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

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

:root {
  --bg-clr: rgb(197, 228, 231);
  --panel-clr: rgb(0, 73, 77);
  --display-clr: rgb(38, 191, 171);
  --dark-grey: rgb(94, 122, 125);
  --grey: rgb(103, 135, 138);
  --light-grey: rgb(244, 250, 250);
  --white: rgb(255, 255, 255);
  --black: rgb(0, 0, 0);
}

html {
  font-size: 16px;
}

body {
  background-color: var(--bg-clr);
  font-family: "Space Mono", monospace;
  max-width: 60rem;
}

img {
  width: 100%;
  height: auto;
}

a {
  text-decoration: none;
}

li {
  list-style: none;
}

h1 {
  color: var(--panel-clr);
  font-size: 20px;
  font-weight: bold;
  position: absolute;
  top: 2rem;
  left: 47%;
  opacity: 0.9;
}

label {
  color: var(--grey);
}

.container {
  font-family: "Space Mono", monospace;
  background-color: var(--white);
  min-width: 45rem;
  max-width: auto;
  height: 20rem;
  padding: 2rem;
  font-size: 15px;
  font-weight: bold;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 20px;
}

#bill {
  background-color: var(--light-grey);
  color: var(--panel-clr);
  font-family: "Space Mono", monospace;
  width: 19.5rem;
  height: 2rem;
  font-size: 26px;
  font-weight: bolder;
  margin-bottom: 2rem;
  text-align: end;
  border: 0px solid var(--light-grey);
  border-radius: 5px;
}

#bill::placeholder {
  color: var(--grey);
  font-size: 23px;
  opacity: 0.6;
}

.bill-container p {
  font-family: "Space Mono", monospace;
  color: var(--grey);
  opacity: 0.6;
  position: absolute;
  font-size: larger;
  margin: 5px 10px 10px 10px;
}

.errorMsg {
  color: red;
  position: relative;
  left: 9rem;
}

.pepErrorMsg {
  color: red;
  position: relative;
  left: 2rem;
}

.select-tip {
  color: var(--grey);
  font-family: "Space Mono", monospace;
}

.tip-btn {
  font-family: "Space Mono", monospace;
  background-color: var(--panel-clr);
  color: var(--white);
  width: 6rem;
  height: 2.5rem;
  text-align: center;
  font-size: 20px;
  font-weight: 900;
  margin: 8px 2px;
  border: 2px solid var(--panel-clr);
  border-radius: 6px;
}

#custom {
  font-family: "Space Mono", monospace;
  background-color: var(--light-grey);
  color: var(--panel-clr);
  width: 5.5rem;
  height: 2.1rem;
  text-align: end;
  font-size: 22px;
  font-weight: 900;
  margin: 8px 3px;
  border: 2px solid var(--light-grey);
  border-radius: 6px;
}

#custom::placeholder {
  font-size: 20px;
  text-align: center;
  color: var(--grey);
}

#people {
  background-color: var(--light-grey);
  color: var(--panel-clr);
  font-family: "Space Mono", monospace;
  width: 19.5rem;
  height: 2rem;
  font-size: 26px;
  font-weight: bolder;
  margin-bottom: 2rem;
  text-align: end;
  border: 2px solid var(--light-grey);
  border-radius: 5px;
}

.people-container i {
  color: var(--grey);
  opacity: 0.6;
  position: absolute;
  margin: 12px 10px 10px 10px;
}

#people::placeholder {
  color: var(--grey);
  font-size: 23px;
  opacity: 0.6;
}

.panel {
  background-color: var(--panel-clr);
  width: 23rem;
  height: 21.5rem;
  position: relative;
  top: -22rem;
  left: 50%;
  border-radius: 15px;
}

.tipAmount {
  color: var(--white);
  font-size: 15px;
  position: relative;
  top: 50px;
  left: 40px;
}

.totalAmount {
  color: var(--white);
  font-size: 15px;
  position: relative;
  top: 80px;
  left: 40px;
}

.tipAmount p {
  color: var(--grey);
  font-size: 13px;
  margin-top: 2px;
}

.totalAmount p {
  color: var(--grey);
  font-size: 13px;
  margin-top: 2px;
}

.displayTip {
  position: relative;
  color: var(--display-clr);
  top: -5rem;
  right: 5%;
  text-align: end;
  font-size: 2.7rem;
}

.displayTotal {
  position: relative;
  color: var(--display-clr);
  top: -3.5rem;
  right: 5%;
  font-size: 2.7rem;
  text-align: end;
}

.reset {
  background-color: var(--display-clr);
  font-family: "Space Mono", monospace;
  font-size: 18px;
  font-weight: bold;
  width: 19rem;
  height: 2.5rem;
  border: 0px;
  border-radius: 6px;
  margin: 2rem 1rem 1rem 2rem;
  cursor: pointer;
}

.reset:focus{
  opacity: 0.5;
}

.tip-btn:focus{
  background-color: var(--display-clr);
  border-color: var(--display-clr);
}

.tip-btn:hover{
  transform: scale(1.1);
}