body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
}

header {
    display: flex;
    justify-content: space-between;
    padding: 15px 30px;
    background: #111;
    color: #fff;
    position: sticky;
    top: 0;
}

header a {
    color: #fff;
    margin: 0 10px;
    text-decoration: none;
}

.hero {
    background: linear-gradient(to right, #1e90ff, #00bfff);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.btn {
    background: white;
    color: #1e90ff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
}

.services {
    padding: 50px 20px;
    text-align: center;
}

.service-box {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.card {
    background: white;
    padding: 20px;
    width: 250px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 8px;
}

.testimonials {
    background: #eee;
    padding: 40px;
    text-align: center;
}

.testimonial {
    margin: 10px auto;
    max-width: 500px;
    font-style: italic;
}

.contact {
    padding: 40px;
    text-align: center;
}

.contact input, .contact textarea {
    width: 90%;
    max-width: 400px;
    margin: 10px;
    padding: 10px;
}

.contact button {
    padding: 10px 20px;
    background: #1e90ff;
    color: white;
    border: none;
    cursor: pointer;
}

footer {
    background: #111;
    color: white;
    text-align: center;
    padding: 15px;
}
body.dark {
    background: #121212;
    color: #eee;
}
body.dark header,
body.dark footer {
    background: #000;
}
body.dark .card {
    background: #1e1e1e;
}