/* =========================================================
   Floating navigation bar
   ========================================================= */

.nav-shell {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 24px);
  max-width: 1280px;
  z-index: var(--z-nav);
  pointer-events: none;
}

.nav {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.55rem 0.55rem 0.55rem 1.25rem;
  border-radius: var(--r-pill);
  background: rgba(12, 14, 19, 0.6);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: transform var(--t-norm), background var(--t-norm), border-color var(--t-norm);
}

.nav.scrolled {
  background: rgba(8, 9, 12, 0.85);
  border-color: var(--line-bright);
}
.nav.hidden { transform: translateY(-150%); }

.nav-logo {
  display: inline-flex;
  align-items: center;
  cursor: none;
  flex-shrink: 0;
}

/* Brand image — full SpagettiCode lockup */
.brand-logo {
  height: 44px;
  width: auto;
  display: block;
  filter: brightness(1.55) saturate(1.15) contrast(1.05);
  transition: filter var(--t-fast), transform var(--t-fast);
}
.nav-logo:hover .brand-logo {
  filter: brightness(1.7) saturate(1.3) contrast(1.05) drop-shadow(0 4px 12px rgba(0, 229, 255, 0.35));
}
.brand-logo.lg { height: 58px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  margin-right: 0.5rem;
}

.nav-link {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.5rem 0.9rem;
  border-radius: var(--r-pill);
  cursor: none;
  transition: color var(--t-fast);
}
.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.06);
  opacity: 0;
  transition: opacity var(--t-fast);
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::before,
.nav-link.active::before { opacity: 1; }
.nav-link.active { color: var(--text); }
.nav-link span { position: relative; }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-accent);
  background: var(--accent);
  padding: 0.7rem 1.1rem;
  border-radius: var(--r-pill);
  cursor: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  box-shadow: 0 6px 22px rgba(255, 84, 54, 0.35);
}
.nav-cta:hover {
  background: var(--accent-hi);
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(255, 84, 54, 0.55);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  cursor: none;
}
.nav-toggle span {
  position: relative;
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--t-norm), opacity var(--t-norm);
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--text);
  transition: transform var(--t-norm);
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after  { top: 5px; }

.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle.open span::after  { transform: translateY(-5px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 89;
  background: rgba(8, 9, 12, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  padding: 6rem 2rem 4rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-norm);
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-logo {
  height: 64px;
  width: auto;
  margin: 0 auto 2rem;
  align-self: center;
  filter: brightness(1.55) saturate(1.15);
}
.mobile-menu a {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 12vw, 5rem);
  line-height: 1.05;
  color: var(--text);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--t-fast), padding-left var(--t-fast);
}
.mobile-menu a:hover {
  color: var(--accent);
  padding-left: 0.6rem;
}
.mobile-menu a small {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}