/*! modern-normalize v3.0.1 | MIT License | https://github.com/sindresorhus/modern-normalize */

/*
Document
========
*/

/**
Use a better box model (opinionated).
*/

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

html {
	/* Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3) */
	font-family:
		system-ui,
		'Segoe UI',
		Roboto,
		Helvetica,
		Arial,
		sans-serif,
		'Apple Color Emoji',
		'Segoe UI Emoji';
	line-height: 1.15; /* 1. Correct the line height in all browsers. */
	-webkit-text-size-adjust: 100%; /* 2. Prevent adjustments of font size after orientation changes in iOS. */
	tab-size: 4; /* 3. Use a more readable tab size (opinionated). */
}

/*
Sections
========
*/

body {
	margin: 0; /* Remove the margin in all browsers. */
}

/*
Text-level semantics
====================
*/

/**
Add the correct font weight in Chrome and Safari.
*/

b,
strong {
	font-weight: bolder;
}

/**
1. Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3)
2. Correct the odd 'em' font sizing in all browsers.
*/

code,
kbd,
samp,
pre {
	font-family:
		ui-monospace,
		SFMono-Regular,
		Consolas,
		'Liberation Mono',
		Menlo,
		monospace; /* 1 */
	font-size: 1em; /* 2 */
}

/**
Add the correct font size in all browsers.
*/

small {
	font-size: 80%;
}

/**
Prevent 'sub' and 'sup' elements from affecting the line height in all browsers.
*/

sub,
sup {
	font-size: 75%;
	line-height: 0;
	position: relative;
	vertical-align: baseline;
}

sub {
	bottom: -0.25em;
}

sup {
	top: -0.5em;
}

/*
Tabular data
============
*/

/**
Correct table border color inheritance in Chrome and Safari. (https://issues.chromium.org/issues/40615503, https://bugs.webkit.org/show_bug.cgi?id=195016)
*/

table {
	border-color: currentcolor;
}

/*
Forms
=====
*/

/**
1. Change the font styles in all browsers.
2. Remove the margin in Firefox and Safari.
*/

button,
input,
optgroup,
select,
textarea {
	font-family: inherit; /* 1 */
	font-size: 100%; /* 1 */
	line-height: 1.15; /* 1 */
	margin: 0; /* 2 */
}

/**
Correct the inability to style clickable types in iOS and Safari.
*/

button,
[type='button'],
[type='reset'],
[type='submit'] {
	-webkit-appearance: button;
}

/**
Remove the padding so developers are not caught out when they zero out 'fieldset' elements in all browsers.
*/

legend {
	padding: 0;
}

/**
Add the correct vertical alignment in Chrome and Firefox.
*/

progress {
	vertical-align: baseline;
}

/**
Correct the cursor style of increment and decrement buttons in Safari.
*/

::-webkit-inner-spin-button,
::-webkit-outer-spin-button {
	height: auto;
}

/**
1. Correct the odd appearance in Chrome and Safari.
2. Correct the outline style in Safari.
*/

[type='search'] {
	-webkit-appearance: textfield; /* 1 */
	outline-offset: -2px; /* 2 */
}

/**
Remove the inner padding in Chrome and Safari on macOS.
*/

::-webkit-search-decoration {
	-webkit-appearance: none;
}

/**
1. Correct the inability to style clickable types in iOS and Safari.
2. Change font properties to 'inherit' in Safari.
*/

::-webkit-file-upload-button {
	-webkit-appearance: button; /* 1 */
	font: inherit; /* 2 */
}

/*
Interactive
===========
*/

/*
Add the correct display in Chrome and Safari.
*/

summary {
	display: list-item;
}
:root {
  --color-background: #1e1e1e;
  --color-text: #d4d4d4;
  --color-primary: #267f99;
  --color-primary-active: #098658;
  --color-secondary: #dcdcaa;

  color: var(--color-text);
  background: var(--color-background);
  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-block-size: 100dvh;
}

a {
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: inherit;

  &:is(:hover, :focus-visible) {
    color: var(--color-primary-active);
    text-decoration: underline;
  }
}

#app {
  margin: 0 auto;
  padding: 2rem;
  inline-size: min(80ch, 100%);
}

  .masthead.svelte-1n46o8q {
    display: flow-root;
  }

  .title.svelte-1n46o8q {
    margin-block-start: 0;
    font-size: 2.5rem;
  }

  main.svelte-1n46o8q {
    counter-reset: section;
  }

  .alert-message.svelte-1n46o8q {
    margin-block-end: 1rem;
    color: var(--color-secondary);
  }

  .chapter.svelte-1n46o8q {
    counter-increment: section;
  }

  .chapter-header.svelte-1n46o8q {
    position: sticky;
    inset-block-start: 1px; /* workaround for anchor links */
    container-type: scroll-state;
    container-name: chapter-header;
  }

  .chapter-title.svelte-1n46o8q {
    display: flex;
    margin-block: 0;
    padding-block: 0.5rem;
    padding-inline: 0.5rem;
    gap: 1rem;
    font-size: 1.25rem;
    background: var(--color-primary);

    /* :stuck */
    @container chapter-header scroll-state(stuck: top) {
      background: var(--color-primary-active);
    }

    &:after {
      content: counter(section, upper-roman);
      margin-inline-start: auto;
      color: var(--color-background);
    }
  }

  .chapter-content.svelte-1n46o8q {
    margin-block-start: 1rem;
    margin-block-end: 2rem;
  }

  .table-of-contents.svelte-1n46o8q {
    display: none;
    position: fixed;
    inset-block-start: 1rem;
    inset-inline-end: 1rem;
    inline-size: 225px;

    @media (width >= 1250px) {
      display: block;
    }
  }

  .navlist.svelte-1n46o8q {
    margin: 0;
    list-style-type: upper-roman;
    scroll-target-group: auto;

    :where(.svelte-1n46o8q)::marker {
      font-size: 0.75rem;
      padding-right: 1rem;
    }
  }

  .navlink.svelte-1n46o8q {
    color: var(--color-text);

    &:is(:where(.svelte-1n46o8q):hover, :where(.svelte-1n46o8q):focus-visible) {
      color: var(--color-primary);
    }

    &:target-current {
      color: var(--color-primary-active);
    }
  }