/* =========================================================
   GLOBAL — Chrome
   Fixed header, logo theme-swap, hamburger, the full menu
   reveal system (circle -> rounded square -> full), the menu
   panel/links/preview/footer, and site footer. Shared by every
   page so the navigation behaves identically everywhere.
   ========================================================= */

.pr-header {
  position: fixed;
  z-index: 120;
  inset: 0 0 auto;
  height: var(--header-height);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 0 max(var(--space-page-x), calc((100vw - 1440px) / 2));
  color: var(--header-fg);
  transition: color var(--duration-medium) var(--ease), transform var(--duration-hover-fast) var(--ease);
}

.pr-logo {
  position: relative;
  display: block;
  width: clamp(156px, 14vw, 212px);
  height: 38px;
}

.pr-logo:hover,
.pr-logo:focus-visible {
  transform: translateY(-1px);
}

.pr-logo__asset {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: left center;
  transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}

.pr-logo__asset--light {
  opacity: 0;
  transform: translateY(2px);
}

[data-header-theme="light"] .pr-logo__asset--dark {
  opacity: 0;
  transform: translateY(-2px);
}

[data-header-theme="light"] .pr-logo__asset--light {
  opacity: 1;
  transform: translateY(0);
}

[data-header-theme="dark"] .pr-logo__asset--dark,
:root:not([data-header-theme]) .pr-logo__asset--dark {
  opacity: 1;
  transform: translateY(0);
}

.pr-menu-toggle {
  justify-self: end;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, currentColor, transparent 78%);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--page-bg), transparent 16%);
  color: inherit;
  position: relative;
  z-index: 130;
  overflow: hidden;
}

.pr-menu-toggle::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: inherit;
  background: currentColor;
  opacity: 0;
  transform: scale(0.82);
  transition: opacity var(--hover-duration) var(--ease), transform var(--hover-duration) var(--ease);
}

.pr-menu-toggle:hover,
.pr-menu-toggle:focus-visible {
  transform: translateY(-1px) scale(1.015);
}

.pr-menu-toggle:hover::before,
.pr-menu-toggle:focus-visible::before {
  opacity: 0.045;
  transform: scale(0.96);
}

.pr-menu-toggle__line {
  position: absolute;
  width: 18px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: currentColor;
  transition: transform 0.58s var(--ease), background-color var(--hover-duration) var(--ease);
}

.pr-menu-toggle__line:first-child {
  transform: translateY(-4px);
}

.pr-menu-toggle__line:last-child {
  transform: translateY(4px);
}

body[data-menu-state="open"] .pr-header {
  color: var(--pr-paper);
}

body[data-menu-state="open"] .pr-logo__asset--dark {
  opacity: 0;
  transform: translateY(-2px);
}

body[data-menu-state="open"] .pr-logo__asset--light {
  opacity: 1;
  transform: translateY(0);
}

body[data-menu-state="open"] .pr-menu-toggle__line:first-child {
  transform: rotate(45deg);
}

body[data-menu-state="open"] .pr-menu-toggle__line:last-child {
  transform: rotate(-45deg);
}

/* ---- Menu reveal system ---- */
.pr-menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  /* Diagonal opacity: solid at lower-left, easing to 90% at upper-right. */
  background: linear-gradient(
    to top right,
    var(--pr-graphite) 0%,
    color-mix(in srgb, var(--pr-graphite), transparent 10%) 100%
  );
  -webkit-backdrop-filter: blur(22px) saturate(1.1);
  backdrop-filter: blur(22px) saturate(1.1);
  color: var(--pr-paper);
  clip-path: var(--menu-reveal-closed);
  visibility: hidden;
  pointer-events: none;
  overflow-y: auto;
  will-change: clip-path;
  transition:
    clip-path 0.92s var(--ease),
    visibility 0s linear 0.92s;
}

body[data-menu-state="closed"] .pr-menu-overlay {
  clip-path: var(--menu-reveal-closed);
  visibility: hidden;
  pointer-events: none;
}

body[data-menu-state="opening"] .pr-menu-overlay {
  clip-path: var(--menu-reveal-start);
  visibility: visible;
  pointer-events: auto;
  transition:
    clip-path 0.92s var(--ease),
    visibility 0s linear;
}

body[data-menu-state="holding"] .pr-menu-overlay {
  clip-path: var(--menu-reveal-hold);
  visibility: visible;
  pointer-events: auto;
  transition:
    clip-path 0.52s var(--ease),
    visibility 0s linear;
}

body[data-menu-state="open"] .pr-menu-overlay {
  clip-path: var(--menu-reveal-open);
  visibility: visible;
  pointer-events: auto;
  transition:
    clip-path 0.78s var(--ease),
    visibility 0s linear;
}

/* Menu is visually cleared once a link hands off to the global page curtain. */
body[data-menu-state="exiting"] .pr-menu-overlay {
  clip-path: var(--menu-reveal-open);
  visibility: visible;
  pointer-events: none;
}

body[data-menu-state="exiting"] .pr-menu-panel {
  opacity: 0;
}

.pr-menu-panel {
  min-height: 100svh;
  width: min(100% - 48px, 1280px);
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: var(--space-stack-xl);
  padding: var(--space-section-y-tight) 0 var(--space-stack-xl);
  position: relative;
}

/* Landing-direction switcher, pinned to the top of the menu so it is
   always visible above the big-word nav. */
.pr-menu-versions {
  display: none;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-row-xs) var(--space-row-sm);
  font-weight: 700;
  font-size: var(--type-small);
  position: relative;
  z-index: 2;
}

.pr-menu-versions > span {
  font-size: var(--type-tiny);
  letter-spacing: var(--tracking-kicker);
  text-transform: uppercase;
  opacity: 0.5;
  margin-right: var(--radius-xs);
}

.pr-menu-versions a {
  position: relative;
  padding: var(--space-row-xs) var(--space-row-sm);
  border-radius: var(--radius-pill);
  border: 1px solid color-mix(in srgb, var(--pr-paper), transparent 80%);
  color: color-mix(in srgb, var(--pr-paper), transparent 18%);
  transition: color var(--duration-hover-fast) var(--ease), border-color var(--duration-hover-fast) var(--ease), background-color var(--duration-hover-fast) var(--ease);
}

.pr-menu-versions a:hover,
.pr-menu-versions a:focus-visible {
  color: var(--pr-paper);
  border-color: var(--pr-paper);
}

.pr-menu-versions a[aria-current="page"] {
  color: var(--pr-ink);
  background: var(--pr-rocket);
  border-color: var(--pr-rocket);
}

.pr-menu-nav {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-section-head);
  padding-block: var(--space-stack-xl);
  position: relative;
  z-index: 2;
}

.pr-menu-link {
  width: fit-content;
  display: block;
  opacity: 0;
  transform: translateY(22px);
  transition:
    color 0.72s var(--ease),
    opacity 0.72s var(--ease),
    transform 0.72s var(--ease);
}

body[data-menu-state="open"] .pr-menu-link {
  opacity: 1;
  transform: translate(0, 0);
}

body[data-menu-state="open"] .pr-menu-link:nth-child(1) {
  transition-delay: 0.16s;
}

body[data-menu-state="open"] .pr-menu-link:nth-child(2) {
  transition-delay: 0.22s;
}

body[data-menu-state="open"] .pr-menu-link:nth-child(3) {
  transition-delay: 0.28s;
}

body[data-menu-state="open"] .pr-menu-link:nth-child(4) {
  transition-delay: 0.34s;
}

body[data-menu-state="open"] .pr-menu-link:nth-child(5) {
  transition-delay: 0.4s;
}

body[data-menu-state="open"] .pr-menu-link:nth-child(6) {
  transition-delay: 0.46s;
}

body[data-menu-state="open"] .pr-menu-link:nth-child(7) {
  transition-delay: 0.52s;
}

.pr-menu-link span {
  display: block;
  position: relative;
  font-family: var(--font-display);
  font-size: var(--type-page-hero);
  font-weight: 800;
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display-tight);
  color: var(--pr-paper);
  transition:
    color 0.72s var(--ease),
    transform 0.72s var(--ease),
    letter-spacing 0.72s var(--ease);
}

.pr-menu-link span::after {
  content: "";
  position: absolute;
  left: 0.05em;
  right: 100%;
  bottom: -0.08em;
  height: 0.07em;
  border-radius: var(--radius-pill);
  background: var(--pr-lime);
  opacity: 0.78;
  transition:
    right 0.72s var(--ease),
    opacity 0.72s var(--ease);
}

.pr-menu-link:hover,
.pr-menu-link:focus-visible {
  transform: translateX(5px);
}

.pr-menu-link:hover span,
.pr-menu-link:focus-visible span {
  color: var(--pr-lime);
  letter-spacing: var(--tracking-display);
  transform: translateX(6px) scale(1.015);
}

.pr-menu-link[aria-current="page"] span {
  color: var(--pr-rocket);
}

.pr-menu-link[aria-current="page"] span::after {
  right: 0.08em;
  background: var(--pr-rocket);
  opacity: 1;
}

.pr-menu-link:hover span::after,
.pr-menu-link:focus-visible span::after {
  right: 0.08em;
  opacity: 1;
}

.pr-menu-nav:has(.pr-menu-link:hover) .pr-menu-link:not(:hover),
.pr-menu-nav:has(.pr-menu-link:focus-visible) .pr-menu-link:not(:focus-visible) {
  opacity: 0.58;
}

.pr-menu-preview {
  position: fixed;
  z-index: 1;
  left: 68vw;
  top: 48vh;
  width: clamp(180px, 22vw, 340px);
  aspect-ratio: 4 / 5;
  margin: 0;
  border-radius: var(--radius-media);
  overflow: hidden;
  background: color-mix(in srgb, var(--pr-paper), transparent 88%);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.94) rotate(1.2deg);
  pointer-events: none;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.34);
  transition:
    opacity 0.5s var(--ease),
    transform 0.65s var(--ease);
}

.pr-menu-preview.is-active {
  opacity: 0.82;
  transform: translate(-50%, -50%) scale(1) rotate(-1deg);
}

.pr-menu-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.96) contrast(1.05);
  transform: scale(1.06);
}

.pr-menu-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-row-md) var(--space-row-lg);
  margin-top: auto;
  padding-top: var(--space-row-lg);
  border-top: 1px solid color-mix(in srgb, var(--pr-paper), transparent 82%);
  color: color-mix(in srgb, var(--pr-paper), transparent 30%);
}

.pr-menu-bottom div {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-row-xs) var(--space-row-lg);
}

.pr-menu-directions a[aria-current="page"] {
  color: var(--pr-rocket);
}

.pr-menu-directions a[aria-current="page"]::after {
  right: 0;
}

.pr-menu-bottom a {
  position: relative;
  color: color-mix(in srgb, var(--pr-paper), transparent 22%);
  text-decoration: none;
  transition:
    color 0.42s var(--ease),
    transform 0.42s var(--ease);
}

.pr-menu-bottom a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -3px;
  height: 1.5px;
  border-radius: var(--radius-pill);
  background: var(--pr-rocket);
  transition: right 0.42s var(--ease);
}

.pr-menu-bottom a:hover,
.pr-menu-bottom a:focus-visible {
  color: var(--pr-rocket);
  transform: translateY(-2px);
}

.pr-menu-bottom a:hover::after,
.pr-menu-bottom a:focus-visible::after {
  right: 0;
}

/* ---- Custom cursor (pointer-fine devices only; built in main.js) ----
   Native pointer by default; the native cursor is hidden ONLY over
   interactive elements, where a solid pink circle takes over. */
@media (hover: hover) and (pointer: fine) {
  html.pr-cursor-on a,
  html.pr-cursor-on button,
  html.pr-cursor-on [role="tab"],
  html.pr-cursor-on label,
  html.pr-cursor-on summary,
  html.pr-cursor-on .sc-card,
  html.pr-cursor-on .po-img,
  html.pr-cursor-on [data-menu-toggle] {
    cursor: none;
  }

  /* But keep the native caret where typing happens. */
  html.pr-cursor-on input,
  html.pr-cursor-on textarea,
  html.pr-cursor-on select {
    cursor: auto;
  }

  .pr-cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 200;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-pill);
    background: var(--pr-rocket);
    pointer-events: none;
    opacity: 0;
    will-change: transform;
    transition: opacity 0.26s var(--ease);
  }

  /* Visible only when hovering something clickable. */
  .pr-cursor-ring.is-hover {
    opacity: 1;
  }
}

/* ---- First-visit logo loader (built in main.js initLoader) ---- */
html.pr-loading {
  overflow: hidden;
}

.pr-loader {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: var(--pr-graphite);
  color: var(--pr-paper);
  display: grid;
  place-items: center;
  clip-path: inset(0 0 0 0);
  transition: clip-path 0.8s var(--ease);
}

/* Wipe up to reveal the page. */
.pr-loader.is-done {
  clip-path: inset(0 0 100% 0);
}

.pr-loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-row-sm);
  text-align: center;
  padding: var(--space-card-pad);
}

.pr-loader-label {
  font-size: var(--type-micro);
  font-weight: 700;
  letter-spacing: var(--tracking-kicker);
  text-transform: uppercase;
  opacity: 0.5;
}

.pr-loader-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--type-section);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-display);
}

.pr-loader-bar {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 100%;
  background: var(--pr-rocket);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s linear;
}

/* ---- Site footer ---- */
.pr-footer {
  background: var(--pr-ink);
  color: var(--pr-paper);
  padding: var(--space-section-y-tight) 0;
}

.pr-footer-inner {
  width: var(--shell);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-stack-lg);
}

.pr-footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--type-heading-sm);
  letter-spacing: var(--tracking-heading-soft);
}

.pr-footer-nav {
  display: none;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-row-xs) var(--space-row-lg);
  font-weight: 600;
}

.pr-footer-nav a,
.pr-footer-meta a {
  position: relative;
  color: color-mix(in srgb, var(--pr-paper), transparent 26%);
  transition: color 0.42s var(--ease);
}

.pr-footer-nav a:hover,
.pr-footer-nav a:focus-visible,
.pr-footer-meta a:hover,
.pr-footer-meta a:focus-visible {
  color: var(--pr-lime);
}

.pr-footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--radius-xs);
  text-align: right;
  color: color-mix(in srgb, var(--pr-paper), transparent 40%);
  font-size: var(--type-small);
}

@media (max-width: 760px) {
  .pr-footer-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: var(--space-row-md);
  }

  .pr-footer-meta {
    align-items: center;
    text-align: center;
  }
}

/* ---- Chrome responsive ---- */
@media (max-width: 980px) {
  .pr-header {
    height: 76px;
    grid-template-columns: 1fr auto;
  }

  .pr-menu-preview {
    display: none;
  }
}

@media (max-width: 640px) {
  .pr-menu-panel {
    width: min(100% - 24px, 440px);
    padding-top: var(--header-height);
  }

  .pr-menu-bottom,
  .pr-footer .pr-shell {
    display: flex;
    flex-direction: column;
  }

  .pr-menu-link span {
    font-size: var(--type-section);
  }
}

/* =========================================================
   PAGE TRANSITION — a brand curtain that wipes up to cover on
   navigation, then lifts to reveal the next page. The covering
   state (is-enter) is set by a tiny <head> script before first
   paint, so the new page never flashes before the curtain lifts.
   Driven by initPageTransition() in main.js.
   ========================================================= */
html.pr-nav::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 290;
  background:
    linear-gradient(
      to top,
      var(--page-transition-base) 0%,
      var(--page-transition-base) 91%,
      var(--page-transition-accent) 91%,
      var(--page-transition-accent) 97%,
      var(--page-transition-edge) 97%,
      var(--page-transition-edge) 100%
    );
  pointer-events: none;
  transform: translateY(100%);
  will-change: transform;
}

/* Leaving the current page: slide up from the bottom to cover. */
html.pr-nav.is-cover::after {
  transform: translateY(0);
  transition: transform var(--duration-page-out) var(--ease-page);
}

/* Arriving on the next page: start fully covering (no transition). */
html.pr-nav.is-enter::after {
  transform: translateY(0);
}

/* Arriving: continue up and off the top to reveal the new page. */
html.pr-nav.is-enter.is-reveal::after {
  transform: translateY(-100%);
  transition: transform var(--duration-page-in) var(--ease-page);
}

@media (prefers-reduced-motion: reduce) {
  html.pr-nav::after {
    display: none;
  }
}