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

/*variables*/
:root {
  --color-green-900: hsl(183, 100%, 15%);
  --color-green-400: hsl(172, 67%, 45%);
  --color-grey-500: hsl(186, 14%, 43%);
  --color-grey-400: hsl(184, 14%, 56%);
  --color-grey-200: hsl(185, 41%, 84%);
  --color-grey-50: hsl(189, 47%, 97%);
  --color-white: hsl(0, 100%, 100%);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Space Mono", monospace;
  font-weight: 700;
  background-color: var(--color-grey-200);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

/* Calculator Container */
.calculator {
  background-color: var(--color-white);
  border-radius: 1.5rem;
  padding: 2rem;
  max-width: 920px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  box-shadow: 0 20px 30px rgba(0, 0, 0, 0.05);
}

/* Input Section Styles */
.calculator__input-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  color: var(--color-grey-500);
  font-size: 0.9rem;
}

.input-wrapper {
  position: relative;
}

input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  background-color: var(--color-grey-50);
  border: 2px solid transparent;
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1.5rem;
  text-align: right;
  color: var(--color-green-900);
  outline: none;
}

input:focus {
  border-color: var(--color-grey-200);
}

/* Remove arrows/spinners from number inputs */
/* For Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* For Firefox */
input[type="number"] {
  -moz-appearance: textfield;
}

/* Bill input icon */
.input-wrapper.bill-input::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1rem;
  height: 1rem;
  background-image: url("../images/icon-dollar.svg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

/* People input icon */
.input-wrapper.people-input::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1rem;
  height: 1rem;
  background-image: url("../images/icon-person.svg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

/* Tip Grid */
.tip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.tip-btn {
  background-color: var(--color-green-900);
  color: var(--color-white);
  border: none;
  padding: 0.75rem;
  font-family: inherit;
  font-size: 1.25rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tip-btn:hover {
  background-color: var(--color-green-400);
  color: var(--color-green-900);
}

.tip-btn:active {
  background-color: var(--color-green-400);
  color: var(--color-green-900);
}

.custom-tip {
  font-size: 1.25rem;
  padding: 0.75rem;
  text-align: center;
}

/* Results Section */
.calculator__result-section {
  background-color: var(--color-green-900);
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-group {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.result-label {
  color: var(--color-white);
}

.per-person {
  color: var(--color-grey-400);
  font-size: 0.8rem;
}

.amount {
  color: var(--color-green-400);
  font-size: 2.5rem;
}

.reset-btn {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--color-green-400);
  color: var(--color-green-900);
  border: none;
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1.25rem;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: auto;
}

.reset-btn:hover {
  background-color: var(--color-grey-500);
}

/* Attribution */
.attribution {
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--color-grey-500);
}

.attribution a {
  color: var(--color-green-900);
}

/* Responsive Design */
@media (max-width: 768px) {
  .calculator {
    grid-template-columns: 1fr;
    max-width: 500px;
  }

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

@media (max-width: 375px) {
  .tip-grid {
    grid-template-columns: 1fr;
  }
}

/* Logo */
.logo {
  margin-bottom: 2.5rem;
  text-align: center;
  color: var(--color-green-900);
  letter-spacing: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 1.5rem;
}