:root {
  --white: #f2f2f2;
  --background-light: #f2f2f2;
  --background-dark: #210b4b;
  --background-dark-alt: #3f1c6d;
  --font-light: #f2f2f2;
  --font-dark: #333;
  color-scheme: dark;
  line-height: 1.5;

  :has(input:checked) {
    color-scheme: light;
    color: var(--font-dark);
  }
}

body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
hr {
  margin: 2rem auto;
  width: 3rem;
}
h1, h3 {
  margin: 0;
  margin: 0 0 .5rem 0;;
}
h1 {
  font-size: 4rem;
}
p {

  &:last-child {
    margin-bottom: 0;
  }
}
section {
  padding: 1.5rem 1rem;

  & .section__content {
    max-width: 100%;
  }
}
section:nth-child(even) {
  background-color: light-dark(var(--background-light), var(--background-dark-alt));
}
section:nth-child(odd) {
  background-color: light-dark(var(--background-light), var(--background-dark));
}

.container {
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
}
.sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;

  img {
    border-radius: 100%;
    aspect-ratio: 1 / 1;
    max-width: 500px;
    margin-bottom: 1rem;
    object-fit: cover;
    object-position: 0 -2rem;
  }
  h1 {
    text-align: center;
  }
}
.education__content-item {
  margin-bottom: 1rem;
}
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.card {
  border: 3px solid light-dark(var(--background-dark-alt), var(--background-light));
  border-radius: 1rem;
  padding: 1.5rem;

  .card__title {
    margin-bottom: 0;
    line-height: 1;
  }
}

/* Theme Switcher */
.toggle-switch {
  position: relative;
  width: 50px;   /* half width */
  height: 25px;  /* half height */
}

label {
  position: absolute;
  width: 100%;
  height: 25px; /* half height */
  background-color: var(--background-light);
  border-radius: 12.5px; /* half of height */
  cursor: pointer;
}

input {
  position: absolute;
  display: none;
}

.slider {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 12.5px;
  transition: 0.3s;
}

input:checked ~ .slider {
  background-color: var(--background-dark);
}

.slider::before {
  content: "";
  position: absolute;
  top: 3px;   /* adjust to center knob */
  left: 4px;  /* adjust to center knob */
  width: 18px; /* half knob size */
  height: 18px;
  border-radius: 50%;
  box-shadow: inset 6px -1px 0px 0px var(--background-dark);
  background-color: var(--background-light);
  transition: 0.3s;
}

input:checked ~ .slider::before {
  transform: translateX(25px); /* half movement */
  background-color: var(--background-light);
  box-shadow: none;
}

@media screen and (min-width: 600px) {
  section {
    padding: 1.5rem 3rem;

    & .section__content {
      max-width: 500px;
      margin: 0 auto;
    }
  }
  /* [class*="__content"] {
    max-width: 500px;
    margin: 0 auto;
  } */
}