/* ---------------------------------------------------------------------------
   nav-chrome: header, mega menus, mobile menu, scroll rail, DotField.
   Plain CSS on the tokens in css/tokens.css.
   --------------------------------------------------------------------------- */

.nav-root {
  /* The pill sits on the palette's charcoal, one step up on hover. */
  --nav-card-bg: color-mix(in srgb, var(--color-surface) 55%, var(--color-bg));
  --nav-card-bg-hover: var(--color-surface);
  --nav-blur: 24px;
  /* Apple design pass - materials. Saturation keeps colour behind the glass alive instead of
     greying it out; the inset highlight is light catching the top edge of the material. */
  --nav-glass: color-mix(in srgb, var(--color-bg) 62%, transparent);
  --nav-glass-panel: color-mix(in srgb, var(--color-bg) 82%, transparent);
  --nav-glass-filter: blur(var(--nav-blur)) saturate(180%);
  --nav-edge-light: inset 0 0.5px 0 rgb(255 255 255 / 0.1);
  /* Bigger, higher surfaces read thicker: shadow deepens with scroll and when a menu hangs below. */
  --nav-shadow-rest: var(--nav-edge-light), 0 4px 20px rgb(0 0 0 / 0.2);
  --nav-shadow-raised: var(--nav-edge-light), 0 10px 40px rgb(0 0 0 / 0.4);
  --nav-shadow-menu: var(--nav-edge-light), 0 24px 70px rgb(0 0 0 / 0.55);
  --nav-panel-shadow: var(--nav-edge-light), 0 24px 70px rgb(0 0 0 / 0.45);
  /* Labels over glass need more contrast and weight than flat grey (vibrancy). */
  --nav-label: color-mix(in srgb, var(--color-fg) 66%, transparent);
  --nav-secondary: color-mix(in srgb, var(--color-fg) 58%, transparent);
  --nav-press-scale: 0.96;
  --nav-press-ms: 100ms;
  --nav-ring: 0 0 0 2px color-mix(in srgb, var(--color-fg) 30%, transparent);
}

/* --- Header shell ----------------------- */

.nav-root {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding: 12px 12px 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 700ms var(--ease-out);
}

.nav-root[data-revealed='true'] {
  opacity: 1;
  pointer-events: auto;
}

/* :where() keeps the reset at zero specificity so component classes win. */
:where(.nav-root) ul,
:where(.nav-root) p {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-root .accent {
  color: var(--color-accent);
}

.nav-pill {
  margin-inline: auto;
  max-width: var(--shell-width);
  border-radius: var(--radius-nav);
  border: var(--hairline) solid var(--color-border);
  background: var(--nav-glass);
  -webkit-backdrop-filter: var(--nav-glass-filter);
  backdrop-filter: var(--nav-glass-filter);
  overflow: hidden;
  box-shadow: var(--nav-shadow-rest);
  transition: box-shadow 500ms var(--ease-out);
}

.nav-pill[data-shadow='raised'] {
  box-shadow: var(--nav-shadow-raised);
}

.nav-pill[data-shadow='menu'] {
  box-shadow: var(--nav-shadow-menu);
}

.nav-bar {
  display: flex;
  height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 24px; /* only visible in the compact pill, where there is no free space to distribute */
  padding: 0 20px;
}

@media (min-width: 640px) {
  .nav-root {
    padding: 16px 16px 0;
  }
  .nav-bar {
    padding: 0 24px;
  }
}

@media (min-width: 768px) {
  .nav-pill {
    overflow: visible;
  }
}

/* --- Wordmark -------------------- */

.nav-wordmark {
  position: relative;
  display: flex;
  align-items: center;
  border-radius: 2px;
  outline: none;
}

/* Brand mark (tools/make-brand-mark.py). object-fit keeps the non-square source undistorted. */
.nav-wordmark__mark {
  display: block;
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.nav-wordmark__type {
  position: relative;
  display: block;
  margin-left: 10px; /* margin, not flex gap, so the compact morph can animate it to 0 */
}

.nav-wordmark:focus-visible {
  box-shadow: var(--nav-ring);
}

.logo-fusion__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  letter-spacing: -0.02em;
  will-change: transform;
}

/* --- Desktop links ---------------------- */

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links__slot {
  display: inline-block;
  border-radius: var(--radius-md);
  padding: 2px 8px;
}

.nav-trigger,
.nav-plain,
.nav-dropdown__button {
  position: relative;
  padding: 12px 0; /* 44px-tall target inside the 64px bar */
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 500;
  line-height: 1.5;
  text-transform: uppercase;
  letter-spacing: var(--tracking-label-tight);
  color: var(--nav-label);
  transition:
    color 200ms var(--ease-out),
    transform var(--nav-press-ms) var(--ease-out);
}

.nav-trigger,
.nav-dropdown__button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav-plain {
  display: inline-block;
}

/* A short label like "home" is only ~39px wide. Touch needs the full 44px
   target; a mouse does not, so the desktop rhythm is left alone. */
@media (pointer: coarse) {
  .nav-plain,
  .nav-dropdown__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
  }
}

.nav-trigger:hover,
.nav-plain:hover,
.nav-dropdown__button:hover,
.nav-trigger[aria-expanded='true'],
.nav-dropdown__button[aria-expanded='true'] {
  color: var(--color-fg);
}

.nav-trigger__caret {
  font-size: 8px;
  line-height: 1;
  transition: transform 300ms var(--ease-out);
}

.nav-trigger[aria-expanded='true'] .nav-trigger__caret {
  transform: rotate(180deg);
}

/* Tiny tag riding a nav label, e.g. TOOLS^free. The dropdown button is a flex
   row, so `sup`'s own raise does nothing there - align-self puts it back on the
   cap line. The accent is lifted so it reads on dark glass. */
.nav-trigger__sup {
  align-self: flex-start;
  margin-left: 3px;
  font-family: var(--font-mono);
  font-size: 7px;
  line-height: 1;
  color: var(--color-accent-on-dark);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}



.nav-plain__underline {
  position: absolute;
  inset: auto 0 8px 0;
  height: var(--hairline);
  background: var(--color-fg);
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 250ms var(--ease-out);
}

.nav-plain:hover .nav-plain__underline {
  transform: scaleX(1);
  transform-origin: left;
}

/* --- "more" dropdown ----------------------- */

.nav-dropdown {
  position: relative;
}

.nav-dropdown__button {
  padding: 6px 8px;
}

.nav-dropdown__arrow {
  display: inline-block;
  font-size: 8px;
  line-height: 1;
}

.nav-dropdown__panel {
  position: absolute;
  left: 0;
  top: 100%;
  min-width: 210px;
  border-radius: var(--radius-xl);
  border: var(--hairline) solid var(--color-border);
  background: var(--nav-glass-panel);
  padding: 8px;
  box-shadow: var(--nav-panel-shadow);
  -webkit-backdrop-filter: var(--nav-glass-filter);
  backdrop-filter: var(--nav-glass-filter);
  visibility: hidden;
  pointer-events: none;
}

.nav-dropdown__panel[data-open='true'] {
  pointer-events: auto;
}

.nav-dropdown__list {
  display: flex;
  flex-direction: column;
}

.nav-dropdown__link {
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label-tight);
  color: color-mix(in srgb, var(--color-fg) 70%, transparent);
  transition: color 200ms var(--ease-out), background-color 200ms var(--ease-out);
  /* The panel is shrink-to-fit, so a wrapping label makes it narrow instead of
     making it wide. Adding the AI badge to the longest row was enough to break
     "COVER LETTER GENERATOR" across two lines; this keeps each entry on one
     line and lets the panel widen to the longest one. */
  white-space: nowrap;
}

.nav-dropdown__link:hover {
  background: color-mix(in srgb, var(--color-fg) 5%, transparent);
  color: var(--color-fg);
}

/* --- Right actions: search, message us, burger ---------------------------- */

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-cta {
  display: none;
  border-radius: 9999px;
}

@media (min-width: 640px) {
  .nav-cta {
    display: inline-flex;
  }
}

/* ButtonLink secondary / pill */
.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: -0.025em;
  white-space: nowrap;
  outline: none;
  transition-property: background-color, border-color, color, transform;
  transition-duration: 250ms, 250ms, 250ms, 140ms;
  transition-timing-function: var(--ease-out);
}

.btn:hover {
  transform: scale(1.02);
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible {
  box-shadow: 0 0 0 2px var(--color-bg), 0 0 0 4px color-mix(in srgb, var(--color-fg) 30%, transparent);
}

.btn--sm {
  height: 36px;
  padding: 0 16px;
  font-size: 12px;
}

.btn--md {
  height: 44px;
  padding: 0 20px;
  font-size: 13px;
}

.btn--pill {
  border-radius: 9999px;
}

.btn--block {
  width: 100%;
}

.btn--secondary {
  border: var(--hairline) solid var(--color-border-strong);
  color: var(--color-fg);
}

/* Label flips to the bg colour so it reads on the white flair blob. */
.btn--secondary:hover {
  border-color: color-mix(in srgb, var(--color-fg) 30%, transparent);
  color: var(--color-bg);
}

.btn__flair {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 0;
  border-radius: 9999px;
  background: var(--color-fg);
  pointer-events: none;
  transform: scale(0);
  will-change: transform;
}

.btn__label {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* the chat bubble takes the accent. */
.btn__icon {
  color: var(--color-accent);
}

.nav-burger {
  position: relative;
  display: flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  outline: none;
}

.nav-burger:focus-visible {
  box-shadow: var(--nav-ring);
}

@media (min-width: 768px) {
  .nav-burger {
    display: none;
  }
}

.nav-burger__line {
  position: absolute;
  width: 20px;
  height: 1px;
  background: var(--color-fg);
  transition: transform 300ms var(--ease-out);
}

.nav-burger__line--top {
  transform: translateY(-6px);
}

.nav-burger__line--mid {
  transition: opacity 200ms var(--ease-out);
}

.nav-burger__line--bottom {
  transform: translateY(6px);
}

.nav-burger[aria-expanded='true'] .nav-burger__line--top {
  transform: translateY(0) rotate(45deg);
}

.nav-burger[aria-expanded='true'] .nav-burger__line--mid {
  opacity: 0;
}

.nav-burger[aria-expanded='true'] .nav-burger__line--bottom {
  transform: translateY(0) rotate(-45deg);
}

/* --- Mega panels ------------------------------- */

.mega {
  position: absolute;
  left: 50%;
  top: calc(100% + 0.5rem);
  z-index: 10;
  width: calc(100% - 1.5rem);
  max-width: var(--shell-width);
  /* Separate `translate` so GSAP's transform composes with the centring (see nav-chrome.md 3b). */
  translate: -50% 0;
  visibility: hidden;
  opacity: 0;
  overflow: hidden;
  border-radius: 22px;
  border: var(--hairline) solid var(--color-border);
  background: var(--nav-glass-panel);
  box-shadow: var(--nav-panel-shadow);
  -webkit-backdrop-filter: var(--nav-glass-filter);
  backdrop-filter: var(--nav-glass-filter);
  will-change: transform, opacity;
  pointer-events: none;
}

.mega[data-open='true'] {
  pointer-events: auto;
}

.mega--tools {
  max-width: 860px;
}

.mega__inner {
  margin-inline: auto;
  max-width: var(--shell-width);
  padding: 32px 24px;
}

.mega__inner--work {
  padding-top: 40px;
}

.mega__inner--tools {
  max-width: 860px;
  padding: 28px 24px;
}

.mega__head {
  margin-bottom: 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.mega__eyebrow,
.mega__group-title,
.mega__legend,
.mega__side-title,
.mobile-nav__eyebrow,
.mobile-nav__section-title {
  font-family: var(--font-mono);
  font-size: var(--text-label-s);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label);
  color: var(--color-fg-muted);
}

.nav-root .mega__eyebrow--work {
  margin-bottom: 24px;
}

.nav-root .mega__eyebrow--tools {
  margin-bottom: 16px;
}

.nav-root .mega__group-title {
  margin-bottom: 12px;
}

.mega__all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label-tight);
  color: var(--color-accent);
  transition: opacity 200ms var(--ease-out);
}

.mega__all:hover {
  opacity: 0.7;
}

.mega__all--side {
  margin-top: 16px;
}

.mega__groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px 24px;
}

@media (min-width: 640px) {
  .mega__groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .mega__groups {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.mega__cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mega-card {
  display: flex;
  align-items: stretch;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: var(--hairline) solid var(--color-border);
  background: var(--nav-card-bg);
  transition: background-color 300ms var(--ease-out), border-color 300ms var(--ease-out);
}

.mega-card:hover {
  background: var(--nav-card-bg-hover);
  border-color: var(--color-border-strong);
}

.mega-card__text {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  padding: 16px;
}

.mega-card__name,
.tool-card__name {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-label-l);
  color: var(--color-fg);
  transition: color 200ms var(--ease-out);
}

.mega-card:hover .mega-card__name,
.tool-card:hover .tool-card__name {
  color: var(--color-accent);
}

.nav-root .mega-card__tagline,
.nav-root .tool-card__tagline {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  line-height: 1.625;
  color: var(--nav-secondary);
}

.mega-card__tagline {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.mega-card__star {
  margin-left: 6px;
  font-size: 10px;
  line-height: 1;
}

.mega__foot {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: var(--hairline) solid var(--color-border);
  padding-top: 16px;
}

.mega__legend {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mega__legend-star {
  font-size: 11px;
  line-height: 1;
}

.mega__note {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  line-height: 1.625;
  color: var(--nav-secondary);
}

/* Work mega */
.mega__industries {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px 32px;
}

@media (min-width: 768px) {
  .mega__industries {
    grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(220px, 260px);
  }
}

.mega__industry-list {
  margin-inline: -12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mega__industry {
  display: flex;
  align-items: center;
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: var(--text-label-l);
  color: color-mix(in srgb, var(--color-fg) 70%, transparent);
  transition: color 200ms var(--ease-out), background-color 200ms var(--ease-out);
}

.mega__industry:hover {
  background: color-mix(in srgb, var(--color-fg) 5%, transparent);
  color: var(--color-fg);
}

.mega__side {
  border-radius: var(--radius-xl);
  border: var(--hairline) solid var(--color-border);
  background: rgb(255 255 255 / 0.02);
  padding: 20px;
}

.nav-root .mega__side-title {
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.mega__side-dot {
  width: 6px;
  height: 6px;
  border-radius: 9999px;
  background: var(--color-accent);
}

.mega__side-blurb {
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  line-height: 1.625;
  color: var(--nav-secondary);
}

/* Tools mega */
.mega__tools {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .mega__tools {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.tool-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: var(--hairline) solid var(--color-border);
  background: var(--nav-card-bg);
  transition: background-color 300ms var(--ease-out), border-color 300ms var(--ease-out);
}

.tool-card:hover {
  border-color: var(--color-border-strong);
  background: var(--nav-card-bg-hover);
}

.tool-card__text {
  display: flex;
  flex-direction: column;
  padding: 16px;
}

/* .arrow-swap */
.arrow-swap {
  position: relative;
  display: inline-flex;
  width: 1.1em;
  overflow: hidden;
}

.arrow-swap > span {
  display: inline-block;
  transition: transform 0.2s var(--ease-out);
}

.arrow-swap > span + span {
  position: absolute;
  left: 0;
  transform: translate(-130%);
}

@media (hover: hover) and (pointer: fine) {
  a:hover .arrow-swap > span:first-child,
  button:hover .arrow-swap > span:first-child {
    transform: translate(130%);
  }
  a:hover .arrow-swap > span + span,
  button:hover .arrow-swap > span + span {
    transform: translate(0);
  }
}

/* .ai-star - pink glow swapped for the accent */
.ai-star {
  display: inline-block;
  color: var(--color-accent);
  transform-origin: 50%;
  will-change: transform, filter;
  animation: ai-star-twinkle 6s ease-in-out infinite;
}

@keyframes ai-star-twinkle {
  0%,
  to {
    opacity: 0.85;
    color: var(--color-accent);
    filter: drop-shadow(0 0 3px color-mix(in srgb, var(--color-accent) 55%, transparent))
      drop-shadow(0 0 8px color-mix(in srgb, var(--color-accent) 40%, transparent));
    transform: scale(0.95);
  }
  50% {
    opacity: 1;
    /* lighten the accent the same way. */
    color: color-mix(in srgb, var(--color-accent) 55%, white);
    filter: drop-shadow(0 0 3px color-mix(in srgb, var(--color-accent) 30%, rgb(255 255 255 / 0.55)))
      drop-shadow(0 0 11px var(--color-accent))
      drop-shadow(0 0 22px color-mix(in srgb, var(--color-accent) 85%, transparent));
    transform: scale(1.18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ai-star {
    animation: none;
  }
}

/* --- Mobile menu ------------------------- */

.mobile-nav {
  overflow: hidden;
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none;
  }
}

.mobile-nav__list {
  display: flex;
  max-height: 78vh;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top: var(--hairline) solid var(--color-border);
  padding: 12px 16px 16px;
}

@media (min-width: 640px) {
  .mobile-nav__list {
    padding-inline: 24px;
  }
}

.mobile-nav__toggle,
.mobile-nav__link {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius-md);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: var(--text-label-l);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label-tight);
  color: color-mix(in srgb, var(--color-fg) 70%, transparent);
  transition: color 200ms var(--ease-out), background-color 200ms var(--ease-out);
}

.mobile-nav__toggle:hover,
.mobile-nav__link:hover,
.mobile-nav__item:hover {
  background: color-mix(in srgb, var(--color-fg) 4%, transparent);
  color: var(--color-fg);
}

.mobile-nav__caret {
  font-size: 9px;
  line-height: 1;
  transition: transform 300ms var(--ease-out);
}

.mobile-nav__toggle[aria-expanded='true'] .mobile-nav__caret {
  transform: rotate(180deg);
}

/* Accordions are CSS max-height in the reference, not GSAP. */
.mobile-nav__body {
  overflow: hidden;
  max-height: 0;
  transition: max-height 500ms var(--ease-out);
}

.mobile-nav__body--services[data-open='true'] {
  max-height: 1400px;
}

.mobile-nav__body--work[data-open='true'] {
  max-height: 900px;
}

.mobile-nav__groups {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 12px;
}

.mobile-nav__industries {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
}

.nav-root .mobile-nav__eyebrow {
  margin-bottom: 8px;
}

.nav-root .mobile-nav__eyebrow--flush {
  margin-bottom: 0;
}

.mobile-nav__sublist {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-nav__industry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 16px;
}

.mobile-nav__sublink {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-label-l);
  color: color-mix(in srgb, var(--color-fg) 70%, transparent);
  transition: color 200ms var(--ease-out);
}

.mobile-nav__sublink:hover {
  color: var(--color-fg);
}

.mobile-nav__legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: var(--hairline) solid var(--color-border);
  padding-top: 12px;
}

.mobile-nav__all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-label-l);
  font-weight: 500;
  color: var(--color-fg);
  transition: color 200ms var(--ease-out);
}

.mobile-nav__all:hover {
  color: var(--color-accent);
}

.mobile-nav__all--ruled {
  margin-top: 4px;
  border-top: var(--hairline) solid var(--color-border);
  padding-top: 12px;
}

.mobile-nav__section {
  margin-top: 4px;
  border-top: var(--hairline) solid var(--color-border);
  padding-top: 8px;
}

.nav-root .mobile-nav__section-title {
  padding: 8px 12px 4px;
}

.mobile-nav__stack {
  display: flex;
  flex-direction: column;
}

.mobile-nav__item {
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-md);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: var(--text-label-l);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label-tight);
  color: color-mix(in srgb, var(--color-fg) 70%, transparent);
  transition: color 200ms var(--ease-out), background-color 200ms var(--ease-out);
}

.mobile-nav__cta {
  margin-top: 8px;
  padding-inline: 4px;
}

@media (min-width: 640px) {
  .mobile-nav__cta {
    display: none;
  }
}

/* --- Scroll rail --------------------------- */

.scroll-rail {
  position: fixed;
  right: 24px;
  top: 50%;
  z-index: 30;
  translate: 0 -50%;
  display: none;
  align-items: center;
  gap: 12px;
  pointer-events: none;
  mix-blend-mode: difference;
}

@media (min-width: 768px) {
  .scroll-rail {
    display: flex;
  }
}

.scroll-rail[data-complete='true'] {
  mix-blend-mode: normal;
}

.scroll-rail__track {
  position: relative;
  width: 1px;
  height: 64px;
  background: rgb(255 255 255 / 0.2);
}

.scroll-rail[data-complete='true'] .scroll-rail__track {
  background: color-mix(in srgb, var(--color-accent) 20%, transparent);
}

.scroll-rail__thumb {
  position: absolute;
  left: 50%;
  top: 0;
  display: block;
  width: 1px;
  height: 8px;
  translate: -50% 0;
  background: rgb(255 255 255);
  will-change: transform;
  transition: background-color 420ms var(--ease-out);
}

.scroll-rail[data-complete='true'] .scroll-rail__thumb {
  background: var(--color-accent);
}

.scroll-rail__label {
  font-family: var(--font-mono);
  font-size: var(--text-label-s);
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--tracking-label-tight);
  color: rgb(255 255 255 / 0.6);
  transition: color 420ms var(--ease-out);
}

.scroll-rail[data-complete='true'] .scroll-rail__label {
  color: var(--color-accent);
}

/* --- Compact pill on scroll (js/engines/ --------------------
   CSS owns both layouts; the engine only animates between them. */

.nav-root[data-compact='true'] .nav-pill {
  width: fit-content;
}

.nav-root[data-compact='true'] .nav-bar {
  height: 52px;
  padding: 0 10px 0 14px;
}

.nav-root[data-compact='true'] .nav-wordmark__type {
  width: 0;
  margin-left: 0;
  opacity: 0;
  overflow: hidden;
}

.nav-wordmark {
  transition: transform var(--nav-press-ms) var(--ease-out);
}

.nav-trigger:focus-visible,
.nav-plain:focus-visible,
.nav-dropdown__button:focus-visible {
  outline: none;
  border-radius: var(--radius-md);
  box-shadow: var(--nav-ring);
}

/* Reduced transparency: frosted glass becomes a solid surface. */
@media (prefers-reduced-transparency: reduce) {
  .nav-root {
    --nav-glass: var(--color-bg);
    --nav-glass-panel: var(--color-bg);
    --nav-glass-filter: none;
  }
}

/* Increased contrast: near-solid surfaces, a defined border, full-strength labels. */
@media (prefers-contrast: more) {
  .nav-root {
    --nav-glass: var(--color-bg);
    --nav-glass-panel: var(--color-bg);
    --nav-label: var(--color-fg);
    --nav-secondary: color-mix(in srgb, var(--color-fg) 85%, transparent);
  }

  .nav-pill,
  .nav-dropdown__panel,
  .mega {
    border-color: var(--color-border-strong);
  }
}

/* --- DotField ------------------------------ */

.dot-field {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

.dot-field canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Child links inside the mobile menu (a nav item with `children` in content/site.json) */
.mobile-nav__link--child {
  padding-left: 28px;
  font-size: var(--text-label);
  color: color-mix(in srgb, var(--color-fg) 62%, transparent);
}

/* --- "AI" marker on a tools entry -------- */
/* Filled from tools.json, so a tool that behaves differently from the rest of
   the set carries the same marker in the nav that it carries on its card. It is
   not decoration: it is what tells someone this tool sends their text to a
   server before they open it.

   Outline rather than a solid fill. The dropdown's own labels are already muted
   uppercase mono, and a filled accent chip beside them reads as the primary
   element in the row - the tool's NAME has to stay that. */
.nav-dd__badge {
  flex: none;
  border: 1px solid color-mix(in srgb, var(--color-accent-on-dark) 70%, transparent);
  border-radius: 999px;
  /* Its own size, not the label's: these labels are already at --text-label, and
     an em-relative badge on top of that disappears. */
  padding: 2px 6px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--color-accent-on-dark);
}

/* The desktop row is flex with a gap, so the badge needs no margin there. The
   mobile child link is a plain block, so it does. */
.mobile-nav__link--child .nav-dd__badge {
  display: inline-block;
  margin-left: 8px;
  vertical-align: 0.1em;
}

/* --- Visitor pill ------------------------ */
/* Bottom-right page chrome, part of the nav partial. Hidden until the count
   lands, so a blocked or down counter leaves nothing behind.

   It builds its surface from the GLOBAL tokens, never from the --nav-* ones:
   those are scoped to .nav-root and this element is a sibling of the header,
   so var(--nav-glass) here resolves to nothing - an invisible pill with
   inherited light text, which only looks correct by accident over a dark
   section. The page scrolls through cream sections (kape-tools, method-rail),
   so the surface stays near-opaque dark and legible over both. */

.visitor-count {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: var(--hairline) solid color-mix(in srgb, var(--color-fg) 14%, transparent);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  padding: 8px 14px;
  box-shadow:
    inset 0 0.5px 0 rgb(255 255 255 / 0.08),
    0 8px 24px rgb(0 0 0 / 0.35);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  font-family: var(--font-mono);
  font-size: var(--text-label-s);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-fg-secondary);
  opacity: 0;
  translate: 0 8px;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 600ms var(--ease-out),
    translate 600ms var(--ease-out);
}

.visitor-count[data-ready='true'] {
  opacity: 1;
  translate: 0 0;
  visibility: visible;
}

/* Soft pulse: this is a live number, and the dot is the only thing saying so. */
.visitor-count__dot {
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--color-brand-green);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand-green) 18%, transparent);
}

.visitor-count__value {
  font-weight: 600;
  color: var(--color-fg);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 767px) {
  .visitor-count {
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    padding: 7px 12px;
  }
}

/* Scrolling down a phone tucks it away (js/engines/visitor-count.js); it comes
   back when the reader stops or scrolls up. It is never a tap target, so
   pointer-events stay off and nothing under it is ever blocked. */
.visitor-count[data-tucked='true'] {
  opacity: 0;
  translate: 0 12px;
}

@media (prefers-reduced-motion: reduce) {
  .visitor-count {
    transition: none;
    translate: none;
  }
}

/* --- Mobile menu: a sheet, not a pill ----------------------------------------
   The bar is compact at phone width, and `[data-compact] .nav-pill` hugs its
   content - which trapped the whole open menu inside a 232px column on a 390px
   screen, with the page reading through it. An open menu is a modal task, so it
   takes the full bar width, dims what is behind it, and thickens its material.
   Apple: anchor the surface to its trigger, dim to focus, keep text legible.
   --------------------------------------------------------------------------- */

@media (max-width: 767px) {
  /* Open = `data-shadow="menu"`; nav.js sets that shadow only for this menu. */
  .nav-root[data-compact='true'] .nav-pill[data-shadow='menu'],
  .nav-root .nav-pill[data-shadow='menu'] {
    width: 100%;
  }

  /* The sheet has to sit above its own scrim. Safe here: the mega panels that
     position against the pill are desktop-only. */
  .nav-root .nav-pill {
    position: relative;
    z-index: 1;
  }

  /* Dim to focus. pointer-events stays none so a tap outside still reaches the
     page and closes the menu through the existing outside-click handler. */
  .nav-root::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    background: color-mix(in srgb, var(--color-bg) 68%, transparent);
    opacity: 0;
    pointer-events: none;
    transition: opacity 320ms var(--ease-out);
  }

  .nav-root:has(.nav-pill[data-shadow='menu'])::before {
    opacity: 1;
  }

  /* A menu laid over page text needs a thicker material than the resting bar. */
  .nav-pill[data-shadow='menu'] {
    background: color-mix(in srgb, var(--color-bg) 94%, transparent);
  }

  /* The list scrolls past 78vh, so the pill's overflow cut the last row flat.
     Fade the cut edge into the padding and keep the home indicator clear. */
  .mobile-nav__list {
    /* 78vh left the socials row cut on a 844px phone with room to spare below the
       sheet. Measure from the bar instead: 12px gutter + 64px bar + 52px breathing. */
    max-height: calc(100dvh - 128px);
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
    mask-image: linear-gradient(to bottom, #000 calc(100% - 24px), transparent 100%);
  }
}

/* `tools` carries a "free" sup. space-between threw it to the far right of the
   row, reading as a stray label; only the accordion toggles need a split row. */
.mobile-nav__link {
  justify-content: flex-start;
  gap: 8px;
}

.mobile-nav__link .nav-trigger__sup {
  align-self: center;
  vertical-align: baseline;
}

@media (prefers-reduced-transparency: reduce) {
  .nav-pill[data-shadow='menu'] {
    background: var(--color-bg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-root::before {
    transition: none;
  }
}