/* Header layout */
.lf-site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background-color: rgba(245, 242, 235, 0.94);
  border-bottom: 1px solid var(--color-border-subtle);
}

.lf-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-3);
}

/* Brand */
.lf-brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.lf-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--color-text);
  box-shadow: inset 0 0 0 2px var(--color-primary-soft);
  position: relative;
}

.lf-brand-mark::before,
.lf-brand-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 999px;
}

.lf-brand-mark::before {
  border: 1px solid var(--color-primary);
}

.lf-brand-mark::after {
  border: 1px solid var(--color-graphite);
  transform: rotate(32deg);
}

.lf-brand-text {
  display: flex;
  flex-direction: column;
}

.lf-brand-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.lf-brand-subtitle {
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

/* Primary nav */
.lf-primary-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-6);
}

.lf-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.lf-nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
}

.lf-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-graphite));
  transition: width var(--transition-base);
}

.lf-nav-link:hover::after,
.lf-nav-link:focus-visible::after,
.lf-nav-link[aria-current="page"]::after {
  width: 100%;
}

.lf-nav-link[aria-current="page"] {
  color: var(--color-primary);
}

.lf-header-cta-wrapper {
  display: flex;
  align-items: center;
}

.lf-header-cta {
  font-size: var(--font-size-xs);
  padding-inline: 1.4rem;
}

/* Mobile toggle */
.lf-nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-strong);
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--color-text);
}

.lf-nav-toggle-box {
  width: 20px;
  height: 16px;
  position: relative;
}

.lf-nav-toggle-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.lf-nav-toggle-line-top {
  top: 0;
}

.lf-nav-toggle-line-middle {
  top: 7px;
}

.lf-nav-toggle-line-bottom {
  bottom: 0;
}

.lf-nav-toggle-text {
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Toggle active state */
.lf-site-header--nav-open .lf-nav-toggle-line-top {
  top: 7px;
  transform: rotate(42deg);
}

.lf-site-header--nav-open .lf-nav-toggle-line-middle {
  opacity: 0;
}

.lf-site-header--nav-open .lf-nav-toggle-line-bottom {
  bottom: 7px;
  transform: rotate(-42deg);
}

/* Responsive */
@media (max-width: 900px) {
  .lf-header-inner {
    padding-block: var(--space-2);
  }

  .lf-nav-toggle {
    display: inline-flex;
  }

  .lf-primary-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background-color: rgba(245, 242, 235, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-subtle);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-4) var(--space-5);
    transform-origin: top center;
    transform: scaleY(1);
  }

  /* No-JS default: menu visible; JS will add [data-collapsible] to control it */
  .lf-primary-nav[data-collapsible="true"] {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: scaleY(0.96);
    transition: max-height var(--transition-slow), opacity var(--transition-base), padding var(--transition-base), transform var(--transition-base);
  }

  .lf-site-header--nav-open .lf-primary-nav[data-collapsible="true"] {
    max-height: 480px;
    padding-top: var(--space-4);
    padding-bottom: var(--space-5);
    opacity: 1;
    pointer-events: auto;
    transform: scaleY(1);
  }

  .lf-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .lf-header-cta-wrapper {
    width: 100%;
  }

  .lf-header-cta {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .lf-brand-subtitle {
    display: none;
  }
}