/* Theme control for Anatomy v4. System preference remains the default. */
:root {
  --sk-theme-origin-x: 50vw;
  --sk-theme-origin-y: 24px;
  --sk-theme-radius: 150vmax;
}

:root[data-color-scheme="light"] { color-scheme: light; }
:root[data-color-scheme="dark"] { color-scheme: dark; }

.sk-theme-toggle {
  --toggle-bg: var(--bg, var(--paper, #e7ebe6));
  --toggle-ink: var(--text, var(--ink, #244438));
  --toggle-line: var(--line, #b8c3b8);
  --toggle-hover: var(--surface, #dbe2d8);
  position: relative;
  isolation: isolate;
  flex: 0 0 48px;
  width: 48px;
  min-width: 48px;
  height: 48px;
  min-height: 48px;
  margin: 0;
  padding: 0;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--toggle-line);
  border-radius: 0;
  background: var(--toggle-bg);
  color: var(--toggle-ink);
  font: 500 12px/1.3 SKOnest, Onest, Arial, sans-serif;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    background-color 160ms cubic-bezier(.2, .75, .25, 1),
    border-color 160ms cubic-bezier(.2, .75, .25, 1),
    color 160ms cubic-bezier(.2, .75, .25, 1),
    transform 160ms cubic-bezier(.2, .75, .25, 1);
}

.sk-theme-toggle:hover {
  background: var(--toggle-hover);
  border-color: var(--toggle-ink);
}

.sk-theme-toggle:active { transform: translateY(1px); }

.sk-theme-toggle:focus-visible {
  outline: 3px solid var(--accent, #a33f29) !important;
  outline-offset: 3px !important;
  box-shadow: none !important;
}

.sk-theme-toggle__icon {
  position: relative;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
}

.sk-theme-toggle__icon svg {
  width: 24px;
  height: 24px;
  display: block;
  fill: currentColor;
  transform: rotate(0deg);
  transition: transform 400ms cubic-bezier(.2, .75, .25, 1);
}

.sk-theme-toggle__phase {
  position: absolute;
  right: -3px;
  bottom: -3px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--toggle-bg);
  background: var(--accent, #a33f29);
  transform: rotate(0deg);
  transition:
    background-color 160ms cubic-bezier(.2, .75, .25, 1),
    border-color 160ms cubic-bezier(.2, .75, .25, 1),
    transform 400ms cubic-bezier(.2, .75, .25, 1);
}

:root[data-theme-effective="dark"] .sk-theme-toggle__icon svg { transform: rotate(180deg); }
:root[data-theme-effective="dark"] .sk-theme-toggle__phase {
  background: var(--toggle-ink);
  transform: rotate(90deg);
}

.sk-theme-toggle__hint {
  position: absolute;
  z-index: 3;
  inset: calc(100% + 10px) 0 auto auto;
  width: max-content;
  max-width: min(260px, calc(100vw - 32px));
  padding: 9px 11px;
  border: 1px solid var(--toggle-line);
  background: var(--toggle-bg);
  color: var(--toggle-ink);
  font: 500 11px/1.45 SKMono, Mono, monospace;
  letter-spacing: .02em;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition:
    opacity 160ms cubic-bezier(.2, .75, .25, 1),
    transform 160ms cubic-bezier(.2, .75, .25, 1);
}

.sk-theme-status {
  position: fixed;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.sk-theme-toggle:is(:hover, :focus-visible) .sk-theme-toggle__hint {
  opacity: 1;
  transform: none;
}

.sk-theme-mobile-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
  padding-block: 10px;
  border-bottom: 1px solid var(--line, #b8c3b8);
  color: var(--text, var(--ink, #244438));
}

.sk-theme-mobile-row > span {
  font: 500 13px/1.4 SKOnest, Onest, Arial, sans-serif;
}

.sk-theme-mobile-row .sk-theme-toggle__hint { display: none; }

.site-nav > .sk-theme-toggle { margin-left: auto; }
.header-inner > .sk-theme-toggle { margin-left: 0; }

/* Keep the approved navigation centered; the theme control does not take layout space. */
@media (min-width: 951px) {
  .site-nav { position: relative; }

  .site-nav > nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .site-nav > .sk-theme-toggle {
    position: absolute;
    right: var(--gutter, 42px);
    margin: 0;
  }
}

@media (min-width: 60rem) {
  .site-header .header-inner { position: relative; }

  .site-header .desktop-nav {
    position: absolute;
    left: 50%;
    margin-left: 0;
    transform: translateX(-50%);
  }

  .site-header .header-cta {
    position: absolute;
    right: 72px;
  }

  .header-inner > .sk-theme-toggle {
    position: absolute;
    right: 0;
    margin: 0;
  }
}

.sk-theme-toggle--fallback {
  position: fixed;
  z-index: 40;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
}

::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}

html.sk-theme-transition::view-transition-old(root) { z-index: 1; }

html.sk-theme-transition::view-transition-new(root) {
  z-index: 2;
  animation: sk-theme-circle-reveal 560ms cubic-bezier(.2, .75, .25, 1) both;
}

@keyframes sk-theme-circle-reveal {
  from { clip-path: circle(0 at var(--sk-theme-origin-x) var(--sk-theme-origin-y)); }
  to { clip-path: circle(var(--sk-theme-radius) at var(--sk-theme-origin-x) var(--sk-theme-origin-y)); }
}

.sk-theme-wipe {
  position: fixed;
  z-index: 190;
  left: var(--sk-theme-origin-x);
  top: var(--sk-theme-origin-y);
  width: calc(var(--sk-theme-radius) * 2);
  height: calc(var(--sk-theme-radius) * 2);
  border-radius: 50%;
  background: var(--sk-theme-wipe-color);
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0);
}

@media (max-width: 59.999rem) {
  .header-inner > .sk-theme-toggle { display: none; }
}

@media (max-width: 950px) {
  .site-nav > .sk-theme-toggle { display: none; }
}

@media (min-width: 60rem) {
  .site-header .sk-theme-mobile-row { display: none; }
}

@media (min-width: 951px) {
  .site-nav .sk-theme-mobile-row { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .sk-theme-toggle,
  .sk-theme-toggle__icon svg,
  .sk-theme-toggle__phase,
  .sk-theme-toggle__hint {
    transition: none;
  }

  html.sk-theme-transition::view-transition-new(root) { animation: none; }
  .sk-theme-wipe { display: none; }
}

@media print {
  .sk-theme-toggle,
  .sk-theme-mobile-row,
  .sk-theme-wipe { display: none !important; }
}