/* Header glass — blur layers in #header-glass-portal (js/header-glass.js) */

#header-glass-portal {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  overflow: visible;
}

.header-glass-layer {
  position: fixed;
  box-sizing: border-box;
  pointer-events: none;
  backdrop-filter: blur(10px) saturate(500%);
  transition: background 0.2s ease, border-color 0.2s ease;
}

/* ── Light theme glass ───────────────────────────────────── */
html[data-theme="light"] .header-glass-layer,
:root[data-theme="light"] .header-glass-layer {
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

html[data-theme="light"] .header-glass-layer.is-hover,
:root[data-theme="light"] .header-glass-layer.is-hover {
  background: rgba(255, 255, 255, 0.52);
}

/* ── Dark theme glass ────────────────────────────────────── */
html[data-theme="dark"] .header-glass-layer,
:root[data-theme="dark"] .header-glass-layer {
  background: rgba(12, 12, 12, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

html[data-theme="dark"] .header-glass-layer.is-hover,
:root[data-theme="dark"] .header-glass-layer.is-hover {
  background: rgba(12, 12, 12, 0.85);
}

html[data-theme="dark"] .header-glass-layer--toggle,
:root[data-theme="dark"] .header-glass-layer--toggle {
  background: rgba(56, 56, 56, 0.72);
  border-color: rgba(70, 70, 70, 0.9);
}

html[data-theme="dark"] .header-glass-layer--toggle.is-hover,
:root[data-theme="dark"] .header-glass-layer--toggle.is-hover {
  background: rgba(70, 70, 70, 0.85);
}

/* Pills transparent — blur on .header-glass-layer behind */
html[data-theme="light"] .site-header .brand,
html[data-theme="light"] .site-header .top-nav,
html[data-theme="light"] .site-header .header-right .theme-toggle-btn,
html[data-theme="dark"] .site-header .brand,
html[data-theme="dark"] .site-header .top-nav,
html[data-theme="dark"] .site-header .header-right .theme-toggle-btn,
:root[data-theme="light"] .site-header .brand,
:root[data-theme="light"] .site-header .top-nav,
:root[data-theme="light"] .site-header .header-right .theme-toggle-btn,
:root[data-theme="dark"] .site-header .brand,
:root[data-theme="dark"] .site-header .top-nav,
:root[data-theme="dark"] .site-header .header-right .theme-toggle-btn {
  background: transparent !important;
  backdrop-filter: none !important;
  border-color: transparent !important;
  box-shadow: none !important;
}

html[data-theme="light"] .site-header .brand,
html[data-theme="light"] .site-header .top-nav,
html[data-theme="light"] .site-header .header-right .theme-toggle-btn,
:root[data-theme="light"] .site-header .brand,
:root[data-theme="light"] .site-header .top-nav,
:root[data-theme="light"] .site-header .header-right .theme-toggle-btn {
  color: #111111;
}

html[data-theme="light"] .site-header .top-nav a,
:root[data-theme="light"] .site-header .top-nav a {
  color: rgba(0, 0, 0, 0.55);
}

html[data-theme="light"] .site-header .top-nav a:hover,
:root[data-theme="light"] .site-header .top-nav a:hover {
  color: #111111;
  background: rgba(0, 0, 0, 0.06);
}

html[data-theme="light"] .site-header .top-nav a.active,
:root[data-theme="light"] .site-header .top-nav a.active {
  background: rgba(0, 0, 0, 0.05);
  color: var(--accent-text);
  font-weight: 500;
}

html[data-theme="dark"] .site-header .top-nav,
:root[data-theme="dark"] .site-header .top-nav {
  transform: none;
}

html[data-theme="light"] .site-header .header-right .theme-toggle-btn:hover,
html[data-theme="dark"] .site-header .header-right .theme-toggle-btn:hover,
:root[data-theme="light"] .site-header .header-right .theme-toggle-btn:hover,
:root[data-theme="dark"] .site-header .header-right .theme-toggle-btn:hover {
  background: transparent !important;
}

@supports not (backdrop-filter: blur(1px)) {
  html[data-theme="light"] .header-glass-layer,
  :root[data-theme="light"] .header-glass-layer {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: none;
  }

  html[data-theme="dark"] .header-glass-layer,
  :root[data-theme="dark"] .header-glass-layer {
    background: rgba(12, 12, 12, 0.92);
    backdrop-filter: none;
  }
}