:root {
  color-scheme: light dark;
  --animate-duration: 1s;
  --animate-delay: 1s;
  --animate-repeat: 1;
  --font-intertight: "Inter Tight", sans-serif;
  --font-quicksand: "Quicksand", sans-serif;
  --font-roundo: "Roundo", sans-serif;
  --color-light-shade: #edf2f4;
}

/* layout purpose */
@layer modifier {
  * {
    --flow-space: var(--space-xl);
  }
}

@font-face {
  font-family: "Inter Tight";
  src: url("/css/InterTight-VariableFont_wght.ttf") format("truetype");
  font-display: swap;
  font-style: italic;
  font-weight: var(--font-regular);
}

@font-face {
  font-family: "Inter Tight";
  src: url("/css/InterTight-Italic-VariableFont_wght") format("truetype");
  font-display: swap;
  font-style: italic;
  font-weight: var(--font-regular);
}

@font-face {
  font-family: "Quicksand";
  src: url("/css/Quicksand-VariableFont_wght.ttf") format("truetype");
  font-display: swap;
  font-style: normal;
}

@font-face {
  font-family: "Roundo";
  src: url("/css/Roundo-Variable.ttf") format("truetype");
  font-display: swap;
  font-style: normal;
}

body {
  max-width: 110rem;
  margin-inline: auto;
  padding-block-start: 0;
  background-color: light-dark(var(--color-light-shade), var(--color-dark));
  color: light-dark(var(--color-dark), var(--color-light));
  font-family: var(--font-base);
}

h1 {
  max-width: none;
}

h2 {
  width: fit-content;
  padding: 3px var(--space-m) 0 var(--space-xs);
  position: relative;
  align-self: flex-start;

  &::after {
    z-index: -1;
    content: "";
    position: absolute;
    background-color: light-dark(
      #81c3d7,
      #004b62
    );
    width: 100%;
    height: 0.5lh;
    bottom: 0;
    left:0;
  }
}

h3 {
  margin-block-end: var(--space-m);
}

figure {
  margin: 0;
}

.pro {
  color: #606c38;
}

.contra {
  color: #c1121f;
}

.block {
  padding-left: var(--space-xl);
  position: relative;
  .grid {
    margin-block: var(--space-l) var(--space-xl);
    gap: var(--space-m);
    img, video {
      aspect-ratio: 1/1;
      object-fit: cover;
      height: 100%;
      width: 100%;
    }
  }
}

.typo-grid {
  @media (width > 48rem) {
    grid-template-columns: 1fr 2fr;
  }

  h3 {
    font-size: var(--size-step-1);
  }

  ul {
    margin-block: var(--space-s) var(--space-l);
  }
}

.typo-img {
  height: auto !important;
}

.star-alignment {
  position: relative;
}

.ico,
.star {
  position: absolute;
  top: 0lh;
  left: -2lh;
  stroke: light-dark(var(--color-dark), var(--color-light-shade)) !important;
  path {
    stroke: light-dark(var(--color-dark), var(--color-light-shade)) !important;
  }

  @media (width > 48rem) {
    top: 0.15lh;
  }

  @media (width > 64rem) {
    top: 0.3lh;
  }

  + .star {
    top: 0.9lh;
    left: -1lh;
  }
  + .star + .star {
    top: -0.1lh;
    left: -1lh;
  }
}

.star {
  stroke: light-dark(var(--color-dark), var(--color-light-shade)) !important;
  path {
    stroke: light-dark(var(--color-dark), var(--color-light-shade)) !important;
  }
}

.star-invert {
  path {
    fill: light-dark(var(--color-light-shade), var(--color-dark)) !important;
    stroke: light-dark(var(--color-light-shade), var(--color-dark)) !important;
  }
}


code {
  max-width: 80ch;
  display: block;
  font-weight: var(--font-regular);
  background-color: light-dark(
    var(--color-light-glare),
    var(--color-dark-glare)
  );

  & + code {
    
    margin-block-start: 1rem;
  }
}

/* header */
.header {
  padding-block: var(--space-2xl) 0;
  hr {
    margin-block: var(--space-l);
  }
}

.header__top {
  align-items: center;
  display: grid;
  gap: var(--space-xs);
}

.header__ytgrid,
.header__topgrid {
  display: grid;
  align-content: flex-start;
  align-self: flex-start;
  gap: var(--space-l);
  @media (width > 48rem) {
    grid-template-columns: 1fr 2fr;
  }
  @media (width > 64rem) {
    grid-template-columns: 1fr 1fr;
  }
  
  p, figure, h2 {
    margin: 0;
  }
}

.header__topgrid--yt {
  @media (width > 64rem) {
    grid-template-columns: 1fr 0.5fr;
  }

  h3, h4 {
    margin-block-end: 0;
  }
}

.header__topgrid-content {
  display: grid;
  align-content: flex-start;
  gap: var(--space-s);
}

.header__middle {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs);
}

.logo {
  margin-top: 0;
  max-width: 20ch;
  text-decoration: none;
  color: inherit;
  font-family: var(--font-satoshi);
  font-weight: var(--font-black);
  font-size: var(--size-step-6);
  line-height: var(--leading-fine);
  flex-shrink: 0;

  sup {
    letter-spacing: 0.01ch;
    background-color: var(--color-dark-glare);
    overflow: hidden;
    text-shadow: 32px 32px 0px #3f3f3f, 31px 31px 0px #3f3f3f,
      30px 30px 0px #3f3f3f, 29px 29px 0px #3f3f3f, 28px 28px 0px #3f3f3f,
      27px 27px 0px #3f3f3f, 26px 26px 0px #3f3f3f, 25px 25px 0px #3f3f3f,
      24px 24px 0px #3f3f3f, 23px 23px 0px #3f3f3f, 22px 22px 0px #3f3f3f,
      21px 21px 0px #3f3f3f, 20px 20px 0px #3f3f3f, 19px 19px 0px #3f3f3f,
      18px 18px 0px #3f3f3f, 17px 17px 0px #3f3f3f, 16px 16px 0px #3f3f3f,
      15px 15px 0px #3f3f3f, 14px 14px 0px #3f3f3f, 13px 13px 0px #3f3f3f,
      12px 12px 0px #3f3f3f, 11px 11px 0px #3f3f3f, 10px 10px 0px #3f3f3f,
      9px 9px 0px #3f3f3f, 8px 8px 0px #3f3f3f, 7px 7px 0px #3f3f3f,
      6px 6px 0px #3f3f3f, 5px 5px 0px #3f3f3f, 4px 4px 0px #3f3f3f,
      3px 3px 0px #3f3f3f, 2px 2px 0px #3f3f3f, 1px 1px 0px #3f3f3f;
    color: var(--color-light-glare);
    border-radius: var(--radius-s);
    padding: 5px var(--space-xs) var(--space-xs);
    transform: translateY(0ch);
    font-size: var(--size-step-0);
    font-weight: 100;
    line-height: 1;
  }
}

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

nav a {
  color: inherit;
}

hr {
  border: none;
  border-block-start: var(--stroke-weight-light, 1px) solid;
  height: var(--stroke-weight-light, 1px);
  color: inherit;
  margin-block-end: 0;
  padding: 0;
}

/* bulb */
#theme-toggle {
  margin-top: 5px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

#theme-icon {
  transition: transform 0.3s ease-in-out;
}

#half-moon,
#theme-rays {
  transition: opacity 0.3s ease-in-out;
}

.moon-mask {
  transition: transform 0.3s ease-in-out;
}

#half-moon {
  opacity: 0;
}

/* cards */

.cards {
  --curve: 10;
  --gutter: var(--space-m);
  @media (width > 48rem) {
    --grid-min-item-size: 20rem;
  }

  display: grid;
  gap: var(--space-l);
  margin: 4rem 0;
  padding-inline-start: 0;
  li {
    list-style: none;
  }
}

.card {
  box-shadow: var(--box-shadow-m);
  @media (prefers-color-scheme: dark) {
    --box-shadow-m: rgba(255, 255, 255, 0.1) 0px 1px 3px 0px,
      rgba(255, 255, 255, 0.05) 0px 2px 6px 2px;
  }
  border: 1px solid #22211f;
  color: light-dark(var(--color-dark), var(--color-light));
  position: relative;
  display: block;
  height: 100%;
  overflow: hidden;
  text-decoration: none;
  border-radius: var(--radius-m);
}

.card__image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 0 0 var(--radius-l) var(--radius-l);
  border-bottom: 1px solid
    light-dark(var(--color-light-shade), var(--color-dark));
    transition: 0.2s ease-in-out;
}

.card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  border-radius: var(--radius-m);
  background-color: light-dark(var(--color-light-shade), var(--color-dark));
  transform: translateY(100%);
  transition: 0.2s ease-in-out;
}

.card__header {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-m);
  padding: var(--space-m);
  border-radius: var(--radius-m) 0 0 0;
  background-color: light-dark(var(--color-light-shade), var(--color-dark));
  transform: translateY(-100%);
  transition: 0.2s ease-in-out;
}

.card__arc {
  width: 80px;
  height: 80px;
  position: absolute;
  bottom: calc(100% - 1px);
  right: 0;
  z-index: 1;
}

.card__arc path {
  fill: light-dark(var(--color-light-shade), var(--color-dark));
  d: path("M 40 80 c 22 0 40 -22 40 -40 v 40 Z");
}

.card:hover .card__header {
  transform: translateY(0);
}

.card__thumb {
  flex-shrink: 0;
  width: 50px;
  aspect-ratio: 1;
  height: 50px;
  border-radius: 100vmax;
  transition: 0.2s ease-in-out;
}

.card__title {
  font-size: var(--size-step-2);
  margin-block: 0;
}

.card__tagline {
  display: block;
  margin-block-start: 1em;
  font-size: var(--size-step-0);
}

.card__status {
  font-size: var(--size-step-0);
}

.card__description {
  font-size: var(--size-step-0);
  padding-inline: var(--space-m);
  padding-block-end: var(--space-m);
  margin: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.card:hover {
    .card__overlay {
        transform: translateY(0);
    }
    .card__thumb,
    .card__image {
        filter: grayscale(100%);
    }
}

.font-list {
  font-size: var(--size-step-0);
  gap: 0 var(--space-m);
  padding: 0;
  margin-block: var(--space-l);
  list-style: none;
  li {
    grid-row: auto / span 3;
    grid-gap: 0;
    display: grid;
    grid-template-rows: subgrid;
    padding-block: var(--space-m);
    border-top: 2px solid light-dark(var(--color-dark), var(--color-light-shade));
  }
  h3 {
    margin-block: 0;
    font-size: var(--size-step-2);
  }
  .font-list__var {
    font-size: var(--size-step-000);
  }
}


.grid-end,
.grid-full {
  @media (width > 90rem) {
    display: grid;
    column-gap: var(--space-m);
    grid-template-columns: 1fr 1fr;
  }
  .typo-grid {
    @media (width > 90rem) {
      grid-template-columns: 1fr 1fr;
    }
  }
}

.grid-full {
  @media (width > 90rem) {
    grid-template-columns: 1fr;
  }
}

.intro-grid {
  display: grid;

  @media (width > 64rem) {
    gap: var(--space-l);
    grid-template-columns: 1fr 1fr;
  }
  
  figure, h2 {
    margin: 0;
  }
}

.goodbye {
  aspect-ratio: 1/1;
  margin-block-start: 2rem;
}


.course-list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}