/* Quavern — Blog. Quavern's words, dated and signed, read in one column.
   A drawn rail runs down the stream with one square contact per entry; the
   newest entry's contact is amber because it is the current word. tokens.css
   supplies every colour, face and step, in the light and the after-hours
   field alike. */

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

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

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--line-body);
  font-kerning: normal;
}

a {
  color: inherit;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 0.18em;
}

:focus-visible {
  outline: var(--border-heavy) solid var(--color-focus);
  outline-offset: 3px;
}

p,
h1,
h2,
h3,
h4,
ul,
ol,
blockquote {
  margin: 0;
}

.skip-link {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: var(--z-modal);
  padding: var(--space-2) var(--space-4);
  background: var(--color-solid);
  color: var(--color-solid-ink);
  font-weight: 800;
  translate: 0 -200%;
}

.skip-link:focus {
  translate: 0 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.blog-shell {
  width: min(100% - 2 * var(--space-5), 58rem);
  margin-inline: auto;
}

/* Header: the lockup names the house, the language control names the other
   edition of the same page. */
.blog-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-4);
  min-height: 5rem;
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-rule);
}

.blog-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 2.75rem;
  text-decoration: none;
}

.blog-brand img {
  display: block;
  width: auto;
  height: 1.6rem;
}

.blog-brand-name {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-rule);
  font-weight: 800;
  letter-spacing: 0.01em;
}

.blog-language {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
  padding-inline: var(--space-4);
  border: var(--border-thin) solid var(--color-rule);
  border-radius: var(--radius-control);
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
  text-decoration: none;
}

/* Language and theme sit together at the end of the header. */
.blog-tools {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* The same AUTO / LIGHT / DARK control as quavern.com, built by
   assets/theme-control.js and hidden until that script makes it work. */
.theme-toggle {
  display: flex;
  min-height: var(--control-height);
  border: var(--border-thin) solid var(--color-rule);
  background: var(--color-paper);
}

.theme-toggle:not([data-theme-toggle]) {
  visibility: hidden;
}

.theme-toggle__legend {
  display: none;
}

.theme-toggle__option {
  position: relative;
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
}

.theme-toggle__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.theme-toggle__label {
  display: inline-flex;
  min-height: var(--control-height);
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  padding-inline: var(--space-3);
  color: var(--color-ink);
  cursor: pointer;
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
  line-height: 1;
  white-space: nowrap;
}

.theme-toggle__option + .theme-toggle__option .theme-toggle__label {
  border-inline-start: var(--border-thin) solid var(--color-rule);
}

.theme-toggle__input:checked + .theme-toggle__label {
  background: var(--color-solid);
  color: var(--color-solid-ink);
}

.theme-toggle__input:checked + .theme-toggle__label::before {
  position: absolute;
  inset-block-start: var(--space-1);
  inset-inline-start: var(--space-1);
  width: 0.4rem;
  height: 0.4rem;
  background: var(--color-contact);
  content: "";
}

.theme-toggle__input:focus-visible + .theme-toggle__label {
  outline: var(--border-heavy) solid var(--color-focus);
  outline-offset: 3px;
}

@media (forced-colors: active) {
  .theme-toggle__input:checked + .theme-toggle__label {
    forced-color-adjust: none;
    background: Highlight;
    color: HighlightText;
  }
}

/* Stream opening: the blog's name at display scale and one line saying what
   it keeps. */
.blog-intro {
  display: grid;
  gap: var(--space-4);
  padding-block: var(--space-9) var(--space-7);
}

.blog-intro h1,
.entry--page .entry-title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 900;
  line-height: var(--line-tight);
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.blog-intro p {
  max-width: 46ch;
  color: var(--color-ink-soft);
  font-size: var(--text-lead);
  line-height: 1.4;
  text-wrap: pretty;
}

.blog-intro .blog-feed-link {
  color: var(--color-ink);
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
}

/* The stream. The rail is the list's own left edge; each entry sets its date
   against it and hangs a contact on the line. */
.stream {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: var(--border-thin) solid var(--color-rule);
}

.entry {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  column-gap: var(--space-6);
  padding: var(--space-7) 0 var(--space-8) var(--space-6);
}

.stream > li + li .entry {
  border-top: var(--border-thin) solid var(--color-plane);
}

/* The rail runs on to the footer rule, as it does on a permalink page. */
.stream > li:last-child .entry {
  padding-bottom: var(--space-9);
}

.entry-rail {
  position: relative;
  display: grid;
  align-content: start;
  gap: var(--space-1);
  padding-top: 0.45rem;
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
  font-variant-numeric: tabular-nums;
}

.entry-rail::before {
  position: absolute;
  top: 0.75rem;
  left: calc(-1 * var(--space-6) - 0.3125rem - var(--border-thin) / 2);
  width: 0.625rem;
  height: 0.625rem;
  background: var(--color-ink);
  content: "";
}

.entry--current .entry-rail::before {
  background: var(--color-contact);
}

.entry-rail span {
  color: var(--color-ink-soft);
  font-weight: 700;
}

.entry-main {
  min-width: 0;
}

.entry-title {
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: var(--text-heading);
  font-weight: 800;
  line-height: var(--line-heading);
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.entry-title a {
  text-decoration: none;
}

.entry-meta {
  display: none;
  margin-top: var(--space-3);
  color: var(--color-ink-soft);
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
  font-variant-numeric: tabular-nums;
}

.entry-lede {
  max-width: 34rem;
  margin-top: var(--space-5);
  font-size: var(--text-lead);
  line-height: 1.42;
  text-wrap: pretty;
}

.entry-body {
  max-width: 34rem;
  margin-top: var(--space-6);
}

.entry-body > * + * {
  margin-top: var(--space-4);
}

.entry-body p,
.entry-body li {
  text-wrap: pretty;
}

.entry-body :is(h2, h3, h4) {
  margin-top: var(--space-7);
  font-size: var(--text-lead);
  font-weight: 800;
  line-height: 1.2;
}

.entry-body :is(h2, h3, h4) + * {
  margin-top: var(--space-3);
}

.entry-body ul,
.entry-body ol {
  padding-left: 0;
}

.entry-body ul {
  list-style: none;
}

.entry-body ol {
  padding-left: 1.4rem;
}

.entry-body ul li {
  position: relative;
  padding-left: 1.4rem;
}

.entry-body li + li {
  margin-top: var(--space-2);
}

.entry-body ul li::before {
  position: absolute;
  top: 0.68em;
  left: 0.2rem;
  width: 0.4rem;
  height: 0.4rem;
  background: var(--color-ink);
  content: "";
}

.entry-body blockquote {
  margin-top: var(--space-7);
  padding-left: var(--space-5);
  border-left: var(--border-thin) solid var(--color-rule);
  font-size: var(--text-title);
  font-weight: 700;
  line-height: 1.25;
  text-wrap: balance;
}

.entry-body code {
  font-family: var(--font-code);
  font-size: 0.92em;
}

.entry-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: flex-start;
  gap: var(--space-3) var(--space-6);
  max-width: 34rem;
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-rule);
}

.entry-signature {
  font-weight: 800;
}

.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-5);
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
}

.entry-links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
}

/* A permalink page is the same entry at the scale of a page. */
.entry--page {
  padding-block: var(--space-7) var(--space-9);
  border-left: var(--border-thin) solid var(--color-rule);
}

.entry--page .entry-title {
  max-width: 22ch;
  font-size: clamp(2.6rem, 1.7rem + 3.2vw, 4.75rem);
}

.post-back {
  padding-top: var(--space-5);
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
}

.post-back a {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
}

/* The root: both editions side by side, each with its latest words. */
.home-editions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: var(--space-9);
  border-top: var(--border-thin) solid var(--color-rule);
}

.home-edition {
  display: grid;
  align-content: start;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-6) var(--space-7) 0;
}

.home-edition + .home-edition {
  padding-left: var(--space-6);
  border-left: var(--border-thin) solid var(--color-rule);
}

.home-edition h2 {
  font-family: var(--font-display);
  font-size: var(--text-title);
  font-weight: 800;
  line-height: var(--line-heading);
}

.home-edition h2 a {
  text-decoration: none;
}

.home-latest {
  display: grid;
  gap: var(--space-4);
  padding: 0;
  list-style: none;
}

.home-latest li {
  display: grid;
  gap: var(--space-1);
}

.home-latest time {
  color: var(--color-ink-soft);
  font-size: var(--text-label);
  font-weight: 800;
  letter-spacing: var(--tracking-label);
  font-variant-numeric: tabular-nums;
}

.home-latest a {
  font-weight: 700;
  line-height: 1.3;
}

.blog-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3) var(--space-6);
  padding-block: var(--space-6) var(--space-7);
  border-top: var(--border-thin) solid var(--color-rule);
  color: var(--color-ink-soft);
  font-size: var(--text-label);
}

.blog-footer strong {
  color: var(--color-ink);
}

.blog-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--space-5);
}

.blog-footer a {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
  color: var(--color-ink);
  font-weight: 700;
}

@media (hover: hover) and (pointer: fine) {
  a:hover {
    text-decoration-color: var(--color-accent-quiet);
    text-decoration-thickness: var(--border-heavy);
  }

  .entry-title a:hover,
  .home-edition h2 a:hover,
  .blog-brand:hover .blog-brand-name {
    text-decoration: underline;
    text-decoration-color: var(--color-accent-quiet);
    text-decoration-thickness: var(--border-heavy);
  }

  .blog-language:hover {
    background: var(--color-paper-raised);
  }
}

@media (max-width: 42rem) {
  .blog-shell {
    width: min(100% - 2 * var(--space-4), 58rem);
  }

  .blog-tools {
    width: 100%;
    justify-content: space-between;
  }

  .blog-intro {
    padding-block: var(--space-7) var(--space-6);
  }

  .entry {
    grid-template-columns: minmax(0, 1fr);
    padding: var(--space-6) 0 var(--space-7) var(--space-5);
  }

  /* The date leaves the rail and follows the title; the contact moves onto
     the title so it stays level with the first line at any title size. */
  .entry-rail {
    display: none;
  }

  .entry-title {
    position: relative;
  }

  .entry-title::before {
    position: absolute;
    top: calc(0.5lh - 0.3125rem);
    left: calc(-1 * var(--space-5) - 0.3125rem - var(--border-thin) / 2);
    width: 0.625rem;
    height: 0.625rem;
    background: var(--color-ink);
    content: "";
  }

  .entry--current .entry-title::before {
    background: var(--color-contact);
  }

  .entry-meta {
    display: block;
  }

  .home-editions {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-edition,
  .home-edition + .home-edition {
    padding: var(--space-6) 0;
    border-left: 0;
  }

  .home-edition + .home-edition {
    border-top: var(--border-thin) solid var(--color-rule);
  }
}

@media print {
  .blog-header nav,
  .blog-footer nav {
    display: none;
  }
}