@font-face {
  font-family: "cairo";
  src: url("./fonts//Cairo.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
  ascent-override: 120%;
  descent-override: 50%;
}

:root {
  scroll-behavior: smooth;
  font-family: "cairo", monospace;
  color-scheme: light dark;
  color: light-dark(#000000, #ffffff);
  background-color: light-dark(#ffffff, #000000);

  --main-col: dodgerblue;
  --card-brdr-col: color-mix(
    in srgb,
    var(--main-col),
    light-dark(var(--main-col), #fff)
  );
  --card-counter-bg-col: color-mix(
    in srgb,
    var(--main-col) 50%,
    light-dark(#eee, #555)
  );
  --card-counter-brdr-col: light-dark(#ffffff, #000000);
  --card-bg-col: #1e90ff75;

  /* logic */
  &:has(#dark:checked) {
    color-scheme: dark;
  }
  &:has(#system:checked) {
    color-scheme: light dark;
  }
  &:has(#light:checked) {
    color-scheme: light;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
  font-weight: bold;
  text-align: center;
  margin: 0;
  padding: 0;
  border: none;
  outline: none;
  user-select: none;
  scrollbar-width: none; /* remove the scrollbar from all */
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -moz-tap-highlight-color: rgba(0, 0, 0, 0);
}

.progress {
  background-color: var(--main-col);
  position: fixed;
  inset: 0;
  width: 100%;
  height: 5px;
  z-index: 100;
  scale: 0 1;
  --scale-up: 1 1;
  transform-origin: left;
  animation: scale-up linear 1ms;
  animation-timeline: scroll();
}

.page-title {
  font-weight: bold;
  font-size: 4rem;
  font-weight: bolder;
  letter-spacing: 2px;
  text-align: center;
  width: fit-content;
  margin: auto;
  color: light-dark(#bbbbbb, #444444);
  transition: color 300ms;
  letter-spacing: 10px;

  &:hover {
    color: var(--main-col);
    cursor: pointer;
  }
}

/* radio */
input[type="radio"] {
  appearance: none;
  cursor: pointer;
  width: 35px;
  aspect-ratio: 1;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  filter: grayscale(1);
  transition: filter 500ms;
  position: relative;

  &::before {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 5px;
    border-radius: 100px;
    background-color: var(--main-col);
    transition-property: opacity, visibility;
    transition-duration: 500ms;
    opacity: 0;
    visibility: hidden;
  }

  &:checked {
    filter: none;
  }

  &:focus-visible::before {
    opacity: 1;
    visibility: visible;
  }
}

.modes {
  margin-block: 10px 100px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 25px;
  position: relative;

  &::before {
    position: absolute;
    width: 150px;
    height: 40px;
    bottom: -50px;
    font-size: 1.5rem;
    font-weight: bold;
  }

  &:has(#dark:checked)::before {
    content: "DARK";
  }
  &:has(#system:checked)::before {
    content: "SYSTEM";
  }
  &:has(#light:checked)::before {
    content: "LIGHT";
  }

  & > input[type="radio"] {
    &#dark {
      background-image: url(./imgs/moon.svg);
    }
    &#system {
      background-image: url(./imgs/desktop.svg);
    }
    &#light {
      background-image: url(./imgs/sun.svg);
    }
  }
}

.cards {
  margin-top: 50px;
  width: 100%;
  display: grid;
  grid: none / repeat(auto-fill, minmax(min(100%, 200px), 1fr));
  gap: 30px;
  padding-inline: 30px;

  & > .card {
    padding: 20px;
    border-radius: 15px;
    counter-increment: card;
    position: relative;
    background-color: var(--card-bg-col);
    border: 5px solid var(--card-brdr-col);

    &::before {
      content: "#" counter(card);
      position: absolute;
      top: -20px;
      right: -20px;
      font-size: 1.2rem;
      background-color: var(--card-counter-bg-col);
      border: 7px solid var(--card-counter-brdr-col);
      width: 55px;
      aspect-ratio: 1;
      align-content: center;
      justify-items: center;
      border-radius: 100px;
    }

    & > h3 {
      font-size: 1.5rem;
      text-align: left;
      color: var(--main-col);
    }
    & > p {
      text-align: left;
    }
  }
}

/* animations keyframes */
@keyframes scale-up {
  to {
    scale: var(--scale-up);
  }
}

@keyframes wink {
  50% {
    opacity: 0;
  }
}

@media (prefers-color-scheme: dark) {
  .modes:has(#system:checked) > #dark {
    animation: wink 1.5s linear infinite;
  }
}
@media (prefers-color-scheme: light) {
  .modes:has(#system:checked) > #light {
    animation: wink 1.5s linear infinite;
  }
}