body {
    background: #0a0a0a;
    font-family: 'Segoe UI', sans-serif;
    color: #fff;
    text-align: center;
    padding-top: 80px;
}

label, br {
    font-size: 1.2rem;
}

#szövegdoboz {
    margin-top: 10px;
    padding: 12px 20px;
    width: 300px;
    border: none;
    border-radius: 10px;
    outline: none;
    font-size: 1rem;

    background: #111;
    color: #0affff;
    box-shadow: 0 0 10px #0affff, inset 0 0 10px #0affff;
}

#hossz {
    margin-left: 10px;
    padding: 12px 25px;
    border: none;
    border-radius: 10px;

    background: #1a1a1a;
    color: #ff0aff;
    font-size: 1.1rem;
    cursor: pointer;

    box-shadow: 0 0 12px #ff0aff;
    transition: 0.2s ease-in-out;
}

#hossz:hover {
    box-shadow: 0 0 20px #ff0aff, 0 0 30px #ff0aff;
    transform: scale(1.08);
}

p {
    color: #cdefff;
}

h1 {
    color: #00eaff;
    text-shadow: 0 0 10px #00eaff;
    animation: neonPulse 2.5s infinite alternate;
}

@keyframes neonPulse {
    0% {
        text-shadow: 0 0 10px #00eaff, 0 0 20px #00eaff;
    }
    100% {
        text-shadow: 0 0 25px #00eaff, 0 0 50px #00eaff;
    }
}

#hossz:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px #00d0ff, 0 0 30px #00d0ff;
}

body::before {
    content: "";
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    z-index: -1;
    background: radial-gradient(circle, rgba(0,255,255,0.12), #000 70%);
    animation: backgroundGlow 6s infinite alternate;
}

@keyframes backgroundGlow {
    from {
        transform: scale(1);
        opacity: 0.6;
    }
    to {
        transform: scale(1.3);
        opacity: 1;
    }
}