*{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}
:root{
                    /*Theme 1*/
    /*Backgrounds*/
    --very-dark-desaturated-blue-1:hsl(222, 26%, 31%);
    --very-dark-desaturated-blue-2:hsl(223, 31%, 20%);
    --very-dark-desaturated-blue-3:hsl(224, 36%, 15%);
    /*Keys*/
    --desaturated-dark-blue-1: hsl(225, 21%, 49%);
    --desaturated-dark-blue-2: hsl(224, 28%, 35%);
    --red: hsl(6, 63%, 50%);
    --dark-red: hsl(6, 70%, 34%);
    --light-grayish-orange: hsl(30, 25%, 89%);
    --grayish-orange: hsl(28, 16%, 65%);
    /*Text*/
    --very-dark-grayish-blue: hsl(221, 14%, 31%);
    --white: hsl(0, 0%, 100%);

                    /*Theme 2*/
    /*Backgrounds*/
    --light-gray: hsl(0, 0%, 90%);
    --grayish-red: hsl(0, 5%, 81%);
    --very-light-gray: hsl(0, 0%, 93%);
    /*Keys*/
    --dark-moderate-cyan: hsl(185, 42%, 37%);
    --Very-dark-cyan: hsl(185, 58%, 25%);
    --orange: hsl(25, 98%, 40%);
    --dark-orange: hsl(25, 99%, 27%);
    --light-grayish-yellow: hsl(45, 7%, 89%);
    --dark-grayish-orange: hsl(35, 11%, 61%);
    /*Text*/
    --very-dark-grayish-yellow: hsl(60, 10%, 19%);
    --white: hsl(0, 0%, 100%);

                    /*Theme 3*/
    /*Backgrounds*/
    --very-dark-violet-1: hsl(268, 75%, 9%);
    --very-dark-violet-2: hsl(268, 71%, 12%);
    /*Keys*/
    --dark-violet: hsl(281, 89%, 26%);
    --vivid-magenta: hsl(285, 91%, 52%);
    --pure-cyan: hsl(176, 100%, 44%);
    --soft-cyan: hsl(177, 92%, 70%);
    --very-dark-violet: hsl(268, 47%, 21%);
    --dark-magenta: hsl(290, 70%, 36%);
    /*Text*/
    --light-yellow: hsl(52, 100%, 62%);
    --very-dark-blue: hsl(198, 20%, 13%);
    --white: hsl(0, 0%, 100%);
}
html{
    font-family: 'League Spartan', sans-serif;
}
main{
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--very-dark-desaturated-blue-1);
}
main .calc-container{
    width: 100%;
    max-width: 550px;
    display: flex;
    flex-direction: column;
    background-color: var(--very-dark-desaturated-blue-1);
    padding: 25px;
}

/*SECTION 1*/
main .calc-container .theme-container{
    display: flex;   
    color: var(--white);
    height: 75px;
}
main .calc-container .theme-container .section1{
    width: 50%;
}
main .calc-container .theme-container .section1 p{
    font-size: 32px;
    margin-top: 10px;
}
main .calc-container .theme-container .section2{
    width: 50%;
    display: flex;
    flex-direction: column;
    align-items: end;
}
main .calc-container .theme-container .section2 .nums{
    font-size: 12px;
    letter-spacing: 8.5px;
}
.theme-container .section2 .select-theme{
    margin-top: 10px;
    width: 100%;
    display: flex;
    justify-content: end;
    align-items: center;
}
.theme-container .section2 .select-theme p{
    font-size: 11px;
    letter-spacing: 2px;
    font-weight: 100;
    margin-right: 20px;
    cursor: pointer;
}
.section2 .select-theme .color-theme[type=range]{
    -webkit-appearance: none;
    appearance: none;
    background: var(--very-dark-desaturated-blue-3);
    cursor: pointer;
    width: 75px;
    height: 25px;
    border-radius: 50px;
    padding: 5px;
}
.section2 .select-theme .color-theme[type=range]::-webkit-slider-thumb{
    -webkit-appearance: none;
    height: 15px;
    width: 15px;
    border-radius: 50%;
    background: var(--red);
}
.section2 .select-theme .color-theme[type=range]::-webkit-slider-thumb:hover{
    filter: brightness(2);
}

/*SECTION 2*/
main .calc-container .result-container{
    width: 100%;
    height: 90px;
    background-color: var(--very-dark-desaturated-blue-3);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: end;
    overflow: hidden;
}
main .calc-container .result-container p{
    font-size: 40px;
    margin-right: 25px;
    color: var(--white);
}

/*SECTION 3*/
main .calc-container .nums-container{
    width: 100%;
    height: 400px;
    background-color: var(--very-dark-desaturated-blue-2);
    color: var(--white);
    margin-top: 25px;
    border-radius: 10px;
    padding: 25px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-auto-rows: 1fr;
    gap: 5%;
}

main .calc-container .nums-container .nums{
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--light-grayish-orange);
    border-radius: 5px;
    padding-top: 7px;
    box-shadow: 0 4px 0 var(--grayish-orange);
    cursor: pointer;
}
main .calc-container .nums-container .nums:hover{
    filter: brightness(125%);
}
main .calc-container .nums-container .nums p{
    font-size: 30px;
    color: var(--very-dark-grayish-blue);
    cursor: pointer;
}
main .calc-container .nums-container .text{
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--desaturated-dark-blue-1);
    border-radius: 5px;
    box-shadow: 0 4px 0 var(--desaturated-dark-blue-2);
    font-size: 20px;
    cursor: pointer;
}
main .calc-container .nums-container .text:hover{
    filter: brightness(125%);
}
main .calc-container .nums-container .reset{
    grid-area: 5 / 1 / 6 / 3;
}
main .calc-container .nums-container .equal{
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--red);
    border-radius: 5px;
    grid-area: 5 / 3 / 6 / 5;
    box-shadow: 0 4px 0 var(--dark-red);
    cursor: pointer;
}
main .calc-container .nums-container .equal:hover{
    filter: brightness(125%);
}

/* ---- THEME 2 ---- */
.theme2-main{
    background-color: var(--very-light-gray);
}
.theme2-main .calc-container{
    background-color: var(--very-light-gray);
}
/*SECTION 1*/
.theme2-main .calc-container .theme-container{
    color: var(--very-dark-grayish-yellow);
}
.theme2-main .section2 .select-theme .color-theme[type=range]{
    background-color: var(--grayish-red);
}
.theme2-main .section2 .select-theme .color-theme[type=range]::-webkit-slider-thumb{
    background-color: var(--orange);
}
/*SECTION 2*/
.theme2-main .calc-container .result-container{
    background-color: var(--white);
}
.theme2-main .calc-container .result-container p{
    color: var(--very-dark-grayish-yellow);
}
/*SECTION 3*/
.theme2-main .calc-container .nums-container{
    background-color: var(--grayish-red);
}
.theme2-main .calc-container .nums-container .nums{
    background-color: var(--very-light-gray);
    box-shadow: 0 4px 0 var(--grayish-orange);
}
.theme2-main .calc-container .nums-container .nums p{
    color: var(--very-dark-grayish-yellow);
}
.theme2-main .calc-container .nums-container .text{
    background-color: var(--dark-moderate-cyan);
    box-shadow: 0 4px 0 var(--Very-dark-cyan);
}
.theme2-main .calc-container .nums-container .equal{
    background-color: var(--orange);
    box-shadow: 0 4px 0 var(--dark-orange);
}

/* ---- THEME 3 ---- */
.theme3-main{
    background-color: var(--very-dark-violet-1);
}
.theme3-main .calc-container{
    background-color: var(--very-dark-violet-1);
}
/*SECTION 1*/
.theme3-main .calc-container .theme-container{
    color: var(--light-yellow);
}
.theme3-main .section2 .select-theme .color-theme[type=range]{
    background-color: var(--very-dark-violet-2);
}
.theme3-main .section2 .select-theme .color-theme[type=range]::-webkit-slider-thumb{
    background-color: var(--pure-cyan);
}
/*SECTION 2*/
.theme3-main .calc-container .result-container{
    background-color: var(--very-dark-violet-2);
}
.theme3-main .calc-container .result-container p{
    color: var(--light-yellow);
}
/*SECTION 3*/
.theme3-main .calc-container .nums-container{
    background-color: var(--very-dark-violet-2);
}
.theme3-main .calc-container .nums-container .nums{
    background-color: var(--very-dark-violet);
    box-shadow: 0 4px 0 var(--dark-magenta);
}
.theme3-main .calc-container .nums-container .nums p{
    color: var(--light-yellow);
}
.theme3-main .calc-container .nums-container .text{
    background-color: var(--dark-violet);
    box-shadow: 0 4px 0 var(--vivid-magenta);
}
.theme3-main .calc-container .nums-container .equal{
    background-color: var(--pure-cyan);
    box-shadow: 0 4px 0 var(--soft-cyan);
}


/*-----ATRIBUTION-----*/

.attribution{
    width: 100%;
    max-width: 300px;
    display: flex;
    align-items: center;
    flex-direction: column;
}
.attribution p{
    color: var(--light-grayish-orange);
    font-size: 15px;
    padding: 3px;
}
.attribution p a{
    color: var(--light-grayish-orange);
    text-decoration: none;
}
.attribution p a:hover{
    color: var(--red);
    filter: brightness(125%);
}
/*THEME2*/
.theme2-main .attribution p{
    color: var(--very-dark-grayish-yellow);
}
.theme2-main .attribution p a{
    color: var(--very-dark-grayish-yellow);
}
.theme2-main .attribution p a:hover{
    color: var(--orange);
}

/*THEME3*/
.theme3-main .attribution p{
    color: var(--light-yellow);
}
.theme3-main .attribution p a{
    color: var(--light-yellow);
}
.theme3-main .attribution p a:hover{
    color: var(--soft-cyan);
}