/**
 * CoreHomeNavbar — shared navigation (configurator / Figma reference).
 * Import after lumina-finish.css on every page.
 */

:root {
  --core-home-navbar-height: 4rem;
}

.core-home-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--lumina-surface);
  box-shadow: var(--lumina-shadow-header);
  border-bottom: 1px solid var(--lumina-outline-variant);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

[data-lumina-theme="dark"] .core-home-navbar {
  background: var(--lumina-surface-container);
  border-bottom-color: color-mix(in srgb, var(--lumina-outline-variant) 45%, transparent);
  box-shadow: none;
}

.core-home-navbar--hud {
  position: fixed;
  left: 0;
  right: 0;
  background: color-mix(in srgb, var(--lumina-surface-container-lowest) 72%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid color-mix(in srgb, var(--lumina-outline-variant) 55%, transparent);
}

[data-lumina-theme="dark"] .core-home-navbar--hud {
  background: color-mix(in srgb, var(--lumina-surface-container) 65%, transparent);
  border-bottom-color: color-mix(in srgb, var(--lumina-outline-variant) 40%, transparent);
}

.core-home-navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--core-home-navbar-height);
  padding: 0 24px;
  gap: 1.5rem;
}

.core-home-navbar__brand-link {
  font-family: var(--lumina-font-title);
  font-size: 18px;
  font-weight: 600;
  line-height: 24px;
  color: var(--lumina-on-surface);
  text-decoration: none;
}

.core-home-navbar__brand-link:hover {
  color: var(--lumina-primary);
}

.core-home-navbar__nav {
  display: none;
  gap: var(--lumina-gutter);
}

@media (min-width: 768px) {
  .core-home-navbar__nav {
    display: flex;
  }
}

.core-home-navbar__link {
  font-family: var(--lumina-font-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  color: var(--lumina-secondary);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

[data-lumina-theme="dark"] .core-home-navbar__link {
  color: var(--lumina-on-surface-variant);
}

.core-home-navbar__link:hover {
  color: var(--lumina-on-surface);
}

.core-home-navbar__link.is-active {
  color: var(--lumina-primary);
  border-bottom-color: var(--lumina-primary);
}

[data-lumina-theme="dark"] .core-home-navbar__link.is-active {
  color: var(--lumina-primary-fixed-dim, var(--lumina-primary));
}

.core-home-navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.core-home-navbar__theme-toggle {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  background: var(--lumina-surface-container-low);
  border: 1px solid var(--lumina-outline-variant);
}

.core-home-navbar__theme-toggle button {
  border: none;
  background: transparent;
  color: var(--lumina-secondary);
  padding: 6px;
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.core-home-navbar__theme-toggle button[aria-pressed="true"] {
  background: var(--lumina-surface-container);
  color: var(--lumina-primary);
}

.core-home-navbar__theme-toggle .material-symbols-outlined {
  font-size: 20px;
}

.core-home-navbar__icon-btn {
  border: none;
  background: transparent;
  color: var(--lumina-primary);
  padding: 8px;
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.15s;
}

.core-home-navbar__icon-btn:hover {
  background: var(--lumina-surface-container-low);
}

[data-lumina-theme="dark"] .core-home-navbar__icon-btn:hover {
  background: var(--lumina-surface-container-high);
}

.core-home-navbar__icon-btn:active {
  transform: scale(0.95);
}

/* Portal pages: offset content below fixed/sticky navbar */
.portal-body {
  margin: 0;
  min-height: 100vh;
  background: var(--lumina-background);
  color: var(--lumina-on-background);
  font-family: var(--lumina-font-body);
  font-size: 16px;
  line-height: 24px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.portal-body main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 24px 3rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}