*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
--clr-accent: hsl(172, 67%, 45%);
--clr-primary: hsl(183, 100%, 15%);

}
 body {
     padding: 0;
     margin: 0;
     font-family: 'Space Mono', monospace;
     line-height: 1.6;
     color: var(--clr-primary);
     font-size: 24px;
 }


.main {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: hsl(185, 41%, 84%);
}

.logo {
    padding: 2em;
    width: 100%;
    display: flex;
    justify-content: center;
}

.input-text {
    font-size: .5em;
    font-weight: 700;
}

.result-text {
    font-size: .5em;
    font-weight: 400;
    color: white;
}

.result-number {
    color: var(--clr-accent);
}

.input {
    font-family: inherit;
    color: hsl(183, 100%, 15%);
    font-weight: 700;
    display: block;
    width: 100%;
    border: none; 
    background-color: hsl(189, 41%, 97%);
    padding: .8em;
    text-align: right;
}

.bill-input {
    background-image: url("images/icon-dollar.svg");
    background-repeat: no-repeat;
    background-position: left 5px top 50%;
}
.people-input {
    background-image: url("images/icon-person.svg");
    background-repeat: no-repeat;
    background-position: left 5px top 50%;
}
.result-subtitle {
    display: block;
    color:  hsl(185, 41%, 84%);
    font-weight: 400;
}

.validation {
   font-size: .7em;
   border: 1px solid #ff8a44;
   text-align: right;
   transform: scale(0, 0);
   transition: transform 200ms ease-in-out;
}

.validation-toggled {
    transform: scale(1, 1);
}

.btn{
    font-size: .7em;
    border: none;
    /* width: 8em; */
    height: 2.5em;
    flex: 1 1 8em;
    color: white;
    border-radius: 5px;
}
.btn:hover,
.btn:focus,
.btn:active {
    background-color: hsl(172, 67%, 45%);
}

.btn-dark {
    background-color:hsl(183, 100%, 15%);
}

.btn-light {
    background-color:hsl(189, 41%, 97%);
    color: hsl(184, 14%, 56%);
}

.reset {
    width: 100%;
    grid-column: 1 / -1;
    background-color: hsl(172, 67%, 45%);
    opacity: 30%;
    color: hsl(183, 100%, 15%);
    text-transform: uppercase;
}

.reset:hover,
.reset:focus,
.reset:active {
    /* background-color: hsl(172, 67%, 45%); */
    opacity: 1;
}

/* BEGIN CARD */

.tip-card {
    border-radius: 25px;
    background-color: white;
    width: 100%;
    max-width: 400px;
}

.container {
    padding: .8em;
}


.btn-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 5px;
}

.tip-result {
    display: grid;
    grid-template-columns: repeat(2, auto);
    /* grid-column-gap: 5em; */
    background-color: hsl(183, 100%, 15%);
    border-radius: 20px;
    padding: .8em;
}

.result-number {
    margin: .7em;
}


@media screen and (min-width: 768px) {
    .main {
        height: 100vh;
    }
    .tip-card {
        display: flex;
        max-width: 90%;
         height: auto;
    }
    .tip-inputs {
        flex: 1 0 50%;
    }
    .tip-result {
        flex: 1 1 50%;
        grid-template-rows: repeat(3, 1fr);
    }
    .reset {
        grid-row: -1;
    }
}

@media screen and (min-width: 900px) {
    .tip-card {
        max-width: 70%;
    }
}