@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&display=swap');
*,
*::before,
*::after{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
:root{
    /*Colors*/
    --result-btn-Green: hsl(172, 67%, 45%);
    --tip-result-bg: hsl(183, 100%, 15%);
    --primary-text-color: hsl(186, 14%, 43%);
    --bg-color: hsl(185, 41%, 84%);
    --Grey-400: hsl(184, 14%, 56%) ;
    --Grey-50: hsl(189, 47%, 97%);
    --bg-container: hsl(0, 100%, 100%);
    --red-error:rgb(202, 49, 38);
    /*Font Sizes/weight*/
    --fs: 24px;
    --fw-700:700;
    /*Spacings*/
    --spacing-0: 0;
    --spacing-100: 0.5rem;
    --spacing-200: 1rem;
    --spacing-300: 1.5rem;
    --spacing-400: 2rem;
    --spacing-500: 2.5rem;
}
body{
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    font-family: 'Space Mono',system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: var(--fw-700);
    font-size: var(--fs);
    min-height: 100vh;
    align-items: center;
    justify-items: center;
    color: var(--primary-text-color);
}
header{
    padding: var(--spacing-400);
}
.container{
    width: 100%;
    padding: var(--spacing-400);
    background-color: var(--bg-container);
    display: flex;
    flex-direction: column;
    border-radius: 1.5rem 1.5rem 0 0;
    min-height:calc(100vh - 8rem);
    gap: var(--spacing-400);
}
.tip-calculator{
    display: flex;
    flex-direction: column;
    gap: var(--spacing-400);
}
.tip-result{
    background-color: var(--tip-result-bg);
    border-radius: var(--spacing-200);
    width: 100%;
    height: auto;
    padding: var(--spacing-400);
    display: grid;
    grid-template-columns: repeat(2,1fr);
    row-gap: var(--spacing-300);
    place-content: center;
}
.tip-result button{
    grid-column: auto/ span 2;
}
h3{
    font-size: var(--spacing-300);
    color: var(--bg-container);
}
.tip-result span{
    font-size: var(--spacing-200);
    color: var(--Grey-400);
}
button{
    cursor: pointer;
    background-color: var(--tip-result-bg);
    border: none;
    font-family: 'Space Mono',system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: var(--fw-700);
    font-size: var(--fs);
    border-radius:0.3rem;
    padding: 0.3rem 0;

}
button:hover{
    background-color: var(--result-btn-Green);
    color: var(--tip-result-bg);
    filter: brightness(100%);
}
.tip-result button{
    filter: brightness(140%);
    color:rgba(39, 39, 39, 0.473);
    text-transform: uppercase;
}
.active{
    background-color: var(--result-btn-Green);
    filter: brightness(140%);
    color:rgba(39, 39, 39, 0.473);
    text-transform: uppercase;
}
.price{
    color: var(--result-btn-Green);
    font-size: var(--spacing-500);
    place-self: end;
}
.price span{
    color: var(--result-btn-Green) !important;
    font-size: var(--spacing-400) !important;
}
.container .tips{
    display: flex;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacing-200);
    
}
.flex-item{
    color: var(--bg-container);
    padding: 0.2rem ;
    width: 45%;
    
}
form{
    display: flex;
    flex-direction: column;
    gap: var(--spacing-100);
    position: relative;
}
form div img{
    width:1rem;  
    height: auto;
    margin-inline-start:var(--spacing-200) ;
    aspect-ratio: 1/1;
    justify-self: center;
    align-self: center;

}
form div{
    width: 100%;
    background-color: var(--Grey-50);
    border-radius:0.3rem;
    display: flex;
    position: relative;
}
input{
    background-color: var(--Grey-50);
    border: none;
    cursor:pointer;
    font-family: 'Space Mono',system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: var(--fw-700);
    font-size: var(--fs);
}
form div input{
    text-align: end;
    padding: var(--spacing-100);
    width: 90%;
    outline: none;
}
form div input::placeholder{
    color: var(--Grey-400);
}
form div:hover,
.custom-tip:hover,
.custom-tip:focus,
form div:focus{
    outline: none;
    border: 2px solid var(--result-btn-Green);
}
.custom-tip::placeholder{
    color: var(--tip-result-bg);
    opacity: 70%;
}
.custom-tip{
    text-align: center;
    color: var(--tip-result-bg);
}
.container span,
label{
    font-size: var(--spacing-200);
}
button:hover,
button:focus{
    outline: none;
    background-color: var(--result-btn-Green);
    color: var(--tip-result-bg);
    filter: brightness(100%);
}
.error-message{
    font-size: 0.8rem !important;
    position: absolute;
    color: var(--red-error);
    right: 0;
    top: 8%;
    
}
.error{
    outline: 2px solid var(--red-error);
}
@media screen and (min-width:64rem) {
    header{
        margin: auto;
        padding-top: var(--spacing-500);
        padding-bottom: 0;
        justify-self: end;
    }
    .container{
        margin: auto;
        width: 70%;
        flex-direction: row;
        border-radius: 1.5rem ;
        min-height:max-content;
    }
    .tip-calculator{
        width: max-content;
        flex: 1;
        row-gap: 4rem;
    }
    .tip-result{
        flex: 1;
        padding: var(--spacing-500);
        row-gap: var(--spacing-500);
        place-content: start;

    }
    
    .tip-result button{
        margin-block-start: 30%;
    }
    .flex-item{
        width: 30%;
    }
    form div{
        width: 94%;
    }
    button:hover,
    button:focus{
        filter:grayscale(40%);
    }
    .active{
        background-color: var(--result-btn-Green);
        filter: brightness(100%) !important;
        filter:grayscale(40%);
        color:rgba(39, 39, 39, 0.473);
        text-transform: uppercase;
    }
    .container span{
        margin-block-end: -3rem;
    }
    #people-number-from{
        margin-block-start: 3.2rem;
    }
}