:root {
  --theme-bg-light: #f5f5f5;
  --theme-bg-dark: #1f252d;
  --theme-bg: #f5f5f5;
  --theme-surface: #ffffff;
  --theme-surface-muted: #f8f8f8;
  --theme-text: #404040;
  --theme-heading: #404040;
  --theme-muted: #808080;
  --theme-border: #d8d8d8;
  --theme-link: #008aff;
  --theme-link-hover: #0085a1;
  --theme-input-bg: #ffffff;
  --theme-input-text: #303030;
}

html {
  color-scheme: light;
}

html.theme-dark {
  color-scheme: dark;
  --theme-bg: var(--theme-bg-dark);
  --theme-surface: #27323d;
  --theme-surface-muted: #222c36;
  --theme-text: #e4e9ef;
  --theme-heading: #f2f6fb;
  --theme-muted: #b7c1cc;
  --theme-border: #445466;
  --theme-link: #7cc4ff;
  --theme-link-hover: #a4d6ff;
  --theme-input-bg: #1f2730;
  --theme-input-text: #edf2f8;
}

body {
  background: var(--theme-bg);
  color: var(--theme-text);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--theme-heading);
}

a {
  color: var(--theme-link);
}

a:hover,
a:focus {
  color: var(--theme-link-hover);
}

blockquote {
  color: var(--theme-muted);
}

footer {
  background: var(--theme-bg);
  border-top-color: var(--theme-border);
}

footer a,
footer .text-muted {
  color: var(--theme-text);
}

footer.footer-min {
  background-color: var(--theme-bg);
  border-top-color: var(--theme-border);
}

table tr {
  border-top-color: var(--theme-border);
}

html.theme-dark table tr {
  background-color: var(--theme-surface-muted);
}

html.theme-dark table tr:nth-child(2n) {
  background-color: #1e262f;
}

html.theme-dark table tr th,
html.theme-dark table tr td {
  border-color: var(--theme-border);
  color: var(--theme-text);
}

html.theme-dark .post-preview {
  border-bottom-color: var(--theme-border);
}

html.theme-dark .post-preview a {
  color: var(--theme-heading);
}

html.theme-dark .post-preview .post-meta,
html.theme-dark .blog-tags,
html.theme-dark .caption,
html.theme-dark .post-card__meta {
  color: var(--theme-muted);
}

html.theme-dark .blog-tags a:hover {
  background-color: #3a4551;
}

html.theme-dark .navbar-custom {
  border-bottom-color: #2f4f4f;
}

html.theme-dark .header-section.has-img .no-img {
  background: var(--theme-surface-muted);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.45);
}

html.theme-dark .pager li a {
  background: var(--theme-surface);
  border-color: var(--theme-border);
  color: var(--theme-text);
}

html.theme-dark .pager li a:hover,
html.theme-dark .pager li a:focus {
  color: #f7fbff;
  border-color: var(--theme-link-hover);
}

html.theme-dark .post-card {
  background: var(--theme-surface);
  border-color: var(--theme-border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

html.theme-dark .post-card__title,
html.theme-dark .post-card__subtitle {
  color: var(--theme-text);
}

html.theme-dark .badge {
  background: #324052;
  color: #dce8f4;
}

html.theme-dark .badge--kind {
  background: #234b3f;
  color: #d2f6e8;
}

html.theme-dark .badge--theme {
  background: #3d3357;
  color: #e7def8;
}

html.theme-dark .badge--source {
  background: #5b3f30;
  color: #ffe6d4;
}

html.theme-dark .filter-bar select,
html.theme-dark .filter-bar input {
  background: var(--theme-input-bg);
  border-color: var(--theme-border);
  color: var(--theme-input-text);
}

html.theme-dark .filter-bar input::placeholder {
  color: #9fb0c1;
}

html.theme-dark #no-results {
  color: #ffabab;
}

html.theme-dark .MathJax,
html.theme-dark .MathJax_Display,
html.theme-dark .mjx-chtml {
  color: var(--theme-text) !important;
}

html.theme-dark :not(pre) > code {
  color: #e8edf4;
  background: #2d3945;
}

/* Default dark-mode image swap for content images; opt out with `theme-swap-off` or `darkmode-image="off"`. */
html.theme-dark .blog-post img:not(.theme-swap-off):not([darkmode-image="off"]):not([data-darkmode-image="off"]):not([data-theme-swap="off"]),
html.theme-dark [role="main"] img:not(.theme-swap-off):not([darkmode-image="off"]):not([data-darkmode-image="off"]):not([data-theme-swap="off"]),
html.theme-dark .main-content img:not(.theme-swap-off):not([darkmode-image="off"]):not([data-darkmode-image="off"]):not([data-theme-swap="off"]) {
  filter: invert(1);
  mix-blend-mode: lighten;
}

.theme-toggle {
  position: fixed;
  left: 16px;
  bottom: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  z-index: 1200;
  cursor: pointer;
  border: 1px solid #9aa4af;
  border-radius: 999px;
  background: #ffffff;
  color: #222222;
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  padding: 10px 14px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.theme-toggle:hover,
.theme-toggle:focus {
  background: #f2f5f7;
}

html.theme-dark .theme-toggle {
  border-color: #5e6e80;
  background: #2a3541;
  color: #f2f6fb;
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.4);
}

html.theme-dark .theme-toggle:hover,
html.theme-dark .theme-toggle:focus {
  background: #334150;
}

@media only screen and (max-width: 767px) {
  .theme-toggle {
    left: 12px;
    bottom: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom));
    font-size: 12px;
    padding: 9px 12px;
  }
}