@import url("https://fonts.googleapis.com/css2?family=Barlow+Semi+Condensed:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Barlow:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Cairo:wght@200..1000&family=Epilogue:ital,wght@0,100..900;1,100..900&family=Fraunces:ital,opsz,wght@0,9..144,100..900;1,9..144,100..900&family=Hanken+Grotesk:ital,wght@0,100..900;1,100..900&family=Josefin+Sans:ital,wght@0,100..700;1,100..700&family=Kumbh+Sans:wght@100..900&family=Libre+Franklin:ital,wght@0,100..900;1,100..900&family=Manrope:wght@200..800&family=Montserrat:ital,wght@0,100..900;1,100..900&family=Outfit:wght@100..900&family=Overpass:ital,wght@0,100..900;1,100..900&family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&family=Work+Sans:ital,wght@0,100..900;1,100..900&family=Young+Serif&display=swap");
:root {
  --Strong-cyan: hsl(172, 67%, 45%);
  --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%);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Space Mono", sans-serif;
}
body {
  background-color: var(--Very-light-grayish-cyan);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 40px;
  height: 100vh;
  margin: 0;
  padding: 0;
  background-color: var(--Light-grayish-cyan);
}
header img {
  width: 60px;
}
main {
  display: flex;
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.1);
  padding: 20px;
  width: 800px;
}

.bill-section {
  flex: 1;
  padding: 20px 30px;
}
.bill-section .bill label,
.bill-section .people label {
  display: block;
  position: relative;
  font-size: 14px;
}
.bill-section .people label {
  display: flex;
  justify-content: space-between;
}
.bill-section .people label span {
  display: none;
}
.bill-section .people label span.error {
  display: block;
  color: hsla(0, 100%, 50%, 0.8);
  font-size: 12px;
}
.bill-section .bill input,
.bill-section .people input {
  padding: 12px 24px;
  width: -webkit-fill-available;
  direction: rtl;
  margin-top: 10px;
  border: none;
  background-color: var(--Very-light-grayish-cyan);
  border-radius: 5px;
  color: var(--Very-dark-cyan);
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  caret-color: var(--Strong-cyan);
}
.bill-section .bill input::placeholder,
.bill-section .people input::placeholder {
  color: var(--Very-dark-cyan);
  font-size: 20px;
  font-weight: 700;
  opacity: 0.5;
}
.bill-section .bill input:focus,
.bill-section .people input:focus,
.bill-section .tip .tip-buttons input:focus {
  outline-color: var(--Strong-cyan);
}
.bill-section .people input.error:focus {
  outline-color: hsla(0, 100%, 50%, 0.5);
}
.bill-section .bill label::before {
  content: url(images/icon-dollar.svg);
}
.bill-section .people label::before {
  content: url(images/icon-person.svg);
}
.bill-section .bill label::before,
.bill-section .people label::before {
  position: absolute;
  left: 10px;
  top: 46px;
  color: var(--Grayish-cyan);
}
/* Hiddin Arrow */
.bill-section .bill input::-webkit-inner-spin-button,
.bill-section .people input::-webkit-inner-spin-button,
.bill-section .tip .tip-buttons input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.bill-section .tip {
  margin: 20px 0;
}
.bill-section .tip label {
  display: block;
  font-size: 14px;
}
.bill-section .tip .tip-buttons {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  place-content: center;
  margin-top: 10px;
  gap: 10px;
}
.bill-section .tip .tip-buttons button {
  background-color: var(--Very-dark-cyan);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 20px;
  font-weight: 700;
  color: white;
  padding: 8px 18px;
}
.bill-section .tip .tip-buttons input {
  padding: 0 8px;
  width: -webkit-fill-available;
  border: none;
  background-color: var(--Very-light-grayish-cyan);
  text-align: center;
  border-radius: 5px;
  color: var(--Very-dark-cyan);
  font-weight: 700;
  font-size: 20px;
  direction: rtl;
  caret-color: var(--Strong-cyan);
  cursor: pointer;
}
.bill-section .tip .tip-buttons button:hover {
  background-color: var(--Strong-cyan);
  color: var(--Very-dark-cyan);
}
.bill-section .tip .tip-buttons button.active {
  background-color: var(--Strong-cyan);
  color: var(--Very-dark-cyan);
}
.results-section {
  flex: 1;
  background-color: var(--Very-dark-cyan);
  padding: 20px 30px;
  border-radius: 10px;
}
.results-section p {
  color: white;
  font-size: 14px;
  font-weight: 700;
  margin: 0;
}
.results-section span {
  color: var(--Grayish-cyan);
  display: block;
  font-size: 12px;
}
.results-section .tip-amount {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 20px 0 40px;
}

.results-section .total-amount {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 20px 0 100px;
}

.results-section p.dollar {
  font-size: 36px;
  font-weight: 700;
  margin: 0;
  color: var(--Strong-cyan);
}

.results-section button {
  background-color: var(--Strong-cyan);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  color: var(--Very-dark-cyan);
  text-transform: uppercase;
  padding: 10px 20px;
  width: 100%;
  opacity: 0.2;
}
.results-section button.show {
  opacity: 1;
}
.results-section button:hover {
  opacity: 1;
  background-color: var(--Light-grayish-cyan);
}
@media (width<=450px) {
  body {
    margin: 80px 0 0;
  }
  header img {
    width: 70px;
  }
  main {
    flex-direction: column;
    width: auto;
    padding: 0;
  }

  .bill-section .tip .tip-buttons {
    display: grid;
    grid-template-columns: repeat(2, calc(50% - 5px));
  }
}