/* ============================================================
   MARI'S NAILS — Navigation
   ============================================================ */

/* ---- Top Bar --------------------------------------------- */
.topbar {
  background: var(--color-charcoal);
  color: rgba(255,255,255,0.75);
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
  padding: 0.45rem 0;
  text-align: center;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.topbar__link {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
}

.topbar__link:hover { color: var(--color-gold-light); }

/* ---- Main Nav -------------------------------------------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--transition-base), box-shadow var(--transition-base), top var(--transition-base);
}

/* Nav scrolled state */
.site-nav.scrolled {
  background: rgba(250,248,245,0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 24px rgba(48,44,43,.08);
}

/* Nav transparent (hero overlap) */
.site-nav.transparent {
  background: transparent;
}

.site-nav.transparent .nav-logo__text {
  color: var(--color-white);
  -webkit-text-fill-color: var(--color-white);
}

.site-nav.transparent .nav-logo__text span {
  color: var(--color-gold-light);
  -webkit-text-fill-color: var(--color-gold-light);
}

.site-nav.transparent .nav-link,
.site-nav.transparent .nav-link__sub {
  color: var(--color-white);
}

/* Keep active link gold even over a transparent/photo hero */
.site-nav.transparent .nav-link.active {
  color: var(--color-gold-light);
}
.site-nav.transparent .nav-link.active::after {
  background: var(--color-gold-light);
}

.site-nav.transparent .nav-logo__tagline {
  color: rgba(255,255,255,0.65);
  -webkit-text-fill-color: rgba(255,255,255,0.65);
}

.site-nav.transparent .nav-hamburger span { background: var(--color-white); }
.site-nav.transparent .btn--outline { border-color: rgba(255,255,255,.6); color: var(--color-white); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ---- Logo ------------------------------------------------ */
.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  text-decoration: none;
}

.nav-logo__text {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-charcoal);
  -webkit-text-fill-color: var(--color-charcoal);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.nav-logo__text span {
  color: var(--color-gold);
  -webkit-text-fill-color: var(--color-gold);
}

.nav-logo__tagline {
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
  margin-top: 2px;
  transition: color var(--transition-fast);
}

/* ---- Nav Links ------------------------------------------- */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item { position: relative; }

.nav-link {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-charcoal);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: var(--color-gold);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after { width: calc(100% - 2rem); }

.nav-link:hover { color: var(--color-gold); }
.nav-link.active { color: var(--color-gold); }

/* ---- Dropdown -------------------------------------------- */
.nav-item--dropdown:hover .nav-dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  padding: var(--space-3);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  border: 1px solid var(--color-blush);
}

.nav-dropdown__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-dropdown__link:hover {
  background: var(--color-blush);
  color: var(--color-gold-dark);
  padding-left: var(--space-5);
}

/* ---- Nav CTA -------------------------------------------- */
.nav-cta { margin-left: var(--space-4); }

/* ---- Hamburger ------------------------------------------ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-charcoal);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- Mobile Nav ----------------------------------------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: var(--color-ivory);
  flex-direction: column;
  padding: var(--space-32) var(--space-8) var(--space-8);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.mobile-nav__link {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 400;
  color: var(--color-charcoal);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-blush);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.mobile-nav__link:hover {
  color: var(--color-gold);
  padding-left: var(--space-4);
}

.mobile-nav__footer {
  margin-top: auto;
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav__social {
  display: flex;
  gap: var(--space-4);
}

.mobile-nav__social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-blush);
  color: var(--color-charcoal);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.mobile-nav__social-link:hover {
  background: var(--color-gold);
  color: var(--color-white);
}

/* ---- Responsive ----------------------------------------- */
@media (max-width: 900px) {
  .nav-menu, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .site-nav.transparent .nav-hamburger span { background: var(--color-white); }
}

/* Floating Book Button on mobile */
.mobile-book-btn {
  display: none;
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
}

@media (max-width: 640px) {
  .mobile-book-btn { display: block; }
}