body {
    background-color: var(--tg-theme-bg-color, #1e1e1e);
    color: var(--tg-theme-text-color, #ffffff);
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 20px;
    user-select: none; /* Запрещаем выделение текста */
}

.coin-btn {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffd700, #ff8c00);
    border: 5px solid #fff;
    font-size: 32px;
    font-weight: bold;
    color: #fff;
    cursor: pointer;
    margin: 30px 0;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    transition: transform 0.1s;
}

.menu button {
    background-color: var(--tg-theme-button-color, #3390ec);
    color: var(--tg-theme-button-text-color, #ffffff);
    border: none;
    padding: 10px 20px;
    margin: 5px;
    border-radius: 10px;
    font-size: 16px;
}