/* ============ Site Header ============ */
/* Depends on the design tokens (--black, --gold, --font-label, etc.) defined in css/style.css */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--black);
  border-bottom: 3px solid rgba(255,255,255,0.1);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}
.site-header.is-hidden {
  transform: translateY(-100%);
}
.site-header.header-transparent {
  background: transparent;
  border-bottom-color: transparent;
}

.header-inner {
  width: 100%;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
  padding: 18px 64px;
  transition: padding 0.3s ease;
}

.site-header.header-transparent .header-inner {
  padding-top: 6px;
  padding-bottom: 6px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo-img {
  height: 128px;
  width: auto;
  display: block;
}

/* ---- Desktop: logo on the left, nav + CTA on the right ---- */
.main-nav-desktop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 40px;
}
.nav-right-cluster {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-group {
  display: flex;
  align-items: center;
  gap: 44px;
}

.nav-link {
  font-family: var(--font-label);
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-light);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.nav-link:hover,
.nav-link.active {
  color: var(--text-light);
  border-bottom-color: var(--gold);
}

.header-cta {
  flex-shrink: 0;
}

/* ---- Mobile-only elements, hidden on desktop ---- */
.brand-mobile,
.nav-toggle,
.main-nav-mobile {
  display: none;
}

@media (max-width: 860px) {
  .main-nav-desktop { display: none; }
  .header-cta { display: none !important; }

  .header-inner {
    justify-content: space-between;
    padding: 18px 24px;
  }

  .brand-mobile { display: flex; align-items: center; }
  .brand-mobile .brand-logo-img { height: 78px; }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span {
    width: 26px;
    height: 2px;
    background: var(--text-light);
    transition: all 0.25s ease;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .main-nav-mobile {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: rgba(10,10,9,0.97);
    padding: 22px 28px;
    gap: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
  }
  .main-nav-mobile.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav-mobile .nav-link {
    font-size: 0.98rem;
  }
}