/* Header styles scoped to .site-header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(18px);
  color: #e5e7eb;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.site-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  color: inherit;
}

.site-header__logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.8rem;
  background:
    radial-gradient(circle at 20% 20%, rgba(96, 165, 250, 0.9), transparent 60%),
    radial-gradient(circle at 80% 80%, rgba(129, 140, 248, 0.9), transparent 60%),
    #020617;
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.3), var(--shadow-md);
  position: relative;
}

.site-header__logo-mark::after {
  content: "EH";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #e5e7eb;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.site-header__brand-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #f9fafb;
}

.site-header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
  white-space: nowrap;
}

/* Navigation */

.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  color: #e5e7eb;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.25rem;
  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);
}

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

.site-header__nav-link--cta {
  padding-inline: 0.9rem;
  background-image: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

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

.site-header__nav-item--cta {
  margin-left: var(--space-8);
}

.site-header__nav-link:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

/* Mobile toggle */

.site-header__toggle {
  display: none;
  position: relative;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: inherit;
  justify-content: center;
  align-items: center;
}

.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  position: absolute;
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: #e5e7eb;
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
}

.site-header__toggle-icon::before {
  top: -0.32rem;
}

.site-header__toggle-icon::after {
  bottom: -0.32rem;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon {
  transform: rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::before {
  top: 0;
  transform: rotate(-90deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
  bottom: 0;
  opacity: 0;
}

.site-header__toggle:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

/* Responsive behavior */

@media (max-width: 960px) {
  .site-header__brand-tagline {
    display: none;
  }
}

@media (max-width: 800px) {
  .site-header__inner {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid rgba(31, 41, 55, 0.9);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    visibility: hidden;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-12) var(--space-16) var(--space-16);
  }

  .site-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
  }

  .site-header__nav-link {
    width: 100%;
    padding: 0.55rem 0.75rem;
  }

  .site-header__nav-link::after {
    left: 0.75rem;
    right: 0.75rem;
  }

  .site-header__nav-link--cta {
    justify-content: center;
  }

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

@media (max-width: 520px) {
  .site-header__brand-name {
    font-size: 0.95rem;
  }
}