/* Finite, quiet interaction cues. Scene rendering and download cards own their motion. */
:root {
  --ui-ease: cubic-bezier(.22,.75,.25,1);
  --ui-fast: 140ms;
  --ui-settle: 220ms;
  --ui-accent: var(--guide-accent, var(--green));
}

:where(button,summary,.btn,.nav-link,.mobile-nav a,.guide-contents a,.guide-link,.guide-home,.text-link) {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

:is(.btn:not(.download-button),.icon-button,.header-download,.nav-link,.mobile-nav a,.guide-home,.guide-contents a,.theme-menu button,.feature-tabs>button,.version-tabs>button,.segmented-control>button,.changelog-show-more) {
  transition: background-color var(--ui-fast) ease, color var(--ui-fast) ease,
    border-color var(--ui-fast) ease, box-shadow var(--ui-settle) ease,
    transform var(--ui-settle) var(--ui-ease);
}

/* Press scale is owned by scene-motion so old transform presses cannot compound it. */
html[data-ui-motion="running"] :is(.btn:not(.download-button),.icon-button,.filter-button,.feature-tabs>button,.version-tabs>button,.segmented-control>button,.island-download)[data-ui-press]:active {
  transform: translateY(0);
}
.btn:not(.download-button)::after,
.btn > .tap-ripple,
.island-download::after { display: none; }

.mobile-nav { animation: none; }
.mobile-menu-button > span { transition-duration: 180ms; }
.theme-picker .theme-menu.glass { animation-duration: 180ms; animation-timing-function: var(--ui-ease); }
.theme-picker .theme-toggle svg { transition: transform var(--ui-settle) var(--ui-ease); }
.theme-picker .theme-toggle[aria-expanded="true"] .theme-sun { transform: rotate(30deg); }
.theme-picker .theme-toggle[aria-expanded="true"] .theme-moon { transform: rotate(-12deg); }

:is(.nav-link,.mobile-nav a,.guide-contents a,.theme-menu button):focus-visible {
  background-color: var(--soft-surface);
  color: var(--ink);
}
:where(.nav-link,.mobile-nav a,.text-link,.header-download,.automation-more a,.hero-release-link,.changelog-show-more):focus-visible {
  outline: 2px solid var(--ui-accent);
  outline-offset: 3px;
}

:is(.text-link,.guide-link,.guide-home,.automation-more a,.hero-release-link,.site-footer a:not(.brand),.guide-footer a) {
  transition: color var(--ui-fast) ease, text-decoration-color var(--ui-fast) ease;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}
:is(.text-link,.guide-link,.guide-home,.automation-more a) > :is(svg,span[aria-hidden]) {
  transition: transform var(--ui-settle) var(--ui-ease);
}
:is(.guide-link,.guide-home,.automation-more a):focus-visible > span[aria-hidden] { transform: translateX(2px); }
.text-link:focus-visible > svg { transform: translate(2px,-1px); }
.feature-tabs .feature-item { transition: transform var(--ui-settle) var(--ui-ease); }
.feature-tabs > button:focus-visible .feature-item { transform: translateY(-2px); }

/* Content cards respond through their edge and light; reading surfaces stay still. */
:is(.feature-details article,.guide-feature-card,.guide-mode-list article,.guide-install-panel,.release-detail-files li) {
  transition: border-color var(--ui-settle) ease, box-shadow var(--ui-settle) ease;
}
:is(.feature-details article,.guide-feature-card,.guide-mode-list article,.guide-install-panel,.release-detail-files li):focus-within {
  border-color: color-mix(in srgb,var(--ui-accent) 28%,var(--line));
  box-shadow: inset 0 1px 0 color-mix(in srgb,var(--ui-accent) 8%,transparent);
}
.timeline-item details { transition-duration: 200ms; }
.changelog-chevron { transition: transform 220ms var(--ui-ease); }

/* Native summary remains the keyboard control and retains the real open state. */
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  border-radius: inherit;
  transition: color var(--ui-fast) ease, background-color var(--ui-fast) ease;
}
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary::marker { content: ""; }
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary::-webkit-details-marker { display: none; }
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary::after {
  content: "";
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  margin-inline: auto 3px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  color: var(--muted);
  transform: rotate(45deg);
  transition: transform 200ms var(--ui-ease), color var(--ui-fast) ease;
}
:is(.guide-detail,.guide-faq details,.release-detail-original)[open] > summary::after { transform: rotate(225deg); }
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary[aria-expanded="false"]::after { transform: rotate(45deg); }
:is(.guide-detail,.guide-faq details)[open] > summary { border-end-start-radius: 0; border-end-end-radius: 0; }
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary:is(:active,:focus-visible) {
  color: var(--ui-accent);
  background-color: color-mix(in srgb,var(--ui-accent) 5%,transparent);
}
:is(.guide-detail,.guide-faq details,.release-detail-original) > summary:focus-visible {
  outline: 2px solid var(--ui-accent);
  outline-offset: -3px;
}
.release-detail-original > summary { min-height: 44px; padding-block: 8px; }

:is(#feedback input,#feedback select,#feedback textarea,.release-page-picker select,.release-search input) {
  transition: border-color var(--ui-fast) ease, background-color var(--ui-fast) ease, box-shadow var(--ui-fast) ease;
}
:is(#feedback input,#feedback select,#feedback textarea,.release-page-picker select,.release-search input):focus {
  border-color: var(--ui-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb,var(--ui-accent) 9%,transparent);
}

@media (hover: hover) and (pointer: fine) {
  .btn:not(.download-button):hover { transform: translateY(-2px); }
  .icon-button:hover { transform: translateY(-1px); }
  .feature-tabs > button:hover { transform: translateY(-1px); }
  .feature-tabs > button:hover .feature-item { transform: translateY(-2px) rotate(-3deg); }
  :is(.guide-link,.guide-home,.automation-more a):hover > span[aria-hidden] { transform: translateX(2px); }
  .text-link:hover > svg { transform: translate(2px,-1px); }
  :is(.feature-details article,.guide-feature-card,.guide-mode-list article,.guide-install-panel,.release-detail-files li):hover {
    border-color: color-mix(in srgb,var(--ui-accent) 28%,var(--line));
    box-shadow: inset 0 1px 0 color-mix(in srgb,var(--ui-accent) 8%,transparent);
  }
  :is(.guide-detail,.guide-faq details,.release-detail-original) > summary:hover {
    color: var(--ui-accent);
    background-color: color-mix(in srgb,var(--ui-accent) 5%,transparent);
  }
}

/* Touch uses the short press response, without a sticky desktop hover lift. */
@media (hover: none), (pointer: coarse) {
  .btn:not(.download-button):hover,.icon-button:hover,.feature-tabs > button:hover,
  .text-link:hover svg,.btn:not(.download-button):hover > svg:last-child { transform: none; }
}

html[data-ui-motion="paused"] :is(.btn,.icon-button,.header-download,.nav-link,.mobile-nav,.mobile-nav a,.theme-menu,.theme-toggle svg,.theme-menu button,.guide-home,.guide-link,.guide-contents a,.text-link,.feature-tabs button,.feature-item,.version-tabs button,.segmented-control button,.changelog-show-more,.changelog-chevron,.feature-details article,.guide-feature-card,.guide-mode-list article,.guide-install-panel,.release-detail-files li,.guide-detail summary,.guide-faq summary,.release-detail-original summary) {
  transition: none !important;
  animation: none !important;
}
html[data-ui-motion="paused"] :is(.guide-detail,.guide-faq details,.release-detail-original) > summary::after { transition: none; }

@media (prefers-reduced-motion: reduce) {
  :is(.btn:not(.download-button),.icon-button,.feature-tabs>button):is(:hover,:active),
  .feature-tabs .feature-item,.theme-picker .theme-toggle svg,
  :is(.text-link,.guide-link,.guide-home,.automation-more a) > :is(svg,span[aria-hidden]) { transform: none !important; }
  :is(.guide-detail,.guide-faq details,.release-detail-original) > summary::after { transition: none; }
}