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

body {
    background-color: #faf8ef;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: Arial, sans-serif;
}

.container {
    width: 460px;
    text-align: center;
}

.header {
    margin-bottom: 20px;
}

h1 {
    font-size: 48px;
    color: #776e65;
    margin-bottom: 10px;
}

.score-container {
    display: inline-block;
    background: #bbada0;
    padding: 10px 20px;
    border-radius: 3px;
    color: white;
    font-weight: bold;
    margin: 10px;
}

#new-game {
    background: #8f7a66;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 3px;
    cursor: pointer;
}

.grid {
    background: #bbada0;
    padding: 15px;
    border-radius: 6px;
    display: grid;
    grid-template-columns: repeat(4, 100px);
    /* Définition explicite de la largeur */
    grid-gap: 15px;
    position: relative;
    box-shadow: 0 0 0 2px #bbada0;
    /* Ajout d'une bordure sous forme d'ombre */
    margin: 0 auto;
    /* Centrage horizontal */
    width: fit-content;
    /* Ajustement automatique de la largeur */
}

.cell {
    width: 100px;
    height: 100px;
    background: rgba(238, 228, 218, 0.35);
    border-radius: 3px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 36px;
    font-weight: bold;
    color: #776e65;
    transition: all 0.15s ease;
    position: relative;
}

/* Animations de déplacement */
.cell.merge {
    animation: merge 0.2s ease-in-out;
}

.cell.slide-left {
    animation: slideLeft 0.2s ease-in-out;
}

.cell.slide-right {
    animation: slideRight 0.2s ease-in-out;
}

.cell.slide-up {
    animation: slideUp 0.2s ease-in-out;
}

.cell.slide-down {
    animation: slideDown 0.2s ease-in-out;
}

@keyframes merge {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes slideLeft {
    0% {
        transform: translateX(100px);
    }

    100% {
        transform: translateX(0);
    }
}

@keyframes slideRight {
    0% {
        transform: translateX(-100px);
    }

    100% {
        transform: translateX(0);
    }
}

@keyframes slideUp {
    0% {
        transform: translateY(100px);
    }

    100% {
        transform: translateY(0);
    }
}

@keyframes slideDown {
    0% {
        transform: translateY(-100px);
    }

    100% {
        transform: translateY(0);
    }
}

.cell[data-value="2"] {
    background: #eee4da;
}

.cell[data-value="4"] {
    background: #ede0c8;
}

.cell[data-value="8"] {
    background: #f2b179;
    color: #f9f6f2;
}

.cell[data-value="16"] {
    background: #f59563;
    color: #f9f6f2;
}

.cell[data-value="32"] {
    background: #f67c5f;
    color: #f9f6f2;
}

.cell[data-value="64"] {
    background: #f65e3b;
    color: #f9f6f2;
}

.cell[data-value="128"] {
    background: #edcf72;
    color: #f9f6f2;
    font-size: 32px;
}

.cell[data-value="256"] {
    background: #edcc61;
    color: #f9f6f2;
    font-size: 32px;
}

.cell[data-value="512"] {
    background: #edc850;
    color: #f9f6f2;
    font-size: 32px;
}

.cell[data-value="1024"] {
    background: #edc53f;
    color: #f9f6f2;
    font-size: 28px;
}

.cell[data-value="2048"] {
    background: #edc22e;
    color: #f9f6f2;
    font-size: 28px;
}

.instruction-message {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(119, 110, 101, 0.9);
    color: white;
    padding: 15px 25px;
    border-radius: 5px;
    font-size: 16px;
    animation: fadeOut 1s ease-in 59s forwards;
    z-index: 1000;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
        visibility: hidden;
    }
}