@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;700&display=swap');
/* reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body{
    background-color: #ebebeb;
}

.piano {
    background-color: #121212;
    width: 1000px;
    height: 400px;
    margin: 100px auto 0;
    border-radius: 20px;
    color: black;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
}

.controls {
    color: rgba(255, 255, 255, 0.8);
    padding: 30px;
    background-color: #333;
    display: flex;
    width: 100%;
    justify-content: space-between;
}

.controls h1 {
    font-weight: 500;
    font-size: 1.4rem;
}

.switcher {
    width: 50px;
    height: 25px;
    background-color: #555;
    display: flex;
    border-radius: 50px;
}

.switcher__button {
    height: 100%;
    aspect-ratio: 1/1;
    background-color: #ddd;
    border-radius: 25px;
}

.switcher--active {
    background-color: #006eff;
    justify-content: flex-end;
}

.checkbox__label {
    display: flex;
    gap: 15px;
}

.piano__keys {
    width: 100%;
    height: 300px;
    background-color: #181818;
    border-radius: 15px;
    padding: 30px 40px;
    display: flex;
}

.white {
    background-color: white;
    flex-grow: 1;
    border-radius: 5px;
    border-bottom: 8px solid #ddd;
    color: rgba(0, 0, 0, 0.3);
    margin-left: -17px;
    z-index: 1;
}

.key span{
    font-weight: 600;
    position: absolute;
    transition-duration: 320ms;
}

.key {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 8px;
    user-select: none;
}

.black {
    width: 40px;
    background: linear-gradient(black, #333);
    height: 150px;
    border-radius: 0 0 5px 5px;
    border-bottom: 8px solid #222;
    margin-left: -20px;
    z-index: 2;
    color: rgba(255, 255, 255, 0.3);
}

.piano__keys .white:nth-child(1){
    margin-left: 0px;
}
.piano__keys .white:nth-child(5){
    margin-right: 20px;
}
.piano__keys .white:nth-child(12){
    margin-right: 20px;
}
.piano__keys .white:nth-child(17){
    margin-right: 20px;
}

.black--pressed {
    background: linear-gradient(#222, black);
    border-bottom: none;
    height: 148px;
}

.disabled-keys span {
    opacity: 0;
}