/* :root{ */
    /* --line-border-fill: #3498bd;
    --line-border-empty: #e0e0e0; */
   :root {
    --line-border-fill: #9b59b6; 
    --line-border-empty: #3d3d3d; 
    --background-color: #1c1c1c; 
    --text-color: #dcdcdc; 
}

    
    
*{
    box-sizing: border-box;
}


body{
    background-color: var(--background-color);
    font-family: 'Roboto', sans-serif ;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
}

.container{
    text-align: center;
    /* background-color: #b3c0c5; */
}

.progress-container{
    /* background-color: antiquewhite; */
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 30px;
    max-width: 100%;
    width: 350px;
}
.progress-container::before{
    content:'';
    background-color: var(--line-border-empty);
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 100%;
    z-index: -1;
    
}
.progress{
    background-color: var(--line-border-fill);
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 0%;
    z-index: -1;
    transition: 0.4s ease;
}

.circle{
    background-color: white;
    color: #999;
    border-radius: 50%;
    height: 40px;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--line-border-empty);
    transition: .4s ease;
}

.circle.active{
    border-color: var(--line-border-fill);
}
.btn{
    background-color: var(--line-border-fill);
    color: white;
    border: 0;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    padding: 8px 30px;
    margin: 5px;
    font-size: 18px;
}
.btn:active{
    transform: scale(0.98);
}
.btn:focus{
    outline: 0;
}
.btn:disabled{
    background-color: var(--line-border-empty);
    cursor: not-allowed;
}