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

:root {
    --Green400: hsl(172, 67%, 45%);
    --Green900: hsl(183, 100%, 15%);
    --Grey500: hsl(186, 14%, 43%);
    --Grey400: hsl(184, 14%, 56%);
    --Grey200: hsl(185, 41%, 84%);
    --Grey50: hsl(189, 47%, 97%);
    --White: hsl(0, 100%, 100%);
}

body{
    font-family: Space Mono;
    background-color: var(--Grey200);
}

.section {
    margin: 0 auto;
}

.section__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
    padding: 0 1rem;
}

.container__image-logo-splitter {
    padding-top: 8rem;
}

.container__card-calculator {
    max-width: 48rem;
    width: 100%;
    padding: 1rem 1rem 1rem 2rem;
    background-color: var(--White);
    border-radius: 1rem;
    display: flex;
    justify-content: space-between;
}

@media (max-width: 768px) {
   .container__card-calculator {
        display: flex;
        flex-direction: column;
        gap: 1rem;
   } 
}

.card-calculator__data {
    max-width: 23rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.data-number__input,
.data__select-tip {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

h5 {
    color: var(--Grey400);
}

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

.data-select__discount-buttons {
    display: grid;
    grid-template-columns: repeat(3, 6rem);
    grid-template-rows: repeat(2, auto);    
    gap: 0.7rem; 
}

@media (max-width: 768px) {
    .data-select__discount-buttons {
        display: grid;
        grid-template-columns: repeat(2, 6rem);
        grid-template-rows: repeat(3, auto);    
        gap: 0.7rem; 
    }
}

.select__discount-button {
    width: 6rem;
    padding: 0.3rem 0rem;
    text-align: center;
    font-family: Space Mono;
    font-size: medium;
    font-weight: bold;
    background-color: var(--Green900);
    color: var(--White);   
    border: none;
    border-radius: 0.3rem;
    cursor: pointer;
}

.select__discount-button.active {
  background-color: var(--Green400);
  color: var(--Green900);
}

.data-select__discount-buttons input {
    width: 6rem;
    padding: 0.3rem 0rem;
    text-align: center;
    font-family: Space Mono;
    font-size: medium;
    font-weight: bold;
    border: none;
    border-radius: 0.3rem;
    background-color: var(--Grey50);
    color: var(--Grey400);
}

.data-input__items {
  position: relative;
  display: inline-block;
}

.data-input__items .icon {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
}

.data__input {
    max-width: 19.5rem;
    width: 100%;
    padding: 0.3rem;
    text-align: right;
    font-family: Space Mono;
    font-size: medium;
    font-weight: bold;
    border: none;
    border-radius: 0.3rem;
    background-color: var(--Grey50);
    color: var(--Grey400);
}

.card-calculator__result {
    max-width: 25rem;
    width: 100%;
    background-color: var(--Green900);
    border-radius: 0.5rem;
    padding: 3rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.calculator-result__tip-amount,
.calculator-result__total {
    display: flex;
    justify-content: space-between;
}

.tip-amount__items h5,
.total__items h5 {
    color: var(--White);
}

.tip-amount__items p,
.total__items p {
    font-size: small;
    font-weight: bold;
    color: var(--Grey400);
}

.tip-amount__person,
.total__person {
    font-size: xx-large;
    font-weight: bolder;
    color: var(--Green400);
}

.calculator-result__button {
    height: 2rem;
    font-family: Space Mono;
    font-size: small;
    font-weight: bold;
    border: none;
    border-radius: 0.2rem;
    background-color: var(--Green400);   
    color: var(--Green900); 
    cursor: pointer;
    margin-top: 2rem;
}