/* ==========================================================================
   Dark mode
   Applied when <html data-theme="dark"> (set in _includes/head/custom.html
   from the visitor's saved choice or system preference).
   ========================================================================== */

html[data-theme="dark"] {
  --dm-bg: #16181c;
  --dm-bg-alt: #1e2126;
  --dm-border: #2e333a;
  --dm-text: #d5d9de;
  --dm-muted: #9aa2ab;
  --dm-heading: #eef0f3;
  --dm-link: #7cc4dc;
  --dm-link-hover: #a9dbeb;
  color-scheme: dark;
}

html[data-theme="dark"],
html[data-theme="dark"] body {
  background-color: var(--dm-bg);
  color: var(--dm-text);
}

html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4,
html[data-theme="dark"] h5,
html[data-theme="dark"] h6,
html[data-theme="dark"] .page__title,
html[data-theme="dark"] .author__name {
  color: var(--dm-heading);
}

html[data-theme="dark"] a,
html[data-theme="dark"] .author__urls a {
  color: var(--dm-link);
}

html[data-theme="dark"] a:hover {
  color: var(--dm-link-hover);
}

html[data-theme="dark"] hr,
html[data-theme="dark"] h1,
html[data-theme="dark"] h2 {
  border-color: var(--dm-border);
}

/* Masthead and navigation */
html[data-theme="dark"] .masthead {
  background-color: var(--dm-bg);
  border-bottom-color: var(--dm-border);
}

html[data-theme="dark"] .greedy-nav {
  background: var(--dm-bg);
}

html[data-theme="dark"] .greedy-nav a {
  color: var(--dm-muted);
}

html[data-theme="dark"] .greedy-nav a:hover {
  color: var(--dm-heading);
}

html[data-theme="dark"] .greedy-nav button {
  background-color: var(--dm-bg-alt);
  color: var(--dm-text);
}

html[data-theme="dark"] .greedy-nav .hidden-links {
  background: var(--dm-bg-alt);
  border-color: var(--dm-border);
}

html[data-theme="dark"] .greedy-nav .hidden-links:before {
  border-color: var(--dm-border) transparent;
}

html[data-theme="dark"] .greedy-nav .hidden-links:after {
  border-color: var(--dm-bg-alt) transparent;
}

html[data-theme="dark"] .greedy-nav .hidden-links li {
  border-bottom-color: var(--dm-border);
}

/* Sidebar (mobile "Follow" dropdown) */
html[data-theme="dark"] .author__avatar img {
  border-color: var(--dm-border);
}

html[data-theme="dark"] .author__urls {
  background: var(--dm-bg-alt);
  border-color: var(--dm-border);
}

html[data-theme="dark"] .author__urls:before {
  border-color: var(--dm-border) transparent;
}

html[data-theme="dark"] .author__urls:after {
  border-color: var(--dm-bg-alt) transparent;
}

/* GitHub's brand color is near-black and vanishes on the dark background */
html[data-theme="dark"] .social-icons .fa-github,
html[data-theme="dark"] .social-icons .fa-github-alt,
html[data-theme="dark"] .social-icons .fa-github-square {
  color: var(--dm-text);
}

/* On wide screens the links are an inline list, not a dropdown
   (matches the template's $large breakpoint, 925px) */
@media (min-width: 57.8125em) {
  html[data-theme="dark"] .author__urls {
    background: transparent;
    border: 0;
  }
}

html[data-theme="dark"] .btn--inverse {
  background-color: transparent;
  border-color: var(--dm-border);
  color: var(--dm-text) !important;
}

/* Footer */
html[data-theme="dark"] .page__footer {
  background-color: var(--dm-bg-alt);
  border-top-color: var(--dm-border);
  color: var(--dm-muted);
}

/* Code, tables, quotes */
html[data-theme="dark"] code,
html[data-theme="dark"] pre,
html[data-theme="dark"] .highlight {
  background-color: var(--dm-bg-alt);
  color: var(--dm-text);
}

html[data-theme="dark"] table,
html[data-theme="dark"] th,
html[data-theme="dark"] td {
  border-color: var(--dm-border);
}

html[data-theme="dark"] blockquote {
  border-left-color: var(--dm-border);
}

/* ==========================================================================
   Theme toggle button (in the masthead, outside #site-nav so the
   greedy-navigation script does not treat it as its overflow button)
   ========================================================================== */

.masthead__inner-wrap {
  position: relative;
}

.masthead__menu {
  padding-right: 2.75em;
}

.theme-toggle {
  position: absolute;
  top: 50%;
  right: 1em;
  transform: translateY(-50%);
  width: 2.25em;
  height: 2.25em;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: #7a8288;
  font-size: 1em;
  line-height: 1;
  cursor: pointer;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: currentColor;
}

html[data-theme="dark"] .theme-toggle {
  color: var(--dm-muted);
}

.theme-toggle .fa-sun,
html[data-theme="dark"] .theme-toggle .fa-moon {
  display: none;
}

html[data-theme="dark"] .theme-toggle .fa-sun {
  display: inline-block;
}