/* Shared primary navigation — matches homepage pill nav (index.html).
   Use with body.site-nav-on-light for white page backgrounds (dark frosted pill). */

.site-nav-shell {
  display: contents;
}

.site-nav-shell .nav {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.75rem 2rem;
  box-sizing: border-box;
  flex-wrap: nowrap;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 100px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-nav-shell .nav-toggle {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

body.site-nav-on-light .site-nav-shell .nav {
  background: rgba(18, 20, 26, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.site-nav-shell .nav-logo {
  width: 40px;
  flex-shrink: 0;
  display: block;
  line-height: 0;
}

.site-nav-shell a.nav-logo:hover,
.site-nav-shell a.nav-logo:focus,
.site-nav-shell a.nav-logo:focus-within,
.site-nav-shell a.nav-logo:focus-visible,
.site-nav-shell a.nav-logo:active {
  border: none;
  outline: none;
  background: transparent;
  box-shadow: none;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.site-nav-shell .nav-logo img {
  width: 100%;
  height: auto;
  display: block;
  border: none;
  outline: none;
  box-shadow: none;
  -webkit-tap-highlight-color: transparent;
}

.site-nav-shell .nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.site-nav-shell .nav-link {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  letter-spacing: 0.08em;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition: color 0.3s, box-shadow 0.3s;
}

.site-nav-shell .nav-link:hover {
  color: #fff;
}

/* Scroll conceal (site-nav-scroll.js adds body.site-nav--concealed) */
body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav {
  transform: translate(-50%, calc(-100% - 1.5rem));
  opacity: 0;
  pointer-events: none;
}

body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav-toggle {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

body.site-nav--concealed.site-nav--edge-hover-toggle:not(.site-nav--keyboard-reveal)
  .site-nav-shell
  .nav-toggle {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

body.site-nav--keyboard-reveal .site-nav-shell .nav {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%);
}

body.site-nav--keyboard-reveal .site-nav-shell .nav-toggle {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (min-width: 769px) {
  .site-nav-edge-hover-zone {
    display: none;
    pointer-events: none;
  }

  /* Case study hub: keep edge strip so the case sidebar control can be recalled on hover */
  body.case-study-chrome-page .site-nav-edge-hover-zone {
    display: block;
    pointer-events: auto;
  }
}

/* Right-edge hover strip (invisible); z-index below .case-study-menu-btn (1002) */
.site-nav-edge-hover-zone {
  position: fixed;
  top: 0;
  right: 0;
  width: 48px;
  height: 100vh;
  height: 100dvh;
  z-index: 999;
  background: transparent;
  pointer-events: auto;
}

/* Match homepage metrics: no bolder weight on active (avoids pill width jump) */
.site-nav-shell .nav-link.is-active,
.site-nav-shell .nav-link[aria-current='page'] {
  color: #fff;
  font-weight: 500;
  box-shadow: 0 2px 0 0 rgba(91, 192, 222, 0.9);
}

.site-nav-shell .nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  z-index: 1100;
}

.site-nav-shell .nav-toggle span {
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 999px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-nav-shell .nav-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-nav-shell .nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.site-nav-shell .nav-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav-shell .nav-links-mobile {
  display: none;
}

@media (max-width: 768px) {
  .site-nav-shell {
    display: flex;
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    pointer-events: none;
  }

  .site-nav-shell .nav {
    position: static !important;
    left: auto !important;
    top: auto !important;
    transform: none !important;
    flex: 1;
    min-width: 0;
    margin: 0;
    pointer-events: auto;
    background: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    box-shadow: none !important;
    padding: 1rem 0 1rem 1.5rem;
    width: auto;
    border-radius: 0;
  }

  body.site-nav-on-light .site-nav-shell .nav-toggle span {
    background: #1a1d24;
  }

  .site-nav-shell .nav-toggle {
    display: flex;
    flex-shrink: 0;
    pointer-events: auto;
  }

  .site-nav-shell .nav-links {
      display: none;
  }

  body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav {
    transform: translateY(-100%) !important;
  }

  body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav-toggle {
    transform: translateY(-100%);
  }

  body.site-nav--keyboard-reveal .site-nav-shell .nav {
    transform: none !important;
  }

  body.site-nav--keyboard-reveal .site-nav-shell .nav-toggle {
    transform: none;
  }

  .site-nav-shell .nav-links-mobile {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding-top: 5rem;
    padding-bottom: 2rem;
    padding-inline: 2rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(25px) saturate(1.6);
    -webkit-backdrop-filter: blur(18px);
    z-index: 1099;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  body.site-nav-on-light .site-nav-shell .nav-links-mobile {
    background: rgba(12, 14, 18, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .site-nav-shell .nav-links-mobile.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav-shell .nav-links-mobile .nav-link {
    font-size: 0.9rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav-shell .nav,
  .site-nav-shell .nav-toggle {
    transition: opacity 0.3s ease;
  }

  body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav {
    transform: translateX(-50%);
    opacity: 0;
  }

  body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav-toggle {
    transform: none;
    opacity: 0;
  }

  body.site-nav--concealed.site-nav--edge-hover-toggle:not(.site-nav--keyboard-reveal)
    .site-nav-shell
    .nav-toggle {
    opacity: 1;
  }

  body.site-nav--keyboard-reveal .site-nav-shell .nav {
    transform: translateX(-50%);
    opacity: 1;
  }

  body.site-nav--keyboard-reveal .site-nav-shell .nav-toggle {
    transform: none;
    opacity: 1;
  }

  @media (max-width: 768px) {
    body.site-nav--concealed:not(.site-nav--keyboard-reveal) .site-nav-shell .nav {
      transform: none !important;
      opacity: 0;
    }

    body.site-nav--keyboard-reveal .site-nav-shell .nav {
      transform: none !important;
      opacity: 1;
    }
  }
}