.emh-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  backdrop-filter: blur(18px);
  background: radial-gradient(circle at 0 0, rgba(15,23,42,0.9), transparent 55%),
    linear-gradient(to bottom, rgba(4,7,23,0.98), rgba(4,7,23,0.9));
  border-bottom: 1px solid rgba(148, 163, 184, 0.38);
}

.emh-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.emh-header__brand {
  display: flex;
  align-items: center;
}

.emh-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.emh-header__logo-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 20% 0, rgba(248,250,252,0.7), transparent 45%),
    radial-gradient(circle at 80% 120%, rgba(185,28,28,0.6), transparent 55%),
    linear-gradient(135deg, #020617, #111827);
  color: var(--color-primary-strong);
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: var(--text-sm);
  box-shadow: var(--shadow-gold-glow);
}

.emh-header__logo-text {
  display: flex;
  flex-direction: column;
}

.emh-header__logo-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.emh-header__logo-tagline {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
}

.emh-header__nav {
  display: flex;
  align-items: center;
}

.emh-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.emh-header__nav-link {
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  position: relative;
}

.emh-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.3rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

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

.emh-header__nav-item--accent .emh-header__nav-link--cta {
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(212, 175, 55, 0.75);
  background: radial-gradient(circle at 0 0, rgba(248,250,252,0.16), transparent 55%),
    linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #050816;
  box-shadow: var(--shadow-soft);
}

.emh-header__nav-link--cta::after {
  display: none;
}

.emh-header__nav-link--cta:hover {
  box-shadow: var(--shadow-gold-glow);
}

.emh-header__nav-icon {
  font-size: 0.8rem;
}

/* Mobile nav toggle */
.emh-header__nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15,23,42,0.9);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
}

.emh-header__nav-toggle-box {
  position: relative;
  width: 1.3rem;
  height: 1.1rem;
}

.emh-header__nav-toggle-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-info));
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.emh-header__nav-toggle-line--top {
  top: 0;
}

.emh-header__nav-toggle-line--middle {
  top: 50%;
  transform: translateY(-50%);
}

.emh-header__nav-toggle-line--bottom {
  bottom: 0;
}

.emh-header__nav-toggle:hover {
  border-color: var(--color-primary-strong);
  box-shadow: 0 0 0 1px rgba(212, 175, 55, 0.5);
}

.emh-header__nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Mobile layout defaults: menu visible without JS, stacked */
@media (max-width: 767.98px) {
  .emh-header__inner {
    gap: 1rem;
  }

  .emh-header__nav {
    position: fixed;
    inset: 3.5rem 0 auto 0;
    background: radial-gradient(circle at 0 0, rgba(15,23,42,0.98), transparent 60%),
      linear-gradient(to bottom, rgba(4,7,23,0.98), rgba(4,7,23,0.96));
    border-bottom: 1px solid rgba(148, 163, 184, 0.45);
    transform-origin: top;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

  .emh-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.9rem var(--container-padding-x) 1.2rem;
    gap: 0.9rem;
  }

  .emh-header__nav-link {
    font-size: var(--text-sm);
  }

  /* JS will add a class to hide the menu by default while keeping it usable with CSS alone if JS fails */
  .emh-header__nav--collapsed {
    transform: scaleY(0.85);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .emh-header__nav--open {
    transform: scaleY(1);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .emh-header__nav-toggle {
    display: inline-flex;
  }
}

/* Desktop layout */
@media (min-width: 768px) {
  .emh-header__nav-toggle {
    display: none;
  }

  .emh-header__nav {
    position: static;
  }

  .emh-header__nav-list {
    padding: 0;
  }
}

/* Nav toggle open state (controlled via JS) */
.emh-header__nav-toggle[aria-expanded="true"] .emh-header__nav-toggle-line--top {
  top: 50%;
  transform: translateY(-50%) rotate(40deg);
}

.emh-header__nav-toggle[aria-expanded="true"] .emh-header__nav-toggle-line--middle {
  opacity: 0;
}

.emh-header__nav-toggle[aria-expanded="true"] .emh-header__nav-toggle-line--bottom {
  bottom: 50%;
  transform: translateY(50%) rotate(-40deg);
}

.emh-header__skip-link {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -200%);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-pill);
  background: #f9fafb;
  color: #020617;
  font-size: var(--text-sm);
  font-weight: 500;
  z-index: var(--z-overlay);
  transition: transform var(--transition-base);
}

.emh-header__skip-link:focus {
  transform: translate(-50%, 0.4rem);
}