/* Header-specific styling for Nova Oslava */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-menu-toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: radial-gradient(circle at 0% 0%, rgba(139, 92, 246, 0.2), transparent 50%),
              rgba(15, 23, 42, 0.96);
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.header-menu-toggle-bar {
  position: relative;
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: #e5e7eb;
  transition: transform var(--transition-normal), opacity var(--transition-normal), top var(--transition-normal), bottom var(--transition-normal);
}

.header-menu-toggle-bar + .header-menu-toggle-bar {
  margin-top: 0.25rem;
}

.header-menu-toggle:focus-visible {
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.9), 0 0 0 3px rgba(96, 165, 250, 0.9);
}

.header-menu-toggle.is-open .header-menu-toggle-bar:first-child {
  transform: translateY(3px) rotate(45deg);
}

.header-menu-toggle.is-open .header-menu-toggle-bar:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

.site-nav {
  column-gap: var(--space-4);
}

.site-nav-group {
  gap: var(--space-4);
}

.header-mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(5px);
  z-index: 30;
}

.header-mobile-overlay.is-visible {
  display: block;
}

@media (max-width: 900px) {
  .site-header-inner {
    justify-content: space-between;
    gap: var(--space-4);
  }

  .header-menu-toggle {
    display: inline-flex;
    flex-direction: column;
    z-index: 99990;
  }

  .site-nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 0;
    height: 100vh;
    padding: var(--space-8) var(--space-4) var(--space-6);
    background: radial-gradient(circle at 0% 0%, rgba(139, 92, 246, 0.25), transparent 55%),
                radial-gradient(circle at 100% 100%, rgba(56, 189, 248, 0.25), transparent 55%),
                rgba(2, 6, 23, 0.98);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    row-gap: var(--space-8);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    z-index: 40;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }

  .site-logo-wrap {
    margin-bottom: var(--space-4);
  }

  .nav-link {
    font-size: var(--text-base);
  }

  .header-mobile-overlay[hidden] {
    display: none;
  }

  .header-mobile-overlay.is-visible {
    display: block;
  }
}

@media (min-width: 901px) {
  .header-mobile-overlay {
    display: none !important;
  }
}