/* ==========================================================================
   Header & Navigation, The Neighbourhood Penryn
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: var(--space-md) 0;
  transition: background-color var(--duration-base) var(--ease-out),
              padding var(--duration-base) var(--ease-out),
              backdrop-filter var(--duration-base) var(--ease-out);
}

.site-header--transparent {
  background-color: transparent;
}

.site-header--scrolled {
  background-color: rgba(245, 243, 239, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-sm) 0;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- Logo ---- */
.site-logo {
  position: relative;
  z-index: calc(var(--z-header) + 1);
}

.site-logo__link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
  gap: var(--space-sm);
}

.site-logo__img {
  height: clamp(40px, 4.5vw, 50px);
  width: auto;
  display: block;
}

.site-logo__text {
  font-family: var(--font-serif);
  font-size: var(--text-md);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
}

.site-logo__subtext {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
  display: block;
  margin-top: 2px;
}

/* Transparent header logo */
.site-header--transparent .site-logo__text {
  color: var(--color-warm-white);
}

.site-header--transparent .site-logo__subtext {
  color: rgba(255, 255, 255, 0.6);
}

.site-header--scrolled .site-logo__text {
  color: var(--text-primary);
}

.site-header--scrolled .site-logo__subtext {
  color: var(--text-tertiary);
}

/* ---- Main Nav ---- */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.main-nav__link {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-primary);
  position: relative;
  padding: 0.25em 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.main-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-brand);
  transition: width var(--duration-base) var(--ease-smooth);
}

.main-nav__link:hover::after,
.main-nav__link--active::after {
  width: 100%;
}

.main-nav__link:hover {
  color: var(--color-brand);
}

/* Transparent header links */
.site-header--transparent .main-nav__link {
  color: var(--color-warm-white);
}

.site-header--transparent .main-nav__link:hover {
  color: var(--color-warm-white);
}

.site-header--transparent .main-nav__link::after {
  background-color: var(--color-warm-white);
}

.site-header--scrolled .main-nav__link {
  color: var(--text-primary);
}

.site-header--scrolled .main-nav__link:hover {
  color: var(--color-brand);
}

.site-header--scrolled .main-nav__link::after {
  background-color: var(--color-brand);
}

/* ---- Header CTA ---- */
.header-cta {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.75em 1.75em;
  transition: all var(--duration-base) var(--ease-out);
  white-space: nowrap;
  line-height: 1;
}

.site-header--transparent .header-cta {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--color-warm-white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.site-header--transparent .header-cta:hover {
  background-color: var(--color-warm-white);
  color: var(--color-ink);
  border-color: var(--color-warm-white);
}

.site-header--scrolled .header-cta {
  background-color: var(--color-brand);
  color: var(--color-warm-white);
  border: 1px solid var(--color-brand);
}

.site-header--scrolled .header-cta:hover {
  background-color: var(--color-brand-dark);
  border-color: var(--color-brand-dark);
  color: var(--color-warm-white);
}

/* ---- Mobile Toggle ---- */
.nav-toggle {
  display: none;
  position: relative;
  z-index: calc(var(--z-header) + 1);
  width: 32px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle__bar {
  display: block;
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: transform var(--duration-base) var(--ease-smooth),
              opacity var(--duration-fast) var(--ease-out),
              top var(--duration-base) var(--ease-smooth);
}

.nav-toggle__bar:nth-child(1) { top: 0; }
.nav-toggle__bar:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle__bar:nth-child(3) { top: 100%; transform: translateY(-100%); }

.site-header--transparent .nav-toggle__bar {
  background-color: var(--color-warm-white);
}

.site-header--scrolled .nav-toggle__bar {
  background-color: var(--text-primary);
}

/* Toggle active state */
.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  top: 50%;
  transform: translateY(-50%) rotate(-45deg);
}

.nav-toggle.is-active .nav-toggle__bar {
  background-color: var(--color-warm-white);
}

/* ---- Mobile Navigation ---- */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-header);
  background-color: var(--color-ink);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-slow) var(--ease-smooth),
              visibility var(--duration-slow) var(--ease-smooth);
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: center;
}

.mobile-nav__item {
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-base) var(--ease-smooth),
              transform var(--duration-base) var(--ease-smooth);
}

.mobile-nav.is-open .mobile-nav__item {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav.is-open .mobile-nav__item:nth-child(1) { transition-delay: 100ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(2) { transition-delay: 150ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(3) { transition-delay: 200ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(4) { transition-delay: 250ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(5) { transition-delay: 300ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(6) { transition-delay: 350ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(7) { transition-delay: 400ms; }
.mobile-nav.is-open .mobile-nav__item:nth-child(8) { transition-delay: 450ms; }

.mobile-nav__link {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-regular);
  color: var(--color-warm-white);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover {
  color: var(--color-brass);
}

.mobile-nav__cta {
  margin-top: var(--space-xl);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-base) var(--ease-smooth),
              transform var(--duration-base) var(--ease-smooth);
}

.mobile-nav.is-open .mobile-nav__cta {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 500ms;
}

.mobile-nav__details {
  margin-top: var(--space-2xl);
  text-align: center;
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-smooth);
}

.mobile-nav.is-open .mobile-nav__details {
  opacity: 1;
  transition-delay: 600ms;
}

.mobile-nav__details p {
  font-size: var(--text-sm);
  color: var(--color-stone);
  margin-bottom: var(--space-xs);
}

.mobile-nav__details a {
  color: var(--color-stone);
  text-decoration: none;
}

.mobile-nav__details a:hover {
  color: var(--color-warm-white);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .main-nav__list {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .header-cta--desktop {
    display: none;
  }
}

@media (min-width: 1025px) {
  .mobile-nav {
    display: none;
  }
}

/* ==========================================================================
   v2.1, Traditional desktop nav (reveals on scroll) + mobile hamburger
   The original responsive rules above stand: horizontal nav above 1024px,
   hamburger at/below 1024px. These additions keep the light-cream hero
   header readable and fade the desktop nav + CTA in once the header
   solidifies on scroll.
   ========================================================================== */

/* Light-hero transparent state, dark logo + hamburger (not white) */
.site-header--transparent {
  background-color: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.site-header--transparent .site-logo__text {
  color: var(--text-primary);
}

.site-header--transparent .site-logo__subtext {
  color: var(--text-tertiary);
}

.site-header--transparent .nav-toggle__bar {
  background-color: var(--text-primary);
}

/* Desktop: nav + CTA hidden at the top of the hero, revealed on scroll */
@media (min-width: 1025px) {
  .site-header--transparent .main-nav__list,
  .site-header--transparent .header-cta--desktop {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-quiet),
                visibility var(--duration-base) var(--ease-quiet),
                transform var(--duration-base) var(--ease-quiet);
  }

  .site-header--scrolled .main-nav__list,
  .site-header--scrolled .header-cta--desktop {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
}

/* Overlay (mobile) menu links in Montserrat */
.mobile-nav__link {
  font-family: var(--font-ui);
  font-weight: var(--weight-semibold);
  text-transform: none;
  letter-spacing: -0.01em;
}