:root {
  /* colors palette */
  --placeholder-color: hsl(240, 54%, 87%);
  --bg-color: hsl(240, 54%, 97%);
  --focus-color: hsla(240, 54%, 61%, 0.6);
  --shadow-color: hsla(240, 54%, 61%, 0.2);
  --text-color: hsl(0, 0%, 20%);
  --text-color-inversed: hsl(0, 0%, 95%);
  --success-color: hsl(145, 63%, 42%);
  --success-color-desaturated: hsl(145, 0%, 42%);
  --failure-color: hsl(0, 79%, 63%);
  
  /* border-radius */
  --border-radius: 6px;
  
  /* z-index */
  --z-index-xs: 1;
  --z-index-sm: 10;
  --z-index-md: 100;
  
  /* easing */
  --easing: cubic-bezier(0.25, 0.01, 0.25, 1);
  
  /* transition durations */
  --transition-duration-step-1: 450ms;
  --transition-duration-step-2: 300ms;
  --transition-duration-step-3: 300ms;
  
  /* transition delays */
  --transition-delay-step-2: calc(var(--transition-duration-step-1));
  --transition-delay-step-3: calc(
    var(--transition-duration-step-1) + var(--transition-duration-step-2)
  );
  
  /* transition properties */
  --transition-step-1: var(--transition-duration-step-1) var(--easing);
  --transition-step-2: var(--transition-duration-step-2) var(--easing)
    var(--transition-delay-step-2);
  --transition-step-3: var(--transition-duration-step-3) var(--easing)
    var(--transition-delay-step-3);
}

@font-face {
  font-family: "Zain_Bold";
  src: url("../zain_fonts/Zain_Bold.woff") format('woff');
  font-weight: bold;
}
@font-face {
  font-family: "Zain_Light";
  src: url("../zain_fonts/Zain_Light.woff") format('woff');
  font-style: light;
}

@font-face {
  font-family: "Zain_Regular";
  src: url("../zain_fonts/Zain_Regular.woff") format('woff');
  font-style: light;
}

/* General styles */
*,
*::after,
*::before {
  box-sizing: border-box;
  font-family: 'Zain_Regular', sans-serif;
}

.main {
  display: grid;
  justify-content: center;
}
.label {
  font-size: 14px;
  line-height: 15px;
  text-align: center;
  letter-spacing: 0.01em;
  color:  #fff5f5;
}
.label.is-muted {
  color: #828282;
}
.animation-controls {
  margin-top: 55px;
}
.animation-controls__content {
  display: grid;
  grid-auto-flow: column;
  justify-content: center;
  gap: 6px;
}
.btn {
  min-width: 90px;
  padding: 9px 0;
  border: 0;
  border-radius: 6px;
  font-size: 14px;
  line-height: 15px;
  letter-spacing: 0.01em;
  font-weight: bold;
  cursor: pointer;
  transition: opacity 150ms ease-in;
}
.btn:hover,
.btn:focus {
  opacity: 0.7;
}
.btn:active {
  position: relative;
  top: 1px;
}
.btn.success-btn {
  color: #219653;
  background-color: #d3eadd;
}
.btn.failure-btn {
  color: #eb5757;
  background-color: #ffe9e0;
}
.btn.reset-btn {
  color: #6666d1;
  background-color: #f2f2f2;
}
.settings-controls {
  margin-top: 130px;
}
.settings-controls__content {
  display: grid;
  justify-content: center;
  gap: 18px;
}
.settings-controls__input {
  width: 67px;
  height: 33px;
  border: 0;
  border-radius: 6px;
  font-size: 14px;
  line-height: 15px;
  font-weight: bold;
  letter-spacing: 0.01em;
  color: #828282;
  background-color: #f2f2f2;
  text-align: center;
}
.settings-controls__label {
  font-size: 14px;
  line-height: 15px;
  letter-spacing: 0.01em;
  font-weight: bold;
  color: #828282;
}

@media (min-width: 768px) {
  .settings-controls__content {
    grid-auto-flow: column;
  }
}

/* SMS Code input styles */
/* base styles */

.fieldset {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  justify-content: center;
  column-gap: 12px;
  border-radius: 6px;
  overflow: hidden;
  will-change: transform;
  /* make shadows of inner elements visible */
  padding: 6px;
  margin: -6px -6px 40px -6px;
}
.fieldset::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  transform: translateX(-100%);
}


.box {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  width: 42px;
  border-radius: var(--border-radius);
  box-shadow: 0 0 6px 1px #047072;
  overflow: hidden;
  will-change: transform;
}
.box:focus-within {
  box-shadow: 0 0 6px 1px #07c2c5, 0 0 0 2px #07c2c5;
}
.box::before,
.box::after {
  content: "";
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  border-radius: var(--border-radius);
  overflow: hidden;
}
.box::before {
  background: var(--bg-color);
  z-index: var(--z-index-xs);
  transition: background-color var(--transition-step-1);
}
.box::after {
  transform: translateY(100%);
  background-color: var(--success-color-desaturated);
  opacity: 0;
  z-index: var(--z-index-sm);
  transition: transform var(--transition-step-1),
    opacity var(--transition-step-1), background-color var(--transition-step-1);
}

.field {
  position: relative;
  border: 0;
  outline: 0;
  font-size: 25.21px;
  line-height: 42px;
  color: #047072;
  background-color: transparent;
  text-align: center;
  z-index: var(--z-index-md);
}
.field::placeholder {
  color: var(--placeholder-color);
}

/* animate-success styles  */

.animate-success.fieldset {
  padding: 0;
  margin: 0;
}
.animate-success.fieldset::before {
  background-color: var(--success-color);
  transform: translateX(0);
  transition: transform var(--transition-step-2);
}

.animate-success > .box {
  box-shadow: none;
  transition: transform var(--transition-step-3);
}
.animate-success > .box:nth-child(1) {
  transform: translateX(24px);
}
.animate-success > .box:nth-child(2) {
  transform: translateX(12px);
}
.animate-success > .box:nth-child(4) {
  transform: translateX(-12px);
}
.animate-success > .box:nth-child(5) {
  transform: translateX(-24px);
}

.animate-success > .box::before {
  background-color: transparent;
}
.animate-success > .box::after {
  background-color: var(--success-color);
  transform: translateY(0);
  opacity: 1;
}

.animate-success > .box > .field, 
.animate-success > .box > .field::placeholder {
  color: var(--text-color-inversed);
  transition: color var(--transition-step-1);
}

/* animate-failure styles  */

.animate-failure.fieldset {
  animation-name: shaking;
  animation-duration: var(--transition-duration-step-2);
  animation-timing-function: var(--easing);
  animation-delay: var(--transition-delay-step-2);
}

.animate-failure > .box::before {
  background-color: transparent;
}
.animate-failure > .box::after {
  background-color: var(--failure-color);
  transform: translateY(0);
  opacity: 1;
}

.animate-failure > .box > .field,
.animate-failure > .box > .field::placeholder {
  color: var(--text-color-inversed);
  transition: color var(--transition-step-1);
}

@keyframes shaking {
  0%,
  100% {
    transform: translateX(0);
  }

  25%,
  75% {
    transform: translateX(10px);
  }

  50% {
    transform: translateX(-10px);
  }
}
/* End SMS Code input styles */