:root {
    --borderColor: #144fc6;
    --drankColor: #6ab3f8;
}

body {
    display: block;
    background-color: #3494e4;
    color: white;
}    

#app {
    margin: 0 auto;
    text-align: center;
}

.total {
    border: 4px solid var(--borderColor);
    border-radius: 0 0 40px 40px;
    width: 150px;
    overflow: hidden;
    margin: auto;
}

.total-cup {
    margin: 0 auto;
    color: var(--borderColor);
    height: 300px;
    display: flex;
    flex-direction: column;
}

.total-cup .remained {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: white;
    transition: .3s ease;
    flex: 1;
    
}
#remained_value {
    font-size: 1.2em;
    font-weight: bolder;
}
#remained_value::after {
    content: 'L';
}
.total-cup .drank {
    display: flex;
    visibility: hidden;
    height: 0;
    justify-content: center;
    align-items: center;
    background-color: var(--drankColor);
    font-size: 1.5em;
    font-weight: bolder;
    transition: .3s ease;
}

.total-cup .drank .percent::after {
    content: '%';
}

.cup-selector {
    margin:  auto;
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    width: 250px;
}

.cup-selector .cup {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 40px;
    height: 80px;
    border: 4px solid var(--borderColor);
    border-radius: 0 0 15px 15px;
    color: var(--borderColor);
    background-color: white;
}

.cup-selector .cup:hover {
    cursor: pointer;
}
.cup-selector .cup.selected {
    color: white;
    background-color: var(--drankColor);
}