/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
}

/* Remove input number incrementation arrows */
input[type=number]::-webkit-inner-spin-button, input[type=number]::-webkit-outer-spin-button { 
  -webkit-appearance: none; 
}

input[type=number] {
  -moz-appearance: textfield;
}

/*
Table of Contents:

#Format
#Title heading
#Calculator Body
#Bill
#Select Tip
#People
#Result
#Media Queries
#JS Dynamic States
*/

/* //////////////////#Format////////////////// */
* {
  font-family: 'Space Mono', monospace;
  font-size: 15px;
  font-weight: 700;
  color: hsl(186, 25%, 38%);
}

body {
  background: hsl(185, 41%, 84%);
}

.title {
  color: hsl(184, 15%, 38%);
}

.display {
  text-align: end;
  width: clamp(225px, 100%, 370px);
  height: 45px;
  border-radius: 5px;
  border: none;
  background:hsl(180, 9%, 96%);
  padding: 5px 15px;
  font-size: 24px;
  box-shadow: 0 0 3px hsl(180, 9%, 71%);
}

.display::placeholder {
  color:hsl(180, 9%, 71%);
}

.input-flexbox {
  display: flex;
  justify-content: space-between;
}

/* //////////////////#Title Heading////////////////// */
.heading {
  text-align: center;
  letter-spacing: .4rem;
  padding-top: 2vh;
  padding-bottom: 3vh;
}

.heading__title {
  font-size: 24px;
}

/* //////////////////#Calculator Body////////////////// */
.calculator {
  background: hsl(0, 0%, 100%);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 0 3px hsl(180, 9%, 71%);
  margin-bottom: 50px;
}

/* //////////////////#Bill////////////////// */
.title {
  margin: 0 0 3px 0;
}

.display--bill {
  background-image: url("images/icon-dollar.svg");
  background-repeat: no-repeat;
  background-position: 15px 15px;
}

.display--bill {
  outline-color:hsl(172, 83%, 55%);
}

/* //////////////////#Select Tip////////////////// */
.calculator__select-tip {
  margin-top: 30px;
  max-width: 370px;
}

.select-tip__buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.btn {
  height: 50px;
  width: 150px;
  margin-bottom: 10px;
  border: none;
  border-radius: 4px;
  font-size: 24px;
  color: white;
  background:hsl(186, 29%, 26%);
  box-shadow: 0 0 3px hsl(180, 9%, 71%);
}

.btn__tip:active {
  border-style: inset; 
  border-color:hsl(186, 56%, 69%);
  height: 48px;
  width: 148px;
}

.display--customtip {
  background:hsl(180, 10%, 92%);
  color:hsl(186, 25%, 38%);
  font-size: 24px;
  height: 50px;
  width: 150px;
  margin-bottom: 10px;
  border-radius: 3px;
  box-shadow: 0 0 3px hsl(180, 9%, 71%);
  text-align: center;
}

.display--customtip::after {
  content: "%";
  background-color: white;
  color: red;
}

.display--customtip:focus {
  outline: solid 2px hsl(172, 67%, 45%);
}

/* //////////////////#People////////////////// */
.calculator__people {
  margin-top: 30px;
}

.display--people {
  background-image: url("images/icon-person.svg");
  background-repeat: no-repeat;
  background-position: 15px 15px;
}

.display--people {
  outline-color:hsl(172, 83%, 55%);
}

/* //////////////////#Result////////////////// */
.calculator__result {
  background:hsl(186, 29%, 26%);
  color: white;
  border-radius: 7px;
  margin-top: 30px;
  padding: 20px;
  box-shadow: 0 0 4px hsl(192, 5%, 57%);
}

.calculator__tip-amount, .calculator__total-owed {
  display: flex;
  justify-content: space-between;
  margin: 10px 0 30px 0;
}

.title__result {
  color: white;
}

.result__subtitle {
  color:hsl(180, 21%, 56%);
}

.result__number {
  color:hsl(172, 67%, 45%);
  font-size: 30px;
}

.btn__reset {
  width: 100%;
  height: 40px;
  font-size: 20px;
  color: hsl(185, 29%, 33%);
  background:hsl(174, 29%, 38%);
  box-shadow: 0 0 2px hsl(172, 58%, 31%);
  margin-top: 20px;
}

.btn__reset:active {
  border-style: inset;
  border-color: hsl(186, 45%, 63%);
  height: 39px;
  margin-bottom: 11px;
  width: 99%;
  background-color:hsl(172, 83%, 55%);
  box-shadow: 0 0 2px hsl(172, 83%, 55%);
  color: hsl(186, 25%, 38%);
}

/* //////////////////Media Queries////////////////// */
@media only screen and (max-width: 360px) {
  .btn__tip {
    width: 125px;
  }

  .btn__tip:active {
    width: 124px;
    margin-bottom: 12px;
  }

  .display--customtip {
    width: 125px;
    padding-right: 20px;
  }
}

@media only screen and (min-width: 415px) {
  .calculator {
    margin: 0 auto 50px;
    width: 420px;
  }
  
  .btn__tip {
    width: 115px;
  }

  .btn__tip:active {
    width: 114px;
  }

  .display--customtip {
    width: 115px;
    letter-spacing: -.5px;
  }
}

@media only screen and (min-width: 900px) {
  .container {
    padding-top: 5vh;
  }
  
  .heading {
    padding-top: 10vh;
  }
  
  .calculator {
    margin: 0 auto;
    width: 840px;
    display: flex;
    justify-content: space-between;
  }

  .btn__tip:active {
    margin-right: 1px;
  }

  .calculator__result {
    height: 100%;
    margin: 0;
    width: 370px;
  }

  .calculator__tip-amount, .calculator__total-owed {
    margin: 20px 0 30px 0;
  }

  .btn__reset {
    margin-top: 85px;
    height: 50px;
  }

  .btn__reset:active {
    height: 49px;
    margin-bottom: 11px;
    width: 99%;
  }

  .result__number {
    font-size: 35px;
  }
}

@media (hover: hover) {
  .display--customtip:hover {
    outline: solid 2px hsl(172, 83%, 55%);
  }

  .btn:hover {
    background-color:hsl(172, 83%, 55%);
    box-shadow: 0 0 2px hsl(172, 83%, 55%);
    color: hsl(186, 25%, 38%);
  }
}

/* ////////////////// #JS Dynamic States ////////////////// */
.btn-active {
  color: hsl(186, 19%, 31%);
  background:hsl(172, 48%, 45%);
  box-shadow: 0 0 2px hsl(172, 83%, 55%);
}

.title-invalid {
  color: rgb(218, 90, 40);
  font-size: 12px;
}

.invalid-input {
  outline: rgba(218, 90, 40, 0.425) solid 3px;
}

.hidden {
  visibility: hidden;
}