// VARIABLES AND IMPORTS
// ---------------------------------------------------------------------------

$clr-bg: oklch(22.49% 0.008 297.21);
$clr-fg: oklch(98.51% 0 0);
$clr-primary: oklch(82.67% 0.096 307.5);
$clr-secondary: oklch(from $clr-primary l c 240); // hue-shifted copy

$gap: 1rem;
$max-width: 50rem;
$mobile: 980px;

@import "syntax";

// MIXINS
// ---------------------------------------------------------------------------

@mixin phone-only {
  @media (max-width: $mobile) {
    @content;
  }
}

@mixin std-block {
  display: block;
  margin: 0;
}

// GLOBAL RESET & TYPOGRAPHY
// ---------------------------------------------------------------------------

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  padding: 0;
  margin: 0;
  transition: .1s ease-in-out;
  font-family: "Atkinson Hyperlegible Next", sans-serif;
  font-optical-sizing: auto;
  text-transform: lowercase;
}

html {
  font-size: 16px;
}

// 1rem base

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $gap;
  padding: 5rem $gap $gap;
  overflow-x: hidden;
  color: $clr-fg;
  background-color: black;
  background: url("/assets/images/noise.png"),
    radial-gradient(circle at center, $clr-bg, transparent),
    radial-gradient(circle at bottom left, #27577D, transparent),
    radial-gradient(circle at top right, #952EA4 0%, transparent),
    radial-gradient(circle at center right, #6949A5 0%, transparent),
    radial-gradient(circle at top center, #336BA0 0%, transparent);
  background-attachment: fixed;
}

// LAYOUT WRAPPER
// ---------------------------------------------------------------------------

body>* {
  // every top-level section
  display: flex;
  flex-direction: column;
  gap: $gap;
  width: 100%;
  max-width: $max-width;
  padding: 1.5rem 2.5rem;
  background: $clr-bg;
  outline: .2rem solid $clr-bg;
  outline-offset: .2rem;
}

@include phone-only {
  body {
    padding: 0;
    gap: .2rem;
  }

  body>* {
    outline: 0;
  }
}

// NAVIGATION
// ---------------------------------------------------------------------------

nav {
  position: fixed;
  transform: translateX(28rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $gap;
  padding: 1rem 2rem;
  width: 0rem;

  svg {
    width: 2rem;
    height: 2rem;
    fill: $clr-fg;
  }

  a {
    writing-mode: vertical-rl;
    text-orientation: sideways;
    text-decoration: none;
    color: $clr-fg;
  }

  hr {
    width: 100%;
  }
}

@include phone-only {
  nav {
    position: static;
    transform: none;
    flex-direction: row;
    justify-content: space-between;
    width: 100%;

    a {
      writing-mode: horizontal-tb;
    }

    hr {
      display: none;
    }
  }
}

// TYPOGRAPHIC ELEMENTS
// ---------------------------------------------------------------------------

p,
ul,
span {
  font-size: 1.2rem;
  text-align: justify;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  @include std-block;
  padding-top: .5rem;
  font-size: 1.75rem;
}

// auto-generate heading prefixes
@for $i from 1 through 6 {
  h#{$i}::before {
    $hashes: "";

    @for $_ from 1 through $i {
      $hashes: $hashes + "#"
    }

    content: "#{$hashes} ";
    color: oklch(82.67% .087 #{280 + ($i - 1) * 40});
  }
}

// LISTS
// ---------------------------------------------------------------------------

ul {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  list-style: none;

  li::before {
    content: "~";
    padding: 0 .25rem 0 .5rem;
    color: oklch(82.67% .087 180);
  }
}

// rainbow list items
@for $i from 1 through 15 {
  ul li:nth-child(n+#{$i})::before {
    color: oklch(82.67% .087 #{100 + ($i - 1) * 80});
  }
}

// LINKS & MISC
// ---------------------------------------------------------------------------

a {
  color: $clr-primary;

  &:hover {
    filter: brightness(.75);
  }
}

hr {
  $c: oklch(from $clr-fg .45 c h);
  background: $c;
  border-color: $c;
}

img {
  user-select: none;
}

address {
  opacity: .5;
  text-align: right;
  margin-top: -2.1lh;
  margin-bottom: .5rem;
}

footer {
  gap: 0;

  >* {
    text-align: center;
    font-size: 1rem;
    opacity: .5;
  }
}

// CODE BLOCKS
// ---------------------------------------------------------------------------

div.sourceCode {
  padding: .2rem;
  overflow: hidden;
  font-family: "Atkinson Hyperlegible Mono", monospace;
  background-color: black;
  background: url("/images/noise.png"),
    radial-gradient(circle at center, $clr-bg, transparent),
    radial-gradient(circle at bottom left, #27577D, transparent),
    radial-gradient(circle at top right, #952EA4 0%, transparent),
    radial-gradient(circle at center right, #6949A5 0%, transparent),
    radial-gradient(circle at top center, #336BA0 0%, transparent);
  background-attachment: scroll;

  outline: 0.2rem solid $clr-bg;
  outline-offset: 0.2rem;

  >* {
    background: $clr-bg;
    background-attachment: fixed;
    padding: 1.2rem;
    overflow: auto;
  }

  * {
    font-family: "Atkinson Hyperlegible Mono", monospace;
    text-transform: none;
    font-size: 1.05rem;
  }
}