* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: #f5f5f5;
    color: #222;
}

header {
    display: flex;
    justify-content: space-between;
    padding: 15px 40px;
    background: #0a1f33;
    color: white;
}

header a {
    color: white;
    margin-left: 20px;
    text-decoration: none;
}

.hero {
    height: 80vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),
                url('../assets/hero.jpg') center/cover;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.btn {
    background: #ff9f1c;
    padding: 12px 25px;
    margin-top: 20px;
    color: black;
    text-decoration: none;
    font-weight: bold;
}

section {
    padding: 60px 40px;
}

.products {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.product-card {
    background: white;
    padding: 20px;
    border-left: 5px solid #0a1f33;
}

.clients img {
    max-width: 150px;
    margin: 20px;
}

.certificate img {
    max-width: 100%;
}

/* Scroll animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: center;
    }
}