/* Shared navigation glass for index.html and case-study pages. */

html.portfolio-nav-shared .topnav-inner {
  --glass-panel: rgba(255, 255, 255, 0.12);
  --glass-rim-light: rgba(255, 255, 255, 0.78);
  --glass-rim-mid: rgba(255, 255, 255, 0.16);
  --glass-rim-dark: rgba(53, 71, 92, 0.2);
  --glass-contact: rgba(7, 7, 7, 0.12);
  --glass-menu-fill: rgba(247, 249, 252, 0.48);
  --glass-menu-text: rgba(10, 14, 20, 0.92);
  --glass-menu-muted: rgba(10, 14, 20, 0.5);
  --glass-menu-rim-start: rgba(255, 255, 255, 0.96);
  --glass-menu-rim-mid: rgba(128, 145, 166, 0.14);
  --glass-menu-rim-end: rgba(52, 68, 88, 0.24);
  background: rgba(255, 255, 255, 0.14);
  -webkit-backdrop-filter: blur(8px) saturate(1.08);
  backdrop-filter: blur(8px) saturate(1.08);
  justify-content: center;
  width: max-content;
  max-width: calc(100vw - var(--gutter) - var(--gutter));
}

html.portfolio-nav-shared .nav-reveal-handle {
  position: absolute;
  top: 1px;
  left: 50%;
  z-index: 2;
  width: 52px;
  height: 18px;
  margin-left: -26px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  pointer-events: auto;
  opacity: 0;
  visibility: hidden;
}

html.portfolio-nav-shared .nav-reveal-bar {
  position: absolute;
  top: 5px;
  left: 50%;
  width: 28px;
  height: 4px;
  margin-left: -14px;
  border-radius: var(--radius-pill);
  background: rgba(86, 91, 99, 0.66);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.38),
    0 1px 4px rgba(7, 7, 7, 0.14);
}

html.portfolio-nav-shared .topnav.on-dark .nav-reveal-bar {
  background: rgba(225, 228, 234, 0.58);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    0 1px 5px rgba(0, 0, 0, 0.38);
}

html.portfolio-nav-shared .nav-reveal-handle:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 1px;
  border-radius: var(--radius-pill);
}

html.portfolio-nav-shared .topnav.on-dark .topnav-inner {
  --glass-panel: rgba(12, 15, 20, 0.14);
  --glass-rim-light: rgba(255, 255, 255, 0.4);
  --glass-rim-mid: rgba(255, 255, 255, 0.08);
  --glass-rim-dark: rgba(0, 0, 0, 0.42);
  --glass-contact: rgba(0, 0, 0, 0.3);
  --glass-menu-fill: rgba(8, 10, 14, 0.5);
  --glass-menu-text: rgba(255, 255, 255, 0.94);
  --glass-menu-muted: rgba(255, 255, 255, 0.56);
  --glass-menu-rim-start: rgba(255, 255, 255, 0.68);
  --glass-menu-rim-mid: rgba(255, 255, 255, 0.12);
  --glass-menu-rim-end: rgba(0, 0, 0, 0.48);
  background: rgba(12, 15, 20, 0.16);
}

html.portfolio-nav-refract .topnav-inner {
  background: rgba(255, 255, 255, 0.065);
}

html.portfolio-nav-refract .topnav.on-dark .topnav-inner {
  background: rgba(12, 15, 20, 0.08);
}

html.portfolio-nav-shared .nav-glass-lens {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.035)),
    var(--lens-fill);
  box-shadow:
    inset 0 1px 0 var(--glass-rim-light),
    inset 1px 0 0 rgba(255, 255, 255, 0.24),
    inset 0 -1px 0 var(--glass-rim-dark),
    0 1px 2px var(--glass-contact),
    0 5px 12px -4px rgba(7, 7, 7, 0.14);
}

html.portfolio-nav-shared .nav-dropdown {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  z-index: 60;
  min-width: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  box-shadow: none;
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%);
  transition: none;
  pointer-events: none;
}

html.portfolio-nav-shared .nav-dropdown::before {
  top: -18px;
  height: 18px;
}

html.portfolio-nav-shared .nav-dropdown-panel {
  position: relative;
  isolation: isolate;
  contain: layout paint;
  width: max-content;
  min-width: 236px;
  max-width: calc(100vw - 32px);
  padding: 4px;
  border-radius: var(--radius-md);
  overflow: hidden;
  color: var(--glass-menu-text);
  box-shadow:
    0 1px 2px rgba(20, 32, 48, 0.08),
    0 3px 8px -2px rgba(20, 32, 48, 0.14),
    0 18px 38px -18px rgba(20, 32, 48, 0.24);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  pointer-events: none;
  will-change: opacity, transform;
}

html.portfolio-nav-shared .nav-has-drop:hover .nav-dropdown-panel,
html.portfolio-nav-shared .nav-has-drop:focus-within .nav-dropdown-panel {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
}

html.portfolio-nav-shared .nav-has-drop.drop-open .nav-dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

html.portfolio-nav-shared .nav-has-drop.drop-open .nav-dropdown {
  pointer-events: auto;
}

html.portfolio-nav-motion .nav-dropdown-panel,
html.portfolio-nav-motion .nav-has-drop:hover .nav-dropdown-panel,
html.portfolio-nav-motion .nav-has-drop:focus-within .nav-dropdown-panel,
html.portfolio-nav-motion .nav-has-drop.drop-open .nav-dropdown-panel {
  transition: none;
}

html.portfolio-nav-shared .nav-dropdown-surface {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  border-radius: inherit;
  isolation: isolate;
  contain: paint;
  background: var(--glass-menu-fill);
  -webkit-backdrop-filter: blur(2px) saturate(1.08);
  backdrop-filter: blur(2px) saturate(1.08);
  pointer-events: none;
}

html.portfolio-nav-refract .nav-dropdown-surface {
  background: var(--glass-menu-fill);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

html.portfolio-nav-refract .topnav.on-dark .nav-dropdown-surface {
  background: var(--glass-menu-fill);
}

html.portfolio-nav-shared .nav-dropdown-surface::after {
  content: none;
  display: none;
}

html.portfolio-nav-shared .nav-dropdown-surface::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  box-shadow:
    inset 0 1px 0 var(--glass-menu-rim-start),
    inset 1px 0 0 var(--glass-menu-rim-mid),
    inset 0 -1px 0 var(--glass-menu-rim-end),
    inset -1px 0 0 var(--glass-menu-rim-mid);
  pointer-events: none;
}

html.portfolio-nav-refract .nav-dropdown-surface::before {
  display: block;
}

html.portfolio-nav-shared .nav-dropdown-refraction {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  border-radius: inherit;
  background: transparent;
  pointer-events: none;
  -webkit-mask-image:
    linear-gradient(#000 0 0),
    linear-gradient(#000 0 0),
    linear-gradient(#000 0 0),
    linear-gradient(#000 0 0);
  -webkit-mask-position: top center, bottom center, center left, center right;
  -webkit-mask-size:
    calc(100% - 104px) 32px,
    calc(100% - 104px) 32px,
    32px calc(100% - 104px),
    32px calc(100% - 104px);
  -webkit-mask-repeat: no-repeat;
  mask-image:
    linear-gradient(#000 0 0),
    linear-gradient(#000 0 0),
    linear-gradient(#000 0 0),
    linear-gradient(#000 0 0);
  mask-position: top center, bottom center, center left, center right;
  mask-size:
    calc(100% - 104px) 32px,
    calc(100% - 104px) 32px,
    32px calc(100% - 104px),
    32px calc(100% - 104px);
  mask-repeat: no-repeat;
}

html.portfolio-nav-shared .nav-dropdown-row-lens {
  position: absolute;
  left: 6px;
  top: 0;
  z-index: 2;
  width: calc(100% - 12px);
  height: 44px;
  border-radius: 14px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.12)),
    rgba(128, 145, 166, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    inset 0 -1px 0 rgba(52, 68, 88, 0.14),
    0 1px 2px rgba(20, 32, 48, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  will-change: transform, height, opacity;
}

html.portfolio-nav-shared .nav-drop-link {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: baseline;
  align-content: center;
  gap: 1px 10px;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 14px;
  color: inherit;
  background: transparent;
  backface-visibility: hidden;
}

html.portfolio-nav-shared .nav-drop-link:hover,
html.portfolio-nav-shared .nav-drop-link:focus-visible {
  background: transparent;
}

html.portfolio-nav-shared .nav-drop-link:focus-visible {
  outline: 2px solid rgba(10, 14, 20, 0.55);
  outline-offset: -2px;
}

html.portfolio-nav-shared .topnav.on-dark .nav-drop-link:focus-visible {
  outline-color: rgba(255, 255, 255, 0.62);
}

html.portfolio-nav-shared .nav-drop-link .meta,
html.portfolio-nav-shared .nav-drop-link .ndl-note {
  color: var(--glass-menu-muted);
}

html.portfolio-nav-shared .nav-drop-link .ndl-note.ndl-here {
  color: var(--glass-menu-text);
}

html.portfolio-nav-shared .topnav.on-dark .nav-dropdown,
html.portfolio-nav-shared .topnav.on-dark .nav-dropdown-panel {
  color: var(--glass-menu-text);
}

html.portfolio-nav-shared .topnav.on-dark .nav-dropdown-row-lens {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.03)),
    rgba(255, 255, 255, 0.08);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.32),
    inset 0 -1px 0 rgba(0, 0, 0, 0.34),
    0 1px 2px rgba(0, 0, 0, 0.24);
}

@media (max-width: 760px) {
  html.portfolio-nav-shared .topnav { padding-top: 10px; }
  html.portfolio-nav-shared .topnav-inner { padding: 8px 14px; gap: 12px; }
}

@media (max-width: 640px) {
  html.portfolio-nav-shared .nav-dropdown {
    left: 0;
    transform: none;
  }

  html.portfolio-nav-shared .nav-dropdown-panel { min-width: 210px; }
}

@media (prefers-reduced-transparency: reduce) {
  html.portfolio-nav-shared .topnav-inner,
  html.portfolio-nav-shared .topnav.on-dark .topnav-inner {
    background: var(--paper);
    color: var(--ink);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  html.portfolio-nav-shared .topnav.on-dark .topnav-inner {
    background: var(--ink);
    color: var(--paper);
  }

  html.portfolio-nav-shared .nav-dropdown-surface {
    background: rgba(247, 249, 252, 0.98);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  html.portfolio-nav-shared .topnav.on-dark .nav-dropdown-surface {
    background: rgba(8, 10, 14, 0.98);
  }

  html.portfolio-nav-shared .nav-dropdown-panel {
    color: var(--ink);
  }

  html.portfolio-nav-shared .topnav.on-dark .nav-dropdown-panel {
    color: var(--paper);
  }

  html.portfolio-nav-shared .nav-dropdown-surface::before {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html.portfolio-nav-shared .nav-dropdown-panel,
  html.portfolio-nav-shared .nav-glass-lens,
  html.portfolio-nav-shared .nav-dropdown-row-lens {
    transition: none;
  }
}