/* Header (site-header) */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  background: linear-gradient(180deg, var(--color-background-elevated) 0%, rgba(26,20,16,0.9) 100%);
  border-bottom: 1px solid var(--color-neutral-800);
  backdrop-filter: saturate(120%) blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

/* Brand */
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-neutral-200);
}
.brand-link:hover { color: var(--color-primary-light); }

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at 60% 40%, rgba(201,169,97,0.6) 0%, rgba(201,169,97,0.1) 35%, transparent 36%),
    linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  box-shadow: var(--shadow-glow);
}

.brand-name {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-neutral-100);
}

/* Navigation */
.primary-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-ui);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-neutral-200);
  padding: var(--space-2) var(--space-1);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.nav-link:hover { color: var(--color-primary-light); border-color: var(--color-primary); }
.nav-link:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

.nav-cta .btn { white-space: nowrap; }

/* Menu toggle (mobile) */
.menu-toggle {
  display: none; /* shown when JS enhances or on small screens */
  gap: var(--space-2);
}
.menu-toggle .icon { font-size: 1.1rem; }

/* Progressive enhancement: menu visible by default. When JS is active on small screens, we collapse it */
.site-header.header--js .menu-toggle { display: none; }

@media (max-width: 900px) {
  .menu-toggle { display: none; }
  .primary-nav { position: static; }
  .nav-list { gap: var(--space-4); }

  /* JS-enhanced behavior */
  .site-header.header--js .menu-toggle { display: inline-flex; }
  .site-header.header--js .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-background-elevated);
    border-bottom: 1px solid var(--color-neutral-800);
    box-shadow: var(--shadow-lg);
    display: none; /* collapsed until opened */
  }
  .site-header.header--js .primary-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4) var(--space-6);
    gap: var(--space-3);
    margin: 0 20px;
  }
  .site-header.header--js.is-open .primary-nav { display: block; animation: navSlide var(--transition-slower) ease; }
  .site-header.header--js.is-open .menu-toggle .icon { transform: rotate(90deg); transition: transform var(--transition-base); }
}

@keyframes navSlide { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }