body {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

.container{
    box-sizing: border-box;
    margin: 0 auto;
}


.header-container {
    display: flex;
    justify-content:center;
    max-width: 100%;
    width: 400px;
    margin: 0 auto;
}

.score-container, .share-button-container {
    margin-left: 5px;
    margin-right: 5px;
    display: flex;
    flex-direction: column;
    width: 50%;
    height: 57px;
    font-weight: 600;
}

.score-container {
    align-items: flex-start;
}

.share-button-container {
    align-items: flex-end;
}

#score {
    font-weight: bold;
    font-size: 26px;
    display: flex;
    align-items: flex-start;
    justify-content:end;
}

.share-label, .score-label {
    margin-bottom: 2px;
}

.share-button-container a img{
    width: 30px;
    height: auto;
    margin-left: 5px;
}

hr {
    max-width: 480px;
    border: 1px solid #B7DFF2; 
}

#board{
    width: 400px;
    height: 400px;
    background-color: #effaff; 
    border: 6px solid #b7dff2; 
    margin: 0 auto; /*y-margin is set to 0, x-margin is set to auto*/
    display: flex;
    flex-wrap: wrap;  
}

.tile {
    position: relative;
    display: inline-block;
    width: 90px;
    height: 90px;
    border: 5px solid #b7dff2;
    font-size: 40px;

    display: flex;
    justify-content: center;
    align-items: center;

    margin: 0;
    padding: 0;
}


.x2 {
    color: rgba(0, 0, 0, 0); 
    background-color: #eee4da;
    background-image: var(--background-image-url-02);
    background-size: 100% 100%;
}

.x4 {
    color: rgba(0, 0, 0, 0); 
    background-color: #ece0ca;
    background-image: var(--background-image-url-04);
    background-size: 100% 100%;
}

.x8 {
    color: rgba(0, 0, 0, 0); 
    background-color: #f4b17a;
    background-image: var(--background-image-url-08);
    background-size: 100% 100%;
}

.x16 {
    color: rgba(0, 0, 0, 0); 
    background-color: #f59575;
    background-image: var(--background-image-url-16);
    background-size: 100% 100%;
}

.x32 {
    color: rgba(0, 0, 0, 0); 
    background-color: #f57c5f;
    background-image: var(--background-image-url-32);
    background-size: 100% 100%;
}

.x64 {
    color: rgba(0, 0, 0, 0);
    background-color: #f65d3b;
    background-image: var(--background-image-url-64);
    background-size: 100% 100%;
}

.x128 {
    color: rgba(0, 0, 0, 0); 
    background-color: #edce71;
    background-image: var(--background-image-url-128);
    background-size: 100% 100%;
}

.x256 {
    color: rgba(0, 0, 0, 0); 
    background-color: #edcc63;
    background-image:var(--background-image-url-256);
    background-size: 100% 100%;
}

.x512 {
    color: rgba(0, 0, 0, 0); 
    background-color: #edc651;
    background-image: var(--background-image-url-512);
    background-size: 100% 100%;
}

.x1024 {
    color: rgba(0, 0, 0, 0); 
    background-color: #eec744;
    background-image: var(--background-image-url-1024);
    background-size: 100% 100%;
}

.x2048 {
    color: rgba(0, 0, 0, 0); 
    background-color: #eec230;
    background-image: var(--background-image-url-2048);
    background-size: 100% 100%;
}

.x4096 {
    color: rgba(0, 0, 0, 0); 
    background-color: #fe3d3d;
    background-image: var(--background-image-url-4096);
    background-size: 100% 100%;
}

.x8192 {
    color: rgba(0, 0, 0, 0); 
    background-color: #ff2020;
    background-image: var(--background-image-url-8192);
    background-size: 100% 100%;
}



@keyframes slide-from-right{
    0%{
        transform: translateX(100%);
    }
    100%{
        transform: translateX(0);
    }
}

@keyframes slide-from-left{
    0%{
        transform: translateX(-100%);
    }
    100%{
        transform: translateX(0);
    }
}


@keyframes slide-from-top{
    0%{
        transform: translateY(-100%);
    }
    100%{
        transform: translateY(0);
    }
}

@keyframes slide-from-bottom{
    0%{
        transform: translateY(100%);
    }
    100%{
        transform: translateY(0);
    }
}



:root{
    --background-image-url-02: url('./images/01-zuitt_2.png');
    --background-image-url-04: url('./images/02-zuitt_4.png');
    --background-image-url-08: url('./images/03-zuitt_8.png');
    --background-image-url-16: url('./images/04-zuitt_16.png');
    --background-image-url-32: url('./images/05-zuitt_32.png');
    --background-image-url-64: url('./images/06-zuitt_64.png');
    --background-image-url-128: url('./images/07-zuitt_128.png');
    --background-image-url-256: url('./images/08-zuitt_256.png');
    --background-image-url-512: url('./images/09-zuitt_512.png');
    --background-image-url-1024: url('./images/10-zuitt_1024.png');
    --background-image-url-2048: url('./images/11-zuitt_2048.png');
    --background-image-url-4096: url('./images/12-zuitt_4096.png');
    --background-image-url-8192: url('./images/13-zuitt_8192.png');
}


@media(max-width: 415px){
	#board{
		margin-top: 8px;
	    width: 90vw;
	    max-width: 400px;
	    height: 90vw;
		max-height: 400px; 
	}

	.tile {
		box-sizing: border-box;
	    width: 25%;
	    height: 25%;
	}

	h1{
		font-size: 40px;
		font-weight: 700;
	}
}