/* ==========================================================================
   Reset
   ========================================================================== */

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

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
}

/* ==========================================================================
   Headings & inline elements
   ========================================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-block: var(--space-l) var(--space-s);
  font-family: var(--font-heading);
  line-height: 1.2;

  /* Higher specificity than the vertical-rhythm rule below (two type
     selectors vs. one) so it wins regardless of source order. */
  & + :is(p, ul, ol, blockquote, figure, .callout, .code-block) {
    margin-block-start: 0;
  }
}

h1 {
  font-size: var(--step-4);
}

h2 {
  font-size: var(--step-3);
}

h3 {
  font-size: var(--step-2);
}

h4 {
  font-size: var(--step-1);
}

h5 {
  font-size: var(--step-0);
}

h6 {
  font-size: var(--step-n1);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

  &:visited {
    color: var(--color-accent-secondary);
  }
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Native content elements
   Typography for elements Markdown/HTML produce natively: paragraphs,
   lists, blockquote/cite, figure/figcaption, hr.
   ========================================================================== */

p,
ul,
ol,
blockquote,
figure {
  margin-block: var(--space-m) 0;
}

blockquote {
  margin-inline: 0;
  padding-inline-start: var(--space-m);
  border-inline-start: 0.25rem solid var(--color-accent);
  font-family: var(--font-heading);
  font-size: var(--step-1);
  font-style: italic;
  color: var(--color-muted);

  & p {
    margin-block-start: 0;
  }

  & cite {
    display: block;
    margin-block-start: var(--space-xs);
    font-family: var(--font-body);
    font-size: var(--step-n1);
    font-style: normal;
    color: var(--color-text);

    &::before {
      content: "— ";
    }
  }
}

figure {
  margin-inline: 0;

  & img,
  & svg {
    width: 100%;
    border: 1px solid var(--color-border);
  }
}

figcaption {
  margin-block-start: var(--space-xs);
  font-size: var(--step-n1);
  color: var(--color-muted);
  text-align: center;
}

.full-bleed figcaption {
  padding-inline: var(--space-l);
}

hr {
  margin-block: var(--space-l);
  border: none;
  border-top: 1px solid var(--color-border);
}

ul,
ol {
  padding-inline-start: var(--space-m);

  & li + li {
    margin-block-start: var(--space-2xs);
  }
}

/* ==========================================================================
   Component: Callout
   Hand-rolled — not a native HTML element. BEM: block, then element,
   then modifiers grouped at the end.
   ========================================================================== */

.callout {
  --callout-color: var(--color-accent);

  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: var(--space-xs);
  align-items: center;
  margin-block: var(--space-m) 0;
  padding: var(--space-s) var(--space-m);
  border-inline-start: 0.25rem solid var(--callout-color);
  border-radius: 0 var(--space-2xs) var(--space-2xs) 0;
  background-color: color-mix(in srgb, var(--callout-color) 10%, var(--color-bg));

  & wa-icon {
    font-size: var(--step-1);
    color: var(--callout-color);
  }
}

.callout__title {
  margin-block: 0;
  font-family: var(--font-heading);
  font-size: var(--step-0);
  font-weight: 700;
  color: var(--callout-color);
}

.callout__body {
  grid-column: 1 / -1;
  min-width: 0;

  & > :first-child {
    margin-block-start: var(--space-2xs);
  }

  & > :last-child {
    margin-block-end: 0;
  }
}

.callout--note {
  --callout-color: var(--color-accent);
}

.callout--tip {
  --callout-color: var(--syntax-string);
}

.callout--warning {
  --callout-color: var(--color-accent-secondary);
}

/* ==========================================================================
   Component: Home hero & post index
   Home page intro block and the post listing below it.
   ========================================================================== */

.home-eyebrow {
  font-size: var(--step-n1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.home-hero-title {
  margin-block-start: var(--space-2xs);
  font-size: var(--step-5);
  font-weight: 400;
}

.home-intro {
  max-width: 38rem;
  color: var(--color-muted);
}

.home-divider {
  width: 3rem;
  height: 0.1875rem;
  margin-inline: 0;
  border: none;
  background-color: var(--color-accent);
}

.post-index {
  padding-inline-start: 0;
  list-style: none;
  border-block-start: 1px solid var(--color-border);

  & > li + li {
    margin-block-start: 0;
  }
}

.post-index__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2xs) var(--space-m);
  padding-block: var(--space-m);
}

.post-index__item + .post-index__item {
  border-block-start: 1px solid var(--color-border);
}

.post-index__date {
  flex: 0 0 8rem;
  font-size: var(--step-n1);
  color: var(--color-muted);
}

.post-index__body {
  flex: 999 1 16rem;
  min-width: 0;
}

.post-index__title {
  margin-block-start: 0;
}

.post-index__title a {
  text-decoration: none;
}

.post-index__title a:hover {
  color: var(--color-accent-secondary);
}

.post-index__excerpt {
  color: var(--color-muted);
}

/* ==========================================================================
   Code & syntax highlighting
   ========================================================================== */

.code-block {
  position: relative;
  margin-block: var(--space-m) 0;
}

pre {
  margin-block: 0;
  padding: var(--space-s);
  overflow-x: auto;
  background-color: var(--color-code-bg);

  & code {
    padding: 0;
    background: none;
  }
}

.code-block wa-copy-button {
  position: absolute;
  inset-block-start: var(--space-2xs);
  inset-inline-end: var(--space-2xs);
  color: var(--color-text);
  background-color: var(--color-code-bg);
  border-radius: var(--space-3xs);
}

code {
  padding-inline: var(--space-3xs);
  background-color: var(--color-code-bg);
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: var(--syntax-comment);
  font-style: italic;
}

.token.punctuation {
  color: var(--color-text);
}

.token.tag,
.token.constant,
.token.symbol,
.token.deleted {
  color: var(--syntax-tag);
}

.token.boolean,
.token.number {
  color: var(--syntax-number);
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: var(--syntax-string);
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: var(--syntax-keyword);
}

.token.function,
.token.class-name {
  color: var(--syntax-function);
}

.token.regex,
.token.important {
  color: var(--syntax-regex);
}

.token.property {
  color: var(--syntax-css-property);
}

/* ==========================================================================
   Component: Reads
   Card grid on /reads and the annotation list on each detail page.
   ========================================================================== */

.reads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--space-m);
  padding-inline-start: 0;
  list-style: none;
}

.reads-card {
  position: relative;
  height: 100%;

  & img[slot="media"] {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }
}

.reads-card__title-link {
  text-decoration: none;

  &::after {
    content: "";
    position: absolute;
    inset: 0;
  }

  &:hover {
    color: var(--color-accent-secondary);
  }
}

.reads-card__authors {
  margin-block: var(--space-2xs) 0;
  color: var(--color-muted);
}

.reads-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3xs);
  margin-block-start: var(--space-xs);
}

.reads-detail__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2xs) var(--space-xs);
  color: var(--color-muted);
}

.reads-detail__annotations {
  padding-inline-start: 0;
  list-style: none;
  border-block-start: 1px solid var(--color-border);
}

.reads-detail__annotation {
  padding-block: var(--space-m);
}

.reads-detail__annotation + .reads-detail__annotation {
  border-block-start: 1px solid var(--color-border);
}

.reads-detail__quote {
  margin-block-start: 0;
}

.reads-detail__note {
  color: var(--color-muted);
  font-size: var(--step-n1);
}

.reads-detail__source-link {
  font-size: var(--step-n1);
}