@import url("https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&display=swap");

:root {
  --Green-1: hsl(172, 67%, 45%);
  --Green-2: hsl(183, 100%, 15%);
  --Grey-500: hsl(186, 14%, 43%);
  --Grey-400: hsl(184, 14%, 56%);
  --Grey-200: hsl(185, 41%, 84%);
  --Grey-50: hsl(189, 47%, 97%);
  --White: hsl(0, 100%, 100%);
  --d: #f7ce46;
}

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

body {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  background-color: var(--Grey-200);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.calculator-header {
  margin: 3rem;
}

.main-calculator {
  background-color: var(--White);
  width: 100%;
  max-width: 450px;
  padding: 2rem;
  border-radius: 25px;
}

.calculator-label {
  font-size: 1rem;
  color: var(--Grey-500);
  font-weight: bold;
}

.input-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.calculator-input {
  width: 100%;
  padding: 0.4rem 0.8rem;
  text-align: right;
  border: none;
  background-color: var(--Grey-50);
  border-radius: 5px;
}

.input-icon {
  position: absolute;
  top: 42px;
  left: 0;
  padding-left: 0.8rem;
}

.no-arrows::-webkit-inner-spin-button,
.no-arrows::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.input-label {
  color: var(--Grey-500);
}

input {
  color: var(--Green-2);
  font-weight: bold;
  font-size: 24px;
  font-family: inherit;
}

.calculator-input:hover {
  cursor: pointer;
}
.calculator-input:focus {
  outline: 2.5px solid var(--Green-1);
}

.calculator-input::placeholder {
  color: var(--Grey-400);
}

.tip-selectors {
  flex-direction: column;
  justify-content: center;
}

.tip-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 15px;
}

.tip-button {
  font-family: inherit;
  padding: 0.6rem 0em;
  font-size: 1.5rem;
  border: none;
  background-color: var(--Green-2);
  color: var(--Grey-50);
  border-radius: 5px;
  font-weight: bold;
}

.tip-button:hover {
  cursor: pointer;
  background-color: hsla(172, 67%, 45%, 0.766);
  color: var(--Green-2);
}

.tip-button.active {
  background-color: var(--Green-1);
  color: var(--Green-2);
}

.custom-tip-input {
  border: none;
  text-align: right;
  background-color: var(--Grey-50);
  border-radius: 5px;
  padding: 0.5rem;
  text-align: center;
}
.custom-tip-input::placeholder {
  color: var(--Grey-500);
  font-weight: 600;
  text-align: center;
}

.custom-tip-input:hover {
  cursor: pointer;
}
.custom-tip-input:focus {
  outline: 2.5px solid var(--Green-1);
}

.people-input-group {
  margin-top: 1.5rem;
}

.input-header {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.input-error {
  color: rgb(217, 136, 111);
  display: none;
}
.input-error.visible {
  display: inline;
}

.error-input.visible {
  outline: 2px solid rgb(217, 136, 111);
}
.input-with-icon {
  margin-top: 0.3rem;
}

.input-with-icon .input-icon {
  top: 45px;
}

.calculator-results {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  background-color: var(--Green-2);
  gap: 1.5rem;
  border-radius: 15px;
}
.result-row {
  font-family: inherit;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}
.result-value {
  font-family: inherit;
  font-size: 2rem;
  color: var(--Green-1);
}
.result-title {
  color: var(--Grey-50);
}

.result-subtitle {
  color: var(--Grey-400);
  font-size: 0.9rem;
}

.reset-button {
  border: none;
  font-family: inherit;
  font-weight: bold;
  text-transform: uppercase;
  padding: 0.7rem 0em;
  font-size: 1.3rem;
  border-radius: 10px;
}

.reset-button:disabled {
  background-color: rgb(13, 104, 109);
  color: rgb(8, 92, 97);
}
.reset-button:not(:disabled) {
  background-color: rgb(38, 194, 174);
  color: rgb(0, 71, 75);
}

.reset-button:hover {
  cursor: pointer;
}

@media screen and (min-width: 765px) {
  .main-calculator {
    max-width: 900px;
  }
  .calculator-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    gap: 30px;
  }

  .reset-button {
    margin-top: 8.5rem;
  }

  .result-value {
    font-family: inherit;
    font-size: 3rem;
    color: var(--Green-1);
  }
}