rgba(42, 78, 99, 0.65), rgba(42, 78, 99, 0.7)), url('../images/saigon_header_2.webp');
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    color: var(--secondary-color);
    position: relative;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    max-width: 65%;
    padding-top: 80px;
}

.photo-credit {
    position: absolute;
    bottom: 10px;
    right: 20px;
    font-size: 12px;
    opacity: 0.7;
}

#hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

#hero h2 {
    font-family: 'Playfair Display', serif;
    font-size: 36px;
    margin: 20px 0;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    display: inline-block;
}

.divider {
    width: 100px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 10px 0;
}



.btn {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 0;
    font-weight: 600;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 14px;
    border: 2px solid var(--secondary-color);
}

.btn:hover {
    background: transparent;
    color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Sections */
section {
    padding: 100px 0;
}

section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 36px;
    margin-bottom: 30px;
    text-align: center;
    color: var(--primary-color);
    position: relative;
}

section h2:after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 20px auto;
}

#about, #services, #contact {
    background: var(--secondary-color);
}

#about p {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
    font-size: 18px;
    line-height: 1.8;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.about-card {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.about-card:hover {
    transform: translateY(-5px);
}

.about-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 600;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background: var(--light-bg);
    padding: 35px 30px;
    border-radius: 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border-bottom: 3px solid var(--primary-color);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 600;
}

.service-card p {
    line-height: 1.7;
    color: var(--text-color);
}

/* Partners Section */
#partners {
    background-color: var(--light-bg);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.partner-card {
    background-color: var(--secondary-color);
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.partner-image {
    width: 100%;
    height: 350px;
    overflow: hidden;
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

/* Adjust Khanh's image position */
.partner-image img[src*="khanh"] {
    object-position: center 10%;
    /* Move image up by 10% to match Minh's head position */
}

.partner-image:hover img {
    filter: grayscale(50%);
}

.partner-info {
    padding: 25px;
}

.partner-info h3 {
    font-family: 'Playfair Display', serif;
    font-size: 24px;
    margin-bottom: 5px;
    color: var(--primary-color);
    font-weight: 600;
}

.partner-info h4 {
    font-family: 'Raleway', sans-serif;
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 500;
    font-style: italic;
}

.partner-info ul {
    list-style: none;
    padding: 0;
}

.partner-info li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    line-height: 1.5;
}

.partner-info li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 18px;
}

/* Contact Form */
#contact {
    background-color: var(--light-bg);
}

#contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    gap: 20px;
}

#contact-form input,
#contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 0;
    font-family: inherit;
    transition: border 0.3s ease;
}

#contact-form input:focus,
#contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

#contact-form textarea {
    height: 150px;
}

#contact-form .btn {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: 2px solid var(--primary-color);
    cursor: pointer;
}

#contact-form .btn:hover {
    background-color: transparent;
    color: var(--primary-color);
}

/* Footer */
footer {
    background: var(--footer-color);
    color: var(--secondary-color);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo img {
    height: 60px;
}

.footer-info p {
    margin: 5px 0;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 20px;
    }
    
    #hero h1 {
        font-size: 36px;
    }
    
    #hero h2 {
        font-size: 28px;
    }
    
    .hero-content {
        max-width: 100%;
        text-align: center;
        align-items: center;
    }
    
    .about-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-logo {
        margin-bottom: 20px;
    }
}