/* =============================================================
   Navigation – Atelier Kleyn
   ============================================================= */

/* ---- Site header ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  padding: 0 var(--container-padding);
  transition: background var(--ease), box-shadow var(--ease);
}

.site-header.scrolled {
  background: rgba(10, 10, 10, 0.97);
  box-shadow: 0 1px 0 var(--border-gold);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 2rem;
}

/* ---- Logo ---- */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo img,
.site-logo svg {
  height: 56px;
  width: auto;
}

/* ---- Main nav ---- */
#header-nav .menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

#header-nav .menu li {
  position: relative;
}

#header-nav .menu a {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-white-dim);
  transition: color var(--ease);
  padding-bottom: 4px;
  position: relative;
}

#header-nav .menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width var(--ease);
}

#header-nav .menu a:hover,
#header-nav .menu .current-menu-item>a {
  color: var(--color-white);
}

#header-nav .menu a:hover::after,
#header-nav .menu .current-menu-item>a::after {
  width: 100%;
}

/* ---- Dropdown ---- */
#header-nav .menu .sub-menu {
  position: absolute;
  top: calc(100% + 16px);
  left: 0;
  min-width: 200px;
  background: var(--color-black-soft);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
  flex-direction: column;
  gap: 0;
}

#header-nav .menu li:hover>.sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#header-nav .menu .sub-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.75rem;
  color: var(--color-white-dim);
}

#header-nav .menu .sub-menu a:hover {
  color: var(--color-gold);
  background: rgba(201, 168, 76, 0.05);
}

#header-nav .menu .sub-menu a::after {
  display: none;
}

/* ---- Header CTA area ---- */
.header-cta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

/* ---- Language switcher ---- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-switch .lang-item {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-white-dim);
  transition: color var(--ease);
}

.lang-switch .lang-item.active,
.lang-switch .lang-item:hover {
  color: var(--color-gold);
}

.lang-switch .divider {
  width: auto;
  height: auto;
  background: none;
  margin: 0;
  color: var(--border-gold);
  font-size: 0.6rem;
}

/* ---- Nav CTA button ---- */
.header-cta .btn-nav-cta {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  border: 1px solid var(--border-gold);
  padding: 10px 24px;
  border-radius: var(--radius);
  transition: var(--ease);
}

.header-cta .btn-nav-cta:hover {
  border-color: var(--color-gold);
  background: var(--color-gold);
  color: var(--color-black);
}

/* ---- Hamburger ---- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  transition: var(--ease);
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- Mobile nav ---- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.98);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  backdrop-filter: blur(12px);
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav .menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.mobile-nav .menu a {
  font-size: 1.6rem;
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--color-white-dim);
  letter-spacing: 0.08em;
  transition: color var(--ease);
}

.mobile-nav .menu a:hover {
  color: var(--color-gold);
}

.mobile-nav .btn {
  width: auto;
  text-align: center;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .site-header {
    padding: 0 32px;
  }

  .header-cta a.btn {
    display: none;
  }

  #header-nav,
  .header-cta .btn-nav-cta,
  .lang-switch {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    top: var(--nav-height);
  }
}

@media (max-width: 640px) {
  :root {
    --nav-height: 72px;
  }

  .site-header {
    padding: 0 20px;
  }

  .site-logo img,
  .site-logo svg {
    height: 44px;
  }
}