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



body {
  font-family: Space Mono;
}


:root {
  --Very-dark-cyan: hsl(183, 100%, 15%);
  --Dark-grayish-cyan: hsl(186, 14%, 43%);
  --Grayish-cyan: hsl(184, 14%, 56%);
  --Light-grayish-cyan: hsl(185, 41%, 84%);
  --Very-light-grayish-cyan: hsl(189, 41%, 97%);
  --White: hsl(0, 0%, 100%);

  --fw-bolder: 700;
  --fw-bold: 500;
  --fw-light: 400;

  --bdr: 1em;


} 

h1 {
  color: #2CBBA9;
}

h5 {
  padding-bottom: .7em;
}

p, h5{
  color: var(--Dark-grayish-cyan);
}

.logo {
  padding: 1em 0;
}

.App {
  display: flex;
  align-items: center;
  flex-direction: column;
  height: 100vh;
  justify-content: center;
  background-color: var(--Light-grayish-cyan);
}

.container {
  width: 650px;
  background-color: var(--White);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  border-radius: var(--bdr);
  padding: 1.5em;
}

.tip-calc-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: .5em;
}

label {
  position: relative;
}

.inputOverlay {
  position: absolute;
  top: 2px;
  left: -4px;
  padding-left: 12px;
  color: var(--clr-Dark-gray);
  font-size: var(--fs-p);
  font-weight: var(--fw-bolder);
}

input {
  font: inherit;
  outline: none;
  text-align: right;
  background-color: var(--Very-light-grayish-cyan);
  color: #074C4F;
  padding: 0.5em 0.7em;
  outline: none;
  cursor: pointer;
  width: 86%;
  border: none;
  font-weight: var(--fw-bolder);
  border-radius: 0.4em;
}


input:focus {
  border: 2px #9FE8DF solid;
}


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

[type="number"] {
  -moz-appearance: textfield;
}

.selection-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  width: 86%;
}

.selection {
  background-color: var(--Very-dark-cyan);
  padding: .3em .5em;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  color: var(--White);
  font-weight: var(--fw-bolder);
  font-size: 1rem;
}

.custom {
  color: var(--Dark-grayish-cyan);
  background-color: var(--Very-light-grayish-cyan);
  width: 100%;
}


.tip-amount-container, .total {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.span {
  display: flex;
}

.tip-result-container {
  background-color: var(--Very-dark-cyan);
  padding: 1em;
  border-radius: var(--bdr);
  color: var(--White);
  display: flex;
  flex-direction: column;
  gap: 5em;
}

.people {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.error {
  color: #ECAA99;
  display: none;
  width: 45%;
  font-size: .7rem;
}

.show-error {
  display: block;
}

.show-border {
  border: 2px #ECAA99 solid;
}


.sub-container {
  display: flex;
  flex-direction: column;
  gap: 2em;
}

.name {
  color: var(--Light-grayish-cyan);
}

.reset {
  padding: .6em;
  background-color: #0D686D;
  border: none;
  border-radius: .3em;
  cursor: pointer;
  color: #045E64;
  font-size: 1.1rem;
  font-weight: var(--fw-bolder);
}

button:hover {
  background-color: #9FE8DF;
}

.show-clicked {
  background-color:#2CBBA9;
  color: var(--Very-dark-cyan);
}

@media only screen and (max-width: 665px) {
  .App {
    height: max-content;
  }

  .logo {
    padding: 2.5em 0;
  }

  .container {
    grid-template-columns: none;
    gap: 20px;
    max-width: 100%;
    border-radius: 1em 1em 0 0;
  }

  .selection {
    padding: 0.6em 0.5em; 
  }

  .tip-calc-container {
    width: 117%;
  }

  .selection-container {
    grid-template-columns: repeat(2, 1fr);
  }

  .tip-result-container {
    gap: 2em;
  }

  .error {
    width: unset;
  }

  .people {
    width: 86%;
  }

}