* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    background-color: #fff;
    color: #333;
}

body.dark-mode {
    background-color: #333;
    color: #fff;
}

header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
}

body.dark-mode header {
    background-color: #222;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: #333;
}

body.dark-mode .logo a {
    color: #fff;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li a {
    text-decoration: none;
    color: #333;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease-in-out;
}

body.dark-mode .nav-links li a {
    color: #fff;
}

.nav-links li a:hover {
    background-color: #f2f2f2;
}

body.dark-mode .nav-links li a:hover {
    background-color: #444;
}

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px;
}

body.dark-mode .burger div {
    background-color: #fff;
}

main {
    padding-top: 60px;
}

section {
    padding: 2rem;
}

.hero {
    background-image: url('https://via.placeholder.com/1500x800');
    background-size: cover;
    background-position: center;
    color: #fff;
    text-align: center;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    background-color: #333;
    color: #fff;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease-in-out;
}

.btn:hover {
    background-color: #555;
}

.about h2, .services h2, .contact h2, .roulette h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.service-cards {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.card {
    background-color: #f2f2f2;
    padding: 2rem;
    margin: 1rem;
    width: 300px;
    text-align: center;
    border-radius: 5px;
}

body.dark-mode .card {
    background-color: #444;
}

.card h3 {
    margin-bottom: 1rem;
}

.contact form {
    display: flex;
    flex-direction: column;
    max-width: 500px;
    margin: 0 auto;
}

.contact input, .contact textarea {
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
}

body.dark-mode .contact input, body.dark-mode .contact textarea {
    background-color: #555;
    border-color: #777;
    color: #fff;
}

.contact button {
    align-self: flex-start;
}

.roulette {
    text-align: center;
}

#roulette-canvas {
    margin-bottom: 1rem;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem;
}

body.dark-mode footer {
    background-color: #222;
}

@media screen and (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .burger {
        display: block;
    }

    .nav-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        background-color: #fff;
        width: 100%;
        padding: 1rem;
    }

    body.dark-mode .nav-active {
        background-color: #222;
    }

    .nav-active li {
        margin-bottom: 1rem;
    }
}