/* ============================================================
   MUSHROOM SUBSTRATE SCIENCE — Clinical Research Lab Design
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --color-bg: #F8F9FA;
  --color-surface: #FFFFFF;
  --color-text: #1A1D23;
  --color-heading: #0D1B2A;
  --color-accent: #00838F;
  --color-accent-hover: #006974;
  --color-secondary: #546E7A;
  --color-border: #DEE2E6;
  --color-code-bg: #F1F3F5;
  --color-warning: #E8A317;
  --color-warning-bg: #FFF8E1;
  --color-muted: #6C757D;

  --font-display: 'Libre Baskerville', Georgia, 'Times New Roman', serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;

  --line-height: 1.75;
  --line-height-heading: 1.25;

  --radius: 3px;
  --max-width: 1140px;
  --content-width: 740px;
  --sidebar-width: 260px;
  --gap: 2rem;

  --header-height: 56px;
}

/* Global responsive overflow fix */
html { overflow-x: hidden; }
img, video, table, pre, code { max-width: 100%; }
.container { padding-left: 1rem; padding-right: 1rem; box-sizing: border-box; }
.article__body img { height: auto; }
.article__body table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.article__body pre { overflow-x: auto; }


/* --- Reset --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(0, 0, 0, 0.018) 39px, rgba(0, 0, 0, 0.018) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(0, 0, 0, 0.018) 39px, rgba(0, 0, 0, 0.018) 40px);
  background-size: 40px 40px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

ul, ol {
  padding-left: 1.5em;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-heading);
  line-height: var(--line-height-heading);
  font-weight: 600;
}

h1, h2, h3 { text-wrap: balance; }

h1 { font-size: 2.25rem; margin-bottom: 0.75rem; letter-spacing: -0.02em; }
h2 { font-size: 1.625rem; margin-top: 2.5rem; margin-bottom: 0.625rem; }
h3 { font-size: 1.3rem; margin-top: 2rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.1rem; margin-top: 1.5rem; margin-bottom: 0.4rem; }

p {
  margin-bottom: 1.25rem;
}

blockquote {
  border-left: 3px solid var(--color-accent);
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--color-surface);
  font-style: italic;
  color: var(--color-secondary);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

/* --- Code --- */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.5;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.site-header__inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.site-logo:hover {
  color: var(--color-accent);
}

.site-logo__icon {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.site-nav__link {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-secondary);
  text-decoration: none;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius);
  transition: color 0.15s ease, background 0.15s ease;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--color-accent);
  background: rgba(0, 131, 143, 0.06);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  margin: 4px 0;
  transition: transform 0.2s ease;
}

/* --- Main Layout --- */
.site-main {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  font-size: 0.8rem;
  color: var(--color-muted);
  padding: 1rem 0 0;
  font-family: var(--font-body);
}

.breadcrumbs a {
  color: var(--color-secondary);
}

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

.breadcrumbs__sep {
  margin: 0 0.4rem;
  color: var(--color-border);
}

/* --- Homepage --- */

/* Featured Article */
.featured {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.featured__image {
  margin-bottom: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 800px;
}

.featured__image img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
}

.featured__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 1rem;
  display: block;
}

.featured__title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.15;
  margin-bottom: 0.75rem;
  max-width: 720px;
}

.featured__title a {
  color: inherit;
  text-decoration: none;
}

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

.featured__excerpt {
  font-size: 1.1rem;
  color: var(--color-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.featured__meta {
  font-size: 0.8rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
}

/* Topic Clusters */
.topic-clusters {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: block;
}

.cluster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.cluster-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0;
  text-decoration: none;
  transition: border-color 0.15s ease;
  display: block;
  overflow: hidden;
}

.cluster-card__image {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}

.cluster-card__icon,
.cluster-card__title,
.cluster-card__desc,
.cluster-card__count {
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.cluster-card__icon {
  padding-top: 1rem;
}

.cluster-card:hover {
  border-color: var(--color-accent);
}

.cluster-card__icon {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  display: block;
}

.cluster-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.35rem;
  line-height: 1.3;
}

.cluster-card__desc {
  font-size: 0.825rem;
  color: var(--color-muted);
  line-height: 1.55;
}

.cluster-card__count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-secondary);
  margin-top: 0.75rem;
  padding-bottom: 1.25rem;
  display: block;
}

/* Latest Articles */
.latest-articles {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.article-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.article-card {
  display: block;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  transition: background 0.15s ease;
}

.article-card:last-child {
  border-bottom: none;
}

.article-card:hover {
  background: rgba(0, 131, 143, 0.02);
}

.article-card__category {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
  display: block;
}

.article-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.25rem;
  line-height: 1.35;
}

.article-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0.35rem;
}

.article-card__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-secondary);
}

/* About Snippet */
.about-snippet {
  padding: 3rem 0;
}

.about-snippet__text {
  max-width: 640px;
  font-size: 1rem;
  color: var(--color-secondary);
  line-height: 1.75;
}

.about-snippet__text a {
  font-weight: 500;
}

/* --- List / Section Pages --- */
.section-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.section-header__title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.section-header__desc {
  font-size: 1rem;
  color: var(--color-secondary);
  max-width: 600px;
}

.section-content {
  padding: 1rem 0 3rem;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

@media (min-width: 640px) {
  .article-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0 2rem;
  }
}

.article-grid .article-card {
  padding: 1.25rem 0;
}

/* --- Single Article --- */
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  padding: 2rem 0 3rem;
  align-items: start;
}

@media (min-width: 960px) {
  .article-layout {
    grid-template-columns: var(--content-width) 1fr;
  }
}

/* Article Header */
.article__header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.article__category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: inline-block;
}

.article__category a {
  color: inherit;
}

.article__title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

.article__meta {
  font-family: var(--font-mono);
  font-size: 0.775rem;
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.article__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Article Body */
.article__body {
  font-size: 1.0125rem;
  line-height: 1.8;
}

.article__body h2 {
  font-size: 1.5rem;
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.article__body h3 {
  font-size: 1.2rem;
  margin-top: 2rem;
}

.article__body ul,
.article__body ol {
  margin-bottom: 1.25rem;
}

.article__body li {
  margin-bottom: 0.35rem;
}

.article__body img {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin: 1.5rem 0;
}

/* Sidebar / Table of Contents */
.article-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.toc__title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.toc__list {
  list-style: none;
  padding: 0;
}

.toc__list li {
  margin-bottom: 0.3rem;
}

.toc__list a {
  font-size: 0.8rem;
  color: var(--color-secondary);
  text-decoration: none;
  display: block;
  padding: 0.2rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.toc__list a:hover,
.toc__list a.active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

.toc__list ul {
  padding-left: 0.75rem;
  list-style: none;
}

.toc__list ul a {
  font-size: 0.75rem;
}

/* Tags */
.article__tags {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.article__tags-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-right: 0.25rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-secondary);
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.2rem 0.6rem;
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* References / Citations */
.references {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--color-border);
}

.references__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.references__list {
  list-style: none;
  padding: 0;
  counter-reset: ref;
}

.references__list li {
  counter-increment: ref;
  font-size: 0.85rem;
  color: var(--color-secondary);
  line-height: 1.6;
  margin-bottom: 0.6rem;
  padding-left: 2rem;
  position: relative;
}

.references__list li::before {
  content: "[" counter(ref) "]";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* --- Data Tables --- */
.data-table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead {
  background: var(--color-heading);
  color: #FFFFFF;
}

th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.75rem 1rem;
  text-align: left;
  white-space: nowrap;
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

tbody tr:nth-child(even) {
  background: var(--color-code-bg);
}

tbody tr:hover {
  background: rgba(0, 131, 143, 0.04);
}

/* Numeric data alignment */
td.num,
th.num {
  text-align: right;
  font-family: var(--font-mono);
}

/* --- Callout / Note Boxes --- */
.callout {
  border-left: 3px solid var(--color-accent);
  background: var(--color-surface);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.callout--warning {
  border-left-color: var(--color-warning);
  background: var(--color-warning-bg);
}

.callout__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.4rem;
}

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

/* --- Footer --- */
.site-footer {
  background: var(--color-heading);
  color: rgba(255, 255, 255, 0.65);
  padding: 3rem 0 2rem;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 0.75rem;
}

.footer-col p {
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
}

.footer-col__links {
  list-style: none;
  padding: 0;
}

.footer-col__links li {
  margin-bottom: 0.35rem;
}

.footer-col__links a {
  font-size: 0.825rem;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.45);
}

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

.article-hero {
  width: 100%;
  height: auto;
  border-radius: 3px;
  margin-bottom: 1.5rem;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.article-card__image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 3px;
  margin-bottom: 0.5rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --header-height: 52px;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.35rem; }

  .featured__title {
    font-size: 1.75rem;
  }

  .site-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 0.75rem 1.5rem;
    gap: 0;
  }

  .site-nav--open {
    display: flex;
  }

  .site-nav__link {
    padding: 0.6rem 0;
    border-radius: 0;
  }

  .nav-toggle {
    display: block;
  }

  .article-sidebar {
    display: none;
  }

  .cluster-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .cluster-grid {
    grid-template-columns: 1fr;
  }

  .article__meta {
    flex-direction: column;
    gap: 0.35rem;
  }
}

/* --- Print --- */
@media print {
  .site-header,
  .site-footer,
  .article-sidebar,
  .breadcrumbs {
    display: none;
  }

  .site-main {
    margin-top: 0;
  }

  body {
    background: white;
    background-image: none;
    color: black;
  }
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.6rem 1.2rem;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0.75rem;
  color: #fff;
}

/* --- Focus-Visible --- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* --- Social Sharing --- */
.share-bar {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.share-bar__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-bottom: 0.75rem;
  display: block;
}

.share-bar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.share-bar__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-secondary);
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.share-bar__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.share-bar__btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- prefers-reduced-motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- Dark Mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0d1117;
    --color-surface: #161b22;
    --color-text: #e6edf3;
    --color-heading: #e6edf3;
    --color-accent: #00a8b5;
    --color-accent-hover: #00c4d4;
    --color-secondary: #8b949e;
    --color-border: #30363d;
    --color-code-bg: #161b22;
    --color-warning: #e8a317;
    --color-warning-bg: #2a2000;
    --color-muted: #8b949e;
  }

  body {
    background-image:
      repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255, 255, 255, 0.02) 39px, rgba(255, 255, 255, 0.02) 40px),
      repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255, 255, 255, 0.02) 39px, rgba(255, 255, 255, 0.02) 40px);
  }

  thead {
    background: #1c2128;
  }

  tbody tr:nth-child(even) {
    background: #161b22;
  }

  tbody tr:nth-child(odd) {
    background: #1c2128;
  }

  tbody tr:hover {
    background: rgba(0, 168, 181, 0.08);
  }

  .site-header {
    background: #161b22;
    border-bottom-color: #30363d;
  }

  .site-nav__link:hover,
  .site-nav__link--active {
    background: rgba(0, 168, 181, 0.1);
  }

  .site-footer {
    background: #0d1117;
  }

  .cluster-card {
    background: #1c2128;
  }

  .article-card:hover {
    background: rgba(0, 168, 181, 0.04);
  }

  .toc {
    background: #1c2128;
    border-color: #30363d;
  }

  .callout {
    background: #1c2128;
  }

  .callout--warning {
    background: #2a2000;
  }

  .share-bar__btn {
    background: #1c2128;
  }

  img {
    opacity: 0.9;
  }
}

/* Logo icon in header */




@media (max-width: 480px) {
  
}


/* Site logo in header */


@media (min-width: 768px) {
  
}

/* Header logo */
.site-logo { display: flex; align-items: center; }
.site-logo__img { height: 36px; width: auto; }
@media (min-width: 768px) { .site-logo__img { height: 44px; } }