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

section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: black;
}

.bowl {
    position: relative;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border: 8px solid transparent;
    transform-origin: bottom center;
    animation: animate 10s linear infinite;
}

@keyframes animate {
    0% {
        filter: hue-rotate(0deg);
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(15deg);
    }
    50% {
        transform: rotate(0deg);
    }
    75% {
        transform: rotate(-15deg);
    }
    100% {
        filter: hue-rotate(360deg);
        transform: rotate(0deg);
    }
}

.bowl::before {
    content: '';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 30px;
    border: 15px solid #444;
    border-radius: 50%;
    box-shadow: 0 10px #222;
}

.bowl::after {
    content: '';
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    width: 150px;
    height: 80px;
    background: rgba(255, 255, 255, 0.05);
}

.liquid {
    position: absolute;
    top: 50%;
    left: 5px;
    right: 5px;
    bottom: 5px;
    background: #41c1fb;
    border-bottom-left-radius: 150px;
    border-bottom-right-radius: 150px;
    filter: drop-shadow(0 0 80px #41c1fb);
    transform-origin: top center;
    animation: animateLiquid 10s linear infinite;
}

@keyframes animateLiquid {
    0% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-20deg);
    }
    50% {
        transform: rotate(0deg);
    }
    75% {
        transform: rotate(20deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

.liquid::before {
    content: '';
    position: absolute;
    top: -10px;
    width: 100%;
    height: 20px;
    background: #41c1fb;
    border-radius: 50%;
    filter: drop-shadow(0 0 80px #41c1fb);
}

.shadow {
    position: absolute;
    top: calc(-50% + 150px);
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 30px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
}

/* Stile base della bollicina */
.bubble {
    position: absolute;
    background: #41c1fb; /* Cambialo in rosso/arancione se fai la lava! */
    border-radius: 50%;
    filter: drop-shadow(0 0 10px #41c1fb); /* Bagliore della bolla */
    bottom: 50%; /* Partono dalla superficie del liquido */
    z-index: 10;
    /* L'animazione 'rise' farà salire la bolla, i secondi li deciderà JS! */
    animation: rise linear forwards; 
}

/* L'animazione di salita ed esplosione */
@keyframes rise {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) scale(0); /* Sale, si rimpicciolisce e sparisce */
        opacity: 0;
    }
}