/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Header styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 1rem 0;
}

.logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: #2c7be5;
    text-align: left;
    padding-left: 1rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(255,255,255,0.8), rgba(255,255,255,0.8)), url('../images/bg.png') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3rem;
    color: #2c7be5;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #333;
}

.contact-info {
    margin: 2rem 0;
}

.phone {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: bold;
    color: #27ae60;
    text-decoration: none;
    margin: 0 1rem;
    transition: transform 0.3s ease;
}

.phone:hover {
    transform: scale(1.1);
}

.zalo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #27ae60;
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.zalo-link:hover {
    background-color: #219653;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.instruction {
    margin: 2rem 0;
    font-size: 1.1rem;
    color: #666;
}

.scroll-down {
    display: block;
    margin: 2rem auto;
    font-size: 2rem;
    color: #2c7be5;
    animation: bounce 2s infinite;
    text-decoration: none;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(-20px);}
    60% {transform: translateY(-10px);}
}

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e9ecef;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.feature-card h3 {
    color: #2c7be5;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #666;
}

/* Social Links Section */
.social-links {
    padding: 5rem 0;
    background-color: #f1f8ff;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.social-card {
    text-align: center;
    background-color: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.social-card:hover {
    transform: translateY(-10px);
}

.social-icon {
    /* width: 80px; */
    height: 80px;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.social-card:hover .social-icon {
    transform: scale(1.1);
}

/* Add hover effect to social card links */
.social-card a {
    display: block;
    transition: all 0.3s ease;
}

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

/* Add hover effect to social icons with scaling */
.social-icon:hover {
    transform: scale(1.15);
}

.social-card h3 {
    color: #2c7be5;
    margin-bottom: 1rem;
}

.social-card p {
    color: #666;
    font-size: 0.9rem;
}

/* About Section */
.about {
    padding: 5rem 0;
    background-color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.about-text h2 {
    color: #2c7be5;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: #666;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.btn {
    display: inline-block;
    background-color: #27ae60;
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn:hover {
    background-color: #219653;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Values Section */
.values {
    padding: 5rem 0;
    background-color: #f1f8ff;
}

.section-title {
    text-align: center;
    color: #2c7be5;
    margin-bottom: 3rem;
    font-size: 2rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.value-card {
    background-color: white;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.value-card:hover {
    transform: translateY(-10px);
}

.value-card h3 {
    color: #27ae60;
    margin-bottom: 1rem;
}

.value-card p {
    color: #666;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: white;
    text-align: center;
}

.sub-title {
    color: #2c7be5;
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.contact-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.footer h3 {
    margin-bottom: 1rem;
    color: #2c7be5;
}

.footer p {
    margin-bottom: 0.5rem;
}

.copyright {
    margin-top: 1rem;
    color: #bdc3c7;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .feature-grid,
    .social-grid,
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .phone {
        font-size: 1.2rem;
        margin: 0 0.5rem;
    }
    
    .feature-grid,
    .social-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        text-align: center;
    }
    
    .about-text p {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .logo {
        font-size: 1rem;
        padding-left: 0.5rem;
    }
    
    .hero {
        padding: 1rem;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .zalo-link {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}