/*
 * Color themes
 *
 * The light theme is the default. The dark theme is used when the visitor's
 * system prefers a dark color scheme, unless overridden via the theme toggle
 * button (which sets the `data-theme` attribute on the `<html>` element).
 */

:root {
  color-scheme: light;
  --bg: #fff;
  --bg-alt: #f9f9f9;
  --text: #515151;
  --text-muted: #7a7a7a;
  --text-light: #9a9a9a;
  --text-faint: #c0c0c0;
  --gray: gray;
  --heading: #313131;
  --subheading: #4a6a8a;
  --masthead: #505050;
  --link: #268bd2;
  --code: #bf616a;
  --heading-code: #a0565c;
  --border: #e5e5e5;
}

/* Keep the dark color definitions below in sync */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #1b1d21;
    --bg-alt: #24272c;
    --text: #c8c8c8;
    --text-muted: #9a9a9a;
    --text-light: #8a8a8a;
    --text-faint: #6a6a6a;
    --gray: #8f8f8f;
    --heading: #e6e6e6;
    --subheading: #8fb0d0;
    --masthead: #d0d0d0;
    --link: #4fa8e8;
    --code: #e0868e;
    --heading-code: #e0868e;
    --border: #363a40;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #1b1d21;
  --bg-alt: #24272c;
  --text: #c8c8c8;
  --text-muted: #9a9a9a;
  --text-light: #8a8a8a;
  --text-faint: #6a6a6a;
  --gray: #8f8f8f;
  --heading: #e6e6e6;
  --subheading: #8fb0d0;
  --masthead: #d0d0d0;
  --link: #4fa8e8;
  --code: #e0868e;
  --heading-code: #e0868e;
  --border: #363a40;
}

/* Theme toggle button */

.masthead .container {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.theme-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-self: center;
  padding: .3rem;
  line-height: 0;
  color: var(--text-light);
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--heading);
  border-color: var(--text-light);
}

.theme-toggle svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Show the icon of the theme that the button switches to */
.theme-toggle .icon-sun,
.theme-toggle[data-current="dark"] .icon-moon {
  display: none;
}

.theme-toggle[data-current="dark"] .icon-sun {
  display: block;
}

.theme-toggle[hidden] {
  display: none;
}