@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,500;0,700;1,400&display=swap');

* {
    padding: 0;
    margin: 0;
    outline: 0;
    box-sizing: border-box;
}

body {
    font: 400 16px Roboto, sans-serif;
    background: radial-gradient(#777, #333);
    color: #eee;
    -webkit-font-smoothing: antialiased;
}

input, button, textarea {
    font: 400 18px Roboto, sans-serif;
}

button {
    cursor: pointer;
}

#container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    
    width: 100%;
    height: 100vh;
}

#difficulty-container {
    display: flex;
    align-items: center;
    justify-content: space-evenly;

    margin-top: 16px;
}

#difficulty {
    margin-left: 8px;
    padding: 4px;
    border: 0;
    border-radius: 5px;
}

#board-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    
    margin: 16px 16px 0 16px;
    background: black;
    border-radius: 8px;
}

#board-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    
    width: 100%;
    margin-top: 10px;
    padding: 0 8px;
}

#board {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    margin: 4px;
    border: 2px solid black;
}

#start-game {
    margin-top: 16px;
    padding: 4px 16px;
    border: 0;
    border-radius: 5px;
    background: #0F0;
    color: #555;
    transition: all 1s ease;
}

#start-game:hover {
    transform: scale(1.1) perspective(1px)
}

#start-game:active {
    position: relative;
    top: 4px;
}

.row {
    display: flex;
    align-items: center;
    justify-content: center;
}

.square {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 26px;
    height: 26px;
    border-top: 1px solid black;
    border-left: 1px solid black;
    
    color: #555;
}

.row .square:first-child {
    border-left: 0;
}

.row:first-child .square {
    border-top: 0;
}

.square:hover {
    background: #CCC;
    cursor: pointer;
}

.unopened {
    background: #AAA;
}

.opened {
    background: #EEE;
}

.bomb {
    background: #E00;
}

.bomb img {
    width: 20px;
    height: 20px;
    color: #FFF;
}

.one {
    color: #00F;
}

.two {
    color: #070;
}

.three {
    color: #F00;
}

.four {
    color: #007;
}

.five {
    color: #700;
}

.six {
    color: #077;
}

.seven {
    color: #000;
}

.eight {
    color: #777;
}

.win {
    color: #0D0;
}

.defeat {
    color: #D00;
}

.hide {
    display: none !important;
}