/* Virtual Keyboard Styles */
.virtual-keyboard-container {
    margin: 10px auto;
    padding: 10px;
    background-color: #f0f0f0;
    border-radius: 8px;
    max-width: 600px;
    text-align: center;
    user-select: none;
}

.vk-row {
    display: flex;
    justify-content: center;
    margin-bottom: 5px;
}

.vk-key {
    background-color: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin: 0 3px;
    width: 36px;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 2px 2px rgba(0,0,0,0.1);
    transition: background-color 0.1s, transform 0.1s;
    font-family: 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
    color: #333;
}

.vk-key:hover {
    background-color: #e8e8e8;
}

.vk-key:active {
    background-color: #d0d0d0;
    transform: translateY(1px);
    box-shadow: 0 1px 1px rgba(0,0,0,0.1);
}

.vk-key.special {
    width: auto;
    padding: 0 10px;
    font-size: 14px;
    background-color: #e0e0e0;
}

.vk-key.shift-key.active {
    background-color: #bbb;
    color: #fff;
}

.vk-spacer {
    width: 20px;
}