:root {
  /* Light-on-dark defaults for site header (minimal but readable) */
  --fd-nav-fg: #eaeaea;
  --fd-nav-fg-muted: #c8c8c8;
  --fd-nav-bg: rgba(255,255,255,0.06);
  --fd-nav-bg-hover: rgba(255,255,255,0.12);
  --fd-nav-border: rgba(255,255,255,0.18);
  --fd-nav-active-underline: #ffffff;

  /* Layout/touch targets */
  --fd-nav-gap: 8px;
  --fd-nav-pad-y: 6px;
  --fd-nav-pad-x: 8px;
  --fd-nav-pill-pad-y: 6px;
  --fd-nav-pill-pad-x: 12px; /* slight increase for tap targets */
  --fd-nav-z: 1000;
  --fd-nav-font: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

/* Optional light theme hook if header is light */
.theme-light {
  --fd-nav-fg: #111;
  --fd-nav-fg-muted: #333;
  --fd-nav-bg: rgba(0,0,0,0.06);   /* slight increase for separation */
  --fd-nav-bg-hover: rgba(0,0,0,0.10);
  --fd-nav-border: rgba(0,0,0,0.12);
  --fd-nav-active-underline: #111;
}

/* Fixed rectangular nav container on top-right */
.fd-nav {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: var(--fd-nav-z);
  background: var(--fd-nav-bg);
  color: var(--fd-nav-fg);
  border: 1px solid var(--fd-nav-border);
  border-color: color-mix(in srgb, var(--fd-nav-border) 60%, transparent);
  border-radius: 0;
  padding: var(--fd-nav-pad-y) var(--fd-nav-pad-x);
  font-family: var(--fd-nav-font);
  line-height: 1;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

/* Canonical inline + fixed nav list styles (shared across all pages) */
.fd-nav__list {
  list-style: none;
  display: flex;
  gap: var(--fd-nav-gap);
  margin: 0;              /* normalize UL margin */
  padding: 0;
  flex-wrap: nowrap;      /* keep pills on one line */
}

/* Individual rectangular link "pills" */
/* Canonical pill styles (spacing matches About/Portfolio) */
.fd-nav__link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: currentColor; /* inherit from container for easy theming */
  background: transparent;
  border: 1px solid transparent; /* define on hover/active for subtlety */
  border-radius: 0;
  padding: var(--fd-nav-pill-pad-y) var(--fd-nav-pill-pad-x);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.1;       /* match inline header links */
  letter-spacing: 0.01em;
  transition: color .15s ease, background-color .15s ease, border-color .15s ease;
  text-shadow: 0 1px 2px rgba(0,0,0,0.25); /* subtle readability on dark */
  white-space: nowrap;     /* prevent wrapping differences */
  vertical-align: middle;  /* consistent optical alignment */
}

/* Hover/focus: typographic affordance + subtle bg/border */
.fd-nav__link:hover,
.fd-nav__link:focus {
  background: var(--fd-nav-bg-hover);
  border-color: var(--fd-nav-border);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: currentColor; /* ensure underline remains visible */
}

/* Focus visible for keyboard users */
.fd-nav__link:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .fd-nav__link { transition: none; }
}

/* Remove text-shadow in light theme for crisper edges */
.theme-light .fd-nav__link { text-shadow: none; }

/* Active page indication: minimal underline + subtle bg */
.fd-nav__link.is-active,
.fd-nav__link[aria-current="page"] {
  background: var(--fd-nav-bg-hover); /* slightly stronger bg for active */
  border-color: var(--fd-nav-border);
  box-shadow: inset 0 -2px 0 0 var(--fd-nav-active-underline);
  text-decoration: none;
}

/* Safe-area spacing on very small screens */
@supports (padding: max(0px)) {
  .fd-nav {
    top: max(12px, env(safe-area-inset-top));
    right: max(12px, env(safe-area-inset-right));
  }
}

/* Optional: body top padding helper if pages want to avoid overlap
   (not auto-applied to prevent layout shifts) */
body.fd-has-fixed-nav {
  padding-top: 56px; /* adjust if needed */
}

/* Inline header variant normalization so all pages look identical */
header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--fd-nav-gap);
}
header.site .fd-nav--inline {
  position: static;
  top: auto;
  right: auto;
  left: auto;
  background: transparent;
  border: 0;
  padding: 0;
  box-shadow: none;
  align-self: center;
}
header.site .fd-nav--inline .fd-nav__list {
  gap: var(--fd-nav-gap);
  margin: 0;
  align-items: center;
  flex-wrap: nowrap;
}
header.site .fd-nav--inline .fd-nav__link {
  line-height: 1.1;
  padding-top: 6px;
  padding-bottom: 6px;
  vertical-align: middle;
  white-space: nowrap;
}

/* Safe-area horizontal padding for header (iOS notches) */
@supports (padding: max(0px)) {
  header.site {
    padding-left: max(var(--space-4, 1.5rem), env(safe-area-inset-left));
    padding-right: max(var(--space-4, 1.5rem), env(safe-area-inset-right));
  }
}

/* Mobile adjustments for inline header nav */
@media (max-width: 600px) {
  /* Segmented control style; brand on line 1; nav as pill group on line 2 */
  header.site {
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: flex-start; /* avoid space-between when wrapping */
  }
  header.site h1 {
    flex: 1 1 100%;
    margin-bottom: 6px;
  }

  /* Group container */
  header.site .fd-nav--inline {
    width: 100%;
    padding-top: 8px;
  }

  /* Segmented group */
  header.site .fd-nav--inline .fd-nav__list {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
    background: var(--fd-nav-bg);
    border: 1px solid var(--fd-nav-border);
    border-color: color-mix(in srgb, var(--fd-nav-border) 70%, transparent);
    border-radius: 0;
    padding: 6px;
  }

  /* Items */
  header.site .fd-nav--inline .fd-nav__link {
    /* Make each link fill its grid cell and center its label */
    display: flex;              /* override base inline-flex */
    width: 100%;                /* stretch to full 1fr width */
    justify-content: center;
    align-items: center;
    box-sizing: border-box;     /* include border in width calculations */

    border-radius: 0;
    background: transparent;
    border: 1px solid transparent;
    padding: 8px 10px;
    font-size: 13px;
    text-shadow: none;
  }

  /* Active fills subtly; remove underline shadow */
  header.site .fd-nav--inline .fd-nav__link.is-active,
  header.site .fd-nav--inline .fd-nav__link[aria-current="page"] {
    background: var(--fd-nav-bg-hover);
    box-shadow: none;
  }
}

/* Ultra‑narrow refinement: 2 columns; last item spans full width */
@media (max-width: 360px) {
  header.site .fd-nav--inline .fd-nav__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  header.site .fd-nav--inline .fd-nav__list li:last-child {
    grid-column: 1 / -1;
  }
}


/* Global guard: when a page declares fd-nav-inline-present on <html>,
   suppress any fixed nav that might be injected. */
html.fd-nav-inline-present body > .fd-nav {
  display: none !important;
}