body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #1e1e1e, #111);
    color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    padding: 40px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

button {
    margin-top: 20px;
    padding: 12px 24px;
    background-color: #00c3ff;
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background-color: #009ac9;
}