body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    text-align: center;
    padding: 20px;
    margin: 0;
}

h1 {
    color: #ff5733;
    font-size: 36px;
    margin-bottom: 15px;
}

p {
    font-size: 18px;
    color: #333;
    margin: 10px 0;
}

.construction {
    font-size: 80px;
    color: #ff5733;
    margin: 20px 0;
}

.impressum {
    font-size: 14px;
    color: #555;
    margin-top: 20px;
}

.impressum a {
    color: #ff5733;
    text-decoration: none;
}

.impressum a:hover {
    text-decoration: underline;
}

.warning {
    background-color: #ffef9f;
    padding: 15px;
    font-weight: bold;
    margin: 20px 0;
    border-radius: 8px;
    border: 1px solid #ffc107;
}

.tic-tac-toe {
    margin: 30px auto;
    max-width: 300px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
}

.cell {
    width: 100px;
    height: 100px;
    background-color: #fff;
    border: 2px solid #ff5733;
    font-size: 24px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.cell:hover {
    background-color: #ffe5e0;
    transform: scale(1.05);
}

#game-mode {
    margin-bottom: 20px;
}

#reset-button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 16px;
    background-color: #ff5733;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#reset-button:hover {
    background-color: #ff7859;
}

@media (max-width: 768px) {
    h1 {
        font-size: 28px;
    }
    .construction {
        font-size: 60px;
    }
    .cell {
        width: 80px;
        height: 80px;
        font-size: 20px;
    }
}