/* Acknowledgement
this design is taken from the following codepen posts 
https://codepen.io/amit_sheen/details/gOmXoVO
https://codepen.io/evilpaper/pen/dyyZjLQ */


*, *::before, *::after {
    padding: 0;
    margin: 0 auto;
    box-sizing: border-box;
    transform-style: preserve-3d;
}
.layout-keyboard {
    /* background-color: #345; */
    background-color:black;
    color: #fff;
    min-height: 12vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.4em;
    perspective: 35em;
}

@media (min-width: 1300px) {
    .layout-keyboard {
        font-size: 1.8em;
    }
}

@media (min-width: 1800px) {
    .layout-keyboard {
        font-size: 2em;
    }
}

/* @media (max-width: 1200px) {
    .layout-keyboard {
        font-size: 1em;
    }
}

@media (max-width: 1300px) {
    .layout-keyboard {
        font-size: 1.5em;
    }
} */

.keyboard {
    position: relative;
    transform: rotateX(60deg);
    cursor: pointer;
}
.key > * {
    position: absolute;
}
.key::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 0.5em;
    height: 0.5em;
    transform: translateX(-50%) rotateX(120deg) translateY(0.25em);
    clip-path: polygon(25% 100%, 75% 100%, 75% 50%, 100% 50%, 50% 0, 0 50%, 25% 50%);
    transform-origin: top;
    transition: opacity 0.2s;
    opacity: 0;
}
.white {
    position: absolute;
    width: calc(1em - 1px);
    height: 5em;
    background-image: linear-gradient(#eee, #fff);
    transform-origin: top;
    transition: all 0.2s;
}

/* original */
/* .white:hover {
    transform: rotateX(-4.2deg);
}
.white:hover::after {
    opacity: 1;
    background-color: #fff 7;
} */
/* end original */


/* add */
.white-press {
    transform: rotateX(-4.2deg);
}
.white-press::after{
    opacity: 1;
    background-color: #fff 7;
}

/*end add */

.white .front {
    width: 100%;
    height: 0.75em;
    top: 100%;
    background-color: #eee;
    background-image: linear-gradient(#fff, #aaa);
    transform: rotateX(-90deg);
    transform-origin: top;
}
.white .left {
    width: 0.75em;
    height: 100%;
    background-image: linear-gradient(90deg, #888, #444);
    transform: rotateY(90deg);
    transform-origin: left;
}
.white .right {
    width: 0.75em;
    height: 100%;
    right: 0;
    background-image: linear-gradient(90deg, #444, #888);
    transform: rotateY(-90deg);
    transform-origin: right;
}
.black {
    position: absolute;
    width: calc(0.5em - 1px);
    height: 3em;
    background-image: linear-gradient(#333, #111);
    transform: translateZ(0.25em);
    transform-origin: top;
    transition: transform 0.2s;
}

/* original */
/* .black:hover {
    transform: translateZ(0.25em) rotateX(-4.2deg);
}
.black:hover::after {
    opacity: 1;
    background-color: #000 7;
} */
/* end original */

/* add */
.black-press {
    transform: translateZ(0.25em) rotateX(-4.2deg);
}

.black-press::after {
    opacity: 1;
    background-color: #000 7;
}
/* end add */

.black .front {
    width: 100%;
    height: 1.4em;
    top: 100%;
    background-color: #f00;
    background-image: linear-gradient(#333, #000);
    transform: rotateX(-45deg);
    transform-origin: top;
}
.black .left {
    width: 1em;
    height: calc(100% + 1em);
    background-image: linear-gradient(90deg, #222, #000);
    transform: rotateY(90deg);
    transform-origin: left;
    clip-path: polygon(0 0, 0 3em, 100% 100%, 100% 0);
}
.black .right {
    width: 1em;
    height: calc(100% + 1em);
    right: 0;
    background-image: linear-gradient(90deg, #000, #222);
    transform: rotateY(-90deg);
    transform-origin: right;
    clip-path: polygon(0 0, 0 100%, 100% 3em, 100% 0);
}
.C {
    left: calc(var(--leftOffset) + 0em);
}
.Db {
    left: calc(var(--leftOffset) + 0.75em);
}
.D {
    left: calc(var(--leftOffset) + 1em);
}
.Eb {
    left: calc(var(--leftOffset) + 1.75em);
}
.E {
    left: calc(var(--leftOffset) + 2em);
}
.F {
    left: calc(var(--leftOffset) + 3em);
}
.Gb {
    left: calc(var(--leftOffset) + 3.75em);
}
.G {
    left: calc(var(--leftOffset) + 4em);
}
.Ab {
    left: calc(var(--leftOffset) + 4.75em);
}
.A {
    left: calc(var(--leftOffset) + 5em);
}
.Bb {
    left: calc(var(--leftOffset) + 5.75em);
}
.B {
    left: calc(var(--leftOffset) + 6em);
}

/* .octave1 {
    --leftOffset: -10.5em;
}

.octave2 {
    --leftOffset: -3.5em;
}
.octave3 {
    --leftOffset: 3.5em;
}
.octave4 {
    --leftOffset: 10.5em;
} */


/* setting for full 7 octave */
/* .octave1 {
    --leftOffset: -25em;
}

.octave2 {
    --leftOffset: -18em;
}
.octave3 {
    --leftOffset: -11em;
}
.octave4 {
    --leftOffset: -4em;
}
.octave5 {
    --leftOffset: 3em;
}
.octave6 {
    --leftOffset: 10em;
}
.octave7 {
    --leftOffset: 17em;
} */

.octave2 {
    --leftOffset: -21em;
}
.octave3 {
    --leftOffset: -14em;
}
.octave4 {
    --leftOffset: -7em;
}
.octave5 {
    --leftOffset: 0em;
}
.octave6 {
    --leftOffset: 7em;
}
.octave7 {
    --leftOffset: 14em;
}