.nav { position: fixed; inset: 0 0 auto; z-index: 50; color: var(--paper); transition: background .3s, color .3s; }
.nav.is-scrolled { background: var(--glass); color: var(--fg); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.nav.is-open { color: var(--fg); background: transparent; backdrop-filter: none; }
.nav__bar {
  height: 56px; padding: 0 var(--gutter);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px;
}
.nav__brand {
  font-family: var(--font-display); font-weight: 400; font-size: 20px; letter-spacing: .06em;
  text-transform: uppercase; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0;
}
.nav__rec { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; display: flex; align-items: center; gap: 8px; }
.nav__rec-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--signal); display: inline-block; animation: blink 1.2s steps(2, start) infinite; }
.nav__rec.is-paused .nav__rec-dot { animation: none; opacity: .35; }
@keyframes blink { to { visibility: hidden; } }
.nav__actions { display: flex; justify-content: flex-end; align-items: center; gap: 14px; }
.nav.is-scrolled .btn--pill, .nav.is-open .btn--pill { background: var(--fg); color: var(--bg); }
.nav:not(.is-scrolled):not(.is-open) .btn--pill { background: var(--paper); color: var(--ink); }
.nav__menu-btn { display: flex; align-items: center; gap: 10px; height: 34px; font-size: 14px; font-weight: 500; }
.nav__menu-icon { position: relative; width: 22px; height: 12px; }
.nav__menu-icon i { position: absolute; left: 0; width: 100%; height: 2px; background: currentColor; transition: transform .3s var(--ease), top .3s var(--ease); }
.nav__menu-icon i:first-child { top: 0; }
.nav__menu-icon i:last-child { top: 10px; }
.nav.is-open .nav__menu-icon i:first-child { top: 5px; transform: rotate(45deg); }
.nav.is-open .nav__menu-icon i:last-child { top: 5px; transform: rotate(-45deg); }
.nav__progress { height: 2px; background: var(--signal); transform-origin: left; transform: scaleX(0); opacity: 0; transition: opacity .3s; }
.nav.is-scrolled .nav__progress { opacity: 1; }

/* Full-screen contact-sheet menu */
.menu {
  position: fixed; inset: 0; z-index: 40; background: var(--bg); color: var(--fg);
  padding: 88px var(--gutter) 24px; display: flex; flex-direction: column; gap: 24px; overflow-y: auto;
  clip-path: inset(0 0 100% 0); transition: clip-path .6s var(--ease);
}
.menu.is-open { clip-path: inset(0 0 0 0); }
.menu__sheet { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; flex: 1; min-height: 0; }
.frame {
  position: relative; display: flex; flex-direction: column; justify-content: space-between;
  min-height: 220px; padding: 16px; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  opacity: 0; transform: translateY(20px); transition: opacity .4s, transform .4s var(--ease), border-color .2s;
}
.menu.is-open .frame { opacity: 1; transform: none; transition-delay: calc(var(--i) * 70ms + 200ms); }
.frame::before, .frame::after { /* film sprocket holes */
  content: ""; position: absolute; left: 8px; right: 8px; height: 6px;
  background: radial-gradient(circle, var(--line) 2px, transparent 2.5px) 0 0 / 14px 6px repeat-x;
}
.frame::before { top: 4px; } .frame::after { bottom: 4px; }
.frame__num { font-family: var(--font-mono); font-size: 12px; color: var(--muted); position: relative; z-index: 1; }
.frame__label { font-family: var(--font-display); font-weight: 400; letter-spacing: .02em; font-size: clamp(32px, 4vw, 56px); line-height: 1; text-transform: uppercase; position: relative; z-index: 1; }
.frame__clip { position: absolute; inset: 0; opacity: 0; transition: opacity .3s; }
.frame__clip video, .frame__clip div { width: 100%; height: 100%; object-fit: cover; }
.frame:hover, .frame:focus-visible { border-color: var(--signal); }
.frame:hover .frame__clip, .frame:focus-visible .frame__clip { opacity: .45; }
.menu__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); padding-top: 18px; }
.menu__socials { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; }
.menu__email { font-family: var(--font-mono); font-size: 13px; }
.theme-switch { display: flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.theme-switch button { padding: 6px 14px; border-radius: 999px; font-size: 13px; }
.theme-switch button[aria-pressed="true"] { background: var(--fg); color: var(--bg); }

@media (max-width: 900px) {
  .menu__sheet { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .frame { min-height: 150px; }
}
@media (max-width: 560px) {
  .nav__rec { display: none; }
  .nav__bar { grid-template-columns: 1fr auto; }
  .menu__sheet { grid-template-columns: 1fr; }
  .frame { min-height: 96px; flex-direction: row; align-items: flex-end; }
  .nav__menu-label { display: none; }
}