body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #0f172a;
    color: white;
}

header {
    text-align: center;
    padding: 30px;
    background: #111827;
}

nav {
    margin-top: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}

nav a:hover {
    color: #38bdf8;
}

main {
    text-align: center;
    padding: 100px 20px;
}

h1 {
    font-size: 50px;
    margin: 0;
}

h2 {
    font-size: 42px;
}

p {
    font-size: 20px;
    color: #cbd5e1;
}

button {
    margin-top: 30px;
    padding: 15px 35px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    background: #2563eb;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}