/* ==========================================================================
   Centered-Brand Header — Night Stack Supper
   Split navigation with icon-only centered logo
   ========================================================================== */

/* Top micro notice bar */
.site-notice {
  text-align: center;
  padding: 6px var(--space-4);
  background: rgba(26, 19, 12, 0.95);
  border-bottom: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.site-notice__text {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(26, 19, 12, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

/* Compact on scroll */
.site-header--compact {
  background: rgba(15, 10, 6, 0.96);
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.site-header__inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  transition: height var(--transition-base);
}
.site-header--compact .site-header__inner {
  height: var(--header-compact-height);
}

/* Logo — icon only */
.site-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}
.site-logo:hover {
  transform: scale(1.04);
}
.site-logo__mark {
  display: block;
  width: 44px;
  height: 44px;
  transition: width var(--transition-base), height var(--transition-base);
}
.site-header--compact .site-logo__mark {
  width: 36px;
  height: 36px;
}

/* Subtle logo shimmer animation */
@keyframes logo-shimmer {
  0%   { filter: brightness(1) saturate(1); }
  25%  { filter: brightness(1.12) saturate(1.1); }
  50%  { filter: brightness(1) saturate(1); }
  75%  { filter: brightness(1.06) saturate(1.05); }
  100% { filter: brightness(1) saturate(1); }
}
.site-logo__mark {
  animation: logo-shimmer 6s ease-in-out infinite;
}
.site-logo:hover .site-logo__mark {
  animation-duration: 2s;
}

/* Navigation groups */
.site-nav {
  display: flex;
  align-items: center;
}
.site-nav--left {
  justify-content: flex-start;
  flex: 1;
}
.site-nav--right {
  justify-content: flex-end;
  flex: 1;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__link {
  position: relative;
  color: var(--color-text-soft);
  padding-block: 4px;
  transition: color var(--transition-base);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1.5px;
  border-radius: 999px;
  background: var(--color-gold);
  transition: width var(--transition-base);
}
.site-nav__link:hover {
  color: var(--color-gold-light);
}
.site-nav__link:hover::after,
.site-nav__link--active::after {
  width: 100%;
}

.site-nav__item--cta {
  margin-left: var(--space-2);
}

/* Mobile toggle — hidden on desktop */
.site-nav__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 32px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: rgba(26, 19, 12, 0.9);
  padding: 6px 8px;
  justify-content: center;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.site-nav__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.site-nav__toggle:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

/* Mobile nav panel */
.site-nav__mobile {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: var(--space-4);
}
.site-nav__mobile[hidden] {
  display: none;
}
.site-nav__mobile-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.site-nav__mobile-link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.site-nav__mobile-link:hover {
  color: var(--color-gold-light);
}

/* ── Desktop ── */
@media (min-width: 961px) {
  .site-nav__toggle { display: none !important; }
  .site-nav__mobile { display: none !important; }
}

/* ── Mobile (≤960px) ── */
@media (max-width: 960px) {
  .site-nav--left,
  .site-nav--right {
    display: none;
  }
  .site-nav__toggle {
    display: inline-flex;
    flex-direction: column;
  }
  .site-header__inner {
    justify-content: space-between;
  }
  .site-logo {
    margin: 0 auto;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  .site-notice__text {
    font-size: 0.6rem;
  }
}