* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}
body {
    display: flex;
    height: 100vh;
    justify-content: center;
    align-items: center;
    font-family: 'Source Sans 3', sans-serif;
}
.game-container {
    display: flex;
}
.game-board {
    display: grid;
    grid-template-columns: repeat(9, min-content);
    border: 3px solid black; 
    height: fit-content;
}
.cell {
    width: 50px;
    height: 50px;
    border: 1px solid #545454;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: .2s background-color;
}
.cell:hover {
    cursor: pointer;
    background-color: #EBEDFF;
}
.cell>.cell-digit {
    font-size: 40px;
    color: #3C62B3;
}
.cell__clicked {
    background-color: #BBDEFB;
    border: 3px solid #6767FF !important;
    position: relative;
    z-index: 100;
}
.cell__clicked:hover {
    background-color: #BBDEFB;
}
.cell_intersected {
    background-color: #DDE9F3;
}
.cell_intersected:hover {
    background-color: #DDE9F3;
}
.third-row-cell {
    border-bottom: 3px solid black;
}
.third-column-cell {
    border-right: 3px solid black;
}
.game-controls-container {
    margin-left: 20px;
}
.numpad {
    display: grid;
    grid-template-columns: repeat(3, min-content);
    row-gap: 8px;
    column-gap: 8px;
    margin: 15px 0;
}
.numpad-digit-wrapper {
    background-color: #EAEEF4;
    border-radius: 5px;
    width: 100px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: .2s;
}
.numpad-digit-wrapper:hover {
    background-color: #dce3ed;
    cursor: pointer;
}
.numpad-digit {
    font-size: 60px;
    color: #325AAF;
}
.erase-button {
    border-radius: 5px;
    background-color: #EAEEF4;
    border: none;
    width: 100px;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: .2s;
}
.erase-button:hover {
    background-color: #dce3ed;
    cursor: pointer;
}
.erase-icon {
    width: 60px;
    height: auto;
}
.new-game {
    background-color: #5A7BC0;
    border: none;
    border-radius: 5px;
    grid-column-start: 2;
    grid-column-end: 4;
    color: #EAEEF4;
    font-size: 20px;
    font-weight: bold;
    transition: .2s;
}
.new-game:hover {
    background-color: #7091d5;
    cursor: pointer;
}
.initial-cell > .cell-digit {
    color: #344861;
}
.cell__error {
    background-color: #FFAFAF;
}
.cell__error > .cell-digit {
    color: #FF4949;
}
.cell__error.initial-cell {
    background-color: #FFE5E5;
}
.cell__error.initial-cell > .cell-digit {
    color: #FF9393;
}
.cell__correct {
    background-color: #AFFFAF;
}