body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f4f6f9;
    color: #333;
}

.container {
    width: 90%;
    margin: auto;
}

header {
    background: #0d1b2a;
    padding: 15px 0;
}

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

.logo {
    height: 55px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-left: 25px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

nav ul li a:hover {
    color: #00b4d8;
}

.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),
    url('https://images.unsplash.com/photo-1526378722484-bd91ca387e72');
    background-size: cover;
    background-position: center;
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.btn-primary {
    background: #00b4d8;
    padding: 12px 25px;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
}

.services {
    padding: 70px 0;
}

.services h2 {
    text-align: center;
    margin-bottom: 50px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: 0.3s;
}

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

.card h3 {
    color: #0d1b2a;
}

.about, .contact {
    background: white;
    padding: 70px 0;
    text-align: center;
}

footer {
    background: #0d1b2a;
    color: white;
    text-align: center;
    padding: 20px;
}