/* Banner nhỏ */
.banner-small {
    background: #002B5B;
    color: white;
    text-align: center;
    padding: 80px 20px;
}
.banner-small h1 {
    font-size: 36px;
    margin: 0;
}

/* Giới thiệu dự án */
.intro-project {
    background: #ffffff;
    padding: 60px 20px;
}
.intro-project h2 {
    color: #002B5B;
    font-size: 28px;
    margin-bottom: 20px;
}
.intro-project p {
    font-size: 16px;
    color: #555;
}

/* Danh sách dự án */
.project-list {
    background: #f5f7fa;
    padding: 60px 20px;
}
.project-list h2 {
    text-align: center;
    font-size: 32px;
    color: #002B5B;
    margin-bottom: 40px;
}
.grid-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.project-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}
.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.project-info {
    padding: 20px;
}
.project-info h3 {
    font-size: 20px;
    color: #002B5B;
    margin-bottom: 10px;
}
.project-info p {
    font-size: 15px;
    color: #555;
}

/* Contact CTA */
.contact-cta {
    background: #002B5B;
    color: white;
    text-align: center;
    padding: 60px 20px;
}
.contact-cta h2 {
    font-size: 28px;
    margin-bottom: 20px;
}
.btn-secondary {
    display: inline-block;
    background: #FF6F00;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-secondary:hover {
    background: #e65c00;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.2);
}

/* Footer */
footer {
    background: #001f3f;
    color: white;
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
}

.social-links {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 20px;
}
.social-links a img {
    width: 40px;
    height: 40px;
    transition: transform 0.3s;
}
.social-links a:hover img {
    transform: scale(1.2);
}