/* Plain elements, before any class touches them. */

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

/* The hidden attribute must win over any display a component sets. */
[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font: var(--text-base) / var(--leading) var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  /* A faint northern light over a night sky. */
  background-image:
    radial-gradient(1100px 480px at 50% -12%, var(--glow-green), transparent 62%),
    radial-gradient(800px 380px at 88% -4%, var(--glow-violet), transparent 60%),
    linear-gradient(180deg, var(--color-bg-top), var(--color-bg));
  background-attachment: fixed;
}

h1,
h2,
h3 {
  margin: 0 0 var(--space-2);
  line-height: var(--leading-tight);
  font-weight: var(--weight-bold);
}

h1 {
  font-size: var(--text-2xl);
}

h2 {
  font-size: var(--text-lg);
}

h3 {
  font-size: var(--text-base);
}

p {
  margin: 0 0 var(--space-3);
}

a {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-accent-hover);
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  font: var(--text-md) / 1.4 var(--font-mono);
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

/* One focus ring for everything that takes focus from the keyboard. */
:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

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