@import url("https://fonts.googleapis.com/css2?family=Open+Sans&display=swap");

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

:root {
  --background-color: #bbdefb;
  --blue-50: #e3f2fd;
  --blue-100: #bbdefb;
  --blue-A700: #2962ff;
  --green-50: #e8f5e9;
  --green-100: #c8e6c9;
  --green-A700: #00c853;
  --purple-50: #f3e5f5;
  --purple-100: #e1bee7;
  --purple-A700: #aa00ff;
  --orange-50: #fff3e0;
  --orange-100: #ffe0b2;
  --orange-A700: #ff6d00;
  --orange-700: #f57c00;
  --grey-900: #212121;
  --white: #ffffff;
  --round-button-active-color: #212121;
  --translate-main-slider: 100%;
  --main-slider-color: #e3f2fd;
  --translate-filters-slider: 0;
  --filters-container-height: 3.8rem;
  --filters-wrapper-opacity: 1;
}

html {
  font-size: 62.5%;
}

html,
body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: background-color 0.4s ease-in-out;
  background-color: var(--background-color);
}

button {
  border: none;
  cursor: pointer;
  background-color: transparent;
  outline: none;
}

nav.amazing-tabs {
  background-color: var(--white);
  border-radius: 2.5rem;
  user-select: none;
  padding-top: 1rem;
}

.main-tabs-container {
  padding: 0 1rem 1rem 1rem;
}

.main-tabs-wrapper {
  position: relative;
}

ul.main-tabs,
ul.filter-tabs {
  list-style-type: none;
  display: flex;
}

ul.main-tabs li {
  display: inline-flex;
  position: relative;
  padding: 1.5rem;
  z-index: 1;
}

.avatar,
.avatar img {
  height: 4rem;
  width: 4rem;
  border-radius: 50%;
  pointer-events: none;
}

.avatar img {
  object-fit: cover;
}

.round-button {
  height: 4.8rem;
  width: 4.8rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--grey-900);
  transition: color 0.2s ease-in-out;
}

.round-button:hover,
.round-button.active {
  color: var(--round-button-active-color);
}

.round-button svg {
  pointer-events: none;
  height: 2.8rem;
  width: 2.8rem;
  transform: translate(0, 0);
}

.main-slider {
  pointer-events: none;
  position: absolute;
  top: 0;
  left: 0;
  padding: 1.5rem;
  z-index: 0;
  transition: transform 0.4s ease-in-out;
  transform: translateX(var(--translate-main-slider));
}

.main-slider-circle {
  height: 4.8rem;
  width: 4.8rem;
  border-radius: 50%;
  transition: background-color 0.4s ease-in-out;
  background-color: var(--main-slider-color);
}

.animate-jello {
  animation: jello-horizontal 0.9s both;
}

@keyframes jello-horizontal {
  0% {
    transform: scale3d(1, 1, 1);
  }
  30% {
    transform: scale3d(1.25, 0.75, 1);
  }
  40% {
    transform: scale3d(0.75, 1.25, 1);
  }
  50% {
    transform: scale3d(1.15, 0.85, 1);
  }
  65% {
    transform: scale3d(0.95, 1.05, 1);
  }
  75% {
    transform: scale3d(1.05, 0.95, 1);
  }
  100% {
    transform: scale3d(1, 1, 1);
  }
}

.filters-container {
  overflow: hidden;
  padding: 0 3rem;
  transition: max-height 0.4s ease-in-out;
  max-height: var(--filters-container-height);
}

.filters-wrapper {
  position: relative;
  transition: opacity 0.2s ease-in-out;
  opacity: var(--filters-wrapper-opacity);
}

.filter-tabs {
  border-radius: 1rem;
  padding: 0.3rem;
  overflow: hidden;
  background-color: var(--orange-50);
}

.filter-tabs li {
  position: relative;
  z-index: 1;
  display: flex;
  flex: 1 0 33.33%;
}

.filter-button {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.8rem;
  flex-grow: 1;
  height: 3rem;
  padding: 0 1.5rem;
  color: var(--orange-700);
  font-family: "Open Sans", sans-serif;
  font-weight: 400;
  font-size: 1.4rem;
}

.filter-button.filter-active {
  transition: color 0.4s ease-in-out;
  color: var(--grey-900);
}

.filter-slider {
  pointer-events: none;
  position: absolute;
  padding: 0.3rem;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.filter-slider-rect {
  height: 3rem;
  width: 33.33%;
  border-radius: 0.8rem;
  background-color: var(--white);
  box-shadow: 0 0.1rem 1rem -0.4rem rgba(0, 0, 0, 0.12);
  transition: transform 0.4s ease-in-out;
  transform: translateX(var(--translate-filters-slider));
}