/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition:
    background var(--transition-interactive),
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive),
    transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── Nav hide — shared by mobile AND desktop scroll-swap behavior ── */
.nav--hidden {
  transform: translateY(-100%);
  pointer-events: none; /* prevent click-through when hidden */
}

.nav.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 1px 24px rgba(0,0,0,0.3);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  text-decoration: none;
  transition: opacity var(--transition-interactive);
}
.nav__logo:hover { opacity: 0.75; }

.nav__logo-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

/* Nav logo image — pre-cropped FL mark at 120x120 */
.nav__logo-img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

@media (max-width: 768px) {
  .nav__inner {
    height: 68px; /* grow nav 4px to seat the larger logo cleanly */
  }
  .nav__logo-img {
    width: 62px;
    height: 62px;
    border-radius: 14px;
  }
  .nav__logo-text {
    font-size: 1.125rem;
    font-weight: 800;
    letter-spacing: -0.025em;
  }
}

/* Desktop links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav__links a {
  display: block;
  padding: 0.375rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text);
  background: var(--glass-hover);
}

/* Nav right */
.nav__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--glass-hover);
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-interactive);
}
.nav__hamburger:hover { background: var(--glass-hover); }
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}

/* ── Mobile Menu — Premium slide-down ── */
.nav__mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 11, 0.94);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 99;
  /* Slide-down animation */
  transform: translateY(-8px);
  opacity: 0;
  transition:
    transform 0.28s cubic-bezier(0.22,1,0.36,1),
    opacity 0.22s ease;
  pointer-events: none;
}
.nav__mobile.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* Nav links list */
.nav__mobile-links {
  padding: 0.5rem 0 0;
}
.nav__mobile-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1.25rem, 5vw, 2rem);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: -0.01em;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition:
    color 0.18s ease,
    background 0.18s ease;
  text-decoration: none;
}
.nav__mobile-link:hover,
.nav__mobile-link.active {
  color: var(--color-text);
  background: rgba(255,255,255,0.025);
}
.nav__mobile-link-text { flex: 1; }
.nav__mobile-link-arrow {
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  color: var(--color-primary-bright);
  flex-shrink: 0;
}
.nav__mobile-link:hover .nav__mobile-link-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* CTA area */
.nav__mobile-cta {
  padding: 1rem clamp(1.25rem, 5vw, 2rem) 1.5rem;
}
.nav__mobile-btn {
  width: 100%;
  justify-content: center;
  font-size: 0.9375rem;
}

/* FAB system moved to drawer.css (Bob Top system) */

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__right .btn { display: none; }
  .nav__hamburger { display: flex; }
}

/* ── Mobile-specific nav scroll behavior ── */
/* .nav--hidden and base transform transition are now global (above)
   so both mobile + desktop scroll-swap share the same hide animation */
@media (max-width: 900px) {
  /* Mobile nav hides on scroll-down, restores on scroll-up (handled in JS) */
  /* No additional rules needed — global .nav--hidden handles it */
}

/* Scroll-nav chips: hide when nav is hidden (mobile + desktop) */
/* JS adds .scroll-nav--nav-hidden when nav slides away */
.scroll-nav--nav-hidden {
  opacity: 0 !important;
  transform: translateY(-100%) !important;
  pointer-events: none !important;
}