body {
    background: radial-gradient(circle at top, #111, #000);
    color: #0f0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

body::before {
    content: "♠ ♥ Welcome to Gambling API ♦ ♣";
    font-size: 24px;
    color: #0f0;
    margin-bottom: 40px;
    display: block;
    text-shadow: 0 0 5px #0f0, 0 0 10px #0f0;
}

button {
    background-color: #0f0;
    color: #000;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 0 10px #0f0, 0 0 5px #0f0 inset;
    transition: background 0.2s ease-in-out, transform 0.2s;
}

button:hover {
    background-color: #1f1;
    transform: scale(1.05);
}

button.logout {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 10px 20px;
    font-size: 14px;
}

button.balance {
    margin-top: 20px;
}