/* One navigation system for both the home and every case study. */
.glass-nav {
  --nav-acid: #c9ff45;
  --nav-ui: #426500;
  position: fixed;
  top: 14px;
  left: 14px;
  right: 14px;
  z-index: 200;
  height: 66px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 18px;
  border: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  border-radius: 999px;
  isolation: isolate;
  background: transparent;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .32),
    inset 0 -1px 0 color-mix(in srgb, var(--ink) 8%, transparent),
    0 12px 42px rgba(0, 0, 0, .11);
  transform: translateZ(0);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.glass-nav::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  clip-path: inset(0 round 999px);
  background:
    linear-gradient(118deg,
      rgba(255, 255, 255, .28) 0%,
      rgba(255, 255, 255, .08) 24%,
      transparent 45%,
      color-mix(in srgb, var(--nav-acid) 7%, transparent) 76%,
      rgba(255, 255, 255, .13) 100%),
    color-mix(in srgb, var(--bg) 42%, transparent);
  -webkit-backdrop-filter: blur(30px) saturate(1.7) contrast(1.06);
  backdrop-filter: blur(30px) saturate(1.7) contrast(1.06);
  transition: background .3s var(--ease);
}

.glass-nav::after {
  content: '';
  position: absolute;
  inset: 1px;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(105deg,
      rgba(255, 255, 255, .24),
      transparent 18%,
      transparent 72%,
      rgba(255, 255, 255, .1));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .3),
    inset 0 -1px 0 color-mix(in srgb, var(--ink) 7%, transparent);
  opacity: .72;
}

.glass-nav > * { position: relative; z-index: 1; }

.glass-nav.is-scrolled::before,
.glass-nav.scrolled::before {
  background:
    linear-gradient(118deg,
      rgba(255, 255, 255, .24) 0%,
      rgba(255, 255, 255, .06) 24%,
      transparent 45%,
      color-mix(in srgb, var(--nav-acid) 6%, transparent) 76%,
      rgba(255, 255, 255, .11) 100%),
    color-mix(in srgb, var(--bg) 56%, transparent);
}

.glass-nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  color: var(--ink);
}

.glass-nav .brand-symbol {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(16, 21, 18, .65);
  border-radius: 50%;
  color: #101512;
  background: var(--nav-acid);
  line-height: 1;
  transform: none;
  box-shadow: none;
  transition: transform .55s var(--ease);
}

.glass-nav .brand:hover .brand-symbol { transform: rotate(180deg) scale(1.05); }
.glass-nav .brand-word { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }
.glass-nav .brand-role { padding-left: 10px; border-left: 1px solid var(--line); color: var(--muted); font-size: .72rem; font-weight: 700; letter-spacing: .11em; }

.glass-nav .main-nav { display: flex; align-items: center; gap: clamp(22px, 3vw, 46px); }
.glass-nav .main-nav a { position: relative; padding: 0; color: var(--ink-soft, var(--soft)); font-size: .8rem; font-weight: 600; }
.glass-nav .main-nav a::after { content: ''; position: absolute; left: 0; right: 100%; bottom: -7px; width: auto; height: 2px; background: var(--nav-ui); transition: right .35s var(--ease); }
.glass-nav .main-nav a:hover::after,
.glass-nav .main-nav a.is-active::after { right: 0; }
.glass-nav .main-nav a:hover,
.glass-nav .main-nav a.is-active { color: var(--ink); }

.glass-nav .nav-tools { justify-self: end; display: flex; align-items: center; gap: 8px; }
.glass-nav .language-switch,
.glass-nav .sound-toggle,
.glass-nav .theme-switch,
.glass-nav .menu-switch {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .1);
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .2);
}
.glass-nav .language-switch { display: flex; align-items: center; height: 38px; padding: 3px; border-radius: 999px; }
.glass-nav .language-switch span { width: 34px; height: 30px; display: grid; place-items: center; border-radius: 999px; color: var(--muted); font-size: .75rem; font-weight: 700; }
.glass-nav .language-switch span.is-active,
.glass-nav .language-switch[data-active="it"] span[data-lang="it"],
.glass-nav .language-switch[data-active="en"] span[data-lang="en"] { color: #101512; background: var(--nav-acid); }
.glass-nav .sound-toggle,
.glass-nav .theme-switch { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; }
.glass-nav .sound-toggle svg { overflow: visible; }
.glass-nav .sound-toggle .snd-wave,
.glass-nav .sound-toggle .snd-mute { transform-origin: center; transition: opacity .2s var(--ease), transform .2s var(--ease); }
.glass-nav .sound-toggle[data-on="true"] .snd-mute { opacity: 0; transform: scale(.65); }
.glass-nav .sound-toggle[data-on="false"] .snd-wave { opacity: 0; transform: scale(.65); }
.glass-nav .sound-toggle.is-pinging .snd-wave-1 { animation: navSoundPulse .5s var(--ease); }
.glass-nav .sound-toggle.is-pinging .snd-wave-2 { animation: navSoundPulse .5s var(--ease) .1s; }
@keyframes navSoundPulse { 50% { opacity: .25; transform: scale(.8); } }
.glass-nav .theme-light,
[data-theme="light"] .glass-nav .theme-dark { display: none; }
[data-theme="light"] .glass-nav .theme-light { display: block; }
.glass-nav .menu-switch { display: none; width: 38px; height: 38px; place-content: center; gap: 5px; border-radius: 50%; }
.glass-nav .menu-switch span { width: 15px; height: 1px; background: currentColor; transition: transform .3s var(--ease); }

.cs-body { padding-top: 80px; }
.cs-body .cs-page { padding-top: clamp(40px, 7vw, 88px); }

[data-theme="dark"] .glass-nav { --nav-ui: var(--nav-acid); }
[data-theme="dark"] .glass-nav::before {
  background:
    linear-gradient(118deg,
      rgba(255, 255, 255, .11) 0%,
      rgba(255, 255, 255, .03) 24%,
      transparent 45%,
      color-mix(in srgb, var(--nav-acid) 6%, transparent) 76%,
      rgba(255, 255, 255, .06) 100%),
    color-mix(in srgb, var(--bg) 36%, transparent);
}
[data-theme="dark"] .glass-nav.is-scrolled::before,
[data-theme="dark"] .glass-nav.scrolled::before {
  background:
    linear-gradient(118deg,
      rgba(255, 255, 255, .1) 0%,
      rgba(255, 255, 255, .025) 24%,
      transparent 45%,
      color-mix(in srgb, var(--nav-acid) 5%, transparent) 76%,
      rgba(255, 255, 255, .05) 100%),
    color-mix(in srgb, var(--bg) 50%, transparent);
}
[data-theme="dark"] .glass-nav .language-switch,
[data-theme="dark"] .glass-nav .sound-toggle,
[data-theme="dark"] .glass-nav .theme-switch,
[data-theme="dark"] .glass-nav .menu-switch { background: rgba(255, 255, 255, .045); }

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass-nav::before { background: color-mix(in srgb, var(--bg) 96%, transparent); }
}

@media (max-width: 1100px) {
  .glass-nav .brand-role { display: none; }
}

@media (max-width: 780px) {
  .glass-nav { top: 8px; left: 8px; right: 8px; height: 58px; grid-template-columns: 1fr auto; padding: 0 10px 0 12px; }
  .glass-nav .brand-symbol { width: 30px; height: 30px; }
  .glass-nav .brand-word { font-size: 1.05rem; }
  .glass-nav .main-nav { position: fixed; top: 74px; left: 8px; right: 8px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px; border: 1px solid var(--line); border-radius: 22px; background: color-mix(in srgb, var(--bg) 94%, transparent); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 18px 60px rgba(0, 0, 0, .18); }
  .glass-nav .main-nav.is-open,
  .glass-nav .main-nav.open { display: flex; }
  .glass-nav .main-nav a { padding: 14px 10px; border-bottom: 1px solid var(--line); font-size: .85rem; }
  .glass-nav .main-nav a:last-child { border-bottom: 0; }
  .glass-nav .main-nav a::after { display: none; }
  .glass-nav .menu-switch { display: grid; }
  .glass-nav .menu-switch[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
  .glass-nav .menu-switch[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
  .glass-nav .language-switch span { width: 29px; }
  .glass-nav .sound-toggle,
  .glass-nav .theme-switch,
  .glass-nav .language-switch { height: 34px; }
  .glass-nav .sound-toggle,
  .glass-nav .theme-switch { width: 34px; }
  .cs-body { padding-top: 66px; }
}

@media (max-width: 480px) {
  .glass-nav .brand-word { display: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .glass-nav::before { background: var(--bg); -webkit-backdrop-filter: none; backdrop-filter: none; }
  .glass-nav::after { display: none; }
}