/* Site header (global) */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--gcn-cream-50);
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.site-header__inner {
  max-width: 1280px;
  margin-inline: auto;
  min-height: var(--header-height);
  padding-inline: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.site-header__logo { display: inline-flex; align-items: center; }
.site-header__logo img,
.site-header__logo .custom-logo {
  display: block;
  height: 32px;
  width: auto;
}
.site-header__logo-text {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  line-height: 1;
  color: var(--color-heading);
  text-decoration: none;
}

.site-header__social {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  line-height: 0;
}
.site-header__social li { display: inline-flex; }
.site-header__social-link {
  display: flex;
  color: var(--color-heading);
  transition: color var(--transition-fast);
}
.site-header__social-link:hover { color: var(--color-heading-accent); }
.site-header__social-icon { width: 18px; height: 18px; }

@keyframes gcn-header-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: none; }
}
.js-reveal .site-header__logo,
.js-reveal .site-header__social li {
  animation: gcn-header-in var(--transition-reveal) both;
}
.js-reveal .site-header__logo                   { animation-delay: 0.10s; }
.js-reveal .site-header__social li:nth-child(1) { animation-delay: 0.30s; }
.js-reveal .site-header__social li:nth-child(2) { animation-delay: 0.42s; }
.js-reveal .site-header__social li:nth-child(3) { animation-delay: 0.54s; }

@media (prefers-reduced-motion: reduce) {
  .js-reveal .site-header__logo,
  .js-reveal .site-header__social li { animation: none; }
}

@media (max-width: 768px) {
  .site-header__inner {
    min-height: 64px;
    padding-inline: var(--container-pad-sm);
  }
  .site-header__logo img,
  .site-header__logo .custom-logo { height: 28px; }
}