:root {
  /* ### Primary */

  --lime-green: hsl(163, 72%, 41%);
  --bright-red: hsl(356, 69%, 56%);

  --facebook: hsl(208, 92%, 53%);
  --twitter: hsl(203, 89%, 53%);
  --instagram-gradient: linear-gradient(
    to right,
    hsl(37, 97%, 70%),
    hsl(329, 70%, 58%)
  );
  --youtube: hsl(348, 97%, 39%);

  /* #### Dark Theme */

  --toggle-gradient: linear-gradient(
    to right,
    hsl(210, 78%, 56%),
    hsl(146, 68%, 55%)
  );

  /* #### Light Theme */

  --toggle-light: hsl(230, 22%, 74%);

  /* ### Neutral */

  /* #### Dark Theme */

  --very-dark-blue: hsl(230, 17%, 14%);
  --very-dark-blue-top: hsl(232, 19%, 15%);
  --dark-desaturated-blue: hsl(228, 28%, 20%);
  --desaturated-blue: hsl(228, 34%, 66%);
  --white: hsl(0, 0%, 100%);

  /* #### Light Theme */

  --white-light: hsl(0, 0%, 100%);
  --very-pale-blue: hsl(225, 100%, 98%);
  --light-grayish-blue: hsl(227, 47%, 96%);
  --dark-grayish-blue: hsl(228, 12%, 44%);
  --very-dark-blue-text: hsl(230, 17%, 14%);
}

html {
  font-size: 62.5%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

body {
  font-family: "Inter", sans-serif;
  font-size: 1.6rem;
  font-weight: 400;
  min-height: 100vh;
  margin: 0;
  color: var(--very-dark-blue-text);
  background-color: var(--white-light);
  transition: background-color 0.3s ease-in-out;
}

body.dark-theme {
  color: var(--white);
  background-color: var(--very-dark-blue);
}

.str-gray {
  color: var(--toggle-light);
}

.percent {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.percent .down {
  color: var(--bright-red);
}

.toggle-icon {
  position: relative;
  width: 4.5rem;
  height: 2.5rem;
  display: block;
  border-radius: 50px;
  background-image: var(--toggle-gradient);
  background-size: 200%;
  background-position: 0 0;
  background-repeat: no-repeat;
  transition: background-position 0.3s ease-in-out;
  cursor: pointer;
}

.toggle-icon::after {
  content: "";
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  background-color: var(--white);
  position: absolute;
  top: 50%;
  left: 0.35rem;
  transform: translateY(-50%);
  transition: all 0.3s ease-in-out;
}

body.dark-theme .toggle-icon {
  background-position: 100% 0;
}

body.dark-theme .toggle-icon::after {
  right: 0.35rem;
  left: auto;
  background-color: var(--very-dark-blue);
}

.container {
  max-width: 111rem;
  margin: 0 auto;
  padding: 0 2.4rem;
}

section.overview .info {
  background-color: var(--light-grayish-blue);
  height: 15rem;
  padding: 2.4rem;
}

body.dark-theme section.overview .info {
  background-color: var(--dark-desaturated-blue);
}

section.overview .info .header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.toggle-mode {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.8rem;
}

section.overview .header h1 {
  font-size: 2.6rem;
  font-weight: 700;
}

.heading {
  position: relative;
}

.header_substring {
  position: absolute;
  margin-top: 0.5rem;
}

ul.cards {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-top: -4rem;
}

.cards li {
  background-color: var(--light-grayish-blue);
  border-radius: 0.5rem;
  width: 100%;
  max-width: 260px;
  text-align: center;
  margin-bottom: 2rem;
}

body.dark-theme ul.cards li {
  background-color: var(--dark-desaturated-blue);
}

.cards li.card .header {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  gap: 1rem;
}

.cards li.card .card-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0;
}

.cards li.card .card-info h2 {
  font-size: 4rem;
  font-weight: 700;
}

.cards li.card .card-info p {
  margin: 0;
}

.cards li.card .footer {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  align-items: center;
}

.cards li.card .footer p {
  color: var(--lime-green);
}

.cards li.card::before {
  content: "";
  width: 100%;
  height: 0.5rem;
  background-color: var(--lime-green);
  display: block;
  border-radius: 0.5rem;
  margin-bottom: 2rem;
}

.cards li.card.facebook::before {
  background-color: var(--facebook);
}

.cards li.card.twitter::before {
  background-color: var(--twitter);
}

.cards li.card.instagram::before {
  background-image: var(--instagram-gradient);
}

.cards li.card.youtube::before {
  background-color: var(--youtube);
}

.overview-today {
  margin-top: 3rem;
}

.overview_cards {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin: 2rem 0;
}

.overview_cards li {
  background-color: var(--light-grayish-blue);
  border-radius: 0.5rem;
  width: 100%;
  max-width: 260px;
  text-align: center;
  margin-bottom: 2rem;
  padding: 2rem 0;
}

body.dark-theme .overview_cards li {
  background-color: var(--dark-desaturated-blue);
}

.overview_cards li .header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding: 0 2rem;
}

.overview_cards li .footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

@media (max-width: 375px) {
  .overview_cards li,
  .cards li {
    max-width: 100%;
  }

  section.overview .info .header {
    flex-direction: column;
    align-items: start;
  }

  section.overview .info .header h1 {
    font-size: 2rem;
  }

  .heading {
    margin-bottom: 2rem;
  }

  .toggle-mode {
    width: 100%;
    justify-content: space-between;
  }
}