/* ============================================================
   BÀNAY BAKERY + CAFE — Navigation CSS
   ============================================================ */

/* ============================================================
   SITE NAV
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  padding: 1.5rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: 
    background var(--duration-mid) var(--ease-out),
    padding var(--duration-mid) var(--ease-out),
    backdrop-filter var(--duration-mid) var(--ease-out),
    box-shadow var(--duration-mid) var(--ease-out);
}

/* Transparent state (on hero) */
.site-nav.nav--transparent {
  background: transparent;
}

/* Scrolled state — frosted glass */
.site-nav.nav--scrolled {
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding-top: 1rem;
  padding-bottom: 1rem;
  box-shadow: 0 1px 0 rgba(13,13,11,0.06);
}

/* Dark nav (for dark sections) */
.site-nav.nav--dark {
  background: rgba(13, 13, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ============================================================
   NAV LOGO
   ============================================================ */
.nav-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  opacity: 0; /* animated in by GSAP */
  line-height: 1;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-logo__name {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.75rem;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-logo__sub {
  font-family: var(--font-body);
  font-weight: 200;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,253,249,0.65);
  margin-top: 0.2rem;
  transition: color var(--duration-fast) var(--ease-out);
}

.site-nav.nav--scrolled .nav-logo__name {
  color: var(--ink);
}

.site-nav.nav--scrolled .nav-logo__sub {
  color: var(--muted);
}

/* ============================================================
   NAV LINKS (Desktop)
   ============================================================ */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,253,249,0.85);
  position: relative;
  opacity: 0; /* animated in by GSAP */
  transition: color var(--duration-fast) var(--ease-out);
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform-origin: left;
  transform: scaleX(0);
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-link:hover::after,
.nav-link:focus::after {
  transform: scaleX(1);
}

.site-nav.nav--scrolled .nav-link {
  color: var(--ink);
}

/* ============================================================
   NAV CTA
   ============================================================ */
.nav-cta {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--terra);
  padding: 0.6rem 1.4rem;
  border-radius: 3px;
  opacity: 0; /* animated in by GSAP */
  transition: 
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-cta:hover {
  background: #9e5530;
}

/* ============================================================
   HAMBURGER (Mobile)
   ============================================================ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 600;
  position: relative;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  border-radius: 2px;
  transition: 
    transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
  transform-origin: center;
}

.site-nav.nav--scrolled .nav-hamburger span {
  background: var(--ink);
}

/* Hamburger open state */
.nav-hamburger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ============================================================
   MOBILE MENU OVERLAY
   ============================================================ */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 550;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  clip-path: circle(0% at calc(100% - 2.5rem) 3rem);
  transition: clip-path 0.7s var(--ease-out);
  pointer-events: none;
}

.nav-mobile.is-open {
  clip-path: circle(150% at calc(100% - 2.5rem) 3rem);
  pointer-events: all;
}

.nav-mobile__links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.nav-mobile__link {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(2.5rem, 8vw, 4rem);
  color: var(--cream);
  opacity: 0;
  transform: translateY(30px);
  transition: 
    color var(--duration-fast) var(--ease-out);
}

.nav-mobile__link:hover {
  color: var(--terra);
}

.nav-mobile.is-open .nav-mobile__link {
  animation: mobileNavIn 0.6s var(--ease-out) forwards;
}

.nav-mobile.is-open .nav-mobile__link:nth-child(1) { animation-delay: 0.1s; }
.nav-mobile.is-open .nav-mobile__link:nth-child(2) { animation-delay: 0.18s; }
.nav-mobile.is-open .nav-mobile__link:nth-child(3) { animation-delay: 0.26s; }
.nav-mobile.is-open .nav-mobile__link:nth-child(4) { animation-delay: 0.34s; }

@keyframes mobileNavIn {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav-mobile__cta {
  opacity: 0;
  transform: translateY(20px);
}

.nav-mobile.is-open .nav-mobile__cta {
  animation: mobileNavIn 0.6s var(--ease-out) 0.42s forwards;
}

.nav-mobile__footer {
  position: absolute;
  bottom: 2rem;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: rgba(250,247,242,0.3);
  text-transform: uppercase;
  opacity: 0;
}

.nav-mobile.is-open .nav-mobile__footer {
  animation: mobileNavIn 0.6s var(--ease-out) 0.5s forwards;
}

/* Close button for mobile menu */
.nav-hamburger.is-open span {
  background: var(--white);
}