: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%);
  --White: hsl(0, 0%, 100%);
}

body {
  font-family: "Space Mono", monospace;
  background-color: var(--Light-grayish-cyan);
}
* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
.container {
  padding-left: 15px;
  padding-right: 15px;
  margin-left: auto;
  margin-right: auto;
}
/* Small */
@media (min-width: 768px) {
  .container {
    width: 750px;
  }
}
/* Medium */
@media (min-width: 992px) {
  .container {
    width: 970px;
  }
}
/* Large */
@media (min-width: 1200px) {
  .container {
    width: 1170px;
  }
}

.all {
  margin: 60px auto;
}
.all .container .title {
  text-align: center;
  letter-spacing: 10px;
  margin-bottom: 60px;
  font-size: 30px;
  color: var(--Dark-grayish-cyan);
}
.all .container span {
  display: block;
}
.card {
  background-color: var(--White);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  padding: 25px;
  border-radius: 15px;
}
@media (max-width: 767px) {
  .card {
    flex-direction: column;
  }
}
.card .left {
  flex-basis: 47%;
  color: var(--Dark-grayish-cyan);
}
.card .left header h3 {
  margin: 0;
  font-weight: 100;
}
.card .left header form.Bill_form {
  position: relative;
}
.card .left header form.Bill_form::before {
  content: url(../images/icon-dollar.svg);
  position: absolute;
  width: 13px;
  height: 6px;
  top: 27%;
  left: 12px;
  transform: translateX(-50%);
  z-index: 1;
}
.card .left header form.Bill_form input#Bill {
  text-align: end;
  width: 100%;
  padding: 10px;
  outline: none;
  border: none;
  border-radius: 5px;
  color: gray;
  background-color: hsl(185deg 41% 84% / 39%);
}
.card .left header form.Bill_form input#Bill:focus {
  border: 2px solid var(--Strong-cyan);
  color: var(--Very-dark-cyan);
  font-weight: 700;
}
.card .left header form.Bill_form p {
  font-size: 10px;
  text-align: end;
  color: red;
  position: absolute;
  top: -25px;
  right: 0;
}

.card .left section p {
  margin-bottom: 5px;
  margin-top: 30px;
}
.card .left section .per {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(121px, 1fr));
  gap: 10px;
}
.card .left section .per button {
  background-color: var(--Very-dark-cyan);
  border: none;
  padding: 12px;
  font-size: 25px;
  font-weight: 700;
  border-radius: 5px;
  cursor: pointer;
  color: var(--Light-grayish-cyan);
}

.card .left section .per input[type="number"] {
  background-color: hsl(185deg 41% 84% / 39%);
  border: none;
  padding: 12px;
  font-size: 25px;
  font-weight: 700;
  border-radius: 5px;
  outline: none;
}
.card .left section .per input[type="number"]:focus {
  border: 2px solid var(--Strong-cyan);
  color: var(--Very-dark-cyan);
  font-weight: 700;
  background-color: var(--White);
}
.card .left footer p {
  margin-bottom: 0;
}
.card .left footer form.form {
  position: relative;
}
@media (max-width: 767px) {
  .card .left footer form.form {
    margin-bottom: 50px;
  }
}
.card .left footer form.form::before {
  content: url(../images/icon-person.svg);
  position: absolute;
  width: 13px;
  height: 6px;
  top: 22%;
  left: 12px;
  transform: translateX(-50%);
  z-index: 1;
}
.card .left footer form.form input#Number_of_People {
  text-align: end;
  width: 100%;
  padding: 10px;
  outline: none;
  border: none;
  border-radius: 5px;
  color: gray;
  background-color: hsl(185deg 41% 84% / 39%);
}
.card .left footer form.form input#Number_of_People:focus {
  border: 2px solid var(--Strong-cyan);
  color: var(--Very-dark-cyan);
  font-weight: 700;
}
.card .left footer form.form p#form_People {
  font-size: 8px;
  text-align: end;
  color: red;
  position: absolute;
  top: -21px;
  right: 0;
}

.hidden {
  display: none;
}

.card .right {
  flex-basis: 47%;
  background-color: var(--Very-dark-cyan);
  padding: 20px;
  border-radius: 10px;
}
.card .right .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}
.card .right .top .left span {
  display: block;
  color: var(--Light-grayish-cyan);
}
.card .right .top .left span:last-of-type {
  display: block;
  font-size: 12px;
  color: var(--Dark-grayish-cyan);
}
.card .right .top .right {
  padding: 0;
  text-align: end;
}
.card .right .top .right button {
  font-size: 40px;
  letter-spacing: 4px;
  border: none;
  background-color: transparent;
  color: var(--Strong-cyan);
  font-weight: 700;
}
.card .right .bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 112px;
}
.card .right .bottom .left span {
  display: block;
  color: var(--Light-grayish-cyan);
}
.card .right .bottom .left span:last-of-type {
  display: block;
  font-size: 12px;
  color: var(--Dark-grayish-cyan);
}
.card .right .bottom .right {
  padding: 0;
  text-align: end;
}
.card .right .bottom .right button {
  font-size: 40px;
  letter-spacing: 4px;
  border: none;
  background-color: transparent;
  color: var(--Strong-cyan);
  font-weight: 700;
}
.card .right form.reset input[type="reset"] {
  border-radius: 5px;
  border: none;
  outline: none;
  width: 100%;
  padding: 5px;
  text-align: center;
  font-size: 30px;
  text-transform: uppercase;
  background-color: hsl(172deg 63% 25%);
  color: var(--Very-dark-cyan);
  cursor: pointer;
}
.card .right form.reset input[type="reset"]:hover {
  background-color: var(--Strong-cyan);
}