/* Shared top chrome for marketing landing + Sphinx /guide/ pages. */
.pf-site-chrome {
  --pf-ink: #101820;
  --pf-ink-soft: #3d4a55;
  --pf-paper: #f7f1e8;
  --pf-accent: #c46a2a;
  --pf-line: rgba(16, 24, 32, 0.12);
  --pf-font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --pf-font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --pf-header-height: 3.5rem;

  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(10px);
  background: rgba(247, 241, 232, 0.92);
  border-bottom: 1px solid var(--pf-line);
  font-family: var(--pf-font-body);
  color: var(--pf-ink);
}

.pf-site-chrome .wrap {
  width: min(1080px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.pf-site-chrome .header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--pf-header-height);
}

.pf-site-chrome .brand {
  font-family: var(--pf-font-display);
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--pf-ink);
  letter-spacing: -0.02em;
}

.pf-site-chrome .nav-toggle {
  display: none;
  border: 1px solid var(--pf-line);
  background: transparent;
  color: var(--pf-ink);
  padding: 0.4rem 0.7rem;
  font: inherit;
  cursor: pointer;
}

.pf-site-chrome .site-nav {
  display: flex;
  gap: 1.25rem;
}

.pf-site-chrome .site-nav a {
  text-decoration: none;
  color: var(--pf-ink-soft);
  font-weight: 600;
}

.pf-site-chrome .site-nav a:hover,
.pf-site-chrome .site-nav a:focus-visible {
  color: var(--pf-accent);
}

/* Furo: keep page layout usable under the persistent chrome */
.pf-site-chrome + .page {
  min-height: calc(100% - var(--pf-header-height));
}

@media (max-width: 720px) {
  .pf-site-chrome .nav-toggle {
    display: inline-flex;
  }

  .pf-site-chrome .site-nav {
    display: none;
    position: absolute;
    right: 0;
    top: calc(var(--pf-header-height) - 0.1rem);
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    background: var(--pf-paper);
    border: 1px solid var(--pf-line);
    border-radius: 0.4rem;
  }

  .pf-site-chrome .site-nav.open {
    display: flex;
  }
}

/* Dark docs theme: keep chrome readable without flipping brand colors */
body[data-theme="dark"] .pf-site-chrome {
  background: rgba(24, 28, 32, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  color: #e8eaed;
}

body[data-theme="dark"] .pf-site-chrome .brand {
  color: #e8eaed;
}

body[data-theme="dark"] .pf-site-chrome .nav-toggle {
  border-color: rgba(255, 255, 255, 0.18);
  color: #e8eaed;
}

body[data-theme="dark"] .pf-site-chrome .site-nav a {
  color: #c4c9cf;
}

body[data-theme="dark"] .pf-site-chrome .site-nav a:hover,
body[data-theme="dark"] .pf-site-chrome .site-nav a:focus-visible {
  color: #e8a06a;
}

body[data-theme="dark"] .pf-site-chrome .site-nav {
  background: #1c2126;
  border-color: rgba(255, 255, 255, 0.12);
}