body {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

hr {
    width: 500px;
}

#board {
    width: 400px;
    height: 400px;
    background-color: #cdc1b5;
    border: 6px solid #bbada0;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
}

.tile {
    width: 90px;
    height: 90px;
    border: 5px solid #bbada0;
    font-size: 40px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Barvy dlaždic */
.x2 {
    background-color: #eee4da;
    color: #776e65;
}

.x4 {
    background-color: #ede0c8;
    color: #776e65;
}

.x8 {
    background-color: #f2b179;
    color: #f9f6f2;
}

.x16 {
    background-color: #f59563;
    color: #f9f6f2;
}

.x32 {
    background-color: #f67c5f;
    color: #f9f6f2;
}

.x64 {
    background-color: #f65e3b;
    color: #f9f6f2;
}

.x128 {
    background-color: #edcf72;
    color: #f9f6f2;
}

.x256 {
    background-color: #edcc61;
    color: #f9f6f2;
}

.x512 {
    background-color: #edc850;
    color: #f9f6f2;
}

.x1024 {
    background-color: #edc53f;
    color: #f9f6f2;
}

.x2048 {
    background-color: #edc22e;
    color: #f9f6f2;
}

.x4096, .x8192 {
    background-color: #3c3a32;
    color: #f9f6f2;
}

/* Tlačítko restart */
#restart-button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1.2em;
    background-color: #8f7a66;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.3);
    transition: background-color 0.2s, transform 0.1s;
}

#restart-button:hover {
    background-color: #aa8c74;
}

#restart-button:active {
    transform: scale(0.95);
    background-color: #776e65;
}

/* Ovládací tlačítka */
#controls {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

#controls div {
    display: flex;
    gap: 10px;
}

#controls button {
    width: 70px;
    height: 70px;
    font-size: 1.5em;
    background-color: #8f7a66;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.1s ease, background-color 0.2s ease;
}

#controls button:hover {
    background-color: #aa8c74;
}

#controls button:active {
    transform: scale(0.95);
    background-color: #776e65;
}