*{
    margin: 0;
    font-family: sans-serif;
    box-sizing: border-box;
}
body{
    --blue: hsl(220, 50%, 70%);
    --light-blue: hsl(220, 50%, 80%);
    --green: hsl(125, 55%, 60%);
    --light-green: hsl(125, 55%, 70%);
    height: 100vh;
    background: white;
    overflow: hidden;
    transition: all 0.1s ease;
}
.blue-theme{
    background: linear-gradient(var(--blue), var(--blue), var(--light-blue), white);
}
.green-theme{
    background: linear-gradient(var(--green), var(--green), var(--light-green), white);
}

#background-title{
    position: absolute;
    top: 0px;
    color: gray;
    left: 50%;
    transform: translate(-48%, 0);
    text-transform: uppercase;
    font-size: 6em; /*12rem*/
    letter-spacing: 3rem; 
    line-height: 10rem;
    font-family: monospace;
    cursor: default;
    z-index: -1;
}
#background-title.study{
    color: white;
}
#background-title.workout{
    color: white;
}
#landing-page{
    width: 80vw;
    height: 60vh;
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}
.landing-boxes{
    height: 300px;
    width: 300px;
    border: none;
    border-radius: 30px;
    padding: 20px;
    text-align: center;
}
.landing-boxes:hover .profile-img {
    box-shadow: 2px 2px 25px 5px gray;
}
.landing-boxes:hover h3{
    text-shadow: 0 2px 20px 5px gray;
}

.workout-background-hover{
    position: fixed;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(to top left, var(--blue), var(--blue), white, white, white);
    z-index: -1;
    transform: translate(100%, 100%);
    transition: all 0.2s ease-in-out;
}
.workout-background-hover span:nth-child(1){
    position: absolute;
    top: 15rem;
    right: 10rem;
    font-size: 3rem;
}
.workout-background-hover span:nth-child(2){
    position: absolute;
    top: 40rem;
    right: 4rem;
    font-size: 3rem;
}
.workout-background-hover span:nth-child(3){
    position: absolute;
    top: 30rem;
    right: 15rem;
    font-size: 3rem;
}
.workout-background-hover span:nth-child(4){
    position: absolute;
    top: 37rem;
    right: 35rem;
    font-size: 3rem;
}
.workout-box:hover ~ .workout-background-hover{
    transform: translate(0, 0);
}
/* ***********study hover effect********** */
.study-background-hover{
    position: fixed;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(to top right, var(--green), var(--green), white, white, white);
    z-index: -1;
    transform: translate(-100%, 100%);
    transition: all 0.2s ease-in-out;
}
.study-background-hover span:nth-child(1){
    position: absolute;
    top: 15rem;
    left: 10rem;
    font-size: 3rem;
}
.study-background-hover span:nth-child(2){
    position: absolute;
    top: 40rem;
    left: 4rem;
    font-size: 3rem;
}
.study-background-hover span:nth-child(3){
    position: absolute;
    top: 30rem;
    left: 15rem;
    font-size: 3rem;
}
.study-background-hover span:nth-child(4){
    position: absolute;
    top: 37rem;
    left: 35rem;
    font-size: 3rem;
}
.study-box:hover ~ .study-background-hover{
    transform: translate(0, 0);
}

.landing-boxes h3{
    font-family: monospace;
    font-size: 2rem;
    color: grey;
    margin: 0 0 10px 0;
    cursor: default;
}
.profile-img{
    display: flex;
    width: 90%;
    height: 90%;
    justify-content: center;
    align-items: center;
    border-radius: 30px;
    margin: auto;
    cursor: pointer;
}
.study-img{
    background: var(--green);
}
.study-img span{
    font-size: 5rem;
    color: white;
}
.workout-img{
    background: var(--blue);
}
.workout-img span{
    font-size: 5rem;
    color: white;
}

#container{
    background: white;
    color: black;
    max-width: 60vw;
    min-height: 400px;
    margin: 170px auto 0 auto;
    padding: 2rem min(10%, 12rem, 400px) 2rem min(10%, 12rem, 400px);
    border-radius: 10px;
    display: none;
    visibility: hidden;
    z-index: 1;
}
#container h2{
    padding: 0 0 20px 0;
    text-decoration: underline;
    text-transform: uppercase;
    font-size: 30px;
    font-family: monospace;
    text-align: center;
} 
.fields{
    margin: 15px 0;    
}
.fields input {
    font-size: 1.8rem;
    border: 2px solid gray;
    border-radius: 5px;
    padding: 5px;
    width: min()
}
input:focus {
    outline: none;
}
input::-webkit-inner-spin-button, 
input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
#timePerExercise-min,
#timePerExercise-sec {
    width: 4rem;
    text-align: center;

}
#popcontainer {
    background: white;
    color: black;
    max-width: 20vw;
    height: 400px;
    margin: 170px auto 0 auto;
    padding: 20px;
    border-radius: 10px;
    display: none;
    visibility: hidden;
    z-index: 1;
    text-align: center;
}

.back-button{
    height: 3rem;
    width: 3rem;
    border-radius: 20px;
    background: white;
    position: fixed;
    margin: 20px;
    top: 0;
    left: 0;
    cursor: pointer;
    display: none;
    visibility: hidden;
}
.back-button span{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
}
/*  * BASIC STYLING 
    * ADDING SOUND IS REMAINING
    * CUSTOM INPUT FIELDS 
    * Scroll dial
    * large font "Workout"*/

#back-home {
    position: absolute;
    top: 0;
    left: 0;
    margin: 20px;
    padding: 15px;
    box-shadow: 0 0 20px 1px hsl(0, 0%, 75%);
    border-radius: 20px;
    font-weight: bold;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--blue);
    display: flex;
    justify-content: center;
    align-items: center;
}

#stopbtn{
    display: none;
    visibility: hidden;
}
#study-container{
    background: white;
    color: black;
    max-width: 60vw;
    min-height: 400px;
    margin: 170px auto 0 auto;
    padding: 2rem min(10%, 12rem, 400px) 2rem min(10%, 12rem, 400px);
    border-radius: 10px;
    display: none;
    visibility: hidden;
    text-align: center;
    font-size: 4rem;
}