:root {
  /* Colors */
  --text-color: #fdf7ed;
  --title-color: #f1f1f1;
  --background-color: #141412;
  --surface-color: color-mix(in srgb, var(--background-color) 98%, white);
  --border-color: color-mix(in srgb, var(--background-color) 96%, white);
  --accent-color: wheat;

  /* Typography */
  --font-family: "Noto Sans", sans-serif;
  --font-family-title: "Source Serif 4", serif;
  --text-font-size: 1em;
  --font-size-xsm: 0.5em;
  --font-size-sm: 1.25em;
  --font-size-md: 1.5em;
  --font-size-lg: 1.75em;
  --font-size-xl: clamp(2rem, 6vw, 3em);
  --font-size-xxl: clamp(2.5rem, 9vw, 4em);
  --font-weight-light: 300;
  --font-weight-regular: 500;
  --font-weight-bold: 700;
  --font-weight-title: 800;

  /* Spacing */
  --space-xs: .5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;

  /* Layout */
  --body-max-width: 935px;
  --body-side-padding: 25px;

  /* Borders & effects */
  --border: 1px solid var(--border-color);
  --hover-opacity: .5;

  /* Navigation */
  --nav-height: 60px;
  --nav-background: rgba(22, 22, 22, 0.8);
  --nav-blur: 10px;
}

html {
  background-color: var(--background-color);
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

main {
  position: relative;
  box-sizing: border-box;

  flex: 1;
  /* `margin: 0 auto` below sets auto cross-axis margins, which override
     flex stretch and would otherwise size main via shrink-to-fit — i.e.
     an unwrappable child (a long code line) could force this whole column
     wider than the viewport regardless of its own overflow handling.
     An explicit width keeps main's box tied to the viewport; margin:auto
     still centers it once max-width caps it below 100%. */
  width: 100%;
  min-width: 0;
  max-width: var(--body-max-width);

  margin: 0 auto;
  padding: var(--space-sm) var(--body-side-padding);

  display: flex;
  flex-flow: column;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;

  width: 100%;
  box-sizing: border-box;

  background-color: var(--nav-background);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: var(--border);
}

.site-nav__inner {
  box-sizing: border-box;
  max-width: var(--body-max-width);
  height: var(--nav-height);
  margin: 0 auto;
  padding: 0 var(--body-side-padding);

  display: flex;
  flex-flow: row;
  align-items: center;
  justify-content: space-between;
}

.site-nav__brand {
  font-family: var(--font-family-title);
  font-variant-caps: small-caps;
  font-weight: var(--font-weight-title);
  font-size: var(--font-size-sm);
  color: var(--title-color);
  user-select: none;
}

.site-nav--hero .site-nav__brand {
  display: none;
}

.site-nav__links {
  display: flex;
  flex-flow: row;
  align-items: center;
  margin-inline-start: auto;
  gap: var(--space-md);

  svg {
    width: 20px;
    height: 20px;
    display: block;
  }
}

main#hero {
  justify-content: center;

  h1 {
    font-size: var(--font-size-xxl);
    font-variant-caps: normal;
    user-select: none;
  }

  span {
    margin: 0;
    text-align: center;
    font-weight: var(--font-weight-regular);
  }

  nav {
    display: flex;
    flex-direction: row;
    gap: var(--space-sm);

    @media (max-width: 600px) {
      flex-direction: column;
    }

    ul {
      width: 100%;
      display: flex;
      flex-direction: column;
      border: var(--border);
      background-color: var(--surface-color);
      margin: 0;
      padding: var(--space-sm);
      gap: var(--space-xs);
      list-style: none;

      li {
        position: relative;
      }

      a {
        width: 100%;
        display: flex;
        justify-content: space-between;
        gap: var(--space-sm);

        span {
          width: fit-content;
          white-space: nowrap;
          text-align: end;
          text-decoration: none;
        }
      }

      a:before {
        content: "";
        position: absolute;
        inset-inline-start: -1.2em;
        top: .7em;
        width: .4em;
        height: .4em;
        rotate: 45deg;
        background: var(--accent-color);
      }

      p {
        font-size: var(--font-size-md);
        font-weight: var(--font-weight-bold);
        margin: 0;
      }
    }
  }
}

footer {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--body-side-padding);
}

header {
  display: flex;
  flex-flow: column;
  gap: var(--space-sm);
  margin: 0 0 var(--space-lg) 0;
  max-width: 70ch;
  width: 100%;
  align-self: center;

  #information {
    display: flex;
    flex-flow: row wrap;
    justify-content: center;
    gap: var(--space-sm);
    row-gap: var(--space-xs);
    color: var(--title-color)
  }
}

#content {
  /* Cap the reading measure so prose lines stay comfortable even though
     `main` itself is wider (935px). */
  max-width: 70ch;
  width: 100%;
  align-self: center;
}

blockquote {
  border-radius: 2px;
  margin: 0;
  padding: var(--space-sm);
  background-color: var(--surface-color);
  border: var(--border);

  >p {
    margin: 0;
  }
}

pre {
  overflow-x: auto;
  max-width: 100%;
}

table {
  width: 100%;
  background-color: var(--surface-color);
  border: var(--border);

  th {
    border: var(--border);
  }

  tbody {
    width: 100%;

    tr:hover {
      opacity: 0.7;
      border-bottom: var(--border);
    }
  }
}

.katex {
  font-size: var(--text-font-size) !important;
}

.katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding-block: var(--space-xs);
}