/* ==========================================================================
   Navigation — Desktop glassmorphic + Mobile bottom tab bar
   ========================================================================== */

/* ── Desktop Nav ─────────────────────────────────────────────────────────── */
.desktop-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--space-8);
  color: #fff;
  background: rgba(250, 248, 245, 0.80);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text);
  transition: background var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out),
              color var(--duration-base) var(--ease-out);
}

@media (min-width: 769px) {
  .desktop-nav {
    display: flex;
  }
}

/* Scrolled state — glass-light on white pages */
.desktop-nav.scrolled {
  background: rgba(255, 255, 255, 0.80);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  color: var(--color-fg);
}

/* ── Nav Monogram ────────────────────────────────────────────────────────── */
.nav-monogram {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 300;
  letter-spacing: 0.25em;
  color: inherit;
  flex-shrink: 0;
}

/* ── Nav Links — absolutely centered so position is identical on all pages ── */
.desktop-nav nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: inherit;
  opacity: 0.85;
  transition: color var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

/* Per-link hover colors — each link uses its own page's accent color */
.nav-link[data-page="home"]:hover  { color: #C9956A; opacity: 1; }
.nav-link[data-page="model"]:hover { color: #B8860B; opacity: 1; }
.nav-link[data-page="ugc"]:hover   { color: #C97B8A; opacity: 1; }
.nav-link[data-page="ent"]:hover   { color: #8B6BAE; opacity: 1; }
.nav-link:hover { opacity: 1; }

.nav-link.active {
  position: relative;
  opacity: 1;
}
.nav-link.active[data-page="home"]  { color: #C9956A; }
.nav-link.active[data-page="model"] { color: #B8860B; }
.nav-link.active[data-page="ugc"]   { color: #C97B8A; }
.nav-link.active[data-page="ent"]   { color: #8B6BAE; }

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
}
.nav-link.active[data-page="home"]::after  { background: #C9956A; }
.nav-link.active[data-page="model"]::after { background: #B8860B; }
.nav-link.active[data-page="ugc"]::after   { background: #C97B8A; }
.nav-link.active[data-page="ent"]::after   { background: #8B6BAE; }

/* ── Nav CTA ─────────────────────────────────────────────────────────────── */
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-6);
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  border-radius: var(--radius-full);
  min-height: 44px;
  flex-shrink: 0;
  transition: background var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.nav-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.nav-cta:active {
  background: var(--color-accent-active);
  transform: translateY(0);
}

/* ── Mobile Nav ──────────────────────────────────────────────────────────── */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 64px;
  padding-bottom: env(safe-area-inset-bottom);
  display: none;
  align-items: center;
  justify-content: space-around;
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text);
}

@media (max-width: 768px) {
  .desktop-nav { display: none !important; }
  .mobile-nav { display: flex; }
  main { padding-bottom: 80px; }
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 44px;
  min-height: 44px;
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.mobile-nav-item:hover {
  color: var(--color-text);
}

.mobile-nav-item.active {
  color: var(--color-accent);
}

.mobile-nav-item svg {
  width: 20px;
  height: 20px;
}