body {
    margin: 50px;
    padding: 0;
    box-sizing: border-box;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: auto;
    gap: 20px;
    justify-items: center;

    grid-template-areas:
    "lettersHead puzzleHead solutionHead"
    "letters puzzle solution"
    "buttons buttons buttons";
}

#letters_head {
    grid-area: lettersHead;
}
#puzzle_head {
    grid-area: puzzleHead;
}
#solution_head {
    grid-area: solutionHead;
}
#letters {
    grid-area: letters;
}
#puzzle {
    grid-area: puzzle;
}
#solution {
    grid-area: solution;
}
#buttons {
    margin: 40px;
    grid-area: buttons;
    justify-self: center;
}

/* Basic settings for all tiles */
#puzzle div, #letters div, #solution div {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;

    /* Font */
    font-family: "Helvetica", sans-serif;
    font-weight: bold;
    font-size: 3rem;
    text-transform: uppercase;
}


/* Word Grid */

#puzzle, #solution {
    display: grid;
    grid-template-columns: repeat(5, 60px);
    grid-template-rows: repeat(5, 60px);
    gap: 10px;
}

#puzzle div {
    background-color: #F0F8FA;
}

#puzzle div.active:hover {
    box-shadow: 0 0 5px 5px rgb(0 0 0 / 20%);
    cursor: pointer;
}

#puzzle div.mirror {
   opacity: 25%;
}

/* Letters */

#letters {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    align-content: flex-start;
    gap: 10px;
}

/* Letter tiles */

.letter {
    width: 60px;
    height: 60px;
    background-color: #F0F8FA;
    border: 2px solid #76878A;
}

/* Letter hover */
#letters .letter:hover, .slot.letter:hover  {
    box-shadow: 0 0 5px 5px rgb(0 0 0 / 20%);
    cursor: pointer;
}

.used {
    opacity: 25%;
}

.selected {
    background-color: yellow !important;
    border: 2px solid red;
}

.correct {
    width: 60px;
    height: 60px;
    background-color: #99ff66 !important;
    border: 2px solid #76878A;
}

footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    gap: 20px;
    justify-items: center;
}