: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%);
}

* {
  font-family: "Space Mono", monospace;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--light-grayish-cyan);
  font-family: "Space Mono", monospace;
  display: flex;
  height: 100vh;
  flex-direction: column;
}

#title {
  text-align: center;
  padding-top: 84px;
}

#title p {
  font-size: 24px;
  font-weight: bold;
  letter-spacing: 11px;
}

.divider {
  width: 5%;
}

.container {
  background-color: var(--white);
  border-radius: 25px;
  display: flex;
  width: 800px;
  margin: auto;
  padding: 30px;
}

.container > div {
  flex: 1;
}

.bill-section,
.tip-section,
.result-section > div {
  margin-bottom: 32px;
  margin-top: 18px;
}

.bill-section input,
.people-section input {
  width: 100%;
  font-size: 32px;
  text-align: right;
}

.tip-section input {
  width: 30%;
  height: 40px;
  text-align: center;
  margin-bottom: 18px;
  border-radius: 5px;
  background-color: var(--very-dark-cyan);
  color: var(--light-grayish-cyan);
  font-size: 20px;
}

.people-title {
  display: flex;
  justify-content: space-between;
}

input {
  border: none;
}

input[type="text"],
input[type="number"] {
  background-color: var(--very-light-grayish-cyan);
  color: var(--light-grayish-cyan);
}

.result-section {
  background-color: var(--very-dark-cyan);
  border-radius: 15px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-section p {
  color: var(--light-grayish-cyan);
}

.result-section input {
  width: 100%;
  font-size: 24px;
  height: 48px;
  background-color: var(--very-dark-cyan);
}

.result-section-container {
  display: flex;
  justify-content: space-between;
  margin-bottom: 60px;
}

#tipPerPerson,
#totalPerPerson {
  color: var(--strong-cyan);
  font-size: 40px;
  font-weight: bold;
}

.result-section-container-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.opaque-text {
  color: var(--grayish-cyan);
  letter-spacing: 1px;
  font-size: 12px;
  opacity: 0.5;
}

#dollar-icon {
  background-image: url(./images/icon-dollar.svg);
}

.active-button {
  background-color: var(--strong-cyan) !important;
}

#error {
  color: red;
}

@media screen and (max-width: 800px) {
  .container {
    flex-direction: column;
    max-width: 400px;
    width: 98%;
  }

  .bill-section,
  .tip-section,
  .result-section > div {
    margin-bottom: 8px;
  }
}