/* Mattina: giallo pastello */
@keyframes sfondoMattina {
    0% {
        background-color: #FFF8DC;
    }

    50% {
        background-color: #FFFAE3;
    }

    100% {
        background-color: #FFFACD;
    }
}

/* Pomeriggio: azzurro tenue */
@keyframes sfondoPomeriggio {
    0% {
        background-color: #E3F2FD;
    }

    50% {
        background-color: #D0EBFF;
    }

    100% {
        background-color: #B2DFDB;
    }
}

/* Tramonto: rosa/arancio */
@keyframes sfondoTramonto {
    0% {
        background-color: #FFD6D6;
    }

    50% {
        background-color: #FFB6B9;
    }

    100% {
        background-color: #FFCBA4;
    }
}

/* Notte: blu profondo */
@keyframes sfondoNotte {
    0% {
        background-color: #1A1A2E;
    }

    50% {
        background-color: #16213E;
    }

    100% {
        background-color: #0F3460;
    }
}

/* Applicazione base */
body {
    animation-duration: 5s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: ease-in-out;
}