#timer {
    background-color: rgb(0, 41, 63);
    padding-block: 7px;
    padding-inline: 10px;
    border-radius: 15px;
    font-size: x-large;
}

#board {
    display: grid;
    gap: 10px;
    width: calc(100vw - 30px);
    height: calc(100vw - 30px);
    margin: 15px;
}

/* board sizes */
.board-easy {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
}
.empty-tile {
    /* background-color: rgb(0, 55, 84); */
    grid-area: 2 / 2 / 3 / 3;
}
.board-medium {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
}
.board-hard {
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(6, 1fr);
}

#board div {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 10px;
}

#board img {
    width: 100%;
    height: 100%;
    border-radius: 10px;
}

/* different tile colors */
.blue {
    background-color: rgb(0, 119, 255);
}
.green {
    background-color: rgb(11, 187, 26);
}
.orange {
    background-color: rgb(160, 109, 0);
}
.purple {
    background-color: rgb(78, 0, 129);
}

.blue, .green, .orange, .purple {
    cursor: pointer;
}

/* win screen */
#win-screen{
    display: none;
    flex-direction: row;
    background-color: rgb(0, 55, 84);
    width: calc(100vw - 30px);
    margin-inline: 20px;
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 10px;
}
#win-screen div {
    width: 50%;
    margin-right: 10px;
}
#win-screen h2 {
    font-size: 30px;
    margin-bottom: 10px;
}
#menu {
    background-color: rgb(0, 45, 69);
    border-radius: 7px;
    text-align: center;
    margin-left: 10px;
    margin-right: 0px !important;
}
#menu a {
    font-size: 25px;
    font-weight: bold;
    padding: 10px;
    height: 100%;
}

/* tablet layout */
@media only screen and (min-width: 600px) {
    #board {
        width: 600px;
        height: 600px;
    }
}

/* desktop layout */
@media only screen and (min-width: 769px) {
    section {
        flex-direction: row;
        min-height: calc(100vh - 75px);
    }

    #board {
        width: calc(100vh - 130px);
        height: calc(100vh - 130px);;
    }

    #win-screen {
        flex-direction: column;
        align-items: center;
        width: 300px;
        height: calc(100vh - 130px);;
        margin: 20px;
        margin-left: 0px;
        padding: 20px;
    }
    #win-screen div {
        width: 100%;
    }
    #menu {
        margin: 0px;
        margin-top: 30px;
        height: 120px;
    }
}

/* make sure images don't get squashed at smaller widths */
@media only screen and (min-width: 769px) and (max-width: 1220px) {
    #board {
        width: calc(85vw) !important;
        height: calc(85vw) !important;
    }
    #win-screen {
        width: 15vw;
        height: calc(85vw) !important;
    }
}