/* ══════════════════════════════════════════════
   ALIVE GANGHWA — Shared Navigation & Mobile UI
   ══════════════════════════════════════════════ */

/* ── iOS Safe Area ── */
:root {
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

/* ── Body scroll lock when menu open ── */
body.nav-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

/* ── NAV — Base ── */
nav#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h, 72px);
  padding-top: var(--safe-top);
  z-index: 1200;
  padding-left: max(5%, var(--safe-left));
  padding-right: max(5%, var(--safe-right));
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background .35s ease,
              backdrop-filter .35s ease,
              box-shadow .35s ease;
}

/* ── Glassmorphism on scroll ── */
nav#navbar.scrolled {
  background: rgba(253, 248, 240, .88) !important;
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: 0 1px 0 rgba(139, 105, 20, .08),
              0 4px 20px rgba(44, 36, 22, .06) !important;
}

/* ── Hero-nav transparent state ── */
nav#navbar.hero-nav:not(.scrolled) {
  background: transparent !important;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none !important;
}

/* ── Logo ── */
nav#navbar .nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
nav#navbar .nav-logo img {
  height: 40px;
  transition: transform .25s ease;
}
nav#navbar .nav-logo:hover img {
  transform: scale(1.05);
}
.nav-logo-fallback {
  display: none;
  font-family: 'Noto Serif KR', serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
}

/* ── Links (Desktop) ── */
nav#navbar .nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}
nav#navbar .nav-links a {
  text-decoration: none;
  color: var(--text);
  font-size: .95rem;
  font-weight: 500;
  position: relative;
  padding: .3rem 0;
  transition: color .3s;
}
nav#navbar .nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold);
  transition: width .3s cubic-bezier(.23, 1, .32, 1);
}
nav#navbar .nav-links a:hover,
nav#navbar .nav-links a.active {
  color: var(--brown);
}
nav#navbar .nav-links a:hover::after,
nav#navbar .nav-links a.active::after {
  width: 100%;
}
nav#navbar .nav-links a:focus-visible,
nav#navbar .menu-btn:focus-visible {
  outline: 2px solid rgba(201, 168, 76, .9);
  outline-offset: 4px;
}

/* Shared highlighted CTA item */
nav#navbar .nav-links a.nav-cta {
  color: var(--gold);
  font-weight: 700;
  background: rgba(201, 168, 76, .08);
  border-radius: 999px;
  padding: .45rem .9rem;
}
nav#navbar .nav-links a.nav-cta::after {
  display: none;
}
nav#navbar .nav-links a.nav-cta:hover,
nav#navbar .nav-links a.nav-cta.active {
  color: var(--brown);
  background: rgba(201, 168, 76, .16);
}

/* Hero-nav link colors (desktop, transparent state) */
nav#navbar.hero-nav:not(.scrolled) .nav-links a {
  color: rgba(255, 255, 255, .9);
}
nav#navbar.hero-nav:not(.scrolled) .nav-links a:hover,
nav#navbar.hero-nav:not(.scrolled) .nav-links a.active {
  color: #fff;
}
nav#navbar.hero-nav:not(.scrolled) .nav-links a.nav-cta {
  color: var(--gold-light);
}
nav#navbar.hero-nav:not(.scrolled) .nav-links a.nav-cta:hover,
nav#navbar.hero-nav:not(.scrolled) .nav-links a.nav-cta.active {
  color: #fff;
}

/* ── Hamburger Button — 44px touch target ── */
nav#navbar .menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  border: none;
  background: none;
  position: relative;
  z-index: 1300;
  pointer-events: auto;
  -webkit-tap-highlight-color: transparent;
}
nav#navbar .menu-btn span {
  display: block;
  width: 26px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: transform .28s ease, opacity .22s ease, background .28s ease;
}
nav#navbar.hero-nav:not(.scrolled) .menu-btn span {
  background: rgba(255, 255, 255, .92);
}

/* ── Mobile Overlay (backdrop) ── */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0);
  pointer-events: none;
  transition: background .35s ease;
  -webkit-tap-highlight-color: transparent;
}
.nav-overlay.visible {
  background: rgba(0, 0, 0, .45);
  pointer-events: auto;
}

/* ── Mobile Drawer ── */
@media (max-width: 768px) {
  nav#navbar .menu-btn {
    display: flex;
  }

  nav#navbar .nav-links {
    position: fixed !important;
    top: 0;
    right: 0;
    width: min(82vw, 320px);
    height: 100vh;
    height: 100dvh;
    background: var(--cream, #FDF8F0);
    flex-direction: column;
    padding: calc(var(--nav-h, 72px) + var(--safe-top) + 1.5rem) 2rem calc(2rem + var(--safe-bottom));
    padding-right: calc(2rem + var(--safe-right));
    gap: .3rem;
    box-shadow: -10px 0 40px rgba(0, 0, 0, .18);
    z-index: 1250;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;

    /* slide off-screen by default */
    transform: translateX(110%);
    transition: transform .38s cubic-bezier(.32, .72, 0, 1);
    visibility: hidden;
  }

  /* Force display flex for hero-nav too */
  nav#navbar.hero-nav .nav-links {
    display: flex !important;
  }

  nav#navbar .nav-links.open {
    transform: translateX(0);
    visibility: visible;
  }

  /* Mobile link styles — 44px min touch target */
  nav#navbar .nav-links a {
    color: var(--text) !important;
    font-size: 1.05rem;
    font-weight: 500;
    padding: .75rem .8rem;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-radius: 10px;
    transition: background .2s, color .2s;
  }
  nav#navbar .nav-links a:hover,
  nav#navbar .nav-links a.active {
    color: var(--brown) !important;
    background: rgba(201, 168, 76, .08);
  }
  nav#navbar .nav-links a.nav-cta {
    color: var(--brown) !important;
    background: rgba(201, 168, 76, .16);
    font-weight: 700;
  }
  /* hide underline on mobile */
  nav#navbar .nav-links a::after {
    display: none;
  }
  /* active indicator bar on mobile */
  nav#navbar .nav-links a.active::before {
    content: '';
    width: 3px;
    height: 18px;
    background: var(--gold);
    border-radius: 2px;
    margin-right: .6rem;
    flex-shrink: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }

  nav#navbar,
  nav#navbar .nav-links,
  nav#navbar .nav-links a,
  nav#navbar .menu-btn span,
  .nav-overlay,
  #progress {
    transition: none !important;
    animation: none !important;
  }
}

/* ── Scroll Progress (shared) ── */
#progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  z-index: 9999;
  width: 0%;
  pointer-events: none;
  transition: width .1s linear;
}