@use "reset";
@use "typography";
@use "colors";
@use "syntax";

// Global Styles
body {
  width: 100%;
  height: 100%;
  margin: 0 auto;
  scroll-behavior: smooth;
  background-color: var(--background-outer);
  font-family: typography.$font-stack-sans;
  font-kerning: normal;
  font-variant-ligatures: normal;
  font-feature-settings: "kern", "liga", "calt", "clig", "ss01";

  // global base font size:
  font-size: 0.975em;
  line-height: 1.5;
}

code,
kbd,
samp,
pre,
.monospace {
  font-family: typography.$font-stack-mono;
  letter-spacing: normal;
}

// override above font-family if browser supports variable fonts
// https://caniuse.com/#feat=variable-fonts
@supports (font-variation-settings: normal) {
  body {
    font-family: typography.$font-stack-sans-variable;
    font-optical-sizing: auto;
  }

  code,
  kbd,
  samp,
  pre,
  .monospace {
    font-family: typography.$font-stack-mono-variable;
  }

  // Chrome doesn't automatically slant multi-axis Inter var, for some reason.
  // Adding "slnt" -10 fixes Chrome but then over-italicizes in Firefox. AHHHHHHHHHH.
  em {
    font-style: normal !important;
    font-variation-settings: "ital" 1, "slnt" -10;

    // Roboto Mono doesn't have this problem, but the above fix breaks it, of course.
    code,
    kbd,
    samp,
    pre,
    .monospace {
      font-style: italic !important;
    }
  }
}

a {
  color: var(--link); // also set in JSX (pages/_app.tsx)
  text-decoration: none;
  background-position: 0% 100%;
  background-repeat: no-repeat;
  background-size: 0% 2px;
  padding-bottom: 2px;
  transition: background-size 0.25s ease-in-out;
  background-image: linear-gradient(var(--link-underline), var(--link-underline));

  &:hover {
    background-size: 100% 2px;
  }
}

// set an anchor's class to `no-underline` to disable all of this
.no-underline {
  background: none !important;
  padding-bottom: 0;
}

// make SVG icons relative to surrounding text
// https://github.com/twitter/twemoji#inline-styles
.icon {
  display: inline-block;
  height: 1.2em;
  width: 1.2em;
  margin: 0 0.05em;
  vertical-align: -0.22em;
  border: 0;
  cursor: inherit;
}

// all code
code {
  font-size: 0.925em;
  letter-spacing: normal;
  page-break-inside: avoid;
}

// inline code in paragraphs/elsewhere (single backticks)
:not(pre) > code {
  padding: 0.075em 0.25em;
  border: 1px solid var(--kinda-light);
}

.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

// AnchorJS styles
.h-anchor {
  margin: 0 0.25em;
  padding: 0 0.25em;
  color: var(--medium-light) !important;
  background: none !important;
  font-weight: 300;
  line-height: 1;
  opacity: 0; // overridden by JS on mobile devices
  user-select: none;

  &::before {
    content: "\0023"; // pound sign
  }

  &:hover {
    color: var(--link) !important;
  }
}

h2,
h3,
h4 {
  &:hover {
    .h-anchor {
      opacity: 1;
    }
  }
}

// https://web.dev/prefers-reduced-motion/#(bonus)-forcing-reduced-motion-on-all-websites
@media (prefers-reduced-motion: reduce) {
  *,
  ::before,
  ::after {
    animation-delay: -1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }
}