#reward-ball {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff7043, #ff5722);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: bold;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 8px 20px rgba(0,0,0,.25);
    user-select: none;
}

#reward-ball.running {
    pointer-events: none;
}

#reward-tip {
    position: fixed;
    bottom: 112px;
    right: 24px;
    background: rgba(0,0,0,.85);
    color: #fff;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
    z-index: 9999;
    max-width: 220px;
    line-height: 1.4;
}