:root {

    /* Primary */
    --green-400: hsl(172, 67%, 45%);

    /* Neutral */
    --green-800: #085C61;
    --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%);

    /* Typography */
    --fs-normal: 1rem;
    --fs-form-inputs: 1.5rem;
    --fw: 700;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

button {
    color: var(--white);
    width: 100%;
    
    background: var(--green-900);
    padding: 1rem;
    border: none;
    font-size: var(--fs-form-inputs);
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    display: inline-block;
    color: var(--green-900);
    width: 100%;
    padding: 1rem;
    padding-left: 2.5rem;
    border: 1px solid var(--green-400);
    background-color: var(--grey-50) !important;
    -moz-appearance: textfield;
}

input,
button {
    font: inherit;
    border-radius: 0.2rem;
    font-size: var(--fs-form-inputs);
    height: 3rem;
    border-radius: 0.3125rem;
}


body {
    font-family: space mono;
    font-weight: var(--fw);
    font-size: var(--fs-normal);
    color: var(--green-900);
    background: var(--grey-200);
}

.calculator-container {
    background-color: var(--white);
    border-radius: 1.5625rem;
}

form {
    margin: 2rem 1.5rem;
    padding-top: 2rem;
}


label {
    color: var(--grey-500);
}

#billInput {
    background: url(/icon-dollar.svg) no-repeat;
    background-position: 1.5% 50%;
    margin-bottom: 38px;
}

#peopleInput {
    background: url(/icon-person.svg) no-repeat;
    background-position: 1.5% 50%;
}

.header-image {
    text-align: center;
    margin-top: 2.5rem;
    margin-bottom: 2rem;
}

.total-container {
    background-color: var(--green-900);
    color: var(--white);
    border-radius: 0.9375rem;
    padding: 1.97rem 1.44rem 1.84rem 1.66rem;
    margin: 2rem 1.5rem;
}

.tip-amount {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.total-amount-container {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.total-amount,
.total-per-person {
    font-size: 2rem;
    color: var(--green-400);
}


.reset-button {
    background-color: var(--green-800);
    color: var(--green-900);
}

.tip-section {
    display: grid;
    grid-template-columns: repeat(2, 9.1875rem);
    grid-template-rows: repeat(3, 3rem);
    gap: 1rem;
}

.tip-container {
    margin-bottom: 2rem;
    width: 100%;
}

.select-tip-button,
.custom-input {
    font-size: 1.5rem;
}

small {
    color: var(--green-400);
}