* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

.scene {
    position: relative;
    width: 100%;
    height: 100vh;
    background: linear-gradient(#111425,#3751e0);
    background-attachment: fixed;
    overflow: hidden;
}

.scene::before {
    content: "";
    position: absolute;
    bottom: -100%;
    left: 0;
    width: 100%;
    height: 250px;
    transition: 0.5s;
    background: linear-gradient(transparent,#fff,#2598f3);
}

.scene.active::before {
    bottom: 0;
}

.scene.active {
    background: linear-gradient(#ffeb3b,#ff9800);
}

.scene.active .bg {
    transform: translateY(0);
}

.scene.active .moon {
    left: 200px;
    box-shadow: 0 0 20px rgba(255,255,255,0.5),
    0 0 40px rgba(255,255,255,0.5),
    0 0 80px rgba(255,255,255,0.5),
    0 0 120px rgba(255,255,255,0.3),
    0 0 180px rgba(255,255,255,0.2),
    0 0 240px rgba(255,255,255,0.2),
    0 0 300px rgba(255,255,255,0.1);
}

.scene.active .moon::before {
    opacity: 0;
    /* display: none; */
}

.moon {
    position: absolute;
    top: 100px;
    left: 400px;
    width: 250px;
    height: 250px;
    background: white;
    border-radius: 50%;
    transition: 0.5s;
    cursor: pointer;
}

.moon::before {
    content: "";
    position: absolute;
    top: -15px;
    left: 15px;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(#111425,#3751e0);
    background-attachment: fixed;
}

.forest {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    transform: scale(1.2);
    z-index: 100;
    transition: 0.5s;
}

.scene.active .forest {
    bottom: -100%;
}

.scene i {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: starsSpawn linear infinite;
}

.scene.active i {
    display: none;
}

@keyframes starsSpawn {
    0% {
        opacity: 0;
        transform: translateY(0px);
    }
    
    10%, 90% {
        opacity: 1;
    }
    
    100% {
        opacity: 0;
        transform: translateY(-100px);
        /* transform: translateY(100px); */
    }
}

@keyframes animCloud{
    0% {
        transform: translateX(-100%) scale(1);
    }
    
    100% {
        transform: translateX(400%) scale(1.5);
    }
}

.cloud1 {
    position: absolute;
    max-width: 600px;
    left: 0;
    z-index: 100000;
    animation: animCloud 50s linear infinite;
}

.cloud2 {
    position: absolute;
    max-width: 600px;
    left: 0;
    z-index: 100000;
    animation: animCloud 35s linear infinite;
}

.cloud3 {
    position: absolute;
    max-width: 600px;
    left: 0;
    top: 0;
    z-index: 100000;
    animation: animCloud 80s linear infinite;
}

.cloud4 {
    position: absolute;
    max-width: 200px;
    left: 0;
    top: 200px;
    z-index: 100000;
    animation-delay: -20s;
    animation: animCloud 15s linear infinite;
}

.cloud5 {
    position: absolute;
    max-width: 500px;
    left: 0;
    top: 150px;
    z-index: 100000;
    animation-delay: -5s;
    animation: animCloud 40s linear infinite;
}

.cloud6 {
    position: absolute;
    max-width: 400px;
    left: 0;
    top: 75px;
    z-index: 100000;
    animation-delay: -10s;
    animation: animCloud 25s linear infinite;
}

img {
    pointer-events: none;
}

.bg {
    position: absolute;
    bottom: 0;
    max-width: 100%;
    transition: 0.5s;
    z-index: 1000;
    transform: translateY(100%);
}

@media (max-width: 600px) {
    .moon {
        position: absolute;
        top: 50px;
        left: -25px;
        width: 250px;
        height: 250px;
        background: white;
        border-radius: 50%;
        transition: 0.5s;
        cursor: pointer;
    }
    
    .cloud1, .cloud2, .cloud3, .cloud4, .cloud5, .cloud6 {
        display: none;
        animation: none;
        transition: 0s;
    }

    .bg {
        width: 100%;
        height: 400px;
    }
}