@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@300;400;700&display=swap');
:root{
    --demo-color: hsl(2, 59%, 39%);
    --var-color:29;
    --first-color: hsl(var(--var-color),80%, 58%);
    --first-color-light: hsl(var(--var-color),80%, 70%);
    --black-color: hsl(var(--var-color),16%, 15%);
    --text-color: hsl(var(--var-color),18%, 50%);
    --body-color: hsl(var(--var-color),85%, 91%);
    --body-font: 'Quicksand', sans-serif;
    --white-color: #fff;
    --dark-color: #000;
    --h3-font-size: 1.125rem;
    --small-font-size: 1rem;
}
[color-scheme = 'dark']{
    --var-color:19;
    --first-color: hsl(var(--var-color),80%, 58%);
    --first-color-light: hsl(var(--var-color),80%, 70%);
    --black-color: hsl(var(--var-color),16%, 15%);
    --text-color: hsl(var(--var-color),18%, 70%);
    --body-color: hsl(var(--var-color),95%, 1%);
    --body-font: 'Quicksand', sans-serif;
    --white-color: #fff;
    --dark-color: hsl(var(--var-color),99%, 4%);
    --h3-font-size: 1.125rem;
    --small-font-size: 1rem;
}
[color-scheme = 'red']{
    --var-color:2;
    --first-color: hsl(var(--var-color),80%, 58%);
    --first-color-light: hsl(var(--var-color),80%, 70%);
    --black-color: hsl(var(--var-color),16%, 15%);
    --text-color: hsl(var(--var-color),18%, 90%);
    --body-color: hsl(var(--var-color),59%, 40%);
    --body-font: 'Quicksand', sans-serif;
    --white-color: #fff;
    --dark-color: hsl(var(--var-color),99%, 20%);
    --h3-font-size: 1.125rem;
    --small-font-size: 1rem;
}

body{
    font-family: var(--body-font);
    background: var(--body-color);
}
header {
    color: var(--text-color);
    padding: 2rem;
    display: grid;
    gap: 1ch;
    place-items: center;
  }
#theme-options{
    display: inline-flex;
    align-items: center;
    gap: .90ch;
}
.container{
    height: 50vh;
    margin-inline: 1.5rem;
    display: grid;
    place-items: center;
}
.search{
    position: relative;
    width: 76px;
    height: 76px;
    background-color: var(--white-color);
    box-shadow: 0 4px 24px hsla(222, 68%, 12%, .1);
    border-radius: 4rem;
    padding: 10px;
    overflow: hidden;
    transition: width .5s cubic-bezier(.9, 0, .3, .9) ;
}
.search__input{
    border: none;
    outline: none;
    width: calc(100% - 79px);
    height: 100%;
    border-radius: 4rem;
    padding-left: 14px;
    font-family: var(--body-font);
    font-size: var(--small-font-size);
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.5s;
}
.search__input:-webkit-autofill{
    box-shadow: 0 0 0 100px var(--white-color) inset;
}
.search__button{
    width: 76px;
    height: 76px;
    background-color: var(--dark-color);
    border-radius: 50%;
    position: absolute;
    top: 0;
    bottom: 0;
    right: 10px;
    margin: auto;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: transform .6s cubic-bezier(.9, 0, .3, .9) ;
}
.search__icon,
.search__close{
    color: var(--white-color);
    font-size: 1.5rem;
    position: absolute;
    transition: opacity .5s cubic-bezier(.9, 0, .3, .9) ;
}
.search__close{
    opacity: 0;
}
.show-search{
    width: 100%;
}
.show-search .search__input{
    opacity: 1;
    pointer-events: initial;
}
.show-search .search__button{
    transform: rotate(90deg);
}
.show-search .search__icon{
    opacity: 0;
}
.show-search .search__close{
    opacity: 1;
}
@media screen and (min-width: 576px){
    .show-search{
        width: 450px;
    }
}