@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&display=swap');

:root {
    /*  Colours */
    --Green-400: hsl(172, 67%, 45%);
    --Green-900: hsl(183, 100%, 15%);
    --Grey-500: hsl(186, 14%, 43%);
    --Grey-400: hsl(184, 14%, 56%);
    --Grey-200: hsl(185, 41%, 84%);
    --Grey-50: hsl(189, 47%, 97%);
    --White: hsl(0, 100%, 100%);

}
body {
    font-family: 'Space Mono', monospace;
    background-color: var(--Grey-200);
    color: var(--Grey-500);
    display: grid;
    place-items: center;
    min-height: 100vh;
    margin: auto;
}

h1 {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 3rem auto;
}

.bill__calculator--container {
    background-color: var(--White);
    border-radius: 25px;
    min-height: 100vh;
    padding: 2rem;
    font-weight: 700;
}

.bill__calculator--input, 
.bill__calculator--people {
    position: relative;
    display: flex;
    align-items: center;    
}

.bill__calculator--input input , 
.bill__calculator--people input {
    flex: 1;
    border-radius: 5px;
    border: none;
    background-color: var(--Grey-50);
    padding: 0.1rem 1rem;
    outline: none;
    text-align: right;
    font-size: 2rem;
    margin-bottom: 2rem;
    margin-top: 0.3rem;
    color: var(--Green-900);
    cursor: pointer;
}

.left-symbol {
    position: absolute;
    left: 16px;
    top: 27px;
    
}

.tip__buttons {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    margin-top: 1rem;
    width: 100%;
    
}

.tip__button {
    background-color: var(--Green-900);
    color: var(--White);
    border: none;
    border-radius: 5px;
    padding: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s;
}

.tip__button:hover {
    background-color: var(--Green-400);
    color: var(--Green-900);
}

.tip__buttons input {
    border: none;
    text-align: right;
    border-radius: 5px;
    padding: 0 1rem;
    color: var(--Green-500);
    background-color: var(--Grey-50);
    font-size: 1.5rem;
    cursor: pointer;
}

.tip__buttons input:focus, 
.bill__calculator--input input:focus, 
.bill__calculator--people input:focus {
    outline: none;
    border: 2px solid var(--Green-400);

}

.bill__calculator--results {
    background-color: var(--Green-900);
    border-radius: 15px;
    padding: 2.5rem 1.5rem;
    color: var(--White);
    font-weight: 700;
    width: 100%;
}

.bill__calculator--tip-amount, 
.bill__calculator--total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    
}

.tip-per-person, 
.total-per-person {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.per-person {
    font-size: 1rem;
    color: var(--Grey-500);
}

.total-tip, 
.total-amount {
    font-size: 3rem;
    color: var(--Green-400);
}

.dollar-sign {
    font-size: 3rem;
    color: var(--Green-400);
}

.reset {
    background-color: var(--Green-400);
    color: var(--Green-900);
    border: none;
    border-radius: 5px;
    padding: 0.7rem;
    text-transform: uppercase;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
    text-align: center;  
}

.reset:hover {
    background-color: var(--Grey-200);
    color: var(--Green-900);
}

.people-error {
    display: flex;
    justify-content: space-between;
}

.error {
    color: rgb(255, 0, 0);
}

.active {
    background-color: var(--Green-400);
    color: var(--Green-900);
}

#people__input.active {
    border: 2px solid red;
}


@media screen and (min-width: 62rem) {
    body {
        max-width: 62rem;
        
    }
    h1 {
        margin-top: 0;
        margin-bottom: 5rem;
    }
    .bill__calculator--container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
        min-height: auto;
        min-width: 58rem;
        padding: 2rem 1.9rem 2rem 2.5rem;
    }
    .bill__calculator--results {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .tip__buttons {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    } 
}