/* Header-specific styles building on base.css */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header-inner {
  gap: var(--space-16);
}

.site-header-branding {
  display: flex;
  align-items: center;
}

.site-logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  text-decoration: none;
}

.site-logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.site-logo-initials {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.site-logo-text {
  display: flex;
  flex-direction: column;
}

.site-logo-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-logo-subtitle {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

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

.nav-links {
  align-items: center;
}

.nav-item {
  list-style: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

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

.nav-cta {
  font-size: 0.85rem;
  color: white !important;
}

/* Mobile nav toggle */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-200);
  background-color: #ffffff;
  cursor: pointer;
}

.nav-toggle-bar {
  width: 1.35rem;
  height: 2px;
  background-color: var(--gray-800);
  border-radius: 999px;
  transition: transform var(--transition-base), opacity var(--transition-base),
    background-color var(--transition-base);
}

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

/* Hamburger to X animation */
.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 767.98px) {
  .site-header-inner {
    padding-block: 0.5rem;
  }

  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(248, 250, 252, 0.98);
    border-bottom: 1px solid rgba(148, 163, 184, 0.25);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base),
      visibility var(--transition-base);
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: scaleY(1);
  }

  .nav-links {
    display: flex;
    flex-direction: column;
    padding: var(--space-16);
    gap: var(--space-8);
  }

  .nav-item-cta {
    margin-left: 0;
    margin-top: var(--space-8);
  }

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

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

  .site-nav {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    border-bottom: none;
  }
}