@charset "utf-8";
/* 键盘样式 */

#keyboard {
    margin-bottom: 10px;
    border: none;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

#keyboard .line {
    padding-left: 5px;
    display: flex;
    justify-content: center;
    margin-bottom: 2px;
}

#keyboard .line div {
    float: left;
    height: 50px;
    width: 50px;
    background-color: #f0f0f0;
    border-radius: 5px;
    margin: 0 3px;
    box-shadow: 0 2px 3px rgba(0,0,0,0.1);
}

#keyboard .line div ul {
    height: 45px;
    padding: 5px 0 0 0;
    margin: 0;
    list-style: none;
}

#keyboard .line div ul li {
    line-height: 22px;
    text-align: center;
    font-weight: bold;
    font-size: 16px;
    margin: 0;
    padding: 0;
}

#keyboard .line .b_on {
    background-color: #74E396;
}

#keyboard .line .b_err {
    background-color: #E9856E;
}

#keyboard .line .b_target {
    background-color: #FFD700;
    box-shadow: 0 0 10px #FFD700;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 5px #FFD700; }
    50% { box-shadow: 0 0 15px #FFD700; }
    100% { box-shadow: 0 0 5px #FFD700; }
}

/* 特殊按键样式 */
#keyboard .line .b_back {
    width: 100px;
}

#keyboard .line .b_tab {
    width: 75px;
}

#keyboard .line .b_lock {
    width: 85px;
}

#keyboard .line .b_enter {
    width: 100px;
}

#keyboard .line .b_shift {
    width: 120px;
}

#keyboard .line .b_ctrl {
    width: 75px;
}

#keyboard .line .b_space {
    width: 300px;
}